Castillo de San Marcos is a National Monument in Florida. Established in 1924. It is known for its subtropical climate with warm humid summers, mild winters, and an active tropical-storm season. It lies in St. Johns County, FL. It sits at approximately 29.898°N, 81.311°W. BloomWX surfaces the signals that matter for visitors: hourly weather tied to the local NWS gridpoint, fire-weather outlooks, air quality (often degraded by wildfire smoke in summer), sunrise and sunset times, and any active alerts. Data refreshes every 60 seconds from weather.gov, USGS, NOAA SWPC, and EPA AirNow.
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