Around Washington
Conditions vary across the state. Choose your city below, then describe what’s happening around your home or business.
← All locations
Local mosquito information
Mosquito control in Washington
Learn what to look for around your property, explore your city, and ask about an inspection or a quote.
Mosquitoes in Washington: what to know
What to note
Where you see mosquitoes, how long it has been going on, and anything you’ve already tried are the most useful details to mention.
A useful next step
Ask about an inspection, what treatment would involve, and whether follow-up visits are included. You don’t need to identify the problem yourself before getting in touch.
Local research
Mosquitoes in Washington: what the public record shows
Before you compare quotes, it helps to know which mosquitoes actually live in Washington, when they are busiest, and what the state figures look like. Everything below links to the agency or university page it came from.
1 (0.01 per 100,000)
West Nile neuroinvasive disease cases, 2024
Neuroinvasive counts are the most reliable state comparison because nearly all severe cases are diagnosed and reported.
CDCEarliest detections in May, latest in October; first detected in Washington in 2002
West Nile detection window
Risk is concentrated in south-central Washington, and cases are reported most years.
Washington State Department of HealthWhen mosquitoes are busiest in Washington
Washington DOH: detections from May (earliest) to October (latest). California reports its heaviest WNV activity in late summer; CDC peak is late August to early September.
Rules that apply in Washington
For context, nationally
Sources: CDC; Washington State Department of Health. Figures are quoted as the source prints them. How we check our sources
Explore Washington cities
Auburn
Marine West Coast · suburban setting
Read the local guide →
Bellevue
Marine West Coast · urban setting
Read the local guide →
Bellingham
Marine West Coast · suburban setting
Read the local guide →
Everett
Marine West Coast · urban setting
Read the local guide →
Federal Way
Marine West Coast · suburban setting
Read the local guide →
Kent
Marine West Coast · urban setting
Read the local guide →
Kirkland
Marine West Coast · suburban setting
Read the local guide →
Olympia
Marine West Coast · suburban setting
Read the local guide →
Redmond
Marine West Coast · urban setting
Read the local guide →
Renton
Marine West Coast · urban setting
Read the local guide →
Seattle
Marine West Coast · urban setting
Read the local guide →
Tacoma
Marine West Coast · urban setting
Read the local guide →
Vancouver
Marine West Coast · urban setting
Read the local guide →
Walla Walla
Semi-Arid · rural setting
Read the local guide →