LIVE • 2026-08-26

Highest NO2 cities right now

Top 30 cities ranked by current NO2 concentration across all 217 tracked locations. Refreshes every 30 minutes. The highest NO2 right now is in Tehran, Iran at 98.2 ppb. WHO 2021 annual guideline: 10 μg/m³ (~5 ppb).

#1
98.2 ppb

IR

Tehran

73
AQI
PM2.5
27.5μg
PM10
27.9μg
O3
0.0ppb
Moderate
#2
84.6 ppb

CL

Santiago

155
AQI
PM2.5
57.9μg
PM10
59.6μg
O3
3.0ppb
Unhealthy
#3
77.9 ppb

CN

Chengdu

151
AQI
PM2.5
90.3μg
PM10
91.0μg
O3
28.0ppb
Unhealthy
#4
77.4 ppb

IN

Delhi

165
AQI
PM2.5
130.9μg
PM10
134.1μg
O3
8.0ppb
Unhealthy
#5
75.5 ppb

CN

Tianjin

94
AQI
PM2.5
37.1μg
PM10
38.0μg
O3
13.0ppb
Moderate
#6
74.4 ppb

CN

Beijing

100
AQI
PM2.5
43.0μg
PM10
46.0μg
O3
4.0ppb
Moderate
#7
73.8 ppb

AE

Dubai

166
AQI
PM2.5
63.6μg
PM10
96.9μg
O3
17.0ppb
Unhealthy
#8
72.7 ppb

GR

Athens

55
AQI
PM2.5
15.5μg
PM10
25.1μg
O3
8.0ppb
Moderate
#9
69.7 ppb

BR

Sao Paulo

67
AQI
PM2.5
31.0μg
PM10
33.6μg
O3
1.0ppb
Moderate
#10
67.6 ppb

ID

Jakarta

161
AQI
PM2.5
86.8μg
PM10
90.3μg
O3
55.0ppb
Unhealthy
#11
64.4 ppb

MX

Mexico City

78
AQI
PM2.5
35.7μg
PM10
38.3μg
O3
47.0ppb
Moderate
#12
63.9 ppb

ZA

Johannesburg

152
AQI
PM2.5
60.1μg
PM10
61.0μg
O3
5.0ppb
Unhealthy
#13
61.3 ppb

ES

Barcelona

39
AQI
PM2.5
8.9μg
PM10
19.4μg
O3
23.0ppb
Good
#14
60.6 ppb

PK

Lahore

161
AQI
PM2.5
88.9μg
PM10
99.0μg
O3
20.0ppb
Unhealthy
#15
59.0 ppb

MY

Kuala Lumpur

171
AQI
PM2.5
73.3μg
PM10
75.0μg
O3
37.0ppb
Unhealthy
#16
56.0 ppb

CN

Guangzhou

108
AQI
PM2.5
33.2μg
PM10
36.1μg
O3
21.0ppb
Unhealthy for Sensitive Groups
#17
53.2 ppb

CN

Xian

106
AQI
PM2.5
46.8μg
PM10
47.7μg
O3
24.0ppb
Unhealthy for Sensitive Groups
#18
51.5 ppb

KR

Daegu

86
AQI
PM2.5
27.6μg
PM10
28.3μg
O3
110.0ppb
Moderate
#19
44.6 ppb

PK

Faisalabad

161
AQI
PM2.5
81.0μg
PM10
96.2μg
O3
38.0ppb
Unhealthy
#20
44.5 ppb

MY

Johor Bahru

85
AQI
PM2.5
33.5μg
PM10
39.1μg
O3
52.0ppb
Moderate
#21
44.2 ppb

CA

Vancouver

72
AQI
PM2.5
35.6μg
PM10
35.9μg
O3
121.0ppb
Moderate
#22
44.0 ppb

US

New York

56
AQI
PM2.5
16.0μg
PM10
16.0μg
O3
37.0ppb
Moderate
#23
43.7 ppb

CN

Shenzhen

75
AQI
PM2.5
18.1μg
PM10
22.2μg
O3
41.0ppb
Moderate
#24
42.3 ppb

JP

Tokyo

66
AQI
PM2.5
28.3μg
PM10
32.6μg
O3
52.0ppb
Moderate
#25
41.0 ppb

BR

Rio de Janeiro

63
AQI
PM2.5
23.5μg
PM10
25.8μg
O3
27.0ppb
Moderate
#26
39.5 ppb

CA

Toronto

38
AQI
PM2.5
14.7μg
PM10
14.8μg
O3
52.0ppb
Good
#27
38.5 ppb

TR

Izmir

59
AQI
PM2.5
15.5μg
PM10
26.7μg
O3
32.0ppb
Moderate
#28
38.3 ppb

IL

Tel Aviv

61
AQI
PM2.5
18.3μg
PM10
30.4μg
O3
36.0ppb
Moderate
#29
35.9 ppb

VN

Hanoi

123
AQI
PM2.5
44.8μg
PM10
45.3μg
O3
66.0ppb
Unhealthy for Sensitive Groups
#30
34.5 ppb

BR

Brasilia

43
AQI
PM2.5
10.9μg
PM10
11.4μg
O3
41.0ppb
Good

About NO2

See the full NO2 guide for sources, health effects, and mitigation. Or jump back to overall most polluted cities ranked by US EPA Air Quality Index.

See also: highest PM2.5 · highest PM10 · highest O3