Scorching Summer: Philadelphia Experiences Record-Breaking Heat Waves

Philadelphia is experiencing its hottest summer on record, with 19 days of temperatures reaching at least 90 degrees by July 11, placing 2024 among the top three years for such a heat spell through July 11. This summer's sweltering pace is unprecedented, with temperatures reaching 97 degrees and heat indexes likely over 100 on Monday and Tuesday.

Key Takeaways:

• As of July 11, Philadelphia has seen 19 days of temperatures hitting at least 90 degrees, surpassing the number of 90-degree days in 14 full years.
• The current heat wave is the longest in 50 years, with no end in sight, according to the National Weather Service.
• The record-breaking heat is a result of climate change, with summers proving hotter for longer periods than in past decades.
• The urban heat island effect is particularly concerning, with over half a million people in Philadelphia living in neighborhoods affected by an urban heat island effect of more than 9 degrees compared to nonurban areas.
• The trend is clear: the Northeast is one of the fastest warming sections of the country.

Statistics:

• 19 days of temperatures reaching at least 90 degrees by July 11.
• 14 full years have seen fewer 90-degree days than the current count for 2024.
• 32 days of 90-degree or more days over the summer in Philadelphia, compared to 20 days 50 years ago.
• 35% of summer days in Philadelphia now reach 90 degrees or more, up from 22% 50 years ago.
• Over half a million people in Philadelphia live in neighborhoods affected by an urban heat island effect of more than 9 degrees compared to nonurban areas.

Sources:

• Climate Central
• The National Weather Service
• U.S. Environmental Protection Agency
• Time Magazine
• The Philadelphia Inquirer