AQ Index for West Union, Illinois

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Current AQ Index in West Union

West Union Air Pollutants

Primary air pollutant in the West Union area:

PM2.5 - 24 Good

Enjoy your outdoor activities.

Other Pollutants:

OZONE - 19 Good

Daily Air Quality Forecast for West Union, Illinois

Weather Forecast Discussion 12Z surface analysis shows an exiting low pressure system and high pressure building in from the west. It will be cloudy most of today and the area could see some lingering showers. By this weekend, the high envelops the area over the southeast states. Then another low pressure system from out west approaches the area, lifts a warm front through the area early Monday and then a cold front later in the day. Temperatures will be steadily increasing through this period from the lower 40’s today to 50’s-low 60’s by Monday. Winds will gust 20 to 30 mph and then dimmish by this weekend. At 500mb we see the strongest winds over the area and then moving along down south across the Carolinas and then out to sea. The jet steadily decreases after that and then becomes almost zonal over the weekend. By Monday we should have a tame jet of 50-70 kt oriented west to east across the country. Temperatures at 850 mb are -2C, then warm to 3C, 24 to 36 hr later. By Sunday afternoon it will be up to 7C and Monday 10C before the next cold front moves through late. As for 700 mb vorticity, this morning shows a large vorticity maximum centered over New York state. With time this feature begins to erode and eventually moves out over the water by 24 hours later. In the meantime, there is some weak ridging over the area while out west tried to develop another vorticity maximum. Eventually by Monday afternoon a trough will be to the west of the area (around 18Z) and this feature will move through in less than 24 hours. Generally used a blend of the EURO/GFS and partly the NAM for the beginning of the period. Air Quality model analysis and decision  Fine Particulate: The Firework smoke model shows nothing but a few faint plumes across a few parts of the country, most notably across the northeast and Mid-west states, including Indiana. There will be no impact on the Hoosier state. The Canadian model is going with a mixture of Good/Moderate through the period. (Mostly Moderate toward the end of the period.) The 06Z NOAA Model is going Good for the first two days of the period and then Moderate on Sunday, which based on the warmer sunny forecast is not out of the realm. (This is for both sites.) There is some consensus between the two models, so going with Good for today and tomorrow and then Moderate the rest of the period.

Primary Pollutant: PM2.5 - 0 Good

Primary Pollutant: PM2.5 - 0 Good

Primary Pollutant: PM2.5 - 0 Moderate

Primary Pollutant: PM2.5 - 0 Moderate