Penn Hills pollen forecast — Churchill Valley neighborhood

On 30 August 2026, overall pollen levels in Penn Hills are high. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels

On 31 August 2026, pollen conditions in Penn Hills will be different from today, with ambrosia at high levels, grass at moderate levels and artemisia continuing to decline

According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while ambrosia and grass pollen will increase, suggesting mixed conditions later in the week.

On 30 August 2026, Ambrosia is the dominant pollen source in Penn Hills. artemisia and grass are also present but at lower levels. cypress are not currently active.

Hazel and willow along the water get the season underway before other species, reaching its high point sometime in late winter or early spring. As spring advances, oak and birch in the nearby woodland become the dominant source, topping out in the April-to-May stretch. Grass pollen rises through late spring toward a June high point, followed by ragweed's own peak stretch from mid-August into October.

The Penn Hills 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 Penn Hills, 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.