Air quality in Mississauga, Ontario, Canada today
Mr. Duck’s Air Quality Score
Moderate air today for Mississauga, Ontario, Canada
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Mississauga today is rated as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 15.0 µg/m³, based on five valid observations collected through OpenAQ.
Overall conditions fall within the Moderate category according to the Duck score assessment. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.
Latest sensor values
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
What the data includes
The Mississauga air‑quality feed currently contains data from a single monitoring station, giving one row of measurements for each of the five tracked pollutants: nitrogen monoxide (NO), nitrogen dioxide (NO₂), total oxides of nitrogen (NOX), ozone (O₃) and fine particulate matter (PM2.5). All of the latest values were recorded at the same moment – 2026‑02‑10 22:00 UTC – so the dataset is uniformly fresh, with every pollutant updated within the past three days.
The reported concentrations span modest ranges. NO varies from a low of 0.001 ppm up to a maximum of 0.004 ppm, while its median sits at 0.0025 ppm; NO₂ shows a broader spread, ranging between 0.003 and 0.025 ppm with a median of 0.014 ppm. NOX follows a similar pattern, from 0.004 to 0.029 ppm and a median of 0.0165 ppm. Ozone values are clustered tighter, between 0.019 and 0.029 ppm, median 0.024 ppm. PM2.5 measurements range from 7.0 to 15.0 µg/m³, with a typical (median) level of 11.0 µg/m³.
Because the data come from only one site, spatial coverage across Mississauga is limited; conditions elsewhere in the city may differ from those captured at this location. Nonetheless, the dataset provides a complete snapshot for each pollutant at a recent timestamp, allowing users to see both the extreme values recorded and the central tendency for the city on that specific date and time.
Learn more about sources and filtering: About the data.
Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)
Latest sensor values (bars)
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
Data notes
The data shown reflect five valid measurements and were updated within three days, with the most recent reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a current view of Mississauga’s air quality but conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Misssissauga | no | 0.001 | ppm | 2023-07-31 18:00 UTC |
| Misssissauga | no2 | 0.003 | ppm | 2023-07-31 18:00 UTC |
| Misssissauga | nox | 0.004 | ppm | 2023-07-31 18:00 UTC |
| Misssissauga | o3 | 0.029 | ppm | 2023-07-31 18:00 UTC |
| Misssissauga | pm25 | 7.0 | µg/m³ | 2023-07-31 18:00 UTC |
| Misssissauga | no | 0.004 | ppm | 2026-02-10 22:00 UTC |
| Misssissauga | no2 | 0.025 | ppm | 2026-02-10 22:00 UTC |
| Misssissauga | nox | 0.029 | ppm | 2026-02-10 22:00 UTC |
| Misssissauga | o3 | 0.019 | ppm | 2026-02-10 22:00 UTC |
| Misssissauga | pm25 | 15.0 | µg/m³ | 2026-02-10 22:00 UTC |