A government report out shortly will show that overall, the UK's air quality is improving, although problems persist with ozone pollution in rural areas. Provisional air quality indicators for 2002 show that in urban areas air pollution was recorded as moderate or higher on 14 days on average per site, down from 24 days the previous year. In rural areas, the average was 23 days, compared with 30 days in 2001, although the number of days with moderate or high pollution has fluctuated between 19 days in 1987 and 48 days in 1990, with no clear trend.