Solar Energy & Solar Power Resources

Solar Power in 90240 (Downey, CA)

Solar Energy in 90240

Sorry, historical solar radition values for 90240 are currently unavailable, please check back later.

Solar Panels in 90240

Solar panels in 90240 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 90240

The total length of the day in 90240 (Downey, CA) today (September 04, 2026) will be 12 hours and 48 minutes. [More]

Solar Energy in 90240 (Downey, CA)

Solar Energy Data for 90240

See the chart below to see how different types of solar panel installations compare in 90240.

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

Solar Energy Analysis for 90240

Sorry, it is not possible to complete our solar energy analysis for 90240 at this time.

Please check back later.

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 90240

Solar Radiation Data in 90240

See the chart below for monthly solar radiation levels in 90240.

Sorry, data is not currently available.

Solar Radiation Analysis for 90240

Sorry, it is not possible to complete our solar radiation analysis for 90240 at this time.

Historical solar radiation data for 90240 is not currently available.

Please check back later.

Solar Power Comparison: 90240 vs. the U.S.

Solar Power Levels in 90240

Sorry, solar radiation data for 90240 is not currently available.

Solar Power: 90240 vs. the U.S.

Below is a month-by-month comparison of how average 90240 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 90240

Sunrise / Sunset in 90240

Sunrise/Sunset for September 04, 2026 ^[2]
- Sunrise: 6:27 am
- Sunset: 7:15 pm
- Length of Day: 12:48

Best Months for Solar in 90240

Monthly data not currently available.

Solar Panel Installs in 90240

We do not have data on solar panel installations in ZIP Code 90240 at the current time.

Solar Power Output in 90240

The Power of Solar in 90240

Monthly AC solar system output averages for 90240. Month-by-month solar power, as ranked by AC output, in 90240. ^[2]

AC output data is not currently available.

Solar Output Analysis for 90240

Sorry, it is not possible to complete our solar radiation analysis for 90240 at this time.

Historical solar radiation data for 90240 is not currently available.

Please check back later.

Weather Forecast for 90240 ^[5]

Fri Sep 4

82°F

Sky Is Clear
Min: 64°F
Max: 83°F

Gentle Breeze: 10 mps SSW
Precip.: n/a
Humidity: 40%
Cloud cover: 0%

Sat Sep 5

85°F

Sky Is Clear
Min: 65°F
Max: 87°F

Gentle Breeze: 12 mps SW
Precip.: n/a
Humidity: 34%
Cloud cover: 0%

Sun Sep 6

77°F

Light Rain
Min: 73°F
Max: 79°F

Gentle Breeze: 9 mps NE
Precip.: Chance of Rain
Humidity: 44%
Cloud cover: 100%

Mon Sep 7

85°F

Sky Is Clear
Min: 75°F
Max: 91°F

Moderate breeze: 14 mps WSW
Precip.: n/a
Humidity: 38%
Cloud cover: 0%

Tue Sep 8

86°F

Scattered Clouds
Min: 77°F
Max: 91°F

Gentle Breeze: 11 mps WSW
Precip.: n/a
Humidity: 21%
Cloud cover: 27%

Wed Sep 9

88°F

Broken Clouds
Min: 78°F
Max: 92°F

Gentle Breeze: 9 mps WSW
Precip.: n/a
Humidity: 23%
Cloud cover: 54%

More about 90240

About 90240

The ZIP code 90240 is associated with the city of Downey in Los Angeles County in California.

90240 Solar Energy & Power

To learn more about solar energy and solar power in 90240, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.