Today | Weather | Monday, April 6, 2026

Weather in Rialto, California

05:48 AM
Now
Cloudy Night
59° F
Feels Like 57°
Precipitation 0 %
Wind 5 mph
Humidity 52 %
Today
Cloudy Weather
Day 81°
Night 54°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Rialto Weather Forecast Updated

54 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 6, 2025)
Sunny Weather

Day

82°

Night

50°

Wind

6 mph

UV Index

8

Precipitation

1 %

Air Quality in Rialto

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

Pollutant Concentrations:

PM2.5 18.15 µg/m³
PM10 30.52 µg/m³
O3 0.057 ppm
NO2 0.5 ppb
SO2 0.5 ppb
CO 0.14 ppm
NH3 0.14 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)
PM2.518.15 µg/m³
PM1030.52 µg/m³
O3111.94 µg/m³
NO20.98 µg/m³
SO21.32 µg/m³
CO160.4 µg/m³
NH30.14 µg/m³
NO0 µg/m³