What is the air quality trend in Gujan-Mestras?

Over the past 21 days, Gujan-Mestras had an average AQI of 36 based on station measurements. The worst day was 2026-05-27 with AQI 62.

How is Gujan-Mestras air quality measured?

Air quality in Gujan-Mestras 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 Gujan-Mestras, France

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

Historical PM2.5 and AQI trend from monitoring stations near Gujan-Mestras, France.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

441h

PM2.5 Station

441h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	29	17–41	7.0 µg/m³	8h	3
2026-05-29	38	16–91	9.5 µg/m³	23h	3
2026-05-28	46	24–190	15.0 µg/m³	21h	2
2026-05-27	62	23–428	28.9 µg/m³	23h	2
2026-05-26	40	13–61	9.9 µg/m³	22h	2
2026-05-25	46	13–103	12.9 µg/m³	18h	3
2026-05-24	42	9–88	10.8 µg/m³	21h	2
2026-05-23	45	13–160	12.5 µg/m³	21h	2
2026-05-22	34	8–79	8.6 µg/m³	23h	2
2026-05-21	33	6–54	7.9 µg/m³	21h	2
2026-05-20	42	15–173	12.8 µg/m³	21h	2
2026-05-19	28	9–69	7.0 µg/m³	24h	2
2026-05-18	33	4–134	8.8 µg/m³	23h	3
2026-05-17	37	12–249	15.9 µg/m³	20h	3
2026-05-16	31	15–62	7.6 µg/m³	20h	3
2026-05-15	30	15–62	7.2 µg/m³	21h	3
2026-05-14	29	8–53	6.9 µg/m³	24h	2
2026-05-13	29	7–60	6.9 µg/m³	23h	2
2026-05-12	29	15–44	7.1 µg/m³	24h	3
2026-05-11	31	5–66	7.9 µg/m³	24h	3
2026-05-10	34	11–54	8.3 µg/m³	16h	3

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