Air quality in Gatineau, Quebec, Canada today

Mr. Duck’s Air Quality Score

Moderate air today for Gatineau, 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 Gatineau today is classified as Moderate. The primary pollutant measured is PM2.5. The most recent reading reports a PM2.5 concentration of 18.79 µg/m³. This figure is derived from an average of 14 valid measurements collected recently. The concentration is expressed in micrograms per cubic metre of air.

Data is shown via OpenAQ, which aggregates observations from participating monitoring stations. PM10 data is not available for this assessment. The summary reflects the current set of valid observations without additional interpretation. The values represent conditions measured during the latest reporting period and do not include any forecasted information. 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 OpenAQ feed for Gatineau pulls data from six monitoring sites, giving a total of thirty‑six individual rows. All seven measured pollutants—ozone (O₃), PM1, PM2.5, PM10, relative humidity, temperature and the particle count UM003—are represented, but the depth of coverage varies. Only one row contains ozone, four rows report PM10, while the other five pollutants each have five to seven recent entries. Freshness is mixed: seventeen rows have been updated within the last thirty days, thirteen are classified as old, and six have an unknown timestamp, so the most current snapshot dates to 2026‑02‑10 22:00 UTC.

PM2.5 shows a median concentration of 6.9 µg/m³ across the sites, with values ranging from zero up to 57.7 µg/m³; the tenth percentile sits just above one µg/m³ and the ninetieth near 36 µg/m³, indicating most readings cluster at the low end but occasional spikes occur. PM1 follows a similar pattern, median 3.39 µg/m³, minimum zero, maximum 21.4 µg/m³, and a wide spread between the 10th (0.23 µg/m³) and 90th (16.4 µg/m³) percentiles. PM10, based on fewer observations, has a higher median of 61.5 µg/m³ and a broader range from 20.2 to 119.5 µg/m³, suggesting that coarse particles are generally more abundant where measured.

Relative humidity and temperature also display typical urban variability: humidity median 45 % with a low of 27.8 % and a high of 55.3 %; temperature median 9.96 °C, spanning from –5.23 °C to 25.31 °C, with the 90th percentile already at the upper end of the observed range. The UM003 particle count median is 381.5 particles/cm³, but extremes run from 75 to 3 744 particles/cm³, reflecting occasional periods of much higher aerosol concentrations. Because many rows are older or lack a recent timestamp, conditions can differ noticeably across locations and times, and the dataset should be interpreted with that temporal unevenness in mind.

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

This dataset for Gatineau includes 14 valid measurements and is Updated within 30 days. The data were last refreshed on 2026-02-10T22:00:00+00:00. Air quality can vary by location and time within the city, so this snapshot may not represent conditions everywhere.

OpenAQ station rows