Mud Index · Now
0
/100
—
—
Rainfall 7d
—
past week
Ground Saturation
—
subsoil + 90-day rain memory
Rainfall 60d
—
past two months
Heaviest Rain
—
past 7 days
Today + 7-day forecast
Soil moisture & rainfall — 30 days + forecast
soil 0–1 cm (surface, dries in hours)
soil 3–9 cm (mud layer → index)
soil 9–81 cm (subsoil reserve)
rainfall
forecast
Mud index — 30 days + 7d ahead
dry
moderate
muddy
Location on map
How does the mud index work?
Mud needs two things: a wet surface and a full subsoil.
Wet now · soil 3–9 cm + rain of the last 6 days
Fresh rain weighs most (today ×0.6, yesterday ×0.5 … ×0.1).
Fresh rain weighs most (today ×0.6, yesterday ×0.5 … ×0.1).
Ground saturation · soil 9–81 cm + rain of 1 week to 3 months ago
After months of drought the subsoil soaks up rain: a wet week then gives a slick top layer, not deep mud.
After months of drought the subsoil soaks up rain: a wet week then gives a slick top layer, not deep mud.
Mud index = wet now × (0.15 + 0.85 × saturation1.5)
020406080100
■ 0–20 · Dry, ideal
■ 21–40 · Slightly wet, good to ride
■ 41–60 · Moderate, use caution
■ 61–80 · Muddy, difficult
■ 81–100 · Heavy mud, don't ride
■ 21–40 · Slightly wet, good to ride
■ 41–60 · Moderate, use caution
■ 61–80 · Muddy, difficult
■ 81–100 · Heavy mud, don't ride
⚠ Index is indicative. Clay soils (Limousin, Auvergne) get muddy faster than sandy soils (Landes, Provence).