Watsons Bay Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Watsons Bay is moderate. AQI and NO2 are moderate; PM2.5, PM10, O3, and PM1 are fair; SO2, CO, and HCHO are good. Pollution peaks around 11:00 AM (NO2: 40.5/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Watsons Bay is fair. AQI improves to fair; PM2.5 decreases to good; NO2 decreases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 31.9/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Moderate | 40.5/100 |
| PM2.5 (fine particles) | Fair | 23.2/100 |
| PM10 (coarse particles) | Fair | 26.1/100 |
| NO2 (nitrogen dioxide) | Moderate | 40.5/100 |
| O3 (ozone) | Fair | 37.3/100 |
| SO2 (sulfur dioxide) | Good | 6.6/100 |
| CO (carbon monoxide) | Good | 0.6/100 |
| HCHO (formaldehyde) | Good | 12.4/100 |
| PM1 (ultrafine particles) | Fair | 22.2/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 31.9/100 |
| PM2.5 (fine particles) | Good | 19.8/100 |
| PM10 (coarse particles) | Fair | 23.9/100 |
| NO2 (nitrogen dioxide) | Fair | 20.3/100 |
| O3 (ozone) | Fair | 31.9/100 |
| SO2 (sulfur dioxide) | Good | 5.7/100 |
| CO (carbon monoxide) | Good | 0.6/100 |
| HCHO (formaldehyde) | Good | 7.5/100 |
| PM1 (ultrafine particles) | Fair | 20.3/100 |
Local Environmental Conditions
With little dense development around Watsons Bay, local traffic emissions are modest. Breezes off the nearby water usually help clear pollutants away. Air arriving from elsewhere in the region adds to what is produced locally. Exhaust from nearby roads is usually highest close to busy streets and junctions. Smaller sources, such as construction, lawn equipment and barbecues, add to the mix.
Ozone is the main concern from December to March, when sunny days averaging 23°C turn traffic and other emissions into ozone by mid-afternoon. Cooler, still evenings from June to August, averaging about 14°C, tend to hold exhaust close to busy streets. Overall, stronger winds around July, about 15 km/h on average, usually bring some of the cleanest air of the year.
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Frequently Asked Questions About Air Quality in New South Wales
Is air quality bad in Watsons Bay right now?
On 10 October 2026, overall air quality in Watsons Bay is moderate. AQI is the main air quality indicator at 40.5/100. Pollution peaks around 11:00 AM (NO2: 40.5/100).
Will air quality be worse tomorrow in Watsons Bay?
On 11 October 2026, air quality conditions in Watsons Bay will be better than today, with AQI forecast at fair at 31.9/100. Pollution peaks around 4:00 PM (O3: 31.9/100).
When is air pollution at its worst in Watsons Bay?
Ozone is the main concern from December to March, when sunny days averaging 23°C turn traffic and other emissions into ozone by mid-afternoon. Cooler, still evenings from June to August, averaging about 14°C, tend to hold exhaust close to busy streets. Overall, stronger winds around July, about 15 km/h on average, usually bring some of the cleanest air of the year.
Are air quality levels in Watsons Bay 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. |