United States
Air quality in Los Angeles is poor. Sensitive individuals should exercise indoors.
Data from Open-Meteo • Updated 8:51:47 AM
Los Angeles is historically known for smog, driven by its geography — a basin surrounded by mountains that traps pollutants. While air quality has improved dramatically since the 1970s, LA still experiences elevated ozone and PM2.5 levels, particularly in the San Fernando and San Gabriel Valleys. Wildfire smoke can severely worsen conditions during fire season.
LA's AQI typically ranges from 40 to 100, with inland valleys often seeing higher readings than coastal areas. Summer ozone regularly pushes the AQI into the Unhealthy for Sensitive Groups range.
Early morning along the coast offers the cleanest air, as ocean breezes help clear pollutants. Avoid running in inland valleys during afternoon hours in summer, when ozone peaks.