Dayton pollen forecast — Dayton View Historic District neighborhood

On 9 August 2026, overall pollen levels in Dayton are moderate. Ambrosia is the main contributor to airborne pollen

On 10 August 2026, pollen conditions in Dayton will be different from today, with grass at low levels, ambrosia at medium levels, artemisia at low levels

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

On 9 August 2026, Ambrosia is the dominant pollen source in Dayton. grass, artemisia, and cypress are not currently active.

Grass pollen climbs toward a June peak, before ragweed pollen takes center stage across mid-August into October. Actual peak timing can drift earlier or later depending on how the season's weather plays out. Neighboring parts of the county typically see this same sequence with only minor timing shifts. The overall order of species tends to hold steady, even as exact dates shift slightly each year.

The Dayton 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 Dayton, 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.