Worst air pollution Etwatwa - Benoni, today and tomorrow
Today (9 August): Air quality in Etwatwa is poor. AQI and O3 are poor; PM2.5, HCHO, and PM1 are medium; PM10, NO2, SO2, and CO are good. Pollution peaks around 2:00 PM (O3: 64.8/100).
Tomorrow (10 August 2026): Air quality in Etwatwa is fair. AQI improves to fair; PM2.5 decreases to good; O3 decreases to fair; HCHO increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (HCHO: 23.0/100). Airmine updates local air quality forecasts four times daily.
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Etwatwa lies roughly 30 km east of Johannesburg. At Etwatwa, vehicle traffic and government, finance, and commercial operations are the dominant local sources shaping air quality on the Highveld plateau. Calm winter mornings allow emissions to build up under a low inversion layer, while the arrival of summer rains and stronger winds generally restores clearer conditions. Similar patterns show up in most Highveld towns of a similar size.
Today - 9 August | Pollution peaks at 14:00
AQI:
Poor
64.8/100
PM2.5 (fine particles):
Medium
45.3/100
PM10 (coarse particles):
Good
17.9/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Poor
64.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Medium
52.5/100
PM1 (ultrafine particles):
Medium
50.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Fair
23.0/100
PM2.5 (fine particles):
Good
14.2/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
21.6/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Fair
23.0/100
PM1 (ultrafine particles):
Good
19.9/100
Other Landmarks in Benoni
Sports venues in Benoni
Frequently Asked Questions
Is air quality bad in Etwatwa right now?
On 9 August 2026, overall air quality in Etwatwa is poor. AQI is the main air quality indicator at 64.8/100. Pollution peaks around 2:00 PM (O3: 64.8/100).
Will air quality be worse tomorrow in Etwatwa?
On 10 August 2026, air quality conditions in Etwatwa will be better than today, with AQI forecast at fair at 23.0/100. Pollution peaks around 12:00 AM (HCHO: 23.0/100).
When is air pollution at its worst in Etwatwa?
Etwatwa sees its poorest air quality on windless winter mornings, when a low temperature inversion traps local emissions and those from government, finance, and commercial operations nearby. Summer's arrival from November brings stronger winds and thunderstorms that usually restore clearer conditions for months at a time, a seasonal pattern typical of the wider Highveld plateau.
Are air quality levels in Etwatwa 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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