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Pollen History for Rotterdam
Daily Pollen Levels
Tree
Overall Level Very Low
Max Very Low
Grass
Overall Level Moderate
Max High
Weed
Overall Level Low
Max High
Compared to last year
Tree
Tree pollen is 16% lower than the same period last year
Grass
Grass pollen is similar to the same period last year
Weed
Weed pollen is 17% higher than the same period last year
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Aug 18 | None | Very Low | Very Low |
| Aug 17 | None | Low | Low |
| Aug 16 | None | Low | Low |
| Aug 15 | None | Low | Low |
| Aug 14 | None | Moderate | Low |
| Aug 13 | None | Moderate | Low |
| Aug 12 | None | Moderate | Low |
| Aug 11 | None | Low | Low |
| Aug 10 | None | Low | Low |
| Aug 9 | None | Moderate | Moderate |
| Aug 8 | None | Moderate | Moderate |
| Aug 7 | None | Moderate | Moderate |
| Aug 6 | None | Moderate | Low |
| Aug 5 | None | Low | Low |
| Aug 4 | None | Moderate | Moderate |
| Aug 3 | None | Moderate | Moderate |
| Aug 2 | None | Moderate | Moderate |
| Aug 1 | None | Moderate | Moderate |
| Jul 31 | None | Low | Moderate |
| Jul 30 | None | Moderate | Moderate |
| Jul 29 | None | Moderate | High |
| 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 |