Los Angeles Winter AQI: Air Quality Guide
Learn about winter air quality patterns in Los Angeles and how to stay safe during this season.
Current Air Quality
Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Seasonal Patterns
Winter air quality in Los Angeles is influenced by weather patterns, temperature inversions, and seasonal activities. Check our seasonal guides for more information.
View Current Air Quality →PM2.5 Levels
Fine particulate matter data →
Ozone Levels
Ground-level ozone data →
Seasonal Guides
Air quality by season →
Health Effects
Learn about air pollution impacts →
Frequently Asked Questions About Los Angeles Air Quality
What is the current air quality in Los Angeles?
The current Air Quality Index (AQI) in Los Angeles, CA is 83, which is considered moderate.
Is it safe to exercise outdoors in Los Angeles?
Generally yes. With an AQI of 83, outdoor exercise is acceptable for most people. Sensitive individuals should monitor symptoms.
When is the best time of year to visit Los Angeles for good air quality?
Spring and early fall typically offer the best air quality in Los Angeles. Summer months may have elevated ozone levels, while winter can see higher PM2.5 from temperature inversions.
What causes air pollution in Los Angeles?
Air pollution in Los Angeles can come from vehicle emissions, industrial activity, construction, wildfires, and weather patterns. Local geography and seasonal factors also play a significant role.