Worst air pollution West Haven, today and tomorrow
Today (16 July): Air quality in West Haven 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: 36.5/100).
Tomorrow (17 July 2026): Air quality in West Haven is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 38.5/100). 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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West Haven's air quality reflects the Connecticut coastal position adjacent to New Haven on Long Island Sound, with vehicle emissions from I-95 and the surrounding university and industrial legacy contributing local sources. The Long Island Sound coastal position provides maritime ventilation, while the broader New York metropolitan area's regional ozone and PM2.5 on prevailing southwesterlies elevates background pollution above the Connecticut coastal baseline throughout the summer ozone season.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
36.5/100
PM2.5 (fine particles):
Good
9.8/100
PM10 (coarse particles):
Good
10.1/100
NO2 (nitrogen dioxide):
Good
6.7/100
O3 (ozone):
Fair
36.5/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.5/100
PM1 (ultrafine particles):
Good
6.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
38.5/100
PM2.5 (fine particles):
Good
7.5/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
7.3/100
O3 (ozone):
Fair
38.5/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
5.0/100
Pollen forecast in West Haven
View pollen forecastFrequently Asked Questions
Is air quality bad in West Haven right now?
On 16 July 2026, overall air quality in West Haven is fair. AQI is the main air quality indicator at 36.5/100. Pollution peaks around 12:00 PM (O3: 36.5/100).
Will air quality be worse tomorrow in West Haven?
On 17 July 2026, air quality conditions in West Haven will be similar to today, with AQI forecast at fair at 38.5/100. Pollution peaks around 1:00 PM (O3: 38.5/100).
When is air pollution at its worst in West Haven?
West Haven's air quality has a clear seasonal rhythm. In short, the cleanest conditions typically arrive with the more unsettled weather of spring and autumn, whereas summer heat and regional haze drifting up from the Midwest and South drive ozone spikes. Coastal sea breezes can offer some relief from inland summer ozone buildup.
Are air quality levels in West 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: 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