Worst air pollution Villieria - Pretoria, today and tomorrow

Today (9 August): Air quality in Villieria is poor. AQI and SO2 are poor; O3 is fair; PM2.5, NO2, HCHO, and PM1 are medium; PM10 and CO are good. Pollution peaks around 2:00 AM (SO2: 65.4/100).
Tomorrow (10 August 2026): Air quality in Villieria is fair. AQI improves to medium; PM2.5 increases to fair; SO2 decreases to medium; HCHO increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 PM (SO2: 50.3/100). 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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Villieria lies roughly 50 km north-northeast of Johannesburg. Villieria's air quality reflects its position on the Highveld plateau, with vehicle traffic and government, finance, and commercial operations contributing to elevated PM2.5 at times. Winter temperature inversions can concentrate emissions close to the ground, while summer thunderstorms and stronger winds generally help clear the air across the open plateau. Conditions like these are common across much of the Highveld plateau.

Today - 9 August | Pollution peaks at 02:00

AQI:

Poor

65.4/100

PM2.5 (fine particles):

Medium

45.7/100

PM10 (coarse particles):

Good

18.3/100

NO2 (nitrogen dioxide):

Medium

52.8/100

O3 (ozone):

Fair

38.3/100

SO2 (sulfur dioxide):

Poor

65.4/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Medium

42.5/100

PM1 (ultrafine particles):

Medium

50.7/100

Levels show the poorest local air quality during the day

Tomorrow - 10 August | Pollution peaks at 20:00

AQI:

Medium

50.3/100

PM2.5 (fine particles):

Fair

28.7/100

PM10 (coarse particles):

Good

8.2/100

NO2 (nitrogen dioxide):

Medium

47.0/100

O3 (ozone):

Fair

20.3/100

SO2 (sulfur dioxide):

Medium

50.3/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Fair

23.3/100

PM1 (ultrafine particles):

Fair

35.0/100

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Frequently Asked Questions

Is air quality bad in Villieria right now?

On 9 August 2026, overall air quality in Villieria is poor. AQI is the main air quality indicator at 65.4/100. Pollution peaks around 2:00 AM (SO2: 65.4/100).

Will air quality be worse tomorrow in Villieria?

On 10 August 2026, air quality conditions in Villieria will be better than today, with PM1 forecast at fair at 35.0/100. Pollution peaks around 8:00 PM (SO2: 50.3/100).

When is air pollution at its worst in Villieria?

At Villieria, the poorest air quality usually occurs on still winter mornings, when smoke and emissions from government, finance, and commercial operations accumulate under a low inversion typical of the Highveld. From November, summer rains and afternoon winds generally restore clearer conditions for the rest of the year, a seasonal pattern typical of the wider Highveld plateau.

Are air quality levels in Villieria 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: 10 August 2026 at 02:34 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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