Minnesota air quality

Scandia, Minnesota Air Quality

Washington County45.254, -92.806

The nearest monitor to Scandia, at Marine on St. Croix, 6 miles away, measured an index of 19 at Thu, 10:00 PM CDT, which is Good for ground-level ozone. Minnesota Pollution Control Agency forecasts Good for Northern Twin Cities Metro today and Good tomorrow.

Measured now
19 · Good
Today
28 · Good
Tomorrow
31 · Good
Pollutant
Ozone

Fine particles on the map

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

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Scandia, Minnesota 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 Scandia right now. All Minnesota warnings.

Now

Good

Nearest monitor
Marine on St. Croix, 6 miles away (site 271636016)
Index measured
19 · Good
Measured at
Thu, 10:00 PM CDT
Ozone
21 ppb
Reporting area
Northern Twin Cities Metro, MN, 23 miles away
Reported by
Minnesota Pollution Control Agency
Area index
28 · 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 Northern Twin Cities Metro, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood28PM2.5
TomorrowGood31Ozone
Saturday, September 26GoodOzone
Sunday, September 27GoodOzone

The forecaster’s discussion

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

Widespread cloud cover and mild temperatures have stalled ozone formation this afternoon, while light winds and some rain showers have kept particulate concentrations in check, resulting in good air quality across the state today. This marks the 20th day in a row of AQI in the Green category across the entire state! Looking ahead, very calm winds Thursday night into Friday morning may cause poor dispersion conditions overnight for the eastern half of Minnesota, and you may see fog into the early morning hours, but that doesn't mean that air quality is bad! Instead, we can expect more days of statewide Green (good) air quality conditions as we head into the weekend.

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 53, Moderate, around Sat, 5:00 AM CDT, from the run issued Thu, 10:00 PM CDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Thu, 11:00 PM CDT52Moderate9.920
Fri, 12:00 AM CDT52Moderate10.120.3
Fri, 1:00 AM CDT52Moderate9.920.5
Fri, 2:00 AM CDT52Moderate10.320.6
Fri, 3:00 AM CDT52Moderate9.820
Fri, 4:00 AM CDT52Moderate9.118.2
Fri, 5:00 AM CDT51Moderate7.916.3
Fri, 6:00 AM CDT47Good7.115.1
Fri, 7:00 AM CDT41Good6.213.6
Fri, 8:00 AM CDT38Good6.112.3
Fri, 9:00 AM CDT39Good7.411.4
Fri, 10:00 AM CDT44Good9.510.7
Fri, 11:00 AM CDT50Good10.510.6
Fri, 12:00 PM CDT52Moderate10.112.7
Fri, 1:00 PM CDT48Good7.315.8
Fri, 2:00 PM CDT42Good6.419
Fri, 3:00 PM CDT37Good5.621.8
Fri, 4:00 PM CDT32Good5.124.8
Fri, 5:00 PM CDT28Good4.327.8
Fri, 6:00 PM CDT29Good4.731.2
Fri, 7:00 PM CDT31Good5.333.6
Fri, 8:00 PM CDT32Good6.733.5
Fri, 9:00 PM CDT36Good7.231.2
Fri, 10:00 PM CDT43Good928.3
Fri, 11:00 PM CDT46Good8.926
Sat, 12:00 AM CDT49Good9.523.1
Sat, 1:00 AM CDT51Moderate9.519.8
Sat, 2:00 AM CDT52Moderate9.915.9
Sat, 3:00 AM CDT52Moderate9.412.8
Sat, 4:00 AM CDT52Moderate9.910.9
Sat, 5:00 AM CDT53Moderate10.510.7
Sat, 6:00 AM CDT53Moderate9.911
Sat, 7:00 AM CDT52Moderate9.610.8
Sat, 8:00 AM CDT52Moderate9.211.6
Sat, 9:00 AM CDT52Moderate913.1
Sat, 10:00 AM CDT52Moderate9.515.3
Sat, 11:00 AM CDT51Moderate8.617.3
Sat, 12:00 PM CDT49Good7.920
Sat, 1:00 PM CDT47Good7.622.6
Sat, 2:00 PM CDT47Good8.524.5
Sat, 3:00 PM CDT48Good9.127
Sat, 4:00 PM CDT49Good9.429
Sat, 5:00 PM CDT50Good9.730.7
Sat, 6:00 PM CDT51Moderate9.832.1
Sat, 7:00 PM CDT50Good8.633.1
Sat, 8:00 PM CDT52Moderate11.332.2
Sat, 9:00 PM CDT52Moderate9.629.8
Sat, 10:00 PM CDT52Moderate9.627.1
Sat, 11:00 PM CDT52Moderate9.324.1
Sun, 12:00 AM CDT52Moderate9.221.2
Sun, 1:00 AM CDT52Moderate9.818.1
Sun, 2:00 AM CDT52Moderate10.815.1
Sun, 3:00 AM CDT53Moderate10.711.6
Sun, 4:00 AM CDT53Moderate10.89.2
Sun, 5:00 AM CDT53Moderate10.48.3
Sun, 6:00 AM CDT52Moderate8.58.3
Sun, 7:00 AM CDT52Moderate9.88.1

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 Scandia 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 Scandia

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 ScandiaWarnings in Washington CountyLive radar over ScandiaMinnesota 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.