Worst air pollution Cadereyta Jiménez, today and tomorrow
Today (9 August): Air quality in Cadereyta Jiménez is poor. AQI and PM10 are poor; O3 is fair; PM2.5 is medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (PM10: 71.0/100).
Tomorrow (10 August 2026): Air quality in Cadereyta Jiménez is poor. All pollutants stay as today. Pollution peaks around 11:00 PM (PM10: 78.2/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Cadereyta Jiménez's air quality reflects the greater Monterrey metropolitan area's eastern industrial corridor in the Sierra Madre Oriental basin adjacent to the PEMEX Cadereyta refinery, with vehicle traffic on surrounding roads and the petroleum refinery generating elevated industrial SO₂ and VOCs alongside vehicle sources. The extraordinary mountain enclosure creates severe winter inversions, while the PEMEX refinery's industrial scale and the Monterrey metropolitan industrial background make Cadereyta Mexico's most distinctively petroleum refinery-defined mountain basin urban environment.
Today - 9 August | Pollution peaks at 04:00
AQI:
Poor
71.0/100
PM2.5 (fine particles):
Medium
50.7/100
PM10 (coarse particles):
Poor
71.0/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
29.2/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
8.9/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Poor
78.2/100
PM2.5 (fine particles):
Medium
56.6/100
PM10 (coarse particles):
Poor
78.2/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
30.4/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
15.0/100
Frequently Asked Questions
Is air quality bad in Cadereyta Jiménez right now?
On 9 August 2026, overall air quality in Cadereyta Jiménez is poor. AQI is the main air quality indicator at 71.0/100. Pollution peaks around 4:00 AM (PM10: 71.0/100).
Will air quality be worse tomorrow in Cadereyta Jiménez?
On 10 August 2026, air quality conditions in Cadereyta Jiménez will be similar to today, with AQI forecast at poor at 78.2/100. Pollution peaks around 11:00 PM (PM10: 78.2/100).
When is air pollution at its worst in Cadereyta Jiménez?
Cadereyta Jiménez usually sees its poorest air quality when road traffic and heavy industry such as steel, cement, or petrochemical processing coincide with periods when the surrounding valley traps air close to the ground. The bowl-like terrain here limits how quickly pollutants can escape. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher.
Are air quality levels in Cadereyta Jiménez based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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