Today | Weather | Thursday, September 4, 2025

Weather in Riverside, California

10:41 AM
Now
Sunny WeatherSunny weather, clear skies and sunny weather.
90° F
Feels Like 95°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 11
Humidity 40 %
Today
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 100°
Night 66°
Precipitation 3 %
Wind 8 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:

Hot with plenty of bright sunlight.

Riverside Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 4, 2024)

Hot DayHot and sunny weather, with high temperatures and strong sunshine.

Day

109°

Night

70°

Wind

8 mph

UV Index

8

Precipitation

0

Air quality in Riverside

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

Pollutant Concentrations:

PM2.5 12.92 µg/m³
PM10 29.03 µg/m³
O₃ 39.41 ppb
NO₂ 16.90 ppb
SO₂ 1.86 ppb
CO 280.84 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.