Worst air pollution Saguaro National Park - Tucson, today and tomorrow
Today (15 July): Air quality in Saguaro National Park 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: 27.1/100).
Tomorrow (16 July 2026): Air quality in Saguaro National Park is fair. PM10 decreases to good; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 27.5/100). 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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Saguaro National Park, situated at a Sonoran Desert park dense with towering saguaro cactus forest, sees the same seasonal air quality swings that shape the rest of Tucson. As with most sublevel sites, the broader city trend is the best guide to typical conditions here.
Today - 15 July | Pollution peaks at 11:00
AQI:
Fair
27.1/100
PM2.5 (fine particles):
Good
16.5/100
PM10 (coarse particles):
Fair
26.5/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
27.1/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
3.0/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 09:00
AQI:
Fair
27.5/100
PM2.5 (fine particles):
Good
9.8/100
PM10 (coarse particles):
Good
15.8/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
27.5/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
2.3/100
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Frequently Asked Questions
Is air quality bad in Saguaro National Park right now?
On 15 July 2026, overall air quality in Saguaro National Park is fair. AQI is the main air quality indicator at 27.1/100. Pollution peaks around 11:00 AM (O3: 27.1/100).
Will air quality be worse tomorrow in Saguaro National Park?
On 16 July 2026, air quality conditions in Saguaro National Park will be similar to today, with AQI forecast at fair at 27.5/100. Pollution peaks around 9:00 AM (O3: 27.5/100).
When is air pollution at its worst in Saguaro National Park?
Saguaro National Park experiences the same seasonal air quality swings as the rest of Tucson — the calmest, cleanest stretch usually falls between late autumn and early spring, whereas spring winds can kick up sudden dust storms that spike particulate levels sharply for a day or two. Monsoon storms in July and August can either clear the air with rain or stir up dust ahead of the storm front.
Are air quality levels in Saguaro National Park 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