Today | Weather | Monday, August 11, 2025

Heat Advisory (Issued when high temperatures and humidity create conditions that may be hazardous during outdoor activity or prolonged exposure.)

Rancho Cucamonga, California. 04:43 PM

Now

90° F

Feels Like 90°

Precipitation 0 %

Wind 12 mph

UV Index (0 - 11+) 3

Humidity 35 %

Today

Day 91°

Night 63°

Precipitation 0 %

Wind 7 mph

UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

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.

Other:

Hazy bright sun.

Rancho Cucamonga Weather Forecast Updated

42 minutes ago

Last updated on August 11, 2025 4:01 PM

Weather Forecast History

Last Year's Weather on This Day (August 11, 2024)

Day

99°

Night

72°