Mosquito Season Begins in the United States
Mosquito Season Begins in the United States
US · Published Mar 29, 2026
Mosquito season begins in the US as temperatures rise, increasing the risk of diseases like West Nile and Zika.
Public health officials urge residents to eliminate standing water and use insect repellent to minimize mosquito bites.
Wearing protective clothing and ensuring intact window screens are vital steps in preventing mosquito-borne illnesses.
Mosquito season arrives with rising temperatures
As temperatures across the United States rise, the onset of mosquito season is becoming a significant concern, as mosquitoes thrive in warmer weather, and with the arrival of spring, conditions are becoming ideal for their proliferation. These insects pose substantial health risks due to their capacity to transmit diseases such as West Nile virus, Zika virus, and others. The upswing in mosquito activity is typically observed when temperatures consistently climb above 50°F (10°C). This threshold is commonly reached in numerous parts of the country during this time of year, triggering increased mosquito breeding and heightened activity. Areas with standing water, such as ponds, marshes, and even containers in residential areas, become prime breeding grounds.
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