Today | Weather | Monday, December 29, 2025

Weather in Fremont, California

09:08 PM
Now
Night
46° F
Feels Like 43°
Precipitation 0 %
Wind 6 mph
Humidity 63 %
Today
Night
Day 64°
Night 39°
Precipitation 0 %
Wind 6 mph

Fremont Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 29, 2024)
Partly Sunny with Showers

Day

59°

Night

41°

Wind

12 mph

UV Index

1

Precipitation

75 %

Air Quality in Fremont

NOW
52 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 12.95 µg/m³
PM10 19.51 µg/m³
O3 0.026 ppm
NO2 11.4 ppb
SO2 0.9 ppb
CO 0.24 ppm
NH3 0.71 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 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)
PM2.512.95 µg/m³
PM1019.51 µg/m³
O351.15 µg/m³
NO221.45 µg/m³
SO22.42 µg/m³
CO279.64 µg/m³
NH30.71 µg/m³
NO0 µg/m³