Knoxville Air Quality in 2024
In 2024, Knoxville's air quality (Knoxville, TN area) had a median daily AQI of 52 (Moderate) across 366 monitored days. 1 day (0.3%) reached Unhealthy for Sensitive Groups or worse, 166 were Good, and the year's peak AQI was 105 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 213 of those days. The cleanest month of 2024 was January (median AQI 43, 0 days above 100) and the worst was August (median 56, 1 day above 100, peak 105).
- Good: 45.4%
- Moderate: 54.4%
- Unhealthy for Sensitive Groups: 0.3%
- 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 was Knoxville's air quality in 2024?
Moderate on a typical day: median AQI 52, with 1 day above AQI 100 out of 366 monitored — the 2nd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2024: 105 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 213 days.
- ✓Cleanest month: January; worst: August.
Frequently asked questions
What was the average AQI in Knoxville in 2024?▾
EPA's Air Quality System puts Knoxville's (Knoxville, TN) median daily AQI for 2024 at 52, which is Moderate. 1 day were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 105.
Which month had the worst air quality in Knoxville in 2024?▾
The cleanest month of 2024 was January (median AQI 43, 0 days above 100) and the worst was August (median 56, 1 day above 100, peak 105).
Was 2024 a good or bad year for Knoxville's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 2nd cleanest by days above AQI 100. 2024's median of 52 is in line with the area's typical annual median of 52.
Knoxville month by month in 2024
Knoxville air quality month by month, 2024 (Knoxville, TN, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| Januarycleanest | 31 | 43 | 0 | 66 | PM2.5 |
| February | 29 | 52 | 0 | 79 | PM2.5 |
| March | 31 | 52 | 0 | 88 | O3 |
| April | 30 | 54 | 0 | 80 | O3 |
| May | 31 | 49 | 0 | 67 | O3 |
| June | 30 | 60 | 0 | 90 | O3 |
| July | 31 | 55 | 0 | 100 | PM2.5 |
| Augustworst | 31 | 56 | 1 | 105 | O3 |
| September | 30 | 44 | 0 | 77 | O3 |
| October | 31 | 55 | 0 | 68 | PM2.5 |
| November | 30 | 43 | 0 | 70 | PM2.5 |
| December | 31 | 46 | 0 | 74 | PM2.5 |
How 2024 compares
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 2nd cleanest by days above AQI 100.
2024'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 61 (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.