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Altadena, CA

81° F
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Altadena, CA Weather
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Today

 Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities
Excessive Heat Watch

Current Weather

9:30 AM

81°F
RealFeel® 86°
RealFeel Shade™ 80°
Air Quality Fair
Wind SE 1 mph
Wind Gusts 3 mph
Sunny More Details

Current Air Quality

Today

9/24

34
AQI

Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

Based on Current Pollutants

More Details

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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
See all
Tree Pollen
Low
The risk of tree pollen symptoms is low.
Ragweed Pollen
Low
The risk for ragweed pollen symptoms is low.
Mold
Low
The risk of mold allergy symptoms is low.
Grass Pollen
Low
The risk of grass pollen symptoms is low.
Dust & Dander
Moderate
The risk of dust and dander allergy symptoms is moderate. Closing your windows on windy days can help prevent outside dust or dander from getting into your home.
Arthritis
Low
The risk of experiencing weather-related arthritis pain is low.
Sinus Pressure
Moderate
The risk of weather-related sinus pressure is moderate. Make sure you stay hydrated.
Common Cold
Low
The risk of catching a cold is low.
Flu
Low
The risk of catching the flu is low.
Migraine
Moderate
The risk of suffering from a weather-related migraine is moderate.
Asthma
Moderate
The risk of asthma symptoms is moderate.
Fishing
Great
Fishing conditions are great. Find an area with less boat or human activity to avoid areas where fish are hiding.
Running
Great
Conditions for running are great. Be sure to warm up and cool down adequately.
Golf
Ideal
Conditions for golfing are ideal.
Biking & Cycling
Ideal
Conditions for cycling are ideal.
Beach & Pool
Great
Conditions for a day at the beach or pool are great. Remember to stay hydrated.
Stargazing
Great
Conditions for stargazing are great. Invest in a red flashlight. It can help prevent additional light pollution.
Hiking
Great
Conditions for hiking are great. Wear sunscreen and UV-protective clothing.
Lawn Mowing
Great
Conditions for lawn mowing are great. Ensure you are servicing your mower frequently to keep the blades sharp.
Composting
Good
Composting conditions are good. Make sure you frequently add water to your compost to keep it moist.
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
Great
Conditions for driving are great. Remain prepared for changing weather by tracking ongoing forecasts.
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
Moderate
The risk for pest activity is moderate. Do not leave garbage or food open and unattended.
See all

TODAY’S WEATHER FORECAST

9/24
94°Hi
RealFeel® 96°
Very warm with plenty of sun

Looking Ahead

A heat wave from today into Wednesday

TONIGHT’S WEATHER FORECAST

9/24
71°Lo
RealFeel® 69°
Clear

TOMORROW’S WEATHER FORECAST

9/25
96°/ 72°
RealFeel® 98°
Hot with plenty of sunshine

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