Puerto Rico Pollen by City

Puerto Rico's cities read the warm tropical / sub-tropical pollen calendar: tree pollen peaks Jan–Apr, grass year-round, and ragweed Sep–Nov — almost no off-season for grass, which pollinates year-round here, so the calendar is less about timing and more about the constant grass baseline. Every city below has its own page with today’s verdict and the full 12-month season calendar.

Cities in Puerto Rico

3 cities with a pollen page, largest first

CityTree pollen seasonPopulation
San JuanDec–Mar1,813,477
AguadillaDec–Mar225,238
HondurasDec–Mar718

Our dataset lists 281 places in Puerto Rico; the 3 above have a page. For a smaller town, the nearest city above is the closest match.