Generator Air Quality Testing

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Before You Run Or Test Your Generator: Check the Air Quality First

Running or testing your Emergency Generator on a day with poor air quality could lead to significant fines from the State DEP. Below are steps on how to remain compliant:

Step 1: Check the current Air Quality Index (AQI)

Visit https://www.airnow.gov to determine AQI in your area

Step 2: Check the AQI Forecast Before Generator Testing

After 4 PM on the day prior to your scheduled run / test, review the Air Quality Forecast on airnow.gov  

Step 3: Know the Acceptable AQI levels

  • Green or Yellow Air Quality Forecast: No restrictions of generator testing the following day
  • Orange, Red, Purple, or Brown AQI: Running / Testing the generator is not permitted. Repeat these steps again after 4 PM the following day

 

Statewide Restrictions for New Jersey Operators

If any area in New Jersey reports poor air quality for the following day, generator testing is prohibited throughout the State of NJ.

Example: If Paterson NJ forecast shows Green or Yellow, and a forecast in Cape May NJ indicates Orange, Red, Purple, or Brown, no generators are to be tested anywhere in NJ.

In New Jersey, running a generator on a day with poor air quality can result in substantial fines. A violation of the regulations, specifically N.J.A.C. 7:27-19.2(d), could lead to a penalty ranging from $1,200 to $18,000

Pennsylvania Operators

  • Restrictions are based on county-level forecasts.
  • Go to https://www.airnow.gov after 5 PM the day before testing.
  • Enter your zip code and scroll to the Explore section → click Archived Dates for historical data.
  • If the forecast shows Green or Yellow, testing is allowed. Any other color means do not test.

Philadelphia-Specific Guidelines

For city-specific regulations, refer to: https://www.phila.gov

Delaware Operators

Testing and maintenance of generators is prohibited on days when there is an Air Quality Alert (as specified in section 4.4 of Regulation No. 1144). Alerts are posted on the Air Quality Forecast page and sent out via email (Subscribe by sending a blank email to join-dnrec_ozone_alerts@lists.state.de.us).

 

IMPORTANT NOTE:

Emergency Use: Emergency generators can operate for an unlimited number of hours during a declared emergency / power outage regardless of the Air Quality Alert status. The steps above apply only to normal generator testing. They do not apply to emergency events.

Connect With Foley Power Systems Today

The Foley, Inc. Power Systems team is here to assist you with AQI data, forecasts, and compliance. Don’t hesitate to reach out—we’re happy to guide you through the process.

Contact Foley for More Details Today

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