Mosquito season in Queens County, NY: when it starts and ends

Mosquito months in Queens County

In a normal year mosquito season in Queens County, NY starts around April 10 and ends around November 7, about 30 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Queens County, and when

• Start tipping out standing water weekly by March 27.
• Book any yard treatment for early April, ahead of the July peak.
• Repellent can go away after November 7.
• 82 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to August, and check NY spray notices.

Queens County against the rest of NY

Queens County has the 6th longest season of 62 NY counties, at 211 days against 218 in New York County and 125 in Franklin County. Its mean temperature is 54.9°F.

• Nassau County: April 7 to November 8 (215 days, 113 WNV)
• Richmond County: April 7 to November 6 (214 days, 31 WNV)
• Suffolk County: April 18 to November 1 (197 days, 79 WNV)
• Westchester County: April 19 to October 24 (188 days, 42 WNV)

West Nile in Queens County

From 1999 to 2025, CDC ArboNET counted 213 human West Nile cases in Queens County (186 neuroinvasive) across 27 years. The worst was 1999 with 33; the latest was 2025.

Background: reading the West Nile counts; how the dates are worked out.