Worst air pollution Doornfontein - Johannesburg, today and tomorrow
Today (9 August): Air quality in Doornfontein is very poor. AQI and SO2 are very poor; PM2.5, NO2, HCHO, and PM1 are poor; PM10 is fair; O3 is medium; CO is good. Pollution peaks around 2:00 AM (SO2: 100/100).
Tomorrow (10 August 2026): Air quality in Doornfontein is fair. AQI improves to medium; PM2.5 decreases to fair; PM10 decreases to good; NO2 decreases to medium; O3 increases to fair; SO2 decreases to medium; HCHO decreases to fair; PM1 decreases to fair; all other pollutants stay as today. Pollution peaks around 9:00 AM (SO2: 48.1/100). Airmine updates local air quality forecasts four times daily.
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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 - 9 August | Pollution peaks at 02:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Poor
65.0/100
PM10 (coarse particles):
Fair
38.0/100
NO2 (nitrogen dioxide):
Poor
72.7/100
O3 (ozone):
Medium
59.8/100
SO2 (sulfur dioxide):
Very poor
100/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Poor
68.2/100
PM1 (ultrafine particles):
Poor
76.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Medium
48.1/100
PM2.5 (fine particles):
Fair
32.3/100
PM10 (coarse particles):
Good
9.2/100
NO2 (nitrogen dioxide):
Medium
40.9/100
O3 (ozone):
Fair
29.2/100
SO2 (sulfur dioxide):
Medium
48.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
26.8/100
PM1 (ultrafine particles):
Fair
39.6/100
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Frequently Asked Questions
Is air quality bad in Doornfontein right now?
On 9 August 2026, overall air quality in Doornfontein is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 2:00 AM (SO2: 100/100).
Will air quality be worse tomorrow in Doornfontein?
On 10 August 2026, air quality conditions in Doornfontein will be better than today, with PM1 forecast at fair at 39.6/100. Pollution peaks around 9:00 AM (SO2: 48.1/100).
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: 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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