Around Arizona
Conditions vary across the state. Choose your city below, then describe what’s happening around your home or business.
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Local mosquito information
Mosquito control in Arizona
Learn what to look for around your property, explore your city, and ask about an inspection or a quote.
Mosquitoes in Arizona: 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 Arizona: what the public record shows
Before you compare quotes, it helps to know which mosquitoes actually live in Arizona, when they are busiest, and what the state figures look like. Everything below links to the agency or university page it came from.
23 (0.3 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.
CDC82 cases; 72 in Maricopa County
Human West Nile cases, 2023 (final)
Arizona's WNV is overwhelmingly a Phoenix-metro problem tied to irrigation and stormwater.
Arizona Department of Health Services764 (2022), 62 (2023), 157 (2024), 182 (2025), 183 (2026 through Aug 31)
WNV-positive mosquito samples, Maricopa County
Positive mosquito pools swing widely year to year, so a quiet year does not predict the next.
Maricopa County Environmental ServicesMosquito species recorded in Arizona
- Yellow fever mosquito (Aedes aegypti) — CDC lists Aedes aegypti as more likely than Ae. albopictus to spread dengue, Zika, and chikungunya; prefers human hosts and lives in and around homes. Tropical, subtropical, and…
When mosquitoes are busiest in Arizona
Arid-zone season tracks irrigation and monsoon moisture; Maricopa County mosquito positives are reported through August and beyond each year. CDC WNV peak is late August to early September.
CDC lists Arizona among states with limited local dengue spread. Maricopa County Environmental Services publishes weekly mosquito positives.
Rules that apply in Arizona
For context, nationally
Sources: CDC; Arizona Department of Health Services; Maricopa County Environmental Services; Potential Range of Aedes Mosquitoes. Figures are quoted as the source prints them. How we check our sources
