Today | Weather | Wednesday, February 25, 2026

Weather in Hayward, California

11:46 PM
Now
Cloudy Night
57° F
Feels Like 55°
Precipitation 40 %
Wind 5 mph
Humidity 87 %
Today
Cloudy Weather
Day 72°
Night 52°
Precipitation 3 %
Wind 7 mph
UV Index (0 - 11+) 4

Hayward Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 25, 2025)
Partly Sunny with Showers

Day

68°

Night

43°

Wind

6 mph

UV Index

4

Precipitation

49 %

Air Quality in Hayward

NOW
27 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.87 µg/m³
PM10 6.76 µg/m³
O3 0.030 ppm
NO2 1.6 ppb
SO2 0.3 ppb
CO 0.12 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)
PM2.53.87 µg/m³
PM106.76 µg/m³
O358.19 µg/m³
NO23.04 µg/m³
SO20.75 µg/m³
CO137.64 µg/m³
NH30 µg/m³
NO0 µg/m³