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Pollen History for Boston
Daily Pollen Levels
Tree
Overall Level None
Max Very Low
Grass
Overall Level Low
Max Moderate
Weed
Overall Level None
Max None
Compared to last year
Need more history to compare years. Check back in a few months.
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Jul 22 | None | None | None |
| Jul 21 | None | None | None |
| Jul 20 | None | None | None |
| Jul 19 | None | Very Low | None |
| Jul 18 | None | Very Low | None |
| Jul 17 | None | Very Low | None |
| Jul 16 | None | Very Low | None |
| Jul 15 | None | Low | None |
| Jul 14 | None | Low | None |
| Jul 13 | None | Low | None |
| Jul 12 | None | Low | None |
| Jul 11 | None | Low | None |
| Jul 10 | None | Very Low | None |
| Jul 9 | None | Low | None |
| Jul 8 | None | Low | None |
| Jul 7 | None | None | None |
| Jul 6 | None | Very Low | None |
| Jul 5 | None | Low | None |
| Jul 4 | Very Low | Moderate | None |
| Jul 3 | Very Low | Moderate | None |
| Jul 2 | Very Low | Moderate | None |
| Jul 1 | Very Low | Moderate | None |
| Jun 30 | Very Low | Moderate | None |
| Jun 29 | Very Low | Moderate | None |
| Jun 28 | Very Low | Low | None |
| Jun 27 | Very Low | Moderate | None |
| Jun 26 | Very Low | Low | None |
| Jun 25 | Very Low | Moderate | None |
| Jun 24 | Very Low | Moderate | None |
| Jun 23 | Very Low | Very Low | None |