FNUS52 KKEY 290826 FWFKEY Fire Weather Planning Forecast for the Florida Keys National Weather Service Key West FL 426 AM EDT Wed Jul 29 2026 .Discussion... A reverse cloud line is possible today and again on Thursday under the southwesterly flow. Waterspout formation is possible with any cloud line that does try and develop along with a slight chance of showers and thunderstorms. Light to gentle southwest to west breezes this morning will becoming gentle to moderate breezes this afternoon. Breezes decrease to light to gentle breezes for tonight and Thursday. Min RH values will be near 60 percent today and Thursday with decent RH recovery overnight to the mid 80s percent. Fair to generally good dispersion indices also expected today and Thursday. FLZ076>078-300115- Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Including the cities of Key Largo, Marathon, and Key West 426 AM EDT Wed Jul 29 2026 Today Tonight Thu Cloud Cover Mclear Mclear Mclear Chance Precip (%) 10 0 10 Chance of Thunder (%) 10 0 10 Weather Type Tstms None Tstms Max/Min Temp 93 82 93 Min/Max RH % 60 84 61 Wind 20ft AM (mph) SW 7 Lgt/Var Wind 20ft PM (mph) SW 8 SW 7 Lgt/Var Precip Duration 1 1 Precip Begin 6 AM 9 AM Precip End 6 PM 6 PM Precip Amount 0.00 0.00 0.00 Mixing Hgt(ft-agl) 3900 1500 3500 Transport Wnd (mph) SW 13 SW 8 SW 7 Dispersion Index 45 7 23 Max LVORI 4 5 4 Remarks...None. $$ .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY NIGHT...Partly cloudy. Lows in the lower 80s. Light winds. .FRIDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Light winds. .FRIDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 80s. Light winds. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Light winds. .SATURDAY NIGHT...Mostly cloudy with a slight chance of showers. Lows in the lower 80s. South winds around 5 mph. .SUNDAY...Mostly sunny with a slight chance of showers. Highs around 90. Southeast winds around 5 mph. .SUNDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the lower 80s. Southeast winds around 5 mph. .MONDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs around 90. Southeast winds around 5 mph. .MONDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 80s. Southeast winds around 5 mph. .TUESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 90. Southeast winds around 5 mph. $$ MJV