Worst air pollution Hermosillo, today and tomorrow
Today (15 July): Air quality in Hermosillo is fair. O3 is fair; AQI, PM2.5, and PM10 are medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (PM10: 49.8/100).
Tomorrow (16 July 2026): Air quality in Hermosillo is fair. All pollutants stay as today. Pollution peaks around 11:00 AM (PM10: 50.3/100). 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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Hermosillo's air quality reflects the flat Sonoran Desert plain at 215 metres, with vehicle traffic on surrounding roads and the maquiladora manufacturing, mining, and agricultural corridor contributing local sources. Windblown Sonoran Desert dust contributes elevated PM10 during dry dust storm events, while the flat semi-arid terrain generally allows reasonable dispersal and Hermosillo generally maintains moderate to good northwestern Mexican desert city readings throughout most of the year.
Today - 15 July | Pollution peaks at 11:00
AQI:
Medium
49.8/100
PM2.5 (fine particles):
Medium
43.6/100
PM10 (coarse particles):
Medium
49.8/100
NO2 (nitrogen dioxide):
Good
1.0/100
O3 (ozone):
Fair
37.8/100
SO2 (sulfur dioxide):
Good
3.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
6.7/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 11:00
AQI:
Medium
50.3/100
PM2.5 (fine particles):
Medium
43.1/100
PM10 (coarse particles):
Medium
50.3/100
NO2 (nitrogen dioxide):
Good
1.1/100
O3 (ozone):
Fair
31.1/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.2/100
PM1 (ultrafine particles):
Good
7.2/100
Frequently Asked Questions
Is air quality bad in Hermosillo right now?
On 15 July 2026, overall air quality in Hermosillo is fair. O3 is the main pollutant at 37.8/100. Pollution peaks around 11:00 AM (PM10: 49.8/100).
Will air quality be worse tomorrow in Hermosillo?
On 16 July 2026, air quality conditions in Hermosillo will be similar to today, with O3 forecast at fair at 31.1/100. Pollution peaks around 11:00 AM (PM10: 50.3/100).
When is air pollution at its worst in Hermosillo?
The biggest local contributors to pollution in Hermosillo are traffic on the surrounding roads, quarrying activity, together with light manufacturing, particularly once dry, windy weather picks up. Dust carried on these winds adds substantially to particulate levels. These episodes tend to cluster in spring and autumn.
Are air quality levels in Hermosillo 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