Bonaventure Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Bonaventure is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (PM2.5: 12.0/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Bonaventure is fair. AQI worsens to fair; PM2.5 increases to fair; NO2 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (PM1: 24.9/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 12.0/100 |
| PM2.5 (fine particles) | Good | 12.0/100 |
| PM10 (coarse particles) | Good | 10.9/100 |
| NO2 (nitrogen dioxide) | Good | 9.1/100 |
| O3 (ozone) | Good | 11.3/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 0.9/100 |
| PM1 (ultrafine particles) | Good | 10.4/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 24.9/100 |
| PM2.5 (fine particles) | Fair | 20.1/100 |
| PM10 (coarse particles) | Good | 14.5/100 |
| NO2 (nitrogen dioxide) | Fair | 23.8/100 |
| O3 (ozone) | Good | 12.9/100 |
| SO2 (sulfur dioxide) | Good | 0.4/100 |
| CO (carbon monoxide) | Good | 0.7/100 |
| HCHO (formaldehyde) | Good | 1.6/100 |
| PM1 (ultrafine particles) | Fair | 24.9/100 |
Local Environmental Conditions
Around the center of Bonaventure, traffic is light and there are few concentrated sources of air pollution. Its location on the Gaspé Peninsula means regional pollution can accumulate during calm, stagnant weather. Home heating, especially wood stoves and fireplaces, adds smoke and fine particles in the colder months. The open grass and scrubland around the area can add dust in dry weather and smoke from occasional fires.
The cooler months, November to April, see more fine particles, as home heating and traffic add emissions while frequent calm, cold mornings around -10°C keep pollution near the ground. By contrast, with summer temperatures averaging only about 19°C, ozone rarely becomes a serious problem. On the plus side, breezy weather in December, with winds near 15 km/h, tends to sweep pollution away.
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Frequently Asked Questions About Air Quality in Quebec
Is air quality bad in Bonaventure right now?
On 10 October 2026, overall air quality in Bonaventure is good. AQI is the main air quality indicator at 12.0/100. Pollution peaks around 6:00 AM (PM2.5: 12.0/100).
Will air quality be worse tomorrow in Bonaventure?
On 11 October 2026, air quality conditions in Bonaventure will be worse than today, with AQI forecast at fair at 24.9/100. Pollution peaks around 5:00 PM (PM1: 24.9/100).
When is air pollution at its worst in Bonaventure?
The cooler months, November to April, see more fine particles, as home heating and traffic add emissions while frequent calm, cold mornings around -10°C keep pollution near the ground. By contrast, with summer temperatures averaging only about 19°C, ozone rarely becomes a serious problem. On the plus side, breezy weather in December, with winds near 15 km/h, tends to sweep pollution away.
Are air quality levels in Bonaventure 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. |