Stage 21 · 26 July 2026

Thoiry → Paris (Champs-Élysées)

133 kmFlat

Observed conditions from the ERA5 reanalysis archive.

Observed heat snapshot

+0.3°C(about average)vs the 1974-2023 average at this location (ERA5): 24.4°C

24.7°Cpeak in the race window

Moderate low-risk · 21°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

22.6°C'74–'83

23.7°C'84–'93

25.2°C'94–'03

24.9°C'04–'13

25.7°C'14–'23

-2°C50-yr avg+2°C

A day this hot (≥24.7°C, ERA5 at this location) occurred 43× in 1974-1983 vs. 82× in 2014-2023.

WBGT is an estimate — see methodology. Data as of 2026-08-01T22:34:18.549Z.