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San Jose, CA Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Current Weather

9:25 AM

64°F
RealFeel® 71°
RealFeel Shade™ 63°
Air Quality Excellent
Wind SSE 6 mph
Wind Gusts 6 mph
Mostly sunny More Details

Current Air Quality

Today

5/21

19
AQI

Excellent

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

Based on Current Pollutants

More Details

Learn more at Plumb Labs Logo

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
See all
Tree Pollen
Moderate
The risk of tree pollen symptoms is moderate.
Ragweed Pollen
Low
The risk for ragweed pollen symptoms is low.
Mold
Low
The risk of mold allergy symptoms is low.
Grass Pollen
Moderate
The risk of grass pollen symptoms is moderate. Be sure to keep your windows and doors closed.
Dust & Dander
Low
The risk of dust and dander allergy symptoms is low.
Arthritis
Low
The risk of experiencing weather-related arthritis pain is low.
Sinus Pressure
Low
The risk of weather-related sinus pressure is low.
Common Cold
Low
The risk of catching a cold is low.
Flu
Low
The risk of catching the flu is low.
Migraine
Low
The risk of suffering from a weather-related migraine is low.
Asthma
Low
The risk of asthma symptoms is low.
Fishing
Ideal
Fishing conditions are ideal. Wear sunscreen and a hat if you'll be in the sun.
Running
Ideal
Conditions for running are ideal.
Golf
Ideal
Conditions for golfing are ideal.
Biking & Cycling
Ideal
Conditions for cycling are ideal.
Beach & Pool
Fair
Conditions for a day at the beach or pool are fair. Temperatures tend to be highest in the mid-afternoon if the day is on the cooler side.
Stargazing
Ideal
Conditions for stargazing are ideal. Check a star chart or an astronomy app before you head out to make the most of the night.
Hiking
Ideal
Conditions for hiking are ideal. Plan your route with enough time to finish before sundown.
Lawn Mowing
Ideal
Conditions for lawn mowing are ideal. Try to water your grass at least one inch every week to keep it strong in case of a drought.
Composting
Fair
Composting conditions are fair. All materials you add should be shredded or broken into smaller pieces.
Outdoor Entertaining
Ideal
Conditions for outdoor entertaining will be ideal. Be sure to wear sunscreen when spending time outdoors.
Air Travel
Ideal
Conditions for flying are ideal. Have a safe trip.
Driving
Ideal
Conditions for driving are ideal.
Mosquitos
Moderate
The risk for mosquito activity are moderate. Eliminate any standing water on your property where mosquitoes can breed.
Indoor Pests
High
The risk for pest activity is high. Replacing outdoor lights with yellow bug lights can attract less insects near your home.
Outdoor Pests
Moderate
The risk for pest activity is moderate. Do not leave garbage or food open and unattended.
See all

TODAY’S WEATHER FORECAST

5/21
82°Hi
RealFeel® 84°
Mostly sunny

TONIGHT’S WEATHER FORECAST

5/21
51°Lo
RealFeel® 52°
Mainly clear

TOMORROW’S WEATHER FORECAST

5/22
79°/ 54°
RealFeel® 84°
Plenty of sunshine

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