What is the air quality trend in Stilfontein?

Over the past 14 days, Stilfontein had an average AQI of 36 based on station measurements. The worst day was 2026-05-21 with AQI 58.

How is Stilfontein air quality measured?

Air quality in Stilfontein 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 Stilfontein, South Africa

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-28	44	16–67	11.3 µg/m³	10h	1
2026-05-27	33	7–88	9.0 µg/m³	14h	1
2026-05-26	58	13–157	17.9 µg/m³	13h	1
2026-05-25	30	5–55	7.2 µg/m³	13h	1
2026-05-24	34	1–86	9.2 µg/m³	13h	1
2026-05-23	41	15–66	10.2 µg/m³	11h	1
2026-05-22	33	1–80	8.6 µg/m³	14h	1
2026-05-21	58	10–328	29.0 µg/m³	14h	1
2026-05-20	42	9–68	10.4 µg/m³	16h	1
2026-05-19	26	12–42	6.3 µg/m³	10h	1
2026-05-18	25	10–35	6.1 µg/m³	14h	1
2026-05-17	17	1–50	4.1 µg/m³	8h	1
2026-05-16	31	10–47	7.5 µg/m³	7h	1
2026-05-15	44	5–129	13.2 µg/m³	9h	1

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