Cincinnati pollen forecast — East Westwood neighborhood

On 9 August 2026, overall pollen levels in Cincinnati are low. Ambrosia is the main contributor to airborne pollen, while artemisia and grass remain at lower levels

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

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

On 9 August 2026, Ambrosia is the dominant pollen source in Cincinnati. artemisia and grass are also present but at lower levels. cypress are not currently active.

The waterside hazel and willow are consistently first to release pollen each year, topping out well before most other trees start releasing pollen, around February and March. Woodland oak and birch pick up the pace next, through mid-to-late spring, generally peaking somewhere between April and May. Grass pollen climbs toward a June peak, before ragweed becomes the more dominant allergen from mid-August into October.

The Cincinnati 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 Cincinnati, 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.