DuPage County, Illinois Hail Map & History
DuPage County was hit as recently as 2026-08-09, 36 days ago. DuPage County is hit in most years, and usually several times over. 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 2026-08-09, around Naperville. 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 ->How often it hails in DuPage County
NOAA's Storm Prediction Center has logged 35 separate hail days here since 2010 -- 2.1 a year over 17 years of record. Those days carry 157 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 6 hail days. The last five years track the long-run rate, with 12 days since 2022.
6 of the 35 days reached 2 inches or more -- 17%, or about one hail day in 6, 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. 11 of the 35 days reached golf-ball size, 1.75 inches or bigger.
Across the whole of Illinois, see the Illinois hail map and history.
Hardest-hit places in DuPage County
Reports cluster nearest Naperville -- 10 of the county's 35 hail days -- then Glen Ellyn (8), Carol Stream (7), Downers Grove (6) and Woodridge (6). Beyond those, NOAA names Wheaton, Darien, Oak Brook, Lisle, Aurora, Villa Park, Warrenville, Bartlett and West Chicago on more than one hail day apiece.
| Place | Hail days since 2010 | Largest stone |
|---|---|---|
| Naperville | 5 | 2.00″ |
| Darien | 4 | 4.80″ |
| Woodridge | 4 | 2.50″ |
| Wheaton | 4 | 1.50″ |
| Glen Ellyn | 4 | 1.00″ |
When it hails in DuPage County
The season runs April through August: 30 of the 35 hail days on record fall in those 5 months (86%). May is the single busiest month, with 7 of them (20%). 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 | 7 |
| August | 7 |
Recent DuPage County hail days
That day put 2 reports on the map, the biggest 1 inch near Naperville. 6 hail days have already been reported this year.
| Date | Max hail | Reports |
|---|---|---|
| 2026-08-09 | 1.00″ | 2 |
| 2026-07-28 | 2.00″ | 1 |
| 2026-07-27 | 2.50″ | 26 |
| 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 |
How to read the DuPage County map
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.
Nearby counties
The nearest counties with a page of their own: Cook County (76 hail days), Kane County (44) and Will County (57). 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.
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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.