Collier County
Marco Island Red Tide Today
Marco Island is in Collier County, south of Naples. FWC's recent and historical sample labels may use Marco Beach, South Marco Beach, or Tigertail Beach.
not present/background (0-1,000) at Cape Romano; S of (Gullivan Bay), sampled 2026-09-10, 12.5 km from Marco Island.
FWC live records are fetched from the usual last 8 days. The freshness card below shows whether the newest matched sample is still inside that window.
Marco Island data freshness
Sep 16, 2026, 9:32 AM EDT
2026-09-10
6 days
2026-09-10 (6 days old)
Cape Romano; S of (Gullivan Bay)
If the sample age becomes older than the usual 8-day live sample window, this card will mark the page as outside window and say that no newer matched FWC sample was found. Freshness is based on public FWC sample dates and the static page build time.
Marco Island Red Tide Today
This page tracks nearby public FWC red tide samples for Marco Island and preserves the original source location for each reading. Current or historical labels may reference Marco Island, South Marco Beach, Tigertail Beach, or nearby Collier County sample points.
Marco Island Beach Conditions
Use this page for the red tide sample layer and NOAA respiratory forecast text where available. Beach flags, closures, surf, weather, access, and local operations come from separate official local sources.
Marco Island, South Marco, and Tigertail nearby searches
These nearby areas share the same regional context. Open the current readings below to see which official FWC location names matched this page.
- Marco Island red tideThis page is the current Marco Island red tide page, with original FWC source names shown beside each reading.
- South Marco Beach red tideSouth Marco Beach is kept as a Marco Island source-location and history label when FWC records match.
- Tigertail Beach red tideTigertail Beach is included as nearby Marco Island context rather than a separate page at this stage.
Marco Island Conditions From Official Samples
This page summarizes nearby public FWC red tide samples for Marco Island conditions today. It keeps the original FWC location names, sample dates, and abundance text visible so the source record can be checked directly.
Official Red Tide Sources
Nearest Sample Readings
| FWC location | Distance | Sample date | Abundance | Depth |
|---|---|---|---|---|
| Cape Romano; S of (Gullivan Bay) | 12.5 km | 2026-09-10 | not present/background (0-1,000) | 0.2 m |
| Coon Key; S of (Gullivan Bay) | 12.8 km | 2026-09-10 | not present/background (0-1,000) | 0.2 m |
| Shell Key; S of (Gullivan Bay) | 14.4 km | 2026-09-10 | not present/background (0-1,000) | 0.2 m |
| Round Key; N of (Fakahatchee Pass) | 23.9 km | 2026-09-10 | not present/background (0-1,000) | 0.2 m |
Sample Point Distribution
Current matched FWC source names for this page are grouped below. These are monitoring locations, not whole-beach measurements.
- Cape Romano; S of (Gullivan Bay)1 current sample
- Coon Key; S of (Gullivan Bay)1 current sample
- Round Key; N of (Fakahatchee Pass)1 current sample
- Shell Key; S of (Gullivan Bay)1 current sample
What This Page Can And Cannot Answer
It can show nearby public FWC sample text, the exact source location, sample date, NOAA forecast text where available, and nearby beach pages.
It cannot issue medical advice, beach closure guidance, travel advice, or a site-owned concentration estimate.
NOAA Respiratory Forecast
Very low at Cape Romano; S of (Gullivan Bay), +3h, valid 2026-09-16T17:00:00+00:00.
2026-09-16T09:00:00-04:00
NOAA forecasts potential respiratory irritation at individual beach locations using cell count category, wind speed, wind direction, and shoreline angle. RedTideToday displays NOAA forecast text as reported.
| Hour | Forecast | Valid time | NOAA location | Distance | Wind speed | Wind category |
|---|---|---|---|---|---|---|
| +3h | Very low | 2026-09-16T17:00:00+00:00 | Cape Romano; S of (Gullivan Bay) | 12.5 km | 8.7 kt | Medium |
| +3h | Very low | 2026-09-16T17:00:00+00:00 | Shell Key; S of (Gullivan Bay) | 14.4 km | 10.4 kt | Offshore |
| +3h | Very low | 2026-09-16T17:00:00+00:00 | Round Key; N of (Fakahatchee Pass) | 23.8 km | 10.4 kt | Offshore |
| +6h | Very low | 2026-09-16T20:00:00+00:00 | Cape Romano; S of (Gullivan Bay) | 12.5 km | 10.4 kt | Offshore |
| +6h | Very low | 2026-09-16T20:00:00+00:00 | Shell Key; S of (Gullivan Bay) | 14.4 km | 11.3 kt | Offshore |
| +6h | Very low | 2026-09-16T20:00:00+00:00 | Round Key; N of (Fakahatchee Pass) | 23.8 km | 11.3 kt | Offshore |
| +9h | Very low | 2026-09-16T23:00:00+00:00 | Cape Romano; S of (Gullivan Bay) | 12.5 km | 14.8 kt | Offshore |
| +9h | Very low | 2026-09-16T23:00:00+00:00 | Shell Key; S of (Gullivan Bay) | 14.4 km | 13.9 kt | Offshore |
| +9h | Very low | 2026-09-16T23:00:00+00:00 | Round Key; N of (Fakahatchee Pass) | 23.8 km | 13.9 kt | Offshore |
| +12h | Very low | 2026-09-17T02:00:00+00:00 | Cape Romano; S of (Gullivan Bay) | 12.5 km | 15.6 kt | Offshore |
| +12h | Very low | 2026-09-17T02:00:00+00:00 | Shell Key; S of (Gullivan Bay) | 14.4 km | 14.8 kt | Offshore |
| +12h | Very low | 2026-09-17T02:00:00+00:00 | Round Key; N of (Fakahatchee Pass) | 23.8 km | 13.9 kt | Offshore |
Recent Trend
- 2026-09-10 not present/background (0-1,000) at Cape Romano; S of (Gullivan Bay)
Nearby Beaches
- Naples 22.2 km
Red Tide History Here
Historical FWC location aliases used for this page include South Marco Beach. Historical samples are used for page selection and context, not for today's status.
What This Level Means
FWC abundance categories include not present/background, very low, low, medium, and high. This site displays FWC text as reported and links to official sources for health guidance.
FAQ
Is there red tide near Marco Island today?
not present/background (0-1,000) at Cape Romano; S of (Gullivan Bay), sampled 2026-09-10, 12.5 km from Marco Island.
Is there red tide in Marco Island today?
Use this page for nearby FWC red tide samples around Marco Island and official Collier County source labels. It does not report beach flags, closures, surf, weather, or a complete beach-condition panel.
Does this page calculate a beach-wide concentration?
No. It shows nearby public FWC sample readings and the original FWC abundance text.
Coming soon
Red Tide Alert Signup
Daily red tide email alerts are being prepared for tracked Florida beaches. The live site does not store subscriptions yet, so this box is a clear placeholder rather than a working alert promise.