SmogRank / Cleaner or dirtier / France

France: cleaner or dirtier, 2026

In France, 95 cities have enough days in both years to compare 2026 so far (1 January to 6 October) with the same days of 2025: 29 got dirtier and 63 cleaner.

The 29 cities that got dirtier, biggest rise first

#	City	2025	2026	Change
1	NiceProvence-Alpes-Côte d'Azur, France	44	54	+2.9 µg/m³+37%
2	MentonProvence-Alpes-Côte d'Azur, France	44	53	+2.5 µg/m³+32%
3	ContesProvence-Alpes-Côte d'Azur, France	44	53	+2.5 µg/m³+32%
4	CannesProvence-Alpes-Côte d'Azur, France	43	52	+1.7 µg/m³+22%
5	BastiaCorsica, France	36	44	+1.6 µg/m³+25%
6	LimogesNew Aquitaine, France	36	43	+1.3 µg/m³+20%
7	LunévilleGrand Est, France	51	53	+0.9 µg/m³+10%
8	BordeauxNew Aquitaine, France	44	49	+0.9 µg/m³+11%
9	Bourg-en-BresseAuvergne-Rhône-Alpes, France	39	44	+0.9 µg/m³+13%
10	FontainebleauÎle-de-France, France	36	41	+0.9 µg/m³+14%
11	ThionvilleGrand Est, France	49	52	+0.9 µg/m³+10%
12	LormontNew Aquitaine, France	43	47	+0.8 µg/m³+10%
13	RoubaixHauts-de-France, France	51	52	+0.5 µg/m³+5%
14	LyonAuvergne-Rhône-Alpes, France	48	51	+0.5 µg/m³+6%
15	MarseilleProvence-Alpes-Côte d'Azur, France	46	48	+0.5 µg/m³+6%
16	AurillacAuvergne-Rhône-Alpes, France	27	30	+0.5 µg/m³+10%
17	PérigueuxNew Aquitaine, France	39	41	+0.4 µg/m³+6%
18	ChambéryAuvergne-Rhône-Alpes, France	38	40	+0.4 µg/m³+6%
19	AuriolProvence-Alpes-Côte d'Azur, France	36	38	+0.4 µg/m³+6%
20	MeylanAuvergne-Rhône-Alpes, France	44	46	+0.3 µg/m³+4%
21	CrollesAuvergne-Rhône-Alpes, France	44	46	+0.3 µg/m³+4%
22	MontargisCentre-Val de Loire, France	42	43	+0.3 µg/m³+4%
23	Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France	40	42	+0.3 µg/m³+4%
24	RevinGrand Est, France	37	39	+0.3 µg/m³+4%
25	AlbertvilleAuvergne-Rhône-Alpes, France	42	43	+0.2 µg/m³+3%
26	AvignonProvence-Alpes-Côte d'Azur, France	47	48	+0.2 µg/m³+2%
27	GrenobleAuvergne-Rhône-Alpes, France	47	48	+0.2 µg/m³+2%
28	Aix-en-ProvenceProvence-Alpes-Côte d'Azur, France	42	43	+0.1 µg/m³+1%
29	MetzGrand Est, France	49	50	+0.1 µg/m³+1%

The 63 cities that got cleaner, biggest fall first

#	City	2025	2026	Change
1	ReimsGrand Est, France	55	48	−2.5 µg/m³−22%
2	CreilHauts-de-France, France	54	48	−2.2 µg/m³−20%
3	AmiensHauts-de-France, France	55	51	−2.0 µg/m³−18%
4	Le HavreNormandy, France	55	51	−1.9 µg/m³−17%
5	DouaiHauts-de-France, France	55	51	−1.7 µg/m³−15%
6	CherbourgNormandy, France	52	44	−1.6 µg/m³−17%
7	RambouilletÎle-de-France, France	51	43	−1.5 µg/m³−16%
8	ÉpinalGrand Est, France	51	43	−1.3 µg/m³−14%
9	ArlesProvence-Alpes-Côte d'Azur, France	52	48	−1.2 µg/m³−12%
10	ÉvreuxNormandy, France	49	43	−1.2 µg/m³−13%
11	Saint-DizierGrand Est, France	46	39	−1.2 µg/m³−15%
12	Saint-QuentinHauts-de-France, France	52	49	−1.1 µg/m³−11%
13	DunkirkHauts-de-France, France	57	55	−1.1 µg/m³−9%
14	La Ferté-MacéNormandy, France	38	33	−1.0 µg/m³−14%
15	AlençonNormandy, France	45	39	−1.0 µg/m³−12%
16	CaenNormandy, France	48	42	−1.0 µg/m³−12%
17	RennesBrittany, France	51	45	−1.0 µg/m³−11%
18	CoulommiersÎle-de-France, France	52	49	−1.0 µg/m³−10%
19	ParisÎle-de-France, France	53	52	−1.0 µg/m³−10%
20	BloisCentre-Val de Loire, France	44	39	−0.9 µg/m³−11%
21	Beaumont-sur-OiseÎle-de-France, France	43	38	−0.9 µg/m³−12%
22	DomontÎle-de-France, France	43	38	−0.9 µg/m³−12%
23	DenainHauts-de-France, France	54	52	−0.9 µg/m³−8%
24	LorientBrittany, France	46	42	−0.8 µg/m³−10%
25	RouenNormandy, France	52	51	−0.8 µg/m³−8%
26	ÉtampesÎle-de-France, France	43	38	−0.8 µg/m³−10%
27	VannesBrittany, France	46	42	−0.7 µg/m³−8%
28	MontbéliardBourgogne-Franche-Comté, France	51	48	−0.7 µg/m³−8%
29	Saint-AvoldGrand Est, France	47	43	−0.7 µg/m³−8%
30	OrléansCentre-Val de Loire, France	50	46	−0.7 µg/m³−8%
31	Boulogne-sur-MerHauts-de-France, France	54	52	−0.7 µg/m³−7%
32	ChâteaurouxCentre-Val de Loire, France	42	39	−0.6 µg/m³−8%
33	L'Isle-d'AbeauAuvergne-Rhône-Alpes, France	45	42	−0.6 µg/m³−7%
34	VillefontaineAuvergne-Rhône-Alpes, France	45	42	−0.6 µg/m³−7%
35	AuxerreBourgogne-Franche-Comté, France	45	42	−0.6 µg/m³−7%
36	BrestBrittany, France	47	44	−0.6 µg/m³−7%
37	DieppeNormandy, France	51	48	−0.6 µg/m³−7%
38	VichyAuvergne-Rhône-Alpes, France	40	37	−0.5 µg/m³−7%
39	ChartresCentre-Val de Loire, France	48	45	−0.5 µg/m³−6%
40	Val-de-ReuilNormandy, France	49	46	−0.5 µg/m³−6%
41	LouviersNormandy, France	49	46	−0.5 µg/m³−6%
42	MarignaneProvence-Alpes-Côte d'Azur, France	51	48	−0.5 µg/m³−5%
43	CalaisHauts-de-France, France	54	53	−0.5 µg/m³−5%
44	NiortNew Aquitaine, France	38	36	−0.4 µg/m³−6%
45	BourgesCentre-Val de Loire, France	42	39	−0.4 µg/m³−5%
46	QuimperBrittany, France	43	41	−0.4 µg/m³−5%
47	ValenceAuvergne-Rhône-Alpes, France	47	44	−0.4 µg/m³−5%
48	Clermont-FerrandAuvergne-Rhône-Alpes, France	38	36	−0.4 µg/m³−6%
49	Saint-ÉtienneAuvergne-Rhône-Alpes, France	43	41	−0.4 µg/m³−5%
50	PoitiersNew Aquitaine, France	46	43	−0.4 µg/m³−5%
51	Joué-lès-ToursCentre-Val de Loire, France	41	39	−0.3 µg/m³−4%
52	DreuxCentre-Val de Loire, France	46	44	−0.3 µg/m³−4%
53	JonageAuvergne-Rhône-Alpes, France	49	47	−0.3 µg/m³−3%
54	MeyzieuAuvergne-Rhône-Alpes, France	49	47	−0.3 µg/m³−3%
55	MoulinsAuvergne-Rhône-Alpes, France	42	40	−0.3 µg/m³−4%
56	AnnemasseAuvergne-Rhône-Alpes, France	49	48	−0.2 µg/m³−2%
57	MontluçonAuvergne-Rhône-Alpes, France	37	36	−0.2 µg/m³−3%
58	ToursCentre-Val de Loire, France	40	39	−0.2 µg/m³−3%
59	Villefranche-sur-SaôneAuvergne-Rhône-Alpes, France	45	44	−0.2 µg/m³−2%
60	Romans-sur-IsèreAuvergne-Rhône-Alpes, France	52	51	−0.2 µg/m³−2%
61	AngoulêmeNew Aquitaine, France	38	37	−0.1 µg/m³−1%
62	ToulouseOccitanie, France	44	44	−0.1 µg/m³−1%
63	ValenciennesHauts-de-France, France	54	54	−0.1 µg/m³−1%

Means in US AQI over the days a city was measured in both years, the same calendar days each year; a city needs 55% of the days paired, and at least 30. The change is in µg/m³ and per cent. How we compare.

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Updated 2026-10-07 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.