Gilloolys parkrun - Pollen and Air Quality Forecast for Today
Pollen levels are low to moderate today, with mugwort, cypress, plane, eucalyptus, and oak as the main active species. Air quality along the route is fair. SO2 (31.8/100), HCHO (29.6/100), and PM1 (20.2/100) are fair. The remaining pollutants stay at good 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 0.9 km after start. Pollen exposure peaks at 3.4 km after start.
To prepare for your activity, use the Airmine app to check the Gilloolys parkrun 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.
Gilloolys parkrun takes place around a reservoir in the East Rand of Johannesburg featuring acacia, eucalyptus, and open grassland along the course. Grass pollen dominates during the summer rainfall season from November to March. Air quality is generally reasonable but can be affected by industrial emissions from the East Rand and Highveld haze during calm winter conditions when atmospheric inversions trap pollutants.
Route map
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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):
Moderate
26/100
Eucalyptus (Myrtaceae):
Low
17/100
Grass (Poaceae):
None
0/100
Oak (Quercus):
Low
9/100
Willow (Salicaceae):
None
0/100
Mugwort (Artemisia):
Moderate
35/100
Mulberry (Morus):
None
0/100
Plane (Platanus):
Low
23/100
Nettle (Urtica):
None
0/100
Ragweed (Ambrosia):
None
0/100
Goosefoot (Amaranthaceae):
None
0/100
Air Quality
AQI:
Fair
34.2/100
PM2.5 (fine particles):
Good
15.2/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
16.9/100
O3 (ozone):
Good
19.7/100
SO2 (sulfur dioxide):
Fair
31.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
29.6/100
PM1 (ultrafine particles):
Fair
20.2/100
Other routes:
Frequently Asked Questions
Where is air quality worst on the Gilloolys parkrun route?
Based on today's forecast, SO2 is forecast at fair levels along the route today (31.8/100). Air quality is at its worst after 0.9 km into the route. Airmine calculates exposure at 200m intervals along the course using satellite-derived atmospheric data.
Where is pollen highest on the Gilloolys parkrun course?
Pollen exposure peaks at km 0.9 today. This changes through the season as different pollen species become active.
When is pollen worst during the Gilloolys parkrun 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 Gilloolys parkrun 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 Gilloolys parkrun, 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.