The Air Quality Index, or AQI, is the primary system used to warn the public when air pollution is dangerous. It’s based on ...

Bangladesh's densely populated capital, Dhaka, ranked as the city with the second-worst air quality globally, recording an ...

Twelve Texas counties have recently exceeded federal air quality standards for particulate matter, commonly known as soot.

Wildfire ash carries many carcinogens that could cause short- and long-term health problems, including asthma attacks and ...

Air quality is a big concern for everyone in Southern California, even for those who don't live near fire zones. Here are answers to some of your top questions.

As thousands of acres burn across Southern California, wildfire smoke is causing poor air quality in the region and beyond.

Dhaka has topped the list of cities with the worst air quality with an AQI score of 254 at 8:30am on Wednesday. The air was ...

As Delhi's AQI worsens, some restrictions have been made in the city which includes schools that operate in hybrid mode, a ...

As people return to the structures spared from Los Angeles wildfires, experts warn that they should be careful of the air ...

Several parts of southern California are currently under windblown dust and ash advisories as deadly wildfires continue to ...