Mosquito season in Ford County, IL: when it starts and ends
Mosquito months in Ford County
In a normal year mosquito season in Ford County, IL starts around April 13 and ends around October 23, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Ford County, and when
- Start tipping out standing water weekly by March 30.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 23.
- 1 West Nile case since 2016 (last 2018): you should use repellent at dusk June to August, more so if over 60.
Ford County against the rest of IL
Ford County has the 73rd longest season of 102 IL counties, at 193 days against 232 in Pulaski County and 174 in Boone County. Its mean temperature is 50.9°F.
- Piatt County: April 11 to October 23 (195 days, 0 WNV)
- Kankakee County: April 14 to October 25 (194 days, 4 WNV)
- McDonough County: April 13 to October 23 (193 days, 1 WNV)
- Rock Island County: April 13 to October 23 (193 days, 3 WNV)
West Nile in Ford County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Ford County (3 neuroinvasive) across 4 years. The worst was 2018 with 1; the latest was 2018.
See how the dates are worked out, and when mosquitoes go away for the winter.