Today | Weather | Tuesday, August 25, 2026

Weather in Fremont, California

01:29 PM
Now
Cloudy Weather
75° F
Feels Like 77°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 3
Humidity 52 %
Today
Cloudy Weather
Day 81°
Night 57°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 7

Fremont Weather Forecast Updated

9 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 25, 2025)
Cloudy Night

Day

79°

Night

61°

Wind

6 mph

Precipitation

1 %

Air Quality in Fremont

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.69 µg/m³
PM10 10.13 µg/m³
O3 0.039 ppm
NO2 0.4 ppb
SO2 0.3 ppb
CO 0.08 ppm
NH3 0 µg/m³
NO 0.16 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)
PM2.53.69 µg/m³
PM1010.13 µg/m³
O376.38 µg/m³
NO20.67 µg/m³
SO20.8 µg/m³
CO86.69 µg/m³
NH30 µg/m³
NO0.16 µg/m³