"deteriorating air quality" is correct and usable in written English.
You can use it when referring to the decrease in the quality of air, usually in a certain area. For example: "The deteriorating air quality in certain cities is becoming a serious health hazard."
This dynamic is creating more urban gridlock and deteriorating air quality, as well as increasing emissions.
As polling day draws close, public expectation is mounting over candidates' plans to address issues like dwindling water supplies and deteriorating air quality, so marking a break from previous parliamentary elections.
They also note that while air quality in some parts of the country has been improving, parks including Shenandoah in Virginia, the Great Smoky Mountains in North Carolina and Tennessee, and Acadia in Maine have had deteriorating air quality.
Kevin Ching, chief executive of Sotheby's Asia, said the auction house had decided to support the event because of the deteriorating air quality Hong Kong has seen over the past few decades.
Growing demand for mobility has created serious traffic congestion and deteriorating air quality in urban areas.
The deteriorating air quality, which is linked to human actions related to energy resources, has become an urgent global problem.
For open road conditions, wide, low porosity and tall vegetation leads to downwind pollutant reductions while gaps and high porosity vegetation could lead to no improvement or even deteriorated air quality.
Opencast mining operations contribute major air pollutants to the atmosphere and are responsible for environmental degradation by deteriorating the air quality in respect to dust, fine coal particles and other gaseous pollutants (Mukhopadhyay et al. 2010).
Increasing the use of air conditioners will also further increase greenhouse gas (GHG) emissions and consequently contribute to accelerated climate change and deteriorating local air quality.
Improper natural ventilation practices may deteriorate indoor air quality when in close proximity to roadways, although the intention is often to reduce energy consumption.
In the Amazon region the sugarcane harvest occurs between April and October during the months of low precipitation when fires substantially deteriorate the air quality in the surrounding areas.
