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US · United States · Colorado

Wildfires in Boulder

Boulder, United States, has had 2 fires with an official perimeter since 2020: 6,537 hectares burned inside the county, 3.4% of its area. Fire danger today: very low (FWI 4).

Only fires of 400 ha or more get an entry: smaller ones are not in the lists or the totals on this page.

Fire danger, today and the coming days

FWI computed from the Open-Meteo forecast
  1. Sun 25 Low 11° · 57 % · 30 km/h
  2. Mon 26 Very low 12° · 54 % · 28 km/h
  3. Tue 27 Low 16° · 26 % · 22 km/h
  4. Wed 28 Moderate 18° · 20 % · 32 km/h
  5. Thu 29 Moderate 17° · 24 % · 25 km/h
  6. Fri 30 Moderate 18° · 26 % · 30 km/h
  7. Sat 31 Moderate 17° · 42 % · 30 km/h
  8. Sun 1 Moderate 13° · 51 % · 22 km/h

Canadian Fire Weather Index, the same system Copernicus uses, computed by WorldFires from the weather forecast and two months of past weather for fuel state. It is an estimate per municipality, not an official warning: warnings are issued by each country’s emergency service.

The county and its fires

Since 2016

6,537
hectares burned
3.4 %
of the county
2
fires
1,920
km²

How many times has Boulder burned?

Boulder has burned 2 times since 2016, in 2 years: 2020 and 2021. The most recent: Marshall Fire, December 2021, with 2,545 hectares inside the municipality.

  1.   16
  2.   17
  3.   18
  4.   19
  5. 1× 20
  6. 1× 21
  7.   22
  8.   23
  9.   24
  10.   25
  11.   26
2
fires
2
years with fire
6,537
cumulative ha
30 Dec 2021
most recent

Fires larger than 400 hectares with a perimeter since 2016 that reached the municipality, even partly. Cumulative hectares add up every fire; the distinct area counts land that burned several times only once. Perimeters and boundaries overlaid by WorldFires.

Where it has burned most often in United States →

Fires that entered Boulder

  1. 2,545 ha Marshall Fire, December 2021 where it started 1.3% of the county · 2,550 ha in total · 2 days
  2. 3,992 ha Calwood Fire, October 2020 where it started 2.1% of the county · 3,979 ha in total · 4 days

Where this data comes from

Perimeters are official, from MTBS (USGS and USDA Forest Service) and NIFC, in the public domain; county boundaries come from geoBoundaries/United States Census Bureau, MAF/TIGER Database (Public Domain). The area per county is computed by WorldFires by crossing both. The forecast is from Open-Meteo (CC BY 4.0).

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