Today | Weather | Monday, July 20, 2026
Active Weather Warnings

Weather in Salt Lake City, Utah

03:58 AM
Now
Rainy Night
81° F
Feels Like 75°
Precipitation 45 %
Wind 8 mph
Humidity 39 %
Today
Stormy Weather
Day 102°
Night 79°
Precipitation 55 %
Wind 8 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.

Salt Lake City Weather Forecast Updated

8 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 20, 2025)
Cloudy Night

Day

97°

Night

77°

Wind

10 mph

Precipitation

0 %

Air Quality in Salt Lake City

NOW
31 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.54 µg/m³
PM10 5.92 µg/m³
O3 0.033 ppm
NO2 1.3 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 4.22 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)
PM2.53.54 µg/m³
PM105.92 µg/m³
O365.14 µg/m³
NO22.51 µg/m³
SO20.54 µg/m³
CO106.31 µg/m³
NH34.22 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Salt Lake City

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 19 at 9:58PM MDT until July 21 at 12:00AM MDT by NWS Salt Lake City UT
Jul 20, 12:00 PM Jul 21, 12:00 AM
WHAT: Hazardous temperatures in excess of 100 degrees are
forecast to develop Monday afternoon across valley locations in
northwest Utah, particularly along the northern Wasatch Front and
the Great Salt Lake Desert.

WHERE: Eastern Box Elder County, Great Salt Lake Desert and
Mountains, Northern Wasatch Front, Salt Lake Valley, and Tooele
and Rush Valleys.

WHEN: From noon Monday to midnight MDT Monday Night.

IMPACTS: Low temperatures into Monday morning will stay elevated
in the upper 60s to mid 70s for most lower valley locations,
offering little relief overnight.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Updated: Jul 20, 3:49 AM Source: NWS Alert