A regional air quality alert was issued for much of Southern California as harmful levels of fine particle pollution spread ...

Heavy rains, which lashed Kolkata for the past two days, improved air quality by several notches as the pollutants got cleansed in the showers, a senior West Bengal Pollution Control Board (WBPCB) ...

"Avoid all physical activity outdoors," the EPA advises at this level. According to the EPA's map, Picture Rocks and Marana ...

“Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of ...

Despite no significant rain being recorded in many parts of the Capital over the past few days, the air quality in Delhi ...

HUNTSVILLE, Ala. — Air quality in and around Huntsville improved early Saturday after spending several hours in the unhealthy ...