What is the air quality in Lemay today?

The current Air Quality Index (AQI) in Lemay is 38 (Good). PM2.5 concentration is 9.01 µg/m³.

What is the temperature in Lemay right now?

The current temperature in Lemay is 15.1°C (feels like 15.1°C). Humidity is 77.9% and wind speed is 46.2 km/h.

Is it safe to go outside in Lemay?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Lemay, United States

Drizzle

15.1°C · 77.9% humidity

15.1°

Feels 15.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

3 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

43h · 3 stn

View full history →

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.

77.9%

Humidity

46.2 km/h

Wind E

1019.7 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

9.01 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Lemay?

Temperature & Precipitation

PM2.5 Trend

43h · 3 stations

PM2.59.01 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (3 stations within 25 km)

9.01

Median

8.8

Average

6.5

Low

10.3

High

PM2.5 µg/m³ · Model: 8.2 · Bias: -0.8

What is the 7-day forecast for Lemay?

10-20

13.8° 3.0°

10-21

25.0° 12.9°

5.62 mm

10-22

22.1° 9.4°

2.31 mm

10-23

12.4° 8.0°

10.44 mm

10-24

25.0° 10.4°

10-25

17.9° 4.6°

10-26

25.8° 6.2°

0.06 mm

Both models agree Avg diff: 4.3°C

Where are air quality stations near Lemay?

East St. Louis, Illinois, USA

13.5 km PM2.5: 10.1 µg/m³

Arnold West, Missouri, USA

14.0 km PM2.5: 10.1 µg/m³

Branch Street, Missouri, USA

15.7 km PM2.5: 12.6 µg/m³

What cities are near Lemay?

39 Mehlville 38 Affton 39 Concord 39 Oakville 36 Webster Groves 37 Kirkwood 34 St. Louis 34 Clayton 34 University City 41 East Saint Louis

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-10-20T21:04 UTC.