Worst air pollution Stellenbosch, today and tomorrow
Today (16 July): Air quality in Stellenbosch is fair. NO2 and O3 are fair; AQI, PM2.5, SO2, HCHO, and PM1 are medium; PM10 and CO are good. Pollution peaks around 12:00 AM (PM1: 47.8/100).
Tomorrow (17 July 2026): Air quality in Stellenbosch is fair. PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM1: 53.9/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Stellenbosch's air quality benefits from its Western Cape Winelands position, with consistent Atlantic southeasterly and northwesterly winds providing reliable ventilation through the Eerste River valley. Vehicle traffic on the R44 and the surrounding wine, fruit, and Stellenbosch University campus operations are the primary local sources, while the surrounding Helderberg, Jonkershoek, and Simonsberg mountains create topographic variation and the valley position provides generally moderate conditions throughout the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Medium
47.8/100
PM2.5 (fine particles):
Medium
43.7/100
PM10 (coarse particles):
Good
16.1/100
NO2 (nitrogen dioxide):
Fair
22.3/100
O3 (ozone):
Fair
25.1/100
SO2 (sulfur dioxide):
Medium
42.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Medium
45.3/100
PM1 (ultrafine particles):
Medium
47.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Medium
53.9/100
PM2.5 (fine particles):
Medium
47.9/100
PM10 (coarse particles):
Fair
20.9/100
NO2 (nitrogen dioxide):
Fair
22.1/100
O3 (ozone):
Fair
22.6/100
SO2 (sulfur dioxide):
Medium
42.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Medium
51.6/100
PM1 (ultrafine particles):
Medium
53.9/100
Pollen forecast in Stellenbosch
View pollen forecastFrequently Asked Questions
Is air quality bad in Stellenbosch right now?
On 16 July 2026, overall air quality in Stellenbosch is fair. O3 is the main pollutant at 25.1/100. Pollution peaks around 12:00 AM (PM1: 47.8/100).
Will air quality be worse tomorrow in Stellenbosch?
On 17 July 2026, air quality conditions in Stellenbosch will be similar to today, with O3 forecast at fair at 22.6/100. Pollution peaks around 11:00 PM (PM1: 53.9/100).
When is air pollution at its worst in Stellenbosch?
At Stellenbosch, occasional poor air quality tends to occur on calm winter days from June to August, when the Cape's usual wind drops off and local emissions can build up overnight around the town. Through spring and summer, the reliable southeasterly wind returns and generally keeps particulate levels low and well dispersed across the wider region.
Are air quality levels in Stellenbosch based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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 responsibility.
For long term forecasts and maps, see the Airmine app