Knoxville Air Quality in 2022
In 2022, Knoxville's air quality (Knoxville, TN area) had a median daily AQI of 52 (Moderate) across 365 monitored days. 2 days (0.5%) reached Unhealthy for Sensitive Groups or worse, 167 were Good, and the year's peak AQI was 162 (Unhealthy). Fine particulate matter (PM2.5) set the daily AQI on 239 of those days. The cleanest month of 2022 was September (median AQI 44, 0 days above 100) and the worst was June (median 60, 1 day above 100, peak 115).
- Good: 45.8%
- Moderate: 53.7%
- Unhealthy for Sensitive Groups: 0.3%
- Unhealthy or worse: 0.3%
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How was Knoxville's air quality in 2022?
Moderate on a typical day: median AQI 52, with 2 days above AQI 100 out of 365 monitored — the 4th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 162 (Unhealthy).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 239 days.
- ✓Cleanest month: September; worst: June.
Frequently asked questions
What was the average AQI in Knoxville in 2022?▾
EPA's Air Quality System puts Knoxville's (Knoxville, TN) median daily AQI for 2022 at 52, which is Moderate. 2 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 162.
Which month had the worst air quality in Knoxville in 2022?▾
The cleanest month of 2022 was September (median AQI 44, 0 days above 100) and the worst was June (median 60, 1 day above 100, peak 115).
Was 2022 a good or bad year for Knoxville's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 4th cleanest by days above AQI 100. 2022's median of 52 is in line with the area's typical annual median of 52.
Knoxville month by month in 2022
Knoxville air quality month by month, 2022 (Knoxville, TN, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 55 | 0 | 73 | PM2.5 |
| February | 28 | 52 | 0 | 71 | PM2.5 |
| March | 31 | 48 | 0 | 97 | O3 |
| April | 30 | 50 | 0 | 77 | O3 |
| May | 31 | 51 | 0 | 93 | PM2.5 |
| Juneworst | 30 | 60 | 1 | 115 | O3 |
| July | 31 | 52 | 0 | 77 | PM2.5 |
| August | 31 | 51 | 0 | 67 | PM2.5 |
| Septembercleanest | 30 | 44 | 0 | 67 | O3 |
| October | 31 | 47 | 1 | 162 | PM2.5 |
| November | 30 | 53 | 0 | 65 | PM2.5 |
| December | 31 | 51 | 0 | 66 | PM2.5 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 4th cleanest by days above AQI 100.
2022's median of 52 is in line with the area's typical annual median of 52.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Knoxville
The latest EPA AirNow observation puts Knoxville's AQI at 50 (PM2.5). The figures above are multi-year annual 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.