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Stage 19 · 24 July 2026

Gap → Alpe d'Huez

127.9 kmMountain

Forecast — subject to change as the stage approaches.

Forecast heat snapshot

+4.8°Cvs the 1974-2023 average at this location (ERA5): 17.9°C

31.6°Cpeak in the race window

Moderate high-risk · 24°C WBGT (est.)
31.6°CGap26.7°CCol du Noyer22.7°CAlpe d'Huez

Schematic — real elevation, approximate route between known points, not survey-accurate. Fill colored by temperature.

+10°C26°C+42°C

Decade trend — deviation from the 50-year mean at this location

16.5°C'74–'83
18.2°C'84–'93
17.9°C'94–'03
17.7°C'04–'13
19.3°C'14–'23
-2°C50-yr avg+2°C

A day this hot (≥22.7°C, ERA5 at this location) occurred 13× in 1974-1983 vs. 26× in 2014-2023.The threshold here is a forecast, compared against the ERA5 historical record — forecast models and reanalysis can differ slightly even for the same date/location.

WBGT is an estimate — see methodology. Data as of 2026-07-22T06:01:13.547Z.

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