Worst air pollution Twin Falls, today and tomorrow
Today (16 July): Air quality in Twin Falls is fair. PM2.5, PM10, and O3 are fair; AQI and NO2 are medium; SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 48.0/100).
Tomorrow (17 July 2026): Air quality in Twin Falls is fair. All pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 45.8/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Twin Falls' air quality reflects the Snake River Canyon's partial topographic enclosure in the Magic Valley of southern Idaho, with vehicle emissions from US-93 and surrounding agricultural operations — Twin Falls being a major dairy and potato farming hub — contributing elevated ammonia and agricultural dust alongside primary vehicle sources. Winter temperature inversions can trap emissions in the canyon, while summer wildfire smoke from surrounding Idaho forests is an increasingly severe seasonal concern.
Today - 16 July | Pollution peaks at 23:00
AQI:
Medium
48.0/100
PM2.5 (fine particles):
Fair
31.7/100
PM10 (coarse particles):
Fair
25.2/100
NO2 (nitrogen dioxide):
Medium
48.0/100
O3 (ozone):
Fair
36.3/100
SO2 (sulfur dioxide):
Good
9.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.8/100
PM1 (ultrafine particles):
Good
15.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Medium
45.8/100
PM2.5 (fine particles):
Fair
26.6/100
PM10 (coarse particles):
Fair
21.8/100
NO2 (nitrogen dioxide):
Medium
45.8/100
O3 (ozone):
Fair
38.8/100
SO2 (sulfur dioxide):
Good
12.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Good
16.3/100
Pollen forecast in Twin Falls
View pollen forecastFrequently Asked Questions
Is air quality bad in Twin Falls right now?
On 16 July 2026, overall air quality in Twin Falls is fair. O3 is the main pollutant at 36.3/100. Pollution peaks around 11:00 PM (NO2: 48.0/100).
Will air quality be worse tomorrow in Twin Falls?
On 17 July 2026, air quality conditions in Twin Falls will be similar to today, with O3 forecast at fair at 38.8/100. Pollution peaks around 12:00 AM (NO2: 45.8/100).
When is air pollution at its worst in Twin Falls?
Air quality in Twin Falls shifts across the year. In short, a brief window in autumn tends to bring the year's best air, before winter inversions set in, whereas valley and basin locations can see pollution trapped under cold air for days during winter inversions. Valley and basin locations are especially prone to these winter inversion episodes compared to more exposed, higher terrain.
Are air quality levels in Twin Falls 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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