Specialized air quality instruments captured a spike in lead, chlorine, and bromine pollution during the L.A. wildfires.

The AQI incorporates measurements of five different air pollutants that the Environmental Protection Agency regulates: fine particles, ozone, carbon monoxide, sulfur dioxide, and nitrogen dioxide.

Ozone is a gas comprised of three oxygen (O3) atoms. It is unstable and reacts easily to other gases. In its natural state, it is a component in several levels of the atmosphere. At high altitudes ...

If the air quality in your area is compromised, there are several things you can do to protect yourself. Special attention should be paid to those who have compromised respiratory, lung or heart ...

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

Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

The Air Quality Index, often referred to as AQI ... There are five pollutants evaluated as part of the index: ozone, particulate matter, carbon monoxide, sulfur dioxide and nitrogen dioxide.

More than 350 schools in Bangkok have been forced to close due to air pollution, authorities in Thailand’s capital have said.

Delhi recorded an average AQI of 350 at 6 AM on Friday. The increasing pollution in the region led the Commission for Air ...