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Wildfires in Switzerland

Detected · VIIRS 375 m · Suomi NPP, NOAA-20, NOAA-21 · last 24 hours · updated 2026-10-11 05:23 UTC

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Fire history, 2012–2025

Detected · VIIRS S-NPP 375 m · 0.01° cells (~1.1 km) · complete years 2012–2025 · built 2026-09-21

Between 2012 and 2025, VIIRS detected fire in 556 km² of Switzerland at least once. In an average year it detected fire in 67 km², ranking 170th of 200 countries.

67 km²detected in an average year
2017busiest year, 92 km²
2021quietest year, 47 km²
Junepeak month, 12% of fire-days

Year by year

2012: 78 km2'122013: 76 km2'132014: 57 km2'142015: 63 km2'152016: 66 km2'162017: 92 km2'172018: 90 km2'182019: 72 km2'192020: 74 km2'202021: 47 km2'212022: 67 km2'222023: 52 km2'232024: 53 km2'242025: 56 km2'2592 km2

Detected area per year, km². Area of 0.01° cells with at least one detection in the year.

The busiest year was 2017, with 92 km² detected; the quietest was 2021, with 47 km². The 2021–2025 average is 19% lower than the 2012–2016 average.

Through the year

January: 3.5%JFebruary: 5.0%FMarch: 9.4%MApril: 10%AMay: 10%MJune: 12%JJuly: 12%JAugust: 12%ASeptember: 12%SOctober: 7.5%ONovember: 3.8%NDecember: 1.8%D12%

Share of all fire-days 2012–2025 by month. A fire-day is one cell with a detection on one day.

June, July and August together hold 37% of the fire-days in the record. The single busiest day was 2 August 2017, with detections in 28 cells.

Ground that burns again

Of the 556 km² with at least one detection, 12% had detections in three or more different years.

Years with a detectionkm²Share
1 year42777%
2 years6211%
3 to 5 years407.1%
6 to 10 years193.4%
11 years or more8.41.5%

The half-degree square with the most fire-days is centred at 47.25, 8.25 and holds 45% of the country's fire-days.

The figures

Show the table
YearDetected km²Fire-days
201278392
201376339
201457435
201563470
201666414
201792466
201890496
201972421
202074454
202147407
202267458
202352336
202453268
202556322

Nearby countries

Detected area counts every 0.01° cell with at least one VIIRS detection, so a small fire counts as a whole cell and a fire missed by cloud or between passes is absent. Borders: Natural Earth 1:10m. 2012 begins on 20 January.

Nearby countries

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Wildfires in Switzerland

What sits behind each of these fires

Attached to every fire in the list above, and redrawn hourly.

What is actually burning
What is actually burningThe ESA WorldCover class under every detection, read at 10 m. Forest, cropland, shrub or built-up, named rather than guessed.
Has this ground burned before
Has this ground burned beforeEvery fire is checked against an archive back to 2012, which answers with the years this same ground burned.
Alerts that stay quiet
Alerts that stay quietA fire must miss two passes before we say it stopped and grow by more than half again before we say it spread. Nothing is said twice.