Delhi remained India's most polluted megacity by a wide margin during the 2024-25 winter, with an average PM2.5 concentration of 175 micrograms per cubic metre, according to an analysis released on Tuesday.
However, the Centre for Science and Environment analysis found that PM2.5 pollution in the national capital declined in the 2024-25 winter (October 1 to January 31) compared to the 2023-24 winter (189 micrograms per cubic metre).
Kolkata was the second-most polluted megacity during the 2024-25 winter, with an average PM2.5 concentration of 65 micrograms per cubic metre.
The analysis showed that PM2.5 levels declined in Bengaluru, Mumbai and Kolkata compared to the previous winter but remained the same in Chennai and Hyderabad.
The average PM2.5 levels during the 2024-25 winter were 52 micrograms per cubic metre in Hyderabad, 50 in Mumbai, 37 in Bengaluru and 36 in Chennai.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
Monsoon brings welcome relief but also triggers respiratory health issues like cold, flu, asthma and pneumonia, due to high humidity, mould, dust, air pollution and viral outbreaks.
The Supreme Court has upheld the powers of the pollution control boards to impose restitutionary and compensatory damages for environmental harm, saying that prevention and remediation must be at the heart of environmental governance.
Ahead of the UN treaty on plastics, a new report in The Lancet journal on Monday has warned that plastic pollution is an underrecognized threat to the health of both humans and the planet, which must be addressed immediately.
Citing the latest Air Quality Index of 74, CM Rekha Gupta highlighted the government's ongoing efforts to reduce the city's pollution, and claimed that for the first time in a decade, the index has come down to such a satisfactory level.
On World Cancer Day, a look at how the change is being driven by environmental, occupational and/or genetic risk factors.
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