Worst air pollution Twin Falls, today and tomorrow
Today (9 August): Air quality in Twin Falls is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 40.2/100).
Tomorrow (10 August 2026): Air quality in Twin Falls is fair. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 54.2/100). 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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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 - 9 August | Pollution peaks at 00:00
AQI:
Medium
40.2/100
PM2.5 (fine particles):
Good
17.8/100
PM10 (coarse particles):
Good
12.3/100
NO2 (nitrogen dioxide):
Medium
40.2/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
5.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
12.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Medium
54.2/100
PM2.5 (fine particles):
Fair
21.8/100
PM10 (coarse particles):
Good
12.8/100
NO2 (nitrogen dioxide):
Medium
54.2/100
O3 (ozone):
Fair
33.4/100
SO2 (sulfur dioxide):
Good
7.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.8/100
PM1 (ultrafine particles):
Good
14.3/100
Pollen forecast in Twin Falls
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Twin Falls
Frequently Asked Questions
Is air quality bad in Twin Falls right now?
On 9 August 2026, overall air quality in Twin Falls is fair. O3 is the main pollutant at 34.0/100. Pollution peaks around 12:00 AM (NO2: 40.2/100).
Will air quality be worse tomorrow in Twin Falls?
On 10 August 2026, air quality conditions in Twin Falls will be similar to today, with O3 forecast at fair at 33.4/100. Pollution peaks around 11:00 PM (NO2: 54.2/100).
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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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