Today | Weather | Tuesday, August 25, 2026
Active Weather Warnings

Weather in Hesperia, California

02:10 AM
Now
Cloudy Night
75° F
Feels Like 73°
Precipitation 0 %
Wind 6 mph
Humidity 38 %
Today
Sunny Weather
Day 102°
Night 70°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

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.

Hesperia Weather Forecast Updated

1 minute ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 25, 2025)
Stormy Weather

Day

91°

Night

64°

Wind

7 mph

Precipitation

55 %

Air Quality in Hesperia

NOW
78 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 25.29 µg/m³
PM10 38.64 µg/m³
O3 0.035 ppm
NO2 7.7 ppb
SO2 1 ppb
CO 0.18 ppm
NH3 0.81 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.525.29 µg/m³
PM1038.64 µg/m³
O367.98 µg/m³
NO214.41 µg/m³
SO22.66 µg/m³
CO210.75 µg/m³
NH30.81 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Hesperia

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued August 22 at 1:10PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA
Aug 25, 10:00 AM Aug 28, 8:00 PM
WHAT: Dangerously hot conditions with temperatures up to 108
possible and limited nighttime cooling.

WHERE: Apple and Lucerne Valleys.

WHEN: From Tuesday morning through Friday evening.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: Aug 22, 4:50 PM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 24 at 10:04PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA
Aug 25, 10:00 AM Aug 28, 8:00 PM
WHAT: Dangerously hot conditions with high temperatures in the
upper 90s to 105 expected.

WHERE: Apple and Lucerne Valleys County.

WHEN: From 10 AM Tuesday to 8 PM PDT Friday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events. Hot temperatures may cause heat illnesses.

ADDITIONAL DETAILS: Low temperatures 5 to 10 degrees above normal
will limit relief from the heat. Increasing temperatures into the
middle of next week will increase the threat of heat-related
illness across populations.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: Aug 25, 2:08 AM Source: NWS Alert