Allergy & air

Pollen Count & Allergy Forecast by City

What’s pollinating today, and how bad is it? Each city page leads with today’s pollen verdict, breaks out tree, grass, and ragweed levels, and plots a per-region season calendar so you can see what drives your symptoms month by month — even before any live count loads. Built on open data — no app, across 31,257 U.S. cities.

Pollen counts by city

The largest U.S. cities by population. Every city in the corpus has a pollen page at /pollen/[state]/[city].