Mosquito season in Aleutians East Borough, AK: when it starts and ends
Mosquito months in Aleutians East Borough
In a normal year mosquito season in Aleutians East Borough, AK starts around July 5 and ends around September 4, about 9 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Aleutians East Borough, and when
- Start tipping out standing water weekly by June 21.
- Book any yard treatment for early July, ahead of the August peak.
- Repellent can go away after September 4.
- No West Nile cases since 2016, so bites in Aleutians East Borough are a nuisance; check window screens.
Aleutians East Borough against the rest of AK
Aleutians East Borough has the 24th longest season of 26 AK counties, at 61 days against 142 in Ketchikan Gateway Borough and 48 in Nome Census Area. Its mean temperature is 39.4°F.
- Lake and Peninsula Borough: June 15 to August 31 (77 days, 0 WNV)
- Denali Borough: June 6 to August 18 (73 days, 0 WNV)
- Northwest Arctic Borough: June 25 to August 22 (59 days, 0 WNV)
- Nome Census Area: June 29 to August 16 (48 days, 0 WNV)
West Nile in Aleutians East Borough
CDC ArboNET lists no human West Nile cases for Aleutians East Borough from 1999 to 2025.
Background: when mosquitoes go away for the winter; how the dates are worked out.