Pollen and allergies — Bologna
Bologna is in the heart of Emilia-Romagna, between the Po Valley and the first Apennine foothills. Meadows, farmland and urban parks alternate in an area where the season can change quickly with wind, rain and temperature.
Periods and allergens to watch
- Late winter and spring: alder and birch can open the tree-pollen calendar.
- Spring and summer: grasses, oaks and other meadow and hill plants shape the botanical context.
- Summer: hot, dry days can help pollen remain airborne.
- Late summer: mugwort and ragweed deserve attention near roadsides and land left to spontaneous vegetation.
Bologna uses CAMS through Open-Meteo. Concentrations are modeled, not measured locally by this service, at approximately 11 km resolution. The forecast displays alder, birch, grasses, mugwort, olive and ragweed; it does not automatically cover cypress, parietaria or every regional species.
The plain can retain air and particles on still days, while altitude, vegetation and local circulation change towards the hills. A cycling route beside a canal or time in a park may not match the city-centre value. Treat the model as a shared area guide and check real conditions before spending a long time outdoors.
This is especially useful when comparing a city-centre day with a trip toward the nearby Apennines and their foothill roads.