Visalia Air Quality in November
Across 2019–2025, Visalia's November air quality had a median AQI of 74 (Moderate) over 210 monitored days in the Visalia-Porterville, CA area. 13.8% of November days (29 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 85.7% of days. The cleanest November on record here was 2024 (median AQI 65, 0 days above 100) and the worst was 2020 (median 83, 10 days above 100, peak AQI 121).
- Good: 12.4%
- Moderate: 73.8%
- Unhealthy for Sensitive Groups: 13.3%
- Unhealthy or worse: 0.5%
Extra Protection for Visalia Homes
Air quality in Visalia is moderate (AQI 66), with fine particles (PM2.5) 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 Visalia in November?
Moderate on a typical day: median AQI 74 across 2019–2025, with 13.8% of November days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓12.4% of November days were Good (AQI 0–50), 73.8% Moderate (51–100).
- ✓29 days of 210 reached AQI 101+; the November peak was 151.
- ✓Best November: 2024; worst November: 2020.
Frequently asked questions
What is the air quality like in Visalia in November?▾
Across 2019–2025, the median daily AQI in Visalia in November was 74 (Moderate). 12.4% of days were Good, 73.8% Moderate, and 13.8% 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 Visalia?▾
A typical November day in Visalia is Moderate (median AQI 74): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 7 of November days (13.8%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Visalia's November air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 85.7% of November days in Visalia. The highest November AQI recorded in 2019–2025 was 151 (Unhealthy), in 2020.
Visalia November air quality, year by year
Visalia November air quality by year (Visalia-Porterville, CA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 86 | 6 | 151 | PM2.5 |
| 2020worst | 30 | 83 | 10 | 121 | PM2.5 |
| 2021 | 30 | 87 | 7 | 120 | PM2.5 |
| 2022 | 30 | 80 | 6 | 133 | PM2.5 |
| 2023 | 30 | 68 | 0 | 97 | PM2.5 |
| 2024cleanest | 30 | 65 | 0 | 83 | PM2.5 |
| 2025 | 30 | 66 | 0 | 94 | PM2.5 |
What November air means in Visalia
A typical November day in Visalia is Moderate (median AQI 74): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 7 of November days (13.8%) 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 74 is in line with Visalia's whole-year median of 71, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median November AQI across every EPA metro area (92,704 metro-days, 2019–2025) is 39, so Visalia runs above the national November norm; 13.8% of its November days topped AQI 100 versus 0.6% nationally (above average).
November is part of Visalia's fall season (September, October, November); the fall page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Visalia
The latest EPA AirNow observation puts Visalia's AQI at 66 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Visalia air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Visalia-Porterville, 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.