Worst air pollution Honeydew - Johannesburg, today and tomorrow
Today (9 August): Air quality in Honeydew is very poor. AQI and SO2 are very poor; PM2.5, HCHO, and PM1 are poor; PM10 is fair; NO2 and O3 are medium; CO is good. Pollution peaks around 2:00 AM (SO2: 81.0/100).
Tomorrow (10 August 2026): Air quality in Honeydew is fair. AQI improves to medium; PM2.5 decreases to fair; PM10 decreases to good; NO2 increases to fair; O3 increases to fair; SO2 decreases to medium; HCHO decreases to fair; PM1 decreases to fair; all other pollutants stay as today. Pollution peaks around 9:00 AM (SO2: 41.7/100). Airmine updates local air quality forecasts four times daily.
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Honeydew lies roughly 10 km southwest of Johannesburg. Vehicle traffic and government, finance, and commercial operations are the main contributors to air quality conditions at Honeydew, 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 - 9 August | Pollution peaks at 02:00
AQI:
Very poor
81.0/100
PM2.5 (fine particles):
Poor
61.8/100
PM10 (coarse particles):
Fair
34.6/100
NO2 (nitrogen dioxide):
Medium
56.3/100
O3 (ozone):
Medium
59.8/100
SO2 (sulfur dioxide):
Very poor
81.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Poor
68.2/100
PM1 (ultrafine particles):
Poor
71.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Medium
41.7/100
PM2.5 (fine particles):
Fair
29.3/100
PM10 (coarse particles):
Good
8.3/100
NO2 (nitrogen dioxide):
Fair
28.7/100
O3 (ozone):
Fair
29.2/100
SO2 (sulfur dioxide):
Medium
41.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
26.8/100
PM1 (ultrafine particles):
Fair
36.2/100
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Frequently Asked Questions
Is air quality bad in Honeydew right now?
On 9 August 2026, overall air quality in Honeydew is very poor. AQI is the main air quality indicator at 81.0/100. Pollution peaks around 2:00 AM (SO2: 81.0/100).
Will air quality be worse tomorrow in Honeydew?
On 10 August 2026, air quality conditions in Honeydew will be better than today, with PM1 forecast at fair at 36.2/100. Pollution peaks around 9:00 AM (SO2: 41.7/100).
When is air pollution at its worst in Honeydew?
The worst air quality at Honeydew 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 Honeydew 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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