Worst air pollution La Trinidad, today and tomorrow
Today (20 September): Air quality in La Trinidad is very poor. AQI and PM10 are very poor; PM2.5 is moderate; PM1 is fair; NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 6:00 AM (PM10: 100/100).
Tomorrow (21 September 2026): Air quality in La Trinidad is moderate. AQI improves to moderate; PM2.5 decreases to fair; PM10 decreases to moderate; all other pollutants stay as today. Pollution peaks around 11:00 AM (PM10: 48.4/100). 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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La Trinidad in Chiapas reflects the Chiapas highland agricultural corridor position, with vehicle traffic on surrounding roads and indigenous agricultural operations contributing very modest local sources. The tropical highland climate's frequent rain provides effective atmospheric cleansing, while the surrounding mountain ranges create topographic variation and the relatively low industrial density generally maintains good to moderate conditions throughout most of the year.
Today - 20 September | Pollution peaks at 06:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Moderate
59.9/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
6.0/100
O3 (ozone):
Good
16.4/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.5/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Fair
27.8/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 11:00
AQI:
Moderate
48.4/100
PM2.5 (fine particles):
Fair
39.1/100
PM10 (coarse particles):
Moderate
48.4/100
NO2 (nitrogen dioxide):
Good
7.0/100
O3 (ozone):
Good
19.3/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.6/100
PM1 (ultrafine particles):
Fair
21.0/100
Frequently Asked Questions
Is air quality bad in La Trinidad right now?
On 20 September 2026, overall air quality in La Trinidad is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 6:00 AM (PM10: 100/100).
Will air quality be worse tomorrow in La Trinidad?
On 21 September 2026, air quality conditions in La Trinidad will be better than today, with AQI forecast at moderate at 48.4/100. Pollution peaks around 11:00 AM (PM10: 48.4/100).
When is air pollution at its worst in La Trinidad?
Air quality in La Trinidad tends to be worse when road traffic together with agricultural activity build up and dry, windy weather picks up. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. These episodes tend to cluster in spring and autumn.
Are air quality levels in La Trinidad 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: 21 September 2026 at 03:04 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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