Air quality in Tucson

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

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Weather

What is the current weather in Tucson?

Weather icon
WeatherFew clouds
Temperature95°C
Humidity39%
Wind3 mp/h
Pressure1016 mb

live aqi city ranking

Real-time USA city ranking

#cityUS AQI
1 Hoopa, California

423

2 Weaverville, California

381

3 Hayfork, California

189

4 Willow Creek, California

159

5 Laurel, Maryland

156

6 Orland, California

119

7 Cottonwood, California

117

8 Yosemite Valley, California

107

9 Shasta, California

98

10 Terrell, Texas

93

(local time)

SEE WORLD AQI RANKING

live Tucson aqi ranking

Real-time Tucson air quality ranking

#stationUS AQI
1 Coachline

34

2 Childrens Park

20

3 South Tucson

17

4 West Virgil Drive

16

5 Geronimo

15

6 Prince Tucson

15

7 North Evelyn Avenue

12

8 North Placita Nueva

11

9 East Paseo De Mejia

10

10 N Via Carina

10

(local time)

SEE WORLD AQI RANKING

Tucson webcam

6:59, Aug 13

Is there air pollution in Tucson?

Thumbnail of Tucson webcam at 6:59, Aug 13

US AQI

11

live AQI index
Good

Human face indicating AQI level

Overview

What is the current air quality in Tucson?

Air pollution levelAir quality indexMain pollutant
Good 11 US AQItrendPM2.5
PollutantsConcentration
PM2.5
2.8µg/m³trend

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

Health Recommendations

How to protect from air pollution in Tucson?

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Forecast

Tucson air quality index (AQI) forecast

DayPollution levelWeatherTemperatureWind
Tuesday, Aug 9

Good 30 US AQI

Human face indicating AQI level
Weather icon98.6°73.4°
Wind rotating 64 degree

13.4 mp/h

Wednesday, Aug 10

Good 38 US AQI

Human face indicating AQI level
Weather icon95°78.8°
Wind rotating 213 degree

15.7 mp/h

Thursday, Aug 11

Good 33 US AQI

Human face indicating AQI level
Weather icon91.4°82.4°
Wind rotating 301 degree

13.4 mp/h

Friday, Aug 12

Good 21 US AQI

Human face indicating AQI level
Weather icon95°80.6°
Wind rotating 130 degree

13.4 mp/h

Today

Good 11 US AQI

Human face indicating AQI level
Weather icon93.2°78.8°
Wind rotating 300 degree

8.9 mp/h

Sunday, Aug 14

Good 39 US AQI

Human face indicating AQI level
Weather icon96.8°77°
Wind rotating 108 degree

20.1 mp/h

Monday, Aug 15

Good 42 US AQI

Human face indicating AQI level
Weather icon93.2°75.2°
Wind rotating 116 degree

17.9 mp/h

Tuesday, Aug 16

Moderate 56 US AQI

Human face indicating AQI level
Weather icon96.8°84.2°
Wind rotating 84 degree

15.7 mp/h

Wednesday, Aug 17

Good 39 US AQI

Human face indicating AQI level
Weather icon91.4°80.6°
Wind rotating 122 degree

8.9 mp/h

Thursday, Aug 18

Good 31 US AQI

Human face indicating AQI level
Weather icon80.6°77°
Wind rotating 297 degree

4.5 mp/h

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Historical

Historic air quality graph for Tucson

How to best protect from air pollution?

Reduce your air pollution exposure in Tucson

AIR QUALITY ANALYSIS AND STATISTICS FOR Tucson

Does Tucson have good air quality?

Tucson is a city located in the state of Arizona, within Pima County, found in the South Central region of the state. It is home to over 520 thousand inhabitants, making it the second largest city in Arizona, as well as the 33rd largest out of all cities counted within the United States. It has a history of being founded as a military fort city, and has seen continued growth in its population size since its conception in the late 18th century.

Nowadays it sees much of its economic activity based around higher education and science facilities, tech companies as well as the military having a strong presence, acting as a large employer amongst the population within its various branches. Tourism also accounts for a sizeable portion of the economy, and as such there would be a need to have a large number of hotels and guesthouses throughout the city to host the estimated 3.5 million annual visitors (in the pre-Covid era).

With a considerable population, coupled with the large movement of people in and out of the city, Tucson’s air is subsequently affected by this large scale anthropogenic activity. However, despite this it still manages to maintain very respectable level of air quality, even with such activities going on within the city. In 2020, Tucson came in with a PM2.5 reading of 5.9 μg/m³ as its yearly average, a very good reading that placed it well within the World Health Organizations (WHO's) target goal at 10 μg/m³ or less, for the best quality of air. This very low reading placed it amongst one of the top cities in the world for clean air, coming in at 4373rd place out of all cities ranked worldwide, as well as 1301st place out of all cities ranked in America.

What are some causes of polluted air in Tucson?

Even with such a respectable level of air quality present in Tucson, there are inevitably sources of pollution that would drive the PM2.5 count up somewhat, alluding to the fact that the air could be of even better quality. One cause would be regarding the fact that Tucson utilizes a large amount of fossil fuels for its energy supplies.

A majority of this comes from natural gas, which although is a much cleaner alternative to other fossil fuels such as diesel or coal, still carries with it a fair amount of atmosphere polluting capabilities. Of note is that certain factories and power plants will still use coal as a power source which can put out large amounts of chemical pollutants and particulate matter, all of which can raise the PM2.5 count.

The other most prominent cause of pollution would be that of vehicular emissions. With a huge population, coupled with a large amount of tourists moving in and out of the city (as well as the inhabitants commuting on a daily basis), there would subsequently be a large amount of pollution accumulating in certain areas due to the heavy overuse of cars. Vehicles can release the same chemical compounds and hazardous particulate matter as factories can, as well as releasing large amounts of microscopic rubber particles into the air over time due to wear and tear on tire treads. This can have a disastrous effect on the health of humans who respire it, as well as on the environment. These are some of the main causes of air pollution occurring within Tucson, with other ones such as occasional forest fires, construction sites and road repairs all being contributing factors to smoke, haze and fine particulate matter (PM2.5 and PM10).

When is the air at its most polluted in Tucson?

Observing the data gathered over the course of 2020, there emerges a period in which the air pollution levels were distinctly higher than the rest of the year, albeit still coming in within respectable levels due to the exceptionally clean air quality that the city maintains throughout the year. These more polluted months started to occur around the month of August, and running through to the end of the year. For some of the latter months of the year, this can be due to a much higher demand placed on power plants to provide energy for the heating of both homes and businesses, and is a common sight in many cities throughout the world that see a large seasonal drop in temperature. Of note is that hotter months can also see their own spikes in pollution for different reasons

The month of July came in with a very good reading of 34.8 μg/m³, which was then followed by a rise up to 7.5 μg/m³ in August. It was during this month onward whereby the air pollution levels became even higher, with readings of 8.1 μg/m³, 7.4 μg/m³, 7.7 μg/m³ and 8 μg/m³ respectively (from September to December), making them among the highest readings of the year.

One of the colder months of the year in Tucson is December, and this matched accordingly with the pollution reading. December came in with a reading of 8 μg/m³, making it the most polluted month of the year (before it dropped down significantly in the early months of the following year, in accordance with the PM2.5 readings shown in early 2020). This is indicative that August through to December is when the pollution levels would be at their worst in Tucson.

When is the air quality at its best in Tucson?

In opposition to the previous question, after the heightened readings of PM2.5 started to abate early in the year, the air quality entered into a period of time in which the level of air pollution was even lower, making it extremely clean and breathable, free from large amounts of smoke, haze and other air contaminants that many cities throughout the United States are unfortunately subject to.

The months of February through to April showed the cleanest air readings on record, with readings of 3.8 μg/m³, 2.4 μg/m³ and 3.9 μg/m³ all being shown respectively. This made March the cleanest month of the year with its reading of 2.4 μg/m³, an extremely respectable reading. Of note is that the PM2.5 count rose slightly during the summer months, for reasons that will be covered in short.

What are some of the types of pollution found in Tucson?

The main types of pollutants found in the air in Tucson would be ones such as nitrogen dioxide (NO2) and sulfur dioxide (SO2), which find a large amount of their release from vehicles, alongside other pollutants such as carbon monoxide (CO), black carbon and volatile organic compounds (VOC's). Another pollutant that is a particular problem in the United States is ozone, which is formed when the various oxides of nitrogen (NOx) and other chemical pollutants or gases are exposed to large amounts of solar radiation, thence converting into ozone (O3).

This could account for the slight rise in PM2.5 witnessed during the summer months, in which large amounts of ozone can accumulate due to heavy vehicle use coupled with plentiful sunshine coming into contact with the vehicular exhaust fumes. Some examples of the aforementioned VOC's include chemicals such as benzene, toluene, xylene, methylene chloride and formaldehyde.

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