Today | Weather | Wednesday, November 19, 2025

Weather in Rialto, California

12:34 PM
Now
Cloudy Weather
61° F
Feels Like 64°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 3
Humidity 54 %
Today
Cloudy Weather
Day 61°
Night 46°
Precipitation 14 %
Wind 4 mph
UV Index (0 - 11+) 3

Rialto Weather Forecast Updated

55 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 19, 2024)
Cloudy Night

Day

68°

Night

43°

Wind

4 mph

Precipitation

1 %

Air Quality in Rialto

NOW
49 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.01 µg/m³
PM10 7.14 µg/m³
O3 0.053 ppm
NO2 0.9 ppb
SO2 0.8 ppb
CO 0.12 ppm
NH3 0.11 µg/m³
NO 0.29 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.55.01 µg/m³
PM107.14 µg/m³
O3103.26 µg/m³
NO21.75 µg/m³
SO22.1 µg/m³
CO136.12 µg/m³
NH30.11 µg/m³
NO0.29 µg/m³