Your pool
A few details unlock a week-and-a-half of water temperature outlook.
10-day water outlook
Physics estimate from a day/night heat balance with fenced-yard wind. Rain uses wet-bulb drop temperature plus storm surface mixing. Heaters add energy after weather losses.
Water temperature
Pool vs air high–lowDay by day
Weather · water trendPro tools
Leak check · party heat planEvaporation & level drop
Estimated water-level change from evaporation (and rain gain). Compare to a bucket test: if your pool drops much faster than this while weather matches, a leak is more likely.
| Day | Evap loss | Rain gain | Net level |
|---|
Level drop assumes a vertical-walled surface. Steps, beaches, and splash-out are not included. This is an estimate, not a certified leak diagnosis.
Party heat planner
Pick a day and target water temp. We’ll suggest when to start heating so you hit the goal without running the heater hard all week (especially before a hot weather swing).
Uses your Pro heater settings above. Set type, size, and leave control on “Hold set point” or we’ll plan with set-point mode.
Your perfect swim window is a forecast away
Enter your pool and location — we’ll blend local weather with pool physics so you can plan the warmest days, not guess them.
- See how covers and sun shift the water
- Test heater hours or a set point
- Save profiles for every backyard