Cleveland pollen forecast — Glenville High School's Football Field neighborhood

On 16 July 2026, overall pollen levels in Cleveland are low. Grass is the main contributor to airborne pollen

On 17 July 2026, pollen conditions in Cleveland will be similar to today, with grass at low levels

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

On 16 July 2026, Grass is the dominant pollen source in Cleveland. birch, cypress, oak, willow, alder, ambrosia, and artemisia are not currently active.

Glenville High School's Football Field follows Cleveland's established pollen calendar, beginning with maple and elm from March with oak taking the lead through April. A grass pollen peak follows through May and June; a late-summer ragweed peak runs into September. A humid continental climate drives a sharp spring tree peak and an equally distinct late-summer ragweed run, a pattern felt across this part of Cleveland.

The Cleveland 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 Cleveland, 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.