Air quality in Rouyn-Noranda, Quebec, Canada today
Mr. Duck’s Air Quality Score
Good air today for Rouyn-Noranda, Quebec, 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 Rouyn‑Noranda is currently classified as Good. The primary pollutant measured today is PM2.5, with a recorded concentration of 2.8 µg/m³.
Two valid measurements were taken and reported via OpenAQ, confirming the PM2.5 level at the reference value of 2.8 µg/m³. 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 data for Rouyn‑Noranda includes measurements of two pollutants: ozone (O₃) and fine particulate matter (PM₂.5). Both are reported from a single monitoring location, identified as “Rouyn‑Noranda – Parc”, so the dataset contains just two rows in total—one for each pollutant. The most recent reading for each was recorded on 2026-02-10 at 22:00 UTC, and both entries carry a freshness note indicating they were updated within the past three days.
For ozone, the concentration is reported as 0.031 ppm. Because there is only one observation, the minimum, median, maximum, 10th percentile and 90th percentile values are all identical at 0.031 ppm. The same pattern holds for PM₂.5, which shows a uniform value of 2.8 µg/m³ across its single record. With no variation in the data, the typical (median) level is exactly the same as the observed range for each pollutant.
Because the coverage consists of just one site, the dataset does not capture spatial differences that might exist elsewhere in Rouyn‑Noranda, and it provides only a snapshot from a single point in time. While the timestamps are recent, the lack of multiple stations means the information cannot reflect how conditions may change across neighborhoods or over longer periods. Users should keep in mind that air quality can differ by location and moment, and the present figures represent only what was measured at the Parc site on the specified date.
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 current dataset for Rouyn‑Noranda includes two valid measurements and was updated within 3 days, with the latest refresh recorded at 2026‑02‑10T22:00:00+00:00. This information reflects a single point in time; air quality can differ across neighborhoods and change throughout the day, so conditions you experience may not match this snapshot.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Rouyn-Noranda - Parc | o3 | 0.031 | ppm | 2026-02-10 22:00 UTC |
| Rouyn-Noranda - Parc | pm25 | 2.8 | µg/m³ | 2026-02-10 22:00 UTC |