What is the air quality trend in Greenwich?

Over the past 15 days, Greenwich had an average AQI of 59 based on station measurements. The worst day was 2026-05-25 with AQI 78.

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 Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

337h

PM2.5 Station

337h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	34	5–45	8.1 µg/m³	7.9	10h	39
2026-05-29	48	28–98	12.3 µg/m³	15.8	24h	41
2026-05-28	52	34–70	13.4 µg/m³	21.1	24h	40
2026-05-27	62	44–97	17.5 µg/m³	24.9	24h	44
2026-05-26	64	41–102	18.4 µg/m³	21.1	24h	47
2026-05-25	78	49–153	24.7 µg/m³	26.7	24h	50
2026-05-24	69	35–152	20.5 µg/m³	20.4	24h	42
2026-05-23	56	36–81	15.0 µg/m³	15.3	24h	45
2026-05-22	58	39–81	15.7 µg/m³	11.6	24h	47
2026-05-21	65	28–131	19.4 µg/m³	4.4	24h	43
2026-05-20	75	35–153	23.4 µg/m³	6.5	24h	42
2026-05-19	63	37–88	18.2 µg/m³	9.1	24h	52
2026-05-18	56	23–77	15.2 µg/m³	7.4	24h	51
2026-05-17	60	25–103	17.1 µg/m³	6.3	24h	56
2026-05-16	57	20–112	16.5 µg/m³	8.2	15h	46

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