Outdoor
Consider keeping outdoor activity lighter until conditions improve.
Why: AQI or pollutant levels are elevated, so this guidance is more cautious.
Los Angeles, California, United States
Los Angeles air quality today
Consider keeping outdoor activity lighter until conditions improve.
Data: Current Open-Meteo model estimate
Practical guidance
Running
Outdoor running is generally fine. If you are sensitive to air pollution, consider keeping the effort easy.
Why: Air quality indicators are elevated, so the running guidance is more cautious.
Ventilation
Consider waiting before longer ventilation.
Why: PM2.5, PM10, NO2 or ozone is elevated, so longer ventilation may bring more outdoor pollution indoors.
Air quality and outdoor metrics
US AQI
Air Quality Index
78
Moderate
PM2.5
Fine particulate matter
18.0µg/m³
Moderate
PM10
Coarse particulate matter
20.7µg/m³
Moderate
NO₂
Nitrogen dioxide
40µg/m³
Moderate
O₃
Ozone
29µg/m³
Low
UV index
Sun exposure level
0
Low
Temperature
Air temperature
28°C
Warm
Feels like
Apparent temperature
29°C
Warm
Wind
Wind speed
7km/h
Light
Humidity
Relative humidity
42%
Comfortable
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Disclaimer
This information is a general estimate only and is not medical advice.
Location
Los Angeles, United States
Coordinates: 34.0522, -118.2437 · America/Los_Angeles
Interpret AQI for outdoor activity
Calculic's European AQI calculator assesses the value using your population group and planned activity intensity.
Interpret AQI in CalculicThis page's European AQI value, city and timestamp are passed to the calculator through the link.
What affects air quality in Los Angeles
For the South Coast Air Basin, South Coast AQMD identifies abundant sunlight and the surrounding mountain ranges as favorable conditions for smog formation.
This is basin-wide factor context, not a claim about current or uniform conditions across the City of Los Angeles.
Local monitoring and context
South Coast AQMD divides Los Angeles County readings into multiple monitoring subregions, including Central L.A., coastal areas, valleys and mountain areas.
The source is county- and subregion-scoped; no single subregion is presented as a citywide Los Angeles reading.
Within its jurisdiction, South Coast AQMD calculates neighborhood-grid AQI with regulatory-monitor measurements plus quality-controlled sensor data and an air-quality model.
This describes South Coast AQMD's own service and does not identify the source of the current data shown on this page.
City air quality FAQ
How should I read the AQI for Los Angeles?
US AQI condenses air quality into one value. On this page, it helps you quickly judge whether conditions look good, moderate or more polluted than usual.
Is the air quality good for going outside?
Check the outdoor and running cards first. They combine AQI, particles, ozone, weather and other factors that can affect outdoor comfort.
Should I ventilate right now?
The ventilation card considers AQI and pollutants such as particles, nitrogen dioxide and ozone. If values are elevated, a shorter opening or a later moment may be better.
Why can air quality change during the day?
Weather, emissions, ozone formation, particles and air flow can shift local conditions, so the next hours can differ from the current reading.
Sources and methodology
Current data
This page uses US AQI.
Current and hourly air-quality values are CAMS-based model estimates, not measurements from a local monitoring station. They may not reflect street-level conditions.
- Displayed state
- Current model estimate
- Data time
- 3 Sept 2026, 12:00 am
- Data source
- Open-Meteo
Evergreen city statements
Each local statement is linked to a checked primary-authority source. A source check is editorial provenance and does not describe current-data freshness.
Local sources support the background claims below; they are not the source of the current data shown above unless explicitly stated otherwise.
Authoritative sources for local statements
Final 2022 Air Quality Management Plan, Chapter 1
South Coast Air Quality Management District
- Scope
- South Coast Air Basin
- Source checked
- 21 Aug 2026
Identifies abundant sunlight and surrounding mountain ranges as favorable conditions for smog formation in the Basin.
Applicability: Regional South Coast Air Basin context; it does not describe a uniform citywide or current condition.
Based on this source: For the South Coast Air Basin, South Coast AQMD identifies abundant sunlight and the surrounding mountain ranges as favorable conditions for smog formation.
Current Readings at Air Monitoring Subregions
South Coast Air Quality Management District
- Scope
- Los Angeles County
- Source checked
- 21 Aug 2026
Lists distinct Los Angeles County monitoring subregions, including central, coastal, valley and mountain areas.
Applicability: The listed units are county monitoring subregions, not a single citywide Los Angeles observation.
Based on this source: South Coast AQMD divides Los Angeles County readings into multiple monitoring subregions, including Central L.A., coastal areas, valleys and mountain areas.
AQI Information and FAQs
South Coast Air Quality Management District
- Scope
- South Coast AQMD jurisdiction
- Source checked
- 21 Aug 2026
Explains how regulatory monitors, quality-controlled sensors and a model are combined for AQI grid cells.
Applicability: Describes South Coast AQMD's grid methodology and is not provenance for the current data shown on this page.
Based on this source: Within its jurisdiction, South Coast AQMD calculates neighborhood-grid AQI with regulatory-monitor measurements plus quality-controlled sensor data and an air-quality model.