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 ...

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

The Air Quality Index measured 156 near Forks, Washington, and received a rating of "unhealthy," meaning some members of the general public may experience health effects and members of sensitive ...

PM2.5 is capable of traveling thousands of miles across the world on the wind — taking, for instance, about five days to reach the US from China ... The Air Quality Index, set by the ...

Naturally, people in the Los Angeles area are reaching for their phones to see what the Air Quality Index (AQI ... even when the AQI can’t tell us the full picture. How to think about risk ...

Erin Davis/Axios Visuals Air quality in Salt Lake City is getting worse, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to our health. By the ...

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 ...