Solar Energy & Solar Power Resources

Solar Power in 61109 (Rockford, IL)

Solar Energy in 61109

Sorry, historical solar radition values for 61109 are currently unavailable, please check back later.

Solar Panels in 61109

Solar panels in 61109 that will produce the maximum solar energy output. [More]

Sunrise & Sunset in 61109

The total length of the day in 61109 (Rockford, IL) today (July 13, 2026) will be 15 hours and 3 minutes. [More]

Solar Energy in 61109 (Rockford, IL)

Solar Energy Data for 61109

See the chart below to see how different types of solar panel installations compare in 61109.

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

Solar Energy Analysis for 61109

Sorry, it is not possible to complete our solar energy analysis for 61109 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 61109

Solar Radiation Data in 61109

See the chart below for monthly solar radiation levels in 61109.

Sorry, data is not currently available.

Solar Radiation Analysis for 61109

Sorry, it is not possible to complete our solar radiation analysis for 61109 at this time.

Historical solar radiation data for 61109 is not currently available.

Please check back later.

Solar Power Comparison: 61109 vs. the U.S.

Solar Power Levels in 61109

Sorry, solar radiation data for 61109 is not currently available.

Solar Power: 61109 vs. the U.S.

Below is a month-by-month comparison of how average 61109 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 Illinois is not currently available.

Solar Data & Statistics for 61109

Sunrise / Sunset in 61109

Sunrise/Sunset for July 13, 2026 ^[2]
- Sunrise: 5:30 am
- Sunset: 8:33 pm
- Length of Day: 15:3

Best Months for Solar in 61109

Monthly data not currently available.

Solar Panel Installs in 61109

We do not have data on solar panel installations in ZIP Code 61109 at the current time.

Solar Power Output in 61109

The Power of Solar in 61109

Monthly AC solar system output averages for 61109. Month-by-month solar power, as ranked by AC output, in 61109. ^[2]

AC output data is not currently available.

Solar Output Analysis for 61109

Sorry, it is not possible to complete our solar radiation analysis for 61109 at this time.

Historical solar radiation data for 61109 is not currently available.

Please check back later.

Weather Forecast for 61109 ^[5]

Mon Jul 13

84°F

Sky Is Clear
Min: 65°F
Max: 89°F

Gentle Breeze: 8 mps WNW
Precip.: n/a
Humidity: 64%
Cloud cover: 0%

Tue Jul 14

90°F

Few Clouds
Min: 68°F
Max: 92°F

Light breeze: 6 mps NW
Precip.: n/a
Humidity: 61%
Cloud cover: 15%

Wed Jul 15

87°F

Scattered Clouds
Min: 70°F
Max: 88°F

Light breeze: 6 mps NW
Precip.: n/a
Humidity: 64%
Cloud cover: 32%

Thu Jul 16

87°F

Light Rain
Min: 71°F
Max: 87°F

Gentle Breeze: 8 mps E
Precip.: Chance of Rain
Humidity: 66%
Cloud cover: 23%

Fri Jul 17

84°F

Light Rain
Min: 64°F
Max: 84°F

Gentle Breeze: 9 mps SSW
Precip.: Chance of Rain
Humidity: 68%
Cloud cover: 57%

Sat Jul 18

77°F

Light Rain
Min: 65°F
Max: 79°F

Moderate breeze: 15 mps N
Precip.: Chance of Rain
Humidity: 82%
Cloud cover: 42%

More about 61109

About 61109

The ZIP code 61109 is associated with the city of Rockford in Winnebago County in Illinois.

61109 Solar Energy & Power

To learn more about solar energy and solar power in 61109, or for more solar-related resources for IL, check out the U.S. Energy Information Administration.