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Phoenix, Las Vegas named worst cities for ragweed season

Although pollen is often the main topic of discussion when allergies are mentioned, ragweed is another culprit that causes several breakouts throughout the spring. Recently, Quest Diagnostics released the results of a study aimed at determining which U.S. cities had the highest rates of ragweed and mold allergies.

Phoenix, Las Vegas and Kansas City were among the worst cities for ragweed and mold-sufferers, according to the data. Miami, San Francisco and Portland were near the bottom of the list with amounts that were three times lower than the cities at the top of the study.

"Considering that the ragweed season traditionally begins in August, Americans suffering from ragweed allergies should expect a very long summer," said Stanley Naides, the medical director of immunology at Quest Diagnostics.

Individuals who suffer from seasonal allergies can find relief through air purifiers, which can remove irritating particles from the atmosphere.

The IQAir HealthPro Plus has a HyperHEPA filter that can remove ultrafine particles smaller than 0.3 microns in size from up to 900 square feet of space, easily eliminating pollen, dust and pet dander from your indoor environment.