What is the air quality trend in Johnstone?

Over the past 8 days, Johnstone had an average AQI of 80 based on station measurements. The worst day was 2026-06-09 with AQI 165.

How is Johnstone air quality measured?

Air quality in Johnstone 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 Johnstone, United Kingdom

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 10 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	165	165–165	82.6 µg/m³	1h	10
2026-06-08	59	23–101	16.9 µg/m³	24h	15
2026-06-07	70	25–159	21.9 µg/m³	24h	15
2026-06-06	70	23–155	21.3 µg/m³	24h	14
2026-06-05	71	18–152	21.9 µg/m³	24h	14
2026-06-04	68	27–198	24.5 µg/m³	24h	12
2026-06-03	73	23–166	24.1 µg/m³	24h	15
2026-06-02	64	22–115	18.9 µg/m³	21h	15

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