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)
62
Moderate
Knoxville, Tennessee
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
14.67 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
65.81 μg/m³
0
55
155
255
425
605+
3.63 ppb
0
55
71
86
201
201+
0.52 ppb
0
36
76
186
605
1005+
11.97 ppb
0
54
101
361
1250
2050+
0.48 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Knoxville, Tennessee
Knoxville, Tennessee
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AQI 60
Moderate
13.79μg/m³
PM2.5
61.44μg/m³
PM10
5.21ppb
O3
0.51ppb
SO2
12.19ppb
NO2
0.48ppm
CO
AQI 58
Moderate
12.60μg/m³
PM2.5
61.52μg/m³
PM10
17.14ppb
O3
0.57ppb
SO2
9.44ppb
NO2
0.49ppm
CO
AQI 44
Good
8.18μg/m³
PM2.5
35.69μg/m³
PM10
16.29ppb
O3
0.52ppb
SO2
13.34ppb
NO2
0.49ppm
CO
AQI 44
Good
7.79μg/m³
PM2.5
34.04μg/m³
PM10
16.93ppb
O3
0.52ppb
SO2
13.43ppb
NO2
0.49ppm
CO
AQI 67
Moderate
18.35μg/m³
PM2.5
60.79μg/m³
PM10
11.09ppb
O3
0.55ppb
SO2
9.45ppb
NO2
0.42ppm
CO
AQI 58
Moderate
13.41μg/m³
PM2.5
49.69μg/m³
PM10
10.16ppb
O3
0.54ppb
SO2
10.64ppb
NO2
0.41ppm
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 05:00:00 on 2025-12-07.
In the last 24 hours, the best air quality in Knoxville, Tennessee was observed at 12:00:00 on 2025-12-07.
As of now, the AQI in Knoxville, Tennessee is 62, indicating Moderate 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 14.672 μg/m3.
The PM10 concentration in Knoxville, Tennessee is 65.81 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Knoxville, Tennessee is 0.485 ppm.
Currently, Knoxville, Tennessee has a sulfur dioxide (SO2) concentration of 0.515 ppb.
The current ozone (O3) level in Knoxville, Tennessee at the moment is 3.625 ppm.
Nitrogen dioxide (NO2) level in Knoxville, Tennessee at the moment is 11.969 ppb.
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