Worst air pollution New Haven, today and tomorrow
Today (13 July): Air quality in New Haven is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 36.9/100).
Tomorrow (14 July 2026): Air quality in New Haven is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (O3: 36.6/100). 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 air quality reflects the Long Island Sound coastal position, with Atlantic and Sound sea breezes providing maritime ventilation and the surrounding Connecticut hills creating modest topographic variation. Vehicle emissions from I-91 and I-95 and upwind industrial and urban sources from the New York metropolitan area corridor are the primary concerns, while the harbour provides direct maritime ventilation from the Sound on southerly and easterly wind days.
Today - 13 July | Pollution peaks at 11:00
AQI:
Fair
36.9/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
12.4/100
NO2 (nitrogen dioxide):
Good
9.9/100
O3 (ozone):
Fair
36.9/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
9.4/100
Levels show the poorest local air quality during the day
Tomorrow - 14 July | Pollution peaks at 08:00
AQI:
Fair
36.6/100
PM2.5 (fine particles):
Good
13.1/100
PM10 (coarse particles):
Good
8.6/100
NO2 (nitrogen dioxide):
Good
11.4/100
O3 (ozone):
Fair
36.6/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.9/100
PM1 (ultrafine particles):
Good
9.0/100
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Frequently Asked Questions
Is air quality bad in New Haven right now?
On 13 July 2026, overall air quality in New Haven is fair. AQI is the main air quality indicator at 36.9/100. Pollution peaks around 11:00 AM (O3: 36.9/100).
Will air quality be worse tomorrow in New Haven?
On 14 July 2026, air quality conditions in New Haven will be similar to today, with AQI forecast at fair at 36.6/100. Pollution peaks around 8:00 AM (O3: 36.6/100).
When is air pollution at its worst in New Haven?
New Haven sees air quality change through the year, as the shoulder seasons bring the most consistently clean air of the year; by contrast, hot, humid summer days bring the highest ozone risk, often worsened by pollution transported in from other regions. Coastal sea breezes can offer some relief from inland summer ozone buildup.
Are air quality levels in New Haven 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: 13 July 2026 at 21:48 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