Ha Noi Ozone (O₃) Level
Vietnam
See Air Quality ofHa Noi
MapHa Noi
Download 2024 Annual Data
World Air Quality Report
Do you know that Ozone's total mass is 3 billion metric tons in the atmosphere? It looks like a lot but has only 0.00006% of the atmosphere. Besides, Ozone's peak concentration is 32 kilometres above the Earth's surface.
Most Polluted Cities 2026
Vietnam
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Lang Son, Lang Son
Good
1xbelow Standard
2.
Bac Giang, Bac Giang
Good
1xbelow Standard
3.
Thanh pho Thai Nguyen, Thai Nguyen
Good
1xbelow Standard
4.
Cao Bang, Cao BaNg
Good
1xbelow Standard
5.
Ho Chi Minh City, Ho Chi Minh
Good
1xbelow Standard
6.
Bac Ninh, Bac Ninh
Good
1xbelow Standard
7.
Lao Cai, Lao Cai
Good
1xbelow Standard
8.
Hai Duong, Hai Duong
Good
2xbelow Standard
9.
Tra Vinh, Tra Vinh
Good
2xbelow Standard
10.
Haiphong, HaI Phong
Good
2xbelow Standard
Last Updated: 04 Jun 2026, 07:57 AM
AQI City RankingsUncovering the Sources of Ozone (O₃): Where Does It Come From?
Refineries
Industrial processes emit substances.
Power plants
Emissions from burning fossil fuels.
Paints evaporations
Vocs from paints react with sunlight.
Transportation
Diesel operated vehicles reacts and form ozone.Short-Term O₃ Exposure Impacts
Chest pain
Discomfort or pain in the chest due to respiratory stress.
Breathing shortness
Difficulty in breathing or feeling of breathlessness.
Respiratory irritation
Inflammation and irritation of the respiratory tract.
Wheezing and coughing
Whistling sound and persistent cough.
Trigger asthma attacks
Aggravation of asthma symptoms.Why you should care about Ozone (O₃)?
Know More About O₃ Sensor
