At McEwens Beach we measure PM2.5 and PM10, which are finer airborne particles invisible to the naked eye.
What do the numbers mean?
Dust particles are categorised according to their size.
PM2.5 and PM10 are tiny particles that are less than 2.5 and 10 micrometres in diameter. They are not visible to the naked eye.
The amount of dust particles in the atmosphere is measured in micrograms per cubic metre (μg/m3).
The World Health Organisation provides guidelines around suitable levels of exposure to PM2.5 and PM10 over 24-hour and annual timeframes.
The Queensland Government also has an index that measures air quality on a scale from very good to very poor.
Dust levels at McEwens Beach and both Mackay sites are typically well below levels that are considered problematic.
Stronger winds can lead to elevated dust levels. Wind speed descriptions use the Beaufort Wind Scale.
The dust measurements shown above use unvalidated data, updated as per the time period indicated above the dial. We voluntarily make available this information as a useful tool for our port communities; however, it’s important to remember that the dust measurements shown may change when validated and should not be relied upon as final.
The graphs below show validated data for the most recent calendar year. All dust data shown is provided by a third-party firm, Ecotech, who manage NQBP’s dust monitoring activities at the sites of McEwens Beach, Mackay northern and southern stations. Wind and weather information is provided by Bureau of Meteorology.
In 2019, a PM2.5 level of "very good" or "good" was recorded for 93% of days of the year at our McEwen's Beach site.
In 2019, a PM10 level of "very good" or "good" was recorded for 85% of days of the year at our McEwen's Beach site.
You can also download our daily validated readings for 2019.
Sites are maintained regularly and periods of time where data is unavailable may reflect these maintenance works.
The McEwens Beach air quality monitoring program began mid-2013.
Data shown 01/01/2019-31/12/2019