Today | Weather | Saturday, August 29, 2026

Weather in Hayward, California

01:14 AM
Now
Cloudy Night
61° F
Feels Like 55°
Precipitation 0 %
Wind 14 mph
Humidity 83 %
Today
Cloudy Weather
Day 73°
Night 57°
Precipitation 1 %
Wind 12 mph
UV Index (0 - 11+) 7

Hayward Weather Forecast Updated

58 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 29, 2025)
Night

Day

79°

Night

55°

Wind

7 mph

Precipitation

0 %

Air Quality in Hayward

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.52 µg/m³
PM10 13.26 µg/m³
O3 0.028 ppm
NO2 0.5 ppb
SO2 0.3 ppb
CO 0.07 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)
PM2.53.52 µg/m³
PM1013.26 µg/m³
O355.73 µg/m³
NO20.95 µg/m³
SO20.68 µg/m³
CO80.6 µg/m³
NH30 µg/m³
NO0 µg/m³