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Washington Air Quality Index (AQI) | Air Pollution

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

Last Updated: 13 minutes ago (Local Time)

location image
Live AQI
47(AQI-US)
Air Quality is
Good
pm10 :  23 µg/m³
PM2.5 :  10 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in Washington
fog

10 °C

Fog
Humidity
Humidity100 %

Wind Speed
Wind Speed10 km/h

UV Index
UV Index0
Last Updated: 13 minutes ago (Local Time)


Map

Washington

Major Air Pollutants

Washington

AQI Graph

Historical Air Quality Data

Washington

Washington
AQI
.
19-09-2025Time20-09-2025
35
Min.at 6:09 AM on 19th Sep
47
Max.at 4:09 AM on 20th Sep

Download 2024 Annual Data

World Air Quality Report

Globe

Washington's Cities

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Good
20
4
16
12
93
Moderate
64
16
27
13
67
Good
31
5
18
12
85
Good
44
8
20
12
90
Good
33
6
21
14
83
Good
43
8
21
12
88
Good
30
5
18
11
90
Moderate
52
10
23
12
85
Moderate
59
13
27
14
81
Moderate
60
14
23
12
92
Moderate
69
19
27
13
70
Good
44
8
18
12
68
Moderate
54
11
22
16
70
Moderate
52
10
27
14
66
Moderate
54
11
29
15
73
Moderate
64
16
40
11
74
Moderate
55
12
24
15
72
Good
28
5
17
11
90
Good
47
8
23
12
90
Good
47
8
25
16
63
Good
36
6
25
14
69
Good
49
9
26
13
90
Good
42
8
21
13
85
Good
47
8
21
11
94
Moderate
61
14
40
14
82
Good
42
8
20
13
86
Moderate
52
10
23
11
91
Moderate
52
10
27
15
69
Good
40
7
20
12
88
Moderate
55
11
25
14
67
Good
49
9
22
11
75
Good
30
6
18
14
84
Good
26
5
16
10
92
Good
34
6
17
13
91
Good
37
7
18
11
87
Good
50
9
27
13
78
Moderate
54
10
22
12
87
Moderate
58
13
23
14
80
Moderate
57
12
25
11
91
Moderate
65
16
24
14
70
Good
22
4
16
11
88
Good
44
8
18
15
66
Good
22
4
16
11
90
Good
44
8
22
11
94
Good
21
4
16
11
88
Good
21
4
17
11
95
Moderate
67
18
29
13
72
Moderate
52
10
27
14
66
Good
26
5
16
11
90
Good
22
4
16
11
86
Moderate
64
16
24
14
79
Moderate
52
10
26
13
72
Moderate
55
11
21
14
63
Good
45
8
19
15
79
Moderate
54
11
27
15
66
Good
48
9
18
12
69
Good
28
5
15
10
72
Good
49
10
22
12
88
Good
48
9
18
14
64
Good
29
5
18
11
89
Moderate
61
14
25
14
66
Good
46
8
23
11
92
Moderate
57
13
31
14
70
Moderate
56
12
28
13
73
Moderate
61
14
23
15
77
Moderate
51
10
24
12
89
Moderate
61
15
23
15
74
Moderate
52
10
23
12
85
Good
34
6
17
13
86
Moderate
68
18
31
13
69
Moderate
59
13
24
16
81
Moderate
54
11
23
16
68
Good
50
9
24
14
72
Moderate
69
19
29
12
71
Moderate
63
16
24
15
66
Good
38
7
22
14
83
Good
37
7
22
15
79
Moderate
58
13
28
13
70

United States's Metro Cities

Air Quality Index

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.

Washington's AQI Data Analytics Solutions

Air quality data monitoring platforms

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aqi air quality app for Washington
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.


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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 47 (Good). This was last updated 13 minutes ago (Local Time).

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

The best AQI level was 35 (Good) at 6:09 AM, Sep 19, 2025 (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 47 (Good) at 4:09 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 47 at 4:09 AM (Local Time), lowest 35 at 6:09 AM, Sep 19, 2025 (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.