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Los Angeles Air Quality Index

Live AQI • Last updated

64
Moderate

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

20.7μg/m³

Fine particulate matter

PM10

27.8μg/m³

Coarse particulate matter

Ozone (O3)

79.0ppb

Ground-level ozone

NO2

28.7ppb

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.

PM2.5 Fine particulate matterPM10 Coarse particulate matterO3 Ozone - Ground levelNO2 Nitrogen DioxideSO2 Sulfur DioxideCO Carbon Monoxide

Related to Los Angeles

Other cities in United States

US

New York

46
AQI
PM2.5
10.4μg
PM10
18.2μg
O3
58.3ppb
Good

US

Chicago

52
AQI
PM2.5
12.3μg
PM10
22.1μg
O3
54.4ppb
Moderate

US

Houston

64
AQI
PM2.5
16.1μg
PM10
28.3μg
O3
52.4ppb
Moderate

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.

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