São Gabriel da Cachoeira Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in São Gabriel da Cachoeira is fair. AQI, PM2.5, and PM10 are fair; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (PM2.5: 21.5/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in São Gabriel da Cachoeira is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (PM2.5: 23.4/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 21.5/100 |
| PM2.5 (fine particles) | Fair | 21.5/100 |
| PM10 (coarse particles) | Fair | 20.4/100 |
| NO2 (nitrogen dioxide) | Good | 0.2/100 |
| O3 (ozone) | Good | 7.3/100 |
| SO2 (sulfur dioxide) | Good | 0.2/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.7/100 |
| PM1 (ultrafine particles) | Good | 8.9/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 23.4/100 |
| PM2.5 (fine particles) | Fair | 23.4/100 |
| PM10 (coarse particles) | Fair | 21.6/100 |
| NO2 (nitrogen dioxide) | Good | 0.2/100 |
| O3 (ozone) | Good | 6.9/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 0.7/100 |
| PM1 (ultrafine particles) | Good | 10.8/100 |
Local Environmental Conditions
The center of São Gabriel da Cachoeira combines built-up streets with more open land, so local traffic matters, though emissions are less concentrated than in a city center. Woodland in the area offers some natural filtering of particles from traffic. Open water nearby lets breezes move freely across the area, helping to disperse pollutants. On some days, pollution drifting in from farther away outweighs local sources.
Rain falls through much of the year, which regularly washes particles out of the air, so air quality changes less with the seasons than in drier climates. With temperatures around 26°C all year, sunny afternoons can raise ozone levels in any month, especially near busy roads. 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 Amazonas
Is air quality bad in São Gabriel da Cachoeira right now?
On 10 October 2026, overall air quality in São Gabriel da Cachoeira is fair. AQI is the main air quality indicator at 21.5/100. Pollution peaks around 10:00 AM (PM2.5: 21.5/100).
Will air quality be worse tomorrow in São Gabriel da Cachoeira?
On 11 October 2026, air quality conditions in São Gabriel da Cachoeira will be similar to today, with AQI forecast at fair at 23.4/100. Pollution peaks around 9:00 AM (PM2.5: 23.4/100).
When is air pollution at its worst in São Gabriel da Cachoeira?
Rain falls through much of the year, which regularly washes particles out of the air, so air quality changes less with the seasons than in drier climates. With temperatures around 26°C all year, sunny afternoons can raise ozone levels in any month, especially near busy roads. Day to day, calm and dry conditions let pollution build, while wind and rain clear it away.
Are air quality levels in São Gabriel da Cachoeira 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. |