Worst air pollution Extension 10 - Witbank, today and tomorrow
Today (20 September): Air quality in Extension 10 is moderate. AQI, PM2.5, SO2, and PM1 are moderate; PM10, NO2, and O3 are fair; CO and HCHO are good. Pollution peaks around 9:00 PM (PM1: 49.6/100).
Tomorrow (21 September 2026): Air quality in Extension 10 is poor. AQI worsens to poor; PM2.5 increases to poor; PM10 increases to moderate; NO2 increases to moderate; O3 decreases to good; PM1 increases to poor; all other pollutants stay as today. Pollution peaks around 7:00 AM (PM1: 68.7/100). Airmine updates local air quality forecasts four times daily.
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Extension 10 lies roughly 190 km west-southwest of Nelspruit. Vehicle traffic and coal mining and power station operations are the main contributors to air quality conditions at Extension 10, set on the dry Highveld plateau. Winter mornings can see emissions concentrate under a temperature inversion, while the wetter, windier summer months typically bring clearer air to the wider district. Much of the surrounding Highveld sees broadly the same seasonal pattern.
Today - 20 September | Pollution peaks at 21:00
AQI:
Moderate
49.6/100
PM2.5 (fine particles):
Moderate
47.6/100
PM10 (coarse particles):
Fair
24.9/100
NO2 (nitrogen dioxide):
Fair
37.5/100
O3 (ozone):
Fair
22.4/100
SO2 (sulfur dioxide):
Moderate
43.7/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
7.9/100
PM1 (ultrafine particles):
Moderate
49.6/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 07:00
AQI:
Poor
68.7/100
PM2.5 (fine particles):
Poor
63.6/100
PM10 (coarse particles):
Moderate
41.3/100
NO2 (nitrogen dioxide):
Moderate
58.0/100
O3 (ozone):
Good
19.3/100
SO2 (sulfur dioxide):
Moderate
55.3/100
CO (carbon monoxide):
Good
1.0/100
HCHO (formaldehyde):
Good
14.7/100
PM1 (ultrafine particles):
Poor
68.7/100
Other Landmarks in Witbank
Sports venues in Witbank
Frequently Asked Questions
Is air quality bad in Extension 10 right now?
On 20 September 2026, overall air quality in Extension 10 is moderate. AQI is the main air quality indicator at 49.6/100. Pollution peaks around 9:00 PM (PM1: 49.6/100).
Will air quality be worse tomorrow in Extension 10?
On 21 September 2026, air quality conditions in Extension 10 will be worse than today, with AQI forecast at poor at 68.7/100. Pollution peaks around 7:00 AM (PM1: 68.7/100).
When is air pollution at its worst in Extension 10?
The worst air quality at Extension 10 shows up on calm winter mornings, when emissions tied to coal mining and power station operations settle under the kind of low inversion that's common across the Highveld. That pattern breaks once the summer rains and stronger winds arrive from November onward. This is a familiar pattern across much of the Highveld.
Are air quality levels in Extension 10 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: 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.
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