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Researchers at the University of Miami, Florida International University and others placed thermometers in parts of the county known to have intense urban heat island effects and found that maximum temperatures were, on average, 6 degrees higher than the official reading taken from the weather station at Miami International Airport. Those findings fit with another study published this month which concludes that many parts of Miami-Dade County get far hotter than the official temperature reading found on weather apps or newscasts. On average, temperatures in the Miami metro area - which, for the purposes of this study, covers a roughly 150-square-mile area that stretches from Westchester to Miami Beach and Hialeah to South Miami - are 8.3 degrees hotter because of the urban heat island effect, according to the Climate Central report. “With climate change, we’re already seeing increased extreme heat. “Cities are being disproportionately impacted by this heat,” said Kaitlyn Trudeau, a senior research associate at Climate Central. That means local residents who are already sweating through record-breaking summer heat have to deal with even higher temperatures every time they walk down the street. READ MORE: As seas get hotter, South Florida gets slammed by an ocean heat wave Only New York City and San Francisco trap more heat than Miami. cities, according to the Climate Central report. The Miami metropolitan area has the third-worst urban heat island effect out of the 44 biggest U.S. Generally, the effect is more intense in neighborhoods with bigger buildings and fewer trees, like Brickell or downtown, than it is in leafy suburbs like Coral Gables or Pinecrest.

That ranking is based on something called the “urban heat island effect.” Basically, it measures how temperatures rise higher in cities where the natural landscape has been replaced with densely packed buildings that trap heat. Miami is one of the hottest concrete jungles in the country, according to a report released this week by the nonprofit research group Climate Central.