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)
44
Good
Knoxville, Tennessee
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
35.66 μg/m³
0
55
155
255
425
605+
14.42 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
7.22 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Knoxville, Tennessee
Knoxville, Tennessee
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AQI 44
Good
7.98μg/m³
PM2.5
35.63μg/m³
PM10
13.37ppb
O3
0.57ppb
SO2
7.23ppb
NO2
0.21ppm
CO
AQI 44
Good
8.08μg/m³
PM2.5
35.29μg/m³
PM10
10.64ppb
O3
0.60ppb
SO2
7.12ppb
NO2
0.21ppm
CO
AQI 44
Good
8.38μg/m³
PM2.5
37.00μg/m³
PM10
20.16ppb
O3
0.54ppb
SO2
7.17ppb
NO2
0.22ppm
CO
AQI 44
Good
8.42μg/m³
PM2.5
37.19μg/m³
PM10
20.29ppb
O3
0.54ppb
SO2
7.17ppb
NO2
0.22ppm
CO
AQI 44
Good
7.56μg/m³
PM2.5
33.80μg/m³
PM10
9.64ppb
O3
0.56ppb
SO2
7.28ppb
NO2
0.20ppm
CO
AQI 44
Good
7.85μg/m³
PM2.5
34.76μg/m³
PM10
13.36ppb
O3
0.76ppb
SO2
7.32ppb
NO2
0.19ppm
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 09:00:00 on 2026-06-07.
In the last 24 hours, the best air quality in Knoxville, Tennessee was observed at 08:00:00 on 2026-06-08.
As of now, the AQI in Knoxville, Tennessee is 44, 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 8.011 μg/m3.
The PM10 concentration in Knoxville, Tennessee is 35.661 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Knoxville, Tennessee is 0.21 ppm.
Currently, Knoxville, Tennessee has a sulfur dioxide (SO2) concentration of 0.565 ppb.
The current ozone (O3) level in Knoxville, Tennessee at the moment is 14.418 ppm.
Nitrogen dioxide (NO2) level in Knoxville, Tennessee at the moment is 7.219 ppb.
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