What is AQI Index: The Air Quality Index (AQI) is used by government agencies to measure the quality of air. AQI measure all ...

Air Quality Numbers Explained: As pollution in Delhi continues to rise without pause, residents are constantly checking the AQI levels to decide when it might be safe to step outdoors. Air Quality ...

Canadian wildfire smoke is affecting air quality in parts of Michigan. The EPA's air quality index (AQI) uses a color-coded scale to inform the public about air quality and associated health risks.

Firefighters work inside a burned structure. After California’s Eaton fire was suppressed in January, invisible gases continued to permeate the air, exposing residents and first responders to ...

Delhi’s air quality improved following widespread rain under the influence of a western disturbance, as minimum temperatures dropped sharply ...

Smoke from the Green Fire and other wildfires burning in and near Shasta County are polluting the air over the North State. The Shasta County Air Quality Management District and Shasta County Health ...

Dhaka, the bustling capital of Bangladesh, has once again set a grim and troubling record—cementing its position at the top ...

As the air quality in the Salt Lake Valley has been extremely poor all week, ABC4 is looking into how schools decide whether ...

Thousands of people across a part of California have been urged to stay inside amid concerns over high air pollution, a map from AirNow shows. The map shows an area of fine particle (PM2.5) pollution ...