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Oak Brook, IL hail — 27 Jul 2026 recap
Storm date 27 Jul 2026 (CDT). 10 reports ≥1.25 in near town. Max 2.50 in (tennis ball). Heading/path: SSW.
On 27 Jul 2026, thunderstorms produced hail up to 2.50 in (tennis ball) at Oak Brook, IL. 10 hail reports of 1.25 in or larger were logged near Oak Brook centroid, at 11:54 a.m. CDT and 12:18 p.m. CDT. Hail fell on or next to the town street grid (NNW of the town centroid; NW of the town centroid; SSE of the town centroid). Largest: 2.50 in at 1 WNW Westmont (12:18 p.m. CDT); 2.00 in at Clarendon Hills (11:56 a.m. CDT); 2.00 in at 1 NW Clarendon Hills (12:04 p.m. CDT). This meets HailDataHub in-town qualify (2+ stones ≥1.25 in near the place centroid), not a rural offset or a single-report pin. Storm motion from the timed reports was toward the SSW. Chasers and PDR/roof crews tracking the swath would treat Oak Brook as an in-town hit. Population is 8,056. Not a damage certificate. Not insurance.
Town
Population: 8,056 (MOE ±32) — Oak Brook, IL.
Median household income: $175,870 (MOE ±13,613).
Primary industry / how people make a living (ACS employment by industry): Educational services, health care, and social assistance (33%); Professional, scientific, management, administrative, and waste management (18%).
Median age: 55.2 (MOE ±2.3).
Hail reports
| Local time | Location | Size | Object | Miles |
|---|---|---|---|---|
| 11:54 a.m. CDT | Oak Brook DuPage County, IL | 1.75 in | golf ball | 0.78 mi |
| 11:54 a.m. CDT | 1 N Oakbrook Terrace DuPage County, IL | 1.50 in | ping pong | 2.19 mi |
| 11:56 a.m. CDT | Clarendon Hills DuPage County, IL | 2.00 in | hen egg | 3.01 mi |
| 11:56 a.m. CDT | Hinsdale DuPage County, IL | 1.75 in | golf ball | 2.45 mi |
| 11:59 a.m. CDT | 1 NW Westmont DuPage County, IL | 1.75 in | golf ball | 3.11 mi |
| 12:00 p.m. CDT | 1 NE Downers Grove DuPage County, IL | 1.50 in | ping pong | 3.09 mi |
| 12:04 p.m. CDT | 1 NW Clarendon Hills DuPage County, IL | 2.00 in | hen egg | 2.52 mi |
| 12:08 p.m. CDT | Oak Brook DuPage County, IL | 2.00 in | hen egg | 0.20 mi |
| 12:10 p.m. CDT | Hinsdale DuPage County, IL | 2.00 in | hen egg | 2.45 mi |
| 12:18 p.m. CDT | 1 WNW Westmont DuPage County, IL | 2.50 in | tennis ball | 3.11 mi |
Town map
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