Air Quality in St. Charles, United States

Drizzle
21.1°C · 89.7% humidity
21.1°
Feels 21.1°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
25 8pm
27
27
33 11pm
29
28
27 2am
27
26
26 5am
26
25
25 8am
27
27
27 11am
25
25
25 2pm
25
25
27 5pm
27
27
AD 728×90

Air Quality Index Trend

46h · 29 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.

89.7%
Humidity
23.0 km/h
Wind SW
1012.9 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
33
7.97 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for St. Charles?

Temperature & Precipitation

PM2.5 Trend

46h · 29 stations
PM2.57.97 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250

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

08-03
23.6° 20.0°
4.75 mm
08-04
38.5° 23.3°
08-05
36.3° 21.3°
0.69 mm
08-06
30.8° 21.5°
08-07
34.1° 21.0°
2.25 mm
08-08
37.9° 21.6°
2.0 mm
08-09
35.3° 21.7°
2.81 mm
Both models agree Avg diff: 3.5°C

Where are air quality stations near St. Charles?

15
Lee District Park - Fairfax County, Northern Virginia, USA
24.2 km PM2.5: 3.6 µg/m³

What cities are near St. Charles?

33 Saint Charles 26 Waldorf 26 Fort Washington 30 Clinton 26 Fort Hunt 26 Hybla Valley 26 Oxon Hill-Glassmanor 26 Camp Springs 26 Oxon Hill 26 Glassmanor
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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 2026-08-08T03:52 UTC.