Today | Weather | Sunday, August 17, 2025

Weather in Santa Clara, California

07:26 PM
Now
Cloudy WeatherCloudy weather, overcast skies with clouds.
72° F
Feels Like 68°
Precipitation 0 %
Wind 12 mph
UV Index (0 - 11+) 6
Humidity 57 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 75°
Night 57°
Precipitation 0 %
Wind 10 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.

Other:

Partly sunny and less muggy.

Santa Clara Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 17, 2024)

Day

84°

Night

63°

Air quality in Santa Clara

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

Pollutant Concentrations:

PM2.5 7.18 µg/m³
PM10 8.58 µg/m³
O₃ 25.03 ppb
NO₂ 3.11 ppb
SO₂ 0.52 ppb
CO 102.39 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