What is the air quality in St. Charles today?

The current Air Quality Index (AQI) in St. Charles is 32 (Good). PM2.5 concentration is 7.55 µg/m³.

What is the temperature in St. Charles right now?

The current temperature in St. Charles is 16.5°C (feels like 16.5°C). Humidity is 90.4% and wind speed is 100.5 km/h.

Is it safe to go outside in St. Charles?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0 (Low).

Air Quality in St. Charles, United States

Windy

16.5°C · 90.4% humidity

16.5°

Feels 16.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

32 9pm

— 12am

—

— 3am

—

— 6am

—

— 9am

—

— 12pm

—

— 3pm

—

— 6pm

—

Station readings

PM2.5 Trend (24h)

24h · 100 stations

90.4%

Humidity

100.5 km/h

Wind SSW

1016.1 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for St. Charles?

Temperature & Precipitation

PM2.57.55 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

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

04-10

16.5° 6.4°

11.87 mm

04-11

9.1° 3.4°

19.38 mm

04-12

17.1° 8.7°

1.56 mm

04-13

24.1° 16.3°

0.94 mm

04-14

23.3° 15.4°

18.12 mm

04-15

12.7° 3.0°

0.19 mm

04-16

11.6° 3.1°

0.06 mm

Both models agree Avg diff: 6.4°C

Where are air quality stations near St. Charles?

Naperville, Illinois, USA

20.5 km

Naperville, Illinois, USA

20.5 km

What cities are near St. Charles?

31 Geneva 31 Batavia 31 Wasco 32 South Elgin 32 West Chicago 31 North Aurora 32 Bartlett 32 Elgin 33 Carol Stream 32 Streamwood

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-10T00:31 UTC.