Idaho Smoke Map

Idaho Smoke Map Legend

**(Preliminary Data Warning: Data found on the map shown below is preliminary and is subject to change. Data is in local standard time format - no adjustment for daylight savings time.

Thursday, October 1, 2020

Hazy conditions expected

Air quality is forecast to be in the good to moderate category today across the state.

California smoke should begin to come in tomorrow morning along the OR/WA/ID border and track to the south-southeast expanding over the Lower and Middle Snake River Plain. Haze will reach the NV/ID/UT border by around 3pm tomorrow. 

Smoke impacts are expected to be limited to areas near any local fires. Generally hazy conditions should be expected across the southwest and portions of central Idaho today and expanding in coverage tomorrow morning and afternoon.

06Z HRRR-Smoke Vertically Integrated Smoke: Smoke will track north along the Pacific Coast before tracking east into central Idaho and then dropping south into southern Idaho tomorrow.  This smoke is expected to stay aloft. 

Wednesday, September 30, 2020

Minimal impacts with hazy conditions

Yesterday’s 24hr AQI data indicated good to moderate air quality across the state. Air quality forecasts for today are in the good category. 

Once again, we're lucky to not have any regional smoke for most of the day. Smoke from California fires will track north over the Pacific Ocean before turning east late this evening and into tomorrow. Smoke impacts are expected to be limited to areas near any local fires. In addition, there may be limited surface smoke in the Lower Treasure Valley this afternoon that will rise up during the afternoon and settle down in the evening. Generally hazy conditions with smoke aloft should be expected across the southwest and portions of central Idaho.
 

RAP-Smoke 12Z Vertically Integrated Smoke: Smoke will track north along the Pacific Coast with light smoke over the Lower Treasure Valley.
  

Tuesday, September 29, 2020

Another clear day

Once again, the skies are looking clear for today. Air quality is forecast to be in the good category across the state today. 

Regional smoke is expected to stay out of Idaho while there may be some local smoke impacts from Idaho fires. These conditions look to persist through at least tomorrow morning. After that, upper level smoke is expected to enter central Idaho tomorrow morning but it looks to stay aloft. Beginning around 6pm MDT tomorrow, this lofted smoke will settle at the surface starting in Idaho County and tracking south to the fringes of the Snake River Plain.

HRRR-Smoke 06Z Vertically Integrated Smoke: Smoke will track north along the Pacific Coast before curling into central Idaho tomorrow morning.  This smoke is not expected to reach the surface and should stay aloft through the day tomorrow.


Monday, September 28, 2020

Clear day ahead

 Air quality is forecast to be good to moderate across the state today.

The air should be clear today aside from areas near local fires. These conditions will continue through at least tomorrow. Late Tuesday night and early Wednesday morning could bring a change in wind direction and also bring smoke towards Idaho.

US EPA Airnow Real-Time Nowcast Map: Good air quality nowcasts are evident across the state of Idaho as well as the entire Pacific Northwest.  



Friday, September 25, 2020

Weekend looking pretty good!

Light smoke from California is expected to arrive in southwest Idaho by late morning and quickly spread across most of south Idaho this afternoon. Impacts should be short lived as a cold front coming through this evening will clear the air from west to east through the night. 

By Saturday morning, all areas should be free of smoke impacts with the exception of potential impacts near local fires, particularly the Woodhead fire in Washington County. Northwest flow will keep the state clear of regional smoke through the rest of the weekend.


HRRR-Smoke Experimental 00z near surface smoke model showing a final surge of California smoke entering Idaho Friday morning before clearing out by Saturday morning. Most areas should be smoke free through the remainder of the weekend.

Thursday, September 24, 2020

Clearing out tonight and tomorrow morning

Air quality is forecast to be in the good to moderate category across the state today.

Smoke from north Idaho has cleared but south Idaho can expect more smoke today coming in from California. This smoke will traverse the Snake River Plain throughout the day and leaves the state to the east last this evening and early tomorrow morning.

Conditions are expected to be clear across the state tomorrow!

HRRR-Smoke 00z-Near Surface Smoke model: Indicates smoke entering south Idaho from Nevada and Oregon before tracking east and exiting the state late tonight.  Periods of moderate smoke are expected throughout the day across southern Idaho.


Wednesday, September 23, 2020

Waves of smoke throughout the day

Air quality was in the good to moderate range yesterday and today's 24 hour AQI is forecast to be good to moderate.

Pulses of smoke from California will continue to move into the state today interspersed with periods of clearing. This smoke is expected to continue to track north into the Central Idaho Mountains throughout the afternoon with a stronger secondary surge of smoke expected to reach the Idaho-Nevada border by around 2am tomorrow and reach the Snake River Plain by 7am tomorrow morning. 

Continued smoke impacts are expected across central Idaho today with increased impacts tonight around 10pm across that area, up to as far north as Clearwater County.  Beginning by 2am tomorrow morning, a strong frontal passage will clear smoke from northern and central Idaho through at least tomorrow.  Higher smoke impacts will be likely in the vicinity of local fires as well as in the morning and evening hours. 

HRRR-Smoke 00z-Near Surface Smoke model: Indicates smoke entering south Idaho from Nevada while a smoke plume is visible on the Woodhead fire in Washington County.  Periods of moderate smoke are expected throughout the day and into tomorrow before a strong clearing event develops.


Tuesday, September 22, 2020

Not too shabby out there

Air quality was good to moderate yesterday across the state and is forecast to be in the same range today. The smoke from California that moved into southern Idaho yesterday mostly remained aloft and little air quality degradation was noted at the surface. Waves of light to moderate smoke from California and Oregon look to continue moving into the state today. Again, how much of this smoke remains aloft and how much mixes down to the surface is an open question but at least widespread haze should be expected. Higher smoke impacts will be likely in the vicinity of local fires. 

NOAA-20 VIIRS visible “true color” satellite imagery from 9/22/20 showing light smoke entering south Idaho from Nevada while a smoke plume is visible on the Woodhead fire in Washington County. 


Monday, September 21, 2020

Smoke should be arriving later today

We hope everyone was able to enjoy some blue skies and clear air this weekend! Unfortunately, that will come to an end today as southwest flow returns. Smoke from California wildfires should begin arriving in southern Idaho later this morning and will spread northeastward across all but the Panhandle by this evening. It is still unclear how much of this smoke will actually mix down to the surface but some air quality degradation is expected across most of the state overnight into Tuesday morning as the smoke settles in after sunset. Widespread haze with smoke aloft is likely this afternoon.

Heavier impacts could occur in the vicinity of numerous wildfires burning in Idaho, particularly the Woodhead fire in Washington County. The only area expected to avoid smoke impacts today into tonight will be the Panhandle. 


HRRR-Smoke experimental 12Z run modeled vertically-integrated smoke concentrations valid at 4:00 PM MDT on Monday 9/21/20 showing moderate to heavy smoke over all of Idaho except the Panhandle. Most of this smoke is currently elevated but may settle down to the surface tonight.

Air Pollution Forecast and Caution Lifted for all of Idaho

 The Idaho Department of Environmental Quality (DEQ) has lifted the Air Pollution Forecast and Caution for all counties in Idaho.