The RAC Air Health Monitor is the biggest air sensor network in Australia. Powered by hundreds of sensors, showing hour-by-hour changes to the air quality across the metropolitan area. Helping move towards a future of cleaner transport.

What are we measuring, and how?

What we monitor

The RAC Air Health Monitor measures particulate matter (PM2.5 and PM10) and nitrogen dioxide (NO2).

The particles that make up PM can be emitted from a range of sources, including vehicles, building and industry, and dust. PM can be inhaled into the lungs and sometimes enter the bloodstream, impacting cardiovascular and respiratory systems.

Transport is a major source of NO2 in built-up areas. NO2 can cause serious health conditions, including irritation and inflammation of the respiratory system. Some studies suggest there may be links between NO2 exposure and heart problems, diabetes, adverse birth outcomes, and cancer.

How we monitor

We use an interactive model which blends air quality data from our sensor network with other sources, including near real time traffic data from Main Roads WA, and motor vehicle emissions modelling from Copert Australia.

The model also includes emissions data from the Department of Climate Change, Energy, the Environment and Water’s National Pollutant Inventory (NPI) database.

1-hour average

Category

Good

Unhealthy for sensitive groups

Unhealthy

Very unhealthy

Hazardous

Colour

 

 

 

 

 

 

PM2.5 (µg/m3)

0-25

25-50

50-100

100-300

300+

PM10 (µg/m3)

0-50

50-100

100-200

200-600

600+

NO2 (ppb)

0-40

40-80

80-120

120-180

180+


24-hour average

Category

Good

Unhealthy for sensitive groups

Unhealthy

Very unhealthy

Hazardous

Colour

 

 

 

 

 

 

PM2.5 (µg/m3)

0-15

15-25

25-50

50-150

150+

PM10 (µg/m3)

0-25

25-50

50-100

100-300

300+

NO2 (ppb)

0-13

13-40

40-60

60-90

90+


Annual average

Category

Good

Unhealthy for sensitive groups

Unhealthy

Very unhealthy

Hazardous

Colour

 

 

 

 

 

 

PM2.5 (µg/m3)

0-5

5-8

8-15

15-45

45+

PM10 (µg/m3)

0-8

8-25

25-30

30-90

90+

NO2 (ppb)

0-5

5-15

15-20

20-30

30+


The RAC Air Health Monitor Index was last updated on 5, June 2024 following an independent review to better align with international and local environmental standards (RAC also commissioned an initial independent review in 2022, to ensure the appropriateness of the initial Index). These changes also allow the community to easily understand and to respond to air quality in their area.

Find out more about how our air health is rated.

Air Health Sensor graphic

Biggest network in Australia

200 sensors to be deployed

Laptop graphic

Pollutants measured

PM2.5, PM10 and NO2

Map of WA with pin drop on Perth graphic

RAC Air Health Monitor coverage

Over 9,730km2 covered

Frequently asked questions

Powered by

  • Clarity logo
  • Ramboll logo

Local air pollution and health experts led by Professor Gavin Pereira from Curtin School of Population Health, Curtin University as part of the Planning and Transport Research Centre (PATREC) have provided support of the RAC Air Health Monitor through an independent review.

Watch the below video and hear from the team at RAC, Clarity and wider stakeholders who have been involved in the RAC Air Health Monitor so far.

 

CASANZ logo

The RAC Air Health Monitor was recognised as the winner of the 2023 Clean Air Society of Australia & New Zealand WA Branch Clean Air Achievement Award.