Worst air pollution North Shore & Three Rivers - Pittsburgh, today and tomorrow
Today (9 August): Air quality in North Shore & Three Rivers is fair. AQI, O3, and PM1 are fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 9:00 AM (O3: 34.2/100).
Tomorrow (10 August 2026): Air quality in North Shore & Three Rivers is fair. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 35.6/100). Airmine updates local air quality forecasts four times daily.
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Pittsburgh's North Shore and Three Rivers confluence record moderate air quality, with the stadium complex generating concentrated traffic on event days and the river valleys channelling industrial-era emissions. The open river confluences provide ventilation that prevents the worst accumulation seen in Pittsburgh's enclosed valley tributaries during winter inversions.
Today - 9 August | Pollution peaks at 09:00
AQI:
Fair
34.2/100
PM2.5 (fine particles):
Good
15.1/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Good
15.3/100
O3 (ozone):
Fair
34.2/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Fair
20.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 10:00
AQI:
Fair
35.6/100
PM2.5 (fine particles):
Fair
21.0/100
PM10 (coarse particles):
Good
6.4/100
NO2 (nitrogen dioxide):
Good
18.8/100
O3 (ozone):
Fair
35.6/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.7/100
PM1 (ultrafine particles):
Fair
25.9/100
Other Landmarks in Pittsburgh
Sports venues in Pittsburgh
Frequently Asked Questions
Is air quality bad in North Shore & Three Rivers right now?
On 9 August 2026, overall air quality in North Shore & Three Rivers is fair. AQI is the main air quality indicator at 34.2/100. Pollution peaks around 9:00 AM (O3: 34.2/100).
Will air quality be worse tomorrow in North Shore & Three Rivers?
On 10 August 2026, air quality conditions in North Shore & Three Rivers will be similar to today, with AQI forecast at fair at 35.6/100. Pollution peaks around 10:00 AM (O3: 35.6/100).
When is air pollution at its worst in North Shore & Three Rivers?
North Shore & Three Rivers follows Pittsburgh's typical seasonal air quality pattern — the calmest air of the year usually arrives well after the summer ozone season fades, whereas hot, humid summer conditions and regional haze drive ozone spikes, especially during heat waves. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.
Are air quality levels in North Shore & Three Rivers 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: 10 August 2026 at 02:34 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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