What is the air quality trend in Croydon?

Over the past 15 days, Croydon had an average AQI of 48 based on station measurements. The worst day was 2026-07-11 with AQI 57.

How is Croydon air quality measured?

Air quality in Croydon 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 Croydon, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 7 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	45	32–56	11.0 µg/m³	15.8	8h	21
2026-07-21	41	27–57	9.9 µg/m³	11.5	24h	32
2026-07-20	37	27–55	9.0 µg/m³	11.9	24h	30
2026-07-19	42	27–121	11.0 µg/m³	9.4	24h	29
2026-07-18	52	35–81	13.3 µg/m³	17.5	24h	27
2026-07-17	56	42–86	14.8 µg/m³	22.5	24h	26
2026-07-16	53	38–87	13.7 µg/m³	19.3	24h	25
2026-07-15	50	38–71	12.5 µg/m³	18.0	24h	24
2026-07-14	51	35–106	13.2 µg/m³	16.6	24h	25
2026-07-13	43	30–81	10.9 µg/m³	14.7	24h	24
2026-07-12	49	28–119	13.2 µg/m³	11.0	24h	24
2026-07-11	57	35–110	16.4 µg/m³	13.0	24h	23
2026-07-10	47	32–69	11.8 µg/m³	18.3	24h	23
2026-07-09	52	34–95	13.4 µg/m³	22.1	24h	24
2026-07-08	49	27–66	12.4 µg/m³	19.7	16h	25

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