The US smoke record: every year since 2011
2023 was the smokiest year in this record: the average county had 45.6 days of medium or heavy smoke, against 2.3 in 2016. Roseau County, MN, has the highest ten-year average, at 38 days a year.
By year
The smoke column is a county average. Acres cover US fires only, and much smoke comes from Canada.
Average medium or heavy smoke days per county
| 2011 | 8.1 | 7,763,249 |
| 2012 | 10.7 | 8,487,770 |
| 2013 | 6.5 | 3,875,076 |
| 2014 | 5.4 | 2,979,884 |
| 2015 | 9.1 | 9,160,415 |
| 2016 | 2.3 | 4,281,975 |
| 2017 | 7.3 | 8,924,346 |
| 2018 | 11.1 | 7,471,903 |
| 2019 | 6.3 | 4,198,854 |
| 2020 | 15.3 | 9,658,098 |
| 2021 | 33.9 | 7,076,496 |
| 2022 | 16.8 | 6,870,039 |
| 2023 | 45.6 | 1,970,514 |
| 2024 | 20.0 | 6,539,657 |
| 2025 | 13.1 | 1,177,711 |