Naledi, Johannesburg Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Naledi is poor. AQI, PM2.5, NO2, O3, and PM1 are poor; PM10, SO2, and HCHO are moderate; CO is good. Pollution peaks around 8:00 PM (PM1: 70.7/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Naledi is very poor. AQI worsens to very poor; O3 decreases to moderate; PM1 increases to very poor; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM1: 82.1/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Poor | 70.7/100 |
| PM2.5 (fine particles) | Poor | 61.9/100 |
| PM10 (coarse particles) | Moderate | 44.0/100 |
| NO2 (nitrogen dioxide) | Poor | 63.6/100 |
| O3 (ozone) | Poor | 68.0/100 |
| SO2 (sulfur dioxide) | Moderate | 40.2/100 |
| CO (carbon monoxide) | Good | 1.8/100 |
| HCHO (formaldehyde) | Moderate | 43.2/100 |
| PM1 (ultrafine particles) | Poor | 70.7/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Very poor | 82.1/100 |
| PM2.5 (fine particles) | Poor | 71.0/100 |
| PM10 (coarse particles) | Moderate | 49.0/100 |
| NO2 (nitrogen dioxide) | Poor | 69.2/100 |
| O3 (ozone) | Moderate | 53.2/100 |
| SO2 (sulfur dioxide) | Moderate | 47.5/100 |
| CO (carbon monoxide) | Good | 2.9/100 |
| HCHO (formaldehyde) | Moderate | 56.8/100 |
| PM1 (ultrafine particles) | Very poor | 82.1/100 |
Local Environmental Conditions
With buildings covering much of the area around this part of Johannesburg, traffic and other urban emissions are the biggest local influence on air quality. The open grass and scrubland around the area can add dust in dry weather and smoke from occasional fires. Pockets of trees and green space help filter a small share of the particles from traffic.
Particle levels tend to be highest from June to August, when home heating and traffic add more emissions and cold, calm spells at around 9°C can leave a light winter haze over the city. Summer sun from November to March cooks traffic fumes into ozone, especially in the warmest month, which averages 22°C.
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Frequently Asked Questions About Air Quality in Gauteng
Is air quality bad in Naledi right now?
On 10 October 2026, overall air quality in Naledi is poor. AQI is the main air quality indicator at 70.7/100. Pollution peaks around 8:00 PM (PM1: 70.7/100).
Will air quality be worse tomorrow in Naledi?
On 11 October 2026, air quality conditions in Naledi will be worse than today, with AQI forecast at very poor at 82.1/100. Pollution peaks around 10:00 PM (PM1: 82.1/100).
When is air pollution at its worst in Naledi?
Particle levels tend to be highest from June to August, when home heating and traffic add more emissions and cold, calm spells at around 9°C can leave a light winter haze over the city. Summer sun from November to March cooks traffic fumes into ozone, especially in the warmest month, which averages 22°C.
Are air quality levels in Naledi 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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |