Salt Lake City Air Quality in July
Across 2019–2025, Salt Lake City's July air quality had a median AQI of 84 (Moderate) over 217 monitored days in the Salt Lake City, UT area. 28.1% of July days (61 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 82.0% of days. The cleanest July on record here was 2025 (median AQI 71, 3 days above 100) and the worst was 2021 (median 108, 19 days above 100, peak AQI 177).
- Good: 2.8%
- Moderate: 69.1%
- Unhealthy for Sensitive Groups: 25.8%
- Unhealthy or worse: 2.3%
Extra Protection for Salt Lake City Homes
Air quality in Salt Lake City is moderate (AQI 52), 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.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
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How is the air in Salt Lake City in July?
Moderate on a typical day: median AQI 84 across 2019–2025, with 28.1% of July days above AQI 100. Ground-level ozone is the main driver.
- ✓2.8% of July days were Good (AQI 0–50), 69.1% Moderate (51–100).
- ✓61 days of 217 reached AQI 101+; the July peak was 214.
- ✓Best July: 2025; worst July: 2021.
Frequently asked questions
What is the air quality like in Salt Lake City in July?▾
Across 2019–2025, the median daily AQI in Salt Lake City in July was 84 (Moderate). 2.8% of days were Good, 69.1% Moderate, and 28.1% 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 Salt Lake City?▾
A typical July day in Salt Lake City is Moderate (median AQI 84): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 4 of July days (28.1%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Salt Lake City's July air quality problems?▾
Ground-level ozone set the daily AQI on 82.0% of July days in Salt Lake City. The highest July AQI recorded in 2019–2025 was 214 (Very Unhealthy), in 2021.
Salt Lake City July air quality, year by year
Salt Lake City July air quality by year (Salt Lake City, UT, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 71 | 4 | 129 | O3 |
| 2020 | 31 | 77 | 8 | 214 | O3 |
| 2021worst | 31 | 108 | 19 | 177 | O3 |
| 2022 | 31 | 80 | 5 | 147 | O3 |
| 2023 | 31 | 74 | 4 | 119 | O3 |
| 2024 | 31 | 101 | 18 | 153 | O3 |
| 2025cleanest | 31 | 71 | 3 | 122 | O3 |
What July air means in Salt Lake City
A typical July day in Salt Lake City is Moderate (median AQI 84): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 4 of July days (28.1%) 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 84 is above Salt Lake City's whole-year median of 57, 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 Salt Lake City runs above the national July norm; 28.1% of its July days topped AQI 100 versus 3.6% nationally (above average).
July is part of Salt Lake City's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Salt Lake City
The latest EPA AirNow observation puts Salt Lake City's AQI at 52 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Salt Lake City air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Salt Lake City, UT), 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.