The East Valley was hit with hazardous air quality levels early Monday morning, with residents encouraged to stay inside.

The Atlanta Fire Rescue Department responded to a hazardous materials incident in the 100 block of Krog Street on Saturday ...

The EPA has declared a health warning as areas like Hayden, Phoenix, and West Pinal experience unsafe air quality.

A severe air quality warning has been issued for various regions in the United States as harmful particles contaminate the ...

Air quality across northern Thailand has deteriorated sharply, with Chiang Mai once again engulfed in dense haze as forest ...

Hazardous levels of ultrafine dust shrouded Bangkok and 58 of the 76 provinces late Sunday afternoon with red levels of smog ...

Chiang Mai has once again climbed to the top of the world’s worst air quality rankings on March 30, with pollution levels ...

Arizona residents are urged to stay indoors as hazardous air pollution, likely caused by dust and winds, triggering health ...

The city of Loni is less than one hours’ drive from Delhi, but this rapidly growing industrial base beats the Indian capital ...

The EPA advises avoiding outdoor activities and minimizing indoor pollution exposure.

Chiang Mai now ranks among the world's most polluted cities as fires engulf the surrounding countryside in recent weeks.

Many Phoenix resident woke up this morning confused by the haze and the bad air quality. Here's what caused it and when it ...