Philadelphia pollen forecast — East Passyunk neighborhood

On 25 June 2026, overall pollen levels in Philadelphia are low. Cypress is the main contributor to airborne pollen, while grass remain at lower levels

On 26 June 2026, pollen conditions in Philadelphia will be different from today, with grass at low levels

According to the five-day outlook, cypress and grass pollen levels will increase later in the week.

On 25 June 2026, Cypress is the dominant pollen source in Philadelphia. grass are also present but at lower levels. hazel and willow are not currently active.

The Philadelphia pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.

Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.

Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Philadelphia, modern forecasts combine recent measurements, weather data, and information about local vegetation.

This allows us to estimate pollen levels for today and the coming days, not just report the past.

Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.