Hourly Weather | Today Wednesday, October 22, 2025
Chattanooga, Tennessee
1 AM
Night
48°
Feels Like 48°
0
Humidity: 70%
Wind: 5 mph
UV Index: 0
2 AM
Night
46°
Feels Like 46°
0
Humidity: 75%
Wind: 5 mph
UV Index: 0
3 AM
Night
46°
Feels Like 45°
0
Humidity: 78%
Wind: 5 mph
UV Index: 0
4 AM
Night
45°
Feels Like 45°
0
Humidity: 79%
Wind: 5 mph
UV Index: 0
5 AM
Night
45°
Feels Like 45°
0
Humidity: 81%
Wind: 5 mph
UV Index: 0
6 AM
Night
45°
Feels Like 45°
0
Humidity: 84%
Wind: 5 mph
UV Index: 0
7 AM
Cloudy Night
43°
Feels Like 45°
0
Humidity: 87%
Wind: 1 mph
UV Index: 0
8 AM
Cloudy Weather
41°
Feels Like 45°
0
Humidity: 93%
Wind: 1 mph
UV Index: 4
9 AM
Cloudy Weather
45°
Feels Like 52°
0
Humidity: 85%
Wind: 1 mph
UV Index: 13
10 AM
Cloudy Weather
50°
Feels Like 59°
0
Humidity: 69%
Wind: 0 mph
UV Index: 22
11 AM
Cloudy Weather
59°
Feels Like 68°
0
Humidity: 51%
Wind: 1 mph
UV Index: 31
12 PM
Cloudy Weather
63°
Feels Like 72°
0
Humidity: 44%
Wind: 1 mph
UV Index: 38
1 PM
Cloudy Weather
66°
Feels Like 73°
0
Humidity: 39%
Wind: 2 mph
UV Index: 41
2 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 36%
Wind: 4 mph
UV Index: 38
3 PM
Cloudy Weather
72°
Feels Like 75°
0
Humidity: 34%
Wind: 5 mph
UV Index: 31
4 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 33%
Wind: 5 mph
UV Index: 22
5 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 37%
Wind: 5 mph
UV Index: 13
6 PM
Cloudy Weather
70°
Feels Like 68°
0
Humidity: 41%
Wind: 4 mph
UV Index: 4
7 PM
Cloudy Night
64°
Feels Like 64°
0
Humidity: 48%
Wind: 2 mph
UV Index: 0
8 PM
Night
61°
Feels Like 63°
0
Humidity: 57%
Wind: 2 mph
UV Index: 0
9 PM
Night
59°
Feels Like 61°
0
Humidity: 64%
Wind: 1 mph
UV Index: 0
10 PM
Night
55°
Feels Like 57°
0
Humidity: 70%
Wind: 1 mph
UV Index: 0
11 PM
Night
54°
Feels Like 55°
0
Humidity: 77%
Wind: 1 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.98 µg/m³
  • PM10: 4.3 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

2 AM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.38 µg/m³
  • PM10: 3.64 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.94 µg/m³
  • PM10: 3.17 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

4 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.69 µg/m³
  • PM10: 2.92 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.53 µg/m³
  • PM10: 2.78 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.44 µg/m³
  • PM10: 2.73 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.41 µg/m³
  • PM10: 2.83 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.44 µg/m³
  • PM10: 3.04 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.46 µg/m³
  • PM10: 3.21 µg/m³
  • O3: 0.026 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 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.46 µg/m³
  • PM10: 3.22 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.2 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 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.48 µg/m³
  • PM10: 3.03 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.36 µg/m³
  • PM10: 2.21 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.4 µg/m³
  • PM10: 2.12 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.55 µg/m³
  • PM10: 2.23 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.65 µg/m³
  • PM10: 2.3 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.74 µg/m³
  • PM10: 2.39 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.83 µg/m³
  • PM10: 2.48 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.93 µg/m³
  • PM10: 2.73 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.04 µg/m³
  • PM10: 3.12 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.12 µg/m³
  • PM10: 3.48 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.13 µg/m³
  • PM10: 3.7 µg/m³
  • O3: 0.034 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.

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

Pollutant Concentrations:

  • PM2.5: 2.12 µg/m³
  • PM10: 3.83 µg/m³
  • O3: 0.032 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.

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

Pollutant Concentrations:

  • PM2.5: 2.08 µg/m³
  • PM10: 3.88 µg/m³
  • O3: 0.031 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.