Air quality in Granby, Quebec, Canada today
Mr. Duck’s Air Quality Score
Good air today for Granby, 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 Granby today is classified as Good. The primary pollutant measured is PM2.5, with a reported concentration of 5.6 µg/m³ based on two valid observations from OpenAQ data.
These measurements indicate that fine particulate levels are within the range associated with the Good category. 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
Granby’s air‑quality feed includes data for two key pollutants: ozone (O₃) and fine particulate matter (PM₂.5). Both measurements come from a single monitoring site – Granby – Parc Poitev – and the dataset contains two rows, one for each pollutant. The most recent values were recorded on 2026‑02‑10 at 22:00 UTC, which falls within the “updated within three days” freshness window, so the information reflects very current conditions.
For ozone, the sensor reports a single value of 0.044 ppm. Because there is only one observation, the minimum, median, and maximum are all identical at 0.044 ppm, indicating no observed variability in this snapshot. PM₂.5 shows a comparable pattern: the recorded concentration is 5.6 µg/m³, again with the same figure appearing as the minimum, median and maximum. The lack of spread (p10 and p90 both equal the single value) means that, at the time of measurement, the site did not capture any range of concentrations for either pollutant.
The dataset’s coverage is limited to this one location, so it does not represent spatial differences across Granby. While the timestamps are recent, the small number of rows and the absence of multiple readings mean the data provide a point‑in‑time picture rather than a broader view of how ozone or PM₂.5 may fluctuate throughout the city or over longer periods. Users should keep in mind that conditions can vary by neighbourhood and time of day, even though the current snapshot is up‑to‑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 data shown for Granby reflects two valid measurements and was updated within 3 days, with the latest reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a brief view of current conditions; however, air quality can differ across neighbourhoods and change throughout the day, so values may not represent every location or moment in the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Granby - Parc Poitev | o3 | 0.044 | ppm | 2026-02-10 22:00 UTC |
| Granby - Parc Poitev | pm25 | 5.6 | µg/m³ | 2026-02-10 22:00 UTC |