DuPage County was hit as recently as 2026-07-28, 3 days ago. DuPage County has recorded hail in nearly every year on the archive. The largest stone on record here is 4.8 inches and 4.8 times the National Weather Service's 1 inch severe criterion, reported on 2026-03-10 near Darien.
Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports in Illinois. Radar-indicated, not a guarantee of damage.
The last hail here fell on 2026-07-28, around Oak Brook. A free SwathIQ account -- hand-reviewed, invite within 24-48h -- pulls DuPage County addresses inside a hail swath above your size threshold into a door-knock list you can export, scoped to your approved markets.
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See call-center options ->NOAA's Storm Prediction Center has logged 33 separate hail days here since 2010 -- 1.9 a year over 17 years of record. Those days carry 129 separate reports between them, better than three on a typical one. 2 of those 17 years produced none at all. The busiest single year was 2026, with 4 hail days. The last five years track the long-run rate, with 10 days since 2022.
5 of the 33 days reached 2 inches or more -- 15%, or about one hail day in 7, the last on 2026-07-28. Those big days do not follow the county's usual calendar: most of them fall in July, not May. 10 of the 33 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Illinois, see the Illinois hail map and history.
Reports cluster nearest Naperville -- 9 of the county's 33 hail days -- then Glen Ellyn (7), Woodridge (6), Carol Stream (6) and Downers Grove (5). Beyond those, NOAA names Wheaton, Aurora, Darien, Oak Brook, Warrenville, Bartlett, Lisle, West Chicago and Villa Park on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Naperville | 5 | 2.00″ |
| Woodridge | 4 | 2.50″ |
| Wheaton | 4 | 1.50″ |
| Glen Ellyn | 4 | 1.00″ |
| Darien | 3 | 4.80″ |
The season runs April through August: 28 of the 33 hail days on record fall in those 5 months (85%). May is the single busiest month, with 7 of them (21%). That peak sits inside the window rather than at either end. Hail has also been reported in February and March, outside that window. Reports span 7 of the 12 calendar months; the other 5 have never produced one.
| Month | Hail days |
|---|---|
| February | 1 |
| March | 4 |
| April | 5 |
| May | 7 |
| June | 4 |
| July | 6 |
| August | 6 |
That day put 1 report on the map, the biggest 2 inches near Oak Brook. 4 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-07-28 | 2.00″ | 1 |
| 2026-04-14 | 1.00″ | 2 |
| 2026-03-30 | 1.75″ | 9 |
| 2026-03-10 | 4.80″ | 19 |
| 2025-08-16 | 1.50″ | 2 |
| 2025-05-15 | 1.50″ | 6 |
| 2024-02-27 | 2.50″ | 8 |
| 2023-07-28 | 1.75″ | 8 |
The colored swath is NOAA's MRMS radar estimate of the largest hail per ~1 km cell; the dots are SPC ground reports. Yellow is about an inch, red 1.5 to 2″, purple 2″ and up (hail size vs roof damage). On this county's worst day the reports reached 4.8 inches, which is the purple band. Look up a street address with the hail history by address tool.
The nearest counties with a page of their own: Cook County (75 hail days), Kane County (43) and Will County (56). Every one of them takes more hail than DuPage County.
Cook County · Kane County · Will County
Back to the Illinois hail map or the U.S. hail map.
Data & method: NOAA/NWS Storm Prediction Center reports + NOAA MRMS MESH radar, DuPage County, Illinois only. Radar-indicated and observation-based -- informational only, not a guarantee of damage or a valid claim.