Today | Weather | Friday, October 31, 2025

Weather in Irvine, California

06:47 AM
Now
Foggy Weather
55° F
Feels Like 55°
Precipitation 5 %
Wind 4 mph
Humidity 100 %
Today
Cloudy Weather
Day 77°
Night 55°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 4

Irvine Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (October 31, 2024)

Sunny Weather

Day

72°

Night

50°

Wind

4 mph

UV Index

4

Precipitation

0

Air Quality in Irvine

NOW
50 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 12.03 µg/m³
PM10 34.58 µg/m³
O3 0.039 ppm
NO2 0.4 ppb
SO2 0.3 ppb
CO 0.10 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)
PM2.512.03 µg/m³
PM1034.58 µg/m³
O377.45 µg/m³
NO20.73 µg/m³
SO20.82 µg/m³
CO116.65 µg/m³
NH30 µg/m³
NO0 µg/m³