Today | Weather | Friday, October 30, 2026

Weather in Livermore, California

03:22 AM
Now
Cloudy Night
54° F
Feels Like 54°
Precipitation 0 %
Wind 5 mph
Humidity 79 %
Today
Cloudy Weather
Day 70°
Night 48°
Precipitation 6 %
Wind 7 mph
UV Index (0 - 11+) 3

Livermore Weather Forecast Updated

4 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 30, 2025)
Cloudy Night

Day

73°

Night

50°

Wind

6 mph

Precipitation

40 %

Air Quality in Livermore

NOW
45 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.89 µg/m³
PM10 6.98 µg/m³
O3 0.049 ppm
NO2 0.3 ppb
SO2 0.2 ppb
CO 0.11 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 – 1.89 µg/m³
PM10 – 6.98 µg/m³
O3 – 96.07 µg/m³
NO2 – 0.54 µg/m³
SO2 – 0.55 µg/m³
CO – 121.1 µg/m³
NH3 – 0 µg/m³
NO – 0 µg/m³