Worst air pollution Boksburg, today and tomorrow
Today (20 September): Air quality in Boksburg is moderate. AQI, PM2.5, NO2, SO2, and PM1 are moderate; PM10, O3, and HCHO are fair; CO is good. Pollution peaks around 7:00 PM (NO2: 55.3/100).
Tomorrow (21 September 2026): Air quality in Boksburg is very poor. AQI worsens to very poor; PM2.5 increases to poor; PM10 increases to moderate; NO2 increases to very poor; HCHO increases to moderate; PM1 increases to very poor; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM1: 85.1/100). 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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Boksburg's air quality faces significant challenges as part of the East Rand industrial corridor east of Johannesburg, with heavy manufacturing, the R21 highway corridor, and the proximity to OR Tambo International Airport generating concentrated vehicle and aviation emissions. Winter Highveld temperature inversions concentrate emissions across the East Rand plateau, while the elevated 1,600-metre position provides some background dispersal advantage on windy days compared to lower-lying South African cities.
Today - 20 September | Pollution peaks at 19:00
AQI:
Moderate
55.3/100
PM2.5 (fine particles):
Moderate
50.2/100
PM10 (coarse particles):
Fair
31.6/100
NO2 (nitrogen dioxide):
Moderate
55.3/100
O3 (ozone):
Fair
23.9/100
SO2 (sulfur dioxide):
Moderate
40.7/100
CO (carbon monoxide):
Good
1.7/100
HCHO (formaldehyde):
Fair
34.8/100
PM1 (ultrafine particles):
Moderate
53.4/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 22:00
AQI:
Very poor
85.1/100
PM2.5 (fine particles):
Poor
78.1/100
PM10 (coarse particles):
Moderate
51.2/100
NO2 (nitrogen dioxide):
Very poor
82.4/100
O3 (ozone):
Fair
28.4/100
SO2 (sulfur dioxide):
Moderate
50.4/100
CO (carbon monoxide):
Good
3.1/100
HCHO (formaldehyde):
Moderate
50.0/100
PM1 (ultrafine particles):
Very poor
85.1/100
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Frequently Asked Questions
Is air quality bad in Boksburg right now?
On 20 September 2026, overall air quality in Boksburg is moderate. AQI is the main air quality indicator at 55.3/100. Pollution peaks around 7:00 PM (NO2: 55.3/100).
Will air quality be worse tomorrow in Boksburg?
On 21 September 2026, air quality conditions in Boksburg will be worse than today, with AQI forecast at very poor at 85.1/100. Pollution peaks around 10:00 PM (PM1: 85.1/100).
When is air pollution at its worst in Boksburg?
Air quality at Boksburg 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 Boksburg 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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