The highest AQ index in Idaho (as of 15:00 PDT) is currently the Grangeville area. Particle Pollution (PM2.5) is measuring at 151 (Unhealthy). This means some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects.
Over the next few days, the highest Particle Pollution (PM2.5) will be in the Porthill (seasonal) area. It is forecasted to be Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Afternoon and evening mountain thunderstorm threat continues for Monday with smaller area coverage. Temperatures trend warmer. A drier airmass moves in by the middle of next week. A pattern change at the end of the week will bring cooler, breezy conditions. Air Quality is expected to be mostly in the MODERATE category this week.
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 13 minutes ago
Below is a list of counties in Idaho. Click on any county below and you'll get a list of cities where we provide AQ index forecasts.