Unhealthy air quality has descended on parts of the Bay Area thanks to a combination of cold weather, dense fog and smoke.

Delhi's air quality improves to 'moderate' category with Air Quality Index at 211, as per CPCB data on Wednesday.

An updated air quality alert was issued on Tuesday at 3:59 p.m. in effect until Thursday at midnight. The alert is for San ...

On Tuesday at 4:09 p.m. an updated air quality alert was issued valid until Thursday at midnight. The alert is for Catalina ...

Delhi experiences a slight improvement in air quality as the AQI remains in the poor category for three consecutive days, ...

"It's looking like, at least for the rest of the week into Friday, we're going to have either a stage one or a stage two burn ...

Dhaka, the overcrowded capital city of Bangladesh, has ranked the 7th on the list of cities with the worst air quality with ...

The burn bans are issued when air quality becomes a concern and to prevent it from worsening. Stage 2 burns mean that all ...

In late November, Delhi’s environment minister Gopal Rai sought permission from the central government to use cloud seeding ...

Research led by Fudan University and the Chinese Center for Disease Control and Prevention in China reports that indoor air ...

Air quality in Thailand deteriorates; 20 provinces report unsafe levels. Residents advised to limit outdoor activities, wear ...

Dallas County is among 10 counties that don’t meet new federal air quality guidelines. What happens next is anyone’s guess.