Stay updated with real-time air quality in Knoxville, Tennessee featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
33
Good
Knoxville, Tennessee
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.17 μg/m³
0
55
155
255
425
605+
9.49 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
6.42 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Knoxville, Tennessee
Knoxville, Tennessee
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AQI 33
Good
6.41μg/m³
PM2.5
27.28μg/m³
PM10
9.07ppb
O3
0.45ppb
SO2
6.27ppb
NO2
0.18ppm
CO
AQI 33
Good
6.19μg/m³
PM2.5
22.92μg/m³
PM10
22.77ppb
O3
0.27ppb
SO2
5.93ppb
NO2
0.16ppm
CO
AQI 33
Good
5.60μg/m³
PM2.5
24.06μg/m³
PM10
16.64ppb
O3
0.33ppb
SO2
5.92ppb
NO2
0.16ppm
CO
AQI 33
Good
5.54μg/m³
PM2.5
23.59μg/m³
PM10
16.82ppb
O3
0.32ppb
SO2
5.90ppb
NO2
0.16ppm
CO
AQI 33
Good
6.03μg/m³
PM2.5
23.04μg/m³
PM10
5.15ppb
O3
0.45ppb
SO2
6.08ppb
NO2
0.20ppm
CO
AQI 38
Good
6.67μg/m³
PM2.5
18.17μg/m³
PM10
23.58ppb
O3
0.47ppb
SO2
5.98ppb
NO2
0.21ppm
CO
Air quality and pollutant data for Tennessee, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Knoxville, Tennessee is updated every hour for accuracy.
In the past 24 hours, the air quality in Knoxville, Tennessee was at its worst at 08:00:00 on 2026-09-06.
In the last 24 hours, the best air quality in Knoxville, Tennessee was observed at 07:00:00 on 2026-09-07.
As of now, the AQI in Knoxville, Tennessee is 33, indicating Good conditions.
Knoxville, Tennessee air has the highest levels of PM2.5.
Poor air quality in Knoxville, Tennessee means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Knoxville, Tennessee are currently 6.283 μg/m3.
The PM10 concentration in Knoxville, Tennessee is 28.172 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Knoxville, Tennessee is 0.238 ppm.
Currently, Knoxville, Tennessee has a sulfur dioxide (SO2) concentration of 0.453 ppb.
The current ozone (O3) level in Knoxville, Tennessee at the moment is 9.49 ppm.
Nitrogen dioxide (NO2) level in Knoxville, Tennessee at the moment is 6.416 ppb.
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