What is the air quality trend in Guildford?

Over the past 8 days, Guildford had an average AQI of 54 based on station measurements. The worst day was 2026-05-25 with AQI 65.

How is Guildford air quality measured?

Air quality in Guildford 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 Guildford, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

169h

PM2.5 Station

169h · 2 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	41	12–55	9.9 µg/m³	19.6	21h	34
2026-05-28	51	33–123	13.2 µg/m³	21.9	24h	32
2026-05-27	57	32–123	15.8 µg/m³	20.8	24h	37
2026-05-26	62	32–130	17.5 µg/m³	19.7	24h	40
2026-05-25	65	40–106	19.1 µg/m³	23.7	24h	45
2026-05-24	53	29–71	13.9 µg/m³	18.5	24h	33
2026-05-23	45	32–71	11.2 µg/m³	15.1	24h	36
2026-05-22	64	38–116	18.9 µg/m³	13.2	4h	30

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