Chiang Mai faces severe air pollution from burning in Myanmar and Laos. 17 Thai provinces exceed PM2.5 safety levels.

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 ...

An air quality index (AQI) surpassing 200 is denoted by a purple color, while an AQI exceeding 300 is indicated by a maroon color, signifying dangerously high levels for human health. Dr Dharmaraj ...

In the following California air quality map, you can see how the air quality is where you live or throughout California. This information is provided via the United States Environmental Protection ...

The ozone season in Dallas-Fort Worth lasts most of the year hotter weather can have an impact on ground-level ozone and the ...

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 ...