Pittsburgh pollen forecast — Mount Washington neighborhood

On 25 June 2026, overall pollen levels in Pittsburgh are moderate. Grass is the main contributor to airborne pollen, while cypress remain at lower levels

On 26 June 2026, pollen conditions in Pittsburgh will be different from today, with grass continuing to decline

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

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

Pittsburgh Mount Washington occupies the dramatic ridge above the confluence of the Monongahela and Allegheny rivers, where oak, maple, and hickory are the main pollen sources on this wooded hillside overlooking the city. The river valley below concentrates pollen under calm conditions, while surrounding Pennsylvania Appalachian woodland contributes substantial tree pollen and mugwort extends into September throughout this dramatic Pittsburgh clifftop neighbourhood.

The Pittsburgh 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 Pittsburgh, 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.