Air quality in Emfuleni Local Municipality, Gauteng, South Africa today

Mr. Duck’s Air Quality Score

Unhealthy for sensitive groups for Emfuleni Local Municipality, Gauteng, South Africa

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality today in Emfuleni Local Municipality is classified as USG. The primary pollutant measured is PM2.5, with a reported concentration of 42.94 µg/m³ based on nine valid observations from OpenAQ data.

Data for this assessment are limited to the available PM2.5 reading; no PM10 value was provided. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.

Latest sensor values

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

What the data includes

The Emfuleni Local Municipality data set contains measurements for eight air‑quality parameters – carbon monoxide (CO), nitrogen oxide (NO), nitrogen dioxide (NO₂), total nitrogen oxides (NOX), ozone (O₃), particulate matter ≤ 10 µm (PM10), particulate matter ≤ 2.5 µm (PM2.5), sulphur dioxide (SO₂) – together with relative humidity and temperature, although the latter two are not shown in the summary values. The collection comprises 54 individual rows drawn from seven monitoring stations across the municipality.

The most recent observation in the whole set is a PM2.5 reading of 38.34 µg/m³ recorded at North‑West University Vanderbijilpark Campus on 2026‑02‑10 18:00 UTC. All other pollutants have their latest values dated 2024‑03‑12, meaning that for CO, NO, NOX, NO₂, O₃ and SO₂ the freshest data are over two years old. Median concentrations show a modest spread: PM2.5 median is 25.74 µg/m³ with a range from 0.20 to 42.94 µg/m³; NO₂ median sits at 0.0143 ppm (0.003 to 0.021 ppm); O₃ median is 0.0346 ppm (0.0102 to 0.0567 ppm). For the particulate fractions, PM10 median is 32.73 µg/m³ (0 to 60.04 µg/m³), while SO₂ median is 0.0234 ppm (0.00258 to 0.0415 ppm).

Because most pollutant streams rely on data that are more than two years old, the snapshot does not capture current day‑to‑day variations across Emfuleni. The dataset also shows uneven coverage: PM2.5 has a dedicated recent entry, whereas other gases and particles are only represented by older records. Consequently, while the numbers give an idea of typical levels recorded at the seven sites, they should be interpreted with caution as conditions can differ markedly by location and time.

Learn more about sources and filtering: About the data.

Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)

Latest sensor values (bars)

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

Data notes

The data shown reflects nine valid measurements and is updated within 3 days, with the most recent reading recorded on 10 February 2026 at 18:00 UTC. This snapshot provides a current view of air quality across Emfuleni Local Municipality but conditions can differ by specific neighbourhoods and times of day, so local variations may exist.

OpenAQ station rows