Air Quality in Maryland Heights, United States

Partly Cloudy
16.5°C · 69.7% humidity
16.5°
Feels 16.5°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
27 7pm
34
34
22 10pm
25
28
23 1am
24
25
25 4am
26
26
26 7am
25
25
25 10am
25
25
25 1pm
27
27
27 4pm
27
27
AD 728×90

Air Quality Index Trend

47h · 6 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.

69.7%
Humidity
20.5 km/h
Wind WNW
1014.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
22
5.22 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Maryland Heights?

Temperature & Precipitation

PM2.5 Trend

47h · 6 stations
PM2.55.22 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
5.22
Median
6.4
Average
4.3
Low
9.6
High
PM2.5 µg/m³ · Model: 7.0 · Bias: +1.8

What is the 7-day forecast for Maryland Heights?

06-09
33.7° 16.5°
4.94 mm
06-10
30.5° 22.1°
51.0 mm
06-11
29.0° 20.6°
06-12
32.1° 20.9°
0.44 mm
06-13
28.2° 24.4°
0.56 mm
06-14
33.3° 17.4°
10.19 mm
06-15
33.7° 25.0°
0.25 mm
Both models agree Avg diff: 3.9°C

Where are air quality stations near Maryland Heights?

62
Forest Park, Missouri, USA
15.8 km PM2.5: 17.3 µg/m³
36
East St. Louis, Illinois, USA
25.9 km PM2.5: 8.6 µg/m³

What cities are near Maryland Heights?

21 Creve Coeur 22 Overland 24 Hazelwood 20 Saint Charles 27 Ferguson 20 Clayton 22 University City 27 Florissant 18 Chesterfield 23 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 2026-06-09T03:15 UTC.