
New York City is known for its beautiful skyline, but down on street level, the city isn't as clean cut as its steel silhouette.

A new report by cleaning service BusyBee found that the Big Apple was the dirtiest city in the U.S.

The report ranked 40 urban areas in the U.S. using data from the Environmental Protection Agency, the American Housing Survey and the U.S. Census Bureau.

It determined a city's dirtiness based on a combination of elements including litter, population density, pollution and pests.

A report by cleaning service BusyBee has determined New York City as the nation's dirties urban area

The Big Apple (pictured above) is followed on the list by Los Angeles, Riverside-San Bernardino, Chicago and Philadelphia

New York City came in first thanks mostly to its population density, pests and litter.

New York City was followed on the list by Los Angeles, Riverside-San Bernardino in California, Chicago, Philadelphia and Phoenix.

Compared to other cities, the city that never sleeps actually has relatively low pollution.

Los Angeles had the worst nitrogen dioxide air pollution, followed by Denver, Riverside-San Bernardino, Phoenix and Atlanta.

Nitrogen dioxide is a harmful chemical that can make it hard to breathe.

Pittsburgh was the worst for particle matter air pollution, followed by Riverside-San Bernardino, Austin, Phoenix and Seattle.

Particle pollution are harmful substances that find a way into the bloodstream after being inhaled.

The cleanest of the 40 cities ranked on the list were Memphis, Raleigh, Tucson, Orlando and Jacksonville.