Lang Son ไนโตรเจนไดออกไซด์ (NO₂) ระดับ

1.

Ho Chi Minh City, Ho Chi Minh

ดี

1xabove Standard

2.

Phu Ly, Ha Nam

ดี

1xbelow Standard

3.

Ha Long, Quang Ninh

ดี

1xbelow Standard

4.

Vinh, Nghe An

ดี

1xbelow Standard

5.

Tra Vinh, Tra Vinh

ดี

1xbelow Standard

6.

Haiphong, HaI Phong

ดี

2xbelow Standard

7.

Hai Duong, Hai Duong

ดี

2xbelow Standard

8.

Hanoi, Ha Noi

ดี

2xbelow Standard

9.

Bac Ninh, Bac Ninh

ดี

2xbelow Standard

10.

Thanh Xuan District, Ha Noi

ดี

2xbelow Standard