Today | Weather | Tuesday, January 13, 2026

Weather in Hayward, California

12:33 PM
Now
Sunny Weather
63° F
Feels Like 64°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 52 %
Today
Sunny Weather
Day 64°
Night 41°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3

Hayward Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (January 13, 2025)
Sunny Weather

Day

63°

Night

37°

Wind

12 mph

UV Index

3

Precipitation

0 %

Air Quality in Hayward

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

Pollutant Concentrations:

PM2.5 31.88 µg/m³
PM10 38.72 µg/m³
O3 0.039 ppm
NO2 10.3 ppb
SO2 1.1 ppb
CO 0.31 ppm
NH3 0.59 µg/m³
NO 4.92 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)
PM2.531.88 µg/m³
PM1038.72 µg/m³
O377.21 µg/m³
NO219.38 µg/m³
SO22.93 µg/m³
CO356.61 µg/m³
NH30.59 µg/m³
NO4.92 µg/m³