What is the air quality trend in Perth?

Over the past 7 days, Perth had an average AQI of 49 based on station measurements. The worst day was 2026-08-04 with AQI 60.

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

163h

PM2.5 Station

163h · 17 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-07	52	23–162	14.4 µg/m³	22h	12
2026-08-06	43	22–142	11.5 µg/m³	24h	21
2026-08-05	41	23–67	10.1 µg/m³	24h	20
2026-08-04	60	30–155	17.5 µg/m³	24h	19
2026-08-03	57	25–168	17.1 µg/m³	24h	14
2026-08-02	45	25–92	11.7 µg/m³	24h	14
2026-08-01	48	21–108	12.6 µg/m³	21h	11

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