Air Quality in DeKalb, United States
Windy
17.5°C · 59.0% humidity
17.5°
Feels 17.5°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
DeKalb's air quality — share it
AQI Forecast
54
8am
54
34
25
11am
27
34
34
2pm
34
34
34
5pm
34
34
34
8pm
34
34
54
11pm
54
54
54
2am
66
66
66
5am
66
66
Air Quality Index Trend
45h · 5 stnDeKalb's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
59.0%
Humidity
47.9 km/h
Wind NW
1020.7 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for DeKalb?
Temperature & Precipitation
PM2.5 Trend
45h · 5 stationsPM2.56.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX14.9
Extreme
What is the 7-day forecast for DeKalb?
09-05
19.2° 15.9°
0.13 mm
09-06
27.4° 10.7°
0.81 mm
09-07
21.8° 14.9°
1.19 mm
09-08
20.8° 13.2°
12.87 mm
09-09
26.7° 12.7°
0.31 mm
09-10
24.0° 14.8°
0.5 mm
09-11
29.7° 14.2°
0.69 mm
Both models agree
Avg diff: 7.1°C
What cities are near DeKalb?
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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 2026-09-05T16:32 UTC.