Mosquito Risk in Jefferson County During High Humidity

Jefferson County, Wisconsin · WI

63
/100
HIGH RISK Steady

Mosquito risk in Jefferson County, Wisconsin is during current humidity conditions rated high with a score of 63 out of 100. This is because warm temperatures are supporting breeding and humidity is elevated. Homeowners should consider taking preventive action or scheduling a professional inspection.

· Source: Open-Meteo professional weather data

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Humidity Alert — Jefferson County

STRONG

Humidity at 87% is creating peak conditions for pest activity.

  • Current humidity: 87%
  • Dewpoint 70.3°F supporting sustained moisture
  • High humidity significantly increases tick and mosquito activity

Mosquito Risk Summary for Jefferson County

Mosquito risk in Jefferson County, Wisconsin is during current humidity conditions rated high with a score of 63 out of 100. This is because warm temperatures are supporting breeding and humidity is elevated. Homeowners should consider taking preventive action or scheduling a professional inspection.

Score: 63/100 Level: HIGH Trend: steady Data: 2026-06-05 19:02:40

Why Mosquito Risk Is High in Jefferson County

Warm temperatures are driving increased activity
Calm wind allows easier flight and movement
gusty_suppression
saturated_soil_standing_water
Elevated humidity supports pest survival
muggy_dewpoint

Current Weather Conditions

Temp
74.4°F
H:75.2° L:62.7°
Humidity
87%
Rain 24h
0"
Wind
8.4 mph

Source: Open-Meteo professional weather data for Jefferson County area

Why Humidity Affects Mosquitoes in Jefferson County

High humidity keeps mosquito populations active for longer periods and extends their flight range. Humid evenings see the heaviest mosquito activity.

Recommended Action

Use fans on outdoor patios, apply repellent, and consider barrier treatment for your yard during sustained high humidity.

3-Day Forecast

3-Day Mosquito Outlook

Today
72°/60°F
None
HIGH 66
Tomorrow
75°/63°F
20% chance
HIGH 69
Day 3
78°/66°F
10% chance
HIGH 72

How to Reduce Mosquito Risk Around Your Jefferson County Home

  • Eliminate standing water in gutters, planters, bird baths, and low areas
  • Treat standing water that cannot be drained with mosquito larvicide
  • Use fans on patios and outdoor seating areas to disrupt flight
  • Install or repair window and door screens
  • Keep vegetation trimmed to reduce daytime resting sites
  • Consider professional mosquito barrier treatment during peak season
  • Use EPA-registered repellents when spending time outdoors

Don't Wait Until It Gets Worse

Current conditions in Jefferson County favor mosquitoes activity. Professional treatment is most effective when applied early.

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Mosquito Forecasts Near Jefferson County

Janesville
45
Oconomowoc
65
Delafield
65
Cottage Grove
33
Watertown
75
Fort Atkinson
63

Other Pests in Jefferson County

Ticks
Severe risk · Score: 85/100
Ants
High risk · Score: 60/100
Wasps
Moderate risk · Score: 50/100
Spiders
High risk · Score: 65/100
Mice & Rats
Low risk · Score: 5/100
Termites
High risk · Score: 70/100
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How We Calculate Risk Scores

Our scoring engine analyzes real-time weather data including temperature, humidity, rainfall, soil conditions, and wind. Each pest has a unique model calibrated to its behavioral patterns. Scores update every 3 hours. Learn more about our methodology

Mosquito FAQ for Jefferson County

What is the current mosquito risk in Jefferson County?
Mosquito risk in Jefferson County is currently high with a score of 63/100. This forecast is based on temperature, recent rain, and wind conditions.
Rain creates standing water where mosquitoes breed. In Jefferson County, even small amounts of collected water in gutters, planters, and low spots can produce thousands of mosquitoes within days.
Mosquitoes become inactive below about 50°F and die when temperatures drop below freezing. In Jefferson County, mosquito season typically ends with the first hard frost.
Eliminate standing water, maintain gutters, treat standing water with larvicide, use fans on patios, and consider professional treatment during peak season.

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⚠️

Mosquito risk is HIGH in Jefferson County — now is a good time to schedule an inspection

Score: 63/100 · Based on live weather data

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