What is the air quality trend in Thembisa?

Over the past 8 days, Thembisa had an average AQI of 84 based on station measurements. The worst day was 2026-07-17 with AQI 103.

How is Thembisa air quality measured?

Air quality in Thembisa 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 Thembisa, South Africa

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

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

125

Current AQI
Unhealthy for sensitive groups 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
2026-07-21	77	36–161	25.0 µg/m³	31.0	21h	13
2026-07-20	78	38–152	25.0 µg/m³	34.9	24h	12
2026-07-19	75	35–143	23.7 µg/m³	40.1	24h	15
2026-07-18	92	58–174	32.6 µg/m³	53.9	24h	14
2026-07-17	103	52–153	36.1 µg/m³	78.5	24h	13
2026-07-16	90	52–152	30.0 µg/m³	53.6	24h	14
2026-07-15	74	38–107	23.0 µg/m³	36.5	24h	13
2026-07-14	84	81–86	27.6 µg/m³	47.3	2h	18

Back to Thembisa Air Quality