Air Quality in St. Marys, United States
Drizzle
16.6°C · 65.1% humidity
16.6°
Feels 16.6°
43
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
AQI Forecast
37
3pm
37
37
37
6pm
37
37
50
9pm
50
50
50
12am
50
37
37
3am
37
37
37
6am
37
37
37
9am
37
37
37
12pm
50
50
65.1%
Humidity
132.5 km/h
Wind NNE
1023.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
What is the weather forecast for St. Marys?
Temperature & Precipitation
PM2.510.4 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for St. Marys?
04-09
16.6° 13.0°
2.38 mm
04-10
19.3° 16.9°
0.06 mm
04-11
21.9° 16.7°
04-12
23.5° 17.5°
04-13
23.3° 18.9°
04-14
25.1° 16.9°
04-15
28.7° 18.1°
Both models agree
Avg diff: 1.7°C
What cities are near St. Marys?
Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T18:51 UTC.