Air quality in North Bay, Ontario, Canada today

Mr. Duck’s Air Quality Score

Good air today for North Bay, Ontario, 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 North Bay today is classified as Good. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 7.0 µg/m³, based on five valid observations reported through OpenAQ.

Overall conditions meet the criteria for a Good rating according to the latest 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 North Bay air‑quality feed includes five measured pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), combined nitrogen oxides (NOX), ozone (O₃) and fine particulate matter (PM₂.5). The dataset consists of thirteen individual rows collected from a single monitoring station, so the spatial coverage is limited to one location within the city. All of the most recent observations were recorded at 2026‑02‑10 22:00 UTC, and each pollutant’s entry notes that it was “Updated within 3 days,” indicating that the data are fresh as of the last update.

Across the five pollutants the observed values show a modest spread. NO₂ ranges from a low of 0.001 ppm to a high of 0.011 ppm, with a median of 0.002 ppm and the 10th‑percentile at 0.0012 ppm, suggesting that most recent readings sit near the lower end of the range. Ozone values are tightly clustered between 0.023 ppm and 0.026 ppm, with a median of 0.025 ppm and a narrow inter‑decile band (10th‑percentile 0.0234 ppm, 90th‑percentile 0.0258 ppm). PM₂.5 measurements vary from 5 µg/m³ to 12 µg/m³, with a median of 7 µg/m³ and the bulk of observations (10th‑percentile 5.4 µg/m³, 90th‑percentile 11 µg/m³) indicating modest fluctuations in particulate concentration. NO is reported at a single consistent value of 0.001 ppm across its two rows, while NOX spans 0.002 ppm to 0.012 ppm, with a median of 0.007 ppm and an inter‑decile range from 0.003 ppm to 0.011 ppm.

Because the dataset derives from only one station, it captures conditions at that specific site but may not reflect variations across other parts of North Bay. The timestamps are uniformly recent, yet the limited number of rows means that broader temporal or spatial trends cannot be assessed from this snapshot alone.

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 North Bay reflects five valid measurements and was updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a current view of ambient conditions but air quality can differ across neighbourhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows