Hourly Weather | Today Wednesday, May 20, 2026
Knoxville, Tennessee
6 PM
Stormy Weather
90°
Feels Like 84°
51
Humidity: 44%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
86°
Feels Like 86°
46
Humidity: 51%
UV Index: 0
Wind: 8 mph
8 PM
Stormy Weather
82°
Feels Like 81°
74
Humidity: 66%
UV Index: 0
Wind: 6 mph
9 PM
Stormy Weather
79°
Feels Like 75°
74
Humidity: 75%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
73°
Feels Like 75°
49
Humidity: 83%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
72°
Feels Like 72°
34
Humidity: 90%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.78 µg/m³
  • PM10: 8.7 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.55 µg/m³
  • PM10: 9.06 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.58 µg/m³
  • PM10: 9.89 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
25 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.02 µg/m³
  • PM10: 11.13 µg/m³
  • O3: 0.013 ppm
  • NO2: 2.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.53 µg/m³
  • PM10: 12.36 µg/m³
  • O3: 0.012 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.82 µg/m³
  • PM10: 13.25 µg/m³
  • O3: 0.012 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.