Air quality in Saltillo, Coahuila, Mexico today
Mr. Duck’s Air Quality Score
Moderate air today for Saltillo, Coahuila, Mexico
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Saltillo, Coahuila is currently classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 10.38 and a PM10 reference value of 41.505, based on six valid observations collected via OpenAQ.
These figures reflect the present conditions without implying any trend or cause. 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 Saltillo air‑quality dataset contains a single monitoring row that reports seven pollutants: nitrogen monoxide (NO) at 0.00043221 ppm, nitrogen dioxide (NO₂) at 0.0087699 ppm, total nitrogen oxides (NOX) at 0.0092246 ppm, ozone (O₃) at 0.00020478 ppm, particulate matter ≤10 µm (PM10) at 41.505 µg/m³, particulate matter ≤2.5 µg/m³ (PM₂.5) at 10.38 µg/m³, and sulfur dioxide (SO₂) at 0.0051846 ppm. All values are sourced from the “Finanzas” station.
The most recent measurements for NO, NO₂, NOX, PM10, PM₂.5 and SO₂ were recorded on 2026‑02‑10 at 22:00 UTC, while O₃ is older, last updated on 2025‑08‑27 at 11:00 UTC. Because there is only one reporting row, the dataset does not provide a range of values across multiple locations or times; each pollutant shows a single reported figure that also serves as its minimum, median and maximum.
Two practical observations follow from these facts. First, the data are largely current, with six of the seven pollutants refreshed within the past week, indicating recent coverage for most key gases and particles. Second, ozone is an outlier in terms of freshness, being more than five months older than the other measurements, which means any assessment of O₃ trends would be limited. Overall, while the dataset offers a snapshot of several important air‑quality constituents for Saltillo, its single‑station scope and the dated ozone reading suggest that conditions can differ across the city and over time, and additional monitoring points would be needed for a fuller 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 Saltillo reflects six valid measurements and is 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 citywide air quality, but conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Finanzas | no | 0.00043221 | ppm | 2026-02-10 22:00 UTC |
| Finanzas | no2 | 0.0087699 | ppm | 2026-02-10 22:00 UTC |
| Finanzas | nox | 0.0092246 | ppm | 2026-02-10 22:00 UTC |
| Finanzas | o3 | 0.00020478 | ppm | 2025-08-27 11:00 UTC |
| Finanzas | pm10 | 41.505 | µg/m³ | 2026-02-10 22:00 UTC |
| Finanzas | pm25 | 10.38 | µg/m³ | 2026-02-10 22:00 UTC |
| Finanzas | so2 | 0.0051846 | ppm | 2026-02-10 22:00 UTC |