Worst air pollution Randburg, today and tomorrow
Today (9 August): Air quality in Randburg is poor. AQI, SO2, and HCHO are poor; PM10 is fair; PM2.5, NO2, O3, and PM1 are medium; CO is good. Pollution peaks around 2:00 AM (SO2: 66.8/100).
Tomorrow (10 August 2026): Air quality in Randburg is fair. AQI improves to medium; PM2.5 increases to fair; PM10 decreases to good; NO2 increases to fair; O3 increases to fair; SO2 decreases to medium; HCHO decreases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 AM (SO2: 40.2/100). Airmine updates local air quality forecasts four times daily.
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Randburg's air quality reflects its position in the northern Johannesburg suburban corridor, with vehicle traffic on the N14 and surrounding arterials and the proximity to the Highveld industrial complex contributing elevated PM2.5. Winter Highveld temperature inversions concentrate vehicle and wood-burning emissions across the Johannesburg plateau, while the elevated 1,700-metre position generally aids background dispersal compared to lower-lying South African cities on windy days.
Today - 9 August | Pollution peaks at 02:00
AQI:
Poor
66.8/100
PM2.5 (fine particles):
Medium
52.1/100
PM10 (coarse particles):
Fair
25.1/100
NO2 (nitrogen dioxide):
Medium
48.4/100
O3 (ozone):
Medium
49.5/100
SO2 (sulfur dioxide):
Poor
66.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Poor
63.5/100
PM1 (ultrafine particles):
Medium
59.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Medium
40.2/100
PM2.5 (fine particles):
Fair
25.2/100
PM10 (coarse particles):
Good
7.1/100
NO2 (nitrogen dioxide):
Fair
28.5/100
O3 (ozone):
Fair
20.9/100
SO2 (sulfur dioxide):
Medium
40.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
24.2/100
PM1 (ultrafine particles):
Fair
31.4/100
Pollen forecast in Randburg
View pollen forecastFrequently Asked Questions
Is air quality bad in Randburg right now?
On 9 August 2026, overall air quality in Randburg is poor. AQI is the main air quality indicator at 66.8/100. Pollution peaks around 2:00 AM (SO2: 66.8/100).
Will air quality be worse tomorrow in Randburg?
On 10 August 2026, air quality conditions in Randburg will be better than today, with PM1 forecast at fair at 31.4/100. Pollution peaks around 9:00 AM (SO2: 40.2/100).
When is air pollution at its worst in Randburg?
Air quality at Randburg is most likely to dip during the dry winter months from May to August, when temperature inversions trap vehicle and household emissions close to the ground on still mornings. Conditions improve markedly once the summer rains arrive from November, as stronger winds and regular thunderstorms clear the plateau air for the rest of the season.
Are air quality levels in Randburg 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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