Air Quality in Maryland Heights, United States

Drizzle
15.4°C · 81.6% humidity
15.4°
Feels 15.4°
36
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
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Air Quality Index Trend

42h · 2 stn

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.

81.6%
Humidity
30.1 km/h
Wind E
1019.9 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
36
8.57 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Maryland Heights?

Temperature & Precipitation

PM2.5 Trend

42h · 2 stations
PM2.58.57 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.0
Low
Station readings (2 stations within 25 km)
8.57
Median
9.1
Average
7.4
Low
10.8
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +4.9

What is the 7-day forecast for Maryland Heights?

10-20
15.6° 4.4°
10-21
24.8° 15.0°
6.94 mm
10-22
21.9° 11.4°
2.38 mm
10-23
14.4° 11.6°
9.88 mm
10-24
27.6° 14.0°
10-25
18.6° 4.3°
10-26
25.7° 6.0°
0.06 mm
Both models agree Avg diff: 4.5°C

Where are air quality stations near Maryland Heights?

29
Forest Park, Missouri, USA
15.8 km PM2.5: 7.0 µg/m³
52
Branch Street, Missouri, USA
21.8 km PM2.5: 12.6 µg/m³
42
East St. Louis, Illinois, USA
25.9 km PM2.5: 10.1 µg/m³

What cities are near Maryland Heights?

36 Creve Coeur 36 Overland 37 Hazelwood 31 Saint Charles 38 Ferguson 33 Clayton 33 University City 39 Florissant 32 Chesterfield 36 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 2026-10-20T21:46 UTC.