What is the air quality trend in Longfield?

Over the past 15 days, Longfield had an average AQI of 41 based on station measurements. The worst day was 2026-05-26 with AQI 51.

How is Longfield air quality measured?

Air quality in Longfield 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 Longfield, United Kingdom

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

Historical PM2.5 and AQI trend from monitoring stations near Longfield, 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 · 21 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-06-09	19	17–20	4.4 µg/m³	9.1	3h	21
2026-06-08	40	22–68	9.9 µg/m³	8.6	24h	36
2026-06-07	46	30–64	11.4 µg/m³	15.0	24h	35
2026-06-06	47	22–88	12.2 µg/m³	8.7	24h	35
2026-06-05	48	29–75	12.5 µg/m³	12.2	24h	33
2026-06-04	49	21–74	12.8 µg/m³	9.1	24h	35
2026-06-03	47	18–83	12.7 µg/m³	10.4	24h	35
2026-06-02	44	14–151	11.7 µg/m³	8.3	24h	40
2026-06-01	34	18–68	8.4 µg/m³	10.2	24h	36
2026-05-31	29	16–56	7.1 µg/m³	9.2	24h	30
2026-05-30	36	25–52	8.5 µg/m³	17.3	24h	29
2026-05-29	39	24–67	9.6 µg/m³	21.9	24h	32
2026-05-28	43	32–62	10.5 µg/m³	29.8	24h	29
2026-05-27	50	32–80	13.1 µg/m³	31.2	24h	30
2026-05-26	51	34–125	13.4 µg/m³	30.3	20h	34

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