Bug Activity ForecastSt. Catharines, ONUpdated on Friday, May 22nd
Today
Black FliesLow
MosquitoesLow
Deer FliesLow
Monday, May 25, 2026
Black FliesLow
MosquitoesLow
Deer FliesLow
Tuesday, May 26, 2026
Black FliesLow
MosquitoesLow
Deer FliesLow
Wednesday, May 27, 2026
Black FliesLow
MosquitoesLow
Deer FliesLow
Thursday, May 28, 2026
Black FliesLow
MosquitoesLow
Deer FliesLow
Raw data provided by:
Legend
Low Activity
Moderate Activity
High Activity
Not in season, Not native, Not Likely, NA
