Cape Cod National Golf Club, Brewster Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Cape Cod National Golf Club is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 21.0/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Cape Cod National Golf Club is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 19.6/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 21.0/100 |
| PM2.5 (fine particles) | Good | 12.1/100 |
| PM10 (coarse particles) | Good | 8.6/100 |
| NO2 (nitrogen dioxide) | Good | 6.1/100 |
| O3 (ozone) | Fair | 21.0/100 |
| SO2 (sulfur dioxide) | Good | 0.6/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 2.6/100 |
| PM1 (ultrafine particles) | Good | 5.5/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 19.6/100 |
| PM2.5 (fine particles) | Good | 8.1/100 |
| PM10 (coarse particles) | Good | 6.1/100 |
| NO2 (nitrogen dioxide) | Good | 6.8/100 |
| O3 (ozone) | Good | 19.6/100 |
| SO2 (sulfur dioxide) | Good | 0.9/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 3.1/100 |
| PM1 (ultrafine particles) | Good | 3.7/100 |
Local Environmental Conditions
With little dense development around this site in Brewster, local traffic emissions are modest. Woodland in the area offers some natural filtering of particles from traffic. Winds here are fairly strong, averaging around 25 km/h, which helps disperse local pollution. Air arriving from elsewhere in the region adds to what is produced locally.
Hot afternoons from July to August, averaging 21°C in the warmest month, are when ozone is most likely to build up. From December to April, temperatures near 2°C let smoke and particles from wood burning and traffic build up, especially on cold, still mornings. Stronger winds around January, about 30 km/h on average, usually bring some of the cleanest air of the year.
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Frequently Asked Questions About Air Quality in Massachusetts
Is air quality bad in Cape Cod National Golf Club right now?
On 10 October 2026, overall air quality in Cape Cod National Golf Club is fair. AQI is the main air quality indicator at 21.0/100. Pollution peaks around 10:00 AM (O3: 21.0/100).
Will air quality be worse tomorrow in Cape Cod National Golf Club?
On 11 October 2026, air quality conditions in Cape Cod National Golf Club will be better than today, with AQI forecast at good at 19.6/100. Pollution peaks around 12:00 PM (O3: 19.6/100).
When is air pollution at its worst in Cape Cod National Golf Club?
Hot afternoons from July to August, averaging 21°C in the warmest month, are when ozone is most likely to build up. From December to April, temperatures near 2°C let smoke and particles from wood burning and traffic build up, especially on cold, still mornings. Stronger winds around January, about 30 km/h on average, usually bring some of the cleanest air of the year.
Are air quality levels in Cape Cod National Golf Club 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. |