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Winter Air Quality Update & Forecast
Tuesday, November 25, 2014 11:50 AM

Locations and Air Quality Conditions


Current Situation Forecast
The unsettled weather continues to keep air quality GOOD in most locations today. Libby is the only exception again; with air quality currently at MODERATE levels. The wet disturbance causing rain and snow throughout western Montana today will continue to impact the area through Wednesday evening. Overall, these unsettled conditions should help keep air quality GOOD at most locations. However, we may start to see some intermittent impacts in areas with low clouds and misty conditions. MODERATE wood stove smoke impacts are likely to continue in northwest Montana, where winds speeds are lower than elsewhere in the state. More widespread air quality impacts may return on Thursday when a ridge of high pressure moves over the area. These impacts will likely be short lived as another storm is possible over the weekend.

Kristen Martin
State Air Quality Meteorologist
Air Resource Management Bureau
Montana Department of Environmental Quality
Phone: (406) 444-0283
Email: kmartin@mt.gov




Webcams across western Montana this morning are showing damp, cloudy conditions as a weather disturbance brings rain and snow to the area. 

Webcams across western Montana this morning are showing damp, cloudy conditions as a weather disturbance brings rain and snow to the area.
Source: Explore Whitefish


 
Widespread cloud cover is impacting the state this morning.

Widespread cloud cover is impacting the state this morning.
Source: NWS

Ventilation is good for most areas of western Montana this morning.

Ventilation is good for most areas of western Montana this morning.

Source: University of Washington 

The unsettled weather continues today in western and central Montana.

The unsettled weather continues today in western and central Montana.
Source: NWS

Real time particulate information is currently available in most of the larger urban areas from MDEQ's Today's Air website.

Today's particulate report below compares particulate levels received from DEQ's
reporting stations with MDEQ’s wildfire health advisory levels.

Locations and severity of PM 2.5 particulate values since midnight of the date above.
Health Effects Categories City
  Hazardous  
  Very Unhealthy  
  Unhealthy  
  Unhealthy for Sensitive Groups  
  Moderate

 Libby 

  Good

 All other reporting sites 

B1(x) One-hour BAM value (number of values)
B8(x) Eight-hour average BAM
B24 24 hour  average BAM value