Live · world ranking
73
AQI · US scale
Moderate
The freshest-air world cities of 46 reporting right now.
Rankings › Cleanest cities in the world
Cleanest Cities in the World Right Now
The cleanest major cities worldwide right now, ranked by lowest live US AQI from OpenAQ station data.
Right now (Sep 2026)
Right now the cleanest world city we track is Auckland at US AQI 1 (Good).
Good 0–50Satisfactory 51–100Moderate 101–200Poor 201–300Very Poor 301–400Severe 401–500
World cities ranked by live US AQI (cleanest first)
1
AucklandNew Zealand
GoodPM2.5
1
2
DenverUnited States
GoodPM2.5
14
3
TorontoCanada
GoodPM2.5
17
4
KrakowPoland
GoodPM10
17
5
VancouverCanada
GoodPM2.5
21
6
New YorkUnited States
GoodPM2.5
22
7
SeattleUnited States
GoodPM2.5
22
8
AmsterdamNetherlands
GoodPM2.5
26
9
Buenos AiresArgentina
GoodPM10
28
10
WashingtonUnited States
GoodPM2.5
28
11
TokyoJapan
GoodPM2.5
33
12
TaipeiTaiwan
GoodPM2.5
33
13
SofiaBulgaria
GoodPM2.5
34
14
ChicagoUnited States
GoodPM2.5
36
15
PokharaNepal
GoodPM2.5
36
16
Phnom PenhCambodia
GoodPM2.5
38
17
LondonUnited Kingdom
GoodPM2.5
50
18
BelgradeSerbia
ModeratePM2.5
55
19
LagosNigeria
ModeratePM2.5
55
20
OsakaJapan
ModeratePM2.5
57
21
AthensGreece
ModeratePM2.5
57
22
LimaPeru
ModeratePM2.5
57
23
KathmanduNepal
ModeratePM2.5
59
24
JohannesburgSouth Africa
ModeratePM2.5
61
25
Cape TownSouth Africa
ModeratePM2.5
61
26
Hong KongHong Kong
ModeratePM2.5
62
27
SkopjeNorth Macedonia
ModeratePM2.5
63
28
SeoulSouth Korea
ModeratePM2.5
64
29
YangonMyanmar
ModeratePM2.5
66
30
BangkokThailand
ModeratePM2.5
73
31
Chiang MaiThailand
ModeratePM2.5
75
32
CebuPhilippines
ModeratePM2.5
76
33
BusanSouth Korea
ModeratePM2.5
77
34
SantiagoChile
ModeratePM2.5
86
35
RiyadhSaudi Arabia
ModeratePM2.5
88
36
San FranciscoUnited States
Unhealthy for Sensitive GroupsPM2.5
107
37
Kuwait CityKuwait
Unhealthy for Sensitive GroupsPM2.5
113
38
KampalaUganda
Unhealthy for Sensitive GroupsPM2.5
127
39
Kuala LumpurMalaysia
Unhealthy for Sensitive GroupsPM2.5
131
40
IslamabadPakistan
Unhealthy for Sensitive GroupsPM2.5
137
41
RawalpindiPakistan
Unhealthy for Sensitive GroupsPM2.5
137
42
DubaiUnited Arab Emirates
UnhealthyPM2.5
158
43
PeshawarPakistan
UnhealthyPM2.5
164
44
SialkotPakistan
UnhealthyPM2.5
194
45
GujranwalaPakistan
Very UnhealthyPM2.5
205
46
LahorePakistan
Very UnhealthyPM2.5
219
About the world’s cleanest cities
These are the cleanest-air major world cities on live OpenAQ data, US EPA scale, updated hourly. Coastal cities and those with strong environmental regulation and mild, windy climates typically lead. Rankings reflect the current hour — open any city for its full report.
Frequently asked questions
Which is the cleanest city in the world right now?
Auckland currently has the cleanest air among the world cities we track at US AQI 1.
Which AQI scale is this?
The US EPA AQI scale, so cities are comparable across countries.
How often does it update?
Hourly, from live OpenAQ station data.