Air quality in much of BC is good compared to many areas of North America. This is particularly true for cities in BC such as the Greater Vancouver area and Victoria. Valley communities (e.g. Golden) may experience periods of poor air quality, particularly during stagnant atmospheric conditions. Two communities currently exceed the federal air quality standards; Prince George for particulate matter (PM2.5) and the community of Hope (in the Lower Fraser Valley) for ozone. Other communities are close to the PM2.5 standard, such as Quesnel and Kamloops. Communities close to exceeding the standard for ozone include Chiliwack, Langley, Kamloops and others.