What is the air quality trend in Besançon?

Over the past 15 days, Besançon had an average AQI of 40 based on station measurements. The worst day was 2026-08-26 with AQI 59.

How is Besançon air quality measured?

Air quality in Besançon 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 Besançon, France

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

252h

PM2.5 Station

252h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	30	14–54	7.3 µg/m³	14h	2
2026-09-04	40	9–71	10.5 µg/m³	17h	2
2026-09-03	37	15–125	9.7 µg/m³	21h	2
2026-09-02	29	1–60	7.2 µg/m³	18h	2
2026-09-01	41	13–71	10.6 µg/m³	16h	2
2026-08-31	34	10–63	8.4 µg/m³	17h	2
2026-08-30	40	22–55	9.7 µg/m³	16h	2
2026-08-29	37	6–83	9.7 µg/m³	19h	2
2026-08-28	37	7–119	9.9 µg/m³	18h	2
2026-08-27	51	20–75	13.5 µg/m³	19h	2
2026-08-26	59	21–153	16.8 µg/m³	20h	2
2026-08-25	47	21–71	12.3 µg/m³	19h	2
2026-08-24	44	15–63	10.9 µg/m³	16h	2
2026-08-23	40	15–74	10.3 µg/m³	19h	2
2026-08-22	45	32–68	12.2 µg/m³	3h	2

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