Air quality in Minneapolis

Air quality index (AQI) and PM2.5 air pollution in Minneapolis

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Weather

What is the current weather in Minneapolis?

Weather icon
WeatherFew clouds
Temperature68°C
Humidity68%
Wind10.4 mp/h
Pressure1019 mb

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Real-time USA city ranking

#cityUS AQI
1 Hayfork, California

175

2 Dayton, Montana

169

3 Cave Junction, Oregon

154

4 Redwood, Oregon

134

5 Grants Pass, Oregon

129

6 Jacksonville, Oregon

118

7 Brawley, California

117

8 Elkton, Maryland

113

9 La Jolla, California

112

10 Medford, Oregon

112

(local time)

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live Minneapolis aqi ranking

Real-time Minneapolis air quality ranking

#stationUS AQI
1 Minneapolis-Lowry Ave

29

2 Minneapolis-Near Road

24

3 Minneapolis - Bottineau/Marshall Terrace

21

4 Minneapolis - Andersen School

20

5 Minneapolis-Pacific St

17

6 Powderhorn

17

7 Ventura Village

15

8 Washington Street NE

15

9 City of Minneapolis Community Air Monitoring Project 8

14

10 City of Minneapolis community air monitoring project 31

14

(local time)

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US AQI

11

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Good

Human face indicating AQI level

Overview

What is the current air quality in Minneapolis?

Air pollution levelAir quality indexMain pollutant
Good 11 US AQItrendPM2.5
PollutantsConcentration
PM2.5
2.6µg/m³trend

PM2.5 concentration in Minneapolis air currently meets the WHO annual air quality guideline value

Health Recommendations

How to protect from air pollution in Minneapolis?

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Forecast

Minneapolis air quality index (AQI) forecast

DayPollution levelWeatherTemperatureWind
Thursday, Aug 4

Good 26 US AQI

Human face indicating AQI level
Weather icon93.2°64.4°
Wind rotating 168 degree

15.7 mp/h

Friday, Aug 5

Good 44 US AQI

Human face indicating AQI level
Weather icon75.2°66.2°
Wind rotating 169 degree

8.9 mp/h

Saturday, Aug 6

Good 25 US AQI

Human face indicating AQI level
Weather icon71.6°59°
Wind rotating 348 degree

11.2 mp/h

Sunday, Aug 7

Good 12 US AQI

Human face indicating AQI level
Weather icon78.8°51.8°
Wind rotating 350 degree

6.7 mp/h

Today

Good 11 US AQI

Human face indicating AQI level
Weather icon87.8°59°
Wind rotating 174 degree

6.7 mp/h

Tuesday, Aug 9

Good 32 US AQI

Human face indicating AQI level
Weather icon89.6°64.4°
Wind rotating 29 degree

6.7 mp/h

Wednesday, Aug 10

Good 21 US AQI

Human face indicating AQI level
Weather icon82.4°62.6°
Wind rotating 118 degree

6.7 mp/h

Thursday, Aug 11

Good 18 US AQI

Human face indicating AQI level
Weather icon69.8°60.8°
Wind rotating 99 degree

13.4 mp/h

Friday, Aug 12

Good 20 US AQI

Human face indicating AQI level
Weather icon78.8°62.6°
Wind rotating 132 degree

13.4 mp/h

Saturday, Aug 13

Good 26 US AQI

Human face indicating AQI level
Weather icon82.4°59°
Wind rotating 125 degree

6.7 mp/h

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Historical

Historic air quality graph for Minneapolis

How to best protect from air pollution?

Reduce your air pollution exposure in Minneapolis

AIR QUALITY ANALYSIS AND STATISTICS FOR Minneapolis

How polluted is the air in Minneapolis?

Between 2017 and 2019, Minneapolis air quality fared well for the most stringent government air quality measures: daily ozone, daily PM2.5, and annual PM2.5.1 Historical trends further demonstrate that the frequency and severity of ozone and particulate pollution have shown improvements in recent years.


PM2.5 pollution


PM2.5 is suspended particulate matter (PM) measuring less than 2.5 micrometers in diameter. Since size is its defining characteristic, PM2.5 can include chemicals, dust, dirt, smoke, soot, pathogens, and other particles of various compositions.

Often, the substance of particulate matter is localized to the area’s emission sources. As a result, some PM2.5 samples may be more dangerous than others, but all have the potential for far-reaching health consequences – because PM2.5 is so small, it can penetrate into the bloodstream when inhaled and travel to all of the body's organs.

In Minneapolis, PM2.5 pollution is the pollutant of greatest concern. While the city meets government standards for both short-term and annual PM2.5, it is important to note that no level of PM2.5 has been shown to be free of health impact. Moreover, PM2.5 levels in the city can exceed the World Health Organization’s (WHO) more stringent standards. The WHO targets an annual PM2.5 concentration no greater than 10 µg/m3.2 In 2020, both January and December averaged monthly concentration values above this standard at 11.2 µg/m3 and 12.1 µg/m3 respectively.

On an annual basis, Minneapolis averaged a PM2.5 concentration of 8.4 µg/m3, ranked as the 6th most polluted city in the state of Minnesota out of 22 cities. The 5 cities that averaged a higher PM2.5 concentration than Minneapolis included:



Ozone


Ozone is a highly reactive gas pollutant with a high potential for harm when inhaled. It’s known as a “secondary air pollutant” because it is primarily formed in the air (rather than by ground-based sources) when primary pollutants, such as nitrogen dioxide (NO2) and volatile organic compounds (VOCs), react in the presence of heat and UV radiation.

Typically, temperatures above 84°F initiate this chemical reaction between precursor pollutants. In Minneapolis, only July and August commonly experience average temperatures around this threshold, so high ozone events are generally rare.3 Between 2017 and 2019, zero days in Minneapolis averaged ozone levels above 70 ppb.

Does the air quality in Minneapolis vary throughout the year?

Air pollution in Minneapolis exhibits seasonal changes. PM2.5 concentrations are roughly two times higher in the winter than in the summer.

To understand this trend, it is important to recognize that measured Minneapolis air quality levels are the result of both local and transported emissions as well as weather conditions that dictate pollution dispersion.

In the winter, the combination of seasonal emissions and weather conditions not ideal for pollution dispersion can elevate PM2.5 concentrations.

Winter-specific emissions in Minneapolis include:


  • increased car idling for heating and defrosting
  • increased wood burning for heating and atmosphere
  • increased energy consumption for heat and light in homes and offices during long winter nights

Weather conditions that are not ideal for pollution dispersion include:


  • calmer winds
  • less frequent precipitation
  • cool air inversions when cold, ground-level air (created by frozen or snow-covered ground) is trapped beneath a denser warm air layer

While 10 months during the year in Minneapolis typically meet WHO PM2.5 standards (< 10 µg/m3), these standards are frequently breached during December and January (as occurred in 2020) when increased emissions and pollution-trapping weather conditions cause PM2.5 to accumulate faster and reach higher concentration levels.

Where does the air pollution in Minneapolis come from?

Minneapolis is the most populous city in the state of Minnesota with a population of 430,000 residents.4 The greater metropolitan area, commonly referred to as the “Twin Cities,” also includes Saint Paul, the state capital located just 9 miles to the west, and spans seven counties: Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington. A total of 3,099,000 residents live within this Twin Cities region, accounting for 55% of the state’s total population.

As is common in large urban areas, the majority of Minneapolis’s air pollution originates from gas-powered motor vehicles and domestic sources within the great region.

The Minnesota Pollution Control Agency estimates that state-wide emissions can be broken down into the following categories:5


  • 24 percent: on-road vehicles, such as gas-powered cars and trucks
  • 20 percent: off-road vehicles, such as construction and agricultural equipment
  • 35 percent: neighborhood sources, such as dry cleaners, domestic heating, BBQs, and outdoor fires
  • 21 percent: industrial facilities, including factories and power plants

Wildfire smoke blown in from Canada and the Pacific Northwest can also deliver dense plumes of PM2.5. These emissions are typically sporadic and temporary but can cause severe short-term spikes in Minneapolis air pollution levels. Of the 26 air quality alerts since 2015, 14 have been attributed to wildfire smoke.6

Is anything being done to improve the air quality in Minneapolis?

In Minnesota, motor vehicles are the leading source of both air pollution emissions and greenhouse gas emissions. Managing this emission source is becoming easier as more “green” transportation options, such as electric vehicles (EVs) and other vehicles powered by alternative fuel like hydrogen, become increasingly affordable and available to the wider public. This represents a major opportunity for Minneapolis and cities around the U.S. to reduce their air pollution levels.

In 2020, Minneapolis made strides towards 100% EV adoption, including:7


  • Electric vehicle (EV) infrastructure boost: $15 million for electric vehicles (EVs) and EV infrastructure, including an electric school bus pilot and fast-charging corridors.
  • Policy progress to boost EV adoption: Tax incentives, rebates, and $2 million in grants for clean transportation technologies.

These measures intend to achieve the goal of powering 20 percent of light-duty (personal) cars in the state with electricity by 2030.

How is human health affected by the poor air quality in Minneapolis?

Every year, 200,000 Americans die from breathing polluted air.8 Even in cities where air quality is generally deemed safe, air pollution can still cause premature mortality and illness. A 2015 study conducted by the Minnesota Pollution Control Agency (MPCA) found that 6 to 13 percent of Twin Cities deaths were caused by air pollution that meets federal standards.9 Moreover, other health outcomes can still be severe, including:


  • asthma attacks
  • lung tissue scarring and reduced lung function
  • heart arrhythmias
  • cancer
  • heart attacks
  • stroke

In Hennepin County, the number of residents living with sensitivities that predispose them to more acute health impacts from air pollution include:


  • Pediatric asthma: 14,143 residents
  • Adult asthma: 82,545 residents
  • COPD: 41,040 residents
  • Cardiovascular disease: 65,666 residents
  • Age under 18: 276,136 residents
  • Age over 65: 183,653 residents

Sometimes, localized emission sources can fail to be captured by city-wide air quality monitors. Traffic pollution, for example, has been found to cause asthma attacks and a broader range of health impacts. People within 300 to 500 meters of a highway have been found to be most impacted.

In the same vein, numerous studies have observed that the burden of air pollution is not evenly shared. People of color (Hispanics, Asians, American Indians/Alaska Natives and especially African Americans) statistically bear a greater health burden when it comes to air quality because they are 61 percent more likely to live in a county with a failing grade for at least one pollutant.1 This is the result of decades of unjust zoning that has, for example, placed airports, highways, and polluting industrial facilities such as factories closer to lower-income communities that more likely to be composed of a diversity of minority groups.

A study of the East Phillips area has revealed that this trend is consistent in the city of Minneapolis. Decades ago, East Phillips was known as the Arsenic Triangle after a pesticide plant contaminated the area.10 Today, local pollution sources include the Bituminous Roadways asphalt plant, Smith Foundry, and surrounding highways. Between 2019 and 2020 alone, average annual PM2.5 has increased in East Phillips by 25 percent.

Four-fifths of East Phillips residents are people of color – 38.2% are Hispanic or Latino, 26.4% are Black or African American, 9.8% are Native American, and at least 5% are Asian, with White residents only comprising 19.1% of the total area population.11 State legislator Karen Clark has thus deemed the issue an environmental justice issue that must urgently be addressed. She has worked to pass legislation that requires new operations in the neighborhood to account for the health impacts of pollution on residents and is now working to uphold these standards.

+ Article Resources

[1] American Lung Association. (2020). State of the air – 2020.
[2] World Health Organization. (2020). Air quality guidelines – global update 2005.
[3] Current Results. (2020). Minneapolis temperatures: averages by month.
[4] Metropolitan Council. (2019, April 18). Steady growth continues in metro area.
[5] Minnesota Pollution Control Agency (MPCA). (2020). Sources of air pollution.
[6] Minnesota Pollution Control Agency (MPCA). (2020). Smoky summers the new normal?
[7] Bocklund K. (2021). Looking back: progress made toward transportation electrification in Minnesota in 2020. Drive Electric Minnesota.
[8] Chu J, et al. (2013). Study: Air pollution causes 200,000 early deaths each year in the U.S. MIT News Office.
[9] Minnesota Pollution Control Agency (MPCA). (2015). Life and breathe: how air pollution affects the Twin Cities.
[10] Jones J. (2021, April 28). Meet Karen Clark, Minnesota’s trailblazing pollution legislator. Mpls St. Paul.
[11] East Phillips neighborhood data. (2021). Minnesota Compass.

Minneapolis air quality data attribution

Contributors 31

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