FNUS52 KKEY 280858
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
458 AM EDT Mon Sep 28 2026

...DISPERSION INDICES BELOW 20 EXPECTED THIS AFTERNOON ACROSS THE
FLORIDA KEYS...

.Discussion...
Below normal rain chances expected today along with light and
variable winds at times. This will promote poor dispersion indices
this afternoon. Expect moisture to increase later this evening and
overnight with above normal rain/thunder chances returning. Winds
will remain light through Tuesday morning but steadily increase
throughout the afternoon. May continue to see dispersion indices
below 20 on Tuesday.


FLZ076>078-282315-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
458 AM EDT Mon Sep 28 2026

                      Today        Tonight      Tue

Cloud Cover           Pcldy        Pcldy        Mcldy
Chance Precip (%)     20           50           60
Chance of Thunder (%) 20           50           50
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          88           77           86
Min/Max RH %          58           86           70
Wind 20ft AM (mph)    Lgt/Var                   Lgt/Var
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      SE  5
Precip Duration       1            2            8
Precip Begin          8 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.00         0.05         0.25
Mixing Hgt(ft-agl)    3100         1000         2500
Transport Wnd (mph)   SW  5        SW  5        SE  9
Dispersion Index      17           6            14
Max LVORI             3            4            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the upper 70s. East winds around 5 mph.
.WEDNESDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the mid 80s. East winds around 10 mph.
.WEDNESDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the upper 70s. East winds around
10 mph.
.THURSDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the upper 80s. East winds around 15 mph.
.THURSDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows around 80. East winds around 15 mph.
.FRIDAY...Partly sunny with showers likely and a chance of
thunderstorms. Highs in the upper 80s. East winds around 15 mph.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows around 80. East winds around 10 mph.
.SATURDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the upper 80s. East winds around 10 mph.
.SATURDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows around 80. East winds around 10 mph.
.SUNDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the upper 80s. East winds around 10 mph.

$$