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Pollen History for Boston
Daily Pollen Levels
Tree
Overall Level Very Low
Max High
Grass
Overall Level None
Max None
Weed
Overall Level None
Max None
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Apr 15 | Moderate | None | None |
| Apr 14 | Moderate | None | None |
| Apr 13 | Moderate | None | None |
| Apr 12 | Moderate | None | None |
| Apr 11 | High | None | None |
| Apr 10 | High | None | None |
| Apr 9 | Moderate | None | None |
| Apr 8 | Low | None | None |
| Apr 7 | Low | None | None |
| Apr 6 | Moderate | None | None |
| Apr 5 | Very Low | None | None |
| Apr 4 | Moderate | None | None |
| Apr 3 | Low | None | None |
| Apr 2 | Very Low | None | None |
| Apr 1 | Low | None | None |
| Mar 31 | Very Low | None | None |
| Mar 30 | Moderate | None | None |
| Mar 29 | Low | None | None |
| Mar 28 | None | None | None |
| Mar 27 | Very Low | None | None |
| Mar 26 | Low | None | None |
| Mar 25 | Low | None | None |
| Mar 24 | Very Low | None | None |
| Mar 23 | None | None | None |
| Mar 22 | Very Low | None | None |
| Mar 21 | Low | None | None |
| Mar 20 | Very Low | None | None |
| Mar 19 | Very Low | None | None |
| Mar 18 | None | None | None |
| Mar 17 | Very Low | None | None |