What is the air quality trend in St Albans?

Over the past 8 days, St Albans had an average AQI of 54 based on station measurements. The worst day was 2026-05-25 with AQI 68.

How is St Albans air quality measured?

Air quality in St Albans 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 St Albans, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	41	4–58	10.0 µg/m³	16.1	20h	36
2026-05-28	50	32–113	12.8 µg/m³	21.1	24h	35
2026-05-27	61	37–132	17.1 µg/m³	24.9	24h	40
2026-05-26	60	34–107	16.8 µg/m³	21.1	24h	42
2026-05-25	68	46–115	20.4 µg/m³	26.7	24h	49
2026-05-24	56	30–95	15.1 µg/m³	20.4	24h	36
2026-05-23	50	39–67	12.6 µg/m³	15.3	24h	40
2026-05-22	51	39–60	13.0 µg/m³	11.9	4h	45

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