What is the air quality trend in Perth?

Over the past 7 days, Perth had an average AQI of 73 based on station measurements. The worst day was 2026-05-24 with AQI 84.

How is Perth air quality measured?

Air quality in Perth 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 Perth, United Kingdom

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

Historical PM2.5 and AQI trend from monitoring stations near Perth, United Kingdom.

Current AQI
Good 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
2026-05-29	56	21–163	16.9 µg/m³	23h	8
2026-05-28	63	31–196	21.1 µg/m³	24h	9
2026-05-27	74	46–135	22.7 µg/m³	24h	10
2026-05-26	81	54–161	26.3 µg/m³	24h	11
2026-05-25	78	26–149	25.3 µg/m³	24h	12
2026-05-24	84	38–193	30.4 µg/m³	24h	10
2026-05-23	78	33–159	25.2 µg/m³	24h	10

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