McDonough County Power Outage History
2015–2025 · Illinois
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 29, 2023 | 105 hrs | 4,645 (32%) | Thunderstorm Wind |
| Apr 20, 2021 | 1 hrs | 4,126 (28%) | Unnamed event |
| May 8, 2023 | 16 hrs | 2,232 (15%) | Hail |
| Aug 23, 2016 | 1 hrs | 1,841 (13%) | Unnamed event |
| May 16, 2022 | 1 hrs | 1,524 (10%) | Tornado |
Over the 11 years from 2015 to 2025, McDonough County recorded 155 distinct power outage events, averaging 3.5 hours per event.
The single worst outage on record in McDonough County started June 29, 2023 (Thunderstorm Wind), lasting 105 hours and leaving up to 4,645 customers without power (32% of the county) at its peak.
May has historically been the worst month for outages in McDonough County, with 26 events recorded during that month across the dataset.
Based on this history, McDonough County earns a Reliability Grade of B, placing it in the 76th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for McDonough County's outage profile
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Similar counties in Illinois
Counties with the closest reliability grade and national percentile to McDonough County.
| County | Grade | National percentile |
|---|---|---|
| Union County | B | 76th |
| Macoupin County | B | 75th |
| Mason County | B | 75th |
| Moultrie County | B | 77th |
| Grundy County | B | 77th |
FAQ
How often does power go out in McDonough County?
Between 2015 and 2025, McDonough County recorded 155 outage events, averaging 3.5 hours each.
What is McDonough County's reliability grade?
McDonough County has a Reliability Grade of B, in the 76th national percentile.
What was the worst power outage in McDonough County?
The worst outage on record started June 29, 2023 (Thunderstorm Wind), lasting 105 hours and affecting up to 4,645 customers.