What is the air quality trend in Southend-on-Sea?

Over the past 15 days, Southend-on-Sea had an average AQI of 51 based on station measurements. The worst day was 2026-07-17 with AQI 63.

How is Southend-on-Sea air quality measured?

Air quality in Southend-on-Sea 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 Southend-on-Sea, United Kingdom

Name: Southend-on-Sea Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Southend-on-Sea, 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 · 10 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	23–64	10.2 µg/m³	3.5	5h	10
2026-07-21	38	26–58	9.2 µg/m³	5.6	24h	15
2026-07-20	38	23–85	9.6 µg/m³	7.2	24h	13
2026-07-19	41	27–61	10.1 µg/m³	5.6	24h	12
2026-07-18	51	34–75	13.3 µg/m³	14.5	24h	13
2026-07-17	63	41–98	18.2 µg/m³	30.7	24h	12
2026-07-16	61	40–103	17.2 µg/m³	22.1	24h	13
2026-07-15	59	38–160	16.9 µg/m³	19.3	24h	11
2026-07-14	54	32–86	14.4 µg/m³	9.2	24h	11
2026-07-13	49	26–67	12.7 µg/m³	6.0	24h	10
2026-07-12	60	23–162	18.7 µg/m³	4.4	24h	10
2026-07-11	58	29–109	16.4 µg/m³	6.9	24h	10
2026-07-10	60	27–132	17.1 µg/m³	11.2	24h	10
2026-07-09	50	27–67	12.7 µg/m³	14.5	24h	10
2026-07-08	46	18–76	11.8 µg/m³	7.5	19h	9

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