Today | Weather | Saturday, August 16, 2025

Weather in Hayward, California

12:11 PM
Now
Cloudy WeatherCloudy weather, overcast skies with no rain.
66° F
Feels Like 66°
Precipitation 37 %
Wind 12 mph
UV Index (0 - 11+) 11
Humidity 78 %
Today
Rainy WeatherRainy weather, precipitation in the form of water droplets falling from the sky.
Day 72°
Night 61°
Precipitation 40 %
Wind 13 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Hayward Weather Forecast Updated

14 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 16, 2024)

Cloudy WeatherCloudy weather, overcast skies with clouds.

Day

81°

Night

54°

Wind

8 mph

UV Index

9

Precipitation

0

Air quality in Hayward

NOW
23 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 4.85 µg/m³
PM10 7.91 µg/m³
O₃ 15.35 ppb
NO₂ 4.40 ppb
SO₂ 0.59 ppb
CO 96.36 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors