Stockton Air Quality in November
Across 2019–2025, Stockton's November air quality had a median AQI of 64 (Moderate) over 210 monitored days in the Stockton-Lodi, CA area. 2.9% of November days (6 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 90.5% of days. The cleanest November on record here was 2025 (median AQI 54, 0 days above 100) and the worst was 2020 (median 68, 2 days above 100, peak AQI 108).
- Good: 23.8%
- Moderate: 73.3%
- Unhealthy for Sensitive Groups: 2.9%
- Unhealthy or worse: 0.0%
Extra Protection for Stockton Homes
Air quality in Stockton is moderate (AQI 60), with particle pollution the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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How is the air in Stockton in November?
Moderate on a typical day: median AQI 64 across 2019–2025, with 2.9% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓23.8% of November days were Good (AQI 0–50), 73.3% Moderate (51–100).
- ✓6 days of 210 reached AQI 101+; the November peak was 141.
- ✓Best November: 2025; worst November: 2020.
Frequently asked questions
What is the air quality like in Stockton in November?▾
Across 2019–2025, the median daily AQI in Stockton in November was 64 (Moderate). 23.8% of days were Good, 73.3% Moderate, and 2.9% 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 Stockton?▾
A typical November day in Stockton is Moderate (median AQI 64): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 34 of November days (2.9%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Stockton's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 90.5% of November days in Stockton. The highest November AQI recorded in 2019–2025 was 141 (Unhealthy for Sensitive Groups), in 2020.
Stockton November air quality, year by year
Stockton November air quality by year (Stockton-Lodi, CA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 75 | 0 | 95 | PM2.5 |
| 2020worst | 30 | 68 | 2 | 108 | PM2.5 |
| 2021 | 30 | 68 | 1 | 106 | PM2.5 |
| 2022 | 30 | 63 | 2 | 141 | PM2.5 |
| 2023 | 30 | 66 | 0 | 99 | PM2.5 |
| 2024 | 30 | 59 | 1 | 103 | PM2.5 |
| 2025cleanest | 30 | 54 | 0 | 82 | PM2.5 |
What November air means in Stockton
A typical November day in Stockton is Moderate (median AQI 64): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 34 of November days (2.9%) 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 64 is above Stockton's whole-year median of 48, making it one of the area's dirtier periods. Nationally, the median November AQI across every EPA metro area (92,704 metro-days, 2019–2025) is 39, so Stockton runs above the national November norm; 2.9% of its November days topped AQI 100 versus 0.6% nationally (above average).
November is part of Stockton's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Stockton
The latest EPA AirNow observation puts Stockton's AQI at 60 (PM10). The figures above are multi-year month statistics, not today's reading.
View current Stockton air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Stockton-Lodi, 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.