What is the air quality trend in Acton?

Over the past 15 days, Acton had an average AQI of 41 based on station measurements. The worst day was 2026-10-20 with AQI 63.

How is Acton air quality measured?

Air quality in Acton 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 Acton, United Kingdom

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

Historical PM2.5 and AQI trend from monitoring stations near Acton, 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 · 39 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	51	23–83	14.0 µg/m³	6.9	15h	35
2026-10-20	63	32–127	18.1 µg/m³	26.9	24h	36
2026-10-19	41	23–69	10.1 µg/m³	13.3	24h	25
2026-10-18	40	19–75	10.0 µg/m³	8.9	24h	26
2026-10-17	44	22–77	11.4 µg/m³	9.9	24h	38
2026-10-16	35	17–61	8.7 µg/m³	8.4	24h	28
2026-10-15	34	23–56	8.1 µg/m³	8.6	24h	30
2026-10-14	42	23–62	10.3 µg/m³	15.0	24h	27
2026-10-13	39	24–67	9.9 µg/m³	11.4	24h	35
2026-10-12	43	20–75	11.5 µg/m³	6.3	24h	40
2026-10-11	46	16–130	12.5 µg/m³	9.3	24h	30
2026-10-10	41	24–66	10.2 µg/m³	10.9	24h	36
2026-10-09	48	29–80	12.7 µg/m³	9.9	24h	41
2026-10-08	31	19–56	7.5 µg/m³	8.6	24h	33
2026-10-07	30	23–35	7.1 µg/m³	8.2	6h	33

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