How big was the hail on July 28, 2025?

The maximum estimated stone size anywhere in Illinois that day was 1.00 inches. Sizes vary street to street inside a single swath, so a city's figure is the largest radar estimated anywhere within about 5 miles of it.

Does this mean roofs were damaged?

Radar measures stone size, not damage. Whether a particular roof was damaged depends on stone size, wind direction, roof age and material — only an inspection settles it. These figures tell you where it is worth looking.

How do I see the actual swath on a map?

A HailMate plan puts the whole of Illinois on a real interactive map with this swath and three years of others already on it. $79/mo, and the canvassing tools come with it.

Illinois · July 28, 2025

Illinois hail map — July 28, 2025

Name: Illinois hail map — July 28, 2025
Creator: HailMate

NOAA radar detected hail of an inch or more over 19 Illinois cities on July 28, 2025. The largest stones — 1.00″, quarter size — fell over Oak Lawn.

Hail swath map for Oak Lawn, IL on July 28, 2025 showing 1.00 inch hail. — Swath over Oak Lawn on July 28, 2025 — 1.00″ hail. Each city below has its own map for this storm.

Cities hit: 19; in Illinois
Largest stone: 1.00″; quarter size
Impact rating: 3/10; from stone size

Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.

Roofing contractors

Work Illinois on the live hail map

HailMate's canvassing map: hail swaths colour-banded by stone size, from yellow through red to purple, laid over a satellite view of a Texas territory, with hail swath and territory controls.

All of Illinois at street level, with this storm already on it
Three years of hail swaths, filterable by stone size
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Homeowners

Did hail hit your address?

This page covers Illinois as a whole. Check your own address to see every storm on record for your roof — the date and the stone size for each one — and we'll email you the full report to keep.

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Free, and no account needed to look it up. If hail did hit, you can ask for a free inspection from a vetted local roofer.

Illinois cities hit on July 28, 2025

Other states hit on July 28, 2025

Montana1 city · 1.50″Iowa1 city · 1.00″North Dakota1 city · 1.00″Minnesota1 city · 1.00″Michigan1 city · 1.00″

The full US hail map for July 28, 2025 →

Other Illinois hail days

August 13, 20263 cities · 1.00″August 11, 20263 cities · 1.00″August 9, 202640 cities · 1.50″July 27, 2026127 cities · 2.00″July 10, 20262 cities · 1.00″July 4, 20261 city · 1.50″July 3, 202618 cities · 1.00″July 2, 202614 cities · 1.00″June 24, 202614 cities · 1.50″June 17, 20264 cities · 2.00″June 11, 20261 city · 1.00″June 10, 202614 cities · 1.00″

Every hail day across Illinois →

FAQ

Illinois hail on July 28, 2025

NOAA radar put hail of an inch or more over 19 Illinois cities that day. The largest stones — 1.00 inches, quarter size — were over Oak Lawn. Every city hit is listed above with its own stone size.

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