Air pollution hit high levels again yesterday for the seventh consecutive day, with roadside and general station indexes soaring. Urban commercial areas soared to levels of more than 90 - figures which can affect people suffering from asthma and respiratory illnesses. The Environmental Protection Department said the recent bad air was due to low wind speeds in the Pearl River Delta, meaning polluted air was not dispersed easily. Causeway Bay had a roadside air pollution index of 93, the worst level recorded yesterday. When the index reaches a level of 100 - meaning the very young, elderly and frail should stay inside - there are 150 micrograms of nitrogen dioxide per cubic metre of air. People in Causeway Bay were surprised by the high pollution figure, and said they were fed up with the poor air quality. Salesman Peter Ma, 31, said: 'The air condition today is extremely bad. I can hardly breathe. There is too much traffic here.' Student Monica Fan, 20, said: 'Compared to foreign countries, the air in Hong Kong is terrible. When I first came back from Canada, I got skin allergies from the polluted environment. 'I really hate it and I'm planning to go back.' Restaurant manager Chiu Kar-wah, 29, said: 'I've already got used to the polluted conditions in Hong Kong. 'You just have to face reality. I hope Tung Chee-hwa's Policy Address on environmental protection really will work - and fast.' Housewife Chan May-yee, 38, said: 'I have to cover my nose every time I walk in Causeway Bay, and today's conditions seem worse.' Financial consultant Eric Lo, 26, added: 'I think the Government really has to apply more policies to control vehicle emissions.'