Air Quality in Saint 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
27 11pm
25
25
33 2am
31
29
28 5am
27
27
26 8am
28
28
27 11am
25
25
25 2pm
25
25
27 5pm
27
27
54 8pm
54
54
AD 728×90

Air Quality Index Trend

45h · 31 stn

Saint 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
7.96 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint Charles?

Temperature & Precipitation

PM2.5 Trend

45h · 31 stations
PM2.57.96 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250

What is the 7-day forecast for Saint 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 Saint Charles?

16
Lee District Park - Fairfax County, Northern Virginia, USA
23.8 km PM2.5: 3.8 µg/m³
19
Lee District Park - Fairfax County, Northern Virginia, USA
23.8 km PM2.5: 4.6 µg/m³

What cities are near Saint Charles?

33 St. Charles 26 Waldorf 26 Fort Washington 26 Fort Hunt 30 Clinton 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 2026-08-08T06:33 UTC.