Worst air pollution Heroica Guaymas, today and tomorrow
Today (15 July): Air quality in Heroica Guaymas 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 3:00 PM (PM10: 71.9/100).
Tomorrow (16 July 2026): Air quality in Heroica Guaymas is very poor. AQI worsens to very poor; PM10 increases to very poor; all other pollutants stay as today. Pollution peaks around 4:00 AM (PM10: 94.0/100). 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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Heroica Guaymas reflects the flat Sonoran Desert Gulf of California coastal position in Guaymas, with vehicle traffic on surrounding roads and the fishing port, industrial, and automotive manufacturing corridor contributing local sources. Consistent Gulf of California and Pacific breezes provide maritime ventilation, while the outstanding dual-coast maritime exposure generally maintains the area among northwestern Mexico's more moderately ventilated coastal industrial port cities throughout most of the year.
Today - 15 July | Pollution peaks at 15:00
AQI:
Poor
71.9/100
PM2.5 (fine particles):
Medium
51.5/100
PM10 (coarse particles):
Poor
71.9/100
NO2 (nitrogen dioxide):
Good
0.7/100
O3 (ozone):
Fair
37.5/100
SO2 (sulfur dioxide):
Good
13.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
10.7/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 04:00
AQI:
Very poor
94.0/100
PM2.5 (fine particles):
Medium
55.6/100
PM10 (coarse particles):
Very poor
94.0/100
NO2 (nitrogen dioxide):
Good
0.8/100
O3 (ozone):
Fair
31.5/100
SO2 (sulfur dioxide):
Good
6.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
12.6/100
Frequently Asked Questions
Is air quality bad in Heroica Guaymas right now?
On 15 July 2026, overall air quality in Heroica Guaymas is poor. AQI is the main air quality indicator at 71.9/100. Pollution peaks around 3:00 PM (PM10: 71.9/100).
Will air quality be worse tomorrow in Heroica Guaymas?
On 16 July 2026, air quality conditions in Heroica Guaymas will be worse than today, with AQI forecast at very poor at 94.0/100. Pollution peaks around 4:00 AM (PM10: 94.0/100).
When is air pollution at its worst in Heroica Guaymas?
In Heroica Guaymas, traffic on the surrounding roads, textile and manufacturing operations, along with harbour and shipping traffic are the main local sources, with conditions worsening when windblown dust events occur. Dust carried on these winds adds substantially to particulate levels. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Heroica Guaymas 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app