A fast-moving wildfire continues burning in New Jersey’s Pine Barrens as of Wednesday morning — already consuming more than ...

The service provides information based on a measure called the Air Quality Index, which gauges just how bad the air has become in a particular place. Having an understanding of the Air Quality ...

An AQI value of 100 is considered the threshold for safe air quality. Values at or below 50 are considered good, with 51 to 100 considered “moderate,” or potentially risky for people who are ...

Various popular weather apps across Chicago showed that the air was unsafe to breathe early Wednesday morning, prompting ...