Today | Weather | Sunday, September 13, 2026

Weather in Riverside, California

12:21 AM
Now
Night
73° F
Feels Like 73°
Precipitation 0 %
Wind 5 mph
Humidity 76 %
Today
Sunny Weather
Day 93°
Night 66°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 7

Riverside Weather Forecast Updated

4 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 13, 2025)
Cloudy Night

Day

82°

Night

63°

Wind

5 mph

Precipitation

0 %

Air Quality in Riverside

NOW
46 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 8.33 µg/m³
PM10 27.65 µg/m³
O3 0.050 ppm
NO2 0.6 ppb
SO2 0.4 ppb
CO 0.21 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.58.33 µg/m³
PM1027.65 µg/m³
O397.3 µg/m³
NO21.07 µg/m³
SO21.05 µg/m³
CO237.19 µg/m³
NH30 µg/m³
NO0 µg/m³