Worst air pollution Wooster Square - New Haven, today and tomorrow
Today (16 September): Air quality in Wooster Square is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 17.4/100).
Tomorrow (17 September 2026): Air quality in Wooster Square is fair. AQI worsens to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (NO2: 25.6/100). Airmine updates local air quality forecasts four times daily.
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New Haven's Wooster Square air quality benefits from the historic park's mature cherry blossom canopy providing natural filtration in the Italian-American neighbourhood. Vehicle traffic on the surrounding Chapel Street corridor contributes modest local sources, while the park's greenspace and the neighbourhood's tree-lined character generally maintain moderate New Haven metropolitan readings and Wooster Square provides one of New Haven's more pleasant residential park environments throughout most of the year.
Today - 16 September | Pollution peaks at 11:00
AQI:
Good
17.4/100
PM2.5 (fine particles):
Good
16.7/100
PM10 (coarse particles):
Good
11.3/100
NO2 (nitrogen dioxide):
Good
8.0/100
O3 (ozone):
Good
17.4/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
2.5/100
PM1 (ultrafine particles):
Good
13.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 September | Pollution peaks at 16:00
AQI:
Fair
25.6/100
PM2.5 (fine particles):
Good
15.2/100
PM10 (coarse particles):
Good
9.6/100
NO2 (nitrogen dioxide):
Fair
25.6/100
O3 (ozone):
Good
17.6/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
14.9/100
Other Landmarks in New Haven
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Frequently Asked Questions
Is air quality bad in Wooster Square right now?
On 16 September 2026, overall air quality in Wooster Square is good. AQI is the main air quality indicator at 17.4/100. Pollution peaks around 11:00 AM (O3: 17.4/100).
Will air quality be worse tomorrow in Wooster Square?
On 17 September 2026, air quality conditions in Wooster Square will be worse than today, with AQI forecast at fair at 25.6/100. Pollution peaks around 4:00 PM (NO2: 25.6/100).
When is air pollution at its worst in Wooster Square?
Wooster Square's air quality follows a clear seasonal pattern — frequent frontal systems in spring and fall usually keep the air cleanest then, whereas summer heat waves, often worsened by haze drifting in from other regions, bring the year's worst air. Coastal sea breezes can offer some relief from inland summer ozone buildup.
Are air quality levels in Wooster Square 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: 16 September 2026 at 20:30 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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