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Portola Valley, CA

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Portola Valley, CA Weather

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Today

Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

8:33 AM

RealFeel® 56°

RealFeel Shade™ 56°

Air Quality Excellent

Wind Gusts 11 mph

Cloudy More Details

Current Air Quality

Today

9/30

16

AQI

Excellent

The air quality is ideal for most individuals; enjoy your normal outdoor activities.

Based on Current Pollutants
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Current Air Quality

Our current air quality index (AQI) provides information on the quality of air that you are breathing and its impact on your health. There are at least six different pollutants that we track that impact the cleanliness of air and your health.

Health & Activities

The risk of tree pollen symptoms is low.

The risk for ragweed pollen symptoms is low.

The risk of mold allergy symptoms is low.

The risk of grass pollen symptoms is moderate. Be sure to keep your windows and doors closed.

The risk of dust and dander allergy symptoms is low.

The risk of experiencing weather-related arthritis pain is moderate. Stay hydrated and stretch to help avoid arthritis symptoms.

The risk of weather-related sinus pressure is low.

The risk of catching a cold is low.

The risk of catching the flu is low.

The risk of suffering from a weather-related migraine is low.

The risk of asthma symptoms is moderate.

Fishing conditions are good. Fishing in the early morning or dusk hours can help you get a catch.

Conditions for running are great. Be sure to warm up and cool down adequately.

Conditions for golfing are good. Wear sunscreen while out on the course.

Biking & Cycling

Conditions for cycling are great. Be sure you have the correct gear to keep your core temperature warm during winter months and cool during hot weather.

Conditions for a day at the beach or pool are poor. Stay out of the water if there is a chance of lightning. Only swim in water temperatures below 55 degrees if you have the proper gear.

Conditions for stargazing are poor.

Conditions for hiking are good. Stay hydrated and bring enough water to last the entire hike.

Conditions for lawn mowing are good. Alternating mowing patterns can help all areas of your lawn grow.

Composting conditions are good. Make sure you frequently add water to your compost to keep it moist.

Outdoor Entertaining

Conditions for outdoor entertaining will be good. Make sure you have shade available, so guests do not overheat.

Conditions for flying are ideal. Have a safe trip.

Conditions for driving are great. Remain prepared for changing weather by tracking ongoing forecasts.

The risk for mosquito activity are low.

The risk for pest activity is high. Replacing outdoor lights with yellow bug lights can attract less insects near your home.

The risk for pest activity is low.

TODAY’S WEATHER FORECAST

RealFeel® 65°

A passing shower or two

TONIGHT’S WEATHER FORECAST

RealFeel® 54°

TOMORROW’S WEATHER FORECAST

RealFeel® 77°

Partly sunny and warmer

Portola Valley Weather Radar

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Portola Valley Weather Radar

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