What is the air quality trend in Carmarthen?

Over the past 8 days, Carmarthen had an average AQI of 50 based on station measurements. The worst day was 2026-07-16 with AQI 70.

How is Carmarthen air quality measured?

Air quality in Carmarthen 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 Carmarthen, United Kingdom

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

169h

PM2.5 Station

169h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	36	16–50	8.6 µg/m³	9h	3
2026-07-21	44	25–86	11.4 µg/m³	24h	5
2026-07-20	35	20–53	8.3 µg/m³	24h	4
2026-07-19	38	19–65	9.6 µg/m³	24h	4
2026-07-18	52	32–104	13.4 µg/m³	24h	4
2026-07-17	63	35–134	18.0 µg/m³	24h	4
2026-07-16	70	31–227	26.0 µg/m³	24h	4
2026-07-15	62	40–128	17.7 µg/m³	16h	4

Back to Carmarthen Air Quality