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Stage 2 · 2 August 2026

AigleGenève

147.9 kmFlat

Observed conditions from the ERA5 reanalysis archive.

Observed heat snapshot

+7.8°Cvs the 1974-2023 average at this location (ERA5): 24.5°C

33.3°Cpeak in the race window

Moderate high-risk · 27°C WBGT (est.)
32.3°CAigle33.3°CLausanne32.3°CGenève

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

23.6°C'74–'83
24.0°C'84–'93
24.8°C'94–'03
24.1°C'04–'13
26.2°C'14–'23
-2°C50-yr avg+2°C

A day this hot (≥32.3°C, ERA5 at this location) occurred 3× in 1974-1983 vs. 16× in 2014-2023.

WBGT is an estimate — see methodology. Data as of 2026-08-13T12:21:27.465Z.