Wisconsin air quality

Ashwaubenon, Wisconsin Air Quality

Brown County44.482, -88.070

The nearest monitor to Ashwaubenon, at Green Bay UW, 9 miles away, measured an index of 21 at Sun, 1:00 PM CDT, which is Good for ground-level ozone. Wisconsin Dept. of Natural Resources forecasts Good for Green Bay and Fox Cities today and Good tomorrow.

Measured now
21 · Good
Today
— · Good
Tomorrow
— · Good
Pollutant
Ozone

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Ashwaubenon, Wisconsin. Open it for the live map, where it pans and zooms.

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Ashwaubenon, Wisconsin Open the live map with the particulate forecast

Map layer from NOAA National Air Quality Forecast Capability. Boundaries from the Iowa Environmental Mesonet.

Alerts in force

An Air Quality Alert is issued by the National Weather Service on behalf of a state or local agency when pollution is expected to reach a level that harms health. An Air Stagnation Advisory means the air will not move enough to clear what is already in it.

None are in force near Ashwaubenon right now. All Wisconsin warnings.

Now

Good

Nearest monitor
Green Bay UW, 9 miles away (site 550090026)
Index measured
21 · Good
Measured at
Sun, 1:00 PM CDT
Ozone
22 ppb
Reporting area
Green Bay and Fox Cities, WI, 20 miles away
Reported by
Wisconsin Dept. of Natural Resources
Area index
21 · Good

Measured, not modeled. AirNow observations are preliminary until the operating agency certifies them, which happens months later.

Today and tomorrow

Wisconsin Dept. of Natural Resources's own forecast for Green Bay and Fox Cities, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGoodOzone
TomorrowGoodOzone

Hour by hour

NOAA’s National Air Quality Forecast Capability, bias-corrected against monitors, for this town’s own coordinate. The worst hour ahead is an index of 29, Good, around Sun, 6:00 PM CDT, from the run issued Sun, 7:00 AM CDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Sun, 9:00 AM CDT27Good5
Sun, 10:00 AM CDT25Good4.1
Sun, 11:00 AM CDT23Good3.7
Sun, 12:00 PM CDT19Good2.9
Sun, 1:00 PM CDT18Good3
Sun, 2:00 PM CDT15Good2.4
Sun, 3:00 PM CDT26Good2.228.3
Sun, 4:00 PM CDT27Good2.829.5
Sun, 5:00 PM CDT28Good3.430.9
Sun, 6:00 PM CDT29Good1.631.6
Sun, 7:00 PM CDT29Good0.831.2
Sun, 8:00 PM CDT28Good0.830.8
Sun, 9:00 PM CDT27Good0.729.4
Sun, 10:00 PM CDT26Good0.728.1
Sun, 11:00 PM CDT24Good0.726.8
Mon, 12:00 AM CDT23Good0.225.1
Mon, 1:00 AM CDT21Good0.623.3
Mon, 2:00 AM CDT19Good0.321.7
Mon, 3:00 AM CDT19Good0.521
Mon, 4:00 AM CDT19Good1.320.6
Mon, 5:00 AM CDT19Good0.620.9
Mon, 6:00 AM CDT19Good0.621.7
Mon, 7:00 AM CDT20Good0.622.3
Mon, 8:00 AM CDT20Good1.822.4
Mon, 9:00 AM CDT20Good1.222.5
Mon, 10:00 AM CDT21Good123.1
Mon, 11:00 AM CDT21Good1.723.6
Mon, 12:00 PM CDT22Good1.124.1
Mon, 1:00 PM CDT22Good0.624.7
Mon, 2:00 PM CDT23Good0.325.3
Mon, 3:00 PM CDT24Good0.526.2
Mon, 4:00 PM CDT25Good0.527.4
Mon, 5:00 PM CDT27Good0.529.1
Mon, 6:00 PM CDT28Good0.630.2
Mon, 7:00 PM CDT28Good0.730.7
Mon, 8:00 PM CDT27Good0.729.9
Mon, 9:00 PM CDT26Good0.628.8
Mon, 10:00 PM CDT25Good0.527.1
Mon, 11:00 PM CDT23Good0.525.5
Tue, 12:00 AM CDT22Good0.424.4
Tue, 1:00 AM CDT21Good0.423.2
Tue, 2:00 AM CDT19Good0.222
Tue, 3:00 AM CDT19Good0.121.4
Tue, 4:00 AM CDT19Good0.321.8
Tue, 5:00 AM CDT20Good0.322.5
Tue, 6:00 AM CDT21Good0.523.9
Tue, 7:00 AM CDT22Good224.8
Tue, 8:00 AM CDT23Good2.525.1
Tue, 9:00 AM CDT23Good1.425.4
Tue, 10:00 AM CDT24Good0.226.1
Tue, 11:00 AM CDT24Good0.626.5
Tue, 12:00 PM CDT24Good0.226.8
Tue, 1:00 PM CDT25Good0.627.3
Tue, 2:00 PM CDT25Good0.327.5
Tue, 3:00 PM CDT25Good0.627.8
Tue, 4:00 PM CDT26Good0.528.3
Tue, 5:00 PM CDT26Good0.228.6
Tue, 6:00 PM CDT26Good0.228.1
Tue, 7:00 PM CDT25Good0.527
Tue, 8:00 PM CDT23Good0.525.5
Tue, 9:00 PM CDT21Good0.523.6
Tue, 10:00 PM CDT19Good0.521.5
Tue, 11:00 PM CDT18Good0.319.6
Wed, 12:00 AM CDT17Good0.818.3
Wed, 1:00 AM CDT15Good1.516.8
Wed, 2:00 AM CDT14Good3.415.7
Wed, 3:00 AM CDT17Good3.815.5
Wed, 4:00 AM CDT17Good3.216
Wed, 5:00 AM CDT16Good2.716.5
Wed, 6:00 AM CDT15Good217
Wed, 7:00 AM CDT16Good317.4

Fine particles in micrograms per cubic meter, ozone in parts per billion as an 8-hour average. The index for each hour is EPA’s: the ozone figure is already the 8-hour average the ozone index is defined on, and the particle figure is run through EPA’s NowCast, which is how an hourly PM2.5 concentration becomes an index.

Smoke

NOAA’s analysts have not drawn smoke over Ashwaubenon in satellite imagery today.

NOAA’s model forecasts no measurable smoke near the ground here over the next two days.

Smoke on the radar over Ashwaubenon

What this means

Good

Air quality is satisfactory, and air pollution poses little or no risk.

Who is affected
Nobody is expected to be affected.
What to do
It is a good day to be outside.
Index range
0 to 50

Category descriptions are the Environmental Protection Agency’s own.

What these numbers are. An index beside a monitor’s name is a measurement, published hourly by AirNow and preliminary until the operating agency certifies it. A category for today or tomorrow is a state or local agency forecaster’s own forecast for a reporting area. An hourly index is NOAA’s air quality model on a five-kilometer grid, not a reading from any instrument. Where a town has no monitor within reach, only the model figures appear, and the page says so.

Nearby

The nearest towns with a page of their own, closest first.

Weather forecast for AshwaubenonWarnings in Brown CountyLive radar over AshwaubenonWisconsin air quality

Sources

Observations and daily forecasts from AirNow, the US Environmental Protection Agency’s program with NOAA, the National Park Service, NASA, tribal, state and local agencies. Hourly forecasts from NOAA’s National Air Quality Forecast Capability. Smoke analysis from NOAA’s Hazard Mapping System. Alerts from the National Weather Service. Index categories and breakpoints are EPA’s, as revised in 2024.