SmogRank / South Africa / Mpumalanga

Air quality in Secunda

Mpumalanga, South Africa. PM2.5 from 2 reference monitors, updated hourly.

37US AQI
Good

Mean for 1 Oct, the most recent day with readings, 0.4× the WHO 24-hour guideline. No hourly readings have reached us since; some networks publish days late. PM2.5 6.6 µg/m³.

Rank, worst first

24 hours–not enough data
7 days–not enough data
30 days–not enough data
This year–not enough data

The last 12 months, day by day

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data2026-05-26: no data2026-05-27: no data2026-05-28: no data2026-05-29: no data2026-05-30: no data2026-05-31: no data2026-06-01: no data2026-06-02: no data2026-06-03: no data2026-06-04: no data2026-06-05: no data2026-06-06: no data2026-06-07: no data2026-06-08: no data2026-06-09: no data2026-06-10: no data2026-06-11: no data2026-06-12: no data2026-06-13: no data2026-06-14: no data2026-06-15: no data2026-06-16: no data2026-06-17: no data2026-06-18: no data2026-06-19: no data2026-06-20: no data2026-06-21: no data2026-06-22: no data2026-06-23: no data2026-06-24: no data2026-06-25: no data2026-06-26: no data2026-06-27: no data2026-06-28: no data2026-06-29: no data2026-06-30: no data2026-07-01: no data2026-07-02: no data2026-07-03: no data2026-07-04: no data2026-07-05: no data2026-07-06: no data2026-07-07: no data2026-07-08: no data2026-07-09: no data2026-07-10: no data2026-07-11: no data2026-07-12: no data2026-07-13: no data2026-07-14: no data2026-07-15: no data2026-07-16: no data2026-07-17: no data2026-07-18: no data2026-07-19: no data2026-07-20: no data2026-07-21: no data2026-07-22: no data2026-07-23: no data2026-07-24: no data2026-07-25: no data2026-07-26: no data2026-07-27: no data2026-07-28: no data2026-07-29: no data2026-07-30: no data2026-07-31: no data2026-08-01: no data2026-08-02: no data2026-08-03: no data2026-08-04: no data2026-08-05: no data2026-08-06: no data2026-08-07: no data2026-08-08: no data2026-08-09: no data2026-08-10: no data2026-08-11: no data2026-08-12: 2.9 µg/m³2026-08-13: 5.5 µg/m³2026-08-14: 15.3 µg/m³2026-08-15: 18.4 µg/m³2026-08-16: 26.5 µg/m³2026-08-17: 23.9 µg/m³2026-08-18: 17.4 µg/m³2026-08-19: 34.6 µg/m³2026-08-20: 37.9 µg/m³2026-08-21: 36.6 µg/m³2026-08-22: 36.3 µg/m³2026-08-23: 26.3 µg/m³2026-08-24: 21.3 µg/m³2026-08-25: 21.7 µg/m³2026-08-26: 28.1 µg/m³2026-08-27: 31.3 µg/m³2026-08-28: 36.0 µg/m³2026-08-29: 27.6 µg/m³2026-08-30: 13.7 µg/m³2026-08-31: 19.7 µg/m³2026-09-01: 25.8 µg/m³2026-09-02: 41.3 µg/m³2026-09-03: 28.2 µg/m³2026-09-04: 37.4 µg/m³2026-09-05: 11.5 µg/m³2026-09-06: 8.9 µg/m³2026-09-07: 3.7 µg/m³2026-09-08: 11.2 µg/m³2026-09-09: 49.7 µg/m³2026-09-10: 38.9 µg/m³2026-09-11: 30.9 µg/m³2026-09-12: 37.8 µg/m³2026-09-13: 52.4 µg/m³2026-09-14: 19.6 µg/m³2026-09-15: 16.8 µg/m³2026-09-16: 18.8 µg/m³2026-09-17: 38.3 µg/m³2026-09-18: 7.1 µg/m³2026-09-19: 8.1 µg/m³2026-09-20: 15.2 µg/m³2026-09-21: 27.4 µg/m³2026-09-22: 25.8 µg/m³2026-09-23: 26.6 µg/m³2026-09-24: 22.9 µg/m³2026-09-25: 41.5 µg/m³2026-09-26: 22.2 µg/m³2026-09-27: 21.2 µg/m³2026-09-28: 10.0 µg/m³2026-09-29: 2.8 µg/m³2026-09-30: 3.5 µg/m³2026-10-01: 6.6 µg/m³
38 of 51 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Hour by hour

No hourly readings in the last few days. The chart returns when the monitors' data arrives.

Where it stood each day

Top 10Top 100#1#10#100#1,000#2,835Sep#2,226
Its rank on each day's world board, #1 being the most polluted city that day. The scale is logarithmic: each step down is ten times as many cities.

2026 against 2025, month by month

15JanFebMarAprMayJunJulAug 2026: 24.1 µg/m³AugSep 2026: 23.5 µg/m³SepOctNovDec
Faded bars: 2025. A month shows once it has 10 measured days.

Monitors

StationOperatorType
BosjesspruitPermission requested (South Africa DFFE, SAAQIS, 2026-10-01)South AfricaReference
Club-NAQIPermission requested (South Africa DFFE, SAAQIS, 2026-10-01)South AfricaReference

The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Use this page

SmogRank, PM2.5 daily means, Secunda, South Africa, 12 Aug 2026 – 1 Oct 2026, smogrank.com/za/secunda (accessed 2 Oct 2026).

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Other cities in South Africa

30-day averages, US AQI. All of South Africa.

Updated 2026-10-02 02:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.