Solar Energy & Solar Power Resources

Solar Power in 91009 (Duarte, CA)

Solar Energy in 91009

Sorry, historical solar radition values for 91009 are currently unavailable, please check back later.

Solar Panels in 91009

Solar panels in 91009 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 91009

The total length of the day in 91009 (Duarte, CA) today (July 22, 2026) will be 14 hours and 7 minutes. [More]

Solar Energy in 91009 (Duarte, CA)

Solar Energy Data for 91009

See the chart below to see how different types of solar panel installations compare in 91009.

Historical solar power output data for Duarte is not currently available.

Solar Energy Analysis for 91009

Sorry, it is not possible to complete our solar energy analysis for 91009 at this time.

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Solar Energy Glossary

Global Horizontal Irradiance (GHI)

Global Horizontal Irradiance: The total amount of solar radiation that is received per unit area by a surface that is always positioned in a horizontal manner.

Direct Normal Irradiance (DNI)

Direct Normal Irradiance: The total amount of solar radiation received per unit area by a surface that is always perpendicular to the sun rays that come in a straight line from the direction of the sun at its current position in the sky.

Average Tilt at Latitude (ATaL)

Average Tilt at Latitude: The total amount of solar radiation received per unit area by a surface that is tilted toward the equator at an angle equal to the current latitude. ATaL will often produce the optimum energy output.

Solar Radiation Levels in 91009

Solar Radiation Data in 91009

See the chart below for monthly solar radiation levels in 91009.

Sorry, data is not currently available.

Solar Radiation Analysis for 91009

Sorry, it is not possible to complete our solar radiation analysis for 91009 at this time.

Historical solar radiation data for 91009 is not currently available.

Please check back later.

Solar Power Comparison: 91009 vs. the U.S.

Solar Power Levels in 91009

Sorry, solar radiation data for 91009 is not currently available.

Solar Power: 91009 vs. the U.S.

Below is a month-by-month comparison of how average 91009 solar radiation levels compare to average levels in a city with historcially high levels (NV) and a city with historically low levels (WA). ^[1]

Sorry, solar radiation data for California is not currently available.

Solar Data & Statistics for 91009

Sunrise / Sunset in 91009

Sunrise/Sunset for July 22, 2026 ^[2]
- Sunrise: 5:54 am
- Sunset: 8:01 pm
- Length of Day: 14:7

Best Months for Solar in 91009

Monthly data not currently available.

Solar Panel Installs in 91009

We do not have data on solar panel installations in ZIP Code 91009 at the current time.

Solar Power Output in 91009

The Power of Solar in 91009

Monthly AC solar system output averages for 91009. Month-by-month solar power, as ranked by AC output, in 91009. ^[2]

AC output data is not currently available.

Solar Output Analysis for 91009

Sorry, it is not possible to complete our solar radiation analysis for 91009 at this time.

Historical solar radiation data for 91009 is not currently available.

Please check back later.

Weather Forecast for 91009 ^[5]

Wed Jul 22

89°F

Sky Is Clear
Min: 70°F
Max: 91°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 41%
Cloud cover: 0%

Thu Jul 23

97°F

Sky Is Clear
Min: 73°F
Max: 100°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 23%
Cloud cover: 0%

Fri Jul 24

96°F

Sky Is Clear
Min: 82°F
Max: 99°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 31%
Cloud cover: 0%

Sat Jul 25

96°F

Sky Is Clear
Min: 80°F
Max: 103°F

Gentle Breeze: 9 mps SSW
Precip.: n/a
Humidity: 29%
Cloud cover: 0%

Sun Jul 26

96°F

Few Clouds
Min: 77°F
Max: 96°F

Gentle Breeze: 11 mps SSW
Precip.: n/a
Humidity: 28%
Cloud cover: 19%

Mon Jul 27

90°F

Broken Clouds
Min: 74°F
Max: 90°F

Gentle Breeze: 9 mps S
Precip.: n/a
Humidity: 37%
Cloud cover: 73%

More about 91009

About 91009

The ZIP code 91009 is associated with the city of Duarte in Los Angeles County in California.

91009 Solar Energy & Power

To learn more about solar energy and solar power in 91009, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.