Today | Weather | Friday, October 31, 2025

Weather in Irvine, California

06:47 AM

Now

55° F

Feels Like 55°

Precipitation 5 %

Wind 4 mph

Humidity 100 %

Today

Day 77°

Night 55°

Precipitation 0 %

Wind 6 mph

UV Index (0 - 11+) 4

Irvine Weather Forecast Updated

Last updated on October 31, 2025 5:15 AM

Weather Forecast History

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

Day

72°

Night

50°

Wind

4 mph

UV Index

Precipitation

Air Quality in Irvine

NOW

50 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 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

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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 12.03 µg/m³

PM₁₀ – 34.58 µg/m³

O₃ – 77.45 µg/m³

NO₂ – 0.73 µg/m³

SO₂ – 0.82 µg/m³

CO – 116.65 µg/m³

NH₃ – 0 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast