Mosquito season is heating up across the United States, and Orkin has officially released its 2026 Top Mosquito Cities list ahead of peak summer travel and outdoor activity.
The annual report ranks cities based on the number of new residential mosquito treatments performed by Orkin between March 18, 2025, and March 18, 2026, providing a snapshot of where mosquito activity is driving the highest demand for pest control services.
For residents in Washington, D.C., the latest rankings show the region continues to face major mosquito pressure as temperatures rise and the outdoor season begins.
Where does Washington, D.C. rank among the worst mosquito cities?
According to Orkin’s 2026 rankings, Washington, D.C. came in at No. 6 on the list of America’s worst mosquito cities.
That places the nation’s capital behind only Los Angeles, Chicago, New York, Detroit, and Atlanta in terms of mosquito-related residential treatment demand.
Orkin noted that Washington, D.C. moved up two spots from last year’s rankings, suggesting mosquito activity and demand for mosquito-related products have increased since 2025.
Because the rankings are based on actual service data rather than surveys or projections, the annual report is often viewed as an early indicator of where mosquito issues may be especially frustrating during the summer months.
For D.C. residents planning rooftop outings, park picnics, outdoor dining, or backyard gatherings, the city’s top-10 and rising rank is a warning that the 2026 mosquito season could be particularly bad.
Tips for avoiding mosquitoes this summer
Alongside its annual rankings, Orkin shared several recommendations to help homeowners reduce mosquito activity around their homes and outdoor spaces.
Orkin recommends taking these mosquito prevention steps:
- Dump standing water regularly, including in flowerpots, buckets, bird baths, trash can lids, kiddie pools, and clogged gutters.
- Maintain your yard by trimming grass, weeds, and excess vegetation where mosquitoes may rest during the day.
- Wear insect repellent when spending time outdoors, especially during dawn and dusk when mosquitoes are typically most active.
- Inspect doors and window screens to help keep mosquitoes from entering your home.
Because mosquitoes can reproduce quickly in warm weather, Orkin emphasizes that early prevention is key to limiting infestations throughout the summer season.
