Orange Center Historic District, Orange, Massachusetts Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (11 October): Air quality in Orange Center Historic District is fair. AQI and NO2 are fair; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (NO2: 22.1/100).
Air Quality Tomorrow
Tomorrow (12 October 2026): Air quality in Orange Center Historic District is fair. All pollutants stay as today. Pollution peaks around 4:00 PM (NO2: 26.2/100).
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Air Quality
Today - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 22.1/100 |
| PM2.5 (fine particles) | Good | 4.5/100 |
| PM10 (coarse particles) | Good | 4.0/100 |
| NO2 (nitrogen dioxide) | Fair | 22.1/100 |
| O3 (ozone) | Good | 17.0/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 1.8/100 |
| PM1 (ultrafine particles) | Good | 1.8/100 |
Tomorrow - 12 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 26.2/100 |
| PM2.5 (fine particles) | Good | 5.4/100 |
| PM10 (coarse particles) | Good | 4.7/100 |
| NO2 (nitrogen dioxide) | Fair | 26.2/100 |
| O3 (ozone) | Good | 17.0/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 3.0/100 |
| PM1 (ultrafine particles) | Good | 1.9/100 |
Local Environmental Conditions
This site in Orange, Massachusetts combines built-up streets with more open land, so local traffic matters, though emissions are less concentrated than in a city center. In cold weather, wood burning and other home heating become a noticeable source of fine particles. 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.
Fine particle levels climb from November to April, as home heating and traffic combine with cold, still air averaging -4°C. Warm, sunny weather from July to August, around 22°C at its peak, raises afternoon ozone levels. On any given day, wind and rain matter most: breezy or wet weather disperses pollution, while calm, dry spells let it build.
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Frequently Asked Questions About Air Quality in Massachusetts
Is air quality bad in Orange Center Historic District right now?
On 11 October 2026, overall air quality in Orange Center Historic District is fair. AQI is the main air quality indicator at 22.1/100. Pollution peaks around 4:00 PM (NO2: 22.1/100).
Will air quality be worse tomorrow in Orange Center Historic District?
On 12 October 2026, air quality conditions in Orange Center Historic District will be similar to today, with AQI forecast at fair at 26.2/100. Pollution peaks around 4:00 PM (NO2: 26.2/100).
When is air pollution at its worst in Orange Center Historic District?
Fine particle levels climb from November to April, as home heating and traffic combine with cold, still air averaging -4°C. Warm, sunny weather from July to August, around 22°C at its peak, raises afternoon ozone levels. On any given day, wind and rain matter most: breezy or wet weather disperses pollution, while calm, dry spells let it build.
Are air quality levels in Orange Center Historic District 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. |