What is the air quality trend in Penarth?

Over the past 15 days, Penarth had an average AQI of 45 based on station measurements. The worst day was 2026-07-17 with AQI 70.

How is Penarth air quality measured?

Air quality in Penarth 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 Penarth, United Kingdom

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

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

108

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

157h

PM2.5 Station

157h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	63	34–120	19.2 µg/m³	6h	1
2026-07-21	39	33–63	10.0 µg/m³	5h	2
2026-07-20	38	16–56	9.3 µg/m³	7h	1
2026-07-19	37	18–59	9.2 µg/m³	6h	1
2026-07-18	55	29–66	15.0 µg/m³	5h	2
2026-07-17	70	70–70	21.1 µg/m³	1h	1
2026-07-16	43	41–46	10.4 µg/m³	4h	1
2026-07-15	42	38–47	10.1 µg/m³	16h	1
2026-07-14	40	33–54	9.8 µg/m³	14h	1
2026-07-13	38	22–99	10.3 µg/m³	17h	1
2026-07-12	28	20–34	6.7 µg/m³	17h	1
2026-07-11	37	22–55	8.9 µg/m³	18h	1
2026-07-10	53	31–63	13.8 µg/m³	17h	1
2026-07-09	47	26–109	12.9 µg/m³	14h	2
2026-07-08	56	38–71	14.7 µg/m³	10h	3

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