Hourly Weather | Today Tuesday, March 17, 2026
Chattanooga, Tennessee
2 AM
Cloudy Night
32°
Feels Like 25°
0
Humidity: 56%
UV Index: 0
Wind: 9 mph
3 AM
Cloudy Night
30°
Feels Like 25°
0
Humidity: 55%
UV Index: 0
Wind: 8 mph
4 AM
Cloudy Night
30°
Feels Like 25°
0
Humidity: 56%
UV Index: 0
Wind: 8 mph
5 AM
Cloudy Night
30°
Feels Like 25°
0
Humidity: 57%
UV Index: 0
Wind: 7 mph
6 AM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 59%
UV Index: 0
Wind: 7 mph
7 AM
Cloudy Night
28°
Feels Like 23°
0
Humidity: 60%
UV Index: 0
Wind: 7 mph
8 AM
Cloudy Weather
28°
Feels Like 25°
0
Humidity: 61%
UV Index: 1
Wind: 7 mph
9 AM
Cloudy Weather
28°
Feels Like 27°
0
Humidity: 57%
UV Index: 2
Wind: 8 mph
10 AM
Cloudy Weather
32°
Feels Like 28°
0
Humidity: 50%
UV Index: 3
Wind: 9 mph
11 AM
Cloudy Weather
36°
Feels Like 34°
0
Humidity: 43%
UV Index: 4
Wind: 10 mph
12 PM
Cloudy Weather
37°
Feels Like 37°
0
Humidity: 37%
UV Index: 5
Wind: 10 mph
1 PM
Cloudy Weather
39°
Feels Like 39°
0
Humidity: 31%
UV Index: 6
Wind: 12 mph
2 PM
Cloudy Weather
43°
Feels Like 43°
0
Humidity: 27%
UV Index: 5
Wind: 12 mph
3 PM
Cloudy Weather
45°
Feels Like 43°
0
Humidity: 25%
UV Index: 4
Wind: 12 mph
4 PM
Cloudy Weather
46°
Feels Like 43°
0
Humidity: 23%
UV Index: 3
Wind: 12 mph
5 PM
Cloudy Weather
46°
Feels Like 43°
0
Humidity: 22%
UV Index: 2
Wind: 10 mph
6 PM
Cloudy Weather
45°
Feels Like 41°
0
Humidity: 23%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
45°
Feels Like 39°
0
Humidity: 25%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
41°
Feels Like 37°
0
Humidity: 28%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 31%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
37°
Feels Like 37°
0
Humidity: 36%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
36°
Feels Like 37°
0
Humidity: 40%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 1.52 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 1.88 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 2.51 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.54 µg/m³
  • PM10: 3.17 µg/m³
  • O3: 0.047 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.63 µg/m³
  • PM10: 3.7 µg/m³
  • O3: 0.046 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 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: 0.72 µg/m³
  • PM10: 3.95 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.82 µg/m³
  • PM10: 3.91 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.89 µg/m³
  • PM10: 3.33 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.95 µg/m³
  • PM10: 2.98 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.16 µg/m³
  • PM10: 2.82 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.41 µg/m³
  • PM10: 2.61 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.75 µg/m³
  • PM10: 2.84 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

2 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.11 µg/m³
  • PM10: 3.2 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
61 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.39 µg/m³
  • PM10: 3.51 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.45 µg/m³
  • PM10: 3.58 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.33 µg/m³
  • PM10: 3.46 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
64 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.42 µg/m³
  • PM10: 4.01 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
56 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.67 µg/m³
  • PM10: 5.16 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 2.79 µg/m³
  • PM10: 6.15 µg/m³
  • O3: 0.053 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.9 µg/m³
  • PM10: 7.92 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.14 µg/m³
  • PM10: 10.6 µg/m³
  • O3: 0.043 ppm
  • NO2: 3.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.44 µg/m³
  • PM10: 13.17 µg/m³
  • O3: 0.039 ppm
  • NO2: 4.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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