Michigan Pollen by City

Michigan's cities read the cold-temperate Northeast pollen calendar: tree pollen peaks Mar–May, grass May–Jul, and ragweed Aug–Oct — a sharply defined calendar — a hard winter lull, then a compact spring tree burst before grass and a long ragweed fall. Every city below has its own page with today’s verdict and the full 12-month season calendar.

Cities in Michigan

9 cities with a pollen page, largest first

CityTree pollen seasonPopulation
DetroitMar–May3,773,725
Grand RapidsMar–May622,168
LansingMar–May328,527
Ann ArborMar–May318,688
FlintMar–May295,285
KalamazooMar–May215,288
Auburn HillsMar–May25,105
PentwaterMar–May872
GrawnApr–Jun800

Our dataset lists 740 places in Michigan; the 9 above have a page. For a smaller town, the nearest city above is the closest match.