San Juan Breaks 89-Year Rainfall Record with 1.87 Inches on October 4th

San Juan established a new daily rainfall record on Sunday, October 4th, with 1.87 inches of precipitation recorded at Luis Muñoz Marín International Airport, according to the National Weather Service. This measurement surpassed the previous record of 1.31 inches set in 1937, breaking an 89-year-old record. Such extreme weather events can have significant impacts on public health infrastructure and disease transmission patterns in tropical regions. Heavy rainfall increases risks of waterborne illnesses, flooding-related injuries, and infrastructure damage that may affect healthcare delivery in Puerto Rico.
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Read full article(opens in new tab)Fetched: October 5, 2026 at 10:01 AM



