Gastown, Vancouver Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Gastown is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (PM2.5: 17.4/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Gastown is fair. AQI worsens to fair; PM2.5 increases to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (NO2: 27.5/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 17.4/100 |
| PM2.5 (fine particles) | Good | 17.4/100 |
| PM10 (coarse particles) | Good | 13.4/100 |
| NO2 (nitrogen dioxide) | Good | 9.1/100 |
| O3 (ozone) | Good | 13.4/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 0.8/100 |
| PM1 (ultrafine particles) | Good | 1.0/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 27.5/100 |
| PM2.5 (fine particles) | Fair | 22.4/100 |
| PM10 (coarse particles) | Good | 15.4/100 |
| NO2 (nitrogen dioxide) | Fair | 27.5/100 |
| O3 (ozone) | Good | 13.1/100 |
| SO2 (sulfur dioxide) | Good | 0.5/100 |
| CO (carbon monoxide) | Good | 0.6/100 |
| HCHO (formaldehyde) | Good | 1.5/100 |
| PM1 (ultrafine particles) | Good | 2.6/100 |
Local Environmental Conditions
With buildings covering much of the area around this site in Vancouver, traffic and other urban emissions are the biggest local influence on air quality. Local sources include port and shipping activity. Home heating, especially wood stoves and fireplaces, adds smoke and fine particles in the colder months. Breezes off the nearby water usually help clear pollutants away.
With summer temperatures averaging only about 17°C, ozone rarely becomes a serious problem. In contrast, fine particle levels climb from October to April, as home heating and traffic combine with cold, still air averaging -1°C. On any given day, wind and rain matter most: breezy or wet weather disperses pollution, while calm, dry spells let it build.
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Frequently Asked Questions About Air Quality in British Columbia
Is air quality bad in Gastown right now?
On 10 October 2026, overall air quality in Gastown is good. AQI is the main air quality indicator at 17.4/100. Pollution peaks around 12:00 PM (PM2.5: 17.4/100).
Will air quality be worse tomorrow in Gastown?
On 11 October 2026, air quality conditions in Gastown will be worse than today, with AQI forecast at fair at 27.5/100. Pollution peaks around 1:00 PM (NO2: 27.5/100).
When is air pollution at its worst in Gastown?
With summer temperatures averaging only about 17°C, ozone rarely becomes a serious problem. In contrast, fine particle levels climb from October to April, as home heating and traffic combine with cold, still air averaging -1°C. On any given day, wind and rain matter most: breezy or wet weather disperses pollution, while calm, dry spells let it build.
Are air quality levels in Gastown 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. |