AQI PM2.5 PM10 CO SO2 NO2 O3

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Portland Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-06-09 06:40:57 PM (Local Time)

Live AQI

Air Quality is

Moderate

pm10 : 32 µg/m³

PM2.5 : 15 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

14 °C

Last Updated: 2025-06-09 06:40:57 PM (Local Time)

Map

Portland

Major Air Pollutants
Portland

Particulate Matter(PM2.5)

15µg/m³

Particulate Matter(PM10)

32µg/m³

Carbon Monoxide(CO)

110ppb

Sulfur Dioxide(SO2)

1ppb

Nitrogen Dioxide(NO2)

3ppb

Ozone(O3)

16ppb

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AQI Graph

Historical Air Quality Data
Portland

24 Hours

AQI

Portland

Want air quality data?

AQI Trends - Annual Air Quality Changes
Portland, Maine, United States

AQI

Year

AQI

Annual AQI Trends

2020

35AQI

2021

29AQI

-17%

Fall

2022

27AQI

-7%

Fall

2023

25AQI

-7%

Fall

2024

23AQI

-8%

Fall

2025

26AQI

13%

Rise

Overall Annual Percentage (%) change of AQI in (2020 to 2025)

-5%

Fall (Improved AQI)

Most & Least Polluted Months

Most PollutedSeptember, 202093AQI

Least PollutedMay, 202216AQI

* This data analysis is from year 2020 - 2025

Portland's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Deering Oaks

Moderate

East Deering

Moderate

Oakdale

Moderate

Portland Deering Oaks

Moderate

United States's Metro Cities
Air Quality Index

East Chicago

Los Angeles

Minneapolis

Nashville

New Orleans

New York City

San Francisco

Port Washington

Air Quality Calendar 2025
Portland

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 28	2 Jan 22	3 Jan 23	4 Jan 21
5 Jan 21	6 Jan 22	7 Jan 23	8 Jan 26	9 Jan 26	10 Jan 29	11 Jan 23
12 Jan 30	13 Jan 41	14 Jan 40	15 Jan 39	16 Jan 44	17 Jan 45	18 Jan 33
19 Jan 37	20 Jan 32	21 Jan 47	22 Jan 53	23 Jan 50	24 Jan 44	25 Jan 38
26 Jan 34	27 Jan 30	28 Jan 37	29 Jan 44	30 Jan 53	31 Jan 35	1 Feb 21

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 34	27 Jan 30	28 Jan 37	29 Jan 44	30 Jan 53	31 Jan 35	1 Feb 21
2 Feb 25	3 Feb 28	4 Feb 31	5 Feb 30	6 Feb 32	7 Feb 29	8 Feb 27
9 Feb 37	10 Feb 31	11 Feb 31	12 Feb 26	13 Feb 23	14 Feb 26	15 Feb 31
16 Feb 22	17 Feb 20	18 Feb 21	19 Feb 22	20 Feb 23	21 Feb 22	22 Feb 25
23 Feb 23	24 Feb 30	25 Feb 30	26 Feb 28	27 Feb 25	28 Feb 30	1 Mar 33

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 23	24 Feb 30	25 Feb 30	26 Feb 28	27 Feb 25	28 Feb 30	1 Mar 33
2 Mar 22	3 Mar 26	4 Mar 35	5 Mar 44	6 Mar 50	7 Mar 47	8 Mar 51
9 Mar 51	10 Mar 46	11 Mar 45	12 Mar 35	13 Mar 30	14 Mar 32	15 Mar 27
16 Mar 27	17 Mar 24	18 Mar 22	19 Mar 22	20 Mar 17	21 Mar 16	22 Mar 21
23 Mar 19	24 Mar 20	25 Mar 24	26 Mar 21	27 Mar 18	28 Mar 18	29 Mar 17
30 Mar 23	31 Mar 19	1 Apr 21	2 Apr 18	3 Apr 22	4 Apr 26	5 Apr 20

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 23	31 Mar 19	1 Apr 21	2 Apr 18	3 Apr 22	4 Apr 26	5 Apr 20
6 Apr 26	7 Apr 16	8 Apr 15	9 Apr 18	10 Apr 20	11 Apr 19	12 Apr 17
13 Apr 20	14 Apr 20	15 Apr 25	16 Apr 21	17 Apr 21	18 Apr 23	19 Apr 28
20 Apr 18	21 Apr 16	22 Apr 19	23 Apr 21	24 Apr 25	25 Apr 33	26 Apr 27
27 Apr 20	28 Apr 16	29 Apr 22	30 Apr 19	1 May 25	2 May 27	3 May 20

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 20	28 Apr 16	29 Apr 22	30 Apr 19	1 May 25	2 May 27	3 May 20
4 May 18	5 May 19	6 May 21	7 May 23	8 May 21	9 May 23	10 May 21
11 May 15	12 May 19	13 May 20	14 May 23	15 May 24	16 May 24	17 May 19
18 May 15	19 May 16	20 May 12	21 May 15	22 May 21	23 May 16	24 May 16
25 May 17	26 May 16	27 May 19	28 May 24	29 May 17	30 May 21	31 May 20

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 18	2 Jun 21	3 Jun 23	4 Jun 23	5 Jun 29	6 Jun 30	7 Jun 29
8 Jun 44	9 Jun -	10 Jun -	11 Jun -	12 Jun -	13 Jun -	14 Jun -
15 Jun -	16 Jun -	17 Jun -	18 Jun -	19 Jun -	20 Jun -	21 Jun -
22 Jun -	23 Jun -	24 Jun -	25 Jun -	26 Jun -	27 Jun -	28 Jun -
29 Jun -	30 Jun -	1 Jul -	2 Jul -	3 Jul -	4 Jul -	5 Jul -

Health Advice For People Living In
Portland

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

Solutions for Current AQI

Air PurifierTurn On
Car FilterMust
N95 MaskMust
Stay IndoorMust

Must turn on the air purifier to enjoy fresh air.

Prevent Health Problems: Understand Your Risks

Portland

Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)

Mid. Chances of Asthma

Asthma

Risk of Asthma symptoms is Mid. when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

Limit outdoor activities when AQI is poor.
Clean indoor air with an air purifier to reduce exposure.
Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

Exercise outdoors without a mask.
Stay in smoky areas with strong fumes.

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

Boston, United States

Moderate

5xabove Standard

Chelsea, United States

Moderate

5xabove Standard

Weymouth, United States

Moderate

5xabove Standard

River Rouge, United States

Lynn, United States

Port Huron, United States

Moderate

5xabove Standard

Dearborn, United States

Moderate

5xabove Standard

Brockton, United States

Moderate

5xabove Standard

Detroit, United States

Moderate

5xabove Standard

10.

Milton, United States

Moderate

5xabove Standard

Last Updated: 09 Jun 2025, 11:53 PM

AQI City Rankings

Air Quality Solutions For Portland
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

Monitor the air quality

Air Quality Sensors

Sensors to measure the air quality

Fresh Air Machine

Clean the air you breathe

Car Cabin Filter

Purify the air in your car

N95 Mask

Shield yourself from pollution

air quality solutions for offices for Portland

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

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 Portland

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

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

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

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

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

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

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

air quality solutions for airport for Portland

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

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

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 Portland

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

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

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

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

Portland's AQI Data Analytics Solutions
Air quality data monitoring platforms

Mobile App

Smart TV App

Web Dashboard

API

Widgets

Mobile App

Empower Your Decisions with Reliable Data

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

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Air Quality FAQs
at Portland

Frequently Asked Questions About Air Quality

What is the current AQI level in Portland?

The current real-time AQI level in Portland is 62 (Moderate). This was last updated 2025-06-09 06:40:57 PM (Local Time).

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

The best AQI level was 41 (Good) at 6:09 PM (Local Time) during the last 24 hours.

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

The worst AQI level was 49 (Good) at 1:09 AM (Local Time) during the last 24 hours.

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

The AQI levels in Portland have been fluctuating throughout the last 24 hours. The levels have increased by highest 49 at 1:09 AM (Local Time), lowest 41 at 6:09 PM (Local Time).

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

Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.