Today | Weather | Friday, May 22, 2026

Weather in Decatur, Alabama

06:13 AM
Now
Cloudy Weather
68° F
Feels Like 70°
Precipitation 47 %
Wind 6 mph
UV Index (0 - 11+) 0
Humidity 97 %
Today
Sunny with a Chance of Thunderstorms
Day 75°
Night 68°
Precipitation 99 %
Wind 11 mph
UV Index (0 - 11+) 4

Decatur Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 22, 2025)

Day

82°

Night

61°

Air Quality in Decatur

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

Pollutant Concentrations:

PM2.5 3.5 µg/m³
PM10 3.61 µg/m³
O3 0.015 ppm
NO2 0.9 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 0.1 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)
PM2.53.5 µg/m³
PM103.61 µg/m³
O329 µg/m³
NO21.6 µg/m³
SO20.46 µg/m³
CO104.42 µg/m³
NH30.1 µg/m³
NO0 µg/m³