What is the air quality trend in Walthamstow?

Over the past 8 days, Walthamstow had an average AQI of 42 based on station measurements. The worst day was 2026-06-04 with AQI 50.

How is Walthamstow air quality measured?

Air quality in Walthamstow 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 Walthamstow, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 21 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-06-09	20	17–23	4.8 µg/m³	9.1	3h	21
2026-06-08	40	20–66	9.8 µg/m³	7.3	24h	38
2026-06-07	45	29–64	11.1 µg/m³	11.0	24h	36
2026-06-06	47	23–88	12.2 µg/m³	7.5	24h	36
2026-06-05	48	28–75	12.5 µg/m³	9.9	24h	34
2026-06-04	50	23–74	13.0 µg/m³	8.3	24h	36
2026-06-03	46	18–81	12.4 µg/m³	8.5	24h	36
2026-06-02	45	4–146	12.1 µg/m³	7.3	21h	40

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