Worst air pollution Claremont - Cape Town, today and tomorrow
Today (20 September): Air quality in Claremont is poor. AQI and PM1 are poor; PM2.5 and PM10 are moderate; NO2, O3, SO2, and HCHO are fair; CO is good. Pollution peaks around 12:00 PM (PM1: 61.2/100).
Tomorrow (21 September 2026): Air quality in Claremont is moderate. AQI improves to moderate; PM10 decreases to fair; NO2 increases to moderate; O3 decreases to good; PM1 decreases to moderate; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM1: 59.8/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
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.
At Claremont, it's really the Cape's wind, more than anything else, that determines air quality day to day, with vehicle traffic and the city bowl, harbour, and southern suburbs as the underlying local sources. Calm winter mornings are the exception, when the southeaster briefly stands down and emissions can build up. This is roughly what you'd expect anywhere along this stretch of the Cape.
Today - 20 September | Pollution peaks at 12:00
AQI:
Poor
61.2/100
PM2.5 (fine particles):
Moderate
56.9/100
PM10 (coarse particles):
Moderate
43.0/100
NO2 (nitrogen dioxide):
Fair
32.5/100
O3 (ozone):
Fair
24.7/100
SO2 (sulfur dioxide):
Fair
33.6/100
CO (carbon monoxide):
Good
1.7/100
HCHO (formaldehyde):
Fair
27.2/100
PM1 (ultrafine particles):
Poor
61.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 23:00
AQI:
Moderate
59.8/100
PM2.5 (fine particles):
Moderate
52.4/100
PM10 (coarse particles):
Fair
39.4/100
NO2 (nitrogen dioxide):
Moderate
53.3/100
O3 (ozone):
Good
17.3/100
SO2 (sulfur dioxide):
Fair
39.8/100
CO (carbon monoxide):
Good
2.4/100
HCHO (formaldehyde):
Fair
29.8/100
PM1 (ultrafine particles):
Moderate
59.8/100
Other Landmarks in Cape Town
Sports venues in Cape Town
Frequently Asked Questions
Is air quality bad in Claremont right now?
On 20 September 2026, overall air quality in Claremont is poor. AQI is the main air quality indicator at 61.2/100. Pollution peaks around 12:00 PM (PM1: 61.2/100).
Will air quality be worse tomorrow in Claremont?
On 21 September 2026, air quality conditions in Claremont will be better than today, with AQI forecast at moderate at 59.8/100. Pollution peaks around 11:00 PM (PM1: 59.8/100).
When is air pollution at its worst in Claremont?
Ask locals at Claremont when the air is worst, and most would say calm winter days, when emissions tied to the city bowl, harbour, and southern suburbs aren't cleared by the usual Cape wind. That wind reliably returns through spring and summer, keeping conditions consistently good the rest of the time. This is a familiar pattern across much of the Cape.
Are air quality levels in Claremont 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.
Want to see air quality forecasts for other cities in South Africa?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 20 September 2026 at 14:33 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.
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.
Get the full experience in the Airmine app.