Today | Weather | Wednesday, March 18, 2026
Active Weather Warnings

Weather in Madison, Alabama

07:20 AM
Now
Cloudy Weather
34° F
Feels Like 34°
Precipitation 1 %
Wind 4 mph
UV Index (0 - 11+) 0
Humidity 64 %
Today
Cloudy Weather
Day 57°
Night 37°
Precipitation 5 %
Wind 8 mph
UV Index (0 - 11+) 2

Madison Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)

Day

75°

Night

39°

Air Quality in Madison

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.84 µg/m³
PM10 9.78 µg/m³
O3 0.028 ppm
NO2 4.3 ppb
SO2 0.2 ppb
CO 0.19 ppm
NH3 1.56 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.55.84 µg/m³
PM109.78 µg/m³
O355.59 µg/m³
NO28.07 µg/m³
SO20.57 µg/m³
CO212.62 µg/m³
NH31.56 µg/m³
NO0 µg/m³

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, 5:32 AM Source: NWS Alert