{"id":21521,"date":"2022-03-28T18:29:56","date_gmt":"2022-03-28T10:29:56","guid":{"rendered":"https:\/\/smartairfilters.com\/?p=21521"},"modified":"2022-05-19T13:06:17","modified_gmt":"2022-05-19T05:06:17","slug":"did-chennai-air-quality-get-better-in-2021","status":"publish","type":"post","link":"https:\/\/smartairfilters.com\/en\/blog\/did-chennai-air-quality-get-better-in-2021\/","title":{"rendered":"Did Chennai Air Quality Get Better in 2021?"},"content":{"rendered":"

Chennai air quality worsened by 11.5% in 2021 compared to 2020. This leaves Chennai with air pollution levels 6 times higher than the World Health Organization\u2019s annual limit. What are the trends in Chennai air quality and how does Chennai air pollution compare to other Indian cities?<\/p>\n\n\n\n

Chennai Air Quality: 2020 vs. 2021<\/h2>\n\n\n\n

Chennai’s 2021 PM2.5 air pollution levels worsened 11.5% compared to 2020. With the 11.5% decline in air quality, Chennai averaged 29 micrograms of PM2.5 air pollution in 2021. <\/p>\n\n\n\n

\"Chennai<\/figure>\n\n\n\n

Chennai Monthly Air Quality<\/h2>\n\n\n\n

Breaking down the data by month reveals exactly when air pollution was the worst in Chennai. The data shows that 2021 Chennai air quality was worse across the whole year, except briefly in the summer.<\/p>\n\n\n\n

\"Chennai<\/figure><\/div>\n\n\n\n

Analyzing the air quality data for the previous six years suggests that Chennai\u2019s air pollution levels start peaking during winter<\/a> with PM2.5 typically rising in September, and it remains high until March of the next year. <\/p>\n\n\n\n

\"Chennai<\/figure>\n\n\n\n

Chennai’s Air Quality Compared to Other Cities in India<\/h2>\n\n\n\n

Chennai\u2019s air pollution averages about 30% that of air pollution leader Delhi<\/a>, making it one of the least polluted major cities in India. Despite being better than Delhi and Kolkata, Chennai\u2019s PM2.5 exceeds the World Health Organization\u2019s annual limit every month of the year \u2014 even in the cleanest month.<\/p>\n\n\n\n

\"Chennai<\/figure>\n\n\n\n

The analysis is based on PM2.5 air pollution<\/a>, particles smaller than 2.5 microns in diameter. These particles can penetrate deep into the lungs and even enter the bloodstream. Studies have found that PM2.5 raises blood pressure<\/a>, inflammation<\/a>, and rates of heart attacks and strokes<\/a>.<\/p>\n\n\n\n

\"PM2.5<\/figure><\/div>\n\n\n\n

What Next?<\/h2>\n\n\n\n

Despite the harms of PM2.5, studies have found that wearing masks prevents physiological harm to the body<\/a>, and placebo-controlled studies of air purifiers have found that removing particulate in the home has positive effects on blood pressure, inflammation, and immune response<\/a>.<\/p>\n\n\n\n

Smart Air provides empirically backed<\/a>, no-nonsense purifiers and masks<\/a> to help air-breathers protect themselves and their family. Smart Air is a certified B Corp founded to publicize the simple science behind air purifiers and masks, thereby lowering the cost of breathing clean air.<\/p>\n\n\n\n

Shop Smart Air\u2019s Lineup of Cost-effective, Data-backed Air Purifiers<\/a><\/p>\n\n\n\n

\"\"
Smart Air’s award-winning Sqair bedroom air purifier<\/a><\/figcaption><\/figure><\/div>","protected":false},"excerpt":{"rendered":"

Chennai air quality worsened by 11.5% in 2021 compared to 2020. This leaves Chennai with air pollution levels 6 times higher than the World Health Organization\u2019s annual limit. What are the trends in Chennai air quality and how does Chennai air pollution compare to other Indian cities? Chennai Air Quality: … <\/p>\n

Read more<\/a><\/p>\n","protected":false},"author":10505,"featured_media":21527,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[17,452,386,257],"tags":[272,278,269,74],"class_list":["post-21521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-pollution","category-air-quality","category-india","category-pm2-5","tag-air-pollution","tag-air-quality","tag-india","tag-pm2-5","resize-featured-image"],"acf":[],"_links":{"self":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/21521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/users\/10505"}],"replies":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/comments?post=21521"}],"version-history":[{"count":2,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/21521\/revisions"}],"predecessor-version":[{"id":22250,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/posts\/21521\/revisions\/22250"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media\/21527"}],"wp:attachment":[{"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/media?parent=21521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/categories?post=21521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartairfilters.com\/en\/wp-json\/wp\/v2\/tags?post=21521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}