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Lewistown Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Montana

Last Updated: 2025-08-13 04:25:32 PM (Local Time)

location image
Live AQI
28(AQI-US)
Air Quality is
Good
pm10 :  19 µg/m³
PM2.5 :  5 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in Lewistown
sunny

33 °C

Sunny
Humidity
Humidity16 %
Wind Speed
Wind Speed21 km/h
UV Index
UV Index7
Last Updated: 2025-08-13 04:25:32 PM (Local Time)
Map

Lewistown

Major Air Pollutants

Lewistown

PM2.5's Icon

Particulate Matter(PM2.5)

5µg/m³

PM10's Icon

Particulate Matter(PM10)

19µg/m³

CO's Icon

Carbon Monoxide(CO)

1ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

2ppb

O3's Icon

Ozone(O3)

34ppb

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AQI Graph

Historical Air Quality Data

Lewistown

24 Hours
AQI
Lewistown
AQI
.
12-08-2025Time13-08-2025
16
Min.at 10:09 PM on 12th Aug
54
Max.at 1:09 PM on 13th Aug

Want air quality data?

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Lewistown, Montana, United States

AQI
Year
.
AQI

Annual AQI Trends

2020
34AQI
2021
38AQI
12%
Rise
2022
33AQI
-13%
Fall
2023
36AQI
9%
Rise
2024
33AQI
-8%
Fall
2025
26AQI
-21%
Fall
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
-4%
Fall (Improved AQI)

Most & Least Polluted Months

Most PollutedJuly, 202169AQI
Least PollutedApril, 202520AQI

* This data analysis is from year 2020 - 2025

Lewistown's Locations

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Good
28
5
19
21
56
Good
28
5
19
21
56

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

62

temp.28°C
hum.46%
Los Angeles City AQI

Los Angeles

60

temp.27°C
hum.51%
Minneapolis City AQI

Minneapolis

85

temp.28°C
hum.43%
Nashville City AQI

Nashville

27

temp.29°C
hum.70%
New Orleans City AQI

New Orleans

26

temp.31°C
hum.70%
New York City City AQI

New York City

41

temp.30°C
hum.59%
San Francisco City AQI

San Francisco

19

temp.17°C
hum.94%
Washington City AQI

Washington

39

temp.29°C
hum.70%

Air Quality Calendar 2025

Lewistown

2025
AQI
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Jan
29
2 Jan
28
3 Jan
30
4 Jan
33
5 Jan
31
6 Jan
33
7 Jan
31
8 Jan
32
9 Jan
29
10 Jan
35
11 Jan
28
12 Jan
28
13 Jan
34
14 Jan
35
15 Jan
32
16 Jan
32
17 Jan
33
18 Jan
29
19 Jan
28
20 Jan
30
21 Jan
34
22 Jan
31
23 Jan
31
24 Jan
31
25 Jan
30
26 Jan
31
27 Jan
32
28 Jan
35
29 Jan
34
30 Jan
35
31 Jan
37
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Feb
32
2 Feb
37
3 Feb
29
4 Feb
32
5 Feb
32
6 Feb
32
7 Feb
35
8 Feb
36
9 Feb
34
10 Feb
32
11 Feb
36
12 Feb
43
13 Feb
27
14 Feb
22
15 Feb
19
16 Feb
21
17 Feb
18
18 Feb
16
19 Feb
20
20 Feb
23
21 Feb
20
22 Feb
20
23 Feb
19
24 Feb
19
25 Feb
19
26 Feb
19
27 Feb
19
28 Feb
19
March
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Mar
19
2 Mar
20
3 Mar
24
4 Mar
18
5 Mar
19
6 Mar
16
7 Mar
18
8 Mar
19
9 Mar
20
10 Mar
20
11 Mar
18
12 Mar
18
13 Mar
20
14 Mar
25
15 Mar
19
16 Mar
17
17 Mar
20
18 Mar
21
19 Mar
24
20 Mar
23
21 Mar
18
22 Mar
17
23 Mar
18
24 Mar
20
25 Mar
24
26 Mar
29
27 Mar
21
28 Mar
32
29 Mar
21
30 Mar
18
31 Mar
18
April
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Apr
21
2 Apr
23
3 Apr
20
4 Apr
20
5 Apr
20
6 Apr
22
7 Apr
22
8 Apr
16
9 Apr
21
10 Apr
32
11 Apr
38
12 Apr
18
13 Apr
16
14 Apr
20
15 Apr
20
16 Apr
25
17 Apr
16
18 Apr
16
19 Apr
19
20 Apr
16
21 Apr
15
22 Apr
14
23 Apr
18
24 Apr
23
25 Apr
19
26 Apr
20
27 Apr
24
28 Apr
21
29 Apr
20
30 Apr
15
May
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 May
20
2 May
24
3 May
40
4 May
32
5 May
20
6 May
17
7 May
20
8 May
23
9 May
23
10 May
24
11 May
26
12 May
24
13 May
26
14 May
25
15 May
19
16 May
22
17 May
18
18 May
16
19 May
15
20 May
17
21 May
15
22 May
17
23 May
20
24 May
20
25 May
20
26 May
18
27 May
21
28 May
25
29 May
25
30 May
26
31 May
30
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Jun
32
2 Jun
23
3 Jun
25
4 Jun
22
5 Jun
25
6 Jun
24
7 Jun
34
8 Jun
62
9 Jun
57
10 Jun
46
11 Jun
48
12 Jun
57
13 Jun
48
14 Jun
32
15 Jun
33
16 Jun
28
17 Jun
31
18 Jun
31
19 Jun
29
20 Jun
23
21 Jun
31
22 Jun
31
23 Jun
22
24 Jun
27
25 Jun
28
26 Jun
26
27 Jun
25
28 Jun
27
29 Jun
18
30 Jun
20
July
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Jul
26
2 Jul
31
3 Jul
31
4 Jul
28
5 Jul
45
6 Jul
24
7 Jul
24
8 Jul
31
9 Jul
33
10 Jul
29
11 Jul
39
12 Jul
29
13 Jul
30
14 Jul
24
15 Jul
29
16 Jul
44
17 Jul
32
18 Jul
36
19 Jul
32
20 Jul
26
21 Jul
26
22 Jul
36
23 Jul
32
24 Jul
30
25 Jul
35
26 Jul
27
27 Jul
26
28 Jul
28
29 Jul
31
30 Jul
32
31 Jul
40
August
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Aug
37
2 Aug
29
3 Aug
30
4 Aug
31
5 Aug
26
6 Aug
32
7 Aug
25
8 Aug
18
9 Aug
17
10 Aug
31
11 Aug
28
12 Aug
27
13 Aug
-
14 Aug
-
15 Aug
-
16 Aug
-
17 Aug
-
18 Aug
-
19 Aug
-
20 Aug
-
21 Aug
-
22 Aug
-
23 Aug
-
24 Aug
-
25 Aug
-
26 Aug
-
27 Aug
-
28 Aug
-
29 Aug
-
30 Aug
-
31 Aug
-
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

Health Advice For People Living In

Lewistown

0Cigarettes per day

Weekly 0 Cigarettes
Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn Off
  • Car Filter
    Car FilterAdvisable
  • N95 Mask
    N95 MaskAdvisable
  • Stay Indoor
    Stay IndoorAdvisable

As per the current AQI, turn off the air purifier.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Lewistown

  • asthma due to air pollution in LewistownAsthma
  • heart due to air pollution in LewistownHeart Issues
  • allergy due to air pollution in LewistownAllergies
  • sinus due to air pollution in LewistownSinus
  • flu due to air pollution in LewistownCold/Flu
  • copd due to air pollution in LewistownChronic (COPD)
asthma due to air pollution in Lewistown

Low Chances of Asthma

Asthma

Risk of Asthma symptoms is Low when AQI is Good (0-50)

Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath

Do's :

  • Keep track of air quality to plan outdoor activities safely.

  • Drink water to keep airways moist and reduce irritation.

  • Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.

Don'ts :

  • Skip medications that is prescribed by your doctor.

  • Engage in outdoor activities in early morning during high pollen hours.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025

United States

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2025
World's Most PollutedCity Rankings (2024)
World's Most PollutedCountry Rankings(2024)
RankCityAQIAQI Status

Standard Value

Follow

1.

Rosalia, United States

104
Poor
7xabove Standard

2.

Saint Maries, United States

97
Moderate
6xabove Standard

3.

Cheney, United States

94
Moderate
6xabove Standard

4.

Coeur Dalene, United States

90
Moderate
6xabove Standard

5.

Fargo, United States

87
Moderate
6xabove Standard

6.

Minneapolis, United States

85
Moderate
6xabove Standard

7.

East Bethel, United States

85
Moderate
6xabove Standard

8.

St Michael, United States

85
Moderate
6xabove Standard

9.

Ashland, United States

85
Moderate
6xabove Standard

10.

Saint Michael, United States

85
Moderate
6xabove Standard

Last Updated: 13 Aug 2025, 09:35 PM

AQI City Rankings

Air Quality Solutions For Lewistown

Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Air Quality Monitor

Monitor the air quality
Air Quality Sensors

Air Quality Sensors

Sensors to measure the air quality
Fresh Air Machine

Fresh Air Machine

Clean the air you breathe
Car Cabin Filter

Car Cabin Filter

Purify the air in your car
N95 Mask

N95 Mask

Shield yourself from pollution
air quality solutions for offices for Lewistown

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

air quality solutions for smart-city for Lewistown

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

air quality solutions for institutes for Lewistown

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

air quality solutions for hotels for Lewistown

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

air quality solutions for restaurants for Lewistown

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

air quality solutions for rmc-plants for Lewistown

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

air quality solutions for fitness-center for Lewistown

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

air quality solutions for parking-lot for Lewistown

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

air quality solutions for retail-stores for Lewistown

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

air quality solutions for airport for Lewistown

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

air quality solutions for construction-sites for Lewistown

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

air quality solutions for hospitals for Lewistown

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

air quality solutions for bathroom for Lewistown

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

air quality solutions for banks for Lewistown

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

air quality solutions for cinema for Lewistown

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

air quality solutions for real-estates for Lewistown

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Lewistown's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets
aqi air quality app for Lewistown
Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store
Get it onGoogle Play
Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Connect and control your air quality devices.

Air Quality FAQs

at Lewistown

Frequently Asked Questions About Air Quality

What is the current AQI level in Lewistown?

The current real-time AQI level in Lewistown is 28 (Good). This was last updated 2025-08-13 04:25:32 PM (Local Time).

When was the best AQI level in Lewistown in the last 24 hours?

The best AQI level was 16 (Good) at 10:09 PM, Aug 12, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Lewistown in the last 24 hours?

The worst AQI level was 54 (Moderate) at 1:09 PM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Lewistown during last 24 hours?

The AQI levels in Lewistown have been fluctuating throughout the last 24 hours. The levels have increased by highest 54 at 1:09 PM (Local Time), lowest 16 at 10:09 PM, Aug 12, 2025 (Local Time).

What actions are recommended as per the current AQI level in Lewistown?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.

Recent AQI Blogs

Read the latest news

Here are some latest blogs that you can go through to find out more air pollution.

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Prana Sense

Air Quality Monitor

Air Quality Index depicts the extent of air pollution at a particular location.

Prana Sense Air Quality MonitorPrana Sense Air Quality Monitor
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Pocket PM

Air Quality Monitor

Know the air quality around you wherever you are with the Pocket monitor to get instant air quality insights.

Pocket PM Air Quality MonitorPocket PM Air Quality Monitor
Prana Air Logo

Cair +

Indoor Air Quality Monitor

Track indoor air quality with advanced connectivity and portability for real-time air quality data.

Cair + Indoor Air Quality MonitorCair + Indoor Air Quality Monitor