Daily report · most polluted
Vietnam air quality on 15 October 2026
Bắc Ninh Bắc Ninh163
UnhealthyUS AQI
Bắc Ninh had the most polluted air of 13 Vietnamese cities
Updated · CEM
At 3:00 pm ICT on 15 October 2026, 13 Vietnamese cities were reporting. Bắc Ninh had the most polluted air at US AQI 163 (Unhealthy), followed by Nam Định (131) and Hanoi (121). The median across all cities was 67, down from 73 the day before. 1 city was at Unhealthy or worse (5 the day before). Lâm Đồng had the cleanest air at 31.
The biggest deterioration was in Ho Chi Minh City, from 71 to 118. Hanoi improved most, from 210 to 121.
- Good 3
- Moderate 5
- Unhealthy for Sensitive Groups 4
- Unhealthy 1
10 most polluted cities
| # | City | Province | US AQI | Change |
|---|---|---|---|---|
| 1 | Bắc Ninh | Bắc Ninh | 163Unhealthy | ▼ 18 |
| 2 | Nam Định | Nam Định | 131Sensitive | ▼ 38 |
| 3 | Hanoi | Hà Nội | 121Sensitive | ▼ 89 |
| 4 | Ho Chi Minh City | Hồ Chí Minh | 118Sensitive | ▲ 47 |
| 5 | Ninh Bình | Ninh Bình | 112Sensitive | ▼ 79 |
| 6 | Da Nang | Đà Nẵng | 71Moderate | ▲ 47 |
| 7 | Quảng Ngãi | Quảng Ngãi | 67Moderate | ▲ 12 |
| 8 | Hà Tĩnh | Hà Tĩnh | 62Moderate | ▼ 13 |
| 9 | Haiphong | Hải Phòng | 60Moderate | ▼ 14 |
| 10 | Quảng Ninh | Quảng Ninh | 52Moderate | ▼ 6 |
10 cleanest cities
| # | City | Province | US AQI | Change |
|---|---|---|---|---|
| 1 | Lâm Đồng | Lâm Đồng | 31Good | ▲ 9 |
| 2 | Thừa Thiên Huế | Thừa Thiên Huế | 36Good | ▲ 4 |
| 3 | Khánh Hòa | Khánh Hòa | 36Good | ▲ 18 |
| 4 | Quảng Ninh | Quảng Ninh | 52Moderate | ▼ 6 |
| 5 | Haiphong | Hải Phòng | 60Moderate | ▼ 14 |
| 6 | Hà Tĩnh | Hà Tĩnh | 62Moderate | ▼ 13 |
| 7 | Quảng Ngãi | Quảng Ngãi | 67Moderate | ▲ 12 |
| 8 | Da Nang | Đà Nẵng | 71Moderate | ▲ 47 |
| 9 | Ninh Bình | Ninh Bình | 112Sensitive | ▼ 79 |
| 10 | Ho Chi Minh City | Hồ Chí Minh | 118Sensitive | ▲ 47 |
Biggest rises
All 13 cities on 15 October 2026
| # | City | Province | US AQI | Change |
|---|---|---|---|---|
| 1 | Bắc Ninh | Bắc Ninh | 163Unhealthy | ▼ 18 |
| 2 | Nam Định | Nam Định | 131Sensitive | ▼ 38 |
| 3 | Hanoi | Hà Nội | 121Sensitive | ▼ 89 |
| 4 | Ho Chi Minh City | Hồ Chí Minh | 118Sensitive | ▲ 47 |
| 5 | Ninh Bình | Ninh Bình | 112Sensitive | ▼ 79 |
| 6 | Da Nang | Đà Nẵng | 71Moderate | ▲ 47 |
| 7 | Quảng Ngãi | Quảng Ngãi | 67Moderate | ▲ 12 |
| 8 | Hà Tĩnh | Hà Tĩnh | 62Moderate | ▼ 13 |
| 9 | Haiphong | Hải Phòng | 60Moderate | ▼ 14 |
| 10 | Quảng Ninh | Quảng Ninh | 52Moderate | ▼ 6 |
| 11 | Khánh Hòa | Khánh Hòa | 36Good | ▲ 18 |
| 12 | Thừa Thiên Huế | Thừa Thiên Huế | 36Good | ▲ 4 |
| 13 | Lâm Đồng | Lâm Đồng | 31Good | ▲ 9 |
Snapshot taken at 3:00 pm ICT from Center for Environmental Monitoring (CEM) · Envisoft. Values are the latest hourly readings at that time, not daily averages. Cities with no reading are left out.