Worst air pollution Yale University Campus - New Haven, today and tomorrow
Today (4 August): Air quality in Yale University Campus is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 34.2/100).
Tomorrow (5 August 2026): Air quality in Yale University Campus is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 34.2/100). 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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New Haven's Yale University Campus air quality benefits from the extensive campus greenspace and collegiate Gothic courtyards providing natural filtration against the surrounding New Haven urban development. Vehicle traffic on the surrounding Chapel Street and Elm Street corridors contribute local sources, while the campus's mature tree canopy and green quadrangles generally maintain better conditions than the surrounding dense commercial corridors and the Long Island Sound coastal influence provides background maritime ventilation.
Today - 4 August | Pollution peaks at 09:00
AQI:
Fair
34.2/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
6.3/100
NO2 (nitrogen dioxide):
Fair
24.3/100
O3 (ozone):
Fair
34.2/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
9.5/100
Levels show the poorest local air quality during the day
Tomorrow - 5 August | Pollution peaks at 10:00
AQI:
Fair
34.2/100
PM2.5 (fine particles):
Good
11.1/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
18.7/100
O3 (ozone):
Fair
34.2/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
8.9/100
Other Landmarks in New Haven
Sports venues in New Haven
Frequently Asked Questions
Is air quality bad in Yale University Campus right now?
On 4 August 2026, overall air quality in Yale University Campus 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 Yale University Campus?
On 5 August 2026, air quality conditions in Yale University Campus will be similar to today, with AQI forecast at fair at 34.2/100. Pollution peaks around 10:00 AM (O3: 34.2/100).
When is air pollution at its worst in Yale University Campus?
Yale University Campus experiences the same seasonal air quality swings as the rest of New Haven, as spring and autumn generally bring the cleanest air, helped by more active weather patterns; by contrast, the combination of local heat and imported regional haze peaks during summer. Coastal sea breezes can offer some relief from inland summer ozone buildup.
Are air quality levels in Yale University Campus 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: 4 August 2026 at 11:06 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.
For long term forecasts and maps, see the Airmine app