What is the air quality trend in Purley?

Over the past 15 days, Purley had an average AQI of 40 based on station measurements. The worst day was 2026-10-20 with AQI 66.

How is Purley air quality measured?

Air quality in Purley 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 Purley, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 21 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	56	18–127	16.2 µg/m³	7.4	13h	26
2026-10-20	66	35–130	19.9 µg/m³	24.1	24h	26
2026-10-19	42	24–72	10.6 µg/m³	13.1	24h	22
2026-10-18	37	21–64	9.0 µg/m³	8.8	24h	26
2026-10-17	45	22–71	11.6 µg/m³	9.5	24h	31
2026-10-16	30	17–64	7.4 µg/m³	8.4	24h	25
2026-10-15	34	20–54	8.1 µg/m³	9.2	24h	28
2026-10-14	38	25–54	9.2 µg/m³	16.2	24h	22
2026-10-13	38	22–67	9.4 µg/m³	11.5	24h	30
2026-10-12	41	20–67	10.6 µg/m³	6.6	24h	32
2026-10-11	35	14–102	8.9 µg/m³	8.9	24h	24
2026-10-10	43	22–70	11.1 µg/m³	10.5	24h	31
2026-10-09	48	23–85	12.8 µg/m³	9.9	24h	34
2026-10-08	27	19–45	6.4 µg/m³	8.2	24h	26
2026-10-07	27	22–33	6.5 µg/m³	8.6	8h	25

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