What is the air quality trend in Secunda?

Over the past 7 days, Secunda had an average AQI of 76 based on station measurements. The worst day was 2026-05-23 with AQI 84.

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.

151

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 9 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-28	79	33–167	26.4 µg/m³	121.3	24h	6
2026-05-27	83	30–181	31.8 µg/m³	112.7	24h	8
2026-05-26	78	41–158	25.4 µg/m³	121.3	24h	9
2026-05-25	77	35–147	24.4 µg/m³	85.1	24h	10
2026-05-24	65	35–147	19.2 µg/m³	110.5	24h	8
2026-05-23	84	34–168	29.5 µg/m³	137.5	24h	8
2026-05-22	71	23–152	22.7 µg/m³	125.1	23h	9

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