Monitoring the environment

EPA AirWatch


Disclaimer | Siting

Air quality index categories

AQI very good air quality Very good air quality AQI good air quality Good air quality AQI fair air quality Fair air quality AQI poor air quality Poor air quality AQI very poor air quality Very poor air quality "" Not available "" Incident air monitoring

Health categories

"" Unhealthy for sensitive groups "" Unhealthy all "" Very unhealthy all "" Hazardous "" Hazardous extreme

Disclaimer: Data on EPA AirWatch comes directly from our air monitoring stations using various types of monitoring equipment and methods. This data may be adjusted later according to set criteria to account for instrument errors, power interruptions and other technical issues.

Siting: EPA aims to locate our ambient monitoring stations so they give a good representation of the air quality experienced by the public. As most of the Victorian population lives and works close to roads, most of our stations are in population centres next to roads. This can mean we do not always comply with one of the requirements of the Australian Standard for siting (AS 3580.1.1), which specifies that air monitoring stations should be more than 50 metres away from a road. Currently, Footscray is the only EPA air monitoring site that meets this requirement.

Current notices

  • EPA has upgraded eight of its air quality monitors to improve accuracy for PM2.5 readings. This may result in a small difference in recorded values at very low readings (less than 10) in the VERY GOOD and GOOD categories from 9 February 2017.

  • Footscray air monitoring station is offline due to routine maintenance and no data is currently being collected at this station. EPA expects data to become available on the website from 5:00pm, 22/02/2017. The air quality forecast for Melbourne is expected to be GOOD to FAIR. (22 February 2017)

  • Moe air monitoring station is offline due to routine maintenance and no data is being collected at this station. (22 February 2017)

  • Dandenong: Monitoring for PM2.5 is offline due to routine maintenance and PM2.5 data is not being collected at this station. (21 February 2017)

  • Altona: Monitoring for sulphur dioxide is offline due to routine maintenance and sulphur dioxide data is currently being collected at this station. EPA expects data to become available on the website from 12pm, 22/02/17. The air quality forecast for Melbourne is expected to be GOOD to VERY GOOD. (21 February 2017).
  • Mooroolbark: Monitoring for PM10 is offline due to routine maintenance and PM10 data is not being collected at the station. EPA expects data to become available on the website from 5pm, 22/02/17. The air quality forecast for Melbourne is expected to be  GOOD to VERY GOOD. (21 February 2017)

  • Traralgon : Monitoring for sulphur dioxide is offline due to technical difficulties and sulphur dioxide data is not being collected at the station. EPA technicians are working to fix the problem. (17 February 2017)  

  • Geelong: Monitoring for PM2.5 is offline due to technical difficulties and PM2.5 data is not being collected at the station. EPA technicians are working to fix the problem. (6 February 2017)
  • Humidity: Humidity can cause low visibility readings in EPA’s air monitoring network due to high levels of moisture in the air. EPA staff will monitor visibility readings during periods forecast for high levels of humidity and communicate any issues if required. (30 January 2017) 
  • Richmond: EPA is looking for a new site for its Richmond air monitoring due to problems with access at its existing location. Interim monitoring equipment will soon be installed in a location near Melbourne’s CBD to monitor PM2.5. Until the new location is confirmed, air monitoring data from Richmond will not be displayed. (16 September 2016)

Learn more about EPA AirWatch

NATA accreditation number: 15113

Page last updated on 22 Feb 2017