What is the air quality trend in Rayleigh?

Over the past 15 days, Rayleigh had an average AQI of 49 based on station measurements. The worst day was 2026-07-11 with AQI 57.

How is Rayleigh air quality measured?

Air quality in Rayleigh 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 Rayleigh, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

335h

PM2.5 Station

335h · 5 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	44	25–64	11.1 µg/m³	6.6	8h	12
2026-07-21	40	25–81	9.9 µg/m³	7.2	24h	16
2026-07-20	40	23–63	9.8 µg/m³	9.4	24h	16
2026-07-19	41	25–69	10.4 µg/m³	7.7	24h	15
2026-07-18	50	31–67	12.8 µg/m³	16.0	24h	15
2026-07-17	57	39–97	15.3 µg/m³	28.5	24h	13
2026-07-16	53	37–78	13.7 µg/m³	22.1	24h	14
2026-07-15	51	37–63	12.6 µg/m³	19.8	24h	13
2026-07-14	55	29–162	16.3 µg/m³	11.9	24h	12
2026-07-13	48	26–133	12.5 µg/m³	7.9	24h	11
2026-07-12	54	18–159	16.2 µg/m³	5.3	24h	11
2026-07-11	57	22–146	16.4 µg/m³	10.7	24h	11
2026-07-10	48	30–67	12.2 µg/m³	14.9	24h	11
2026-07-09	53	34–125	14.2 µg/m³	17.5	24h	12
2026-07-08	46	30–67	11.6 µg/m³	12.6	15h	13

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