Have you ever wondered how environmentally friendly your city is? Well, in order to determine how green a city is one must look at numerous factors. These factors include quality of air and water, housing density, commitment to the use of alternative energy, and accessibility to eco-friendly choices, such as public transportation.

Find out what the top ten greenest cities in the United States are below; the list may surprise you.

1. Honolulu, Hawaii

Population: 402,500

Honolulu tops the list due to the city's extensive use of solar energy.

2. Washington, DC

Population: 601,723

Washington, DC is one of the nation's greenest cities due to its excellent transportation.

3. Arlington, Virginia

Population: 229,164

In very close proximity to Washington, DC, Arlington has less commuters as a result of the city's high population density.

4. San Francisco, California

Population: 789,172

San Francisco makes the list because of the high number walking commuters and dedication to the use of solar energy throughout the city. The city enacted a curbside compost pickup, paving the way for other large American cities.

5. Miami, Florida

Population: 399,457

Very few commuters in Miami use public transportation. However, this city's air quality is preserved by the high number of commuters that carpool.

6. New York City, New York

Population: 8,550,405

New York City is a very small area that is densely populated. Due to this fact, it is very easy for commuters to walk or take public transportation.

7. Boston, Massachusetts

Population: 617,594

Boston has the highest number of commuters that walk to work in the nation. Boston is the first city in the country to develop a green building standard that requires all large buildings to meet LEED requirements.

8. Orlando, Florida

Population: 270,934

The city of Orlando's air quality is a reflection of the little coal resident's need to consume for heat.

9. Seattle, Washington

Population: 686,800

Most of Seattle's commuters walk or bike to work, contributing the the city's good air quality. Seattle has on of the largest amounts of green city space in the U.S.

10. Jersey City, New Jersey

Population: 240,055

The air quality if Jersey City isn't great. However, Jersey City has an extremely high amount of commuters that use public transit. Jersey City has the second largest amount of commuters that use public transit, 46%, in the entire country.

To see the top 25 greenest cities, as well as, a break down for each city check out the list below.