Ping pong-sized hail detected near Naperville, IL on July 2, 2026

Damage assessment

The radar-confirmed strike centered approximately 10 miles northwest of downtown Naperville, with one hail report logged across DuPage County that day. At 1.5 inches, hail routinely causes functional damage to standard architectural asphalt shingles — the material that dominates Naperville's housing stock. Shingles lose granules at this size, compromising the weathering layer and shortening remaining service life, though visible impact craters may be subtle. Roofs older than 15 years are more vulnerable; a roof already near end-of-life may cross the threshold from repairable to full replacement. The largest event on record for this area was 2.75 inches in April 2020, which is a different category of damage than today's event.

Naperville repair cost reference

Historical context

This event ranks 26th of 111 hail events measuring 1 inch or larger recorded in the area over the past 10 years, placing it in the middle tier by magnitude. The largest event on record for DuPage County reached 2.75 inches on April 8, 2020. July historically produces about 16 hail events per decade in this county, which is above average — though April remains the peak month at 38 events over the same period.

Storm system

This was not an isolated cell. The same system produced 1.5-inch hail in Kane County, 1.25-inch hail in Cook County, and 2.25-inch hail in Dane County, Wisconsin — indicating a broad line of hail-capable storms across the region that day.

Contractor guidance

Local contractor data shows current backlogs running 2 to 4 weeks in the Naperville market. The intake assessment rates storm chaser risk as moderate — Naperville draws out-of-area contractors after regional events, and that gap is where problems tend to start. Illinois requires roofing contractors to hold a state license under the Roofing Industry Licensing Act (225 ILCS 335), carry general liability and workers' compensation insurance, and post a surety bond. Verify license status through the IDFPR public database before signing anything, and know that any contractor offering to cover your deductible is violating Illinois law — that offer alone is reason to walk away.

Permits & building code

At 1.5 inches, outcomes split between repair and full replacement depending on roof age and existing condition — an inspection determines which applies. DuPage County requires a permit for roofing work; the contractor pulls it, cost runs $150 to $350, and an inspection is required before the job closes. Class 4 impact-resistant shingles qualify for a 10–20% discount with most Illinois insurers.