SwathIQ / Hail map / Illinois

Illinois Hail Map & History

Illinois sees damaging hail from central Springfield and Peoria up through the Chicago collar counties. Pick a date below to see the NOAA radar swath and reports, or check a specific address.

543

hail days since 2010

118

days with 2″+ hail

hail days this year

6.10″

largest stone on record

Illinois storm date

Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Illinois. Radar-indicated, not a guarantee of damage.

Working Illinois? Turn a storm into a route.

A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls Illinois addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.

Get free access Check an address

Hail history in Illinois

Since 2010, NOAA's Storm Prediction Center has logged 543 separate hail days in Illinois, including 118 days with hail 2″ or larger -- the size that routinely totals roofs. The largest stone on record here: 6.10″ on 2026-03-10 near 1 SSE Kankakee, Kankakee. The most recent reported hail day was 2026-06-11. Major metros watched here: Chicago, Springfield, Peoria, Rockford.

Top Illinois counties by hail frequency

County	Hail days since 2010	Largest stone
COOK	59	2.75″
WILL	43	2.75″
MADISON	42	3.00″
ST. CLAIR	38	3.00″
ADAMS	37	4.50″
KANE	37	2.50″

Recent Illinois hail days

Date	Max hail	Reports
2026-06-11	1.75″	4
2026-06-10	1.25″	2
2026-05-18	1.00″	1
2026-05-16	1.75″	5
2026-05-04	2.00″	18
2026-05-03	2.00″	10
2026-04-27	2.50″	55
2026-04-26	1.75″	4

How to read the Illinois map

The colored swath is NOAA's MRMS radar estimate of the largest hail in each ~1 km cell; the dots are individual SPC ground reports. Yellow is around an inch, red is 1.5 to 2″, and purple is 2″ and up -- see how hail size maps to roof damage. Click any spot on the map to see the hail history at that point, or look up a full street address on the hail history by address tool. Today's nationwide activity is on today's hail report.

Nearby states

North Dakota · Arkansas · New Mexico · Wyoming · North Carolina · Georgia

FAQ

How often does it hail in Illinois?

NOAA has logged 543 hail days in Illinois since 2010, including 118 days with 2″+ hail.

Is the Illinois hail map free?

Yes, no login. A free account adds door-knock address lists and CRM exports.

How far back does the data go?

NOAA SPC storm reports since 2010, with high-resolution MRMS radar swaths for recent storms.

Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, Illinois only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.