Sentinel-2 · Open-Meteo · Citizen Science
BloomCast
Seethebloombeforeitsurfaces.
A 3–7 day cyanobacteria forecast for the waterbodies communities rely on. Free, predictive, and honest about what the model knows.
3–7
day lead time
19
pilot waterbodies
$0
monthly cost
100%
free & open
Live outlook
Selected pilot
Lake Erie · live 5-day
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Why it matters
Thecrisisisreal.Theleadtimeistheanswer.
0
Toledo 'do not drink' advisory
500,000 residents, 3 days
$2–4B
Global annual cost of blooms
treatment, recreation, fisheries
3–7
Day lead time
before bloom maturation
Tier 2
WHO hazard classification
recreational water quality
Prediction · Proof · Planning
Prediction.Proof.Planning.
Three pillars that no competing free or paid tool delivers together.
Readywhenthebloomis.
Open source. Free tier. No credit cards — a working bloom-forecasting service in an afternoon.
“BloomCast outputs are advisory support for environmental decision-makers and do not constitute a safety determination.”