Swan Valley Whistler's Chocolate, Middle Swan Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (11 October): Air quality in Swan Valley Whistler's Chocolate is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (PM2.5: 17.7/100).
Air Quality Tomorrow
Tomorrow (12 October 2026): Air quality in Swan Valley Whistler's Chocolate is fair. AQI worsens to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 PM (NO2: 23.7/100).
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Air Quality
Today - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 17.7/100 |
| PM2.5 (fine particles) | Good | 17.7/100 |
| PM10 (coarse particles) | Good | 11.4/100 |
| NO2 (nitrogen dioxide) | Good | 16.1/100 |
| O3 (ozone) | Good | 14.9/100 |
| SO2 (sulfur dioxide) | Good | 1.7/100 |
| CO (carbon monoxide) | Good | 0.3/100 |
| HCHO (formaldehyde) | Good | 2.6/100 |
| PM1 (ultrafine particles) | Good | 5.8/100 |
Tomorrow - 12 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 23.7/100 |
| PM2.5 (fine particles) | Good | 17.4/100 |
| PM10 (coarse particles) | Good | 11.2/100 |
| NO2 (nitrogen dioxide) | Fair | 23.7/100 |
| O3 (ozone) | Good | 13.4/100 |
| SO2 (sulfur dioxide) | Good | 1.3/100 |
| CO (carbon monoxide) | Good | 0.4/100 |
| HCHO (formaldehyde) | Good | 3.4/100 |
| PM1 (ultrafine particles) | Good | 6.5/100 |
Local Environmental Conditions
With little dense development around this site in Middle Swan, local traffic emissions are modest. The open grass and scrubland around the area can add dust in dry weather and smoke from occasional fires. Winds here are fairly strong, averaging around 20 km/h, which helps disperse local pollution. On some days, pollution drifting in from farther away outweighs local sources.
Cooler, still evenings from June to August, averaging about 11°C, tend to hold exhaust close to busy streets. Warm, sunny weather from November to March, around 27°C at its peak, raises afternoon ozone levels. Wildfire season runs roughly from November to April, when smoke from fires, near or far, can bring hazy days and very poor air quality.
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Frequently Asked Questions About Air Quality in Western Australia
Is air quality bad in Swan Valley Whistler's Chocolate right now?
On 11 October 2026, overall air quality in Swan Valley Whistler's Chocolate is good. AQI is the main air quality indicator at 17.7/100. Pollution peaks around 12:00 AM (PM2.5: 17.7/100).
Will air quality be worse tomorrow in Swan Valley Whistler's Chocolate?
On 12 October 2026, air quality conditions in Swan Valley Whistler's Chocolate will be worse than today, with AQI forecast at fair at 23.7/100. Pollution peaks around 7:00 PM (NO2: 23.7/100).
When is air pollution at its worst in Swan Valley Whistler's Chocolate?
Cooler, still evenings from June to August, averaging about 11°C, tend to hold exhaust close to busy streets. Warm, sunny weather from November to March, around 27°C at its peak, raises afternoon ozone levels. Wildfire season runs roughly from November to April, when smoke from fires, near or far, can bring hazy days and very poor air quality.
Are air quality levels in Swan Valley Whistler's Chocolate 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. |