A doctor once told me that particulate matter (PM) measurement in Ukraine at the February 2022 start of the war with Russia was an average 24.2 µg/m3 (micrograms per cubic meter). This November ...

The Air Quality Index, or AQI, is the primary system used to warn the public when air pollution is dangerous. It’s based on ...

The AQI is measured on a scale from 0 to 500, with the lower the number, the healthier the air. (Getty Creative) ...

Delhi shivers under cold waves and poor air quality, with AQI levels reaching unhealthy and fog enveloping the city.

The AQI level once crossed 1200 and is still above 500. They promised to make Delhi corruption-free, but eight ministers, one MP, and 15 MLAs from their party have already been to jail," he said.

The CAQM order said IMD predicted that the AQI is likely to remain in the lower end of the 'very poor' category in the coming days.