Worst air pollution Faerie Glen - Pretoria, today and tomorrow

Today (20 September): Air quality in Faerie Glen is moderate. AQI and PM1 are moderate; PM2.5 and NO2 are fair; PM10, O3, SO2, CO, and HCHO are good. Pollution peaks around 7:00 AM (PM1: 42.4/100).
Tomorrow (21 September 2026): Air quality in Faerie Glen is poor. AQI worsens to poor; PM2.5 increases to moderate; PM10 increases to fair; NO2 increases to moderate; O3 increases to fair; SO2 increases to moderate; HCHO increases to fair; PM1 increases to poor; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM1: 60.5/100). 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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Faerie Glen lies roughly 50 km north-northeast of Johannesburg. Vehicle traffic and government, finance, and commercial operations are the main contributors to air quality conditions at Faerie Glen, 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 07:00

AQI:

Moderate

42.4/100

PM2.5 (fine particles):

Fair

37.3/100

PM10 (coarse particles):

Good

16.7/100

NO2 (nitrogen dioxide):

Fair

20.4/100

O3 (ozone):

Good

19.1/100

SO2 (sulfur dioxide):

Good

12.1/100

CO (carbon monoxide):

Good

0.8/100

HCHO (formaldehyde):

Good

12.3/100

PM1 (ultrafine particles):

Moderate

42.4/100

Levels show the poorest local air quality during the day

Tomorrow - 21 September | Pollution peaks at 22:00

AQI:

Poor

60.5/100

PM2.5 (fine particles):

Moderate

51.1/100

PM10 (coarse particles):

Fair

35.9/100

NO2 (nitrogen dioxide):

Moderate

43.4/100

O3 (ozone):

Fair

24.3/100

SO2 (sulfur dioxide):

Moderate

40.6/100

CO (carbon monoxide):

Good

1.8/100

HCHO (formaldehyde):

Fair

28.6/100

PM1 (ultrafine particles):

Poor

60.5/100

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Frequently Asked Questions

Is air quality bad in Faerie Glen right now?

On 20 September 2026, overall air quality in Faerie Glen is moderate. AQI is the main air quality indicator at 42.4/100. Pollution peaks around 7:00 AM (PM1: 42.4/100).

Will air quality be worse tomorrow in Faerie Glen?

On 21 September 2026, air quality conditions in Faerie Glen will be worse than today, with AQI forecast at poor at 60.5/100. Pollution peaks around 10:00 PM (PM1: 60.5/100).

When is air pollution at its worst in Faerie Glen?

The worst air quality at Faerie Glen shows up on calm winter mornings, when emissions tied to government, finance, and commercial 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 Faerie Glen 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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