Solar Energy & Solar Power Resources

Solar Power in 91784 (Upland, CA)

Solar Energy in 91784

Sorry, historical solar radition values for 91784 are currently unavailable, please check back later.

Solar Panels in 91784

Solar panels in 91784 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 91784

The total length of the day in 91784 (Upland, CA) today (July 15, 2026) will be 14 hours and 15 minutes. [More]

Solar Energy in 91784 (Upland, CA)

Solar Energy Data for 91784

See the chart below to see how different types of solar panel installations compare in 91784.

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

Solar Energy Analysis for 91784

Sorry, it is not possible to complete our solar energy analysis for 91784 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 91784

Solar Radiation Data in 91784

See the chart below for monthly solar radiation levels in 91784.

Sorry, data is not currently available.

Solar Radiation Analysis for 91784

Sorry, it is not possible to complete our solar radiation analysis for 91784 at this time.

Historical solar radiation data for 91784 is not currently available.

Please check back later.

Solar Power Comparison: 91784 vs. the U.S.

Solar Power Levels in 91784

Sorry, solar radiation data for 91784 is not currently available.

Solar Power: 91784 vs. the U.S.

Below is a month-by-month comparison of how average 91784 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 91784

Sunrise / Sunset in 91784

Sunrise/Sunset for July 15, 2026 ^[2]
- Sunrise: 5:49 am
- Sunset: 8:04 pm
- Length of Day: 14:15

Best Months for Solar in 91784

Monthly data not currently available.

Solar Panel Installs in 91784

We do not have data on solar panel installations in ZIP Code 91784 at the current time.

Solar Power Output in 91784

The Power of Solar in 91784

Monthly AC solar system output averages for 91784. Month-by-month solar power, as ranked by AC output, in 91784. ^[2]

AC output data is not currently available.

Solar Output Analysis for 91784

Sorry, it is not possible to complete our solar radiation analysis for 91784 at this time.

Historical solar radiation data for 91784 is not currently available.

Please check back later.

Weather Forecast for 91784 ^[5]

Wed Jul 15

92°F

Scattered Clouds
Min: 67°F
Max: 95°F

Moderate breeze: 14 mps SW
Precip.: n/a
Humidity: 24%
Cloud cover: 35%

Thu Jul 16

90°F

Sky Is Clear
Min: 68°F
Max: 93°F

Moderate breeze: 13 mps WSW
Precip.: n/a
Humidity: 27%
Cloud cover: 0%

Fri Jul 17

85°F

Sky Is Clear
Min: 70°F
Max: 86°F

Moderate breeze: 13 mps SW
Precip.: n/a
Humidity: 37%
Cloud cover: 7%

Sat Jul 18

81°F

Scattered Clouds
Min: 67°F
Max: 82°F

Moderate breeze: 13 mps SW
Precip.: n/a
Humidity: 40%
Cloud cover: 45%

Sun Jul 19

81°F

Broken Clouds
Min: 68°F
Max: 85°F

Moderate breeze: 13 mps SW
Precip.: n/a
Humidity: 35%
Cloud cover: 62%

Mon Jul 20

83°F

Sky Is Clear
Min: 69°F
Max: 87°F

Gentle Breeze: 12 mps SW
Precip.: n/a
Humidity: 35%
Cloud cover: 0%

More about 91784

About 91784

The ZIP code 91784 is associated with the city of Upland in San Bernardino County in California.

91784 Solar Energy & Power

To learn more about solar energy and solar power in 91784, or for more solar-related resources for CA, check out the U.S. Energy Information Administration.