What is the air quality in Saint Charles today?

The current Air Quality Index (AQI) in Saint Charles is 26 (Good). PM2.5 concentration is 6.2 µg/m³.

What is the temperature in Saint Charles right now?

The current temperature in Saint Charles is 25.7°C (feels like 25.7°C). Humidity is 58.5% and wind speed is 35.0 km/h.

Is it safe to go outside in Saint Charles?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Saint Charles, United States

Partly Cloudy

25.7°C · 58.5% humidity

25.7°

Feels 25.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

27 6pm

26 9pm

27 12am

25 3am

25 6am

25 9am

24 12pm

25 3pm

Air Quality Index Trend

47h · 28 stn

View full history →

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.

58.5%

Humidity

35.0 km/h

Wind ESE

1013.9 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.2 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Saint Charles?

Temperature & Precipitation

PM2.5 Trend

47h · 28 stations

PM2.56.2 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

6.2

Median

6.2

Average

6.2

Low

6.2

High

PM2.5 µg/m³ · Model: 6.25 · Bias: +0.1

What is the 7-day forecast for Saint Charles?

07-22

31.4° 20.8°

0.06 mm

07-23

27.9° 20.3°

4.94 mm

07-24

27.3° 20.1°

07-25

30.3° 19.8°

2.12 mm

07-26

29.1° 21.4°

3.94 mm

07-27

24.0° 22.5°

0.75 mm

07-28

36.6° 21.7°

3.25 mm

Both models agree Avg diff: 3.0°C

Where are air quality stations near Saint Charles?

Lee District Park - Fairfax County, Northern Virginia, USA

23.8 km PM2.5: 10.8 µg/m³

What cities are near Saint Charles?

26 St. Charles 25 Waldorf 26 Fort Washington 26 Fort Hunt 26 Clinton 26 Hybla Valley 26 Oxon Hill-Glassmanor 26 Camp Springs 26 Oxon Hill 25 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 2026-07-22T01:50 UTC.