What's Bugging Your City: 2026 Pest Activity Map

Last updated: March 14, 2026

By James — Founder of Pest Control Pricing

Pest activity varies dramatically across the United States based on climate, geography, season, and urbanization. This interactive dashboard shows which pests are most active in 50 major U.S. metros right now, based on seasonal patterns, regional pest data, and climate conditions. Select your city to see what pests to watch for and what prevention steps to take. For a month-by-month breakdown, see our Seasonal Pest Calendar. For treatment pricing, see our pest control cost guide.

Understanding Pest Activity in Your Area

Pest activity is driven by a combination of climate, geography, and urbanization. Understanding these factors helps homeowners anticipate problems before they escalate and schedule preventive treatment during the right windows.

Why pest activity varies by region

Southern cities like Houston, Miami, and New Orleans have year-round pest pressure because warm, humid conditions support insect reproduction continuously. Northern cities like Minneapolis, Chicago, and Boston see dramatic seasonal shifts: insects peak in summer while rodents become the dominant concern in winter as they seek indoor shelter from freezing temperatures.

Seasonal patterns to watch

• Spring (March to May): Termite swarm season across the South and Mid-Atlantic. Ants emerge in force. Ticks become active in wooded areas.
• Summer (June to August): Peak activity for most insects, including mosquitoes, wasps, cockroaches, and spiders. Bed bug activity increases with summer travel.
• Fall (September to November): Rodents begin moving indoors. Stink bugs, boxelder bugs, and lady beetles seek winter shelter in homes. Last major mosquito push before frost.
• Winter (December to February): Mice and rats are the primary concern in cold-climate cities. Indoor cockroach and bed bug activity continues year-round regardless of outdoor temperatures.

Climate change is shifting pest ranges

Warming winters are expanding the range of several pest species northward. Termites that were once limited to the Deep South are now found in states like Virginia, Maryland, and southern Ohio. Mosquito-borne disease vectors are appearing in higher latitudes and altitudes than previous decades. Fire ants continue to migrate north through Oklahoma, Tennessee, and the Carolinas. These shifts mean homeowners in traditionally lower-risk areas should stay alert to pests they may not have dealt with before.

Prevention saves money

Scheduling preventive treatment before peak pest season is significantly cheaper than emergency treatment during an active infestation. A quarterly pest control plan averaging $100 to $175 per visit can prevent infestations that would cost $500 to $2,000 or more to remediate. Use the dashboard above to identify when your city's pest pressure peaks, then schedule treatment one to two months before that window.

The Most Pest-Prone Cities in America

Based on composite pest activity scores across all major pest types and all twelve months, these ten cities face the highest overall pest pressure in the United States:

1. Houston, TX -- Year-round termites, mosquitoes, cockroaches, and fire ants. Humid Gulf Coast climate supports continuous reproduction.
2. Miami, FL -- Tropical climate means no winter kill for pests. Termites, mosquitoes, and cockroaches are constant. Tourism brings bed bug risk.
3. New Orleans, LA -- Ground zero for Formosan termites. Below-sea-level elevation, extreme humidity, and standing water create ideal conditions for mosquitoes and cockroaches.
4. Tampa, FL -- Similar to Miami with slightly less intensity. Year-round pest pressure with severe mosquito and termite activity.
5. Atlanta, GA -- Humid subtropical climate with heavy termite, mosquito, and fire ant pressure. Urban density adds rodent and cockroach issues.
6. Dallas, TX -- Hot summers drive scorpion and fire ant activity. Termites are aggressive. Mild winters provide minimal pest relief.
7. Jacksonville, FL -- Coastal humidity, marshlands, and warm year-round temperatures create persistent pest pressure.
8. Orlando, FL -- Central Florida heat and humidity. Tourism drives bed bug vigilance. Termites and mosquitoes year-round.
9. San Antonio, TX -- Scorpions, fire ants, and termites. Hot summers and mild winters keep pests active most of the year.
10. Nashville, TN -- Humid subtropical climate supports termites, mosquitoes, and a diverse range of crawling insects.

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