Stage 15 · 19 July 2026

Champagnole → Plateau de Solaison

183.9 kmMountain — summit finish

Observed conditions from the ERA5 reanalysis archive.

Observed heat snapshot

+3.7°Cvs the 1974-2023 average at this location (ERA5): 17.8°C

28.1°Cpeak in the race window

Moderate high-risk · 24°C WBGT (est.)

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

16.4°C'74–'83

17.7°C'84–'93

17.7°C'94–'03

18.1°C'04–'13

19.3°C'14–'23

-2°C50-yr avg+2°C

A day this hot (≥21.5°C, ERA5 at this location) occurred 15× in 1974-1983 vs. 49× in 2014-2023.

WBGT is an estimate — see methodology. Data as of 2026-07-22T06:18:22.765Z.

Time on course: winner 4h 23m · last classified rider 5h 1m

Times from official published race results (rounded to the nearest minute).