Marquam Trail - Pollen and Air Quality Forecast for Today

Race day: All year

Distance: 7.6 km

Pollen levels are high today, with ragweed, grass, and mugwort as the main active species. Air quality along the route is good, with all pollutants at low levels. Based on Airmine's forecast, which uses satellite data to calculate exposure every 200 metres along the route, air quality is at its worst 0.0 km after start. Pollen exposure peaks at 3.5 km after start.

To prepare for your activity, use the Airmine app to check the Marquam Trail forecast before heading out.

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.

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Route map

Today - 30 August

Pollen

Acacia (Acacia):

None

0/100

Alder (Alnus):

None

0/100

Birch (Betula):

None

0/100

Hazel (Corylus):

None

0/100

Cypress (Cupressaceae):

None

0/100

Eucalyptus (Myrtaceae):

None

0/100

Grass (Poaceae):

Moderate

40/100

Oak (Quercus):

None

0/100

Willow (Salicaceae):

None

0/100

Mugwort (Artemisia):

Low

23/100

Mulberry (Morus):

None

0/100

Plane (Platanus):

None

0/100

Nettle (Urtica):

None

0/100

Ragweed (Ambrosia):

High

70/100

Goosefoot (Amaranthaceae):

None

0/100

Air Quality

AQI:

Good

15.8/100

PM2.5 (fine particles):

Good

2.8/100

PM10 (coarse particles):

Good

1.1/100

NO2 (nitrogen dioxide):

Good

1.2/100

O3 (ozone):

Good

15.8/100

SO2 (sulfur dioxide):

Good

0.3/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

1.2/100

PM1 (ultrafine particles):

Good

1.5/100

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Frequently Asked Questions

Where is air quality worst on the Marquam Trail route?

Based on today's forecast, O3 is forecast at good levels along the route today (15.8/100). Air quality is at its worst after 0.0 km into the route. Airmine calculates exposure at 200m intervals along the course using satellite-derived atmospheric data.

Where is pollen highest on the Marquam Trail course?

Pollen exposure peaks at km 3.5 today. This changes through the season as different pollen species become active.

When is pollen worst during the Marquam Trail season?

Pollen seasons vary by location. Tree pollen (birch, alder) typically peaks in spring, while grass pollen rises in May-June.

How often is this forecast updated?

Updated four times daily. See the timestamp below for the most recent update.

Are pollen levels in Marquam Trail based on measurements or forecasts?

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 Marquam Trail, 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.

Levels show the highest exposure along the full route. Airmine uses satellite data to calculate pollen and air quality every 200 metres along each race route, updated four times daily.

Data provided by Airmine — Last update: 30 August 2026 at 08:36 CEST (Data is updated four times daily.)

This forecast is produced independently using Airmine's own atmospheric data and models.

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibiity.

Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.