Galveston pollen forecast - today, tomorrow and the week ahead

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

On 17 July 2026, pollen conditions in Galveston will be different from today, with grass at low levels, ambrosia at low levels, cypress at low levels

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

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

Galveston's pollen season opens with oak and cedar from late January in the mild Gulf Coast climate. Grass pollen follows through March and April, with ragweed extending the season into autumn. The exposed barrier island position on the Gulf of Mexico means strong onshore southerly winds frequently disperse pollen, while surrounding Gulf Coast wetlands and coastal prairie contribute grass and reed pollen under prevailing southerly winds.

The Galveston 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 Galveston, 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.