Air quality in Sherbrooke, Quebec, Canada today

Mr. Duck’s Air Quality Score

Good air today for Sherbrooke, Quebec, Canada

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Sherbrooke today is classified as Good. The primary pollutant identified is PM2.5 (fine particles).

Measurements show a PM2.5 concentration of 6.3 µg/m³, based on twelve valid observations recorded by OpenAQ. No PM10 value is available for this 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 dataset for Sherbrooke pulls measurements from six monitoring sites that together provide 23 recent rows of data. All seven pollutants tracked by the OpenAQ feed are present: ozone (O₃), fine particulate matter (PM₂.5), coarse particles (PM₁₀), ultrafine particles (PM₁), relative humidity, temperature and particle number concentration (UM003). The most up‑to‑date records were all captured on 2026‑02‑10 at 22:00 UTC for five of the pollutants, while the PM₁₀ series is older, last refreshed on 2025‑01‑13 at 23:00 UTC. This means that, apart from PM₁₀, the newest observations are less than two days old.

Across the sites the observed values show a fairly wide spread. For PM₂.5 the median concentration is 5.8 µg/m³ with individual readings ranging from just above half a µg/m³ up to 21.5 µg/m³; the 10th and 90th percentiles sit at roughly 2.75 and 20.46 µg/m³ respectively, indicating that most of the city’s recent measurements cluster toward the lower end but occasional higher spikes occur. PM₁ follows a similar pattern with a median of about 2.23 µg/m³, a minimum of zero and a maximum near 5.79 µg/m³; its inter‑percentile range (0.45 to 5.08 µg/m³) is slightly narrower than that of PM₂.5. Relative humidity measurements span from 27 % up to 81 %, with a median of 32 %; temperature varies between roughly 3 °C and 13.5 °C, centering on a median of 5 °C. The particle number concentration (UM003) shows the greatest variability, ranging from 176.5 to 1 553 particles per cm³, with a median of 536 and a 10th‑90th percentile band of about 248 to 1 350.

Because PM₁₀ data are over a year old, its current citywide picture is less reliable than the other pollutants. Overall, the dataset offers recent, multi‑site coverage for most contaminants, but users should keep in mind that conditions can differ across neighborhoods and that the older PM₁₀ record does not reflect the latest atmospheric state.

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 Sherbrooke is based on twelve valid measurements and was refreshed Updated within 3 days, with the latest update recorded at 2026‑02‑10T22:00:00+00:00. This snapshot reflects conditions across the monitoring network at that time, but air quality can vary by location and moment within the city, so values may differ from what you experience locally.

OpenAQ station rows