Session planner
Is tonight worth it?
Tell it where you are and it will say whether tonight is worth setting up for — and if it is, what to point at and when. It is allowed to say no.
On a first visit nothing is sent anywhere until you press Plan tonight. Then the place name goes to Open-Meteo exactly as you typed it, to be turned into coordinates, and those — rounded to about a kilometre — go back to Open-Meteo for the forecast. Never to us. If it remembers you, it asks for that forecast again by itself the next time you open this page. What this page does with your data.