Community Air Monitoring Network Updates
Clean Air Council has been engaged in an EPA funded air monitoring program in Delaware County and South and Southwest Philadelphia for about two and a half years now. In that time, Council staff have installed 60 purple air monitors and 8 high quality VOC sensors at private residences, churches, and municipal buildings across Marcus Hook, Trainer, Chester and surrounding areas in southern Delco, as well as throughout Grays Ferry, Eastwick, Kingsessing and surrounding areas in S/SW Philly. You can see all the Council’s Purple Air Monitors 24 hours a day at www.purpleair.com.
The data we have seen from these monitors over time paints a striking picture of air quality in the greater Philadelphia area:
1. Higher air quality readings occur in both Summer and Winter
2. Most days are in the moderate/yellow zone across our region, which exceeds air quality standards
3. The most significant poor air quality readings have been caused by the addition of wildfire smoke to our existing regional air quality challenges
We’ve also seen a strong correlation between when residents are noticing odors or respiratory symptoms, and when the Purple Air particulate monitors or VOC sensors are spiking. For example, air quality reached hazardous levels from June 12th-14th 2025 when smoke from the Mines Spung Wildfire in New Jersey blanketed the region. Residents noted noticeable smog, trouble breathing, and itching and swelling eyes during this poor air quality event.
In January 2026, a resident reported a noxious odor in the Kingsessing/Cedar Park neighborhoods. The red line in this graph demonstrates how the nearest Volatile Organic Compound (VOC) sensor in Kingsessing spiked within the same time period, affirming resident reports on the ground.
Residents can report air quality concerns as a simple but effective way to be an advocate for cleaner air. The more specific the information we have from impacted residents the better we can identify local pollution patterns, trends, and sources, as well as support ongoing advocacy. Residents who notice unusual and strong odors or visual signs of pollution, including, smoke, dust, heavy smog, or spills and leaks can report air quality issues to different governmental agencies.
In the case of an emergency, including strong odors, fires, spills or leaks, please call 911.
For these emergencies and other serious air pollution concerns, also call:
1. The Department of Environmental Protections (DEP) at 1-800-541-2050
2. The EPA’s National Response Center at 1-800-424-2050.
However, if you reside in Philadelphia, call the Philadelphia Air Management Services at 215-685-7580, instead of the EPA’s National Response Center. You can find more information at https://cleanair.org/complaints/.
Going forward, Council staff will continue to support our Community Air Monitoring network, including our network of incredible air monitor hosts. We hope to be able to use the data generated by our host monitors to inform advocacy efforts for cleaner, healthier air in the Philadelphia and Delaware County region.
If you would like to host a Purple Air monitor or VOC sensor, we have a few more to distribute in Delaware County. Contact Outreach Coordinator Alyssa Felix at afa@cleanair.org. You can also reach out to Advocate Russ Zerbo at rzerbo@cleanair.org any time you have air quality concerns. If you are a current air monitor host and have questions or concerns about your monitor, contact Community Organizer Jendaiya Hill at jhill@cleanair.org
