Key Points
- Southern California and Arizona face “unhealthy” air pollution levels, urging residents to stay indoors.
- PM2.5 fine particle pollution dominates Los Angeles and Phoenix, reaching Air Quality Index red levels.
- EPA advises sensitive groups to limit outdoor activities; public should reduce outdoor exertion.
Residents across parts of Southern California and Arizona have been urged to stay inside as unhealthy levels of air pollution dominate the area, according to an interactive map from AirNow.
Los Angeles, Phoenix Being Hit by Unhealthy Levels of Particulate
The maps show an area of fine particle pollution reaching the “unhealthy” category in the Air Quality Index in many parts of Los Angeles and Phoenix. Elevated level of PM2.5, fine inhalable particles, with diameters that are generally 2.5 micrometers – 30 times smaller than the width of a human hair – have been seen across much of Southern California and Arizona…