Today | Weather | Wednesday, August 12, 2026

Weather in St. George, Utah

05:48 AM
Now
Rainy Weather
79° F
Feels Like 75°
Precipitation 40 %
Wind 6 mph
Humidity 49 %
Today
Sunny with a Chance of Thunderstorms
Day 93°
Night 72°
Precipitation 55 %
Wind 7 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

St. George Weather Forecast Updated

31 minutes ago
Last updated on

Air Quality in St. George

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.62 µg/m³
PM10 14.61 µg/m³
O3 0.035 ppm
NO2 0.7 ppb
SO2 0 ppb
CO 0.09 ppm
NH3 1.86 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)
PM2.54.62 µg/m³
PM1014.61 µg/m³
O368.35 µg/m³
NO21.24 µg/m³
SO20.11 µg/m³
CO100.22 µg/m³
NH31.86 µg/m³
NO0 µg/m³