The impact fireworks can have on air quality can be quite striking and seemingly outsized given their relatively small ...

According to the Maricopa County Air Quality Map, several parts of the Valley had an air quality level listed in the "very ...

Early one October afternoon in 2023, thick gray smoke drifted across Sheffield's western skyline. As much of the city became ...

Each Air Quality Index category, also known as the level of concern, is attached to a certain range of values: Good (green): 0 to 50 Moderate (yellow): 51 to 100 ...

Potentially hazardous air quality has gripped Phoenix, Arizona, as a combination of stagnant weather, windblown dust, and warm temperatures fueled a rise in PM10 pollution, prompting hazy skies and ...

Friday is expected to be similarly bad, and the EPA extended its air quality alert through the end of the day Friday. Levels between 200 and 300 are “very unhealthy,” and anything between 300 ...

Columbus' air quality worsened due to Canadian wildfire smoke drifting over the city, turning the air unhealthy for sensitive groups, according to AirNow.gov.. The city's air quality index (AQI ...