Today | Weather | Sunday, July 19, 2026

Weather in Hayward, California

10:30 PM
Now
Cloudy Night
63° F
Feels Like 59°
Precipitation 0 %
Wind 8 mph
Humidity 80 %
Today
Cloudy Night
Day 75°
Night 59°
Precipitation 0 %
Wind 7 mph

Hayward Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 19, 2025)
Cloudy Night

Day

73°

Night

54°

Wind

8 mph

Precipitation

0 %

Air Quality in Hayward

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.42 µg/m³
PM10 16.98 µg/m³
O3 0.032 ppm
NO2 0.6 ppb
SO2 0.3 ppb
CO 0.08 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)
PM2.55.42 µg/m³
PM1016.98 µg/m³
O362.22 µg/m³
NO21.2 µg/m³
SO20.84 µg/m³
CO87.43 µg/m³
NH30 µg/m³
NO0 µg/m³