Air quality in Saint-Zéphirin-de-Courval, Quebec, Canada today
Mr. Duck’s Air Quality Score
Good air today for Saint-Zéphirin-de-Courval, 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 Saint‑Zéphirin‑de‑Courval today is classified as Good. The primary pollutant measured is PM2.5, with a reported concentration of 8.2 µg/m³ based on two valid observations from OpenAQ data.
No other pollutants reached reporting thresholds, and the available measurements indicate that conditions remain within the Good category for this location. 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 dataset for Saint‑Zéphirin‑de‑Courval contains two recent measurement rows, one for ozone (O₃) and one for fine particulate matter (PM₂.5). Both observations were recorded at the same monitoring site, identified as “Saint‑Zéphirin‑de‑Co”, with the most current timestamp of 2026‑02‑10 22:00 UTC. Because each pollutant appears in only a single row, the available data represent a snapshot rather than an ongoing series.
For ozone, the reported concentration is 0.035 ppm. The minimum, median, and maximum values are all identical at 0.035 ppm, indicating that this single reading defines the full statistical range for O₃ in the current dataset. Likewise, PM₂.5 shows a uniform value of 8.2 µg/m³ across its sole record, with no variation between minimum, median or maximum.
The freshness of the data is high: both pollutants were last updated within three days of today, and there are no older, unknown, or missing timestamps in the file. However, because only one station contributes measurements for each pollutant, spatial coverage across Saint‑Zéphirin‑de‑Courval is limited to that single location. Consequently, while the numbers are current, they may not capture variations that occur elsewhere in the city or at different times of day.
In summary, the dataset provides up‑to‑date values for O₃ and PM₂.5 from one monitoring point, with identical min‑median‑max figures reflecting a lack of temporal spread. Users should keep in mind that conditions can differ across neighborhoods, and additional measurements would be needed to describe citywide air quality more comprehensively.
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 Saint‑Zéphirin‑de‑Courval includes two valid measurements and was refreshed recently, being Updated within 3 days (last update: 2026‑02‑10T22:00:00+00:00). These values represent a brief snapshot of conditions at the time they were recorded. Air quality can vary by location and time within the city, so this information may not reflect conditions elsewhere or moments after the timestamp.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Saint-Z�phirin-de-Co | o3 | 0.035 | ppm | 2026-02-10 22:00 UTC |
| Saint-Z�phirin-de-Co | pm25 | 8.2 | µg/m³ | 2026-02-10 22:00 UTC |