Air quality in Sault Ste. Marie, Michigan, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Sault Ste. Marie, Ontario, Canada
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality today in Sault Ste. Marie, Michigan is classified as Good. The primary pollutant identified for this assessment is PM2.5 (fine particles).
Measurements show a PM2.5 concentration of 2.0 µg/m³ based on six valid observations collected via OpenAQ. 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 data for Sault Ste Marie includes measurements of two pollutants: ozone (O₃) and fine particulate matter (PM₂.5). Both pollutants are reported from a single monitoring location, identified as “SAULT STE MARIE,” so the dataset contains only two rows in total—one for each pollutant.
The timestamps show that the most recent ozone reading was recorded on 2018‑10‑13 21:00 UTC and the latest PM₂.5 value on 2019‑02‑28 21:00 UTC. Because both entries are classified as “Old data,” there have been no newer observations added to this source, meaning the information does not reflect current conditions in the city.
Each pollutant has a single reported value with no observed variation across the dataset. Ozone is consistently 0.035 ppm (minimum, median and maximum all equal), while PM₂.5 is uniformly 8.0 µg/m³. The lack of spread indicates that only one measurement per pollutant is available, so typical or median values are identical to the sole recorded figure.
Overall, the coverage for Sault Ste Marie is very limited: just two rows covering two pollutants, both from the same site and both dated several years ago. Because the data set does not include recent or multiple observations, it cannot capture how air quality may change across different neighborhoods or times of day in the city.
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 Sault Ste. Marie includes six valid measurements and is updated within three days, with the latest values recorded at 2026‑02‑10T22:00:00+00:00. These figures represent a recent snapshot of ambient conditions; however, air quality can differ across neighborhoods and change throughout the day, so local variations may not be reflected in this summary.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| SAULT STE MARIE | o3 | 0.035 | ppm | 2018-10-13 21:00 UTC |
| SAULT STE MARIE | pm25 | 8.0 | µg/m³ | 2019-02-28 21:00 UTC |