Cities with the cleanest air quality

Air pollution is one of the most documented environmental health risks of our time. Fine particles (PM2.5), nitrogen dioxide (NO2), and ground-level ozone affect respiratory health, cardiovascular function, and sleep quality - often without visible signs. Choosing where you live, work, or spend extended time matters more than most people realise.

ClearSpot aggregates air quality data from official open government monitoring networks and the Copernicus Atmosphere Monitoring Service (CAMS) into a normalised score for every scored city. The ranking below reflects monthly averages at default sensitivity thresholds. Cities at the top have consistently lower modelled air pressure - not just on one good day.

The 50 cleanest cities for air quality worldwide in May 2026 are listed below, scored from 0% (maximum pressure) to 100% (no documented pressure within default thresholds). Click any city to explore the full environmental breakdown and compare with nearby places.

All countries Global city ranking

Country	City	ClearSpot score	air %	View on map
BE	's-Gravenvoeren	100%	0%	View on map
BE	's-Gravenwezel	100%	0%	View on map
CA	100 Mile House	100%	0%	View on map
CA	108 Mile Ranch	100%	0%	View on map
BE	Aalter	100%	0%	View on map
BE	Aalterbrug	100%	0%	View on map
BE	Aarschot	100%	0%	View on map
BE	Aartselaar	100%	0%	View on map
BR	Abadia de Goiás	100%	0%	View on map
BR	Abadia dos Dourados	100%	0%	View on map
BR	Abadiânia	100%	0%	View on map
BR	Abaeté	100%	0%	View on map
BR	Abaetetuba	100%	0%	View on map
BR	Abaiara	100%	0%	View on map
BR	Abaíra	100%	0%	View on map
CG	Abala	100%	0%	View on map
BO	Abapó Viejo	100%	0%	View on map
BR	Abaré	100%	0%	View on map
BR	Abatiá	100%	0%	View on map
CA	Abbeydale	100%	0%	View on map
CA	Abbotsford	100%	0%	View on map
CA	Abbottsfield	100%	0%	View on map
BR	Abdon Batista	100%	0%	View on map
BR	Abel Figueiredo	100%	0%	View on map
BR	Abelardo Luz	100%	0%	View on map
CA	Aberdeen	100%	0%	View on map
BJ	Abomey	100%	0%	View on map
BJ	Abomey-Calavi	100%	0%	View on map
BR	Abre Campo	100%	0%	View on map
BR	Abreu e Lima	100%	0%	View on map
BR	Abreulândia	100%	0%	View on map
CA	Academy Heights	100%	0%	View on map
CA	Acadia	100%	0%	View on map
BR	Acaiaca	100%	0%	View on map
BR	Açailândia	100%	0%	View on map
BR	Acajutiba	100%	0%	View on map
BR	Acará	100%	0%	View on map
BR	Acarape	100%	0%	View on map
BR	Acaraú	100%	0%	View on map
BR	Acari	100%	0%	View on map
BR	Acauã	100%	0%	View on map
BR	Aceguá	100%	0%	View on map
BO	Achacachi	100%	0%	View on map
BE	Achel	100%	0%	View on map
BO	Achocalla	100%	0%	View on map
BR	Acopiara	100%	0%	View on map
BR	Acores	100%	0%	View on map
BR	Acorizal	100%	0%	View on map
CH	Acquarossa	100%	0%	View on map
BR	Acrelândia	100%	0%	View on map

How is air quality measured on ClearSpot?

ClearSpot sources air quality data primarily from the Open-Meteo Air Quality API and WAQI (World Air Quality Index), both of which aggregate readings from national government monitoring stations. For each city, we compute a monthly average across PM2.5, PM10, NO2, ozone, and carbon monoxide, then normalise against WHO 2021 guidelines to produce a 0-100% pressure score. A score of 100% means no measured pollutant exceeded WHO thresholds during the reference period. A score of 0% means persistent exceedance across multiple pollutants.

Data is refreshed monthly. For a real-time reading at any precise GPS coordinate, use the ClearSpot live map.