Hourly Weather Forecast for Madison, Alabama

Hourly Weather | Today › Tuesday, July 21, 2026

Active Weather Warnings

Heat Advisory

Madison, Alabama

3 AM

75°

Feels Like 84°

Humidity: 95%

UV Index: 0

Wind: 4 mph

4 AM

75°

Feels Like 82°

Humidity: 94%

UV Index: 0

Wind: 4 mph

5 AM

73°

Feels Like 81°

Humidity: 98%

UV Index: 0

Wind: 4 mph

6 AM

75°

Feels Like 82°

Humidity: 94%

UV Index: 0

Wind: 4 mph

7 AM

77°

Feels Like 88°

Humidity: 91%

UV Index: 1

Wind: 4 mph

8 AM

79°

Feels Like 90°

Humidity: 87%

UV Index: 2

Wind: 4 mph

9 AM

82°

Feels Like 93°

Humidity: 79%

UV Index: 3

Wind: 6 mph

10 AM

86°

Feels Like 97°

Humidity: 71%

UV Index: 4

Wind: 7 mph

11 AM

88°

Feels Like 100°

Humidity: 65%

UV Index: 6

Wind: 7 mph

12 PM

90°

Feels Like 104°

Humidity: 61%

UV Index: 7

Wind: 7 mph

1 PM

91°

Feels Like 104°

Humidity: 57%

UV Index: 7

Wind: 7 mph

2 PM

93°

Feels Like 106°

Humidity: 54%

UV Index: 6

Wind: 7 mph

3 PM

93°

Feels Like 104°

Humidity: 51%

UV Index: 5

Wind: 7 mph

4 PM

95°

Feels Like 104°

Humidity: 48%

UV Index: 4

Wind: 8 mph

5 PM

93°

Feels Like 102°

Humidity: 51%

UV Index: 3

Wind: 7 mph

6 PM

93°

Feels Like 100°

Humidity: 54%

UV Index: 2

Wind: 7 mph

7 PM

90°

Feels Like 99°

Humidity: 59%

UV Index: 1

Wind: 6 mph

8 PM

88°

Feels Like 95°

Humidity: 65%

UV Index: 0

Wind: 6 mph

9 PM

84°

Feels Like 93°

Humidity: 71%

UV Index: 0

Wind: 4 mph

10 PM

82°

Feels Like 91°

Humidity: 75%

UV Index: 0

Wind: 4 mph

11 PM

82°

Feels Like 90°

Humidity: 77%

UV Index: 0

Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM

24 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 5.67 µg/m³
PM₁₀: 7.15 µg/m³
O₃: 0.016 ppm
NO₂: 1.9 ppb
SO₂: 0.3 ppb
CO: 0.11 ppm

Health Recommendations:

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

4 AM

18 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.37 µg/m³
PM₁₀: 5.66 µg/m³
O₃: 0.016 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.

5 AM

15 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.25 µg/m³
PM₁₀: 4.35 µg/m³
O₃: 0.016 ppm
NO₂: 1.6 ppb
SO₂: 0.3 ppb
CO: 0.10 ppm

Health Recommendations:

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

6 AM

14 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.68 µg/m³
PM₁₀: 3.71 µg/m³
O₃: 0.015 ppm
NO₂: 1.5 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 AM

14 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.36 µg/m³
PM₁₀: 3.37 µg/m³
O₃: 0.015 ppm
NO₂: 1.6 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 AM

14 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.18 µg/m³
PM₁₀: 3.2 µg/m³
O₃: 0.016 ppm
NO₂: 1.6 ppb
SO₂: 0.3 ppb
CO: 0.10 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: 2.21 µg/m³
PM₁₀: 3.25 µg/m³
O₃: 0.019 ppm
NO₂: 1.5 ppb
SO₂: 0.4 ppb
CO: 0.10 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:

PM_2.5: 2.69 µg/m³
PM₁₀: 3.76 µg/m³
O₃: 0.025 ppm
NO₂: 1.3 ppb
SO₂: 0.6 ppb
CO: 0.10 ppm

Health Recommendations:

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

11 AM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.93 µg/m³
PM₁₀: 3.61 µg/m³
O₃: 0.035 ppm
NO₂: 0.8 ppb
SO₂: 0.9 ppb
CO: 0.09 ppm

Health Recommendations:

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

12 PM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.97 µg/m³
PM₁₀: 3.48 µg/m³
O₃: 0.038 ppm
NO₂: 0.6 ppb
SO₂: 0.9 ppb
CO: 0.09 ppm

Health Recommendations:

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

1 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.11 µg/m³
PM₁₀: 3.59 µg/m³
O₃: 0.039 ppm
NO₂: 0.6 ppb
SO₂: 1 ppb
CO: 0.09 ppm

Health Recommendations:

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

2 PM

37 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.96 µg/m³
PM₁₀: 3.4 µg/m³
O₃: 0.040 ppm
NO₂: 0.7 ppb
SO₂: 1.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

3 PM

37 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.62 µg/m³
PM₁₀: 3.02 µg/m³
O₃: 0.040 ppm
NO₂: 0.8 ppb
SO₂: 1.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

4 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.27 µg/m³
PM₁₀: 2.63 µg/m³
O₃: 0.039 ppm
NO₂: 0.9 ppb
SO₂: 1.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

5 PM

34 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.07 µg/m³
PM₁₀: 2.48 µg/m³
O₃: 0.037 ppm
NO₂: 1.3 ppb
SO₂: 1 ppb
CO: 0.09 ppm

Health Recommendations:

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

6 PM

30 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.04 µg/m³
PM₁₀: 2.56 µg/m³
O₃: 0.033 ppm
NO₂: 2 ppb
SO₂: 1 ppb
CO: 0.10 ppm

Health Recommendations:

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

7 PM

27 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2 µg/m³
PM₁₀: 2.63 µg/m³
O₃: 0.029 ppm
NO₂: 2.5 ppb
SO₂: 0.9 ppb
CO: 0.10 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: 1.93 µg/m³
PM₁₀: 2.66 µg/m³
O₃: 0.026 ppm
NO₂: 2.7 ppb
SO₂: 0.8 ppb
CO: 0.10 ppm

Health Recommendations:

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

9 PM

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.83 µg/m³
PM₁₀: 2.63 µg/m³
O₃: 0.024 ppm
NO₂: 2.7 ppb
SO₂: 0.8 ppb
CO: 0.10 ppm

Health Recommendations:

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

10 PM

21 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.73 µg/m³
PM₁₀: 2.54 µg/m³
O₃: 0.023 ppm
NO₂: 2.5 ppb
SO₂: 0.7 ppb
CO: 0.10 ppm

Health Recommendations:

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

11 PM

20 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.59 µg/m³
PM₁₀: 2.36 µg/m³
O₃: 0.022 ppm
NO₂: 2.3 ppb
SO₂: 0.7 ppb
CO: 0.10 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 Madison

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 8:38PM CDT until July 21 at 8:00PM CDT by NWS Huntsville AL

Jul 20, 8:38 PM → Jul 21, 8:00 PM

WHAT: Heat index values up to 109.

WHERE: Portions of north central, northeast, and northwest
Alabama and southern middle Tennessee.

WHEN: Until 8 PM CDT Tuesday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

+ Read More

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Updated: Jul 21, 1:27 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Madison

Heat Advisory

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