Worst air pollution Northern Liberties - Philadelphia, today and tomorrow
Today (9 August): Air quality in Northern Liberties is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 32.4/100).
Tomorrow (10 August 2026): Air quality in Northern Liberties is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 33.5/100). Airmine updates local air quality forecasts four times daily.
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Philadelphia's Northern Liberties air quality reflects the dense inner North Philadelphia neighbourhood adjacent to the Delaware River, with vehicle traffic on 2nd Street and the surrounding rapidly developing mixed residential and commercial character contributing local sources. The Delaware River provides limited ventilation, while the neighbourhood's walkable character and the surrounding residential density maintain moderate Philadelphia metropolitan readings throughout most of the year.
Today - 9 August | Pollution peaks at 09:00
AQI:
Fair
32.4/100
PM2.5 (fine particles):
Good
10.7/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Good
14.5/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Good
13.7/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Fair
33.5/100
PM2.5 (fine particles):
Good
11.6/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
14.2/100
O3 (ozone):
Fair
33.5/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Good
14.0/100
Other Landmarks in Philadelphia
Sports venues in Philadelphia
Frequently Asked Questions
Is air quality bad in Northern Liberties right now?
On 9 August 2026, overall air quality in Northern Liberties is fair. AQI is the main air quality indicator at 32.4/100. Pollution peaks around 9:00 AM (O3: 32.4/100).
Will air quality be worse tomorrow in Northern Liberties?
On 10 August 2026, air quality conditions in Northern Liberties will be similar to today, with AQI forecast at fair at 33.5/100. Pollution peaks around 9:00 AM (O3: 33.5/100).
When is air pollution at its worst in Northern Liberties?
Conditions at Northern Liberties vary noticeably across the seasons — the cleanest stretch of the year usually comes in winter, whereas extended summer heat waves, often worsened by regional haze, bring the toughest air quality stretch. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Northern Liberties based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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