Today | Weather | Monday, April 27, 2026

Weather in Livermore, California

01:36 PM
Now
Cloudy Weather
63° F
Feels Like 70°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 8
Humidity 52 %
Today
Cloudy Weather
Day 64°
Night 46°
Precipitation 25 %
Wind 8 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Livermore Weather Forecast Updated

Last updated on

Air Quality in Livermore

NOW
56 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.26 µg/m³
PM10 5.6 µg/m³
O3 0.056 ppm
NO2 0.2 ppb
SO2 0.3 ppb
CO 0.11 ppm
NH3 0 µg/m³
NO 0.08 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.52.26 µg/m³
PM105.6 µg/m³
O3109.56 µg/m³
NO20.41 µg/m³
SO20.91 µg/m³
CO131.72 µg/m³
NH30 µg/m³
NO0.08 µg/m³