Worst air pollution Doornfontein - Johannesburg, today and tomorrow
Today (30 August): Air quality in Doornfontein is moderate. AQI, NO2, O3, SO2, HCHO, and PM1 are moderate; PM2.5 is fair; PM10 and CO are good. Pollution peaks around 7:00 AM (HCHO: 57.2/100).
Tomorrow (31 August 2026): Air quality in Doornfontein is poor. AQI worsens to poor; PM2.5 increases to moderate; PM10 increases to fair; NO2 increases to poor; SO2 increases to poor; all other pollutants stay as today. Pollution peaks around 10:00 PM (SO2: 74.7/100). 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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Air quality at Doornfontein is shaped by its Highveld plateau setting, where vehicle traffic and government, finance, and commercial operations are the main local sources of particulate pollution. Dry winter mornings often see temperature inversions trap emissions near the surface, while summer rains and afternoon winds typically improve dispersal conditions. This mirrors what's typical for towns across the wider plateau region.
Today - 30 August | Pollution peaks at 07:00
AQI:
Moderate
57.2/100
PM2.5 (fine particles):
Fair
39.6/100
PM10 (coarse particles):
Good
11.5/100
NO2 (nitrogen dioxide):
Moderate
46.6/100
O3 (ozone):
Moderate
46.2/100
SO2 (sulfur dioxide):
Moderate
56.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Moderate
57.2/100
PM1 (ultrafine particles):
Moderate
42.3/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 22:00
AQI:
Poor
74.7/100
PM2.5 (fine particles):
Moderate
46.9/100
PM10 (coarse particles):
Fair
20.1/100
NO2 (nitrogen dioxide):
Poor
66.1/100
O3 (ozone):
Moderate
48.6/100
SO2 (sulfur dioxide):
Poor
74.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Moderate
52.3/100
PM1 (ultrafine particles):
Moderate
52.3/100
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Frequently Asked Questions
Is air quality bad in Doornfontein right now?
On 30 August 2026, overall air quality in Doornfontein is moderate. AQI is the main air quality indicator at 57.2/100. Pollution peaks around 7:00 AM (HCHO: 57.2/100).
Will air quality be worse tomorrow in Doornfontein?
On 31 August 2026, air quality conditions in Doornfontein will be worse than today, with AQI forecast at poor at 74.7/100. Pollution peaks around 10:00 PM (SO2: 74.7/100).
When is air pollution at its worst in Doornfontein?
The dry Highveld winter brings the worst air quality to Doornfontein, as calm mornings let emissions from government, finance, and commercial operations linger close to the ground. Once summer rains arrive around November, stronger winds and regular storms typically clear the air across the wider plateau, a seasonal pattern typical of the wider Highveld plateau.
Are air quality levels in Doornfontein 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: 30 August 2026 at 14:32 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.
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