North Dakota mosquito forecast, by town

A daily mosquito bite-risk score for all 355 North Dakota towns, grouped by their 53 counties. Mosquito pressure is local, so pick your town for today's number, a 7-day outlook, and what's driving it.

Adams County · 4 towns

Barnes County · 13 towns

Benson County · 9 towns

Billings County · 1 towns

Bottineau County · 12 towns

Bowman County · 4 towns

Burke County · 6 towns

Burleigh County · 4 towns

Cass County · 26 towns

Cavalier County · 12 towns

Dickey County · 6 towns

Divide County · 4 towns

Dunn County · 4 towns

Eddy County · 2 towns

Emmons County · 5 towns

Foster County · 4 towns

Golden Valley County · 3 towns

Grand Forks County · 9 towns

Grant County · 4 towns

Griggs County · 3 towns

Hettinger County · 3 towns

Kidder County · 6 towns

LaMoure County · 8 towns

Logan County · 3 towns

McHenry County · 12 towns

McIntosh County · 5 towns

McKenzie County · 3 towns

McLean County · 12 towns

Mercer County · 6 towns

Morton County · 6 towns

Mountrail County · 7 towns

Nelson County · 7 towns

Oliver County · 1 towns

Pembina County · 11 towns

Pierce County · 3 towns

Ramsey County · 7 towns

Ransom County · 5 towns

Renville County · 6 towns

Richland County · 14 towns

Rolette County · 5 towns

Sargent County · 7 towns

Sheridan County · 3 towns

Sioux County · 3 towns

Slope County · 2 towns

Stark County · 6 towns

Steele County · 4 towns

Stutsman County · 11 towns

Towner County · 6 towns

Traill County · 8 towns

Walsh County · 13 towns

Ward County · 12 towns

Wells County · 7 towns

Williams County · 8 towns

North Dakota mosquito questions

What kinds of mosquitoes live in North Dakota?
North Dakota has floodwater mosquitoes (the dominant summer nuisance biter, which surges after heavy rain), the Asian tiger mosquito (a daytime biter that breeds in yard containers), the house mosquito (the main West Nile carrier), and swamp and cattail-marsh mosquitoes tied to the EEE cycle. Which ones dominate a given town depends on its local breeding habitat.
When does mosquito season start and end in North Dakota?
In North Dakota, mosquito numbers build from about mid-June, peak in mid-to-late summer, and fade with the first cool nights of fall. Biting largely stops once temperatures drop below about 50°F, and a hard freeze ends the season.
Is West Nile or EEE a risk in North Dakota?
Both West Nile virus and Eastern equine encephalitis occur in the region, but human cases are rare. West Nile risk peaks in late-summer heat and tracks the house mosquito in developed areas; EEE rises after mid-July in swampy areas. For confirmed local activity, check the North Dakota health department's arbovirus surveillance.
How do I keep mosquitoes out of my yard in North Dakota?
The single biggest thing you control is standing water: empty anything that holds it, keep gutters clear, and change bird baths weekly. Use EPA-registered repellent at dawn and dusk, and for heavy biting a licensed mosquito-control service can treat breeding sites and resting spots you can't reach.