Worst air pollution State College, today and tomorrow
Today (16 July): Air quality in State College is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 37.6/100).
Tomorrow (17 July 2026): Air quality in State College is fair. AQI improves to medium; NO2 increases to fair; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 40.4/100). 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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State College's air quality benefits from the Pennsylvania Ridge and Valley terrain with Penn State University campus traffic and vehicle emissions from US-322 the primary local sources. The surrounding Nittany Valley and the enclosing Bald Eagle and Tussey mountain ridgelines create topographic variation, while summer ozone from the naturally high biogenic Appalachian VOC emissions and the broader mid-Atlantic regional airshed is the primary warm-season concern.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Good
14.5/100
PM10 (coarse particles):
Good
14.7/100
NO2 (nitrogen dioxide):
Good
15.2/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
8.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
40.4/100
PM2.5 (fine particles):
Good
9.8/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Fair
24.7/100
O3 (ozone):
Medium
40.4/100
SO2 (sulfur dioxide):
Good
2.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
6.2/100
Pollen forecast in State College
View pollen forecastFrequently Asked Questions
Is air quality bad in State College right now?
On 16 July 2026, overall air quality in State College is fair. AQI is the main air quality indicator at 37.6/100. Pollution peaks around 12:00 PM (O3: 37.6/100).
Will air quality be worse tomorrow in State College?
On 17 July 2026, air quality conditions in State College will be similar to today, with NO2 forecast at fair at 24.7/100. Pollution peaks around 12:00 PM (O3: 40.4/100).
When is air pollution at its worst in State College?
Seasonal changes shape air quality across State College: the calmest air of the year usually arrives well after the summer ozone season fades, but summer heat waves bring the highest ozone risk, compounded by pollution drifting in from the wider region. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in State College 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app