What is the air quality trend in Hounslow?

Over the past 8 days, Hounslow had an average AQI of 54 based on station measurements. The worst day was 2026-05-25 with AQI 68.

How is Hounslow air quality measured?

Air quality in Hounslow 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 Hounslow, United Kingdom

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 29 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	40	28–55	9.6 µg/m³	16.5	17h	36
2026-05-28	48	30–111	12.3 µg/m³	21.1	24h	36
2026-05-27	61	39–133	17.2 µg/m³	24.9	24h	39
2026-05-26	58	26–100	16.0 µg/m³	21.1	24h	40
2026-05-25	68	45–106	20.3 µg/m³	26.7	24h	46
2026-05-24	63	33–157	18.5 µg/m³	20.4	24h	38
2026-05-23	51	33–73	12.9 µg/m³	15.3	24h	38
2026-05-22	50	31–77	13.2 µg/m³	12.1	6h	41

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