Maui water quality is worsening (-57pp in 14 days)
Maui ocean water quality worsened 57 percentage points over the last 14 days (100% clean two weeks ago vs. 43% clean now).
For a trip in the next week, prioritize islands with stronger structural protection (dry coasts, reef enclosure, no major streams). See cleanest Hawaiian island and BWA alternatives.
Big Island has been persistently under advisory for 28+ days (no recovery window in the data yet). Our 7 tracked beaches happen not to overlap with the DOH advisories driving this signal — the worsening trend is from island-wide or other-area advisory events. NOAA's 7-day forecast is dry, which should halt new advisory activity and let the existing advisories begin to clear. See the Big Island leaderboard for the beach-by-beach ranking.
Maui is worsening over the last 14 days (-57pp vs. the prior two weeks). 1 of our 6 tracked beaches on the island have active advisory days in the last 30 days. NOAA's 7-day forecast is dry, which should halt new advisory activity and let the existing advisories begin to clear. See the Maui leaderboard for the beach-by-beach ranking.
Oʻahu has been persistently under advisory for 28+ days (no recovery window in the data yet). 2 of our 12 tracked beaches on the island have active advisory days in the last 30 days. NOAA's 7-day forecast is mild — scattered showers possible but unlikely to drive new advisories. See the Oʻahu leaderboard for the beach-by-beach ranking.
Kauaʻi is improving over the last 14 days (+29pp vs. the prior two weeks). 6 of our 6 tracked beaches on the island have active advisory days in the last 30 days. NOAA's 7-day forecast is mild — scattered showers possible but unlikely to drive new advisories. See the Kauaʻi leaderboard for the beach-by-beach ranking.
For the always-live per-island outlook, see our Hawaii Water Quality Forecast, which regenerates daily from NOAA + DOH data.
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