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Pollen History for San Francisco
Daily Pollen Levels
Tree
Overall Level None
Max None
Grass
Overall Level None
Max Very Low
Weed
Overall Level Very Low
Max Very Low
Compared to last year
Need more history to compare years. Check back in a few months.
| Time | Tree | Grass | Weed |
|---|---|---|---|
| Aug 19 | None | None | Very Low |
| Aug 18 | None | None | Very Low |
| Aug 17 | None | None | Very Low |
| Aug 16 | None | None | Very Low |
| Aug 15 | None | None | Very Low |
| Aug 14 | None | None | Very Low |
| Aug 13 | None | None | Very Low |
| Aug 12 | None | None | Very Low |
| Aug 11 | None | None | Very Low |
| Aug 10 | None | None | Very Low |
| Aug 9 | None | None | Very Low |
| Aug 8 | None | None | Very Low |
| Aug 7 | None | None | Very Low |
| Aug 6 | None | None | Very Low |
| Aug 5 | None | None | Very Low |
| Aug 4 | None | None | Very Low |
| Aug 3 | None | None | Very Low |
| Aug 2 | None | None | Very Low |
| Aug 1 | None | None | Very Low |
| Jul 31 | None | None | None |
| Jul 30 | None | None | None |
| Jul 29 | None | None | None |
| Jul 28 | None | None | None |
| Jul 27 | None | None | None |
| Jul 26 | None | None | None |
| Jul 25 | None | None | None |
| Jul 24 | None | None | None |
| Jul 23 | None | None | None |
| Jul 22 | None | None | None |
| Jul 21 | None | Very Low | None |