Air quality in Mississippi Mills, Ontario, Canada today
Mr. Duck’s Air Quality Score
Moderate air today for Mississippi Mills, 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 in Mississippi Mills today is classified as Moderate. The primary pollutant identified is PM2.5, with a measured concentration of 11.21 µg/m³ based on four valid observations from OpenAQ data.
These measurements indicate that fine particulate levels are currently at the reported value, while no PM10 figure 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
Mississippi Mills’ OpenAQ feed currently contains data from a single monitoring location on Green Acres Rd, so the city’s air‑quality picture is based on one row of measurements. The dataset includes six pollutants: PM1, PM10, PM2.5, relative humidity, temperature and particle count (UM003). Freshness varies by pollutant; the most recent readings for PM1, PM2.5, relative humidity, temperature and UM003 were all recorded on 2026‑02‑10 at 22:00 UTC, while the PM10 value dates back to 2025‑01‑13 at 23:00 UTC, making it over a year older than the other parameters.
All six variables show identical single‑value statistics because only one observation is available. The measured concentrations are 6.95 µg/m³ for PM1, 6.65 µg/m³ for PM10 and 11.21 µg/m³ for PM2.5. Relative humidity stands at 55 %, temperature is just below zero at –0.62 °C, and the particle counter registers 1003.37 particles per cm³. Because each pollutant has a single recorded value, the minimum, median and maximum are the same, and there is no spread to describe variability.
The dataset’s limited coverage means that city‑wide conditions may differ across neighborhoods or times of day, especially given the outdated PM10 reading. Users should keep in mind that the current snapshot reflects only one site and a narrow time window, so additional monitoring points would be needed for a fuller picture of air quality throughout Mississippi Mills.
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 snapshot for Mississippi Mills is based on four valid measurements and was refreshed recently, Updated within 3 days; the data were last updated at 2026‑02‑10T22:00:00+00:00. This information reflects conditions measured at specific monitoring points and times, so air quality can vary across different locations and moments within the city.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Green Acres Rd | pm1 | 6.949333318074544 | µg/m³ | 2026-02-10 22:00 UTC |
| Green Acres Rd | pm10 | 6.654666701952617 | µg/m³ | 2025-01-13 23:00 UTC |
| Green Acres Rd | pm25 | 11.208333333333334 | µg/m³ | 2026-02-10 22:00 UTC |
| Green Acres Rd | relativehumidity | 54.996500269571946 | % | 2026-02-10 22:00 UTC |
| Green Acres Rd | um003 | 1003.3666666666667 | particles/cm³ | 2026-02-10 22:00 UTC |