Urbanization

Traffic, Emissions Reduced As Arizonans Stay Home

Arizonans staying home amid the pandemic are making a measurable impact on road congestion and air quality. Weekday vehicle traffic volume is down by a third since early March, according to the Maricopa Association of Governments.

Why the Air in Metro Phoenix is Fresher These Days

Metro Phoenix was below average for moderate ozone days for the month of March. ADEQ is studying the reasons for this – including COVID-19 and recent wet weather.