Air quality in Adjala–Tosorontio, Ontario, Canada today
Mr. Duck’s Air Quality Score
Unhealthy for sensitive groups for Adjala–Tosorontio, 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 Adjala‑Tosorontio is classified as USG. The primary pollutant identified is PM2.5 (fine particles). Measurements from five valid observations show a PM2.5 concentration of 43.4 µg/m³.
Data are shown via OpenAQ and reflect the current monitoring results for the area. 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 Adjala‑Tosorontio contains a single monitoring row, so each pollutant is represented by one measurement taken at the Lil Crest Hill site. The most recent reading for every parameter was recorded on 2026‑02‑10 at 22:00 UTC, meaning all data are fresh within the last three days.
Available pollutants include PM1 at 28.789 µg/m³, PM2.5 at 43.399 µg/m³, relative humidity at 41.827 %, temperature at 7.249 °C, and particle count (UM003) at 4 830 particles/cm³. Because there is only one row, the minimum, median and maximum values are identical for each pollutant, indicating no observed range within this dataset. The single‑station coverage means spatial variation across the municipality cannot be assessed from these figures alone.
Two practical observations follow from the numbers: first, the particulate matter concentrations (both PM1 and PM2.5) are captured at a level that does not vary over time in this snapshot, so any short‑term fluctuations would require additional stations or repeated measurements. Second, the environmental conditions recorded—moderate humidity around 42 % and a cool temperature near 7 °C—reflect the specific moment of sampling rather than a broader climate pattern for Adjala‑Tosorontio. Users should keep in mind that with only one reporting location, conditions elsewhere in the city may differ, and future updates will be needed to build a more complete picture.
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 Adjala‑Tosorontio is based on five valid measurements and was updated within three days, with the latest refresh recorded at 2026‑02‑10 22:00 UTC. This snapshot reflects conditions at the time of collection; air quality can vary across different neighbourhoods and times of day within the city, so actual exposure may differ from these values.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Lilac Hill | pm1 | 28.78900000254313 | µg/m³ | 2026-02-10 22:00 UTC |
| Lilac Hill | pm25 | 43.399167124430335 | µg/m³ | 2026-02-10 22:00 UTC |
| Lilac Hill | relativehumidity | 41.826666641235356 | % | 2026-02-10 22:00 UTC |
| Lilac Hill | temperature | 7.248833338419597 | c | 2026-02-10 22:00 UTC |
| Lilac Hill | um003 | 4829.608333333334 | particles/cm³ | 2026-02-10 22:00 UTC |