Daily report · most polluted
Vietnam air quality on 17 October 2026
Hanoi Hà Nội87
ModerateUS AQI
Hanoi had the most polluted air of 13 Vietnamese cities
Updated · CEM
At 3:00 pm ICT on 17 October 2026, 13 Vietnamese cities were reporting. Hanoi had the most polluted air at US AQI 87 (Moderate), followed by Bắc Ninh (80) and Ho Chi Minh City (80). The median across all cities was 63, down from 67 the day before. 0 cities were at Unhealthy or worse (0 the day before). Thừa Thiên Huế had the cleanest air at 36.
The biggest deterioration was in Lâm Đồng, from 17 to 36. Bắc Ninh improved most, from 116 to 80.
- Good 2
- Moderate 11
10 most polluted cities
| # | City | Province | US AQI | Change |
|---|---|---|---|---|
| 1 | Hanoi | Hà Nội | 87Moderate | ▲ 3 |
| 2 | Bắc Ninh | Bắc Ninh | 80Moderate | ▼ 36 |
| 3 | Ho Chi Minh City | Hồ Chí Minh | 80Moderate | ▲ 1 |
| 4 | Quảng Ngãi | Quảng Ngãi | 80Moderate | ▲ 12 |
| 5 | Da Nang | Đà Nẵng | 66Moderate | ▼ 1 |
| 6 | Haiphong | Hải Phòng | 66Moderate | ▲ 8 |
| 7 | Ninh Bình | Ninh Bình | 63Moderate | ▼ 8 |
| 8 | Nam Định | Nam Định | 61Moderate | ▼ 5 |
| 9 | Hà Tĩnh | Hà Tĩnh | 57Moderate | ▼ 4 |
| 10 | Quảng Ninh | Quảng Ninh | 55Moderate | ▲ 3 |
10 cleanest cities
| # | City | Province | US AQI | Change |
|---|---|---|---|---|
| 1 | Thừa Thiên Huế | Thừa Thiên Huế | 36Good | ▲ 4 |
| 2 | Lâm Đồng | Lâm Đồng | 36Good | ▲ 19 |
| 3 | Khánh Hòa | Khánh Hòa | 52Moderate | new |
| 4 | Quảng Ninh | Quảng Ninh | 55Moderate | ▲ 3 |
| 5 | Hà Tĩnh | Hà Tĩnh | 57Moderate | ▼ 4 |
| 6 | Nam Định | Nam Định | 61Moderate | ▼ 5 |
| 7 | Ninh Bình | Ninh Bình | 63Moderate | ▼ 8 |
| 8 | Haiphong | Hải Phòng | 66Moderate | ▲ 8 |
| 9 | Da Nang | Đà Nẵng | 66Moderate | ▼ 1 |
| 10 | Quảng Ngãi | Quảng Ngãi | 80Moderate | ▲ 12 |
Biggest rises
All 13 cities on 17 October 2026
| # | City | Province | US AQI | Change |
|---|---|---|---|---|
| 1 | Hanoi | Hà Nội | 87Moderate | ▲ 3 |
| 2 | Bắc Ninh | Bắc Ninh | 80Moderate | ▼ 36 |
| 3 | Ho Chi Minh City | Hồ Chí Minh | 80Moderate | ▲ 1 |
| 4 | Quảng Ngãi | Quảng Ngãi | 80Moderate | ▲ 12 |
| 5 | Da Nang | Đà Nẵng | 66Moderate | ▼ 1 |
| 6 | Haiphong | Hải Phòng | 66Moderate | ▲ 8 |
| 7 | Ninh Bình | Ninh Bình | 63Moderate | ▼ 8 |
| 8 | Nam Định | Nam Định | 61Moderate | ▼ 5 |
| 9 | Hà Tĩnh | Hà Tĩnh | 57Moderate | ▼ 4 |
| 10 | Quảng Ninh | Quảng Ninh | 55Moderate | ▲ 3 |
| 11 | Khánh Hòa | Khánh Hòa | 52Moderate | new |
| 12 | Lâm Đồng | Lâm Đồng | 36Good | ▲ 19 |
| 13 | Thừa Thiên Huế | Thừa Thiên Huế | 36Good | ▲ 4 |
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.