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City of Winnipeg
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Insect Control

AFA Level
Adulticiding Factor Analysis (AFA)
Current Nuisance Mosquito Control Measures

This website is updated regularly to provide Winnipeg citizens with the most current information available regarding the Adulticiding Factor Analysis. The amount of mosquitoes we get in Winnipeg depends on the weather we receive. Insect Control activities and day to day operations are planned and adjusted based on weather forecasts and significant changes in environmental conditions.

The Current AFA Level is: LOW

AFA Factors Current Conditions
Soil Moisture Conditions
  • Normal soil moisture conditions.
Forecasted Rainfall
  • Approximately 10 to 15mm of rain has fallen in the last 7 days.
  • There is an expectation of rainfall in the next 7 days.
Trap counts (New Jersey Light Traps)
  • The NJLT average for May 24th, 2019 is 0.
Current Status of Adult Mosquito Population
  • Current population are comprised of overwintering adults.
  • Current emergence of spring species in low numbers.
Average Cumulative Temperatures
("Current Degree Model")
  • Temperatures are favourable for normal larval development.
Status of Larval Development Sites
  • Current emergence of spring species in low numbers.

Please refer to the Adult Mosquito Control Policy, which includes the Adulticiding Factor Analysis (AFA) Guidelines, for more details.

Last update: May 24, 2019
Contact Us
Bugline: 311
or 1-877-311-4WPG
Media inquiries: 204-986-6000

Administrative Office and Research Laboratory
1539 Waverley Street
Winnipeg MB R3T 4V7

Operations Base
3 Grey Street
Winnipeg MB R2L 1V2
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