Nova Friburgo Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Nova Friburgo 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: 36.6/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Nova Friburgo is fair. All pollutants stay as today. Pollution peaks around 11:00 PM (PM2.5: 30.7/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 36.6/100 |
| PM2.5 (fine particles) | Fair | 36.6/100 |
| PM10 (coarse particles) | Fair | 24.6/100 |
| NO2 (nitrogen dioxide) | Good | 0.1/100 |
| O3 (ozone) | Good | 12.7/100 |
| SO2 (sulfur dioxide) | Good | 0.2/100 |
| CO (carbon monoxide) | Good | 0.3/100 |
| HCHO (formaldehyde) | Good | 0.5/100 |
| PM1 (ultrafine particles) | Good | 5.6/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 30.7/100 |
| PM2.5 (fine particles) | Fair | 30.7/100 |
| PM10 (coarse particles) | Fair | 20.8/100 |
| NO2 (nitrogen dioxide) | Good | 0.2/100 |
| O3 (ozone) | Good | 12.5/100 |
| SO2 (sulfur dioxide) | Good | 0.2/100 |
| CO (carbon monoxide) | Good | 0.3/100 |
| HCHO (formaldehyde) | Good | 0.5/100 |
| PM1 (ultrafine particles) | Good | 5.8/100 |
Local Environmental Conditions
With buildings covering much of the area around the center of Nova Friburgo, traffic and other urban emissions are the biggest local influence on air quality. Lying in a valley at around 850 m, the area is prone to temperature inversions that hold pollutants near the ground when winds drop. Industry adds to local emissions.
Air quality is usually worst in the drier months, May to July, when dust and smoke can build into a haze with little rain to wash it out. Heavy rains from December to January clear the air most effectively. With temperatures around 22°C all year, sunny afternoons can raise ozone levels in any month, especially near busy roads.
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Is air quality bad in Nova Friburgo right now?
On 10 October 2026, overall air quality in Nova Friburgo is fair. AQI is the main air quality indicator at 36.6/100. Pollution peaks around 10:00 AM (PM2.5: 36.6/100).
Will air quality be worse tomorrow in Nova Friburgo?
On 11 October 2026, air quality conditions in Nova Friburgo will be similar to today, with AQI forecast at fair at 30.7/100. Pollution peaks around 11:00 PM (PM2.5: 30.7/100).
When is air pollution at its worst in Nova Friburgo?
Air quality is usually worst in the drier months, May to July, when dust and smoke can build into a haze with little rain to wash it out. Heavy rains from December to January clear the air most effectively. With temperatures around 22°C all year, sunny afternoons can raise ozone levels in any month, especially near busy roads.
Are air quality levels in Nova Friburgo 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. |