São Gonçalo do Amarante Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in São Gonçalo do Amarante is fair. AQI, PM2.5, PM10, and PM1 are fair; NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (PM10: 26.7/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in São Gonçalo do Amarante is fair. PM2.5 decreases to good; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 PM (PM10: 21.4/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 26.7/100 |
| PM2.5 (fine particles) | Fair | 23.4/100 |
| PM10 (coarse particles) | Fair | 26.7/100 |
| NO2 (nitrogen dioxide) | Good | 0.0/100 |
| O3 (ozone) | Good | 6.9/100 |
| SO2 (sulfur dioxide) | Good | 0.2/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.6/100 |
| PM1 (ultrafine particles) | Fair | 20.5/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 21.4/100 |
| PM2.5 (fine particles) | Good | 18.3/100 |
| PM10 (coarse particles) | Fair | 21.4/100 |
| NO2 (nitrogen dioxide) | Good | 0.0/100 |
| O3 (ozone) | Good | 7.0/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.3/100 |
| HCHO (formaldehyde) | Good | 0.6/100 |
| PM1 (ultrafine particles) | Good | 12.1/100 |
Local Environmental Conditions
The center of São Gonçalo do Amarante combines built-up streets with more open land, so local traffic matters, though emissions are less concentrated than in a city center. Sea breezes along the coast usually help ventilate the area. Local sources include the airport. Open grassland and scrub can produce smoke during grass fires and some dust in dry spells.
The dry season, roughly September to December, brings the haziest air, as dust and smoke build up without rain to clear them. The wettest months, May to June, usually bring the cleanest air. With temperatures around 26°C all year, sunny afternoons can raise ozone levels in any month, especially near busy roads.
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Frequently Asked Questions About Air Quality in Rio Grande do Norte
Is air quality bad in São Gonçalo do Amarante right now?
On 10 October 2026, overall air quality in São Gonçalo do Amarante is fair. AQI is the main air quality indicator at 26.7/100. Pollution peaks around 1:00 PM (PM10: 26.7/100).
Will air quality be worse tomorrow in São Gonçalo do Amarante?
On 11 October 2026, air quality conditions in São Gonçalo do Amarante will be similar to today, with AQI forecast at fair at 21.4/100. Pollution peaks around 5:00 PM (PM10: 21.4/100).
When is air pollution at its worst in São Gonçalo do Amarante?
The dry season, roughly September to December, brings the haziest air, as dust and smoke build up without rain to clear them. The wettest months, May to June, usually bring the cleanest air. With temperatures around 26°C all year, sunny afternoons can raise ozone levels in any month, especially near busy roads.
Are air quality levels in São Gonçalo do Amarante 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. |