Air Quality in St. Charles, United States

Cloudy
10.6°C · 78.0% humidity
10.6°
Feels 10.6°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
24 12am
24
24
17 3am
19
20
21 6am
22
23
23 9am
23
24
24 12pm
24
24
24 3pm
24
24
24 6pm
24
25
27 9pm
34
34
AD 728×90

Air Quality Index Trend

46h · 6 stn

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

78.0%
Humidity
36.8 km/h
Wind NW
1012.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
17
4.1 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for St. Charles?

Temperature & Precipitation

PM2.5 Trend

46h · 6 stations
PM2.54.1 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
4.1
Median
4.1
Average
4.1
Low
4.1
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +2.0

What is the 7-day forecast for St. Charles?

06-09
30.8° 10.6°
0.56 mm
06-10
21.8° 19.8°
20.06 mm
06-11
24.5° 14.7°
0.88 mm
06-12
28.7° 20.0°
5.56 mm
06-13
27.5° 22.2°
4.94 mm
06-14
30.7° 14.6°
06-15
32.3° 23.5°
0.06 mm
Both models agree Avg diff: 5.9°C

Where are air quality stations near St. Charles?

17
Naperville, Illinois, USA
20.5 km PM2.5: 4.1 µg/m³
42
Naperville, Illinois, USA
20.5 km PM2.5: 10.1 µg/m³
10
Naperville, Illinois, USA
20.5 km PM2.5: 2.4 µg/m³
13
Naperville, Illinois, USA
20.5 km PM2.5: 3.1 µg/m³

What cities are near St. Charles?

17 Geneva 17 Batavia 30 Wasco 31 South Elgin 17 West Chicago 17 North Aurora 17 Bartlett 24 Elgin 17 Carol Stream 24 Streamwood
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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 2026-06-09T08:04 UTC.