Up-to-date meteorological fire danger index for the whole country, broken down by autonomous community, with a citizen calculator for outdoor activities allowed in your area.
Meteorological fire index at the capital city of each Spanish autonomous community. Tap a card to see the regional detail with 7-day forecast, zoom map and sub-indices.
Tick the activities you were planning and we will cross-check each against the current fire risk index of your area. Search your city above first.
The Fire Weather Index (FWI) is a numerical system developed by the Canadian Forest Service in 1970 and adopted by the European Forest Fire Information System (EFFIS) and civil protection services across most of Europe, Spain included. It combines air temperature, relative humidity, wind speed and rainfall accumulated over the previous 24 hours with the moisture stored in forest fuels to produce a dimensionless number that estimates how easy it would be to ignite and spread a wildfire under average vegetation conditions.
FWI does not predict whether a fire will happen: it measures how strongly weather and fuel state would help any spark (a firework, a cigarette, a welding bead, a lightning strike) to become a hard-to-control blaze. A very high FWI can coincide with a day without fires if nobody starts one; a low value does not guarantee safety when fire-use practices are reckless.
| Level | FWI | Colour | Practical meaning |
|---|---|---|---|
| Low | < 5 | Green | Fire ignites with difficulty and spreads slowly. Routine vigilance. |
| Moderate | 5 - 12 | Yellow | Easy ignition but controllable spread. Avoid spark-producing activities. |
| High | 12 - 21 | Orange | Fast surface spread. Burns and barbecues are restricted. |
| Very high | 21 - 38 | Red | Extreme behaviour, crown fires likely. General fire ban. |
| Extreme | > 38 | Magenta | Seventh-generation wildfires possible. Any ignition is critical. |
WhatAWeather complements the FWI map with a full set of professional weather layers (animated wind, temperature, humidity and lightning) and with hydrological tools to assess vegetation state during the dry season, especially the Thornthwaite water balance which highlights the cumulative soil deficit and, by extension, the state of live and dead fuels.