Worst air pollution Roxborough - Philadelphia, today and tomorrow
Today (20 September): Air quality in Roxborough is fair. AQI, PM2.5, NO2, and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (NO2: 36.2/100).
Tomorrow (21 September 2026): Air quality in Roxborough is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (NO2: 38.7/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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In Roxborough, road traffic and general city density are the leading contributors to particulate matter and nitrogen dioxide here. Green space in the area offers some natural filtering, softening the local particulate load somewhat. Actual air quality on a given day still depends heavily on local wind and weather conditions.
Today - 20 September | Pollution peaks at 18:00
AQI:
Fair
36.2/100
PM2.5 (fine particles):
Fair
22.9/100
PM10 (coarse particles):
Good
14.6/100
NO2 (nitrogen dioxide):
Fair
36.2/100
O3 (ozone):
Fair
27.5/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
12.5/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 14:00
AQI:
Fair
38.7/100
PM2.5 (fine particles):
Fair
22.5/100
PM10 (coarse particles):
Good
13.3/100
NO2 (nitrogen dioxide):
Fair
38.7/100
O3 (ozone):
Fair
31.0/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
4.0/100
PM1 (ultrafine particles):
Good
10.4/100
Other Landmarks in Philadelphia
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Frequently Asked Questions
Is air quality bad in Roxborough right now?
On 20 September 2026, overall air quality in Roxborough is fair. AQI is the main air quality indicator at 36.2/100. Pollution peaks around 6:00 PM (NO2: 36.2/100).
Will air quality be worse tomorrow in Roxborough?
On 21 September 2026, air quality conditions in Roxborough will be similar to today, with AQI forecast at fair at 38.7/100. Pollution peaks around 2:00 PM (NO2: 38.7/100).
When is air pollution at its worst in Roxborough?
Air quality often dips most sharply in winter in this urban setting, as cold, stagnant air traps heating and traffic emissions close to street level through the winter. Summer shifts the concern toward ground-level ozone across the city, as heat and sunlight react with traffic-sourced emissions to drive photochemical smog. Air quality generally improves in spring and fall, when milder weather and steadier winds help disperse pollutants.
Are air quality levels in Roxborough 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: 20 September 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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