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Thermohélie
Surface temperatures in the sun, anywhere, hour by hour
Thermohélie estimates 2 m air and sun-exposed surface temperatures (asphalt, sand, metal, roofing) anywhere on Earth, hour by hour, from a transient energy balance on Open-Meteo data — with uncertainty and confidence on every result, from today to 2100.
Hi Product Hunt 👋
I'm a public-health physician and a weather enthusiast. I built Thermohélie because one question kept coming up in heat-wave work: not "how hot is the air?" but "how hot is the ground, the roof, the playground, the tarmac my patients walk on?" — and there was no simple tool for it.
What it does: for any place on Earth, hour by hour, it estimates the 2 m air temperature and the temperature of sun-exposed surfaces (asphalt, sand, metal, roofing, concrete…).
How: a full transient energy balance per surface — direct and diffuse solar on a tilted plane, sky infrared, wind-driven convection, evaporation and the material's thermal storage. Data from Open-Meteo (forecast, observations, ERA5 reanalysis). For 2030–2100, a 20-year local climatology shifted by AR6 / CMIP6 ensemble deltas under three scenarios.
What it refuses to do: hide uncertainty. Every result shows its data type (forecast, observation, reanalysis, projection), its source, an uncertainty range and a confidence index. It is not an official forecast and not a measurement.
Try it free, no sign-up: demo on Lille + 3 real estimates → https://thermohelie.neocities.or...
Then it's a one-time payment [prix] — no account, no subscription, your data stays on your phone. That single payment funds the professional data access.
I'd love your feedback on the physics, on the orders of magnitude, and especially on cases where the result looks wrong — give me the place, hour and material and I'll check. If you own an infrared thermometer, comparisons are very welcome.
Thank you!
About Thermohélie on Product Hunt
“Surface temperatures in the sun, anywhere, hour by hour”
Thermohélie was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #122 on the daily leaderboard. Thermohélie estimates 2 m air and sun-exposed surface temperatures (asphalt, sand, metal, roofing) anywhere on Earth, hour by hour, from a transient energy balance on Open-Meteo data — with uncertainty and confidence on every result, from today to 2100.
On the analytics side, Thermohélie competes within Weather, Climate Tech and Science — topics that collectively have 17.8k followers on Product Hunt. The dashboard above tracks how Thermohélie performed against the three products that launched closest to it on the same day.
Who hunted Thermohélie?
Thermohélie was hunted by Samer ABOUKAIS. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Thermohélie including community comment highlights and product details, visit the product overview.
Samer ABOUKAIS