What is the air quality trend in Guildford?

Over the past 14 days, Guildford had an average AQI of 37 based on station measurements. The worst day was 2026-08-03 with AQI 50.

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 CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 25 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-07	38	18–61	9.1 µg/m³	7.2	24h	26
2026-08-06	32	23–63	7.8 µg/m³	6.4	24h	32
2026-08-05	39	29–71	9.6 µg/m³	9.4	24h	36
2026-08-04	43	28–83	10.9 µg/m³	11.9	24h	30
2026-08-03	50	25–152	13.8 µg/m³	14.0	24h	27
2026-08-02	40	22–58	9.8 µg/m³	9.4	24h	26
2026-08-01	35	23–53	8.5 µg/m³	8.8	24h	26
2026-07-31	34	22–48	8.1 µg/m³	8.3	24h	26
2026-07-30	38	20–154	10.3 µg/m³	7.4	24h	26
2026-07-29	43	26–90	11.0 µg/m³	11.9	24h	29
2026-07-28	34	25–52	8.0 µg/m³	9.9	24h	27
2026-07-27	37	18–155	10.1 µg/m³	7.0	24h	25
2026-07-26	32	19–55	7.8 µg/m³	5.4	24h	26
2026-07-25	36	28–51	8.6 µg/m³	13.5	21h	26

Back to Guildford Air Quality