Knoxville Air Quality in June
Across 2019–2025, Knoxville's June air quality had a median AQI of 55 (Moderate) over 210 monitored days in the Knoxville, TN area. 2.9% of June days (6 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 50.0% of days. The cleanest June on record here was 2019 (median AQI 52, 0 days above 100) and the worst was 2023 (median 73, 5 days above 100, peak AQI 140).
- Good: 34.8%
- Moderate: 62.4%
- Unhealthy for Sensitive Groups: 2.9%
- Unhealthy or worse: 0.0%
Extra Protection for Knoxville Homes
Air quality in Knoxville is moderate (AQI 61), 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 Knoxville in June?
Moderate on a typical day: median AQI 55 across 2019–2025, with 2.9% of June days above AQI 100. Ground-level ozone is the main driver.
- ✓34.8% of June days were Good (AQI 0–50), 62.4% Moderate (51–100).
- ✓6 days of 210 reached AQI 101+; the June peak was 140.
- ✓Best June: 2019; worst June: 2023.
Frequently asked questions
What is the air quality like in Knoxville in June?▾
Across 2019–2025, the median daily AQI in Knoxville in June was 55 (Moderate). 34.8% of days were Good, 62.4% Moderate, and 2.9% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is June a good time for outdoor exercise in Knoxville?▾
A typical June day in Knoxville is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 34 of June 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 Knoxville's June air quality problems?▾
Ground-level ozone set the daily AQI on 50.0% of June days in Knoxville. The highest June AQI recorded in 2019–2025 was 140 (Unhealthy for Sensitive Groups), in 2023.
Knoxville June air quality, year by year
Knoxville June air quality by year (Knoxville, TN, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 30 | 52 | 0 | 87 | O3 |
| 2020 | 30 | 53 | 0 | 93 | O3 |
| 2021 | 30 | 52 | 0 | 90 | PM2.5 |
| 2022 | 30 | 60 | 1 | 115 | O3 |
| 2023worst | 30 | 73 | 5 | 140 | O3 |
| 2024 | 30 | 60 | 0 | 90 | O3 |
| 2025 | 30 | 54 | 0 | 77 | PM2.5 |
What June air means in Knoxville
A typical June day in Knoxville is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 34 of June days (2.9%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
June's median AQI of 55 is in line with Knoxville's whole-year median of 52, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so Knoxville runs above the national June norm; 2.9% of its June days topped AQI 100 versus 3.7% nationally (about the same).
June is part of Knoxville's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Knoxville
The latest EPA AirNow observation puts Knoxville's AQI at 61 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Knoxville air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Knoxville, TN), 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.