Observed arrival · 2026-11-06
SwimSeasonCheck maps pool season by city
A city lookup estimates when an outdoor pool reaches swimming temperature and compares what different heaters could add, including estimated costs.
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$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Outdoor pool owners comparing swim seasons and heaters
- Worth noticing
- Its estimates use 30 years of NOAA air normals and NASA sunshine data, not measurements from actual pools.
Field notes
The site sets 78°F as its swimming threshold and presents month-by-month estimates, with example comparisons for Phoenix, Los Angeles, and Chicago. It says heater costs use state electricity and gas prices, and cautions that shade, wind, and pool depth can shift estimated water temperatures by a few degrees. The state index covers cities with populations of 10,000 or more.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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