Today | Weather | Thursday, December 4, 2025

Weather in Decatur, Alabama

04:05 AM
Now
Cloudy Night
30° F
Feels Like 28°
Precipitation 0 %
Wind 4 mph
Humidity 100 %
Today
Rainy Weather
Day 45°
Night 39°
Precipitation 59 %
Wind 7 mph
UV Index (0 - 11+) 1

Decatur Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 4, 2024)

Day

54°

Night

21°

Air Quality in Decatur

NOW
53 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 13.32 µg/m³
PM10 17.11 µg/m³
O3 0.009 ppm
NO2 12 ppb
SO2 0.2 ppb
CO 0.26 ppm
NH3 0.38 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.513.32 µg/m³
PM1017.11 µg/m³
O318.39 µg/m³
NO222.53 µg/m³
SO20.46 µg/m³
CO300.14 µg/m³
NH30.38 µg/m³
NO0 µg/m³