The Hedley Environmental Index is designed to monitor and publish in real-time the level of air quality and the economic costs of Hong Kong’s air pollution in terms of its public health impact and monetary value.
The Index has two functions:
1. The Air Quality Tracker plots against the World Health Organization’s Air Quality Guidelines the real-time concentrations of four important air pollutants (PM10, NO2, SO2 and O3) measured by the Environmental Protection Department. It facilitates the graphical presentation of a historical series for each pollutant with an adjustable timeframe.
2. The Hedley Environmental Index uses the data on air pollutants and public health statistics to estimate the daily burden of doctor visits, hospital admissions and deaths, and the associated monetary value on the Hong Kong community. By showing the external costs of air pollution for the whole community, we can demonstrate the benefits that would result from air quality improvement.
Hedley Env Index tracks costs of HK air pollution