What is the air quality in Decatur today?

The current Air Quality Index (AQI) in Decatur is 55 (Moderate). PM2.5 concentration is 14.0 µg/m³.

What is the temperature in Decatur right now?

The current temperature in Decatur is 30.2°C (feels like 32.5°C). Humidity is 44.5% and wind speed is 30.4 km/h.

Air Quality in Decatur, United States

Clear

30.2°C · 44.5% humidity

30.2°

Feels 32.5°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

1 station

Nearby Monitoring Stations

AQI Forecast

27 3pm

55 6pm

35 9pm

29 12am

26 3am

26 6am

25 9am

25 12pm

Air Quality Index Trend

48h · 1 stn

View full history →

Decatur's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

44.5%

Humidity

30.4 km/h

Wind ESE

1010.0 hPa

Pressure

4.4

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

14.0 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Decatur?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station

PM2.514.0 µg/m³ ✓ WHO

Moderate

PM1013.7 µg/m³

Good

UV INDEX4.4

Moderate

Station readings (1 station within 25 km)

14.0

Median

14.0

Average

14.0

Low

14.0

High

PM2.5 µg/m³ · Model: 7.35 · Bias: -6.7

What is the 7-day forecast for Decatur?

07-21

32.8° 24.7°

0.38 mm

07-22

34.3° 21.3°

2.19 mm

07-23

36.6° 22.4°

5.38 mm

07-24

30.0° 20.7°

3.38 mm

07-25

29.2° 20.2°

3.44 mm

07-26

38.2° 21.9°

7.37 mm

07-27

31.1° 19.9°

4.31 mm

Both models agree Avg diff: 3.8°C

Where are air quality stations near Decatur?

united-states-of-america-atlanta-park-drive-ne

6.3 km PM2.5: 1.0 µg/m³

United Ave., Georgia, USA

8.3 km PM2.5: 9.6 µg/m³

Gwinnett Tech, Georgia, USA

29.5 km PM2.5: 24.0 µg/m³

Gwinnett Tech, Georgia, USA

29.5 km PM2.5: 33.0 µg/m³

What cities are near Decatur?

55 North Decatur 55 Belvedere Park 45 North Druid Hills 55 Candler-McAfee 55 Atlanta 35 Brookhaven 35 Tucker 26 Chamblee 55 Redan 55 Stonecrest

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T22:04 UTC.