Today | Weather | Wednesday, September 10, 2025

Weather in Fontana, California

09:35 PM

Now

68° F

Feels Like 64°

Precipitation 0 %

Wind 8 mph

Humidity 71 %

Today

Day 81°

Night 63°

Precipitation 1 %

Wind 10

Fontana Weather Forecast Updated

Last updated on September 10, 2025 8:30 PM

Last Year's Weather on This Day (September 10, 2024)

104°

63°

9 mph

NOW

44 AQI

Good air quality Dominant pollutant: O3

PM2.5 9.38 µg/m³

PM10 10.33 µg/m³

O₃ 32.27 ppb

NO₂ 9.82 ppb

SO₂ 2.67 ppb

CO 146.17 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

With this level of air quality, you have no limitations. Enjoy the outdoors