How long did the Basin fire last?

It burned between 5 June 2025 and 5 June 2025: 1 day, according to the start date recorded by United States agencies (MTBS / NIFC) and the heat detections seen by satellite.

How much area did it burn?

The official perimeter published by United States agencies (MTBS / NIFC) is 3,701 hectares (37.0 km²). Other tallies, such as daily incident reports, may give slightly different figures.

Which counties burned?

The fire only entered Coconino (3,704 ha, 0.1 %).

What was the weather like?

During the fire the temperature reached 31.9 °C, humidity dropped to 4 % and gusts hit 67 km/h. The fire danger index (FWI) reached 70, class Very extreme.

Where does this data come from?

From the official burnt perimeter of United States agencies (MTBS / NIFC, public domain), NASA FIRMS VIIRS hotspots and the administrative boundaries of United States. It is not an official report.

US · United States · 2025-06-05 → 2025-06-05

Basin Fire, June 2025 Coconino

Out · last measured on 5 Jun 2025

The fire started on 5 June 2025 in Coconino, United States, and satellites saw it burning for 1 day. United States agencies (MTBS / NIFC) mapped an official burnt perimeter of 3,701 hectares, spread across a single county.

It is the 90th largest in Arizona since 2016 (of 380 with a page). Number 96 in United States in 2025, of 327.

Burnt area: 3,701ha; official perimeter (MTBS / NIFC)
Duration: 1day; 5 Jun 2025 – 5 Jun 2025
Municipalities hit: 1; counties
Started on: 5 Jun; 2025
Heat detections: 252; in a single hotspot: 116 MW
Danger at start: 0; Very low · FWI index

HOTSPOTS BY DAY 5 Jun5 Jun

The weather it burned in

32°high

67km/h · peak gust

4%lowest humidity

It had gone 0 days without rain (1 mm or more) when it started. Rain came after the fire: 1.4 mm on 29 Jun.

This area had burned before

46% of the perimeter overlaps earlier fires recorded since 2016: 1,708 ha in 2017, 7 ha in 2021.

What happened to each town

Coconino where it started

3,704 ha reached on 9 Jun

0.1 %

Burnt area inside each county, from crossing the official perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.

The weather day by day

ECMWF ERA5 reanalysis at the fire location, the standard reference for past weather, and the Canadian Fire Weather Index (the same system Copernicus uses), computed by WorldFires from that data. Days after the fire run until the first rain.

Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)

Day	High	Min. humidity	Peak gust	Rain	Danger (FWI)
5 Jun	18.9 °C	44 %	22 km/h	1.5 mm	Very low 0
6 Jun after	22.4 °C	29 %	23 km/h	0.1 mm	Very low 4
7 Jun after	25.1 °C	20 %	21 km/h	0.0 mm	Moderate 13
8 Jun after	25.9 °C	17 %	22 km/h	0.0 mm	Moderate 18
9 Jun after	26.9 °C	16 %	32 km/h	0.2 mm	Moderate 19
10 Jun after	28.0 °C	13 %	36 km/h	0.0 mm	High 26
11 Jun after	29.1 °C	10 %	50 km/h	0.0 mm	High 36
12 Jun after	28.7 °C	9 %	58 km/h	0.0 mm	Very high 42
13 Jun after	28.3 °C	9 %	49 km/h	0.0 mm	Very high 39
14 Jun after	30.4 °C	7 %	40 km/h	0.0 mm	Very high 39
15 Jun after	31.9 °C	4 %	43 km/h	0.0 mm	Very high 44
16 Jun after	31.3 °C	5 %	60 km/h	0.0 mm	Extreme 59
17 Jun after	30.1 °C	5 %	55 km/h	0.0 mm	Extreme 58
18 Jun after	31.0 °C	8 %	35 km/h	0.0 mm	Very high 46
19 Jun after	31.5 °C	7 %	57 km/h	0.0 mm	Extreme 64
20 Jun after	28.9 °C	6 %	67 km/h	0.0 mm	Very extreme 70
21 Jun after	26.2 °C	11 %	73 km/h	0.0 mm	Very extreme 71
22 Jun after	24.5 °C	11 %	57 km/h	0.0 mm	Extreme 57
23 Jun after	25.5 °C	11 %	50 km/h	0.0 mm	Extreme 52
24 Jun after	25.1 °C	8 %	49 km/h	0.0 mm	Extreme 53
25 Jun after	26.0 °C	6 %	36 km/h	0.0 mm	Very high 45
26 Jun after	27.3 °C	9 %	40 km/h	0.0 mm	Very high 49
27 Jun after	28.1 °C	11 %	45 km/h	0.1 mm	Extreme 55
28 Jun after	29.5 °C	10 %	44 km/h	0.0 mm	Extreme 56
29 Jun after	30.5 °C	12 %	35 km/h	1.4 mm	High 34

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

↔

Before · 29 May 2025

After · 12 Jun 2025

Before After

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

The smoke

CAMS · Copernicus

On 3 June 2025 the air beside the fire reached 11 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak11 µg/m³

Days over the guideline0 days

PM1030 µg/m³

Optical depth0.25

345678

Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 252Every satellite heat detection, one by one, with time, satellite, power and coordinates.

⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.

Date and time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in United States ›

Frequently asked questions

How long did the Basin fire last?: It burned between 5 June 2025 and 5 June 2025: 1 day, according to the start date recorded by United States agencies (MTBS / NIFC) and the heat detections seen by satellite.
How much area did it burn?: The official perimeter published by United States agencies (MTBS / NIFC) is 3,701 hectares (37.0 km²). Other tallies, such as daily incident reports, may give slightly different figures.
Which counties burned?: The fire only entered Coconino (3,704 ha, 0.1 %).
What was the weather like?: During the fire the temperature reached 31.9 °C, humidity dropped to 4 % and gusts hit 67 km/h. The fire danger index (FWI) reached 70, class Very extreme.
Where does this data come from?: From the official burnt perimeter of United States agencies (MTBS / NIFC, public domain), NASA FIRMS VIIRS hotspots and the administrative boundaries of United States. It is not an official report.

Where to verify it

A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.

Emergency number: 911

Satellite cross-check

NASA FIRMS ↗
NIFC · Fire maps ↗

Does something look wrong on this page?

This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.

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Where this data comes from

The perimeter is official and in the public domain. For past years it comes from MTBS (Monitoring Trends in Burn Severity), run by the U.S. Geological Survey and the USDA Forest Service, which map it on Landsat and Sentinel-2 imagery. For the current and last year it comes from WFIGS at the National Interagency Fire Center (NIFC): incident perimeters mapped by fire crews, aircraft and imagery. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. County boundaries come from geoBoundaries ADM2 (Public Domain). The area per county is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from official figures.

Where it burned