Gruyere, Shire of Yarra Ranges Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (11 October): Air quality in Gruyere is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (PM2.5: 13.3/100).
Air Quality Tomorrow
Tomorrow (12 October 2026): Air quality in Gruyere is fair. AQI worsens to fair; PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM2.5: 22.2/100).
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Air Quality
Today - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 13.3/100 |
| PM2.5 (fine particles) | Good | 13.3/100 |
| PM10 (coarse particles) | Good | 9.4/100 |
| NO2 (nitrogen dioxide) | Good | 1.5/100 |
| O3 (ozone) | Good | 12.8/100 |
| SO2 (sulfur dioxide) | Good | 0.2/100 |
| CO (carbon monoxide) | Good | 0.3/100 |
| HCHO (formaldehyde) | Good | 2.3/100 |
| PM1 (ultrafine particles) | Good | 1.5/100 |
Tomorrow - 12 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 22.2/100 |
| PM2.5 (fine particles) | Fair | 22.2/100 |
| PM10 (coarse particles) | Good | 14.1/100 |
| NO2 (nitrogen dioxide) | Good | 7.9/100 |
| O3 (ozone) | Good | 12.6/100 |
| SO2 (sulfur dioxide) | Good | 1.1/100 |
| CO (carbon monoxide) | Good | 0.3/100 |
| HCHO (formaldehyde) | Good | 3.2/100 |
| PM1 (ultrafine particles) | Good | 4.9/100 |
Local Environmental Conditions
Around this part of Shire of Yarra Ranges, traffic is light and there are few concentrated sources of air pollution. The open grass and scrubland around the area can add dust in dry weather and smoke from occasional fires. The surrounding woodland releases natural compounds that, in warm sunny weather, help form ozone. Light average winds mean local emissions are not always carried away quickly.
Summers are mild, averaging around 20°C in the warmest month, so ozone usually stays moderate even from December to March. In contrast, cold spells from June to July, at around 6°C on average, are when smoke from wood burning and traffic lingers longest. Meanwhile, dry weather in February lets wind lift dust from open ground, raising coarse particle levels and sometimes leaving a dusty haze.
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Frequently Asked Questions About Air Quality in Victoria
Is air quality bad in Gruyere right now?
On 11 October 2026, overall air quality in Gruyere is good. AQI is the main air quality indicator at 13.3/100. Pollution peaks around 10:00 AM (PM2.5: 13.3/100).
Will air quality be worse tomorrow in Gruyere?
On 12 October 2026, air quality conditions in Gruyere will be worse than today, with AQI forecast at fair at 22.2/100. Pollution peaks around 11:00 PM (PM2.5: 22.2/100).
When is air pollution at its worst in Gruyere?
Summers are mild, averaging around 20°C in the warmest month, so ozone usually stays moderate even from December to March. In contrast, cold spells from June to July, at around 6°C on average, are when smoke from wood burning and traffic lingers longest. Meanwhile, dry weather in February lets wind lift dust from open ground, raising coarse particle levels and sometimes leaving a dusty haze.
Are air quality levels in Gruyere 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. |