Today | Weather | Monday, October 12, 2026

Weather in St. Joseph, Missouri

08:06 PM
Now
Cloudy Night
81° F
Feels Like 81°
Precipitation 4 %
Wind 9 mph
Humidity 56 %
Today
Night
Day 90°
Night 63°
Precipitation 25 %
Wind 6 mph

St. Joseph Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 12, 2025)
Rainy Weather

Day

84°

Night

61°

Wind

8 mph

Precipitation

55 %

Air Quality in St. Joseph

NOW
42 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.1 µg/m³
PM10 7.78 µg/m³
O3 0.046 ppm
NO2 0.8 ppb
SO2 0.3 ppb
CO 0.09 ppm
NH3 1.01 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 – 4.1 µg/m³
PM10 – 7.78 µg/m³
O3 – 89.67 µg/m³
NO2 – 1.49 µg/m³
SO2 – 0.85 µg/m³
CO – 101.51 µg/m³
NH3 – 1.01 µg/m³
NO – 0 µg/m³