There are actually two AQIs for air quality, one for particulate matter and one for ozone, but when you see just one AQI, you’re looking at whatever pollutant is the higher of the two.

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 ...

Developed by the Environmental Protection Agency (EPA), the AQI tracks five major pollutants: Ground-level ozone Particulate ...

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 ...

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.

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