A statewide air quality monitoring network provides current information to the community. This network is known as the Base Line Air Network of EPA Tasmania, or BLANkET. Stations in the network report on particle concentrations (mainly from smoke and dust). This information is presented in the air quality table and map below. For more detailed information on how to interpret the data, see Interpreting BLANkET data.
Topics on this page:
Air Quality table -
The page linked below has a new table that lists current PM10 and PM2.5 measurements, as well as a rolling-hour average PM2.5 value. PM2.5 is the most appropriate quantity for assessing woodsmoke levels. PM10 includes smoke as well as dust. Tasmanian Department of Health air quality health categories, derived from the rolling-hour average of PM2.5, are included in the table.
Air Quality map
The interactive map below presents the most recently available data for the BLANkET stations located around the State, giving air concentration measurements for both smaller (PM2.5) and larger (PM10) particle sizes.
The map and station data plots are updated every 10 minutes throughout the day, but at times there may be a slight delay of a few minutes before they appear on the webpages.
Current data for individual stations can be accessed via the menu on the left, or by clicking on the points on the map below (at or near the small black squares).
Note: Temporary stations may be brought on line as needed, these generally have three letter abbreviations on the map. Click on the station location on the map to access the data for these sites.
Note: Use your 'Refresh' or 'Reload' button on your browser (or press F5) to update the map.
What the numbers mean
- Particle concentrations are listed on the map as "Station Abbreviation: (PM10,PM2.5)", e.g. HT: (17,4).
- Air particle concentrations are given in micrograms per cubic metre (µg m-3) and referred to as PM10 and PM2.5 concentrations. These real-time measurements are considered 'indicative' rather than 'reference-level' due to the sampling method. Reference-level measurements require the collection of samples for laboratory analysis. Note that all BLANkET instruments are calibrated against reference-level measurements before deployment to the stations.
PM10 are particles of less than 10 micrometers (millionths of a metre) in diameter
PM2.5 are particles of less than 2.5 micrometers in diameter
The PM2.5 measurement tends to reflect smaller particles such as those contained in woodsmoke, while the PM10 measurement includes smoke as well as larger particles such as contained in dust, sea-salt aerosols, and possibly some pollens.
- PM2.5 values below 5 µg m-3 signify very clear air.
- The Tasmanian Department of Health provides the following air quality health categories based on the hour-averaged PM2.5 value:
Good: up to 10 micrograms per cubic metre
Fair: 10 to 25 micrograms per cubic metre;
Poor: 25 to 100 micrograms per cubic metre
Very poor: over 100 micrograms per cubic metre.
See the Department of Health Track Air Quality page for more information (scroll to the bottom of the page for category information).
Visit the Department of Health smoke advice and air alerts pages for health-related information.
- Smoke will give a high PM2.5 signal. High PM10 levels without corresponding high PM2.5 levels arise from dust and/or sea-salt aerosols. Please see the
Interpreting BLANkET data page for more discussion of this.
Refer to the Tasmania Fire Service for information on current fires in Tasmania.
- If at any station the instantaneous PM10 is over 50 µg m-3 or PM2.5 is over 25 µg m-3 the station listing on the map will turn red. This does not signify a breach of air quality standards, but provides an indication of elevated particle levels. On a smoky winter's evening in Hobart or Launceston PM2.5 may be near 50 µg m-3 for several hours.
A '-99' is given if data are not available for any reason such as network issues or instrumental failures. Italic text signifies data older than one hour.
- For more information:
Interpreting BLANkET data
Major Air Pollutants
Particle matter - what is it and why is it a problem?
- For more in-depth information about the data and the BLANkET network see the
About BLANkET page
Air Quality Standards
The National Environmental Protection (Ambient Air Quality) Measure (known as the Air NEPM) stipulates air quality standards in Australia. For PM10 there is a 24-hour standard of 50 µg m-3 (50 millionth of a gram per cubic metre). That is, if PM10 levels measured by a reference instrument averaged over a calendar day exceeds 50 µg m-3, an exceedance of the standard is recorded. The Air NEPM stipulates that the reporting interval is the calendar day (midnight to midnight). The annual standard for PM10 is 25 µg m-3, with the reporting interval being the calendar year. For PM2.5, the 24-hour (calendar day) standard is 25 µg m-3, with an annual standard of 8 µg m-3. Currently there are no national standards for PM10 or PM2.5 for intervals shorter than 24 hours.
For more information about the Air NEPM and our reference stations see our
NEPM Monitoring Information page.
Reference Stations and Gas Concentrations
Current (unvalidated) data is available from the main air stations of Hobart (New Town), Hobart Port (sulphur dioxide), Launceston (Ti Tree Bend), Devonport, and the station at George Town (GAMS).
Validated reference data is available for the Hobart, Launceston, and Devonport stations, and the station at George Town - Reference Station Air Pollution Data
To access historical annual plots, 'most recent 30 day' plots of day-averaged BLANkET data, plots of the most-recent 3-days of 10-minute-resolution data, and tables of current data visit the Access historical BLANkET data page.
Air Quality data customer feedback survey
Please take a few minutes to complete our customer feedback survey. Thank you.
We appreciate the efforts people have made to provide feedback and will keep working on improving the way we present the information on these pages.
Click here to take the survey (hosted on an external website).