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Pollen History for Rotterdam
Daily Pollen Levels
Tree
Overall Level Very Low
Max Very Low
Grass
Overall Level Moderate
Max Moderate
Weed
Overall Level Moderate
Max Moderate
Compared to last year
Tree
Tree pollen is 18% lower than the same period last year
Grass
Grass pollen is similar to the same period last year
Weed
Weed pollen is 14% higher than the same period last year
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Jul 28 | None | Moderate | Moderate |
| Jul 27 | None | Moderate | Moderate |
| Jul 26 | None | Moderate | Moderate |
| Jul 25 | None | Moderate | Moderate |
| Jul 24 | None | Moderate | Moderate |
| Jul 23 | None | Low | Moderate |
| Jul 22 | None | Moderate | Moderate |
| Jul 21 | Very Low | Moderate | Low |
| Jul 20 | Very Low | Moderate | Moderate |
| Jul 19 | None | Moderate | Low |
| Jul 18 | Very Low | Moderate | Low |
| Jul 17 | Very Low | Moderate | Low |
| Jul 16 | Very Low | Moderate | Moderate |
| Jul 15 | Very Low | Moderate | Moderate |
| Jul 14 | Very Low | Moderate | Moderate |
| Jul 13 | Very Low | Moderate | Moderate |
| Jul 12 | Very Low | Moderate | Moderate |
| Jul 11 | Very Low | Moderate | Moderate |
| Jul 10 | Very Low | Moderate | Moderate |
| Jul 9 | None | Moderate | Moderate |
| Jul 8 | None | Moderate | Moderate |
| Jul 7 | None | Moderate | Moderate |
| Jul 6 | None | Moderate | Moderate |
| Jul 5 | None | Moderate | Moderate |
| Jul 4 | None | Moderate | Moderate |
| Jul 3 | None | Moderate | Moderate |
| Jul 2 | None | Moderate | Moderate |
| Jul 1 | None | Moderate | Moderate |
| Jun 30 | Very Low | Moderate | Moderate |
| Jun 29 | Very Low | Moderate | Low |