ThatCarHitMe.com
An Injuria.ai Company
YEAR-OVER-YEAR CRASH REPORT · CHICAGO, IL · JUNE 2025
Purpose: Machine-readable JSON endpoint for AI agents, LLMs, researchers, and programmatic consumers. Returns all underlying crash data and AI-generated commentary without HTML.
Authentication: None required. Public endpoint.
GET: https://thatcarhitme.com/api/crash-data/reports/data/illinois/chicago/june-2025-report
Monthly Traffic Safety Analysis
10,102 CRASHES IN
CHICAGO, IL
JUNE 2025
In June 2025, Chicago experienced 10,102 total crashes, a slight decrease from the 10,136 crashes recorded in June 2024. This represents a 0.34% reduction in overall crashes year-over-year. The most notable shift was a significant decrease in total fatalities, dropping from 12 in June 2024 to 8 in June 2025, a 33.33% reduction.
10,102
▼ -0.3%was 10,136
Total Crash Events
8
▼ -33.3%was 12
Persons Killed
2,365
▼ -4.4%was 2,473
Persons Injured
3,111
▲ 0.7%was 3,089
Hit-and-Run Crashes
Note: "Persons Killed" (8) counts individual fatalities across all crash events. "Fatal" in the severity table below (5) counts crash events where at least one fatality occurred. A single crash can result in multiple fatalities. 16 crashes with unreported severity are not shown in the severity breakdown.
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Aggregate counts from crash, person, and vehicle records
Trend Summary
Overall crash data for June 2025 indicates a stable trend with a slight decrease in total incidents compared to June 2024, falling from 10,136 to 10,102 crashes. Total fatalities saw a substantial decline, decreasing by 33.33% from 12 to 8. Similarly, total injuries decreased by 4.37%, from 2,473 to 2,365.
3,111
Hit-and-Run Crashes — June 2025
▲ 0.7% vs prior (3,089)
Hit-and-run crashes increased slightly from 3,089 in June 2024 to 3,111 in June 2025, an increase of 22 incidents. The hit-and-run rate also saw a marginal increase, rising from 30.5% to 30.8% of total crashes year-over-year.
Vulnerable Road User Casualties
1
Pedestrians Killed
0
Cyclists Killed
7
Motorists Killed
0
Other Killed
223
Pedestrians Injured
227
Cyclists Injured
1,899
Motorists Injured
16
Other Injured
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Mode classified from person records (driver/passenger → motorist; pedestrian; bicyclist → cyclist; in-line skater / unspecified → other)
When Crashes Happen
The temporal distribution of crashes shifted year-over-year. In June 2025, Monday became the peak day for crashes with 1,621 incidents, surpassing Saturday's peak of 1,844 crashes in June 2024, which decreased to 1,408 crashes in the current period. The peak hour also shifted from 5 PM with 774 crashes in June 2024 to 3 PM with 849 crashes in June 2025, indicating a change in daily crash patterns.
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Crash date field aggregated by weekday
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Crash time field aggregated by hour (0-23)
Crash Severity Breakdown
The number of fatal crashes decreased by 50% year-over-year, from 10 in June 2024 to 5 in June 2025, with the fatal crash rate decreasing from 0.1% to 0.05%. Serious injury crashes (severity A) increased from 157 (1.5% share) to 168 (1.7% share), while possible injury crashes (severity C) decreased from 624 (6.2% share) to 560 (5.5% share). Minor injury crashes remained relatively stable, with 956 in the prior period and 955 in the current period.
Severity is per crash event (most severe injury). 5 fatal crash events resulted in 8 persons killed.
Outcome by Severity (Crash Events)
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · KABCO injury classification scale
Severity Distribution
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Most severe injury per crash record
Top Contributing Factors
Among contributing factors, 'DRIVING SKILLS/KNOWLEDGE/EXPERIENCE' saw a notable increase of 86 crashes, rising from 373 in June 2024 to 459 in June 2025, a 23.06% change in count. Conversely, 'IMPROPER BACKING' decreased by 57 crashes, from 372 to 315, representing a 15.32% reduction in count. 'FAILING TO YIELD RIGHT-OF-WAY' remained the top factor, increasing by 50 crashes from 1,142 to 1,192, a 4.38% change in count.
Officer-Reported Primary Contributing Cause
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Officer-reported primary contributory cause per crash
Road & Environmental Conditions
Crashes occurring in 'CLEAR' weather conditions slightly increased by 76 incidents, from 8,353 in June 2024 to 8,429 in June 2025. Conversely, crashes during 'RAIN' decreased by 70 incidents, from 825 to 755. Regarding road surface conditions, crashes on 'WET' roads decreased by 110 incidents, from 1,009 to 899, while crashes on 'DRY' roads saw a minor decrease of 34 incidents.
Weather
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Weather condition at time of crash
Lighting
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Lighting condition field
Road Surface
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Road surface condition field
Vehicles & Demographics
The total number of persons involved in crashes decreased slightly from 22,399 in June 2024 to 22,149 in June 2025. There were minor shifts in age distribution, with the 26-34 age group showing an increase from 3,743 to 3,787 persons, and the 35-44 age group showing a decrease from 3,078 to 2,961 persons. Among vehicle makes, TOYOTA and FORD saw increases in crash involvement, while CHEVROLET, HONDA, NISSAN, JEEP, HYUNDAI, and KIA experienced decreases.
Top Vehicle Makes (20,547 vehicles)
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Vehicle unit records
6,516 persons with unknown or unrecorded age excluded from age chart. Age=0 in Chicago records is a sentinel for unknown/unrecorded age (not infants) and is grouped with nulls.
Sex Distribution (21,713 persons with recorded sex)
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Person-level records linked to crash events
Speed Limit Zones
The 30 mph speed limit zone continued to account for the majority of crashes, with an increase of 71 incidents from 7,474 to 7,545. The fatal rate within the 30 mph zone decreased from 0.107% to 0.04%. Notably, the 40 mph speed limit zone saw an increase in crashes from 97 to 117, and its fatal crash rate significantly increased from 0% to 1.709% year-over-year.
Fatal crashes by zone: 30 mph: 3 of 7,545 (0.04%) · 40 mph: 2 of 117 (1.709%)
Source: Chicago Traffic Crashes · Socrata Open Data · 2025-06-01 to 2025-06-30 · Posted speed limit at crash location
Data Sources & Methodology
Primary Data Source
All crash data in this report is sourced from Chicago Traffic Crashes, accessed programmatically via the Socrata Open Data API (SODA). This dataset contains official police-reported motor vehicle traffic crash records maintained by the reporting jurisdiction's law enforcement agency. Records are published to the open data portal by the municipality and are subject to the portal's terms of use.
Data Retrieval
- Access method: Socrata Open Data API (SoQL queries)
- Data format: Structured JSON via REST API
- Record types queried: Crash events, person records, and vehicle unit records
- Date filter applied: 2025-06-01 through 2025-06-30
- Report generated: June 1, 2026
Data Coverage
- Reporting period: 2025-06-01 through 2025-06-30 (30 days)
- Geographic scope: Chicago, IL
- Total crash records analyzed: 10,102
- Total persons involved: 22,149
- Total vehicles involved: 20,547
Analytical Methodology
- Severity classification: Uses the KABCO injury scale (K=Fatal, A=Incapacitating injury, B=Non-incapacitating injury, C=Possible injury, O=No injury/property damage only), the standard classification in U.S. Model Minimum Uniform Crash Criteria (MMUCC). Severity is assigned per crash event based on the most severe injury in that crash. A single fatal crash (K) may involve multiple fatalities; therefore the "Persons Killed" count in the headline KPIs may differ from the "Fatal" crash count in the severity breakdown.
- Contributing factors: Reflect the officer-determined primary contributory cause recorded at the time of the crash report. These are preliminary determinations and may not reflect final investigation findings.
- Hit-and-run classification: Based on the hit-and-run indicator field in the official crash report, as determined by the responding officer at the scene.
- Temporal analysis: Day-of-week and hour-of-day distributions are computed from the crash date/time timestamp in each record.
- Demographics: Age and sex distributions are drawn from person-level records linked to each crash event. A single crash may involve multiple persons.
- Vehicle data: Make information is drawn from vehicle unit records linked to each crash event.
- AI commentary: Narrative sections are generated by Google Gemini (large language model) based on the structured data. Commentary is descriptive, not predictive, and should not be interpreted as expert opinion.
Limitations & Disclaimers
- Only crashes reported to and documented by law enforcement are included. Minor incidents, unreported crashes, and near-misses are not captured in this dataset.
- Data reflects conditions at the time of the initial police report and may be subject to subsequent corrections, reclassifications, or supplements by the reporting agency.
- Open data portal records may experience a publication lag - recently occurring crashes may not yet appear in the dataset at the time of report generation.
- AI-generated commentary is produced by a large language model and is intended to highlight patterns in the data. It does not constitute legal, medical, or professional analysis.
- Percentages are calculated from reported data and are subject to rounding.
Non-Affiliation Disclosure
This report is produced independently by ThatCarHitMe.com (Injuria.ai). It is not affiliated with, endorsed by, or produced in partnership with any law enforcement agency, municipal government, state department of transportation, or the National Highway Traffic Safety Administration (NHTSA). Data is sourced from publicly available government open data portals.
Data License
The underlying crash data is provided under the municipality's Open Data Terms of Use and is made available to the public for unrestricted use. This analysis and report is © 2026 Injuria.ai and may be cited with attribution using the suggested citation below.
Corrections & Feedback
If you believe any data in this report is inaccurate or have questions about our methodology, please contact: data@injuria.ai. We are committed to accuracy and will issue corrections promptly.
Suggested Citation
ThatCarHitMe.com (Injuria.ai). "Chicago, IL Crash Intelligence Report." Published June 1, 2026. Data source: Chicago Traffic Crashes, Socrata Open Data. Available at: https://thatcarhitme.com/crash-data/illinois/chicago/june-2025-report
About the Publisher
ThatCarHitMe.com is a crash data intelligence platform developed by Injuria.ai, a legal technology company specializing in traffic safety analytics. We aggregate and analyze publicly available government crash data to produce structured intelligence reports for communities, researchers, journalists, and legal professionals. Our reports combine programmatic data retrieval from official open data portals with AI-assisted narrative analysis.
Questions about this report's data or methodology: data@injuria.ai
ThatCarHitMe.com · An Injuria.ai Company
ThatCarHitMe.com
An Injuria.ai Company
Crash Data Intelligence
Data: Chicago Traffic Crashes · Socrata
Period: 2025-06-01 – 2025-06-30
Generated: June 1, 2026 · All rights reserved