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Active Weather Warnings

Weather in Decatur, Alabama

05:32 AM
Now
Cloudy Weather
77° F
Feels Like 81°
Precipitation 47 %
Wind 6 mph
UV Index (0 - 11+) 0
Humidity 89 %
Today
Sunny with a Chance of Thunderstorms
Day 82°
Night 73°
Precipitation 55 %
Wind 7 mph
UV Index (0 - 11+) 5

Decatur Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (July 23, 2025)

Day

93°

Night

73°

Air Quality in Decatur

NOW
12 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 2.9 µg/m³
PM10 5.53 µg/m³
O3 0.010 ppm
NO2 0.7 ppb
SO2 0.1 ppb
CO 0.07 ppm
NH3 0.31 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)
PM2.52.9 µg/m³
PM105.53 µg/m³
O320.23 µg/m³
NO21.36 µg/m³
SO20.32 µg/m³
CO80.79 µg/m³
NH30.31 µg/m³
NO0 µg/m³

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, 1:55 AM Source: NWS Alert