Live · world ranking
63
AQI · US scale
Moderate
The freshest-air world cities of 50 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 (Nov 2026)
Right now the cleanest world city we track is Hanoi at US AQI 11 (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
HanoiVietnam
GoodPM2.5
11
2
AucklandNew Zealand
GoodPM2.5
12
3
Los AngelesUnited States
GoodPM10
13
4
SydneyAustralia
GoodO₃
13
5
BusanSouth Korea
GoodPM2.5
17
6
WashingtonUnited States
GoodPM2.5
17
7
SantiagoChile
GoodPM2.5
18
8
DenverUnited States
GoodPM2.5
22
9
VancouverCanada
GoodPM2.5
23
10
Phnom PenhCambodia
GoodPM2.5
27
11
TorontoCanada
GoodPM2.5
28
12
SeoulSouth Korea
GoodPM2.5
28
13
TokyoJapan
GoodPM2.5
28
14
Cape TownSouth Africa
GoodPM2.5
32
15
Buenos AiresArgentina
GoodO₃
35
16
ChicagoUnited States
GoodPM2.5
36
17
ManilaPhilippines
GoodO₃
37
18
KrakowPoland
GoodPM10
37
19
LagosNigeria
GoodO₃
41
20
BeijingChina
GoodPM2.5
42
21
AthensGreece
GoodPM2.5
44
22
San FranciscoUnited States
GoodPM2.5
44
23
OsakaJapan
GoodPM2.5
50
24
Hong KongHong Kong
ModeratePM2.5
53
25
SeattleUnited States
ModeratePM2.5
53
26
New YorkUnited States
ModeratePM2.5
54
27
ColomboSri Lanka
ModeratePM2.5
56
28
Kuala LumpurMalaysia
ModeratePM2.5
56
29
SingaporeSingapore
ModeratePM2.5
57
30
Chiang MaiThailand
ModeratePM2.5
58
31
JohannesburgSouth Africa
ModeratePM2.5
59
32
LimaPeru
ModeratePM2.5
61
33
TaipeiTaiwan
ModeratePM2.5
70
34
SkopjeNorth Macedonia
ModeratePM2.5
73
35
CebuPhilippines
ModeratePM2.5
75
36
RiyadhSaudi Arabia
ModeratePM2.5
78
37
BangkokThailand
ModeratePM2.5
79
38
AmsterdamNetherlands
ModeratePM2.5
82
39
BelgradeSerbia
ModeratePM2.5
82
40
LondonUnited Kingdom
Unhealthy for Sensitive GroupsPM2.5
102
41
YangonMyanmar
Unhealthy for Sensitive GroupsPM2.5
106
42
Kuwait CityKuwait
Unhealthy for Sensitive GroupsPM2.5
113
43
KampalaUganda
Unhealthy for Sensitive GroupsPM2.5
113
44
DubaiUnited Arab Emirates
Unhealthy for Sensitive GroupsPM2.5
114
45
JakartaIndonesia
Unhealthy for Sensitive GroupsPM2.5
116
46
KathmanduNepal
Unhealthy for Sensitive GroupsPM2.5
119
47
PokharaNepal
Unhealthy for Sensitive GroupsPM2.5
129
48
SofiaBulgaria
UnhealthyPM2.5
168
49
IslamabadPakistan
UnhealthyPM2.5
169
50
RawalpindiPakistan
UnhealthyPM2.5
185
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?
Hanoi currently has the cleanest air among the world cities we track at US AQI 11.
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.