Wisconsin air quality

New Richmond, Wisconsin Air Quality

Saint Croix County45.123, -92.537

The nearest monitor to New Richmond, at Marine on St. Croix, 12 miles away, measured an index of 23 at Tue, 1:00 PM CDT, which is Good for ground-level ozone. Minnesota Pollution Control Agency forecasts Good for Twin Cities today and Good tomorrow.

Measured now
23 · Good
Today
36 · Good
Tomorrow
34 · Good
Pollutant
Ozone

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over New Richmond, 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 New Richmond, 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 New Richmond right now. All Wisconsin warnings.

Now

Good

Nearest monitor
Marine on St. Croix, 12 miles away (site 271636016)
Index measured
23 · Good
Measured at
Tue, 1:00 PM CDT
Ozone
27 ppb
Reporting area
Twin Cities, MN, 34 miles away
Reported by
Minnesota Pollution Control Agency
Area index
26 · Good

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

Today and tomorrow

Minnesota Pollution Control Agency's own forecast for Twin Cities, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood36Ozone
TomorrowGood34Ozone
Thursday, September 24GoodOzone

The forecaster’s discussion

Written by Minnesota Pollution Control Agency for Twin Cities and filed with AirNow.

Southeasterly flow over the next few days may bring slightly higher amounts of ozone precursors into the region from Chicagoland, but relatively mild temperatures and scattered clouds should limit ozone formation and keep us safely within the Green AQI category. Recent precipitation and light winds should similarly limit particulate concentrations statewide.

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 48, Good, around Thu, 7:00 PM CDT, from the run issued Tue, 7:00 AM CDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Tue, 9:00 AM CDT6Good1.3
Tue, 10:00 AM CDT3Good0.4
Tue, 11:00 AM CDT3Good0.3
Tue, 12:00 PM CDT2Good0.4
Tue, 1:00 PM CDT2Good0.2
Tue, 2:00 PM CDT1Good0.1
Tue, 3:00 PM CDT19Good0.121.4
Tue, 4:00 PM CDT22Good0.324.5
Tue, 5:00 PM CDT25Good0.527.1
Tue, 6:00 PM CDT26Good0.828.7
Tue, 7:00 PM CDT27Good0.829.3
Tue, 8:00 PM CDT26Good0.828.1
Tue, 9:00 PM CDT24Good0.926.4
Tue, 10:00 PM CDT22Good0.924.8
Tue, 11:00 PM CDT20Good0.822.8
Wed, 12:00 AM CDT19Good0.820.4
Wed, 1:00 AM CDT16Good0.818
Wed, 2:00 AM CDT14Good0.915.9
Wed, 3:00 AM CDT13Good0.914.4
Wed, 4:00 AM CDT12Good013.8
Wed, 5:00 AM CDT12Good0.413.4
Wed, 6:00 AM CDT11Good0.412.7
Wed, 7:00 AM CDT11Good0.412
Wed, 8:00 AM CDT10Good0.411.3
Wed, 9:00 AM CDT9Good0.310.6
Wed, 10:00 AM CDT9Good0.410.4
Wed, 11:00 AM CDT10Good111.2
Wed, 12:00 PM CDT12Good0.413.2
Wed, 1:00 PM CDT14Good0.415.6
Wed, 2:00 PM CDT17Good0.818.7
Wed, 3:00 PM CDT19Good1.321.9
Wed, 4:00 PM CDT23Good1.525.7
Wed, 5:00 PM CDT26Good2.428.9
Wed, 6:00 PM CDT29Good3.431.1
Wed, 7:00 PM CDT30Good4.232.3
Wed, 8:00 PM CDT29Good4.731.8
Wed, 9:00 PM CDT28Good4.530.8
Wed, 10:00 PM CDT26Good4.828.9
Wed, 11:00 PM CDT27Good5.426.8
Thu, 12:00 AM CDT29Good5.524
Thu, 1:00 AM CDT29Good5.521.5
Thu, 2:00 AM CDT28Good4.919.3
Thu, 3:00 AM CDT27Good4.517.2
Thu, 4:00 AM CDT26Good4.516.1
Thu, 5:00 AM CDT27Good4.915.4
Thu, 6:00 AM CDT26Good4.415.2
Thu, 7:00 AM CDT27Good515.1
Thu, 8:00 AM CDT27Good5.115.4
Thu, 9:00 AM CDT28Good5.715.7
Thu, 10:00 AM CDT28Good5.116.2
Thu, 11:00 AM CDT26Good416.7
Thu, 12:00 PM CDT23Good3.517.3
Thu, 1:00 PM CDT23Good4.317.4
Thu, 2:00 PM CDT27Good5.917.8
Thu, 3:00 PM CDT29Good5.918.1
Thu, 4:00 PM CDT33Good6.518.5
Thu, 5:00 PM CDT38Good7.619.1
Thu, 6:00 PM CDT43Good8.919.6
Thu, 7:00 PM CDT48Good9.620.5
Thu, 8:00 PM CDT47Good8.421
Thu, 9:00 PM CDT41Good6.221.4
Thu, 10:00 PM CDT33Good4.821.4
Thu, 11:00 PM CDT32Good5.320.9
Fri, 12:00 AM CDT32Good620
Fri, 1:00 AM CDT32Good5.918.6
Fri, 2:00 AM CDT32Good5.916.7
Fri, 3:00 AM CDT30Good5.114.3
Fri, 4:00 AM CDT29Good5.312.2
Fri, 5:00 AM CDT31Good610.4
Fri, 6:00 AM CDT31Good5.69
Fri, 7:00 AM CDT34Good6.87.7

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 New Richmond 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 New Richmond

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 New RichmondWarnings in Saint Croix CountyLive radar over New RichmondWisconsin 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.