Worst air pollution Boise, today and tomorrow
Today (16 July): Air quality in Boise is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 32.0/100).
Tomorrow (17 July 2026): Air quality in Boise is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 6:00 AM (O3: 29.1/100). 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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Boise's air quality reflects the Treasure Valley's partial topographic enclosure between the Owyhee Mountains to the south and the Boise Foothills to the north, with vehicle emissions from I-84 and residential wood burning contributing the primary local sources. Winter temperature inversions can trap emissions in the valley for extended periods, while summer wildfire smoke from the surrounding Idaho and Oregon forests has become an increasingly severe recurring concern.
Today - 16 July | Pollution peaks at 08:00
AQI:
Fair
32.0/100
PM2.5 (fine particles):
Good
12.2/100
PM10 (coarse particles):
Good
7.8/100
NO2 (nitrogen dioxide):
Good
15.9/100
O3 (ozone):
Fair
32.0/100
SO2 (sulfur dioxide):
Good
3.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
8.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 06:00
AQI:
Fair
29.1/100
PM2.5 (fine particles):
Good
10.4/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Fair
22.5/100
O3 (ozone):
Fair
29.1/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
7.5/100
Pollen forecast in Boise
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Boise
Frequently Asked Questions
Is air quality bad in Boise right now?
On 16 July 2026, overall air quality in Boise is fair. AQI is the main air quality indicator at 32.0/100. Pollution peaks around 8:00 AM (O3: 32.0/100).
Will air quality be worse tomorrow in Boise?
On 17 July 2026, air quality conditions in Boise will be similar to today, with AQI forecast at fair at 29.1/100. Pollution peaks around 6:00 AM (O3: 29.1/100).
When is air pollution at its worst in Boise?
Conditions in Boise vary noticeably across the seasons. Typically, a brief window in autumn tends to bring the year's best air, before winter inversions set in, while summer brings regional wildfire smoke, while winter brings its own inversion-driven pollution episodes. Valley and basin locations are especially prone to these winter inversion episodes compared to more exposed, higher terrain.
Are air quality levels in Boise 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