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Air pollution in Tamil Nadu
July 13 , 2023
502 days
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- Tamil Nadu has seen a steady decline in air pollution in urban and rural areas between 2017 and 2022.
- The State has recorded a 22% reduction in fine particulate matter over the five-year period.
- In Tamil Nadu’s rural areas, the PM 2.5 level dropped from 46.6㎍/m3 (microgram per cubic metre) in 2017 to 32.9㎍/m3 in 2022.
- Whereas in urban places, the PM 2.5 levels were 42.7 ㎍/m3 in 2017 and 33.1 ㎍/m3 last year.
- Among major cities, Chennai also saw a fall of PM 2.5 levels from 40.86㎍/m3 in 2017 to 28.90㎍/m3 in 2022.
- Fine particulate matter is defined as particles that are 2.5 microns or less in diameter (PM 2.5).
- Under the NCAP, only three cities in Tamil Nadu - Chennai, Madurai, and Tuticorin - have been categorised as non-attainment cities.
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