Power Outages in Williamson County, IL
No live outage feed is available for Williamson County, IL yet — live coverage depends on local utilities reporting to ODIN. In 2025, the average customer here lost power for about 14.6 hours.
Williamson County, IL is served by local tracked utilities.
Williamson County's utilities do not report live data to ODIN, so real-time outage counts aren't available here. The historical record below is complete.
- Heat AdvisoryMODERATE
Williamson County has been under 9 National Weather Service alerts recently — most recently a Heat Advisory on July 18, 2026.
- Heat Advisory ×3
- Flood Warning ×2
- Flood Watch ×2
- Special Weather Statement ×2
Hardest-hit cities in Williamson County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Williamson County went about 14.6 hours without power. Peak simultaneous outage on record reached 10,894 customers.
Worst year here was 2025 (peak 10,894 customers out) · decade average 3.5 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 491 | 5,033 | 1.1 |
| 2016 | 611 | 5,019 | 1.5 |
| 2017 | 495 | 4,647 | 1.4 |
| 2018 | 759 | 7,504 | 5.1 |
| 2019 | 815 | 7,719 | 3.5 |
| 2020 | 808 | 2,263 | 1.0 |
| 2021 | 789 | 6,630 | 2.0 |
| 2022 | 798 | 4,140 | 1.7 |
| 2023 | 692 | 4,280 | 2.0 |
| 2024 | 723 | 8,670 | 4.1 |
| 2025 | 794 | 10,894 | 14.6 |
Very High high winds exposure · 3.5 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability relatively moderate — outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Williamson County: FAQ
- How often does Williamson County, IL lose power?
- Based on EAGLE-I records, Williamson County, IL logged 794 distinct outage events in 2025, averaging about 14.6 hours without power per customer over the year.
- What was the worst power outage in Williamson County, IL?
- The largest tracked outage peaked at 10,894 customers without power, beginning January 5, 2025 and lasting about 6d 15h.
- Is there a power outage in Williamson County, IL right now?
- No major outage is currently reported for Williamson County, IL. Live coverage depends on whether local utilities report to ODIN.
Outages are tracked at the county level; these ZIP codes fall within Williamson County.
62841, 62902, 62915, 62918, 62921, 62922, 62933, 62948, 62949, 62951, 62959, 62974
Machine-readable data: /api/v1/counties/17199 and /api/v1/counties/17199/history. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Illinois customers).