What is the air quality in DeKalb today?

The current Air Quality Index (AQI) in DeKalb is 31 (Good). PM2.5 concentration is 7.46 µg/m³.

What is the temperature in DeKalb right now?

The current temperature in DeKalb is 8.1°C (feels like 1.1°C). Humidity is 54.0% and wind speed is 96.8 km/h.

Is it safe to go outside in DeKalb?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in DeKalb, United States

Windy

8.1°C · 54.0% humidity

8.1°

Feels 1.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

42h · 2 stn

View full history →

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

54.0%

Humidity

96.8 km/h

Wind NE

1027.9 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.46 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for DeKalb?

Temperature & Precipitation

PM2.5 Trend

42h · 2 stations

PM2.57.46 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for DeKalb?

10-20

8.5° 2.2°

0.06 mm

10-21

21.4° 10.8°

2.5 mm

10-22

13.9° 6.3°

0.19 mm

10-23

11.0° 7.2°

0.62 mm

10-24

21.0° 7.2°

10-25

13.8° 0.7°

0.81 mm

10-26

17.9° 1.8°

3.44 mm

Both models agree Avg diff: 5.3°C

What cities are near DeKalb?

30 Sycamore 31 Wasco 40 St. Charles 40 Geneva 40 Batavia 29 Huntley 40 North Aurora 28 Belvidere 46 South Elgin 40 Montgomery

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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 2026-10-20T20:56 UTC.