What is the air quality in Maryland Heights today?

The current Air Quality Index (AQI) in Maryland Heights is 33 (Good). PM2.5 concentration is 7.87 µg/m³.

What is the temperature in Maryland Heights right now?

The current temperature in Maryland Heights is 29.9°C (feels like 32.7°C). Humidity is 49.1% and wind speed is 48.6 km/h.

Is it safe to go outside in Maryland Heights?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 9.4 (Very High).

Air Quality in Maryland Heights, United States

Windy

29.9°C · 49.1% humidity

29.9°

Feels 32.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

3 stations

Nearby Monitoring Stations

AQI Forecast

54 12pm

33 3pm

34 6pm

27 9pm

27 12am

24 3am

24 6am

25 9am

Air Quality Index Trend

42h · 6 stn

View full history →

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

49.1%

Humidity

48.6 km/h

Wind NE

1012.6 hPa

Pressure

9.4

UV Very High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.87 µg/m³

PM10

20.55 µg/m³

050100150200300500

What is the weather forecast for Maryland Heights?

Temperature & Precipitation

PM2.5 Trend

42h · 6 stations

PM2.57.87 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX9.4

Very High

Station readings (3 stations within 25 km)

7.87

Median

9.53

Average

6.7

Low

14.5

High

PM2.5 µg/m³ · Model: 7.35 · Bias: -0.5

What is the 7-day forecast for Maryland Heights?

07-21

32.0° 24.8°

07-22

28.5° 22.7°

07-23

21.6° 20.4°

0.38 mm

07-24

30.3° 18.9°

0.5 mm

07-25

27.7° 20.1°

4.63 mm

07-26

33.3° 25.0°

0.62 mm

07-27

31.3° 22.7°

Both models agree Avg diff: 3.5°C

Where are air quality stations near Maryland Heights?

Forest Park, Missouri, USA

15.8 km PM2.5: 10.1 µg/m³

East St. Louis, Illinois, USA

25.9 km PM2.5: 10.1 µg/m³

What cities are near Maryland Heights?

33 Creve Coeur 33 Overland 36 Hazelwood 29 Saint Charles 39 Ferguson 30 Clayton 32 University City 40 Florissant 28 Chesterfield 35 Kirkwood

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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 2026-07-21T20:56 UTC.