Knoxville Air Quality in February
Across 2019–2025, Knoxville's February air quality had a median AQI of 48 (Good) over 198 monitored days in the Knoxville, TN area. 0.0% of February days (0 of 198) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 70.7% of days. The cleanest February on record here was 2020 (median AQI 41, 0 days above 100) and the worst was 2023 (median 53, 0 days above 100, peak AQI 75).
- Good: 54.0%
- Moderate: 46.0%
- Unhealthy for Sensitive Groups: 0.0%
- 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.
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How is the air in Knoxville in February?
Good on a typical day: median AQI 48 across 2019–2025, with 0.0% of February days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓54.0% of February days were Good (AQI 0–50), 46.0% Moderate (51–100).
- ✓0 days of 198 reached AQI 101+; the February peak was 79.
- ✓Best February: 2020; worst February: 2023.
Frequently asked questions
What is the air quality like in Knoxville in February?▾
Across 2019–2025, the median daily AQI in Knoxville in February was 48 (Good). 54.0% of days were Good, 46.0% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 198 monitored days in EPA's Air Quality System.
Is February a good time for outdoor exercise in Knoxville?▾
A typical February day in Knoxville sits in the Good range (median AQI 48), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
Which pollutant causes Knoxville's February air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 70.7% of February days in Knoxville. The highest February AQI recorded in 2019–2025 was 79 (Moderate), in 2023.
Knoxville February air quality, year by year
Knoxville February air quality by year (Knoxville, TN, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 28 | 43 | 0 | 66 | PM2.5 |
| 2020cleanest | 29 | 41 | 0 | 63 | O3 |
| 2021 | 28 | 52 | 0 | 63 | PM2.5 |
| 2022 | 28 | 52 | 0 | 71 | PM2.5 |
| 2023worst | 28 | 53 | 0 | 75 | PM2.5 |
| 2024 | 29 | 52 | 0 | 79 | PM2.5 |
| 2025 | 28 | 47 | 0 | 60 | PM2.5 |
What February air means in Knoxville
A typical February day in Knoxville sits in the Good range (median AQI 48), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
February's median AQI of 48 is below Knoxville's whole-year median of 52, making it one of the area's cleaner periods. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Knoxville runs above the national February norm; 0.0% of its February days topped AQI 100 versus 0.4% nationally (about the same).
February is part of Knoxville's winter season (December, January, February); the winter 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.