air quality index: Quick Facts

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Last updated

Nov. 7, 2026

News •

Delhi AQI: Air quality worsens to ‘very poor’ category in Delhi, parts of north India • Nov. 1, 2026, 10:51 PM ET (The Hindu)

Visakhapatnam’s air quality dips to ‘Poor’ category, AQI touches 254 • Oct. 25, 2026, 10:05 AM ET (The Hindu)

How is air pollution in Delhi-NCR ahead of winter? • Oct. 23, 2026, 5:13 AM ET (The Hindu)

Facts

Also Known As	AQI

Photos and Videos

Diagram explaining air quality index (AQI) levels with a color-coded bar from green (good) to maroon (hazardous), describing health risks as air quality moves from healthy to unhealthy.

Thick brown layer of smog obscures the Los Angeles skyline, with city buildings and neighborhoods visible beneath a blue sky.

New York City skyline tinted orange from wildfire smoke.

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Topics

air pollution air pollution control National Ambient Air Quality Standards