Worst air pollution Odendaalsrus, today and tomorrow
Today (20 September): Air quality in Odendaalsrus is moderate. AQI, PM2.5, and PM1 are moderate; PM10 and SO2 are fair; NO2, O3, CO, and HCHO are good. Pollution peaks around 12:00 AM (PM2.5: 51.1/100).
Tomorrow (21 September 2026): Air quality in Odendaalsrus is moderate. SO2 decreases to good; all other pollutants stay as today. Pollution peaks around 7:00 AM (PM2.5: 50.6/100). 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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Odendaalsrus' air quality reflects the Free State Goldfields position at 1,358 metres, with the Harmony Gold and surrounding mining operations generating elevated mineral dust PM10 and cyanide byproduct aerosols alongside vehicle traffic on surrounding roads. Winter Highveld temperature inversions concentrate mining dust and vehicle emissions, while the elevated plateau position aids background dispersal on windy summer days and the gold mining landscape dominates the local air quality environment throughout the year.
Today - 20 September | Pollution peaks at 00:00
AQI:
Moderate
51.1/100
PM2.5 (fine particles):
Moderate
51.1/100
PM10 (coarse particles):
Fair
24.1/100
NO2 (nitrogen dioxide):
Good
16.6/100
O3 (ozone):
Good
18.1/100
SO2 (sulfur dioxide):
Fair
23.8/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
9.9/100
PM1 (ultrafine particles):
Moderate
48.3/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 07:00
AQI:
Moderate
50.6/100
PM2.5 (fine particles):
Moderate
50.6/100
PM10 (coarse particles):
Fair
24.6/100
NO2 (nitrogen dioxide):
Good
17.3/100
O3 (ozone):
Good
18.4/100
SO2 (sulfur dioxide):
Good
11.3/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
9.7/100
PM1 (ultrafine particles):
Moderate
48.7/100
Pollen forecast in Odendaalsrus
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Frequently Asked Questions
Is air quality bad in Odendaalsrus right now?
On 20 September 2026, overall air quality in Odendaalsrus is moderate. AQI is the main air quality indicator at 51.1/100. Pollution peaks around 12:00 AM (PM2.5: 51.1/100).
Will air quality be worse tomorrow in Odendaalsrus?
On 21 September 2026, air quality conditions in Odendaalsrus will be similar to today, with AQI forecast at moderate at 50.6/100. Pollution peaks around 7:00 AM (PM2.5: 50.6/100).
When is air pollution at its worst in Odendaalsrus?
At Odendaalsrus, the poorest air quality usually occurs on still winter mornings from May to August, when smoke and vehicle emissions accumulate under a low temperature inversion typical of the Highveld plateau. From November onward, summer rains and afternoon winds generally restore clearer conditions that last through much of the warmer part of the year.
Are air quality levels in Odendaalsrus 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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