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Pollen History for Ottawa
Daily Pollen Levels
Tree
Overall Level Very Low
Max Very Low
Grass
Overall Level Very Low
Max Moderate
Weed
Overall Level None
Max None
Compared to last year
Tree
Tree pollen is 41% higher than the same period last year
Grass
Grass pollen is 29% lower than the same period last year
Weed
Not enough data for Weed
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Jul 22 | Very Low | None | None |
| Jul 21 | Very Low | None | None |
| Jul 20 | Very Low | None | None |
| Jul 19 | Very Low | None | None |
| Jul 18 | Very Low | None | None |
| Jul 17 | Very Low | None | None |
| Jul 16 | Very Low | Very Low | None |
| Jul 15 | Very Low | Very Low | None |
| Jul 14 | Very Low | Very Low | None |
| Jul 13 | Very Low | Very Low | None |
| Jul 12 | Very Low | Very Low | None |
| Jul 11 | Very Low | Very Low | None |
| Jul 10 | Very Low | Very Low | None |
| Jul 9 | Very Low | Very Low | None |
| Jul 8 | Very Low | Very Low | None |
| Jul 7 | Very Low | Low | None |
| Jul 6 | Very Low | Low | None |
| Jul 5 | Very Low | Low | None |
| Jul 4 | Very Low | Low | None |
| Jul 3 | Very Low | Very Low | None |
| Jul 2 | Very Low | Low | None |
| Jul 1 | Very Low | Low | None |
| Jun 30 | Very Low | Low | None |
| Jun 29 | Very Low | Moderate | None |
| Jun 28 | Very Low | Moderate | None |
| Jun 27 | Very Low | Low | None |
| Jun 26 | Very Low | Very Low | None |
| Jun 25 | Very Low | Low | None |
| Jun 24 | Very Low | Moderate | None |
| Jun 23 | Very Low | Moderate | None |