Hourly Weather Forecast for Madison, Alabama

Hourly Weather | Today › Wednesday, March 18, 2026

Active Weather Warnings

Freeze Warning

Madison, Alabama

9 AM

41°

Feels Like 39°

Humidity: 45%

UV Index: 1

Wind: 6 mph

10 AM

45°

Feels Like 43°

Humidity: 40%

UV Index: 1

Wind: 6 mph

11 AM

46°

Feels Like 46°

Humidity: 38%

UV Index: 1

Wind: 7 mph

12 PM

50°

Feels Like 48°

Humidity: 36%

UV Index: 2

Wind: 8 mph

1 PM

52°

Feels Like 48°

Humidity: 36%

UV Index: 2

Wind: 9 mph

2 PM

54°

Feels Like 52°

Humidity: 35%

UV Index: 2

Wind: 9 mph

3 PM

54°

Feels Like 54°

Humidity: 34%

UV Index: 2

Wind: 9 mph

4 PM

55°

Feels Like 54°

Humidity: 34%

UV Index: 2

Wind: 9 mph

5 PM

57°

Feels Like 55°

Humidity: 32%

UV Index: 1

Wind: 8 mph

6 PM

55°

Feels Like 52°

Humidity: 35%

UV Index: 1

Wind: 7 mph

7 PM

52°

Feels Like 50°

Humidity: 39%

UV Index: 0

Wind: 7 mph

8 PM

50°

Feels Like 48°

Humidity: 45%

UV Index: 0

Wind: 6 mph

9 PM

46°

Feels Like 46°

Humidity: 51%

UV Index: 0

Wind: 4 mph

10 PM

45°

Feels Like 45°

Humidity: 57%

UV Index: 0

Wind: 4 mph

11 PM

43°

Feels Like 43°

Humidity: 60%

UV Index: 0

Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.59 µg/m³
PM₁₀: 9.03 µg/m³
O₃: 0.039 ppm
NO₂: 4.6 ppb
SO₂: 0.6 ppb
CO: 0.17 ppm

Health Recommendations:

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

10 AM

38 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.08 µg/m³
PM₁₀: 8.34 µg/m³
O₃: 0.041 ppm
NO₂: 4.5 ppb
SO₂: 0.7 ppb
CO: 0.17 ppm

Health Recommendations:

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

11 AM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.9 µg/m³
PM₁₀: 6.11 µg/m³
O₃: 0.049 ppm
NO₂: 2.9 ppb
SO₂: 1.2 ppb
CO: 0.15 ppm

Health Recommendations:

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

12 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.06 µg/m³
PM₁₀: 4.84 µg/m³
O₃: 0.052 ppm
NO₂: 2.3 ppb
SO₂: 1.3 ppb
CO: 0.14 ppm

Health Recommendations:

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

1 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.92 µg/m³
PM₁₀: 4.53 µg/m³
O₃: 0.053 ppm
NO₂: 2 ppb
SO₂: 1.4 ppb
CO: 0.13 ppm

Health Recommendations:

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

2 PM

58 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.74 µg/m³
PM₁₀: 4.06 µg/m³
O₃: 0.057 ppm
NO₂: 1.3 ppb
SO₂: 1.1 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

63 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.68 µg/m³
PM₁₀: 3.83 µg/m³
O₃: 0.058 ppm
NO₂: 1 ppb
SO₂: 0.9 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

63 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.73 µg/m³
PM₁₀: 3.83 µg/m³
O₃: 0.058 ppm
NO₂: 0.9 ppb
SO₂: 0.9 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.

5 PM

60 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.88 µg/m³
PM₁₀: 4.09 µg/m³
O₃: 0.057 ppm
NO₂: 1.1 ppb
SO₂: 0.9 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.

6 PM

51 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.05 µg/m³
PM₁₀: 4.46 µg/m³
O₃: 0.054 ppm
NO₂: 1.7 ppb
SO₂: 0.8 ppb
CO: 0.14 ppm

Health Recommendations:

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

7 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.16 µg/m³
PM₁₀: 4.72 µg/m³
O₃: 0.052 ppm
NO₂: 2.4 ppb
SO₂: 0.8 ppb
CO: 0.14 ppm

Health Recommendations:

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

8 PM

47 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.26 µg/m³
PM₁₀: 4.95 µg/m³
O₃: 0.050 ppm
NO₂: 2.6 ppb
SO₂: 0.7 ppb
CO: 0.15 ppm

Health Recommendations:

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

9 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.41 µg/m³
PM₁₀: 5.21 µg/m³
O₃: 0.050 ppm
NO₂: 2.5 ppb
SO₂: 0.7 ppb
CO: 0.15 ppm

Health Recommendations:

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

10 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.56 µg/m³
PM₁₀: 5.41 µg/m³
O₃: 0.050 ppm
NO₂: 2.3 ppb
SO₂: 0.6 ppb
CO: 0.15 ppm

Health Recommendations:

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

11 PM

45 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.68 µg/m³
PM₁₀: 5.53 µg/m³
O₃: 0.048 ppm
NO₂: 2.1 ppb
SO₂: 0.6 ppb
CO: 0.15 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

Freeze Warning

Freeze Warning issued March 17 at 2:41PM CDT until March 18 at 9:00AM CDT by NWS Huntsville AL

Mar 17, 9:00 PM → Mar 18, 9:00 AM

WHAT: Sub-freezing temperatures as low as 27 expected.

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

WHEN: From 9 PM this evening to 9 AM CDT Wednesday.

IMPACTS: Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

+ Read More

Take steps now to protect tender plants from the cold.

Updated: Mar 18, 7:23 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Madison

Freeze Warning

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