Cao BaNg ไนโตรเจนไดออกไซด์ (NO₂) ระดับ

1.

Vinh, Nghe An

ดี

1xabove Standard

2.

Tra Vinh, Tra Vinh

ดี

1xbelow Standard

3.

Ho Chi Minh City, Ho Chi Minh

ดี

1xbelow Standard

4.

Ha Long, Quang Ninh

ดี

2xbelow Standard

5.

Hai Duong, Hai Duong

ดี

2xbelow Standard

6.

Bac Giang, Bac Giang

ดี

2xbelow Standard

7.

Thanh Xuan District, Ha Noi

ดี

2xbelow Standard

8.

Bac Ninh, Bac Ninh

ดี

3xbelow Standard

9.

Haiphong, HaI Phong

ดี

3xbelow Standard

10.

Hanoi, Ha Noi

ดี

3xbelow Standard