What is the air quality trend in Thembisa?

Over the past 8 days, Thembisa had an average AQI of 74 based on station measurements. The worst day was 2026-07-17 with AQI 95.

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.

171

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	32	32–32	7.6 µg/m³	23.9	1h	2
2026-07-21	80	45–142	25.3 µg/m³	36.7	24h	14
2026-07-20	73	34–125	22.7 µg/m³	34.9	24h	14
2026-07-19	76	40–152	23.9 µg/m³	40.1	24h	16
2026-07-18	86	55–130	28.4 µg/m³	53.9	24h	15
2026-07-17	95	52–149	32.4 µg/m³	78.5	24h	15
2026-07-16	86	53–127	28.4 µg/m³	53.6	24h	14
2026-07-15	70	48–102	21.5 µg/m³	35.9	23h	14

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