What is the air quality trend in Gelligaer?

Over the past 21 days, Gelligaer had an average AQI of 25 based on station measurements. The worst day was 2026-08-26 with AQI 56.

How is Gelligaer air quality measured?

Air quality in Gelligaer 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 Gelligaer, United Kingdom

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

460h

PM2.5 Station

460h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	32	16–88	8.2 µg/m³	23h	3
2026-09-04	17	5–31	4.1 µg/m³	23h	3
2026-09-03	21	10–32	4.9 µg/m³	22h	2
2026-09-02	16	5–30	3.7 µg/m³	24h	3
2026-09-01	24	13–52	5.7 µg/m³	22h	3
2026-08-31	15	6–25	3.5 µg/m³	24h	2
2026-08-30	20	12–42	4.8 µg/m³	24h	3
2026-08-29	17	9–42	4.0 µg/m³	23h	3
2026-08-28	19	9–59	4.6 µg/m³	22h	3
2026-08-27	43	14–112	11.9 µg/m³	24h	3
2026-08-26	56	28–103	15.8 µg/m³	23h	3
2026-08-25	37	25–71	9.2 µg/m³	24h	3
2026-08-24	38	24–60	9.3 µg/m³	24h	3
2026-08-23	34	14–70	8.5 µg/m³	24h	2
2026-08-22	23	12–34	5.6 µg/m³	21h	3
2026-08-21	23	11–53	5.6 µg/m³	23h	3
2026-08-20	16	6–56	3.8 µg/m³	23h	2
2026-08-19	24	10–72	6.2 µg/m³	18h	3
2026-08-18	18	4–28	4.4 µg/m³	24h	3
2026-08-17	29	11–68	7.1 µg/m³	24h	3
2026-08-16	14	14–14	3.3 µg/m³	1h	3

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