Worst air pollution Bellville Velodrome - Cape Town, today and tomorrow
Today (9 August): Air quality in Bellville Velodrome is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (HCHO: 16.8/100).
Tomorrow (10 August 2026): Air quality in Bellville Velodrome is fair. AQI worsens to fair; SO2 increases to fair; HCHO increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 AM (SO2: 21.9/100). Airmine updates local air quality forecasts four times daily.
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Bellville Velodrome lies roughly 20 km east of Cape Town. Vehicle traffic and the city bowl, harbour, and southern suburbs are the constant background sources of local pollution at Bellville Velodrome, but the Cape's wind pattern does most of the actual air quality work. Only when that wind drops, mainly on winter mornings, does pollution get a chance to accumulate. The wider Cape region generally follows this same rough pattern.
Today - 9 August | Pollution peaks at 04:00
AQI:
Good
16.8/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Good
5.7/100
O3 (ozone):
Good
16.5/100
SO2 (sulfur dioxide):
Good
12.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.8/100
PM1 (ultrafine particles):
Good
7.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 08:00
AQI:
Fair
21.9/100
PM2.5 (fine particles):
Good
15.9/100
PM10 (coarse particles):
Good
5.8/100
NO2 (nitrogen dioxide):
Good
12.7/100
O3 (ozone):
Good
16.7/100
SO2 (sulfur dioxide):
Fair
21.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
20.5/100
PM1 (ultrafine particles):
Good
15.0/100
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Frequently Asked Questions
Is air quality bad in Bellville Velodrome right now?
On 9 August 2026, overall air quality in Bellville Velodrome is good. AQI is the main air quality indicator at 16.8/100. Pollution peaks around 4:00 AM (HCHO: 16.8/100).
Will air quality be worse tomorrow in Bellville Velodrome?
On 10 August 2026, air quality conditions in Bellville Velodrome will be worse than today, with AQI forecast at fair at 21.9/100. Pollution peaks around 8:00 AM (SO2: 21.9/100).
When is air pollution at its worst in Bellville Velodrome?
For golfers at Bellville Velodrome, poor air quality is mostly a winter-calm-day issue, tied to brief lulls in the Cape's wind that let emissions from the city bowl, harbour, and southern suburbs build up. Spring and summer see the southeaster return in force, restoring the usually excellent conditions. This is a familiar pattern across much of the Cape.
Are air quality levels in Bellville Velodrome 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
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.
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