Here is a chart of the temperatures over the last few days.
Where there are gaps or flat sections, it's typically where the battery died or the WiFi failed.
The temperatures in the table are averaged over the day; today's temperatures are averaged over the last half hour or so.
The lifeguards' thermometer seems to be reading a degree or two lower than our sensors. To be investigated!
It's hard to get this page to refresh on your phone - another thing we're working on.