What is the air quality trend in Leicester?

Over the past 8 days, Leicester had an average AQI of 43 based on station measurements. The worst day was 2026-10-20 with AQI 63.

How is Leicester air quality measured?

Air quality in Leicester 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 Leicester, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

137h

PM2.5 Station

137h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	59	21–184	21.8 µg/m³	14h	4
2026-10-20	63	20–182	20.7 µg/m³	24h	4
2026-10-19	31	2–75	8.1 µg/m³	24h	2
2026-10-18	27	4–80	6.7 µg/m³	21h	3
2026-10-17	41	13–144	11.4 µg/m³	22h	3
2026-10-16	44	10–151	13.4 µg/m³	16h	2
2026-10-15	36	13–98	9.8 µg/m³	14h	1
2026-10-14	44	25–64	12.1 µg/m³	2h	1

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