What is the air quality trend in Egham?

Over the past 15 days, Egham had an average AQI of 48 based on station measurements. The worst day was 2026-07-17 with AQI 56.

How is Egham air quality measured?

Air quality in Egham 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 Egham, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 7 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	40	29–59	10.0 µg/m³	8.8	7h	21
2026-07-21	41	23–85	10.2 µg/m³	9.1	24h	30
2026-07-20	41	24–153	10.8 µg/m³	9.7	24h	27
2026-07-19	38	25–65	9.2 µg/m³	9.3	24h	27
2026-07-18	53	28–70	13.6 µg/m³	19.0	24h	26
2026-07-17	56	42–87	14.8 µg/m³	20.9	24h	26
2026-07-16	54	38–86	14.1 µg/m³	17.8	24h	24
2026-07-15	53	36–123	13.7 µg/m³	16.4	24h	23
2026-07-14	49	37–80	12.3 µg/m³	14.4	24h	24
2026-07-13	42	28–76	10.5 µg/m³	12.1	24h	23
2026-07-12	51	27–143	13.9 µg/m³	10.3	24h	22
2026-07-11	53	30–112	14.8 µg/m³	13.2	24h	21
2026-07-10	49	33–66	12.5 µg/m³	16.4	24h	23
2026-07-09	53	36–98	13.8 µg/m³	20.9	24h	24
2026-07-08	48	22–65	12.1 µg/m³	17.9	17h	24

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