Hourly Weather | Today Thursday, February 26, 2026
Knoxville, Tennessee
5 AM
Rainy Weather
50°
Feels Like 43°
85
Humidity: 89%
UV Index: 0
Wind: 8 mph
6 AM
Rainy Weather
50°
Feels Like 41°
85
Humidity: 89%
UV Index: 0
Wind: 9 mph
7 AM
Cloudy Weather
48°
Feels Like 39°
49
Humidity: 97%
UV Index: 0
Wind: 18 mph
8 AM
Rainy Weather
48°
Feels Like 36°
68
Humidity: 98%
UV Index: 0
Wind: 20 mph
9 AM
Rainy Weather
50°
Feels Like 37°
68
Humidity: 96%
UV Index: 0
Wind: 21 mph
10 AM
Rainy Weather
52°
Feels Like 39°
65
Humidity: 94%
UV Index: 1
Wind: 21 mph
11 AM
Rainy Weather
54°
Feels Like 43°
65
Humidity: 89%
UV Index: 1
Wind: 21 mph
12 PM
Cloudy Weather
55°
Feels Like 48°
49
Humidity: 85%
UV Index: 1
Wind: 21 mph
1 PM
Rainy Weather
57°
Feels Like 46°
68
Humidity: 80%
UV Index: 1
Wind: 20 mph
2 PM
Rainy Weather
59°
Feels Like 48°
68
Humidity: 76%
UV Index: 1
Wind: 20 mph
3 PM
Cloudy Weather
63°
Feels Like 55°
49
Humidity: 67%
UV Index: 1
Wind: 21 mph
4 PM
Rainy Weather
61°
Feels Like 52°
68
Humidity: 70%
UV Index: 0
Wind: 21 mph
5 PM
Rainy Weather
59°
Feels Like 48°
68
Humidity: 72%
UV Index: 0
Wind: 20 mph
6 PM
Cloudy Weather
57°
Feels Like 48°
49
Humidity: 74%
UV Index: 0
Wind: 20 mph
7 PM
Cloudy Weather
54°
Feels Like 48°
4
Humidity: 76%
UV Index: 0
Wind: 14 mph
8 PM
Cloudy Weather
52°
Feels Like 45°
4
Humidity: 82%
UV Index: 0
Wind: 14 mph
9 PM
Cloudy Weather
50°
Feels Like 43°
4
Humidity: 83%
UV Index: 0
Wind: 14 mph
10 PM
Cloudy Weather
48°
Feels Like 41°
4
Humidity: 84%
UV Index: 0
Wind: 14 mph
11 PM
Cloudy Weather
48°
Feels Like 39°
4
Humidity: 86%
UV Index: 0
Wind: 14 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.85 µg/m³
  • PM10: 7.44 µg/m³
  • O3: 0.047 ppm
  • NO2: 1 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

6 AM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.37 µg/m³
  • PM10: 6.22 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 AM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.1 µg/m³
  • PM10: 5.18 µg/m³
  • O3: 0.045 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 AM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.7 µg/m³
  • PM10: 4.22 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.22 µg/m³
  • PM10: 3.49 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 AM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.9 µg/m³
  • PM10: 3.12 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.67 µg/m³
  • PM10: 2.9 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

12 PM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.48 µg/m³
  • PM10: 2.7 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

1 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.31 µg/m³
  • PM10: 2.47 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.21 µg/m³
  • PM10: 2.32 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 PM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.13 µg/m³
  • PM10: 2.24 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.98 µg/m³
  • PM10: 2.13 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

5 PM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.93 µg/m³
  • PM10: 2.95 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.05 µg/m³
  • PM10: 4.72 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

7 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.27 µg/m³
  • PM10: 6.56 µg/m³
  • O3: 0.020 ppm
  • NO2: 3.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

8 PM
16 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.53 µg/m³
  • PM10: 8.2 µg/m³
  • O3: 0.017 ppm
  • NO2: 4.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

9 PM
14 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.77 µg/m³
  • PM10: 9.55 µg/m³
  • O3: 0.015 ppm
  • NO2: 4.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

10 PM
12 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.02 µg/m³
  • PM10: 10.75 µg/m³
  • O3: 0.013 ppm
  • NO2: 4.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

11 PM
11 AQI
Good air quality Dominant pollutant: PM10
Details

Pollutant Concentrations:

  • PM2.5: 2.29 µg/m³
  • PM10: 11.69 µg/m³
  • O3: 0.012 ppm
  • NO2: 4.2 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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