Today | Weather | Friday, October 9, 2026
Active Weather Warnings

Weather in West Valley City, Utah

04:20 PM
Now
Cloudy Weather
82° F
Feels Like 81°
Precipitation 39 %
Wind 12 mph
UV Index (0 - 11+) 2
Humidity 22 %
Today
Sunny with a Chance of Thunderstorms
Day 82°
Night 66°
Precipitation 70 %
Wind 10 mph
UV Index (0 - 11+) 4

West Valley City Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 9, 2025)
Stormy Weather

Day

82°

Night

61°

Wind

10 mph

Precipitation

97 %

Air Quality in West Valley City

NOW
47 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.48 µg/m³
PM10 5.96 µg/m³
O3 0.051 ppm
NO2 0.1 ppb
SO2 0.2 ppb
CO 0.07 ppm
NH3 0.13 µg/m³
NO 0.04 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 – 3.48 µg/m³
PM10 – 5.96 µg/m³
O3 – 100.22 µg/m³
NO2 – 0.24 µg/m³
SO2 – 0.4 µg/m³
CO – 76.47 µg/m³
NH3 – 0.13 µg/m³
NO – 0.04 µg/m³

Weather Alerts and Warnings for West Valley City

Unknown Future Possible

Hydrologic Outlook

Hydrologic Outlook issued October 8 at 3:13PM MDT by NWS Salt Lake City UT
Oct 8, 3:13 PM → Oct 9, 6:00 PM
ESFSLC

The remnants of Tropical Storm Rachel will merge with a fall-like
storm system over the western United States, bringing moderate to
heavy rainfall and a resulting threat of flooding. Widespread
rainfall of 1 to 3 inches is expected, locally in excess of 3
inches, particularly across south aspects of southern Utah
mountains, between late Saturday and Monday morning.

Expect many area waterways including streams, rivers, normally
dry washes, creeks, and slot canyons to have rising, fast flows by
Sunday evening. Current forecasts do not bring any rivers to
flood stage, but this will be monitored as the fine details of
heavy rain bands become more confident. Those with activities near
rivers, streams, creeks and recent burn scars should closely
monitor the forecast over the next several days. Those with
outdoor plans Sunday onward that include any travel near waterways
across Utah should consider alternate plans.

Scattered showers and thunderstorms will remain possible through
at least Wednesday. While the rainfall rates with these additional
rounds of precipitation will generally be lower, areas that
receive significant precipitation during the weekend will be extra
sensitive to any additional rainfall.
Updated: Oct 9, 2:58 PM Source: NWS Alert