Worst air pollution Millcreek, Pennsylvania, today and tomorrow
Today (20 September): Air quality in Millcreek, Pennsylvania is fair. AQI and NO2 are fair; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (NO2: 36.9/100).
Tomorrow (21 September 2026): Air quality in Millcreek, Pennsylvania is moderate. AQI worsens to moderate; NO2 increases to moderate; all other pollutants stay as today. Pollution peaks around 6:00 PM (NO2: 40.3/100). Airmine updates local air quality forecasts four times daily.
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Millcreek's air quality in Pennsylvania reflects the flat Erie County suburban position south of Erie on Lake Erie, with vehicle emissions from I-90 and the surrounding manufacturing and commercial character of this major Erie metropolitan suburb contributing local sources. Lake Erie's consistent northerly and westerly lake winds generally provide reliable maritime ventilation, while lake-effect weather patterns provide effective atmospheric washing and the Great Lakes regional industrial ozone is the primary warm-season concern.
Today - 20 September | Pollution peaks at 18:00
AQI:
Fair
36.9/100
PM2.5 (fine particles):
Good
10.1/100
PM10 (coarse particles):
Good
8.0/100
NO2 (nitrogen dioxide):
Fair
36.9/100
O3 (ozone):
Good
17.2/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.9/100
PM1 (ultrafine particles):
Good
4.3/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 18:00
AQI:
Moderate
40.3/100
PM2.5 (fine particles):
Good
10.4/100
PM10 (coarse particles):
Good
8.0/100
NO2 (nitrogen dioxide):
Moderate
40.3/100
O3 (ozone):
Good
16.9/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
4.7/100
Pollen forecast in Millcreek, Pennsylvania
View pollen forecastFrequently Asked Questions
Is air quality bad in Millcreek, Pennsylvania right now?
On 20 September 2026, overall air quality in Millcreek, Pennsylvania is fair. AQI is the main air quality indicator at 36.9/100. Pollution peaks around 6:00 PM (NO2: 36.9/100).
Will air quality be worse tomorrow in Millcreek, Pennsylvania?
On 21 September 2026, air quality conditions in Millcreek, Pennsylvania will be worse than today, with AQI forecast at moderate at 40.3/100. Pollution peaks around 6:00 PM (NO2: 40.3/100).
When is air pollution at its worst in Millcreek, Pennsylvania?
Air quality across Millcreek rises and falls with the seasons — once summer ozone season ends, winter typically offers the cleanest air, whereas summer heat waves bring the highest ozone risk, compounded by pollution drifting in from the wider region. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.
Are air quality levels in Millcreek, Pennsylvania 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 14:33 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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