Air Quality
The San Diego Region
has made great strides towards clean air.
Despite continued growth
in population and motor vehicle usage, the San Diego Region has experienced
substantial improvement in air quality since 1977, the earliest year
with comparable data. The state one-hour ozone standard was exceeded
on 168 days in 1977, improving to 12 days over standard in 2004, chalking
up a remarkable 93% improvement. Over the same 27-year period (1977
to 2004, the region’s population grew by 70% (from 1.7 million
to 3 million) and daily motor vehicle mileage more than doubled.
Advances have been made in improving our air quality but complacency
cannot be allowed. Motor vehicles continue to be the biggest source
of air pollution in the San Diego Region. The Coalition’s work
must continue make even more improvements to our air. Information
provided by San Diego County Air Pollution
Control District.
To find out more about
air quality go to SDAPCD