What is the air quality trend in Greenwich?

Over the past 3 days, Greenwich had an average AQI of 24 based on station measurements. The worst day was with AQI .

How is Greenwich air quality measured?

Air quality in Greenwich 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 Greenwich, United Kingdom

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

40h · 2 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-10	14	4–18	3.2 µg/m³	20h	18
2026-04-09	21	9–57	5.3 µg/m³	19h	16
2026-04-08	37	37–37	8.9 µg/m³	1h	1

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