Janteloppet Summer Edition - Pollen and Air Quality Forecast for Today

Race day: 22 Aug 2026

Distance: 7 km

Pollen levels are low to medium today, with cypress, grass, and birch as the main active species. PM2.5 levels along the route are low today at 2/100, well within safe limits for outdoor exercise. Based on Airmine's forecast, which uses satellite data to calculate exposure every 200 metres along the route, air quality is at its worst 0.5 km after start. Pollen exposure peaks at 0.0 km after start.

For long term forecasts and maps, see the Airmine app

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

Janteloppet Summer Edition runs through the Nordmarka forest trails north of Oslo on a popular summer edition of this classic Norwegian running series, where birch, pine, and spruce woodland frame the forested trail route.

Today - 25 June

Pollen

Alder (Alnus):

None

0/100

Birch (Betula):

Low

4/100

Hazel (Corylus):

None

0/100

Cypress (Cupressaceae):

Medium

43/100

Grass (Poaceae):

Medium

35/100

Willow (Salicaceae):

None

0/100

Oak (Quercus):

None

0/100

Air Quality

PM2.5 (fine particles):

Good

2.0/100

NO2 (nitrogen dioxide):

Good

7.8/100

O3 (ozone):

None

PM10 (coarse particles):

Good

0.6/100

SO2 (sulfur dioxide):

Good

0.5/100

CO (carbon monoxide):

Good

0.0/100

Levels show the highest exposure along the full route

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Frequently Asked Questions

Where is air quality worst on the Janteloppet Summer Edition route?

Based on today's forecast, Aqi levels are at their highest 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 Janteloppet Summer Edition course?

Pollen exposure peaks at km 6.7 today. This changes through the season as different pollen species become active.

When is pollen worst during the Janteloppet Summer Edition season?

August coincides with peak cypress season. Grass pollen typically 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 Janteloppet Summer Edition 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 Janteloppet Summer Edition, 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: 25 June 2026 at 00:00 CET (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.