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Portland Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-08-24 05:39:44 PM (Local Time)

location image
Live AQI
51(AQI-US)
Air Quality is
Moderate
pm10 :  24 µg/m³
PM2.5 :  10 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi moderate level.webp in Portland
partly cloudy

31 °C

Partly Cloudy
Humidity
Humidity38 %

Wind Speed
Wind Speed7 km/h

UV Index
UV Index5
Last Updated: 2025-08-24 05:39:44 PM (Local Time)


Map

Portland

Major Air Pollutants

Portland

AQI Graph

Historical Air Quality Data

Portland

Portland
AQI
.
23-08-2025Time24-08-2025
38
Min.at 7:09 PM on 23rd Aug
48
Max.at 4:09 PM on 24th Aug

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Portland, Oregon, United States

Year
.
AQI


Annual AQI Trends

2020
37AQI
2021
31AQI
-16%
Fall
2022
29AQI
-6%
Fall
2023
24AQI
-17%
Fall
2024
23AQI
-4%
Fall
2025
25AQI
9%
Rise
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
-7%
Fall (Improved AQI)

Most & Least Polluted Months

Most PollutedSeptember, 2020112AQI

Least PollutedMay, 202215AQI

* 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.(%)
Moderate
54
10
22
18
82
Moderate
55
12
24
18
82
Good
42
8
24
18
83
Moderate
52
9
23
18
83
Moderate
53
10
24
19
81
Moderate
53
10
25
19
81
Moderate
53
10
24
19
81
Moderate
55
12
22
18
83
Moderate
52
10
27
18
83

United States's Metro Cities

Air Quality Index

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

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 On
  • Car Filter
    Car FilterMust
  • N95 Mask
    N95 MaskMust
  • Stay Indoor
    Stay IndoorMust


Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Portland

  • asthma due to air pollution in PortlandAsthma
  • heart due to air pollution in PortlandHeart Issues
  • allergy due to air pollution in PortlandAllergies
  • sinus due to air pollution in PortlandSinus
  • flu due to air pollution in PortlandCold/Flu
  • copd due to air pollution in PortlandChronic (COPD)
asthma due to air pollution in Portland

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.

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.

Portland'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 Portland
Mobile App

Empower Your Decisions with Reliable Data

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 Portland

Frequently Asked Questions About Air Quality

What is the current AQI level in Portland?

The current real-time AQI level in Portland is 51 (Moderate). This was last updated 2025-08-24 05:39:44 PM (Local Time).

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

The best AQI level was 38 (Good) at 7:09 PM, Aug 23, 2025 (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 48 (Good) at 4:09 PM (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 48 at 4:09 PM (Local Time), lowest 38 at 7:09 PM, Aug 23, 2025 (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.