Pollen Count in Bologne
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In Bologna, Italy, pollen seasons happen every year. Trees and grasses release pollen into the air. This starts in February with almond trees.
Updated: 2/9/2026
In March, hazelnut and birch trees release their pollen. This is the biggest pollen season. Many trees and grasses release pollen at the same time.
In May,grass and weeds release their pollen. This season is smaller than the one in March. Fewer trees release pollen in June and July.
In the fall, ragweed releases pollen from August to October. This is the last pollen season of the year. Then, the cycle starts again in February.
Pollen Forecast Chart
Recommendations
When pollen concentrations reach a peak, we suggest these simple steps to help with hay fever. These tips are extra important on windy days when plants are in peak anthesis (the time when they release the most pollen).
- Wear masks if necessary
- Shower after going out
- Wear sunglasses if windy
- Close windows and doors
- Use an indoor air purifier
- Avoid wearing woolen clothes outside
- Limit outdoor activities
Annual Pollen Overview
Check out this month-by-month overview of the daily average pollen count in Bologne 🌾. This data is based on previous years and serves as a guideline to help you understand when different pollen seasons typically occur in your city.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 1 | 0 | 0 | 0 | 0 | 0 |
| Feb | 32.4 | 0 | 1.4 | 0 | 0 | 0 |
| Mar | 10.5 | 322.1 | 38.2 | 0 | 0.1 | 0 |
| Apr | 6.8 | 151.1 | 217.9 | 0 | 10.8 | 0 |
| May | 0.1 | 23.4 | 947.5 | 0 | 31.2 | 0 |
| Jun | 0 | 9.9 | 862.2 | 0 | 3.7 | 0 |
| Jul | 0 | 0.6 | 490.6 | 7.5 | 0.1 | 0.9 |
| Aug | 0 | 0 | 187.3 | 73.8 | 0 | 104.1 |
| Sep | 0 | 0 | 32.2 | 34.3 | 0 | 67 |
| Oct | 0 | 0 | 1.7 | 2 | 0 | 0 |
| Nov | 0 | 0 | 0.2 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(45 km)