Today | Weather | Thursday, December 4, 2025

Weather in Salt Lake City, Utah

02:30 AM
Now
Cloudy Night
30° F
Feels Like 28°
Precipitation 0 %
Wind 5 mph
Humidity 85 %
Today
Cloudy Weather
Day 43°
Night 34°
Precipitation 8 %
Wind 7 mph
UV Index (0 - 11+) 2

Salt Lake City Weather Forecast Updated

15 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 4, 2024)
Cloudy Night

Day

45°

Night

28°

Wind

4 mph

Precipitation

0 %

Air Quality in Salt Lake City

NOW
22 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.35 µg/m³
PM10 7.5 µg/m³
O3 0.024 ppm
NO2 2.1 ppb
SO2 0 ppb
CO 0.12 ppm
NH3 0.28 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)
PM2.52.35 µg/m³
PM107.5 µg/m³
O347.64 µg/m³
NO23.92 µg/m³
SO20.1 µg/m³
CO141.89 µg/m³
NH30.28 µg/m³
NO0 µg/m³