Today | Weather | Tuesday, November 11, 2025

Weather in Fontana, California

02:12 AM
Now
Cloudy Night
64° F
Feels Like 64°
Precipitation 0 %
Wind 6 mph
Humidity 30 %
Today
Cloudy Weather
Day 86°
Night 57°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 4

Fontana Weather Forecast Updated

58 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 11, 2024)
Cloudy Night

Day

72°

Night

48°

Wind

6 mph

Precipitation

11 %

Air Quality in Fontana

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

Pollutant Concentrations:

PM2.5 15.53 µg/m³
PM10 26.55 µg/m³
O3 0.045 ppm
NO2 0.6 ppb
SO2 0.2 ppb
CO 0.14 ppm
NH3 0 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.515.53 µg/m³
PM1026.55 µg/m³
O387.52 µg/m³
NO21.07 µg/m³
SO20.52 µg/m³
CO165.35 µg/m³
NH30 µg/m³
NO0 µg/m³