What is the air quality trend in Secunda?

Over the past 8 days, Secunda had an average AQI of 76 based on station measurements. The worst day was 2026-05-23 with AQI 96.

How is Secunda air quality measured?

Air quality in Secunda is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Secunda, South Africa

Name: Secunda Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Secunda, South Africa.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	77	38–153	24.2 µg/m³	22h	7
2026-05-27	84	34–182	30.1 µg/m³	24h	8
2026-05-26	79	37–152	25.3 µg/m³	24h	10
2026-05-25	75	33–131	23.6 µg/m³	24h	11
2026-05-24	65	30–144	19.5 µg/m³	24h	10
2026-05-23	96	37–247	38.9 µg/m³	24h	10
2026-05-22	72	22–155	22.8 µg/m³	24h	10
2026-05-21	65	65–65	18.6 µg/m³	1h	5

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