What is the air quality trend in Walton-on-Thames?

Over the past 15 days, Walton-on-Thames had an average AQI of 55 based on station measurements. The worst day was 2026-05-17 with AQI 69.

How is Walton-on-Thames air quality measured?

Air quality in Walton-on-Thames 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 Walton-on-Thames, United Kingdom

Name: Walton-on-Thames Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Walton-on-Thames, 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 · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	41	18–54	9.8 µg/m³	15.6	21h	36
2026-05-28	51	35–117	13.2 µg/m³	21.2	24h	35
2026-05-27	58	36–115	16.0 µg/m³	23.4	24h	39
2026-05-26	62	32–124	17.5 µg/m³	20.8	24h	42
2026-05-25	65	41–102	19.1 µg/m³	25.1	24h	48
2026-05-24	55	30–90	14.7 µg/m³	18.1	24h	35
2026-05-23	46	34–70	11.5 µg/m³	14.5	24h	39
2026-05-22	51	29–71	13.0 µg/m³	10.9	24h	43
2026-05-21	63	26–151	19.1 µg/m³	4.7	24h	37
2026-05-20	63	31–110	18.7 µg/m³	6.4	24h	39
2026-05-19	62	24–121	18.2 µg/m³	8.9	24h	48
2026-05-18	52	20–88	14.7 µg/m³	6.3	24h	45
2026-05-17	69	28–122	20.9 µg/m³	6.9	24h	56
2026-05-16	51	18–92	13.9 µg/m³	6.4	24h	53
2026-05-15	45	35–53	10.9 µg/m³	8.4	3h	49

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