Out of 69 counties with wildfire data, these are the counties with the highest smoke exposure risk.
| Statistic | Value |
|---|---|
| Counties ranked | 69 |
| Avg smoke risk (top 100) | 6/100 |
| Total county fires 5yr (top 100) | 181 |
Top 69 Counties
| Rank | County | State | Smoke Risk | County Fires (5yr) | ZIP Codes |
|---|---|---|---|---|---|
| 1 | Lawrence | Ohio | 27/100 | 38 | 10 |
| 2 | Gallia | Ohio | 26/100 | 22 | 7 |
| 3 | Jackson | Ohio | 21/100 | 38 | 7 |
| 4 | Scioto | Ohio | 21/100 | 7 | 12 |
| 5 | Meigs | Ohio | 15/100 | 22 | 10 |
| 6 | Pike | Ohio | 15/100 | 1 | 7 |
| 7 | Adams | Ohio | 12/100 | 7 | 13 |
| 8 | Vinton | Ohio | 12/100 | 5 | 7 |
| 9 | Athens | Ohio | 11/100 | 2 | 21 |
| 10 | Ross | Ohio | 11/100 | 1 | 9 |
| 11 | Hocking | Ohio | 10/100 | 5 | 10 |
| 12 | Fairfield | Ohio | 8/100 | 5 | 15 |
| 13 | Morgan | Ohio | 8/100 | 1 | 5 |
| 14 | Perry | Ohio | 7/100 | 1 | 9 |
| 15 | Highland | Ohio | 7/100 | 0 | 3 |
| 16 | Muskingum | Ohio | 6/100 | 1 | 18 |
| 17 | Franklin | Ohio | 6/100 | 0 | 75 |
| 18 | Clark | Ohio | 6/100 | 0 | 21 |
| 19 | Pickaway | Ohio | 6/100 | 0 | 5 |
| 20 | Coshocton | Ohio | 6/100 | 0 | 10 |
| 21 | Columbiana | Ohio | 6/100 | 0 | 29 |
| 22 | Mahoning | Ohio | 6/100 | 0 | 31 |
| 23 | Trumbull | Ohio | 6/100 | 0 | 26 |
| 24 | Hamilton | Ohio | 6/100 | 0 | 78 |
| 25 | Butler | Ohio | 6/100 | 0 | 18 |
| 26 | Warren | Ohio | 6/100 | 0 | 13 |
| 27 | Clinton | Ohio | 6/100 | 0 | 11 |
| 28 | Brown | Ohio | 6/100 | 0 | 12 |
| 29 | Clermont | Ohio | 6/100 | 0 | 15 |
| 30 | Washington | Ohio | 6/100 | 0 | 18 |
| 31 | Licking | Ohio | 5/100 | 0 | 18 |
| 32 | Delaware | Ohio | 5/100 | 0 | 9 |
| 33 | Knox | Ohio | 5/100 | 0 | 9 |
| 34 | Champaign | Ohio | 5/100 | 0 | 12 |
| 35 | Fayette | Ohio | 5/100 | 0 | 5 |
| 36 | Madison | Ohio | 5/100 | 0 | 6 |
| 37 | Lucas | Ohio | 5/100 | 0 | 43 |
| 38 | Noble | Ohio | 5/100 | 0 | 8 |
| 39 | Belmont | Ohio | 5/100 | 0 | 24 |
| 40 | Monroe | Ohio | 5/100 | 0 | 10 |
| 41 | Guernsey | Ohio | 5/100 | 0 | 13 |
| 42 | Jefferson | Ohio | 5/100 | 0 | 15 |
| 43 | Ashtabula | Ohio | 5/100 | 0 | 19 |
| 44 | Lake | Ohio | 5/100 | 0 | 4 |
| 45 | Portage | Ohio | 5/100 | 0 | 14 |
| 46 | Montgomery | Ohio | 5/100 | 0 | 54 |
| 47 | Greene | Ohio | 5/100 | 0 | 16 |
| 48 | Geauga | Ohio | 4/100 | 1 | 21 |
| 49 | Union | Ohio | 4/100 | 0 | 12 |
| 50 | Morrow | Ohio | 4/100 | 0 | 5 |
| 51 | Harrison | Ohio | 4/100 | 0 | 21 |
| 52 | Holmes | Ohio | 3/100 | 0 | 16 |
| 53 | Carroll | Ohio | 3/100 | 0 | 8 |
| 54 | Stark | Ohio | 2/100 | 4 | 45 |
| 55 | Henry | Ohio | 2/100 | 1 | 18 |
| 56 | Williams | Ohio | 2/100 | 0 | 9 |
| 57 | Fulton | Ohio | 2/100 | 0 | 9 |
| 58 | Tuscarawas | Ohio | 2/100 | 0 | 15 |
| 59 | Logan | Ohio | 1/100 | 0 | 19 |
| 60 | Sandusky | Ohio | 1/100 | 0 | 8 |
| 61 | Ashland | Ohio | 1/100 | 0 | 10 |
| 62 | Preble | Ohio | 1/100 | 0 | 12 |
| 63 | Huron | Ohio | 0/100 | 4 | 16 |
| 64 | Wayne | Ohio | 0/100 | 4 | 16 |
| 65 | Summit | Ohio | 0/100 | 4 | 43 |
| 66 | Medina | Ohio | 0/100 | 4 | 17 |
| 67 | Richland | Ohio | 0/100 | 1 | 17 |
| 68 | Lorain | Ohio | 0/100 | 1 | 16 |
| 69 | Cuyahoga | Ohio | 0/100 | 1 | 60 |
Methodology
County rankings for Ohio based on average smoke risk score and fire frequency.
Data sources: National Interagency Fire Center (NIFC), EPA AirNow. Last updated: 2026-06-04.
Frequently Asked Questions
How is wildfire smoke risk calculated?
Smoke risk scores (0-100) combine multiple factors: proximity to recent wildfires, county fire frequency over the past 5 years, historical smoke days, and geographic position relative to typical fire corridors. Higher scores indicate greater smoke exposure risk during fire season.
How can I protect myself from wildfire smoke?
Use a HEPA air purifier indoors, wear N95 or KN95 masks outdoors during smoke events, seal windows and doors, and monitor AirNow.gov for real-time air quality. Create a clean room in your home with the purifier running and windows sealed.