The 2026 Spring Pest Forecast: What Experts Predict for Your Region

Every spring, the National Pest Management Association (NPMA) releases its Bug Barometer — a region-by-region forecast of expected pest activity based on winter weather patterns, historical data, and input from entomologists across the country. The Spring/Summer 2026 forecast is notably alarming: experts predict heightened activity across nearly all pest categories, coast to coast.

The primary driver is weather. A warmer-than-average winter across much of the continental U.S. allowed larger numbers of insects, rodents, and other pests to survive to spring. Combined with wet conditions in the South and early warmth in the Northeast, conditions are set for an active pest season.

How the Bug Barometer Works

The NPMA Bug Barometer is not a casual prediction — it's developed by board-certified entomologists who analyze:

• Winter temperature data: Mild winters reduce winter kill, allowing larger pest populations to survive
• Precipitation patterns: Wet conditions create mosquito breeding habitat and push rodents indoors; dry conditions drive pests toward water sources (including homes)
• Historical pest trend data: Year-over-year patterns in pest control service calls
• Ecological indicators: Acorn mast years (which fuel rodent populations), tick host animal densities, and vegetation growth patterns

Region-by-Region Forecast

Northeast (New England through Mid-Atlantic)

Pest	Forecast	Action Timing
Ticks	Above average — early emergence expected	Begin yard treatment by April
Ants	Above average — mild winter boosted colony survival	Perimeter treatment in March-April
Stink bugs	High — large overwintering populations emerging	Vacuum emerging bugs; seal entry points for fall
Mosquitoes	Early start expected	Eliminate standing water by April
Termites	Average — swarming expected March through May	Schedule inspection if none in past year

Southeast (Virginia through Florida, Gulf Coast)

Pest	Forecast	Action Timing
Mosquitoes	Well above average — wet winter created abundant breeding habitat	Start source reduction immediately; barrier sprays by March
Termites	High — early and heavy swarming expected	Ensure active prevention contract is in place
Cockroaches	Above average — moisture-driven population growth	Gel bait treatment for indoor species; perimeter spray
Fire ants	Above average — winter survival rates high	Broadcast bait in April; mound treatments as needed
Ticks	Above average — lone star tick activity increasing	Yard treatment and personal protection year-round

Midwest (Ohio Valley through Great Plains)

Pest	Forecast	Action Timing
Ants	Above average — warm winter preserved colonies	Perimeter treatment in April
Rodents	Above average — spring transition pushes rodents outdoors but some remain	Inspect and seal entry points now
Stink bugs	High — NPMA flagged Great Lakes/Ohio Valley specifically	Vacuum emerging bugs; plan fall exclusion
Ticks	Above average in northern tier (WI, MN, MI)	Yard treatment by late April; permethrin-treat clothing
Mosquitoes	Average to above average	Source reduction in April-May

Southwest (Texas through Arizona, Southern California)

Pest	Forecast	Action Timing
Scorpions	Above average — emerging from winter harborage	Seal home perimeter; UV detection at night; professional treatment
Fire ants	Above average in Texas	Broadcast bait in April
Termites	Average — desert-adapted species active early	Annual inspection recommended
Bark beetles	Elevated — drought stress on trees increases vulnerability	Maintain tree health; remove dead/dying trees

West Coast (Pacific Northwest through California)

Pest	Forecast	Action Timing
Rodents	High — LA ranked #1 rattiest city; urban rat populations growing	Exclusion work; sanitation; professional monitoring
Ants (Argentine)	Above average — "super colonies" active year-round in CA	Perimeter barrier treatment; bait stations
Spiders	Average — includes brown recluse (southern areas) and black widows	Reduce harborage; clear clutter in garages and storage
Drywood termites	Average — swarming expected May-June in southern CA	Annual inspection; watch for frass piles near windows

The Case for Starting Prevention Now

The single most consistent recommendation from pest management professionals is that prevention started 4–6 weeks before peak activity is dramatically more effective than treatment after pests appear. For most of the country, that means March and April are the critical planning months.

A practical spring pest prevention checklist:

• March: Inspect home exterior for winter damage, seal gaps and cracks, check door sweeps and window screens
• April: Begin yard cleanup (leaf litter, standing water, wood pile relocation), schedule professional inspection if in a high-risk area, apply tick yard treatment in affected regions
• May: Activate mosquito prevention (BTI in standing water, eliminate breeding sites), begin regular tick checks, ensure termite prevention contract is current

The 2026 forecast makes one thing clear: this is not a year to wait and see. The weather conditions that reduce pest populations — sustained hard freezes, drought during key breeding periods — were largely absent this past winter. The biological consequence is that more pests survived, more will emerge, and they'll arrive earlier than usual.