What is the air quality trend in Firminy?

Over the past 15 days, Firminy had an average AQI of 39 based on station measurements. The worst day was 2026-05-26 with AQI 59.

How is Firminy air quality measured?

Air quality in Firminy 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 Firminy, France

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

Historical PM2.5 and AQI trend from monitoring stations near Firminy, France.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	37	14–72	9.2 µg/m³	17.0	23h	4
2026-05-28	46	31–64	11.4 µg/m³	20.4	24h	5
2026-05-27	51	30–113	13.1 µg/m³	26.8	24h	5
2026-05-26	59	40–105	16.1 µg/m³	26.7	24h	5
2026-05-25	55	31–152	15.5 µg/m³	13.6	24h	5
2026-05-24	44	21–170	13.4 µg/m³	8.2	24h	4
2026-05-23	34	11–66	8.4 µg/m³	5.8	24h	5
2026-05-22	32	18–77	8.2 µg/m³	10.9	24h	5
2026-05-21	31	13–134	8.1 µg/m³	10.4	24h	5
2026-05-20	33	14–190	11.6 µg/m³	6.7	24h	5
2026-05-19	42	13–111	12.1 µg/m³	6.6	24h	6
2026-05-18	38	11–151	10.9 µg/m³	5.3	24h	6
2026-05-17	49	10–117	13.8 µg/m³	3.9	24h	6
2026-05-16	38	10–159	11.1 µg/m³	2.9	24h	6
2026-05-15	4	4–4	1.0 µg/m³	1.1	1h	2

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