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Pollen History for Porto
Daily Pollen Levels
Tree
Overall Level Very Low
Max Very Low
Grass
Overall Level Low
Max Moderate
Weed
Overall Level Very Low
Max Very Low
Compared to last year
Tree
Tree pollen is 12% lower than the same period last year
Grass
Grass pollen is 19% lower than the same period last year
Weed
Weed pollen is 59% higher than the same period last year
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Jul 29 | None | Very Low | Very Low |
| Jul 28 | None | Low | Very Low |
| Jul 27 | None | Moderate | Very Low |
| Jul 26 | None | Low | Very Low |
| Jul 25 | None | Very Low | Very Low |
| Jul 24 | Very Low | Very Low | Very Low |
| Jul 23 | None | Very Low | Very Low |
| Jul 22 | None | Very Low | Very Low |
| Jul 21 | None | Very Low | Very Low |
| Jul 20 | Very Low | Very Low | Very Low |
| Jul 19 | Very Low | Low | Very Low |
| Jul 18 | Very Low | Low | Very Low |
| Jul 17 | Very Low | Very Low | Very Low |
| Jul 16 | Very Low | Very Low | Very Low |
| Jul 15 | Very Low | Very Low | Very Low |
| Jul 14 | Very Low | Very Low | Very Low |
| Jul 13 | Very Low | Low | Very Low |
| Jul 12 | Very Low | Low | Very Low |
| Jul 11 | Very Low | Low | Very Low |
| Jul 10 | Very Low | Low | Very Low |
| Jul 9 | Very Low | Low | Very Low |
| Jul 8 | Very Low | Low | Very Low |
| Jul 7 | Very Low | Very Low | Very Low |
| Jul 6 | Very Low | Low | Very Low |
| Jul 5 | Very Low | Moderate | Very Low |
| Jul 4 | Very Low | Moderate | None |
| Jul 3 | Very Low | Moderate | Very Low |
| Jul 2 | Very Low | Moderate | Very Low |
| Jul 1 | Very Low | Moderate | None |
| Jun 30 | Very Low | Moderate | None |