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Pollen History for San Francisco
Daily Pollen Levels
Tree
Overall Level Very Low
Max Moderate
Grass
Overall Level Low
Max High
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 |
|---|---|---|---|
| Jun 20 | Very Low | Low | None |
| Jun 19 | Very Low | Low | None |
| Jun 18 | Very Low | Low | None |
| Jun 17 | Very Low | Very Low | None |
| Jun 16 | Very Low | Very Low | None |
| Jun 15 | Very Low | Low | None |
| Jun 14 | Very Low | Low | None |
| Jun 13 | Very Low | Low | None |
| Jun 12 | Very Low | Low | None |
| Jun 11 | Very Low | Moderate | None |
| Jun 10 | Very Low | Moderate | None |
| Jun 9 | Very Low | Very Low | None |
| Jun 8 | Very Low | Very Low | None |
| Jun 7 | Very Low | Low | None |
| Jun 6 | Very Low | Moderate | None |
| Jun 5 | Very Low | Moderate | None |
| Jun 4 | Very Low | Low | None |
| Jun 3 | Very Low | Moderate | None |
| Jun 2 | Very Low | Very Low | None |
| Jun 1 | Very Low | Low | None |
| May 31 | Very Low | Moderate | None |
| May 30 | Very Low | Low | None |
| May 29 | Very Low | Very Low | None |
| May 28 | Very Low | Moderate | None |
| May 27 | Very Low | Low | None |
| May 26 | Very Low | Moderate | None |
| May 25 | Very Low | Low | None |
| May 24 | Very Low | Low | None |
| May 23 | Very Low | Low | None |
| May 22 | Very Low | Low | None |