Today | Weather | Tuesday, December 9, 2025

Weather in Corona, California

05:18 PM
Now
Night
75° F
Feels Like 73°
Precipitation 0 %
Wind 7 mph
Humidity 20 %
Today
Sunny Weather
Day 82°
Night 46°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 3

Corona Weather Forecast Updated

8 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 9, 2024)
Night

Day

70°

Night

50°

Wind

16 mph

Precipitation

0 %

Air Quality in Corona

NOW
165 AQI
Unhealthy air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 84.46 µg/m³
PM10 101.21 µg/m³
O3 0.043 ppm
NO2 37.5 ppb
SO2 1.1 ppb
CO 0.68 ppm
NH3 1.09 µg/m³
NO 0.46 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:

Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.

Show raw pollutant concentrations (µg/m³)
PM2.584.46 µg/m³
PM10101.21 µg/m³
O383.74 µg/m³
NO270.63 µg/m³
SO22.96 µg/m³
CO779.37 µg/m³
NH31.09 µg/m³
NO0.46 µg/m³