Red Flag Warning

Current Weather

9:21 PM

Current Air Quality

Saturday

12/9

AQI

Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.

Based on Current Pollutants
More Details
Learn more at

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

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Tree Pollen

Low

The risk of tree pollen symptoms is low.

Ragweed Pollen

Low

The risk for ragweed pollen symptoms is low.

Mold

Moderate

The risk of mold allergy symptoms is moderate. Be sure to prevent mildew and indoor mold in your home's basement, bathrooms, and laundry room.

Grass Pollen

Low

The risk of grass pollen symptoms is low.

Dust & Dander

High

The risk of dust and dander allergy symptoms is high. Be sure you're vacuuming with a HEPA-approved filter.

Arthritis

Low

The risk of experiencing weather-related arthritis pain is low.

Sinus Pressure

High

The risk of weather-related sinus pressure is high. Taking a hot shower may help ease sinus pressure.

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

High

The risk of asthma symptoms is high. Be sure to use HEPA filters in your home to cut down on indoor asthma triggers.

Fishing

Poor

Fishing conditions are poor.

Running

Good

Conditions for running are good. Be sure to wear sunscreen and UV-protective activewear.

Golf

Good

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

Biking & Cycling

Good

Conditions for cycling are good. Stay hydrated to make the most of your ride.

Beach & Pool

Good

Conditions for a day at the beach or pool are good. Be sure to wear sunscreen and UV-protective clothing when spending time outdoors.

Stargazing

Good

Conditions for stargazing are good. Be sure to move away from city lights or turn off nearby lights, including indoor and outdoor lights.

Hiking

Good

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

Lawn Mowing

Good

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

Composting

Poor

Composting conditions are poor. Keep your compost area covered.

Outdoor Entertaining

Good

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

Air Travel

Ideal

Conditions for flying are ideal. Have a safe trip.

Driving

Fair

Conditions for driving are fair. Keep up with your car maintenance, such as inspecting your windshield wipers and checking your tire treads.

Mosquitos

Low

The risk for mosquito activity are low.

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

High

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

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Current Air Quality

Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.

Based on Current Pollutants
More Details
Learn more at

Learn more at

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.

TONIGHT’S WEATHER FORECAST

TOMORROW’S WEATHER FORECAST

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Altadena, CA

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

Video

Winter Center

Today

Current Weather

Current Air Quality

Poor The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation. Based on Current Pollutants More Details Learn more at

Learn more at

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.

TONIGHT’S WEATHER FORECAST

TOMORROW’S WEATHER FORECAST

Altadena Weather Radar

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Weather Near Altadena:

Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.

Based on Current Pollutants
More Details
Learn more at