Air Quality Lab — Welkom, South Africa
Air Quality Profile·
Welkom reports an annual PM2.5 of 19.7 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Welkom
South Africa
South AfricaAnnual Average
ModerateWHO annual classification
19.7µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1717 µg/m³ — Moderate
1616 µg/m³ — Moderate
1515 µg/m³ — Fair
1313 µg/m³ — Fair
1818 µg/m³ — Moderate
2222 µg/m³ — Moderate
3131 µg/m³ — Poor
2727 µg/m³ — Poor
2525 µg/m³ — Moderate
1919 µg/m³ — Moderate
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1717 µg/m³ — Moderate
1616 µg/m³ — Moderate
1515 µg/m³ — Fair
1313 µg/m³ — Fair
1818 µg/m³ — Moderate
2222 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
3131 µg/m³ — Poor
2727 µg/m³ — Poor
2525 µg/m³ — Moderate
1919 µg/m³ — Moderate
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
Best months: Feb–AprWorst months: Jul–Sep
Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across South Africa
Welkom: 19.7 µg/m³. Typical range in South Africa: 12.8–23.3 µg/m³. Low anchor: Port Elizabeth, 7.3 µg/m³. High anchor: Diepsloot, 162.1 µg/m³.
265 cities tracked