Atacama Ozone (O3) Level
Chile
See Air Quality ofAtacama
Atacama
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
Chile
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Concepcion, Biobio
Good
2xbelow Standard
2.
Rancagua, Libertador General Bernardo O Higgins
Good
2xbelow Standard
3.
Temuco, Araucania
Good
2xbelow Standard
4.
Santiago, Region Metropolitana
Good
2xbelow Standard
5.
Chillan, Biobio
Good
2xbelow Standard
6.
Coyhaique, Aysen
Good
2xbelow Standard
7.
San Bernardo, Region Metropolitana
Good
2xbelow Standard
8.
Chicureo Abajo, Region Metropolitana
Good
2xbelow Standard
9.
Calama, Antofagasta
Good
2xbelow Standard
10.
Talcahuano, Biobio
Good
2xbelow Standard
Last Updated: 16 Mar 2026, 03:45 PM
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