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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 similar to the same period last year
Grass
Grass pollen is 13% lower than the same period last year
Weed
Not enough data for Weed
| Time | Tree | Grass | Weed |
|---|---|---|---|
| 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 |
| Jun 29 | Very Low | Moderate | None |
| Jun 28 | Very Low | Low | Very Low |
| Jun 27 | Very Low | Very Low | None |
| Jun 26 | Very Low | Very Low | None |
| Jun 25 | Very Low | Very Low | None |
| Jun 24 | Very Low | Moderate | None |
| Jun 23 | Very Low | Moderate | Very Low |