St. Moritz, Switzerland
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Clean air, compared.

100 cities ranked on the air a resident breathes: Bora Bora, San Juan and Quinta do Lago lead. Pick any 2 and see them side by side.

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By the Patrician.ch research desk · Updated 4 November 2026 · 10 min read
Head to head

Any 2, side by side.

vs
#CityCountryClean air
99Dubai🇦🇪 UAE35.8 µg/m³
59Zurich🇨🇭 Switzerland8.6 µg/m³
The ranking

All 100, ranked.

#CityCountryClean air
1Bora Bora🇵🇫 French Polynesia1.5 µg/m³
2San Juan🇵🇷 Puerto Rico2.3 µg/m³
3Quinta do Lago🇵🇹 Portugal2.7 µg/m³
3Platinum Coast🇧🇧 Barbados2.7 µg/m³
5Queenstown🇳🇿 New Zealand2.9 µg/m³
6Panama City🇵🇦 Panama3.3 µg/m³
7Montecito🇺🇸 United States3.7 µg/m³
8Tucker's Town🇧🇲 Bermuda3.8 µg/m³
9Sydney🇦🇺 Australia3.9 µg/m³
10Maui🇺🇸 United States4.0 µg/m³
11Palm Beach🇺🇸 United States4.3 µg/m³
12Aspen🇺🇸 United States4.4 µg/m³
13San Francisco🇺🇸 United States4.6 µg/m³
14Bal Harbour🇺🇸 United States4.9 µg/m³
14Coral Gables🇺🇸 United States4.9 µg/m³
14Miami🇺🇸 United States4.9 µg/m³
17Andorra la Vella🇦🇩 Andorra5.2 µg/m³
18Naples🇺🇸 United States5.3 µg/m³
19Las Vegas🇺🇸 United States5.6 µg/m³
20Zermatt🇨🇭 Switzerland5.7 µg/m³
20The Hamptons🇺🇸 United States5.7 µg/m³
22Mykonos🇬🇷 Greece5.8 µg/m³
23Cascais🇵🇹 Portugal6.0 µg/m³
24Kitzbühel🇦🇹 Austria6.2 µg/m³
25St. Moritz🇨🇭 Switzerland6.8 µg/m³
25Newport Beach🇺🇸 United States6.8 µg/m³
25Porto Cervo🇮🇹 Italy6.8 µg/m³
25Los Cabos🇲🇽 Mexico6.8 µg/m³
29Austin🇺🇸 United States6.9 µg/m³
30Malibu🇺🇸 United States7.2 µg/m³
30Gibraltar🇬🇮 Gibraltar7.2 µg/m³
32George Town🇰🇾 Cayman Islands7.4 µg/m³
33Montreux🇨🇭 Switzerland7.5 µg/m³
33Luxembourg🇱🇺 Luxembourg7.5 µg/m³
35Gstaad🇨🇭 Switzerland7.6 µg/m³
36Lugano🇨🇭 Switzerland7.8 µg/m³
36Verbier🇨🇭 Switzerland7.8 µg/m³
36Vaduz🇱🇮 Liechtenstein7.8 µg/m³
36Dallas🇺🇸 United States7.8 µg/m³
36Buenos Aires🇦🇷 Argentina7.8 µg/m³
41New York🇺🇸 United States7.9 µg/m³
41Marbella🇪🇸 Spain7.9 µg/m³
43Anguilla🇦🇮 Anguilla8.0 µg/m³
44Lisbon🇵🇹 Portugal8.1 µg/m³
45Portofino🇮🇹 Italy8.2 µg/m³
46Munich🇩🇪 Germany8.3 µg/m³
47Jersey🇯🇪 Jersey8.4 µg/m³
47Gustavia🇫🇷 St Barths8.4 µg/m³
47Providenciales🇹🇨 Turks and Caicos8.4 µg/m³
47Virgin Gorda🇻🇬 British Virgin Islands8.4 µg/m³
47Nassau🇧🇸 Bahamas8.4 µg/m³
47Christophe Harbour🇰🇳 St Kitts and Nevis8.4 µg/m³
47St John's🇦🇬 Antigua and Barbuda8.4 µg/m³
47Casa de Campo🇩🇴 Dominican Republic8.4 µg/m³
55Monaco🇲🇨 Monaco8.4 µg/m³
56Madrid🇪🇸 Spain8.5 µg/m³
56Provence🇫🇷 France8.5 µg/m³
56Tuscany🇮🇹 Italy8.5 µg/m³
59Zurich🇨🇭 Switzerland8.6 µg/m³
60Geneva🇨🇭 Switzerland8.7 µg/m³
60Lucerne🇨🇭 Switzerland8.7 µg/m³
62Megève🇫🇷 France8.9 µg/m³
62Nice🇫🇷 France8.9 µg/m³
64Barcelona🇪🇸 Spain9.2 µg/m³
65Palma🇪🇸 Spain9.3 µg/m³
66Cancún🇲🇽 Mexico9.5 µg/m³
66Tulum🇲🇽 Mexico9.5 µg/m³
68Vienna🇦🇹 Austria9.6 µg/m³
68Saint-Tropez🇫🇷 France9.6 µg/m³
70London🇬🇧 United Kingdom9.9 µg/m³
71Zug🇨🇭 Switzerland10.0 µg/m³
72Courchevel🇫🇷 France10.1 µg/m³
73Tokyo🇯🇵 Japan10.2 µg/m³
74Paris🇫🇷 France10.3 µg/m³
75Hvar🇭🇷 Croatia10.4 µg/m³
76Limassol🇨🇾 Cyprus10.5 µg/m³
77Phuket🇹🇭 Thailand10.9 µg/m³
78Valletta🇲🇹 Malta11.0 µg/m³
79Rome🇮🇹 Italy11.2 µg/m³
79Tivat🇲🇪 Montenegro11.2 µg/m³
81Beverly Hills🇺🇸 United States11.3 µg/m³
81Amalfi Coast🇮🇹 Italy11.3 µg/m³
81Capri🇮🇹 Italy11.3 µg/m³
84Punta del Este🇺🇾 Uruguay11.5 µg/m³
85Cortina d'Ampezzo🇮🇹 Italy11.8 µg/m³
86Singapore🇸🇬 Singapore11.9 µg/m³
86Ibiza🇪🇸 Spain11.9 µg/m³
88Prague🇨🇿 Czech Republic12.1 µg/m³
89Lake Como🇮🇹 Italy14.1 µg/m³
90Forte dei Marmi🇮🇹 Italy14.6 µg/m³
91Athens🇬🇷 Greece14.7 µg/m³
92Hong Kong🇭🇰 Hong Kong SAR15.7 µg/m³
93Cannes🇫🇷 France16.1 µg/m³
94Venice🇮🇹 Italy16.3 µg/m³
95Milan🇮🇹 Italy17.0 µg/m³
96Bangkok🇹🇭 Thailand17.6 µg/m³
97Tel Aviv🇮🇱 Israel17.9 µg/m³
98Bali🇮🇩 Indonesia22.2 µg/m³
99Dubai🇦🇪 UAE35.8 µg/m³
99Abu Dhabi🇦🇪 UAE38.6 µg/m³

Clean air: IQAir, World Air Quality Report, 2025 data, at the place or the nearest city IQAir reports, in the same country where there is one. A place with no reporting city near it takes the median of the board. Checked 3 October 2026. The full method: how the list is ranked.

Most compared

The pairings people actually make.

All head to heads

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Questions

Which city ranks first on clean air?

Bora Bora, then San Juan and Quinta do Lago, of the 100 cities on the Patrician.ch 100.

Abu Dhabi ranks last of the 100. Clean air: 1.5 µg/m³, in Bora Bora.

How is clean air measured?

The fine particles in the air a resident breathes: the annual mean of PM2.5, in micrograms per cubic meter. Lower scores higher.

Clean air: IQAir, World Air Quality Report, 2025 data, at the place or the nearest city IQAir reports, in the same country where there is one. A place with no reporting city near it takes the median of the board. Checked 3 October 2026.

How do I compare 2 cities on clean air?

Pick any 2 of the 100 at the top of this page and they appear side by side, with the head to head page where one is published.

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