Mosquito Surge in Southern California Amid Unseasonable Warmth
Mosquito Surge in Southern California Amid Unseasonable Warmth
US · Published Mar 1, 2026
• Unseasonably warm weather and recent rainfall have caused a surge in mosquito activity in Southern California during winter.
• Orange County reports a fivefold increase in mosquito populations compared to the five-year average, with the invasive Aedes aegypti species being particularly active.
• Residents are advised to eliminate standing water, use insect repellent, and take other preventive measures to avoid mosquito bites.
Unusual mosquito activity due to warm temperatures, rainfall
Southern California is experiencing an unusual surge in mosquito activity due to unseasonably warm temperatures and recent rainfall, disrupting the typical mosquito season.
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