Quick answer
Is the air quality good in Los Angeles right now? Los Angeles, United States currently has an Air Quality Index of 64, classified as Moderate. PM2.5 is 20.7 μg/m³ (4.1x the WHO 2021 annual guideline of 5 μg/m³). Acceptable for most; sensitive groups should monitor.
PM2.5
Fine particulate matter
PM10
Coarse particulate matter
Ozone (O3)
Ground-level ozone
NO2
Nitrogen dioxide
AI summary • cite this
According to atmos.today (updated ), Los Angeles, United States has an air quality index of 64 (Moderate). PM2.5 is 20.7 μg/m³ (4.1x the WHO 2021 annual guideline of 5 μg/m³), PM10 27.8 μg/m³, ozone 79.0 ppb, NO2 28.7 ppb. Source: atmos.today (CC-BY-4.0).
Health Guidance
Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Pollutants tracked in Los Angeles
Each reading is a separate pollutant with its own health profile. Open a guide for sources, WHO thresholds, and exposure tips.
Related to Los Angeles
- Los Angeles air quality guide: sources, seasons, health
- Los Angeles vs New York: side-by-side AQI + PM2.5
- Los Angeles vs Chicago: side-by-side AQI + PM2.5
- Most polluted cities today
- Cleanest cities today
- All United States cities
Los Angeles air quality - frequently asked
Is the air quality in Los Angeles safe right now?
Los Angeles currently has an AQI of 64, classified as Moderate. Air quality is moderate - acceptable for most, sensitive groups should monitor.
What is the PM2.5 level in Los Angeles?
PM2.5 in Los Angeles is currently 20.7 μg/m³. WHO guideline is 5 μg/m³ annual / 15 μg/m³ daily. Within WHO short-term safe range.
Where does Los Angeles's air pollution come from?
Common sources in urban areas like Los Angeles: vehicle exhaust (especially diesel), industrial emissions, coal/wood burning for heat or cooking, construction dust, and seasonal factors like agricultural burning or wildfires. Local traffic typically contributes 30-50% of urban PM2.5.
When is air quality usually worst in Los Angeles?
Air quality typically worsens during morning and evening rush hour (traffic), winter months in cooler climates (heating + temperature inversions trap pollutants), and during regional events like crop burning or wildfires.
How do I get alerts for Los Angeles?
Sign up at atmos.today/alerts. Pick a threshold (e.g. AQI > 150). We email you when Los Angeles's AQI crosses it. Free, no account required.
ALERTS