What is the air quality trend in Llanelli?

Over the past 21 days, Llanelli had an average AQI of 58 based on station measurements. The worst day was 2026-05-20 with AQI 96.

How is Llanelli air quality measured?

Air quality in Llanelli 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 Llanelli, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

470h

PM2.5 Station

470h · 4 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	41	22–93	10.7 µg/m³	18h	4
2026-05-28	54	27–104	14.8 µg/m³	24h	4
2026-05-27	54	28–89	14.6 µg/m³	23h	4
2026-05-26	55	6–78	15.4 µg/m³	24h	4
2026-05-25	72	25–188	26.5 µg/m³	21h	7
2026-05-24	43	13–104	11.8 µg/m³	22h	4
2026-05-23	53	14–140	15.3 µg/m³	23h	4
2026-05-22	65	32–221	26.1 µg/m³	24h	5
2026-05-21	52	19–161	16.6 µg/m³	24h	5
2026-05-20	96	23–461	55.1 µg/m³	24h	5
2026-05-19	88	32–187	34.0 µg/m³	24h	7
2026-05-18	64	7–167	21.6 µg/m³	24h	6
2026-05-17	78	54–126	24.7 µg/m³	23h	9
2026-05-16	57	8–118	17.4 µg/m³	23h	8
2026-05-15	47	15–131	12.9 µg/m³	24h	8
2026-05-14	57	22–175	17.5 µg/m³	24h	8
2026-05-13	48	22–84	13.0 µg/m³	24h	7
2026-05-12	49	15–73	13.0 µg/m³	24h	8
2026-05-11	46	22–167	13.6 µg/m³	24h	8
2026-05-10	63	20–280	23.6 µg/m³	24h	8
2026-05-09	51	29–65	13.7 µg/m³	5h	10

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