Monroe County · Florida Keys · Atlantic Coast
Should you swim at Sombrero Beach after rain?
This page is built for the day when a beach looks tempting but recent rain makes the normal badge harder to trust.
Current picture
GOOD on the latest sample at 10 CFU/100mL.
Long-term context
0 poor samples and 0 non-good samples in the displayed history.
Rain still matters
Stormwater can make this page stale faster than the normal testing schedule, especially after heavy rain.
Wait window
72 hours
Use that as the default buffer after heavy rain before trusting routine samples too much.
Latest poor sample
No poor sample in the displayed history
A recent poor sample is a stronger reason to be conservative after runoff.
Long-term spike risk
0%
Lower is better when weather makes your same-day decision harder.
Lower-Risk Nearby Options After Rain
Rain guide →Virginia Key Beach
Miami-Dade County · Atlantic Coast · 92 mi away
No poor samples in the displayed history · risk 0%
Bahia Honda State Park
Monroe County · Atlantic Coast · 12 mi away
No poor samples in the displayed history · risk 0%
Anne's Beach
Monroe County · Atlantic Coast · 20 mi away
No poor samples in the displayed history · risk 0%
Key West Beach
Monroe County · Atlantic Coast · 46 mi away
No poor samples in the displayed history · risk 0%
Crandon Park Beach
Miami-Dade County · Atlantic Coast · 90 mi away
No poor samples in the displayed history · risk 0%
South Beach
Miami-Dade County · Atlantic Coast · 95 mi away
Last poor sample Oct 31 · risk 8%
Water Quality History — Last 12 Months
Values in CFU/100mL. Green = Good (≤35.4), Yellow = Moderate (35.5–70.4), Red = Poor (≥70.5)
Recent Warning-Sign Samples
Full history →Keep Exploring Nearby
How To Use This Page
This page is built for the day when a beach looks tempting but recent rain makes the normal badge harder to trust.
Use this view as a decision aid, not a guarantee. The latest sample, visible runoff, and recent weather still matter more than any single list or chart.
If you want the main same-day answer instead, go back to the Sombrero Beach beach page.
Data from FL DOH Healthy Beaches Program. This is an independent project — check with Florida DOH for official conditions.