This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

According to the US Environmental Protection Agency (EPA ... The EPA measures regional air quality index (AQI) by how hazardous it is to the general public. Discover the AQI in your city by ...

Senior writer Chris DeWeese edits Morning Brief, The Weather Channel’s weekday newsletter.

Symptoms of climate change, such as extreme weather events and wildfires, can significantly impact air quality, potentially ...

What Is a Normal Air Quality Index? A normal AQI falls between 0 to 50, according to the US Air Quality Index. This ranking indicates that the air quality is good and poses little or no risk to ...

The Texas Commission on Environmental Quality has issued an Ozone Action Day, also known as an Air Quality Alert, for the ...

The United States Environmental Protection Agency monitors and issues ... Air quality is measured by the Air Quality Index, or AQI. The index was created by the Environmental Protection Agency in 1999 ...

The US government has halted air quality data sharing from embassies and consulates due to funding constraints. Scientists warn that the decision will weaken global air pollution monitoring and ...

The United States Environmental Protection Agency monitors and ... Air quality is measured by the Air Quality Index, or AQI. The index was created by the Environmental Protection Agency in 1999. When ...

As the fires burned in Los Angeles, scientists and local air regulators deployed monitors to measure the levels of heavy ...

It comprises two measures: the number of days with an air quality index below a certain threshold and the number of violation points against drinking water systems in each state. Learn more about ...

and forecast models to provide real-time air quality index (AQI) readings for more than 1,000 locations. Los Angeles’ air quality is closely tied to weather patterns. Clear, breezy days help ...