What is the air quality trend in Perth?

Over the past 14 days, Perth had an average AQI of 74 based on station measurements. The worst day was 2026-05-19 with AQI 86.

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

334h

PM2.5 Station

334h · 5 stations

Temperature GFS model

56pt

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
2026-05-22	68	26–154	21.0 µg/m³	24h	11
2026-05-21	85	21–186	31.7 µg/m³	24h	10
2026-05-20	74	20–154	23.8 µg/m³	24h	10
2026-05-19	86	25–155	28.6 µg/m³	24h	12
2026-05-18	72	25–162	23.2 µg/m³	24h	11
2026-05-17	75	39–169	24.6 µg/m³	24h	12
2026-05-16	64	17–101	19.3 µg/m³	23h	13

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