Hourly Weather Forecast for Decatur, Alabama

Hourly Weather | Today › Thursday, July 23, 2026

Active Weather Warnings

Flood Watch

Decatur, Alabama

7 AM

75°

Feels Like 79°

Humidity: 90%

UV Index: 0

Wind: 6 mph

8 AM

75°

Feels Like 79°

Humidity: 92%

UV Index: 1

Wind: 6 mph

9 AM

75°

Feels Like 84°

Humidity: 91%

UV Index: 1

Wind: 6 mph

10 AM

77°

Feels Like 84°

Humidity: 88%

UV Index: 2

Wind: 7 mph

11 AM

77°

Feels Like 88°

Humidity: 85%

UV Index: 3

Wind: 7 mph

12 PM

79°

Feels Like 90°

Humidity: 81%

UV Index: 5

Wind: 7 mph

1 PM

81°

Feels Like 91°

Humidity: 77%

UV Index: 5

Wind: 7 mph

2 PM

82°

Feels Like 90°

Humidity: 77%

UV Index: 4

Wind: 7 mph

3 PM

84°

Feels Like 93°

Humidity: 71%

UV Index: 4

Wind: 7 mph

4 PM

84°

Feels Like 93°

Humidity: 68%

UV Index: 2

Wind: 8 mph

5 PM

84°

Feels Like 91°

Humidity: 70%

UV Index: 2

Wind: 7 mph

6 PM

82°

Feels Like 90°

Humidity: 73%

UV Index: 1

Wind: 7 mph

7 PM

82°

Feels Like 88°

Humidity: 75%

UV Index: 1

Wind: 7 mph

8 PM

81°

Feels Like 86°

Humidity: 79%

UV Index: 0

Wind: 7 mph

9 PM

79°

Feels Like 84°

Humidity: 81%

UV Index: 0

Wind: 6 mph

10 PM

77°

Feels Like 81°

Humidity: 87%

UV Index: 0

Wind: 6 mph

11 PM

75°

Feels Like 81°

Humidity: 88%

UV Index: 0

Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM

13 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 3.18 µg/m³
PM₁₀: 6.72 µg/m³
O₃: 0.011 ppm
NO₂: 0.8 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

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

8 AM

15 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 3.49 µg/m³
PM₁₀: 8.65 µg/m³
O₃: 0.016 ppm
NO₂: 0.7 ppb
SO₂: 0.3 ppb
CO: 0.07 ppm

Health Recommendations:

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

9 AM

17 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.55 µg/m³
PM₁₀: 9.13 µg/m³
O₃: 0.018 ppm
NO₂: 0.6 ppb
SO₂: 0.3 ppb
CO: 0.07 ppm

Health Recommendations:

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

10 AM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.55 µg/m³
PM₁₀: 9.1 µg/m³
O₃: 0.020 ppm
NO₂: 0.6 ppb
SO₂: 0.3 ppb
CO: 0.07 ppm

Health Recommendations:

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

11 AM

21 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.43 µg/m³
PM₁₀: 8.73 µg/m³
O₃: 0.022 ppm
NO₂: 0.5 ppb
SO₂: 0.3 ppb
CO: 0.07 ppm

Health Recommendations:

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

12 PM

23 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.13 µg/m³
PM₁₀: 7.66 µg/m³
O₃: 0.025 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

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

1 PM

25 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.92 µg/m³
PM₁₀: 6.76 µg/m³
O₃: 0.027 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

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

2 PM

28 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.65 µg/m³
PM₁₀: 5.8 µg/m³
O₃: 0.030 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

3 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.37 µg/m³
PM₁₀: 4.74 µg/m³
O₃: 0.031 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

4 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.22 µg/m³
PM₁₀: 4.12 µg/m³
O₃: 0.032 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

5 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.17 µg/m³
PM₁₀: 3.73 µg/m³
O₃: 0.032 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

6 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.19 µg/m³
PM₁₀: 3.56 µg/m³
O₃: 0.032 ppm
NO₂: 0.5 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

7 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.2 µg/m³
PM₁₀: 3.45 µg/m³
O₃: 0.032 ppm
NO₂: 0.5 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

8 PM

24 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.23 µg/m³
PM₁₀: 3.38 µg/m³
O₃: 0.026 ppm
NO₂: 0.8 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

9 PM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.33 µg/m³
PM₁₀: 3.48 µg/m³
O₃: 0.019 ppm
NO₂: 1.1 ppb
SO₂: 0.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

10 PM

13 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.43 µg/m³
PM₁₀: 3.57 µg/m³
O₃: 0.015 ppm
NO₂: 1.2 ppb
SO₂: 0.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

11 PM

10 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 2.51 µg/m³
PM₁₀: 3.63 µg/m³
O₃: 0.011 ppm
NO₂: 1.3 ppb
SO₂: 0.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Decatur

Severe Future Possible

Flood Watch

Flood Watch issued July 23 at 1:25AM CDT until July 24 at 7:00PM CDT by NWS Huntsville AL

Jul 23, 1:25 AM → Jul 24, 7:00 PM

WHAT: Flash flooding caused by excessive rainfall.

WHERE: Portions of Alabama, including the following areas,
Cullman, DeKalb, Jackson, Madison, Marshall and Morgan and
southern middle Tennessee, including the following areas, Franklin
TN, Lincoln and Moore.

WHEN: Through 7 PM Friday evening.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas.

ADDITIONAL DETAILS:
- Repeated rounds of showers and thunderstorms along a stalled
frontal boundary may result in locally heavy rainfall and
flash flooding late this week.
- http://www.weather.gov/safety/flood

+ Read More

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Updated: Jul 23, 6:26 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Decatur

Flood Watch

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