Wisconsin Pollen by City
Most of Wisconsin's cities read the cold-temperate Northeast pollen calendar: tree pollen peaks Mar–May, grass May–Jul, and ragweed Aug–Oct — a sharply defined calendar — a hard winter lull, then a compact spring tree burst before grass and a long ragweed fall. Every city below has its own page with today’s verdict and the full 12-month season calendar.
Cities in Wisconsin
| City | Tree pollen season | Population |
|---|---|---|
| Milwaukee | Mar–May | 1,291,752 |
| Madison | Mar–May | 470,689 |
| Appleton | Mar–May | 230,473 |
| Green Bay | Apr–Jun | 222,170 |
| Racine | Mar–May | 136,637 |
| Lannon | Mar–May | 1,482 |
| Chief Lake | Apr–Jun | 660 |
Our dataset lists 792 places in Wisconsin; the 7 above have a page. For a smaller town, the nearest city above is the closest match.