Today | Weather | Monday, September 21, 2026

Weather in St. George, Utah

11:54 AM
Now
Rainy Weather
82° F
Feels Like 81°
Precipitation 85 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 16 %
Today
Partly Sunny with Showers
Day 90°
Night 64°
Precipitation 100 %
Wind 6 mph
UV Index (0 - 11+) 5

St. George Weather Forecast Updated

2 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Cloudy Night

Day

90°

Night

66°

Wind

6 mph

Precipitation

1 %

Air Quality in St. George

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.37 µg/m³
PM10 24.9 µg/m³
O3 0.034 ppm
NO2 1 ppb
SO2 0 ppb
CO 0.09 ppm
NH3 1.29 µg/m³
NO 0.3 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)
PM2.57.37 µg/m³
PM1024.9 µg/m³
O367.36 µg/m³
NO21.9 µg/m³
SO20.12 µg/m³
CO98.93 µg/m³
NH31.29 µg/m³
NO0.3 µg/m³