Today | Weather | Thursday, October 30, 2025

Weather in Rialto, California

11:30 AM

Now

84° F

Feels Like 88°

Precipitation 0 %

Wind 4 mph

UV Index (0 - 11+) 3

Humidity 10 %

Today

Day 91°

Night 55°

Precipitation 0 %

Wind 6 mph

UV Index (0 - 11+) 4

Rialto Weather Forecast Updated

55 minutes ago

Last updated on October 30, 2025 10:35 AM

Weather Forecast History

Last Year's Weather on This Day (October 30, 2024)

Day

70°

Night

48°

Wind

4 mph

Precipitation

Air Quality in Rialto

NOW

76 AQI

Moderate air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 24.17 µg/m³

PM₁₀ 36.45 µg/m³

O₃ 0.043 ppm

NO₂ 2.9 ppb

SO₂ 0.4 ppb

CO 0.23 ppm

NH₃ 0.37 µg/m³

NO 1.11 µg/m³

PM_2.5 – 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)

PM_2.5 – 24.17 µg/m³

PM₁₀ – 36.45 µg/m³

O₃ – 83.64 µg/m³

NO₂ – 5.45 µg/m³

SO₂ – 1.02 µg/m³

CO – 263.6 µg/m³

NH₃ – 0.37 µg/m³

NO – 1.11 µg/m³

View Hourly Air Quality Forecast