Clear The Air is a volunteer organization committed to improving the air quality in Hong Kong.

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Clear The Air Quick Stats

Air Pollution Stats

  • Sixty percent of respondents to a survey say they’ve suffered very serious health problems because of Hong Kong’s polluted air.
  • Almost 8 out of 10 say they’re dissatisfied with government action to tackle the problem.
  • Hong Kong's Air Pollution Index is based on 20-year-old air-quality objectives.
  • Hong Kong’s air-quality objective for particulates is 180, but the World Health Organization guideline is 50.
  • In Australia each person has 374,800m2 of space compared to Hong Kong’s 154.4 m2 each in which to breathe the C02 and pollutants emitted.
  • That is 42 kgs emissions per m2 per Hong Kong person per year compared with 0.072 kgs emissions per m2 per Australian person per year.
  • Over 50% of the pollution in Hong Kong is produced locally.

Energy Stats

  • Power plants are the biggest local source of greenhouse gas emissions, which account for about 70% of carbon dioxide emissions (the major warming gases) in Hong Kong.
  • CLP is the biggest polluter, responsible for half of the release.
  • Between 1990 and 2005, greenhouse gas emissions in Hong Kong have increased 14%.
  • China Light and Power (CLP) and HK Electric (HEC) Holdings emit 76,273.97 tonnes of carbon dioxide (CO2) into Hong Kong's air every day. That is 3,190 tonnes per hour.
  • A typical aircon unit in a room when running can consume over 1500 watts – 100 times more energy than the Compact Fluorescent Lamp.
  • Leaving an aircon running for 1 hour with no one in the room is equivalent to leaving the light on continuously for 4 days.
  • Using ceiling fans can potentially result in electricity savings of 14% per annum for 1 DegC (approx) increase in the aircon thermostat setting and still provide good comfort levels.
  • HongKong Electric supplies electricity to only 20% of Hong Kong’s population, but it emits 40% of SO2 in the power sector.
  • From 1997 to 2004, SO2 emissions in Hong Kong increased by 50%.
  • Turning the thermostat up one degree will save 3% on your energy bill and reduce the need to generate power from burning coal.
  • Hong Kong has only 5% of the land of the Pearl River Delta, but we create 20% of all the pollution.
  • In Hong Kong (2002 stats), the energy sector accounts for 86% of the SO2 (Sulfur Dioxide), 54% of the NOx (Nitrous Oxide), 35% of the RSP (Respirable Suspended Particulates) emitted by all local sources.
  • The energy sector, mainly electricity generation, is the major source of GHG emissions, accounting for over 60% of the total local GHG emissions.

Idling Engine Stats

  • Hong Kong has the highest road traffic density in the world.
  • Hong Kong has about 567,705 vehicles with a total road length of only 2009km.
  • On average, there are 275 vehicles per km on the road.
  • Vehicles are the second largest source of air pollution in Hong Kong, contributing to 25%, 25% and 15% of the territory-wide emission of respirable suspended particulates (RSP), nitrogen oxides (NOx) and carbon dioxide (CO2) respectively.
  • Idling a vehicle for as little as 10 minutes a day consumes an average of 100 litres of petrol a year; i.e. $1,400 a year assuming petrol is priced at $14 a litre.
  • Idling a vehicle can also contaminate engine oil and accelerate the deterioration of engine components.

Tobacco Stats

  • Every year in Hong Kong, pollution from 3,800,000,000 cigarettes and cigars creates 6 tonnes of nicotine, 57 tonnes of respirable suspended particles & 295 tonnes of carbon monoxide.
  • The Air Pollution Index in your local noodle shop goes up to 200 after just two cigarettes.
  • The death toll from active and passive smoking in Hong Kong is equivalent to 20 aeroplanes each with 350 people crashing each year.
  • Less than 15% of the population in Hong Kong smoke.
  • Each pack of cigarettes a man smokes reduces the value of his life by $222. For women, the results are $94 per pack.
  • In the Hong Kong population of 6.5 million in 1998, the annual value of direct medical costs, long term care and productivity loss was US$532 million for active smoking and US$156 million for passive smoking; passive smoking accounted for 23% of the total costs. Adding the value of attributable lives lost brought the annual cost to US$9.4 billion.
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