Today | Weather | Friday, October 23, 2026

Weather in Berkeley, California

07:29 PM
Now
Night
61° F
Feels Like 61°
Precipitation 0 %
Wind 6 mph
Humidity 69 %
Today
Cloudy Weather
Day 66°
Night 46°
Precipitation 5 %
Wind 8 mph
UV Index (0 - 11+) 4

Berkeley Weather Forecast Updated

54 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 23, 2025)
Cloudy Night

Day

66°

Night

54°

Wind

7 mph

Precipitation

0 %

Air Quality in Berkeley

NOW
43 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.57 µg/m³
PM10 14.53 µg/m³
O3 0.046 ppm
NO2 0.4 ppb
SO2 0.2 ppb
CO 0.13 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)
PM2.5 – 3.57 µg/m³
PM10 – 14.53 µg/m³
O3 – 90.48 µg/m³
NO2 – 0.71 µg/m³
SO2 – 0.64 µg/m³
CO – 149.11 µg/m³
NH3 – 0 µg/m³
NO – 0 µg/m³