Westville, New Haven Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (6 October): Air quality in Westville is moderate. AQI and PM10 are moderate; PM2.5 is fair; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (PM10: 43.2/100).
Air Quality Tomorrow
Tomorrow (7 October 2026): Air quality in Westville is good. AQI improves to good; PM2.5 decreases to good; PM10 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 17.2/100).
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Air Quality
Today - 6 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Moderate | 43.2/100 |
| PM2.5 (fine particles) | Fair | 21.4/100 |
| PM10 (coarse particles) | Moderate | 43.2/100 |
| NO2 (nitrogen dioxide) | Good | 19.0/100 |
| O3 (ozone) | Good | 14.1/100 |
| SO2 (sulfur dioxide) | Good | 0.4/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 3.0/100 |
| PM1 (ultrafine particles) | Good | 6.5/100 |
Tomorrow - 7 October
| Pollen species | Level | Value |
|---|---|---|
| AQI | Good | 17.2/100 |
| PM2.5 (fine particles) | Good | 9.8/100 |
| PM10 (coarse particles) | Good | 13.1/100 |
| NO2 (nitrogen dioxide) | Good | 11.0/100 |
| O3 (ozone) | Good | 17.2/100 |
| SO2 (sulfur dioxide) | Good | 0.5/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 3.1/100 |
| PM1 (ultrafine particles) | Good | 4.7/100 |
Local Environmental Conditions
This part of New Haven combines built-up streets with more open land, so local traffic matters, though emissions are less concentrated than in a city center. Home heating, especially wood stoves and fireplaces, adds smoke and fine particles in the colder months. Woodland in the area offers some natural filtering of particles from traffic. Winds are often light, which allows pollutants to linger close to where they are produced.
Particle levels tend to be highest from November to March, when home heating and traffic add more emissions and cold, calm spells at around -2°C slow their dispersal. Later in the year, warm, sunny weather from June to August, around 24°C at its peak, raises afternoon ozone levels. Day to day, calm and dry conditions let pollution build, while wind and rain clear it away.
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Frequently Asked Questions About Air Quality in Connecticut
Is air quality bad in Westville right now?
On 6 October 2026, overall air quality in Westville is moderate. AQI is the main air quality indicator at 43.2/100. Pollution peaks around 8:00 AM (PM10: 43.2/100).
Will air quality be worse tomorrow in Westville?
On 7 October 2026, air quality conditions in Westville will be better than today, with AQI forecast at good at 17.2/100. Pollution peaks around 12:00 PM (O3: 17.2/100).
When is air pollution at its worst in Westville?
Particle levels tend to be highest from November to March, when home heating and traffic add more emissions and cold, calm spells at around -2°C slow their dispersal. Later in the year, warm, sunny weather from June to August, around 24°C at its peak, raises afternoon ozone levels. Day to day, calm and dry conditions let pollution build, while wind and rain clear it away.
Are air quality levels in Westville 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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |