Stage 6 · 6 August 2026

Montbrison → Tournon-sur-Rhône

153.4 kmHilly

Observed conditions from the ERA5 reanalysis archive.

Observed heat snapshot

+5.0°Cvs the 1974-2023 average at this location (ERA5): 27.5°C

32.5°Cpeak in the race window

Moderate high-risk · 26°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

25.9°C'74–'83

27.0°C'84–'93

28.1°C'94–'03

27.0°C'04–'13

29.4°C'14–'23

-2°C50-yr avg+2°C

A day this hot (≥32.5°C, ERA5 at this location) occurred 3× in 1974-1983 vs. 49× in 2014-2023.

WBGT is an estimate — see methodology. Data as of 2026-08-13T12:21:31.309Z.