Pollen Forecast by City

This page provides daily pollen forecasts across major U.S. cities. Pollen levels can vary significantly based on local weather conditions, vegetation, and seasonality. In spring, tree pollen dominates in much of the country, while grass pollen rises in late spring and summer. Weed pollen, including ragweed, typically peaks in late summer and fall.

Our forecasts track tree, grass, and weed pollen to help you plan your day, reduce allergy exposure, and stay informed. Each city page shows a pollen score from 0 to 100 that combines all three pollen types into a single number, so you can quickly understand how conditions might affect you.

We update our data every morning using the Google Pollen API, which analyzes real-time atmospheric conditions and vegetation data. Whether you're checking pollen levels for your daily commute, planning outdoor activities, or managing seasonal allergies, our city-by-city forecasts give you the information you need.