Mosquito Season Begins in Colorado: What to Expect
Mosquito Season Begins in Colorado: What to Expect
US · Published Mar 29, 2026
Mosquito season in Colorado typically peaks from late spring through summer, increasing the risk of bites and diseases like West Nile virus.
Use EPA-registered insect repellent, wear protective clothing, and avoid peak mosquito activity (dawn and dusk) to minimize mosquito bites.
Eliminate standing water around your home and ensure windows and doors have screens to prevent mosquito breeding and entry.
Mosquitoes thrive: warmer, wetter conditions prevail
Colorado is preparing for its yearly increase in mosquito activity. Warmer temperatures and more rainfall are creating perfect conditions for mosquitoes to breed. The peak mosquito season usually lasts from late spring through summer, causing annoyance and health risks due to potential diseases like West Nile virus. Local health officials are advising residents to take steps to reduce their exposure and manage mosquito populations near their homes.
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