Hourly Weather | Today Friday, March 20, 2026
Decatur, Alabama
3 AM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 77%
UV Index: 0
Wind: 6 mph
4 AM
Cloudy Night
50°
Feels Like 48°
0
Humidity: 77%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
50°
Feels Like 48°
0
Humidity: 79%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 81%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
48°
Feels Like 46°
0
Humidity: 84%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
52°
Feels Like 52°
0
Humidity: 76%
UV Index: 1
Wind: 6 mph
9 AM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 67%
UV Index: 2
Wind: 7 mph
10 AM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 59%
UV Index: 3
Wind: 8 mph
11 AM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 54%
UV Index: 4
Wind: 9 mph
12 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 51%
UV Index: 6
Wind: 11 mph
1 PM
Cloudy Weather
73°
Feels Like 77°
0
Humidity: 47%
UV Index: 6
Wind: 12 mph
2 PM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 44%
UV Index: 6
Wind: 12 mph
3 PM
Cloudy Weather
77°
Feels Like 77°
0
Humidity: 42%
UV Index: 4
Wind: 12 mph
4 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 44%
UV Index: 3
Wind: 12 mph
5 PM
Cloudy Weather
75°
Feels Like 73°
0
Humidity: 46%
UV Index: 2
Wind: 11 mph
6 PM
Cloudy Weather
73°
Feels Like 72°
0
Humidity: 49%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
70°
Feels Like 68°
0
Humidity: 57%
UV Index: 0
Wind: 7 mph
8 PM
Night
68°
Feels Like 64°
0
Humidity: 62%
UV Index: 0
Wind: 7 mph
9 PM
Night
64°
Feels Like 63°
0
Humidity: 67%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 71%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 74%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.94 µg/m³
  • PM10: 11.11 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

4 AM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.68 µg/m³
  • PM10: 10.58 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

5 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.44 µg/m³
  • PM10: 10.19 µg/m³
  • O3: 0.027 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

6 AM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.3 µg/m³
  • PM10: 9.97 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.9 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 AM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.18 µg/m³
  • PM10: 9.84 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

8 AM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.97 µg/m³
  • PM10: 9.63 µg/m³
  • O3: 0.020 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

9 AM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.73 µg/m³
  • PM10: 9.46 µg/m³
  • O3: 0.019 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 AM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.61 µg/m³
  • PM10: 9.47 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.72 µg/m³
  • PM10: 9.8 µg/m³
  • O3: 0.038 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.04 µg/m³
  • PM10: 10.15 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.47 µg/m³
  • PM10: 10.62 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.37 µg/m³
  • PM10: 9.5 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 5.88 µg/m³
  • PM10: 8.95 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.85 µg/m³
  • PM10: 8.95 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.98 µg/m³
  • PM10: 9.22 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.06 µg/m³
  • PM10: 9.4 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.99 µg/m³
  • PM10: 9.36 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.78 µg/m³
  • PM10: 9.11 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.54 µg/m³
  • PM10: 8.83 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.32 µg/m³
  • PM10: 8.58 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 8.4 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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