We offer 2 separate subscriptions: a Forecast Subscription or an Iridium GO! Satellite Airtime Plan, so it is important that you cancel the correct subscription.
From your PC/Mac login to your account on the PredictWind forecast website https://forecast.predictwind.com/
Click on the Settings wheel at the top right of the screen.
Select Billing from the drop down box
Click on Change Plan
Click on the Downgrade button in the Free package option.
Please note the cancellation is immediate and does not allow for any cash refunds.
2) Satellite Airtime Plan: