{"id":9674,"date":"2025-06-23T15:15:59","date_gmt":"2025-06-23T21:15:59","guid":{"rendered":"https:\/\/housefresh.com\/?p=9674"},"modified":"2025-08-09T05:35:55","modified_gmt":"2025-08-09T11:35:55","slug":"cigarettes-indirectly-smoking-map","status":"publish","type":"post","link":"https:\/\/housefresh.com\/cigarettes-indirectly-smoking-map\/","title":{"rendered":"How many cigarettes you\u2019re indirectly smoking due to air pollution levels"},"content":{"rendered":"\n<p>Every day, the average adult inhales approximately 11,000 liters of air. But while getting outside and breathing in fresh air has <a href=\"https:\/\/health.ucdavis.edu\/blog\/cultivating-health\/3-ways-getting-outside-into-nature-helps-improve-your-health\/2023\/05\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">numerous health benefits<\/a>, the reality is that not all air is good for you. Airborne pollutants are one of the greatest sources of toxic exposure known to humankind and according to one estimate from the <a href=\"https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/ambient-(outdoor)-air-quality-and-health\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">World Health Organization<\/a>, air pollution contributes to seven million premature deaths worldwide every year.<\/p>\n\n\n\n<p>Of special concern is fine particulate matter (PM2.5) \u2014 airborne particles from engines and other emissions that are less than 0.033 the diameter of a human hair. These particles make their way to the deepest parts of your lungs and can get into your bloodstream. Cigarettes emit <a href=\"https:\/\/www.newscientist.com\/article\/dn6312-cigarettes-more-polluting-than-diesel-exhaust\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ten times more<\/a> PM2.5 matter than diesel car exhausts, according to a controlled experiment reported by Tobacco Control. But while quitting smoking reduces exposure to toxins and improves overall health, it is harder to avoid the <a href=\"https:\/\/www.nature.com\/articles\/s41612-020-0124-2\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">toxins that pollute the indoor and outdoor air<\/a>.<\/p>\n\n\n\n<p>Air quality varies significantly around the globe, and in many parts of the world, <a href=\"https:\/\/housefresh.com\/indoor-air-quality-statistics\/\" target=\"_blank\" rel=\"noreferrer noopener\">the negative health effects of poor air quality<\/a> are equivalent to smoking hundreds of cigarettes a year. To better communicate the health risks of air pollution, we used the latest data to calculate the number of cigarettes people around the world are indirectly smoking due to poor air quality.<\/p>\n\n\n<div class=\"gb-container gb-container-38d04cd8\">\n<div class=\"gb-container gb-container-a28b261b gb-accordion\">\n<div class=\"gb-container gb-container-b6c0551a gb-accordion__item gb-accordion__item-open\" data-transition=\"slide\">\n\n<button class=\"gb-button gb-button-8e6c348f gb-accordion__toggle gb-block-is-current gb-headline-h4\" id=\"gb-accordion-toggle-8e6c348f\"><span class=\"gb-button-text\"><strong>What we did<\/strong><\/span><span class=\"gb-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\" width=\"1em\" height=\"1em\" ariahidden=\"true\" role=\"img\" class=\"gb-accordion__icon\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\" fill=\"currentColor\"><\/path><\/svg><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\" width=\"1em\" height=\"1em\" ariahidden=\"true\" role=\"img\" class=\"gb-accordion__icon-open\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\" fill=\"currentColor\"><\/path><\/svg><\/span><\/button>\n\n\n<div id=\"gb-accordion-content-580562c2\" class=\"gb-accordion__content\"><div class=\"gb-container gb-container-580562c2\">\n\n<p>We found the average PM2.5 concentration data in 2024 for the most populated cities in every country, according to data from IQAir.. Then, we used Berkeley Earth\u2019s rule of thumb, that one cigarette approximates to 22 \u00b5g\/m3 PM2.5 concentration. With this reference, we multiplied the result by 365 days to obtain the yearly number of cigarettes indirectly smoked in each location.<\/p>\n\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<div class=\"gb-headline gb-headline-eabe930c gb-headline-text\"><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"gb-text toc-include\" data-name=\"Key findings\" class=\"gb-text toc-include\" data-name=\"Key findings\" id=\"key-findings-1h2\">Key findings<\/h2>\n\n\n\n<div class=\"gb-headline gb-headline-f54b37f5\"><span class=\"gb-icon\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span><span class=\"gb-headline-text\">Many cities with the worst air quality are in developing economies in the <strong>Middle East<\/strong>, <strong>Southeast Asia<\/strong> and <strong>Africa<\/strong>.<\/span><\/div>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-54c7a008\"><span class=\"gb-icon\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span><span class=\"gb-headline-text\"><strong>Delhi<\/strong> in India has the worst air pollution of any major global city \u2014 the equivalent of smoking <strong>1,797 cigarettes<\/strong> per year.<\/span><\/div>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-081aa928\"><span class=\"gb-icon\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span><span class=\"gb-headline-text\">The capital city with the best air is <strong>Nassau<\/strong> in the Bahamas, where PM2.5 levels are equivalent to smoking <strong>38 cigarettes<\/strong> yearly.<\/span><\/div>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-3a90d62f\"><span class=\"gb-icon\"><svg aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill=\"currentColor\" d=\"M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z\"><\/path><\/svg><\/span><span class=\"gb-headline-text\"><strong>Boise<\/strong>, Idaho, has the worst air of any major U.S. city \u2014 at the equivalent of smoking <strong>171 cigarettes<\/strong> per year. Boise is followed by <strong>Fresno<\/strong> (<strong>169<\/strong>) and <strong>Los Angeles<\/strong> (<strong>168<\/strong>).<\/span><\/div>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-eabe930c gb-headline-text\"><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"gb-text toc-include\" data-name=\"Global cities ranking\" class=\"gb-text toc-include\" data-name=\"Global cities ranking\" id=\"breathing-delhi-air-is-like-smoking-1797-cigarettes-per-year-1h2\">Breathing Delhi air is like smoking 1,797 cigarettes per year<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"the-level-of-air-pollution-in-the-indian-capital-is-equivalent-to-smoking-35-cigarettes-a-week-1h3\">The level of air pollution in the Indian capital is equivalent to smoking 35 cigarettes a week.<\/h3>\n\n\n\n<p>First, we sourced the average PM2.5 levels for every major city worldwide in 2024. These are measured in \u00b5g\/m3 or micrograms per cubic meter of air. The 20 cities with the worst air all breathe the equivalent of at least 15 cigarettes per week. The worst air of all is India\u2019s capital, Delhi, where average PM2.5 levels of 108.3 \u00b5g\/m3 equate to 35 cigarettes per week or 1,797 per year.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-596x1024.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1490\" height=\"2560\" src=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png\" alt=\"Chart ranking 20 global cities by yearly cigarettes indirectly smoked due to air pollution in 2024, with Delhi highest at 1,797\" class=\"wp-image-29244\" srcset=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png 1490w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-175x300.png 175w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-596x1024.png 596w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-768x1319.png 768w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-894x1536.png 894w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/01_The-20-Global-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-1192x2048.png 1192w\" sizes=\"auto, (max-width: 1490px) 100vw, 1490px\" \/><\/a><figcaption class=\"wp-element-caption\">Breathing the air pollution in Delhi in 2024 was equivalent to smoking 1,797 cigarettes a year \u2014 the highest among over 700 cities analyzed. This chart shows the top 20 cities where pollution equals the most indirect smoking.<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-eabe930c gb-headline-text\"><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"gb-text toc-include\" data-name=\"Capital cities ranking\" class=\"gb-text toc-include\" data-name=\"Capital cities ranking\" id=\"eighteen-of-the-top-20-capital-cities-with-the-worst-air-are-in-asia-and-the-other-two-are-in-africa-1h2\">Eighteen of the top 20 capital cities with the worst air are in Asia, and the other two are in Africa<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"to-get-a-comprehensive-global-view-we-narrowed-our-focus-to-the-worlds-capital-cities-1h3\">To get a comprehensive global view, we narrowed our focus to the world\u2019s capital cities.<\/h3>\n\n\n\n<p>Delhi has leaped to the top of the table in 2025 with more than twice the PM2.5 levels than in our 2024 report. <a href=\"https:\/\/www.birmingham.ac.uk\/news\/2025\/delhi-air-pollution-worse-than-expected-as-water-vapour-skews-figures\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Researchers<\/a> have found that local humidity levels may have obscured the true level of particulate matter in Delhi\u2019s air in previous years. <\/p>\n\n\n<div class=\"gb-container gb-container-8bb7aa12\">\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cThe air is killing us all. The government is leaving us to die so that India can grow big. Every year more cars, more buildings, more rubbish, more factories, filling the air with filth \u2013 is that worth more than our lives?\u201d<br><br>\u2014 <a href=\"https:\/\/www.theguardian.com\/world\/2024\/nov\/22\/the-air-is-killing-us-why-delhi-india-pollution-problem-runs-deeper-than-smog-season\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Hartosh Singh<\/a>, local fruiterer<\/p>\n<\/blockquote>\n\n<\/div>\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1490\" height=\"2560\" src=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png\" alt=\"Chart showing top 20 capital cities where air pollution equals most cigarettes indirectly smoked in 2024\" class=\"wp-image-29245\" srcset=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png 1490w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-175x300.png 175w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-596x1024.png 596w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-768x1319.png 768w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-894x1536.png 894w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/02_The-20-Capital-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-1192x2048.png 1192w\" sizes=\"auto, (max-width: 1490px) 100vw, 1490px\" \/><\/a><figcaption class=\"wp-element-caption\">In 2024, air pollution in the capital of India exposed residents to the equivalent of smoking 1,797 cigarettes annually \u2014 the highest among capital cities in our study. This chart ranks the top 20 capitals by indirect cigarette exposure due to PM2.5 pollution.<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>The only non-Asian or -African capital city among the 30 capitals with the worst air is Sarajevo, Bosnia and Herzegovina, where the pollution is equivalent to smoking 511 cigarettes yearly. UNICEF reports that the effects of air pollution cost \u201c<a href=\"https:\/\/www.unicef.org\/bih\/media\/4971\/file\/Situation%20Analysis%20of%20Children%20in%20Bosnia%20and%20Herzegovina.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">over 21.5 percent of BiH\u2019s GDP through lost work and school days, and healthcare costs<\/a>.\u201d The <a href=\"https:\/\/www.unep.org\/news-and-stories\/story\/coming-clean-air-bosnia-and-herzegovina\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">U.N. Environment Programme<\/a> attributes Sarajevo\u2019s poor air to \u201cheavy traffic, poor spatial planning, solid-fuel based heating and natural factors are to blame for the poor air quality.\u201d<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-eabe930c gb-headline-text\"><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"gb-text toc-include\" data-name=\"U.S. cities ranking\" class=\"gb-text toc-include\" data-name=\"U.S. cities ranking\" id=\"boise-idaho-is-americas-most-air-polluted-major-city-1h2\">Boise, Idaho, is America\u2019s most air-polluted major city<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"and-for-some-californians-breathing-local-air-is-like-smoking-169-cigarettes-annually-1h3\">And for some Californians, breathing local air is like smoking 169 cigarettes annually.<\/h3>\n\n\n\n<p>Next, we looked at the average levels of fine particulate matter in the air of America\u2019s major cities.<\/p>\n\n\n\n<p>Two of the three cities with the worst air are in California. Just <a href=\"https:\/\/www.cdph.ca.gov\/Programs\/CCDPHP\/DCDIC\/CTCB\/CDPH%20Document%20Library\/ResearchandEvaluation\/FactsandFigures\/CaliforniaTobaccoFactsAndFigures_2024.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">6.0%<\/a> of adults smoke tobacco in California, but in Fresno, residents indirectly smoke the equivalent of 169 cigarettes per year, and in Los Angeles, that figure is 168. Local emissions policies have reduced the amount of fine particulate matter that Californians inhale by <a href=\"https:\/\/news.berkeley.edu\/2024\/09\/11\/california-has-dramatically-improved-its-air-quality-but-racial-disparities-persist\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">65%<\/a> in 25 years. However, an increase in the number and spread of wildfires has significantly<a href=\"https:\/\/www.wri.org\/insights\/los-angeles-fires-january-2025-explained\" target=\"_blank\" rel=\"noreferrer noopener nofollow\"> reduced local tree cover<\/a>, releasing carbon dioxide into the air and inhibiting the natural cooling of the local environment.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-596x1024.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1490\" height=\"2560\" src=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png\" alt=\"Chart showing top 20 major U.S. cities where air pollution in 2024 equals most cigarettes indirectly smoked by residents, led by Boise at 171\" class=\"wp-image-29246\" srcset=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png 1490w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-175x300.png 175w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-596x1024.png 596w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-768x1319.png 768w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-894x1536.png 894w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/03_The-20-Major-US-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-1192x2048.png 1192w\" sizes=\"auto, (max-width: 1490px) 100vw, 1490px\" \/><\/a><figcaption class=\"wp-element-caption\">In 2024, Boise, ID topped the list of major U.S. cities for air pollution exposure \u2014 equal to smoking 171 cigarettes per year. This chart ranks the top 20 cities by indirect cigarette exposure from PM2.5.<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>We found that the city with the highest PM2.5 level is Boise, Idaho, where an average density of 10.3 \u00b5g\/m3 means the equivalent of smoking 171 cigarettes per year for Boise residents.<\/p>\n\n\n\n<p>The city is reeling from one of the worst wildfire seasons of recent years. On July 23, 2024, the city\u2019s <a href=\"https:\/\/www.airnow.gov\/aqi\/aqi-basics\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Air Quality Index<\/a> (AQI) score reached 227 AQI, the first time it has crossed into the \u201c<a href=\"https:\/\/www.idahostatesman.com\/news\/weather-news\/article290657334.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">very unhealthy<\/a>\u201d category in a quarter century.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cUnfortunately we\u2019re downwind from a lot of the California and Oregon fires, so smoke not only gets funneled here, but it can get trapped in the valley.&#8221;<br><br>\u2014 Brittany Brand, director of Boise State University\u2019s Hazard and Climate Resilience Institute<\/p>\n<\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-eabe930c gb-headline-text\"><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"gb-text toc-include\" data-name=\"UK cities ranking\" class=\"gb-text toc-include\" data-name=\"UK cities ranking\" id=\"liverpools-air-is-like-smoking-171-cigarettes-per-year-1h2\">Liverpool\u2019s air is like smoking 171 cigarettes per year<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"the-merseyside-capital-is-uks-worst-city-for-pm2-5-but-southern-coastal-cities-also-suffer-1h3\">The Merseyside capital is UK\u2019s worst city for PM2.5, but southern coastal cities also suffer.<\/h3>\n\n\n\n<p>Finally, we looked at the air pollution in every UK city to determine the 20 cities with the worst air.<\/p>\n\n\n\n<p>Along with traditionally industrial cities with dense urban centers, such as Manchester and Liverpool, there are a number of southern coastal cities, such as Worthing, Portsmouth and Bournemouth. In Portsmouth, where PM2.5 levels are equivalent to smoking 126 cigarettes per year, <a href=\"https:\/\/www.portsmouth.gov.uk\/services\/health-and-care\/health\/joint-strategic-needs-assessment\/portsmouth-demography\/portsmouth-deaths-jsna-report\/\" rel=\"nofollow noopener\" target=\"_blank\">the council reports<\/a> deaths attributable to fine particulate pollution to be higher than the England average most years since 2010. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1490\" height=\"2560\" src=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png\" alt=\"Chart showing top 20 UK cities where air pollution equals most cigarettes indirectly smoked in 2024, led by Liverpool, Worthing and Northampton.\" class=\"wp-image-29247\" srcset=\"https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-scaled.png 1490w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-175x300.png 175w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-596x1024.png 596w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-768x1319.png 768w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-894x1536.png 894w, https:\/\/housefresh.com\/wp-content\/uploads\/2025\/05\/04_The-20-UK-Cities-Where-Youre-Indirectly-Smoking-the-Most-Cigarettes-1192x2048.png 1192w\" sizes=\"auto, (max-width: 1490px) 100vw, 1490px\" \/><\/a><figcaption class=\"wp-element-caption\">In 2024, Liverpool topped the list of UK cities for air pollution exposure \u2014 equivalent to smoking 171 cigarettes per year. This chart ranks the 20 UK cities where PM2.5 pollution equals the most indirect smoking.<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>Some of these coastal towns are impacted by an influx of tourist vehicles in the summer months, and the air quality is also affected by salt particles from the sea and the industrial emissions of ports. They may also have been overlooked for <a href=\"https:\/\/www.treesforcities.org\/resources\/clean-air-day-2022\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">reforestation programs<\/a>.<\/p>\n\n\n\n<p>In Bournemouth, motor vehicles are one of the biggest contributors to urban air pollution, compounded by a dense road network, outdated buses, and a lack of investment; a <a href=\"https:\/\/dorsetchamber.co.uk\/does-bournemouth-need-a-clean-air-zone\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">clean air zone<\/a> has been proposed, but there are concerns over the economic trade-off.<\/p>\n\n\n\n<p>Based in Hampshire, <a href=\"https:\/\/www.safeairschools.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Safe Air Schools UK<\/a> responds to challenges shared by schools nationwide:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>&#8220;<\/em>This data highlights that Portsmouth \u2014 in our own county \u2014 ranks among the UK\u2019s worst cities for PM2.5 with air pollution carrying the same health impact as smoking 126 cigarettes a year. <a href=\"https:\/\/foe.cymru\/over-65000-school-children-risk-dangerous-air-pollution\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Friends of the Earth<\/a> have identified 15 schools in the city located in neighbourhoods that exceed World Health Organization air quality limits \u2014 twice.<\/p>\n\n\n\n<p>Across Hampshire, <a href=\"https:\/\/explore-education-statistics.service.gov.uk\/find-statistics\/pupil-absence-in-schools-in-england\/2024-25-autumn-term\" rel=\"nofollow noopener\" target=\"_blank\">sickness is the leading cause<\/a> of authorised school absence, and the county exceeds the national average.<\/p>\n\n\n\n<p><strong>Clean air is not a luxury; it\u2019s fundamental to children\u2019s health, learning, inclusion and equitable access to education. <\/strong>We\u2019re calling for practical, affordable action to make safe air a reality for all children in every classroom.&#8221;<\/p>\n<cite>\u2014 Nathalie Pearson, <a href=\"https:\/\/www.safeairschools.org\/what-can-we-do-\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Safe Air Schools<\/a><\/cite><\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"gb-headline gb-headline-eabe930c gb-headline-text\"><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"gb-text toc-include\" data-name=\"Interactive tool\" class=\"gb-text toc-include\" data-name=\"Interactive tool\" id=\"the-number-of-cigarettes-in-your-local-citys-air-1h2\">The number of cigarettes in your local city\u2019s air<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"use-our-interactive-table-to-check-the-pollution-levels-in-over-700-global-cities-1h3\">Use our interactive table to check the pollution levels in over 700 global cities.<\/h3>\n\n\n\n<p>The <a href=\"https:\/\/www.google.com\/search?q=While+the+decline+in+smoking+over+the+last+20+years+&amp;ei=1YBRY4eWNbiXhbIPxoaC2AM&amp;ved=0ahUKEwjH1P2gpu_6AhW4S0EAHUaDADsQ4dUDCA8&amp;uact=5&amp;oq=While+the+decline+in+smoking+over+the+last+20+years+&amp;gs_lcp=Cgdnd3Mtd2l6EAMyBwgAEB4QogQyBwgAEB4QogQyBQgAEKIESgQIQRgASgQIRhgAUABYAGDHAWgAcAB4AIABtAGIAbQBkgEDMC4xmAEAoAEBwAEB&amp;sclient=gws-wiz\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">decline in smoking<\/a> over the past two decades has been one of the great public health achievements of the 21st century, but worsening air pollution has offset many of the expected gains in general respiratory health. An increase in wildfires, rising vehicle and industrial emissions and domestic wood-burning appliances make living in some of the world\u2019s most populous cities the equivalent of smoking hundreds of cigarettes a year.<\/p>\n\n\n\n<p>Many cities with the worst air pollution are in fast-growing, developing economies, while the cities with the cleanest air are wealthier in service-oriented economies. But the air quality in some of the most developed major cities also decreases the local <a href=\"https:\/\/www.london.gov.uk\/press-releases\/mayoral\/new-imperial-study-on-mayors-aq-policies\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">life expectancy<\/a>, much like smoking. You can use the interactive table below to search for your city and see the number of cigarettes you effectively smoke each year due to air pollution.<\/p>\n\n\n\n<div style=\"max-width:100%;margin:auto\"><script src=\"https:\/\/embed.neomam.com\/iframeResizer.min.js\"><\/script><iframe src=\"https:\/\/embed.neomam.com\/secondhand-smoke\/\" width=\"100%\" frameborder=\"0\" onload=\"iFrameResize({checkOrigin:false})\"><\/iframe><\/div>\n\n\n\n<p><\/p>\n\n\n\n<p>Air pollution is one of the greatest threats to human health in the world and kills more people each year than tobacco, car accidents or diabetes. Respiratory health has become a major focus in public health since the COVID-19 pandemic, and smoking rates have fallen considerably over the past several decades.<\/p>\n\n\n\n<p>For a complete picture of health, however, it is essential to know the respiratory impacts of the air we breathe daily. Do you know how many cigarettes you are indirectly smoking due to air pollution?<\/p>\n\n\n<div class=\"gb-container gb-container-edd1be45\">\n\n<h3 class=\"gb-headline gb-headline-c19f445b gb-headline-text\" class=\"gb-headline gb-headline-c19f445b gb-headline-text\" id=\"methodology-1h3\">METHODOLOGY<\/h3>\n\n\n\n<p>To find out how many cigarettes are smoked indirectly due to air pollution around the world, we found the average 2024 PM2.5 concentration data for the most populated cities in every country on <a href=\"https:\/\/www.iqair.com\/\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/www.iqair.com\/<\/a>.<\/p>\n\n\n\n<p>We then used <a href=\"https:\/\/berkeleyearth.org\/air-pollution-and-cigarette-equivalence\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Berkeley Earth&#8217;s<\/a> rule of thumb that one cigarette approximates to 22 \u00b5g\/m3 PM2.5 concentration. With this reference, we divided each city\u2019s average PM2.5 level by 22 and then multiplied it by 365 days to obtain the yearly number of cigarettes indirectly smoked in each location.<\/p>\n\n\n\n<p>The data is correct as of April 2025.<\/p>\n\n<\/div>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Every day, the average adult inhales approximately 11,000 liters of air. But while getting outside and breathing in fresh air has numerous health benefits, the reality is that not all air is good for you. Airborne pollutants are one of the greatest sources of toxic exposure known to humankind and according to one estimate from &#8230; <a title=\"How many cigarettes you\u2019re indirectly smoking due to air pollution levels\" class=\"read-more\" href=\"https:\/\/housefresh.com\/cigarettes-indirectly-smoking-map\/\" aria-label=\"Read more about How many cigarettes you\u2019re indirectly smoking due to air pollution levels\">Read more<\/a><\/p>\n","protected":false},"author":15548,"featured_media":9870,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[308,271],"tags":[353,329],"class_list":["post-9674","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-trending-articles","tag-data-led","tag-guides"],"acf":[],"_links":{"self":[{"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/posts\/9674","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/users\/15548"}],"replies":[{"embeddable":true,"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/comments?post=9674"}],"version-history":[{"count":16,"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/posts\/9674\/revisions"}],"predecessor-version":[{"id":31389,"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/posts\/9674\/revisions\/31389"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/media\/9870"}],"wp:attachment":[{"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/media?parent=9674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/categories?post=9674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/housefresh.com\/wp-json\/wp\/v2\/tags?post=9674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}