Air quality in Heroica Nogales, Sonora, Mexico today
Mr. Duck’s Air Quality Score
Good air today for Heroica Nogales, Sonora, 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 Heroica Nogales is classified as Good today. The primary pollutant measured is PM2.5, fine particulate matter that is tracked alongside other size fractions.
Measurements from three valid monitoring stations show a PM2.5 reference value of 4.2 µg/m³ and a PM10 reference value of 23.0 µg/m³. These values reflect the current concentrations recorded by OpenAQ for this location. 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 Heroica Nogales includes three measured pollutants – ozone (O3), particulate matter up to 10 µm (PM10) and fine particulate matter up to 2.5 µm (PM2.5). All values come from a single monitoring location, identified as Nogales ITN, so the city’s air‑quality picture is based on one reporting site rather than a network of stations.
Each pollutant has a single recent observation recorded at 2026-02-10 22:00 UTC. The ozone reading is 0.04 ppm, PM10 registers 23.0 µg/m³ and PM2.5 shows 4.2 µg/m³. Because there is only one row per pollutant, the minimum, median and maximum values are identical for each metric, indicating no observed variation within the dataset. The reported percentiles (p10 and p90) match these same numbers, confirming that the data set does not capture a range of conditions over time.
The freshness of the data is consistent across all three pollutants: every measurement was updated within the last seven days, which meets the criteria for “recent” reporting on this platform. However, with only one station contributing, spatial coverage is limited; air‑quality can differ in other parts of Nogales depending on local sources and meteorology, but those variations are not reflected here. Consequently, while the available numbers give a snapshot of conditions at a specific time and place, they do not provide insight into daily fluctuations or broader city‑wide patterns.
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 reflects three valid measurements and is marked as Updated within 3 days, with the latest values recorded on 2026‑02‑10 at 22:00 UTC. This snapshot provides a brief overview of current conditions, but air quality 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 |
|---|---|---|---|---|
| Nogales ITN | o3 | 0.04 | ppm | 2026-02-10 22:00 UTC |
| Nogales ITN | pm10 | 23.0 | µg/m³ | 2026-02-10 22:00 UTC |
| Nogales ITN | pm25 | 4.2 | µg/m³ | 2026-02-10 22:00 UTC |