Air Quality in Maryland Heights, United States
Drizzle
19.7°C · 96.0% humidity
19.7°
Feels 19.7°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Maryland Heights's air quality — share it
AQI Forecast
54
8am
54
54
29
11am
30
31
32
2pm
33
33
33
5pm
34
34
54
8pm
54
54
54
11pm
54
54
34
2am
34
34
34
5am
34
54
Air Quality Index Trend
45h · 5 stnMaryland 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.
96.0%
Humidity
44.1 km/h
Wind NE
1018.9 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.05 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Maryland Heights?
Temperature & Precipitation
PM2.5 Trend
45h · 5 stationsPM2.57.05 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX14.9
Extreme
Station readings (3 stations within 25 km)
7.05
Median
7.27
Average
5.5
Low
9.1
High
PM2.5 µg/m³ · Model: 8.2 · Bias: +1.1
What is the 7-day forecast for Maryland Heights?
09-05
27.6° 19.7°
3.31 mm
09-06
38.0° 18.5°
3.38 mm
09-07
29.5° 22.9°
0.06 mm
09-08
25.8° 21.0°
17.69 mm
09-09
25.9° 17.1°
4.0 mm
09-10
31.5° 19.1°
0.69 mm
09-11
38.6° 20.4°
0.13 mm
Both models agree
Avg diff: 6.5°C
Where are air quality stations near Maryland Heights?
39
Ladue, Missouri, USA
27
Forest Park, Missouri, USA
35
Blair Street, Missouri, USA
52
East St. Louis, Illinois, USA
What cities are near Maryland Heights?
Get AQI alerts for Maryland Heights
Notify me when air quality reaches:
Free · No account · Unsubscribe any time
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T16:42 UTC.