Minnesota air quality

Dellwood, Minnesota Air Quality

Washington County45.090, -92.972

The nearest monitor to Dellwood, at St. Paul-Harding H.S., 10 miles away, measured an index of 19 at Sun, 8:00 AM CDT, which is Good for fine particles (PM2.5). Minnesota Pollution Control Agency forecasts Good for Twin Cities today and Good tomorrow.

Measured now
19 · Good
Today
— · Good
Tomorrow
— · Good
Pollutant
PM2.5

Fine particles on the map

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

Now

Good

Nearest monitor
St. Paul-Harding H.S., 10 miles away (site 271230871)
Index measured
19 · Good
Measured at
Sun, 8:00 AM CDT
Fine particles
3.3 µg/m³
Reporting area
Twin Cities, MN, 14 miles away
Reported by
Minnesota Pollution Control Agency
Area index
23 · 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
TodayGoodOzone
TomorrowGoodOzone
Tuesday, September 22GoodOzone
Wednesday, September 23GoodOzone

The forecaster’s discussion

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

Continued below normal temperatures and the lack of wind moving persistently from a source region of elevated concentrations of fine particle pollution into Minnesota means continued Green (good) AQI statewide through the weekend and into next week.

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 Tue, 6:00 PM CDT, from the run issued Sun, 1:00 AM CDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Sun, 3:00 AM CDT5Good1
Sun, 4:00 AM CDT5Good0.9
Sun, 5:00 AM CDT3Good0.4
Sun, 6:00 AM CDT2Good0.3
Sun, 7:00 AM CDT3Good0.9
Sun, 8:00 AM CDT3Good0.6
Sun, 9:00 AM CDT14Good0.915.9
Sun, 10:00 AM CDT15Good1.117
Sun, 11:00 AM CDT17Good2.118.3
Sun, 12:00 PM CDT19Good1.520.3
Sun, 1:00 PM CDT20Good0.822.2
Sun, 2:00 PM CDT21Good0.323.7
Sun, 3:00 PM CDT22Good0.724.7
Sun, 4:00 PM CDT23Good0.725.4
Sun, 5:00 PM CDT23Good0.525.8
Sun, 6:00 PM CDT23Good0.625.6
Sun, 7:00 PM CDT22Good125
Sun, 8:00 PM CDT21Good1.123.9
Sun, 9:00 PM CDT20Good0.722.6
Sun, 10:00 PM CDT19Good0.621.3
Sun, 11:00 PM CDT19Good0.920
Mon, 12:00 AM CDT18Good0.919
Mon, 1:00 AM CDT17Good0.618.1
Mon, 2:00 AM CDT16Good0.617.4
Mon, 3:00 AM CDT15Good0.816.9
Mon, 4:00 AM CDT15Good0.516.3
Mon, 5:00 AM CDT14Good0.515.6
Mon, 6:00 AM CDT14Good0.815
Mon, 7:00 AM CDT13Good0.914.2
Mon, 8:00 AM CDT12Good113.3
Mon, 9:00 AM CDT11Good0.912.2
Mon, 10:00 AM CDT10Good0.911.7
Mon, 11:00 AM CDT10Good0.912
Mon, 12:00 PM CDT11Good112.7
Mon, 1:00 PM CDT12Good1.114
Mon, 2:00 PM CDT14Good1.115.5
Mon, 3:00 PM CDT15Good117
Mon, 4:00 PM CDT17Good118.4
Mon, 5:00 PM CDT19Good120
Mon, 6:00 PM CDT19Good1.121.4
Mon, 7:00 PM CDT19Good1.421.5
Mon, 8:00 PM CDT19Good0.920.7
Mon, 9:00 PM CDT18Good1.219.8
Mon, 10:00 PM CDT17Good0.918.2
Mon, 11:00 PM CDT15Good1.216
Tue, 12:00 AM CDT12Good1.613.9
Tue, 1:00 AM CDT10Good1.611.6
Tue, 2:00 AM CDT8Good1.29.1
Tue, 3:00 AM CDT6Good0.57.5
Tue, 4:00 AM CDT6Good0.66.3
Tue, 5:00 AM CDT4Good0.55
Tue, 6:00 AM CDT4Good0.84.2
Tue, 7:00 AM CDT4Good0.64.1
Tue, 8:00 AM CDT4Good0.64.2
Tue, 9:00 AM CDT4Good0.75
Tue, 10:00 AM CDT6Good0.76.6
Tue, 11:00 AM CDT7Good0.78.7
Tue, 12:00 PM CDT10Good0.711.6
Tue, 1:00 PM CDT13Good0.714.9
Tue, 2:00 PM CDT17Good1.118.6
Tue, 3:00 PM CDT20Good3.622.3
Tue, 4:00 PM CDT24Good2.626.1
Tue, 5:00 PM CDT27Good0.929.1
Tue, 6:00 PM CDT29Good0.831.1
Tue, 7:00 PM CDT29Good1.131.5
Tue, 8:00 PM CDT28Good1.430.4
Tue, 9:00 PM CDT26Good1.128.6
Tue, 10:00 PM CDT24Good0.526.6
Tue, 11:00 PM CDT22Good124.2
Wed, 12:00 AM CDT19Good1.321.3
Wed, 1:00 AM CDT17Good1.218.6

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 Dellwood 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 Dellwood

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 DellwoodWarnings in Washington CountyLive radar over DellwoodMinnesota 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.