What is the air quality trend in Borehamwood?

Over the past 15 days, Borehamwood had an average AQI of 40 based on station measurements. The worst day was 2026-10-20 with AQI 68.

How is Borehamwood air quality measured?

Air quality in Borehamwood 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 Borehamwood, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 20 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	55	18–123	16.0 µg/m³	6.6	13h	26
2026-10-20	68	37–124	20.4 µg/m³	26.9	24h	28
2026-10-19	42	24–71	10.6 µg/m³	13.3	24h	24
2026-10-18	37	20–64	8.9 µg/m³	8.9	24h	26
2026-10-17	45	23–72	11.4 µg/m³	9.9	24h	31
2026-10-16	30	16–62	7.3 µg/m³	8.4	24h	25
2026-10-15	33	20–54	8.1 µg/m³	8.6	24h	28
2026-10-14	37	25–52	9.0 µg/m³	15.0	24h	22
2026-10-13	38	22–69	9.6 µg/m³	11.4	24h	30
2026-10-12	40	20–68	10.3 µg/m³	6.3	24h	33
2026-10-11	35	14–98	9.0 µg/m³	9.3	24h	24
2026-10-10	44	22–71	11.2 µg/m³	10.9	24h	31
2026-10-09	48	23–85	12.7 µg/m³	9.9	24h	34
2026-10-08	27	19–44	6.4 µg/m³	8.6	24h	26
2026-10-07	27	20–33	6.4 µg/m³	8.1	8h	24

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