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Washington Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-11-28 06:28:42 AM (Local Time)

location image
Live AQI
23(AQI-US)
Air Quality is
Good
pm10 :  9 µg/m³
PM2.5 :  4 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in Washington
light rain

4 °C

Light rain
Humidity
Humidity93 %
Wind Speed
Wind Speed4 km/h
UV Index
UV Index0
Last Updated: 2025-11-28 06:28:42 AM (Local Time)
Map

Washington

Major Air Pollutants

Washington

PM2.5's Icon

Particulate Matter(PM2.5)

4µg/m³

PM10's Icon

Particulate Matter(PM10)

9µg/m³

CO's Icon

Carbon Monoxide(CO)

217ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

10ppb

O3's Icon

Ozone(O3)

20ppb

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AQI Graph

Historical Air Quality Data

Washington

24 Hours
AQI
Washington
AQI
.
26-11-2025Time27-11-2025
24
Min.at 2:04 PM on 27th Nov
43
Max.at 2:04 AM on 27th Nov

Want air quality data?

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Washington, United States

AQI
Year
.
AQI

Annual AQI Trends

2020
30AQI
2021
25AQI
-17%
Fall
2022
27AQI
8%
Rise
2023
26AQI
-4%
Fall
2024
23AQI
-12%
Fall
2025
29AQI
26%
Rise
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
0%
No Change

Most & Least Polluted Months

Most PollutedSeptember, 202078AQI
Least PollutedMay, 202215AQI

* This data analysis is from year 2020 - 2025

Washington's Cities

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Good
16
3
8
10
96
Good
33
6
16
4
93
Good
15
3
5
10
100
Good
33
6
10
10
86
Good
17
3
3
11
83
Good
33
6
10
11
77
Good
11
2
9
8
79
Good
17
3
9
9
100
Good
17
3
7
7
86
Good
11
2
10
11
100
Good
11
2
11
3
92
Good
28
5
10
3
96
Good
17
3
10
6
86
Good
39
7
11
4
93
Good
44
8
9
2
92
Good
22
4
10
6
92
Good
11
2
5
8
87
Good
33
6
8
10
100
Good
17
3
16
6
92
Good
11
2
7
3
90
Good
33
6
9
9
77
Good
22
4
7
11
89
Good
33
6
8
10
100
Good
17
3
5
7
86
Good
33
6
9
10
86
Good
17
3
10
10
96
Good
22
4
10
3
100
Good
33
6
10
9
77
Moderate
58
13
13
3
96
Moderate
53
10
12
2
100
Good
11
2
8
10
93
Good
11
2
5
8
87
Good
17
3
5
8
87
Good
44
8
8
10
100
Good
39
7
11
4
93
Good
33
6
6
11
77
Good
11
2
7
7
86
Good
22
4
5
11
87
Good
22
4
10
4
97
Good
17
3
8
10
100
Good
22
4
16
6
92
Good
17
3
8
9
97
Good
17
3
5
11
86
Good
17
3
9
11
77
Good
17
3
4
10
96
Good
30
6
6
2
96
Good
17
3
14
6
86
Good
28
5
9
8
97
Good
17
3
8
9
86
Good
17
3
6
5
89
Good
22
4
12
3
100
Good
11
2
3
4
89
Good
11
2
8
10
93
Good
33
6
14
4
97
Good
28
5
10
3
96
Good
17
3
5
12
100
Good
28
5
7
11
77
Good
11
2
3
3
89
Good
17
3
9
9
100
Good
17
3
7
4
89
Good
22
4
6
12
100
Good
37
7
13
4
93
Good
39
7
12
4
93
Good
17
3
8
5
89
Good
22
4
8
11
89
Good
17
3
3
5
89
Good
17
3
9
9
100
Good
33
6
10
11
83
Good
28
5
7
2
96
Good
22
4
10
11
83
Good
24
4
16
7
88
Good
11
2
3
5
89
Good
33
6
14
3
93
Good
30
6
6
3
92
Good
25
4
4
11
82
Good
17
3
3
11
83
Good
11
2
3
5
89

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

13

temp.0°C
hum.47%
Los Angeles City AQI

Los Angeles

14

temp.27°C
hum.15%
Minneapolis City AQI

Minneapolis

21

temp.-3°C
hum.63%
Nashville City AQI

Nashville

17

temp.9°C
hum.25%
New Orleans City AQI

New Orleans

11

temp.16°C
hum.28%
New York City City AQI

New York City

30

temp.6°C
hum.35%
San Francisco City AQI

San Francisco

74

temp.13°C
hum.72%
Washington City AQI

Washington

17

temp.5°C
hum.40%

Air Quality Calendar 2025

Washington

2025
AQI
January
1 Jan
34
2 Jan
32
3 Jan
25
4 Jan
25
5 Jan
24
6 Jan
22
7 Jan
28
8 Jan
28
9 Jan
28
10 Jan
28
11 Jan
24
12 Jan
32
13 Jan
34
14 Jan
37
15 Jan
39
16 Jan
34
17 Jan
33
18 Jan
37
19 Jan
40
20 Jan
37
21 Jan
43
22 Jan
47
23 Jan
48
24 Jan
41
25 Jan
34
26 Jan
40
27 Jan
44
28 Jan
47
29 Jan
51
30 Jan
51
31 Jan
38
February
1 Feb
21
2 Feb
23
3 Feb
24
4 Feb
25
5 Feb
24
6 Feb
27
7 Feb
27
8 Feb
30
9 Feb
35
10 Feb
28
11 Feb
27
12 Feb
34
13 Feb
29
14 Feb
29
15 Feb
29
16 Feb
28
17 Feb
29
18 Feb
27
19 Feb
25
20 Feb
23
21 Feb
27
22 Feb
27
23 Feb
21
24 Feb
22
25 Feb
19
26 Feb
24
27 Feb
27
28 Feb
30
March
1 Mar
33
2 Mar
31
3 Mar
23
4 Mar
23
5 Mar
21
6 Mar
21
7 Mar
25
8 Mar
24
9 Mar
23
10 Mar
19
11 Mar
21
12 Mar
20
13 Mar
18
14 Mar
18
15 Mar
18
16 Mar
17
17 Mar
19
18 Mar
17
19 Mar
19
20 Mar
16
21 Mar
17
22 Mar
17
23 Mar
17
24 Mar
17
25 Mar
22
26 Mar
24
27 Mar
19
28 Mar
17
29 Mar
17
30 Mar
22
31 Mar
18
April
1 Apr
19
2 Apr
20
3 Apr
20
4 Apr
25
5 Apr
27
6 Apr
27
7 Apr
20
8 Apr
15
9 Apr
16
10 Apr
22
11 Apr
18
12 Apr
19
13 Apr
20
14 Apr
24
15 Apr
25
16 Apr
24
17 Apr
21
18 Apr
24
19 Apr
23
20 Apr
19
21 Apr
16
22 Apr
18
23 Apr
22
24 Apr
29
25 Apr
32
26 Apr
33
27 Apr
30
28 Apr
21
29 Apr
17
30 Apr
18
May
1 May
24
2 May
26
3 May
18
4 May
16
5 May
17
6 May
21
7 May
21
8 May
17
9 May
21
10 May
23
11 May
19
12 May
17
13 May
18
14 May
19
15 May
19
16 May
16
17 May
15
18 May
14
19 May
16
20 May
13
21 May
14
22 May
17
23 May
17
24 May
19
25 May
20
26 May
17
27 May
17
28 May
20
29 May
18
30 May
18
31 May
22
June
1 Jun
18
2 Jun
18
3 Jun
20
4 Jun
18
5 Jun
21
6 Jun
22
7 Jun
22
8 Jun
25
9 Jun
29
10 Jun
32
11 Jun
34
12 Jun
35
13 Jun
25
14 Jun
21
15 Jun
22
16 Jun
23
17 Jun
23
18 Jun
18
19 Jun
18
20 Jun
19
21 Jun
16
22 Jun
16
23 Jun
24
24 Jun
38
25 Jun
32
26 Jun
19
27 Jun
15
28 Jun
15
29 Jun
18
30 Jun
21
July
1 Jul
23
2 Jul
21
3 Jul
19
4 Jul
19
5 Jul
26
6 Jul
21
7 Jul
21
8 Jul
23
9 Jul
18
10 Jul
17
11 Jul
21
12 Jul
22
13 Jul
23
14 Jul
21
15 Jul
23
16 Jul
29
17 Jul
35
18 Jul
31
19 Jul
26
20 Jul
26
21 Jul
27
22 Jul
27
23 Jul
27
24 Jul
27
25 Jul
20
26 Jul
20
27 Jul
22
28 Jul
22
29 Jul
24
30 Jul
26
31 Jul
27
August
1 Aug
31
2 Aug
33
3 Aug
32
4 Aug
36
5 Aug
35
6 Aug
27
7 Aug
18
8 Aug
19
9 Aug
20
10 Aug
25
11 Aug
27
12 Aug
27
13 Aug
31
14 Aug
28
15 Aug
21
16 Aug
14
17 Aug
16
18 Aug
21
19 Aug
22
20 Aug
21
21 Aug
23
22 Aug
30
23 Aug
39
24 Aug
45
25 Aug
49
26 Aug
51
27 Aug
50
28 Aug
47
29 Aug
49
30 Aug
45
31 Aug
50
September
1 Sep
47
2 Sep
52
3 Sep
63
4 Sep
61
5 Sep
75
6 Sep
78
7 Sep
54
8 Sep
42
9 Sep
42
10 Sep
49
11 Sep
48
12 Sep
40
13 Sep
45
14 Sep
34
15 Sep
25
16 Sep
31
17 Sep
39
18 Sep
34
19 Sep
38
20 Sep
45
21 Sep
33
22 Sep
27
23 Sep
40
24 Sep
46
25 Sep
44
26 Sep
41
27 Sep
46
28 Sep
46
29 Sep
46
30 Sep
28
October
1 Oct
23
2 Oct
30
3 Oct
43
4 Oct
41
5 Oct
36
6 Oct
46
7 Oct
51
8 Oct
48
9 Oct
49
10 Oct
49
11 Oct
33
12 Oct
34
13 Oct
28
14 Oct
35
15 Oct
43
16 Oct
50
17 Oct
44
18 Oct
51
19 Oct
33
20 Oct
23
21 Oct
29
22 Oct
41
23 Oct
42
24 Oct
42
25 Oct
22
26 Oct
18
27 Oct
22
28 Oct
34
29 Oct
35
30 Oct
40
31 Oct
57
November
1 Nov
42
2 Nov
25
3 Nov
32
4 Nov
37
5 Nov
34
6 Nov
25
7 Nov
25
8 Nov
37
9 Nov
47
10 Nov
46
11 Nov
42
12 Nov
51
13 Nov
49
14 Nov
33
15 Nov
25
16 Nov
36
17 Nov
32
18 Nov
31
19 Nov
35
20 Nov
41
21 Nov
45
22 Nov
44
23 Nov
39
24 Nov
31
25 Nov
36
26 Nov
35
27 Nov
-
28 Nov
-
29 Nov
-
30 Nov
-
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

Health Advice For People Living In

Washington

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

Washington

  • asthma due to air pollution in WashingtonAsthma
  • heart due to air pollution in WashingtonHeart Issues
  • allergy due to air pollution in WashingtonAllergies
  • sinus due to air pollution in WashingtonSinus
  • flu due to air pollution in WashingtonCold/Flu
  • copd due to air pollution in WashingtonChronic (COPD)
asthma due to air pollution in Washington

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.

Hanford, United States

104
Poor
7xabove Standard

2.

Corcoran, United States

89
Moderate
6xabove Standard

3.

Visalia, United States

88
Moderate
6xabove Standard

4.

Choteau, United States

81
Moderate
5xabove Standard

5.

Woodland, United States

79
Moderate
5xabove Standard

6.

Maricopa, United States

79
Moderate
5xabove Standard

7.

Manteca, United States

77
Moderate
5xabove Standard

8.

Bakersfield, United States

77
Moderate
5xabove Standard

9.

Edison, United States

77
Moderate
5xabove Standard

10.

Shafter, United States

75
Moderate
5xabove Standard

Last Updated: 27 Nov 2025, 10:30 PM

AQI City Rankings

Air Quality Solutions For Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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 Washington

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.

Washington'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 Washington
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 Washington

Frequently Asked Questions About Air Quality

What is the current AQI level in Washington?

The current real-time AQI level in Washington is 23 (Good). This was last updated 2025-11-28 06:28:42 AM (Local Time).

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

The best AQI level was 24 (Good) at 2:04 PM (Local Time) during the last 24 hours.

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

The worst AQI level was 43 (Good) at 2:04 AM (Local Time) during the last 24 hours.

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

The AQI levels in Washington have been fluctuating throughout the last 24 hours. The levels have increased by highest 43 at 2:04 AM (Local Time), lowest 24 at 2:04 PM (Local Time).

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

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.

Tashkent’s Air Quality Takes a Sharp Turn: What This Week’s Trend Shows

Tashkent’s Air Quality Takes a Sharp Turn: What This Week’s Trend Shows

21 Nov 2025Navya
Dust vs Smoke: Why Cleaning Your Home Doesn’t Clean Your Air

Dust vs Smoke: Why Cleaning Your Home Doesn’t Clean Your Air

19 Nov 2025Anwesha
Is Delhi suitable for Morning Walks or Runs This November? A Data-Backed Breakdown

Is Delhi suitable for Morning Walks or Runs This November? A Data-Backed Breakdown

18 Nov 2025Navya
Beyond the Smog: What’s Fueling India’s Air Crisis

Beyond the Smog: What’s Fueling India’s Air Crisis

13 Nov 2025Anwesha
New Delhi’s October 2025 AQI: The Worst in Three Years

New Delhi’s October 2025 AQI: The Worst in Three Years

10 Nov 2025Navya
Why Delhi No Longer Panics About Air Pollution

Why Delhi No Longer Panics About Air Pollution

7 Nov 2025Anwesha
Delhi’s Geography: The Invisible Trap Behind Its Worsening Air Pollution

Delhi’s Geography: The Invisible Trap Behind Its Worsening Air Pollution

6 Nov 2025Navya
Delhi’s Silent Killer: 15% of Deaths in 2023 Linked to Air Pollution

Delhi’s Silent Killer: 15% of Deaths in 2023 Linked to Air Pollution

4 Nov 2025Navya
Flawed Cloud Seeding Attempt in Delhi – What is the concept and why did it not work out

Flawed Cloud Seeding Attempt in Delhi – What is the concept and why did it not work out

31 Oct 2025Anwesha
The AQI Divide: Unveiling the True Air Quality in Delhi

The AQI Divide: Unveiling the True Air Quality in Delhi

29 Oct 2025Abhishek
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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.

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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