Basel pollen forecast - today, tomorrow and the week ahead

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

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

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

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

Basel's pollen season runs from January through August, opening with hazel and alder from January before birch peaks strongly through April. Oak and ash follow through April and May, with grass peaking through June and July. The Rhine plain setting channels prevailing westerly winds, while surrounding Swiss, French, and German farmland and the Black Forest and Jura foothills contribute substantial tree and grass pollen. The tri-national city setting means pollen sources extend across three countries.

The Basel 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 Basel, 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.