Los Angeles Air Quality in November
Across 2019–2025, Los Angeles's November air quality had a median AQI of 70 (Moderate) over 210 monitored days in the Los Angeles-Long Beach-Anaheim, CA area. 10.5% of November days (22 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 85.2% of days. The cleanest November on record here was 2024 (median AQI 64, 1 day above 100) and the worst was 2021 (median 84, 7 days above 100, peak AQI 158).
- Good: 4.3%
- Moderate: 85.2%
- Unhealthy for Sensitive Groups: 9.5%
- Unhealthy or worse: 1.0%
Reduce Indoor Ozone in Los Angeles
Today's main pollutant in Los Angeles is ground-level ozone (AQI 38). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Los Angeles in November?
Moderate on a typical day: median AQI 70 across 2019–2025, with 10.5% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓4.3% of November days were Good (AQI 0–50), 85.2% Moderate (51–100).
- ✓22 days of 210 reached AQI 101+; the November peak was 164.
- ✓Best November: 2024; worst November: 2021.
Frequently asked questions
What is the air quality like in Los Angeles in November?▾
Across 2019–2025, the median daily AQI in Los Angeles in November was 70 (Moderate). 4.3% of days were Good, 85.2% Moderate, and 10.5% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is November a good time for outdoor exercise in Los Angeles?▾
A typical November day in Los Angeles is Moderate (median AQI 70): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 10 of November days (10.5%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Los Angeles's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 85.2% of November days in Los Angeles. The highest November AQI recorded in 2019–2025 was 164 (Unhealthy), in 2021.
Los Angeles November air quality, year by year
Los Angeles November air quality by year (Los Angeles-Long Beach-Anaheim, CA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 79 | 6 | 121 | PM2.5 |
| 2020 | 30 | 79 | 3 | 114 | PM2.5 |
| 2021worst | 30 | 84 | 7 | 158 | PM2.5 |
| 2022 | 30 | 66 | 1 | 117 | PM2.5 |
| 2023 | 30 | 63 | 2 | 164 | PM2.5 |
| 2024cleanest | 30 | 64 | 1 | 108 | PM2.5 |
| 2025 | 30 | 65 | 2 | 115 | PM2.5 |
What November air means in Los Angeles
A typical November day in Los Angeles is Moderate (median AQI 70): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 10 of November days (10.5%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
November's median AQI of 70 is below Los Angeles's whole-year median of 74, making it one of the area's cleaner periods. Nationally, the median November AQI across every EPA metro area (92,704 metro-days, 2019–2025) is 39, so Los Angeles runs above the national November norm; 10.5% of its November days topped AQI 100 versus 0.6% nationally (above average).
November is part of Los Angeles's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Los Angeles
The latest EPA AirNow observation puts Los Angeles's AQI at 38 (O3). The figures above are multi-year month statistics, not today's reading.
View current Los Angeles air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Los Angeles-Long Beach-Anaheim, CA), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.