Key West pollen forecast — Key West Lighthouse neighborhood

On 16 July 2026, overall pollen levels in Key West are low. Ambrosia is the main contributor to airborne pollen, while grass remain at lower levels

On 17 July 2026, pollen conditions in Key West will be different from today, with ambrosia at low levels

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

On 16 July 2026, Ambrosia is the dominant pollen source in Key West. grass are also present but at lower levels. alder, artemisia, birch, cypress, oak, and willow are not currently active.

Key West's regional pollen pattern holds at Key West Lighthouse, with oak and pine first appearing in January with cypress taking the lead through February. Grass pollen remains a near year-round factor rather than a single peak, and warm, humid conditions keep mold spore counts elevated year-round. Year-round warmth keeps some pollen and mold present in almost every month, which shapes conditions at Key West Lighthouse much as it does elsewhere in Key West.

The Key West 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 Key West, 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.