Fresno Air Quality in July
Across 2019–2025, Fresno's July air quality had a median AQI of 90 (Moderate) over 217 monitored days in the Fresno, CA area. 32.2% of July days (70 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 91.7% of days. The cleanest July on record here was 2025 (median AQI 67, 3 days above 100) and the worst was 2024 (median 115, 20 days above 100, peak AQI 169).
- Good: 6.0%
- Moderate: 61.8%
- Unhealthy for Sensitive Groups: 27.6%
- Unhealthy or worse: 4.6%
Extra Protection for Fresno Homes
Air quality in Fresno is moderate (AQI 69), 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.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Fresno in July?
Moderate on a typical day: median AQI 90 across 2019–2025, with 32.2% of July days above AQI 100. Ground-level ozone is the main driver.
- ✓6.0% of July days were Good (AQI 0–50), 61.8% Moderate (51–100).
- ✓70 days of 217 reached AQI 101+; the July peak was 169.
- ✓Best July: 2025; worst July: 2024.
Frequently asked questions
What is the air quality like in Fresno in July?▾
Across 2019–2025, the median daily AQI in Fresno in July was 90 (Moderate). 6.0% of days were Good, 61.8% Moderate, and 32.2% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is July a good time for outdoor exercise in Fresno?▾
A typical July day in Fresno is Moderate (median AQI 90): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 3 of July days (32.2%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Fresno's July air quality problems?▾
Ground-level ozone set the daily AQI on 91.7% of July days in Fresno. The highest July AQI recorded in 2019–2025 was 169 (Unhealthy), in 2024.
Fresno July air quality, year by year
Fresno July air quality by year (Fresno, CA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 87 | 7 | 133 | O3 |
| 2020 | 31 | 90 | 6 | 119 | O3 |
| 2021 | 31 | 93 | 10 | 143 | O3 |
| 2022 | 31 | 80 | 8 | 119 | O3 |
| 2023 | 31 | 101 | 16 | 156 | O3 |
| 2024worst | 31 | 115 | 20 | 169 | O3 |
| 2025cleanest | 31 | 67 | 3 | 133 | O3 |
What July air means in Fresno
A typical July day in Fresno is Moderate (median AQI 90): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 3 of July days (32.2%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
July's median AQI of 90 is above Fresno's whole-year median of 67, making it one of the area's dirtier periods. Nationally, the median July AQI across every EPA metro area (103,858 metro-days, 2019–2025) is 47, so Fresno runs above the national July norm; 32.2% of its July days topped AQI 100 versus 3.6% nationally (above average).
July is part of Fresno's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Fresno
The latest EPA AirNow observation puts Fresno's AQI at 69 (PM10). The figures above are multi-year month statistics, not today's reading.
View current Fresno air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Fresno, 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.