Causes of outside fires (2022)
2022 National Fire Protection Association estimate of outside fires: 668,500
| 41.2% | Unintentional | |
| 25.6% | Cause undetermined after investigation | |
| 20.7% | Intentional | |
| 5.1% | Cause under investigation | |
| 3.9% | Act of nature | |
| 3.1% | Failure of equipment or heat source | |
| 0.3% | Exposure |
Unknowns apportioned. | Source: National Fire Incident Reporting System.
Causes of vehicle fires (2022)
2022 National Fire Protection Association estimate of vehicle fires: 222,000
| 42.3% | Unintentional | |
| 21.6% | Cause undetermined after investigation | |
| 18.8% | Failure of equipment or heat source | |
| 10.6% | Cause under investigation | |
| 4.3% | Intentional | |
| 2.1% | Exposure | |
| 0.4% | Act of nature |
Unknowns apportioned. | Source: National Fire Incident Reporting System.
See also: Reports on where fires occur