SmogRank / Cleaner or dirtier / The Netherlands

The Netherlands: cleaner or dirtier, 2026

In The Netherlands, 33 cities have enough days in both years to compare 2026 so far (1 January to 6 October) with the same days of 2025: 6 got dirtier and 27 cleaner.

The 6 cities that got dirtier, biggest rise first

#	City	2025	2026	Change
1	GroningenThe Netherlands	43	51	+1.6 µg/m³+21%
2	UtrechtThe Netherlands	47	50	+0.6 µg/m³+7%
3	LopikUtrecht, The Netherlands	51	52	+0.5 µg/m³+5%
4	IJsselsteinUtrecht, The Netherlands	51	52	+0.4 µg/m³+4%
5	WaalreNorth Brabant, The Netherlands	52	52	+0.3 µg/m³+3%
6	EindhovenNorth Brabant, The Netherlands	52	52	+0.3 µg/m³+3%

The 27 cities that got cleaner, biggest fall first

#	City	2025	2026	Change
1	VenrayLimburg, The Netherlands	54	47	−2.0 µg/m³−19%
2	SchiedamSouth Holland, The Netherlands	58	55	−2.0 µg/m³−15%
3	Velsen-ZuidNorth Holland, The Netherlands	52	44	−1.7 µg/m³−18%
4	The HagueSouth Holland, The Netherlands	55	52	−1.3 µg/m³−12%
5	ZwanenburgNorth Holland, The Netherlands	48	41	−1.3 µg/m³−15%
6	VelserbroekNorth Holland, The Netherlands	48	41	−1.3 µg/m³−15%
7	TilburgNorth Brabant, The Netherlands	54	52	−1.1 µg/m³−10%
8	AmsterdamNorth Holland, The Netherlands	48	42	−1.1 µg/m³−13%
9	BredaNorth Brabant, The Netherlands	53	49	−1.1 µg/m³−11%
10	VenloLimburg, The Netherlands	54	52	−1.1 µg/m³−10%
11	HeerlenLimburg, The Netherlands	42	38	−0.8 µg/m³−11%
12	BreukelenUtrecht, The Netherlands	52	51	−0.7 µg/m³−7%
13	MaarssenUtrecht, The Netherlands	52	51	−0.7 µg/m³−7%
14	RidderkerkSouth Holland, The Netherlands	50	46	−0.7 µg/m³−8%
15	's-GravenzandeSouth Holland, The Netherlands	51	48	−0.6 µg/m³−6%
16	RotterdamSouth Holland, The Netherlands	53	52	−0.6 µg/m³−6%
17	SpijkenisseSouth Holland, The Netherlands	48	45	−0.6 µg/m³−7%
18	HillegomSouth Holland, The Netherlands	52	51	−0.6 µg/m³−6%
19	NoordwijkerhoutSouth Holland, The Netherlands	52	51	−0.6 µg/m³−6%
20	KollumFriesland, The Netherlands	46	43	−0.5 µg/m³−6%
21	NijmegenGelderland, The Netherlands	48	46	−0.5 µg/m³−6%
22	ZaanstadNorth Holland, The Netherlands	43	41	−0.4 µg/m³−5%
23	MaassluisSouth Holland, The Netherlands	45	43	−0.4 µg/m³−5%
24	EnschedeOverijssel, The Netherlands	49	48	−0.2 µg/m³−2%
25	BarneveldGelderland, The Netherlands	52	52	−0.2 µg/m³−2%
26	LunterenGelderland, The Netherlands	52	52	−0.2 µg/m³−2%
27	MedemblikNorth Holland, The Netherlands	53	52	−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.