Today | Weather | Friday, August 22, 2025

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

Weather in Riverside, California

06:44 PM

Now

91° F

Feels Like 90°

Precipitation 0 %

Wind 9 mph

UV Index (0 - 11+) 5

Humidity 29 %

Today

Day 102°

Night 72°

Precipitation 7 %

Wind 7 mph

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Other:

Mostly bright and clear and hot; dangerous heat.

Riverside Weather Forecast Updated

1 minute ago

Last updated on August 22, 2025 6:42 PM

Weather Forecast History

Last Year's Weather on This Day (August 22, 2024)

Day

93°

Night

64°

Wind

9 mph

UV Index

Precipitation

Air quality in Riverside

NOW

107 AQI

Unhealthy air quality for sensitive groups Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 17.00 µg/m³

PM10 18.30 µg/m³

O₃ 71.64 ppb

NO₂ 9.51 ppb

SO₂ 3.80 ppb

CO 172.63 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

Air quality may be unhealthy for sensitive groups. The general public is not likely to be affected.

View Hourly Air Quality Forecast