Pocatello Air Quality Forecast - Today, Tomorrow
Air Quality Today
Today (10 October): Air quality in Pocatello is moderate. AQI and NO2 are moderate; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (NO2: 42.2/100).
Air Quality Tomorrow
Tomorrow (11 October 2026): Air quality in Pocatello is fair. AQI improves to fair; NO2 decreases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (NO2: 38.9/100).
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Air Quality
Today - 10 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Moderate | 42.2/100 |
| PM2.5 (fine particles) | Good | 12.2/100 |
| PM10 (coarse particles) | Good | 4.4/100 |
| NO2 (nitrogen dioxide) | Moderate | 42.2/100 |
| O3 (ozone) | Good | 17.1/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 1.2/100 |
| PM1 (ultrafine particles) | Good | 2.4/100 |
Tomorrow - 11 October
| Pollutant | Level | Value |
|---|---|---|
| AQI | Fair | 38.9/100 |
| PM2.5 (fine particles) | Good | 11.5/100 |
| PM10 (coarse particles) | Good | 5.3/100 |
| NO2 (nitrogen dioxide) | Fair | 38.9/100 |
| O3 (ozone) | Fair | 21.6/100 |
| SO2 (sulfur dioxide) | Good | 0.3/100 |
| CO (carbon monoxide) | Good | 0.5/100 |
| HCHO (formaldehyde) | Good | 1.3/100 |
| PM1 (ultrafine particles) | Good | 1.8/100 |
Local Environmental Conditions
Around the center of Pocatello, dense development means road traffic is the main local source of nitrogen dioxide and fine particles. Lying in a valley and ringed by mountains, the area is prone to temperature inversions that hold pollutants near the ground when winds drop. Local sources include traffic on I-15 and industry. Home heating, especially wood stoves and fireplaces, adds smoke and fine particles in the colder months.
Summer sun from July to August cooks traffic fumes into ozone, especially in the warmest month, which averages 25°C. From November to April, inversions at around -4°C often hold a winter haze of smoke and particles over the valley. From June to September, hot, dry weather raises the risk of wildfires, and their smoke can drift over the area.
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Frequently Asked Questions About Air Quality in Idaho
Is air quality bad in Pocatello right now?
On 10 October 2026, overall air quality in Pocatello is moderate. AQI is the main air quality indicator at 42.2/100. Pollution peaks around 4:00 PM (NO2: 42.2/100).
Will air quality be worse tomorrow in Pocatello?
On 11 October 2026, air quality conditions in Pocatello will be better than today, with AQI forecast at fair at 38.9/100. Pollution peaks around 3:00 PM (NO2: 38.9/100).
When is air pollution at its worst in Pocatello?
Summer sun from July to August cooks traffic fumes into ozone, especially in the warmest month, which averages 25°C. From November to April, inversions at around -4°C often hold a winter haze of smoke and particles over the valley. From June to September, hot, dry weather raises the risk of wildfires, and their smoke can drift over the area.
Are air quality levels in Pocatello 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.
Understanding the Scale
The 0–100 air quality scores represent risk levels, not direct air pollutant concentrations. Higher scores indicate higher risk.
Air Quality
| Good | 0-20 | Low air quality risk. Air quality is expected to be good, with low levels of pollution. |
| Fair | 20-40 | Generally low air quality risk. Air quality is expected to be acceptable, with some pollution present. |
| Moderate | 40-60 | Moderate air quality risk. Air pollution is elevated and air quality may be less favorable. |
| Poor | 60-80 | High air quality risk. Air pollution is high and air quality is expected to be poor. |
| Very Poor | 80-100 | Very high air quality risk. Air pollution is very high and air quality is expected to be very poor. |