Today | Weather | Sunday, November 1, 2026

Weather in St. Peters, Missouri

10:34 PM
Now
Cloudy Weather
59° F
Feels Like 57°
Precipitation 0 %
Wind 8 mph
Humidity 90 %
Today
Rainy Weather
Day 63°
Night 59°
Precipitation 75 %
Wind 8 mph
UV Index (0 - 11+) 1

St. Peters Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (November 1, 2025)
Partly Sunny with Showers

Day

54°

Night

34°

Wind

7 mph

UV Index

3

Precipitation

70 %

Air Quality in St. Peters

NOW
25 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.38 µg/m³
PM10 4.53 µg/m³
O3 0.027 ppm
NO2 1.1 ppb
SO2 0.2 ppb
CO 0.15 ppm
NH3 0.06 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 4.38 µg/m³
PM10 – 4.53 µg/m³
O3 – 53.22 µg/m³
NO2 – 2.01 µg/m³
SO2 – 0.55 µg/m³
CO – 168.41 µg/m³
NH3 – 0.06 µg/m³
NO – 0 µg/m³