Idaho Pollen by City

Idaho's cities read the high-elevation Mountain West pollen calendar: tree pollen peaks Mar–May, grass May–Jul, and ragweed Aug–Oct — short, sharp seasons set late by elevation, with sagebrush adding to the late-summer weed load. Every city below has its own page with today’s verdict and the full 12-month season calendar.

Cities in Idaho

7 cities with a pollen page, largest first

CityTree pollen seasonPopulation
BoiseApr–Jun448,305
NampaApr–Jun201,956
Coeur d'AleneApr–Jun131,592
SandpointApr–Jun9,637
Sun ValleyApr–Jun1,460
MaltaMar–May346
StanleyApr–Jun319

Our dataset lists 236 places in Idaho; the 7 above have a page. For a smaller town, the nearest city above is the closest match.