Air Quality in Lemay, United States

Windy
25.5°C · 49.6% humidity
25.5°
Feels 25.5°
49
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
49 6pm
49
49
49 9pm
49
49
49 12am
49
49
49 3am
49
49
49 6am
49
49
49 9am
49
49
49 12pm
49
49
49 3pm
49
49
Station readings 48h ago
AQI 29
PM2.5 6.9 µg/m³ · 48h ago
AD 728×90

Air Quality Index Trend

38h · 8 stn

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

49.6%
Humidity
59.7 km/h
Wind NE
1017.5 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
49
11.78 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Lemay?

Temperature & Precipitation

PM2.5 Trend

38h · 8 stations
PM2.511.78 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (3 stations within 25 km)
11.78
Median
11.7
Average
9.6
Low
13.5
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -0.9

What is the 7-day forecast for Lemay?

08-03
32.3° 19.9°
08-04
33.7° 20.1°
08-05
35.0° 14.7°
25.06 mm
08-06
39.6° 21.1°
6.25 mm
08-07
33.3° 20.3°
08-08
37.8° 26.0°
0.56 mm
08-09
38.3° 26.4°
0.13 mm
Both models agree Avg diff: 3.2°C

Where are air quality stations near Lemay?

36
Forest Park, Missouri, USA
10.9 km PM2.5: 8.6 µg/m³
36
East St. Louis, Illinois, USA
13.5 km PM2.5: 8.6 µg/m³
35
Arnold West, Missouri, USA
14.0 km PM2.5: 8.4 µg/m³
31
Arnold West, Missouri, USA
14.0 km PM2.5: 7.4 µg/m³
55
Ladue, Missouri, USA
14.4 km PM2.5: 14.0 µg/m³
23
Ladue, Missouri, USA
14.4 km PM2.5: 5.5 µg/m³
41
Blair Street, Missouri, USA
15.4 km PM2.5: 9.8 µg/m³

What cities are near Lemay?

49 Mehlville 47 Affton 48 Concord 50 Oakville 43 Webster Groves 44 Kirkwood 53 St. Louis 40 Clayton 41 University City 54 East Saint Louis
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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 2026-08-08T02:58 UTC.