Manitoba Legislative Building, Winnipeg Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Manitoba Legislative Building is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (PM2.5: 19.1/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Manitoba Legislative Building is fair. AQI worsens to fair; PM2.5 increases to fair; PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 AM (PM2.5: 27.6/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Good | 19.1/100 |
| PM2.5 (fine particles) | Good | 19.1/100 |
| PM10 (coarse particles) | Good | 15.8/100 |
| NO2 (nitrogen dioxide) | Good | 12.3/100 |
| O3 (ozone) | Good | 12.9/100 |
| SO2 (sulfur dioxide) | Good | 0.4/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 1.2/100 |
| PM1 (ultrafine particles) | Good | 1.9/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 27.6/100 |
| PM2.5 (fine particles) | Fair | 27.6/100 |
| PM10 (coarse particles) | Fair | 21.6/100 |
| NO2 (nitrogen dioxide) | Good | 19.6/100 |
| O3 (ozone) | Good | 12.7/100 |
| SO2 (sulfur dioxide) | Good | 0.8/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 1.1/100 |
| PM1 (ultrafine particles) | Good | 4.3/100 |
Local Environmental Conditions
Around this site in Winnipeg, dense development means road traffic is the main local source of nitrogen dioxide and fine particles. In cold weather, wood burning and other home heating become a noticeable source of fine particles. Pockets of trees and green space help filter a small share of the particles from traffic. Winds here are fairly strong, averaging around 15 km/h, which helps disperse local pollution.
The cooler months, October to April, see more fine particles, as home heating and traffic add emissions while frequent calm, cold mornings around -16°C keep pollution near the ground. From July to August, strong sunshine and temperatures around 22°C drive ozone formation, with levels peaking in the afternoon. Overall, stronger winds around March, about 20 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 Manitoba
Is air quality bad in Manitoba Legislative Building right now?
On 10 October 2026, overall air quality in Manitoba Legislative Building is good. AQI is the main air quality indicator at 19.1/100. Pollution peaks around 12:00 PM (PM2.5: 19.1/100).
Will air quality be worse tomorrow in Manitoba Legislative Building?
On 11 October 2026, air quality conditions in Manitoba Legislative Building will be worse than today, with AQI forecast at fair at 27.6/100. Pollution peaks around 8:00 AM (PM2.5: 27.6/100).
When is air pollution at its worst in Manitoba Legislative Building?
The cooler months, October to April, see more fine particles, as home heating and traffic add emissions while frequent calm, cold mornings around -16°C keep pollution near the ground. From July to August, strong sunshine and temperatures around 22°C drive ozone formation, with levels peaking in the afternoon. Overall, stronger winds around March, about 20 km/h on average, usually bring some of the cleanest air of the year.
Are air quality levels in Manitoba Legislative Building 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. |