Hourly Weather | Today Tuesday, September 23, 2025
Knoxville, Tennessee
7 AM
Rainy Night
66°
Feels Like 64°
47
Humidity: 92%
Wind: 4 mph
UV Index: 0
8 AM
Cloudy Weather
66°
Feels Like 66°
25
Humidity: 96%
Wind: 5 mph
UV Index: 5
9 AM
Cloudy Weather
66°
Feels Like 70°
20
Humidity: 93%
Wind: 5 mph
UV Index: 11
10 AM
Cloudy Weather
70°
Feels Like 73°
20
Humidity: 87%
Wind: 6 mph
UV Index: 23
11 AM
Cloudy Weather
72°
Feels Like 77°
20
Humidity: 83%
Wind: 6 mph
UV Index: 34
12 PM
Cloudy Weather
75°
Feels Like 79°
20
Humidity: 75%
Wind: 7 mph
UV Index: 33
1 PM
Cloudy Weather
77°
Feels Like 81°
16
Humidity: 69%
Wind: 8 mph
UV Index: 30
2 PM
Cloudy Weather
79°
Feels Like 82°
7
Humidity: 64%
Wind: 8 mph
UV Index: 28
3 PM
Cloudy Weather
81°
Feels Like 82°
7
Humidity: 62%
Wind: 8 mph
UV Index: 25
4 PM
Cloudy Weather
82°
Feels Like 84°
7
Humidity: 60%
Wind: 8 mph
UV Index: 19
5 PM
Cloudy Weather
81°
Feels Like 81°
7
Humidity: 64%
Wind: 8 mph
UV Index: 12
6 PM
Cloudy Weather
79°
Feels Like 79°
7
Humidity: 69%
Wind: 7 mph
UV Index: 6
7 PM
Cloudy Weather
75°
Feels Like 77°
10
Humidity: 75%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
73°
Feels Like 75°
47
Humidity: 81%
Wind: 6 mph
UV Index: 0
9 PM
Stormy Weather
72°
Feels Like 72°
51
Humidity: 87%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
72°
Feels Like 72°
47
Humidity: 91%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
70°
Feels Like 72°
49
Humidity: 91%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.64 µg/m³
  • PM10: 9.98 µg/m³
  • O₃: 22.94 ppb
  • NO₂: 5.46 ppb
  • SO₂: 0.46 ppb
  • CO: 225.82 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.54 µg/m³
  • PM10: 9.44 µg/m³
  • O₃: 24.15 ppb
  • NO₂: 5.09 ppb
  • SO₂: 0.49 ppb
  • CO: 223.88 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.65 µg/m³
  • PM10: 9.25 µg/m³
  • O₃: 31.82 ppb
  • NO₂: 4.25 ppb
  • SO₂: 0.69 ppb
  • CO: 214.12 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 AM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.95 µg/m³
  • PM10: 7.20 µg/m³
  • O₃: 44.81 ppb
  • NO₂: 1.94 ppb
  • SO₂: 0.99 ppb
  • CO: 196.62 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 AM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.64 µg/m³
  • PM10: 6.98 µg/m³
  • O₃: 53.27 ppb
  • NO₂: 1.31 ppb
  • SO₂: 1.22 ppb
  • CO: 186.18 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

12 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.75 µg/m³
  • PM10: 8.16 µg/m³
  • O₃: 56.57 ppb
  • NO₂: 1.10 ppb
  • SO₂: 1.24 ppb
  • CO: 185.32 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

1 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.55 µg/m³
  • PM10: 8.98 µg/m³
  • O₃: 59.87 ppb
  • NO₂: 0.89 ppb
  • SO₂: 1.25 ppb
  • CO: 184.45 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

2 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.74 µg/m³
  • PM10: 9.17 µg/m³
  • O₃: 63.17 ppb
  • NO₂: 0.68 ppb
  • SO₂: 1.27 ppb
  • CO: 183.58 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

3 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.54 µg/m³
  • PM10: 8.92 µg/m³
  • O₃: 61.53 ppb
  • NO₂: 0.78 ppb
  • SO₂: 1.05 ppb
  • CO: 181.81 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

4 PM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.60 µg/m³
  • PM10: 8.97 µg/m³
  • O₃: 59.89 ppb
  • NO₂: 0.88 ppb
  • SO₂: 0.84 ppb
  • CO: 180.05 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

5 PM
58 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 8.83 µg/m³
  • PM10: 9.18 µg/m³
  • O₃: 58.24 ppb
  • NO₂: 0.97 ppb
  • SO₂: 0.62 ppb
  • CO: 178.28 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

6 PM
61 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 9.01 µg/m³
  • PM10: 9.36 µg/m³
  • O₃: 53.55 ppb
  • NO₂: 1.92 ppb
  • SO₂: 0.61 ppb
  • CO: 187.16 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 PM
59 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 9.17 µg/m³
  • PM10: 9.49 µg/m³
  • O₃: 48.85 ppb
  • NO₂: 2.87 ppb
  • SO₂: 0.61 ppb
  • CO: 196.04 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 PM
54 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 9.84 µg/m³
  • PM10: 10.14 µg/m³
  • O₃: 44.15 ppb
  • NO₂: 3.83 ppb
  • SO₂: 0.60 ppb
  • CO: 204.93 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.19 µg/m³
  • PM10: 10.45 µg/m³
  • O₃: 39.82 ppb
  • NO₂: 4.71 ppb
  • SO₂: 0.62 ppb
  • CO: 218.11 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.33 µg/m³
  • PM10: 10.58 µg/m³
  • O₃: 35.48 ppb
  • NO₂: 5.60 ppb
  • SO₂: 0.64 ppb
  • CO: 231.30 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.83 µg/m³
  • PM10: 11.07 µg/m³
  • O₃: 31.14 ppb
  • NO₂: 6.48 ppb
  • SO₂: 0.66 ppb
  • CO: 244.48 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.