Air Quality


Cache County has been designated as a non-attainment area for PM2.5. The area has periodic serious winter inversions when PM2.5 levels are high. Cache County implemented a program of emissions testing, but much more must be done to protect the health of citizens. Logan City is committed to doing its part to improve air quality in Cache County and to create opportunities for Logan City residents to do the same.

Learn more about Logan City Air Quality Initiatives Below:
Idle free variation 7
In 2014, Logan City strengthened their anti-idling ordinance to make it against municipal code to idle for longer than 2 minutes when the temperature is above 0 degrees (F).  The code is
10.52.270: EXCESSIVE NOISE AND POLLUTION and can be found here:

Due to a generous grant from UCAIR, we were able to purchase signs to place throughout Logan City to remind residents of the idling ordinance.  We still have signs available!  if your business would like to place one at your establishment, please call Emily at 435-716-9792 or email her.  You can see a sample of the sign to the right. 

We want to express our appreciation for UCAIRs generous sponsorship of these projects and are grateful that we can partner with this organization to learn more about clean air initiatives from other UCAIR partners throughout the State of Utah.  

Air Quality Links:

Please visit the following links to learn more about Air Quality in Cache County and what you can do to help reduce your contribution to air pollution.

Utah Clean Air Partnership (UCAIR)
Utah Department of Environmental Quality Cache County Current Conditions
Air Now
Cache Clean Air Consortium
Utah Clean Cities
More Air Quality Initatives:

As part of a federal grant from the Cache Metropolitan Planning Organization we were given funding to retrofit older diesel engines and fit them with a Diesel Oxidation Catalyst (DOC). The DOC acts like a catalytic converter that you would find on a gasoline engine, but these are designed specifically for a diesel engine.  This changes the chemical output of the exhaust.  The EPA indicates we can expect the following results: 

  • Reduction in emissions of PM (typically the soluble organic fraction that comes from unburned fuel and oil) by 20-40%
  • Reduction in hydrocarbons by 40-75%
  • Reduction in carbon monoxide by 10-60% 

We have retrofitted 14 large dump trucks and waste collection vehicles with DOCs.

As part of Community Bridges Iniative (CBI) we have performed an air quality survey to obtain cursory information about community perspectives on air quality that may help inform future studies about air quality.

Also part of CBI, we participated in a Logan High School poster program with USU’s Ed Stafford and Roslyn Brain.  There were some great posters created through this program, but, more importantly, a majority of students who participated in this program (who are new drivers) reported learning about the specific air quality challenges we face in our state for the first time and reported feeling resolute that they would change their driving habits in the future.

Roslyn Brain’s class had a group that produced some clean air bumper stickers. 

The police department has started doing some patrol using segues.