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2025 Annual Fire Report

Fires in Thermal, California

In 2025, fire departments serving Thermal responded to 163 fire and hazmat incidents — from cooking fires to gas leaks to a single $2.0M building blaze. Here's the full picture.

Updated Sep 27, 2026 Grade C- Peak yr 2025 Riverside County 1,352 residents 0 reporting departments 579 5-yr
Total incidents
163
+45.5% vs 2024
Building fires
10
Residential 60% Other 40%
Property loss
$6.0M
$3.3M structure · $2.7M contents
Deaths & injuries
0 / 0
0 civilian deaths · 0 civ injuries · 0 firefighter injuries
01 The mix

What kinds of fires happen here?

Outside rubbish, trash or waste fire lead by count. Building fires lead by dollars. Together the top five categories make up about 57% of all calls.

163
Total Incidents
Outside rubbish, trash or waste fire 43 26.4%
Brush, or brush and grass mixture fire 23 14.1%
Passenger vehicle fire 11 6.7%
Building fires 10 6.1%
Fire, other 6 3.7%
All other categories 70 42.9%
02 Seasonality

When do fires happen?

Apr peaks. Sep dips. Watch for the typical fall climb starting in October.

Jan 21
Feb 14
Mar 15
Apr 25
May 20
Jun 13
Jul 10
Aug 11
Sep 4
Oct 15
Nov 5
Dec 10
Fewer
More
2b Five-year trend

Year over year in Thermal

579 incidents 2021–2025. Peak year was 2025. $7.4M cumulative property loss.

YearIncidentsYoY 
2021 105 —
2022 98 -6.7%
2023 101 +3.1%
2024 112 +10.9%
2025 163 +45.5%
03 Cause of ignition

What sparks building fires?

For the 10 building fires Thermal departments responded to in 2025, here's how they were classified once investigators were finished.

Unintentional
12%
10
Cause undetermined
61%
49
Intentional / arson
16%
13
Equipment / heat source failure
5%
4
Under investigation
4%
3
Act of nature (lightning)
2%
1
3b Where fires start

Where do fires start in Thermal?

NFIRS Area of Origin (AREA_ORIG) for the 294 building fires investigators classified across 2021–2025. The room or location where ignition occurred — kitchens, bedrooms, exterior, vehicle areas — tells you where to focus prevention.

#Area of originCountShare 
1 Undetermined 84 28.6%
2 Open area - outside; included are farmland, field 50 17.0%
3 Engine area, running gear, wheel area 43 14.6%
4 Outside area, other 34 11.6%
5 Vehicle area, other 13 4.4%
6 Other 10 3.4%
7 Structural area, other 7 2.4%
8 Common room, den, family room, living room, lounge 5 1.7%
9 Cooking area, kitchen 5 1.7%
10 Cargo/trunk area - all vehicles 4 1.4%
11 All other areas 39 13.3%
3c What ignited it

What actually ignited the fire?

NFIRS Heat Source (HEAT_SOURC) — the physical thing that started it. Spark or ember from operating equipment, an open flame, smoking materials, or hot embers from a fireplace are the leading culprits nationwide. Here's the Thermal mix.

#Heat sourceCountShare 
1 Undetermined 167 56.8%
2 Cigarette lighter 21 7.1%
3 Arcing 20 6.8%
4 Heat from powered equipment, other 18 6.1%
5 Radiated, conducted heat from operating equipment 12 4.1%
6 Heat source: other 10 3.4%
7 Hot or smoldering object, other 9 3.1%
8 Multiple heat sources including multiple ignitions 7 2.4%
9 Flame/torch used for lighting 4 1.4%
10 Chemical reaction 4 1.4%
11 All other sources 22 7.5%
04 The biggest fires

8 fires · $3.0M in losses

Largest single-incident property losses reported by Thermal departments in 2025. These 8 fires alone account for 91% of the city's annual total.

# Property loss Type Severity Status
1 $2,000,000 Building fires Major Investigated
2 $275,000 Building fires Major Investigated
3 $200,000 Building fires Significant Investigated
4 $125,000 Building fires Significant Investigated
5 $100,000 Building fires Significant Investigated
6 $100,000 Road freight or transport vehicle fire Significant Investigated
7 $100,000 Building fires Significant Investigated
8 $85,000 Building fires Significant Investigated
05 How Thermal compares

Thermal vs California vs the nation

Per-capita rates let us compare apples to apples. Thermal sits above the national average for incidents per resident.

120.56
Incidents per 1,000 residents
Thermal
120.56
CA avg
5.32
US avg
7.48
7.4
Building fires per 1,000 residents
Thermal
7.4
CA avg
0.32
US avg
0.85
0
Civilian fire deaths per million
Thermal
0
CA avg
2.9
US avg
5.9
5b Who gets hurt

Casualty demographics in Thermal

5 fire-related casualties recorded in NFIRS Module 11 across the 2021–2025 window. Age, gender, and severity are coarse-binned — no individual identification possible.

AgeCount 
0-9 0
10-19 0
20-29 2
30-39 1
40-49 0
50-59 0
60-69 0
70-79 2
80+ 0
Civilian vs firefighter
Civilian 3 FF 2
Gender
M 5 F 0 Unk 0
Severity (1=minor → 5=fatal)
2
1
1
2
1
3
1
4
0
5
5c Wildfires nearby

Wildfires within 50 mi of Thermal

Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 500,098 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.

50 mi radius
YearCauseAcresDistance 
2006 Natural 61,700 42.0 mi
2002 Equipment and vehicle use 61,690 44.3 mi
2007 Other causes 49,390 48.8 mi
2006 Arson/incendiarism 40,200 41.1 mi
1998 Missing data/not specified/undetermined 28,164 46.5 mi
2013 Power generation/transmission/distribution 27,531 34.8 mi
1995 Equipment and vehicle use 23,455 39.3 mi
1994 Natural 20,901 21.7 mi
2013 Missing data/not specified/undetermined 20,292 47.3 mi
2003 Natural 19,575 37.8 mi
2011 Arson/incendiarism 14,100 33.4 mi
1999 Natural 14,000 27.7 mi
5d Top ZIPs

Where in Thermal do fires concentrate?

Top 9 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.

#ZIP5-yr incidents 
1 92274 561
2 92254 9
3 92262 3
4 92001 1
5 92236 1
6 92241 1
7 92243 1
8 92554 1
9 92564 1
5e Peer cities

Cities similar to Thermal

Six California cities with population within ±25% of Thermal. Useful comparison targets — same state, similar size, different fire profile.

07 Stay prepared

Before the next Red Flag day.

A 30-minute weekend can cut your home's exposure substantially. These four checklists are a good starting point.

About this data

Numbers reflect incidents reported by participating fire departments to the National Fire Incident Reporting System (NFIRS) Public Data Release for calendar year 2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Per-capita comparisons use 2023 ACS population estimates. Wildland fire data complements NFIRS with NIFC and USFS perimeters. Active-fire counts come from a dated NIFC snapshot, not a live feed.