Today | Weather | Friday, September 26, 2025

Weather in San Bernardino, California

07:49 AM

Now

66° F

Feels Like 64°

Precipitation 7 %

Wind 4 mph

UV Index (0 - 11+) 3

Humidity 71 %

Today

Day 81°

Night 64°

Precipitation 25 %

Wind 8

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.

San Bernardino Weather Forecast Updated

Weather Forecast History

Last Year's Weather on This Day (September 26, 2024)

Day

90°

Night

61°

Wind

4 mph

Precipitation

Air quality in San Bernardino

NOW

56 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 12.75 µg/m³

PM10 14.85 µg/m³

O₃ 29.05 ppb

NO₂ 7.29 ppb

SO₂ 2.33 ppb

CO 161.08 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 is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

View Hourly Air Quality Forecast