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Air pollution health alerts

The NSW Department of Health has developed a system of health alerts that are based on the daily air quality monitoring reports issued by the NSW Department of Environment and Conservation. In this page, you can:
see today's air pollution alert Check today's air pollution alert
see how today's air pollution index affects you See how today's air quality affects your health
find out more Find out more about air pollution and your health.

Current health alerts for the Sydney region are also available on the Bureau of Meteorology website.

How air quality affects your health

Research has shown that different air pollutants affect your health in different ways. For example, the pollutant ozone may be a problem for your lungs and airways, whereas fine particles can affect your lungs or your heart.

Different pollutants also vary in level at different times of the day and whether you are inside or outside.

The following table shows the health alerts for HIGH and HAZARDOUS levels of various pollutants that the Department of Environment & Conservation publishes each day.

Pollutant Band Health impact

Ozone

HIGH Unhealthy for sensitive people, and could cause symptoms, especially in people with asthma. Levels will be lower indoors. People with asthma should avoid exercising outdoors. If you have symptoms of asthma, shortness of breath or cough, you should rest and use your reliever medicine. If symptoms persist, seek medical advice.
HAZARDOUS Anyone could develop symptoms, especially people with asthma. Levels will be lower indoors. Everyone should avoid outdoor exertion and stay inside as much as possible. If you have cough, wheeze or shortness of breath you should rest, take your reliever medicine or seek medical advice.

Nitrogen Dioxide

HIGH People with asthma should watch for symptoms. If you have symptoms of asthma, shortness of breath or cough, rest and use your reliever medicine. If symptoms persist, seek medical advice.
HAZARDOUS Levels may be lower indoors. Everyone should avoid outdoor exertion and stay inside as much as possible. If you have cough, wheeze or shortness of breath you should rest, take your reliever medicine or seek medical advice.

Fine particles

HIGH Unhealthy for sensitive people and could cause symptoms, especially people with heart or lung disease. Levels may be lower indoors. People with heart or lung disease should avoid exercising outdoors. If you have chest pain, shortness of breath or cough, use your reliever medicine. If symptoms persist, seek medical advice.
HAZARDOUS Anyone could develop symptoms, especially people with heart or lung disease. Levels may be lower indoors. Everyone should avoid outdoor exertion and stay inside as much as possible. If you have chest pain, shortness of breath or cough, you should rest, take your reliever medicine or seek medical advice.

Ozone and fine particles

HIGH Unhealthy for sensitive people and could cause symptoms, especially people with heart or lung disease. Levels may be lower indoors. People with heart or lung disease should avoid exercising outdoors. If you have symptoms of asthma, chest pain, shortness of breath or cough, use your reliever medicine. If symptoms persist, seek medical advice.
HAZARDOUS Anyone could develop symptoms, especially people with heart or lung disease. Levels may be lower indoors. Everyone should avoid outdoor exertion and stay inside as much as possible. If you have symptoms of asthma, cough, chest pain, wheeze or shortness of breath you should rest, take your reliever medicine or seek medical advice.

More information about air pollution and your health

NSW Department of Health - Factsheets and Publications

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