Worst air pollution Tucson, today and tomorrow
Today (15 July): Air quality in Tucson is fair. AQI, PM10, and O3 are fair; PM2.5, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 28.2/100).
Tomorrow (16 July 2026): Air quality in Tucson is fair. PM10 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 27.6/100). 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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Tucson's air quality is generally good, benefiting from the Sonoran Desert's dry climate and consistent southwesterly winds providing reasonable ventilation across the Santa Cruz Valley. The primary concerns are windblown desert dust contributing elevated PM10 during dry windy periods and summer monsoon ozone episodes, while the surrounding mountain ranges create topographic variation in local pollution exposure.
Today - 15 July | Pollution peaks at 11:00
AQI:
Fair
28.2/100
PM2.5 (fine particles):
Good
16.0/100
PM10 (coarse particles):
Fair
25.5/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
28.2/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
2.8/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 10:00
AQI:
Fair
27.6/100
PM2.5 (fine particles):
Good
10.0/100
PM10 (coarse particles):
Good
16.1/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
2.3/100
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Frequently Asked Questions
Is air quality bad in Tucson right now?
On 15 July 2026, overall air quality in Tucson is fair. AQI is the main air quality indicator at 28.2/100. Pollution peaks around 11:00 AM (O3: 28.2/100).
Will air quality be worse tomorrow in Tucson?
On 16 July 2026, air quality conditions in Tucson will be similar to today, with AQI forecast at fair at 27.6/100. Pollution peaks around 10:00 AM (O3: 27.6/100).
When is air pollution at its worst in Tucson?
Tucson experiences a distinct seasonal swing in air quality. In short, winter typically brings a welcome break from both heat-driven ozone and blowing dust, whereas spring winds can kick up sudden dust storms that spike particulate levels sharply for a day or two. Sudden haboob-style dust storms can appear with little warning during the spring wind season.
Are air quality levels in Tucson 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