What are the current PM10 levels at Seattle, Washington?

The current PM10 levels in Seattle, Washington are 34.376 μg/m3.

What are the current sulfur dioxide (SO2) levels at Seattle, Washington?

The current sulfur dioxide (SO2) levels in Seattle, Washington are 0.392 ppb.

What are the current ozone (O3) levels at Seattle, Washington?

The current ozone (O3) levels at Seattle, Washington is 8.757 ppm.

What are the current nitrogen dioxide (NO2) levels at Seattle, Washington?

The current nitrogen dioxide (NO2) levels at Seattle, Washington is 21.7 ppb.

Real-time air quality index in Seattle, Washington today

Q: What are the current PM2.5 levels in Seattle, Washington?

The measured PM2.5 levels in Seattle, Washington at present are 9.854 μg/m3.

Stay updated with real-time air quality in Seattle, Washington featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Good

Seattle, Washington

Last updated: ... (Local time)

Common air pollutants in Seattle, Washington

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

8.98 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

33.57 μg/m³

155

255

425

605+

Ozone (O₃)

11.40 ppb

201

201+

Sulfur Dioxide (SO₂)

0.40 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

15.56 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Seattle, Washington

Get Live Pollen Counts

Seattle, Washington

Scroll To Air Quality Map

Track live Seattle, Washington air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-22T14:00:00.000Z	54 \| moderate	11.306 \| good	48.182 \| good	6.996 \| good	0.331 \| good	19.843 \| good	0.453 \| good
2025-10-22T15:00:00.000Z	54 \| moderate	11.427 \| good	48.873 \| good	5.919 \| good	0.375 \| good	19.756 \| good	0.453 \| good
2025-10-22T16:00:00.000Z	62 \| moderate	14.897 \| fine	61.921 \| fine	8.83 \| good	0.337 \| good	18.149 \| good	0.483 \| good
2025-10-22T17:00:00.000Z	62 \| moderate	15.39 \| fine	62.616 \| fine	10.76 \| good	0.341 \| good	18.252 \| good	0.483 \| good
2025-10-22T18:00:00.000Z	64 \| moderate	16.068 \| fine	66.173 \| fine	6.325 \| good	0.403 \| good	16.779 \| good	0.384 \| good
2025-10-22T19:00:00.000Z	64 \| moderate	16.09 \| fine	66.14 \| fine	7.51 \| good	0.405 \| good	16.237 \| good	0.384 \| good
2025-10-22T20:00:00.000Z	64 \| moderate	15.687 \| fine	66.167 \| fine	12.627 \| good	0.579 \| good	13.3 \| good	0.369 \| good
2025-10-22T21:00:00.000Z	44 \| good	8.043 \| good	32.527 \| good	18.903 \| good	0.403 \| good	14.901 \| good	0.369 \| good
2025-10-22T22:00:00.000Z	44 \| good	8.195 \| good	32.153 \| good	17.449 \| good	0.399 \| good	13.462 \| good	0.369 \| good
2025-10-22T23:00:00.000Z	44 \| good	7.694 \| good	24.314 \| good	17.34 \| good	0.394 \| good	13.289 \| good	0.198 \| good
2025-10-23T00:00:00.000Z	44 \| good	7.701 \| good	27.334 \| good	21.375 \| good	0.128 \| good	12.088 \| good	0.105 \| good
2025-10-23T01:00:00.000Z	33 \| good	5.827 \| good	26.729 \| good	18.19 \| good	0.21 \| good	10.1 \| good	0.108 \| good
2025-10-23T02:00:00.000Z	22 \| good	4.422 \| good	16.875 \| good	14.49 \| good	0.21 \| good	10.331 \| good	0.108 \| good
2025-10-23T03:00:00.000Z	33 \| good	6.199 \| good	20.704 \| good	16.786 \| good	0.212 \| good	23.395 \| good	0.198 \| good
2025-10-23T04:00:00.000Z	33 \| good	6.384 \| good	22.74 \| good	23.308 \| good	0.213 \| good	23.426 \| good	0.198 \| good
2025-10-23T05:00:00.000Z	38 \| good	6.967 \| good	27.897 \| good	13.601 \| good	0.213 \| good	22.107 \| good	0.202 \| good
2025-10-23T06:00:00.000Z	38 \| good	6.951 \| good	24.247 \| good	11.466 \| good	0.214 \| good	21.85 \| good	0.208 \| good
2025-10-23T07:00:00.000Z	44 \| good	7.85 \| good	21.638 \| good	10.378 \| good	0.126 \| good	20.461 \| good	0.208 \| good
2025-10-23T08:00:00.000Z	44 \| good	7.967 \| good	28.186 \| good	9.636 \| good	0.211 \| good	15.241 \| good	0.203 \| good
2025-10-23T09:00:00.000Z	49 \| good	8.674 \| good	37.429 \| good	9.779 \| good	0.211 \| good	11.993 \| good	0.2 \| good
2025-10-23T10:00:00.000Z	49 \| good	9.392 \| good	26.643 \| good	9.643 \| good	0.211 \| good	9.303 \| good	0.2 \| good
2025-10-23T11:00:00.000Z	52 \| moderate	9.783 \| good	34.911 \| good	13.014 \| good	0.208 \| good	9.303 \| good	0.2 \| good
2025-10-23T12:00:00.000Z	44 \| good	8.374 \| good	35.183 \| good	21.278 \| good	0.221 \| good	10.043 \| good	0.198 \| good
2025-10-23T13:00:00.000Z	52 \| moderate	10.111 \| good	32.455 \| good	12.698 \| good	0.356 \| good	10.561 \| good	0.198 \| good
2025-10-23T14:00:00.000Z	52 \| moderate	9.828 \| good	37.505 \| good	7.893 \| good	0.222 \| good	22.981 \| good	0.287 \| good
2025-10-23T15:00:00.000Z	54 \| moderate	11.081 \| good	30.62 \| good	10.232 \| good	0.308 \| good	19.897 \| good	0.289 \| good
2025-10-23T16:00:00.000Z	54 \| moderate	11.344 \| good	39.436 \| good	4.922 \| good	0.234 \| good	19.067 \| good	0.306 \| good
2025-10-23T17:00:00.000Z	52 \| moderate	10.463 \| good	29.97 \| good	7.239 \| good	0.575 \| good	20.49 \| good	0.298 \| good
2025-10-23T18:00:00.000Z	49 \| good	8.517 \| good	35.029 \| good	11.518 \| good	0.571 \| good	20.467 \| good	0.292 \| good
2025-10-23T19:00:00.000Z	49 \| good	8.791 \| good	34.645 \| good	13.209 \| good	0.483 \| good	21.55 \| good	0.203 \| good
2025-10-23T20:00:00.000Z	44 \| good	7.843 \| good	26.378 \| good	13.339 \| good	0.572 \| good	19.557 \| good	0.197 \| good
2025-10-23T21:00:00.000Z	38 \| good	7.313 \| good	24.502 \| good	11.96 \| good	0.225 \| good	14.251 \| good	0.108 \| good
2025-10-23T22:00:00.000Z	38 \| good	6.603 \| good	25.612 \| good	20.308 \| good	0.395 \| good	15.327 \| good	0.105 \| good
2025-10-23T23:00:00.000Z	33 \| good	6.207 \| good	26.62 \| good	17.661 \| good	0.395 \| good	15.445 \| good	0.105 \| good
2025-10-24T00:00:00.000Z	27 \| good	5.215 \| good	19.225 \| good	17.474 \| good	0.309 \| good	13.101 \| good	0.197 \| good
2025-10-24T01:00:00.000Z	33 \| good	5.907 \| good	23.314 \| good	16.827 \| good	0.309 \| good	13.172 \| good	0.2 \| good
2025-10-24T02:00:00.000Z	33 \| good	5.695 \| good	24.419 \| good	17.98 \| good	0.304 \| good	13.358 \| good	0.197 \| good
2025-10-24T03:00:00.000Z	60 \| moderate	13.954 \| fine	62.605 \| fine	5.125 \| good	0.915 \| good	18.505 \| good	0.252 \| good
2025-10-24T04:00:00.000Z	44 \| good	7.731 \| good	33.337 \| good	13.537 \| good	0.301 \| good	26.353 \| good	0.2 \| good
2025-10-24T05:00:00.000Z	49 \| good	9.228 \| good	47.194 \| good	10.7 \| good	0.484 \| good	18.746 \| good	0.289 \| good
2025-10-24T06:00:00.000Z	52 \| moderate	10.332 \| good	55.825 \| fine	10.389 \| good	0.481 \| good	24.624 \| good	0.289 \| good
2025-10-24T07:00:00.000Z	49 \| good	9.436 \| good	33.784 \| good	10.481 \| good	0.481 \| good	24.471 \| good	0.289 \| good
2025-10-24T08:00:00.000Z	52 \| moderate	9.854 \| good	34.376 \| good	8.757 \| good	0.392 \| good	21.7 \| good	0.286 \| good
2025-10-24T09:00:00.000Z	52 \| moderate	10.254 \| good	34.835 \| good	10.894 \| good	0.307 \| good	16.031 \| good	0.197 \| good
2025-10-24T10:00:00.000Z	52 \| moderate	9.906 \| good	42.213 \| good	13.364 \| good	0.306 \| good	15.8 \| good	0.197 \| good
2025-10-24T11:00:00.000Z	52 \| moderate	9.917 \| good	33.167 \| good	12.86 \| good	0.392 \| good	13.93 \| good	0.197 \| good
2025-10-24T12:00:00.000Z	49 \| good	8.981 \| good	33.567 \| good	11.397 \| good	0.398 \| good	15.564 \| good	0.195 \| good
2025-10-24T13:00:00.000Z	52 \| moderate	10.019 \| good	32.734 \| good	10.3 \| good	0.309 \| good	15.253 \| good	0.195 \| good
2025-10-24T13:00:00.000Z	49 \| good	8.981 \| good	33.567 \| good	11.397 \| good	0.398 \| good	15.564 \| good	0.195 \| good
2025-10-24T10:00:00.000Z	54 \| moderate	10.605 \| good	47.038 \| good	9.394 \| good	0.655 \| good	5.523 \| good	0.168 \| good
2025-10-24T11:00:00.000Z	49 \| good	8.525 \| good	37.596 \| good	10.554 \| good	0.573 \| good	4.325 \| good	0.154 \| good
2025-10-24T12:00:00.000Z	33 \| good	6.167 \| good	26.679 \| good	14.255 \| good	0.49 \| good	3.127 \| good	0.14 \| good
2025-10-24T13:00:00.000Z	22 \| good	4.136 \| good	18.101 \| good	23.454 \| good	0.455 \| good	3.253 \| good	0.135 \| good
2025-10-24T14:00:00.000Z	27 \| good	3.459 \| good	15.237 \| good	28.997 \| good	0.42 \| good	3.38 \| good	0.13 \| good
2025-10-24T15:00:00.000Z	25 \| good	3.587 \| good	15.708 \| good	26.948 \| good	0.384 \| good	3.506 \| good	0.125 \| good
2025-10-24T16:00:00.000Z	24 \| good	2.94 \| good	12.693 \| good	25.902 \| good	0.373 \| good	3.788 \| good	0.126 \| good
2025-10-24T17:00:00.000Z	21 \| good	3.303 \| good	13.995 \| good	22.557 \| good	0.362 \| good	4.069 \| good	0.126 \| good
2025-10-24T18:00:00.000Z	22 \| good	3.705 \| good	15.43 \| good	21.364 \| good	0.35 \| good	4.351 \| good	0.126 \| good
2025-10-24T19:00:00.000Z	22 \| good	3.98 \| good	17.49 \| good	23.685 \| good	0.393 \| good	5.082 \| good	0.13 \| good
2025-10-24T20:00:00.000Z	27 \| good	3.72 \| good	16.322 \| good	29.273 \| good	0.435 \| good	5.813 \| good	0.133 \| good
2025-10-24T21:00:00.000Z	26 \| good	3.27 \| good	13.959 \| good	28.34 \| good	0.478 \| good	6.544 \| good	0.137 \| good
2025-10-24T22:00:00.000Z	29 \| good	3.553 \| good	15.146 \| good	30.515 \| good	0.556 \| good	8.642 \| good	0.152 \| good
2025-10-24T23:00:00.000Z	27 \| good	4.104 \| good	17.705 \| good	28.882 \| good	0.633 \| good	10.74 \| good	0.166 \| good
2025-10-25T00:00:00.000Z	26 \| good	3.602 \| good	15.219 \| good	28.324 \| good	0.71 \| good	12.838 \| good	0.181 \| good
2025-10-25T01:00:00.000Z	26 \| good	3.337 \| good	14.237 \| good	27.856 \| good	0.718 \| good	12.557 \| good	0.187 \| good
2025-10-25T02:00:00.000Z	25 \| good	4.013 \| good	17.443 \| good	27.144 \| good	0.725 \| good	12.276 \| good	0.192 \| good
2025-10-25T03:00:00.000Z	23 \| good	3.945 \| good	17.089 \| good	25.218 \| good	0.732 \| good	11.996 \| good	0.197 \| good
2025-10-25T04:00:00.000Z	29 \| good	3.492 \| good	15.256 \| good	31.074 \| good	0.688 \| good	9.789 \| good	0.184 \| good
2025-10-25T05:00:00.000Z	30 \| good	3.569 \| good	15.473 \| good	31.998 \| good	0.644 \| good	7.582 \| good	0.17 \| good
2025-10-25T06:00:00.000Z	27 \| good	3.776 \| good	16.429 \| good	29.102 \| good	0.6 \| good	5.376 \| good	0.157 \| good
2025-10-25T07:00:00.000Z	25 \| good	3.694 \| good	16 \| good	26.663 \| good	0.53 \| good	4.579 \| good	0.144 \| good
2025-10-25T08:00:00.000Z	24 \| good	3.366 \| good	14.094 \| good	26.406 \| good	0.459 \| good	3.782 \| good	0.131 \| good
2025-10-25T09:00:00.000Z	23 \| good	3.642 \| good	15.129 \| good	25.284 \| good	0.389 \| good	2.984 \| good	0.119 \| good
2025-10-25T10:00:00.000Z	22 \| good	3.8 \| good	15.96 \| good	23.596 \| good	0.401 \| good	2.909 \| good	0.116 \| good
2025-10-25T11:00:00.000Z	22 \| good	3.897 \| good	16.281 \| good	23.555 \| good	0.412 \| good	2.834 \| good	0.114 \| good
2025-10-25T12:00:00.000Z	23 \| good	4.182 \| good	17.966 \| good	25.281 \| good	0.423 \| good	2.759 \| good	0.112 \| good
2025-10-25T13:00:00.000Z	27 \| good	4.591 \| good	20.309 \| good	23.685 \| good	0.461 \| good	4.202 \| good	0.12 \| good
2025-10-25T14:00:00.000Z	33 \| good	6.111 \| good	26.652 \| good	20.747 \| good	0.499 \| good	5.645 \| good	0.129 \| good
2025-10-25T15:00:00.000Z	38 \| good	7.436 \| good	33.001 \| good	17.651 \| good	0.536 \| good	7.088 \| good	0.138 \| good
2025-10-25T16:00:00.000Z	38 \| good	7.104 \| good	31.395 \| good	19.52 \| good	0.503 \| good	6.736 \| good	0.141 \| good
2025-10-25T17:00:00.000Z	27 \| good	4.697 \| good	20.583 \| good	26.127 \| good	0.47 \| good	6.383 \| good	0.144 \| good
2025-10-25T18:00:00.000Z	33 \| good	5.801 \| good	25.256 \| good	20.191 \| good	0.437 \| good	6.031 \| good	0.148 \| good
2025-10-25T19:00:00.000Z	33 \| good	6.201 \| good	26.978 \| good	17.705 \| good	0.406 \| good	5.059 \| good	0.14 \| good
2025-10-25T20:00:00.000Z	33 \| good	6.279 \| good	27.477 \| good	14.826 \| good	0.374 \| good	4.086 \| good	0.133 \| good
2025-10-25T21:00:00.000Z	38 \| good	6.732 \| good	29.738 \| good	19.632 \| good	0.343 \| good	3.114 \| good	0.126 \| good
2025-10-25T22:00:00.000Z	27 \| good	5.35 \| good	23.011 \| good	28.733 \| good	0.325 \| good	3.164 \| good	0.126 \| good
2025-10-25T23:00:00.000Z	29 \| good	4.465 \| good	19.379 \| good	30.517 \| good	0.307 \| good	3.214 \| good	0.126 \| good
2025-10-26T00:00:00.000Z	27 \| good	4.539 \| good	19.667 \| good	27.938 \| good	0.289 \| good	3.264 \| good	0.127 \| good
2025-10-26T01:00:00.000Z	33 \| good	6.055 \| good	26.444 \| good	25.187 \| good	0.306 \| good	3.505 \| good	0.13 \| good
2025-10-26T02:00:00.000Z	38 \| good	6.536 \| good	28.405 \| good	24.663 \| good	0.322 \| good	3.746 \| good	0.133 \| good
2025-10-26T03:00:00.000Z	26 \| good	4.388 \| good	19.098 \| good	27.725 \| good	0.338 \| good	3.987 \| good	0.137 \| good
2025-10-26T04:00:00.000Z	31 \| good	2.773 \| good	11.699 \| good	34.457 \| good	0.383 \| good	3.338 \| good	0.132 \| good
2025-10-26T05:00:00.000Z	31 \| good	2.605 \| good	10.821 \| good	33.431 \| good	0.428 \| good	2.689 \| good	0.127 \| good
2025-10-26T06:00:00.000Z	37 \| good	1.996 \| good	2.325 \| good	39.924 \| good	0.475 \| good	2.049 \| good	0.122 \| good
2025-10-26T07:00:00.000Z	33 \| good	2.203 \| good	9.086 \| good	35.917 \| good	0.439 \| good	1.763 \| good	0.116 \| good
2025-10-26T08:00:00.000Z	33 \| good	1.301 \| good	5.421 \| good	35.918 \| good	0.405 \| good	1.485 \| good	0.111 \| good
2025-10-26T09:00:00.000Z	33 \| good	1.077 \| good	4.243 \| good	35.863 \| good	0.371 \| good	1.208 \| good	0.106 \| good

Seattle

Empower business decisions with accurate air quality data

Seattle, Washington air quality map: Real-time AQI near you

0.28ppm

How accurate is Washington, USA air quality data?

Air quality measurements for Washington, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How frequently is the air quality data for Seattle, Washington updated?

Air quality data for Seattle, Washington is updated on an hourly basis.

When did Seattle, Washington experience the worst air quality in the last 24 hours?

The worst air quality in Seattle, Washington was recorded at 03:00:00 on 2025-10-24.

When did Seattle, Washington have its best air quality in the last 24 hours?

The best air quality in Seattle, Washington was recorded at 12:00:00 on 2025-10-24.

What is the real-time air quality index for Seattle, Washington?

The real-time air quality index in Seattle, Washington is 52, currently categorized as Moderate.

Which pollutant is found most often in Seattle, Washington?

The most common pollutant in Seattle, Washington is PM2.5.

What can I do if the air quality in Seattle, Washington is poor?

If the air quality in Seattle, Washington is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Seattle, Washington?

The measured PM_2.5 levels in Seattle, Washington at present are 9.854 μg/m³.

What are the current PM₁₀ levels at Seattle, Washington?

The current PM₁₀ levels in Seattle, Washington are 34.376 μg/m³.

What are the current carbon monoxide (CO) levels at Seattle, Washington?

The current carbon monoxide (CO) level in Seattle, Washington is 0.286 ppm.

What are the current sulfur dioxide (SO₂) levels at Seattle, Washington?

The current sulfur dioxide (SO₂) levels in Seattle, Washington are 0.392 ppb.

What are the current ozone (O₃) levels at Seattle, Washington?

The current ozone (O₃) levels at Seattle, Washington is 8.757 ppm.

What are the current nitrogen dioxide (NO₂) levels at Seattle, Washington?

The current nitrogen dioxide (NO₂) levels at Seattle, Washington is 21.7 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-22T14:00:00.000Z	54 \| moderate	11.306 \| good	48.182 \| good	6.996 \| good	0.331 \| good	19.843 \| good	0.453 \| good
2025-10-22T15:00:00.000Z	54 \| moderate	11.427 \| good	48.873 \| good	5.919 \| good	0.375 \| good	19.756 \| good	0.453 \| good
2025-10-22T16:00:00.000Z	62 \| moderate	14.897 \| fine	61.921 \| fine	8.83 \| good	0.337 \| good	18.149 \| good	0.483 \| good
2025-10-22T17:00:00.000Z	62 \| moderate	15.39 \| fine	62.616 \| fine	10.76 \| good	0.341 \| good	18.252 \| good	0.483 \| good
2025-10-22T18:00:00.000Z	64 \| moderate	16.068 \| fine	66.173 \| fine	6.325 \| good	0.403 \| good	16.779 \| good	0.384 \| good
2025-10-22T19:00:00.000Z	64 \| moderate	16.09 \| fine	66.14 \| fine	7.51 \| good	0.405 \| good	16.237 \| good	0.384 \| good
2025-10-22T20:00:00.000Z	64 \| moderate	15.687 \| fine	66.167 \| fine	12.627 \| good	0.579 \| good	13.3 \| good	0.369 \| good
2025-10-22T21:00:00.000Z	44 \| good	8.043 \| good	32.527 \| good	18.903 \| good	0.403 \| good	14.901 \| good	0.369 \| good
2025-10-22T22:00:00.000Z	44 \| good	8.195 \| good	32.153 \| good	17.449 \| good	0.399 \| good	13.462 \| good	0.369 \| good
2025-10-22T23:00:00.000Z	44 \| good	7.694 \| good	24.314 \| good	17.34 \| good	0.394 \| good	13.289 \| good	0.198 \| good
2025-10-23T00:00:00.000Z	44 \| good	7.701 \| good	27.334 \| good	21.375 \| good	0.128 \| good	12.088 \| good	0.105 \| good
2025-10-23T01:00:00.000Z	33 \| good	5.827 \| good	26.729 \| good	18.19 \| good	0.21 \| good	10.1 \| good	0.108 \| good
2025-10-23T02:00:00.000Z	22 \| good	4.422 \| good	16.875 \| good	14.49 \| good	0.21 \| good	10.331 \| good	0.108 \| good
2025-10-23T03:00:00.000Z	33 \| good	6.199 \| good	20.704 \| good	16.786 \| good	0.212 \| good	23.395 \| good	0.198 \| good
2025-10-23T04:00:00.000Z	33 \| good	6.384 \| good	22.74 \| good	23.308 \| good	0.213 \| good	23.426 \| good	0.198 \| good
2025-10-23T05:00:00.000Z	38 \| good	6.967 \| good	27.897 \| good	13.601 \| good	0.213 \| good	22.107 \| good	0.202 \| good
2025-10-23T06:00:00.000Z	38 \| good	6.951 \| good	24.247 \| good	11.466 \| good	0.214 \| good	21.85 \| good	0.208 \| good
2025-10-23T07:00:00.000Z	44 \| good	7.85 \| good	21.638 \| good	10.378 \| good	0.126 \| good	20.461 \| good	0.208 \| good
2025-10-23T08:00:00.000Z	44 \| good	7.967 \| good	28.186 \| good	9.636 \| good	0.211 \| good	15.241 \| good	0.203 \| good
2025-10-23T09:00:00.000Z	49 \| good	8.674 \| good	37.429 \| good	9.779 \| good	0.211 \| good	11.993 \| good	0.2 \| good
2025-10-23T10:00:00.000Z	49 \| good	9.392 \| good	26.643 \| good	9.643 \| good	0.211 \| good	9.303 \| good	0.2 \| good
2025-10-23T11:00:00.000Z	52 \| moderate	9.783 \| good	34.911 \| good	13.014 \| good	0.208 \| good	9.303 \| good	0.2 \| good
2025-10-23T12:00:00.000Z	44 \| good	8.374 \| good	35.183 \| good	21.278 \| good	0.221 \| good	10.043 \| good	0.198 \| good
2025-10-23T13:00:00.000Z	52 \| moderate	10.111 \| good	32.455 \| good	12.698 \| good	0.356 \| good	10.561 \| good	0.198 \| good
2025-10-23T14:00:00.000Z	52 \| moderate	9.828 \| good	37.505 \| good	7.893 \| good	0.222 \| good	22.981 \| good	0.287 \| good
2025-10-23T15:00:00.000Z	54 \| moderate	11.081 \| good	30.62 \| good	10.232 \| good	0.308 \| good	19.897 \| good	0.289 \| good
2025-10-23T16:00:00.000Z	54 \| moderate	11.344 \| good	39.436 \| good	4.922 \| good	0.234 \| good	19.067 \| good	0.306 \| good
2025-10-23T17:00:00.000Z	52 \| moderate	10.463 \| good	29.97 \| good	7.239 \| good	0.575 \| good	20.49 \| good	0.298 \| good
2025-10-23T18:00:00.000Z	49 \| good	8.517 \| good	35.029 \| good	11.518 \| good	0.571 \| good	20.467 \| good	0.292 \| good
2025-10-23T19:00:00.000Z	49 \| good	8.791 \| good	34.645 \| good	13.209 \| good	0.483 \| good	21.55 \| good	0.203 \| good
2025-10-23T20:00:00.000Z	44 \| good	7.843 \| good	26.378 \| good	13.339 \| good	0.572 \| good	19.557 \| good	0.197 \| good
2025-10-23T21:00:00.000Z	38 \| good	7.313 \| good	24.502 \| good	11.96 \| good	0.225 \| good	14.251 \| good	0.108 \| good
2025-10-23T22:00:00.000Z	38 \| good	6.603 \| good	25.612 \| good	20.308 \| good	0.395 \| good	15.327 \| good	0.105 \| good
2025-10-23T23:00:00.000Z	33 \| good	6.207 \| good	26.62 \| good	17.661 \| good	0.395 \| good	15.445 \| good	0.105 \| good
2025-10-24T00:00:00.000Z	27 \| good	5.215 \| good	19.225 \| good	17.474 \| good	0.309 \| good	13.101 \| good	0.197 \| good
2025-10-24T01:00:00.000Z	33 \| good	5.907 \| good	23.314 \| good	16.827 \| good	0.309 \| good	13.172 \| good	0.2 \| good
2025-10-24T02:00:00.000Z	33 \| good	5.695 \| good	24.419 \| good	17.98 \| good	0.304 \| good	13.358 \| good	0.197 \| good
2025-10-24T03:00:00.000Z	60 \| moderate	13.954 \| fine	62.605 \| fine	5.125 \| good	0.915 \| good	18.505 \| good	0.252 \| good
2025-10-24T04:00:00.000Z	44 \| good	7.731 \| good	33.337 \| good	13.537 \| good	0.301 \| good	26.353 \| good	0.2 \| good
2025-10-24T05:00:00.000Z	49 \| good	9.228 \| good	47.194 \| good	10.7 \| good	0.484 \| good	18.746 \| good	0.289 \| good
2025-10-24T06:00:00.000Z	52 \| moderate	10.332 \| good	55.825 \| fine	10.389 \| good	0.481 \| good	24.624 \| good	0.289 \| good
2025-10-24T07:00:00.000Z	49 \| good	9.436 \| good	33.784 \| good	10.481 \| good	0.481 \| good	24.471 \| good	0.289 \| good
2025-10-24T08:00:00.000Z	52 \| moderate	9.854 \| good	34.376 \| good	8.757 \| good	0.392 \| good	21.7 \| good	0.286 \| good
2025-10-24T09:00:00.000Z	52 \| moderate	10.254 \| good	34.835 \| good	10.894 \| good	0.307 \| good	16.031 \| good	0.197 \| good
2025-10-24T10:00:00.000Z	52 \| moderate	9.906 \| good	42.213 \| good	13.364 \| good	0.306 \| good	15.8 \| good	0.197 \| good
2025-10-24T11:00:00.000Z	52 \| moderate	9.917 \| good	33.167 \| good	12.86 \| good	0.392 \| good	13.93 \| good	0.197 \| good
2025-10-24T12:00:00.000Z	49 \| good	8.981 \| good	33.567 \| good	11.397 \| good	0.398 \| good	15.564 \| good	0.195 \| good
2025-10-24T13:00:00.000Z	52 \| moderate	10.019 \| good	32.734 \| good	10.3 \| good	0.309 \| good	15.253 \| good	0.195 \| good
2025-10-24T13:00:00.000Z	49 \| good	8.981 \| good	33.567 \| good	11.397 \| good	0.398 \| good	15.564 \| good	0.195 \| good
2025-10-24T10:00:00.000Z	54 \| moderate	10.605 \| good	47.038 \| good	9.394 \| good	0.655 \| good	5.523 \| good	0.168 \| good
2025-10-24T11:00:00.000Z	49 \| good	8.525 \| good	37.596 \| good	10.554 \| good	0.573 \| good	4.325 \| good	0.154 \| good
2025-10-24T12:00:00.000Z	33 \| good	6.167 \| good	26.679 \| good	14.255 \| good	0.49 \| good	3.127 \| good	0.14 \| good
2025-10-24T13:00:00.000Z	22 \| good	4.136 \| good	18.101 \| good	23.454 \| good	0.455 \| good	3.253 \| good	0.135 \| good
2025-10-24T14:00:00.000Z	27 \| good	3.459 \| good	15.237 \| good	28.997 \| good	0.42 \| good	3.38 \| good	0.13 \| good
2025-10-24T15:00:00.000Z	25 \| good	3.587 \| good	15.708 \| good	26.948 \| good	0.384 \| good	3.506 \| good	0.125 \| good
2025-10-24T16:00:00.000Z	24 \| good	2.94 \| good	12.693 \| good	25.902 \| good	0.373 \| good	3.788 \| good	0.126 \| good
2025-10-24T17:00:00.000Z	21 \| good	3.303 \| good	13.995 \| good	22.557 \| good	0.362 \| good	4.069 \| good	0.126 \| good
2025-10-24T18:00:00.000Z	22 \| good	3.705 \| good	15.43 \| good	21.364 \| good	0.35 \| good	4.351 \| good	0.126 \| good
2025-10-24T19:00:00.000Z	22 \| good	3.98 \| good	17.49 \| good	23.685 \| good	0.393 \| good	5.082 \| good	0.13 \| good
2025-10-24T20:00:00.000Z	27 \| good	3.72 \| good	16.322 \| good	29.273 \| good	0.435 \| good	5.813 \| good	0.133 \| good
2025-10-24T21:00:00.000Z	26 \| good	3.27 \| good	13.959 \| good	28.34 \| good	0.478 \| good	6.544 \| good	0.137 \| good
2025-10-24T22:00:00.000Z	29 \| good	3.553 \| good	15.146 \| good	30.515 \| good	0.556 \| good	8.642 \| good	0.152 \| good
2025-10-24T23:00:00.000Z	27 \| good	4.104 \| good	17.705 \| good	28.882 \| good	0.633 \| good	10.74 \| good	0.166 \| good
2025-10-25T00:00:00.000Z	26 \| good	3.602 \| good	15.219 \| good	28.324 \| good	0.71 \| good	12.838 \| good	0.181 \| good
2025-10-25T01:00:00.000Z	26 \| good	3.337 \| good	14.237 \| good	27.856 \| good	0.718 \| good	12.557 \| good	0.187 \| good
2025-10-25T02:00:00.000Z	25 \| good	4.013 \| good	17.443 \| good	27.144 \| good	0.725 \| good	12.276 \| good	0.192 \| good
2025-10-25T03:00:00.000Z	23 \| good	3.945 \| good	17.089 \| good	25.218 \| good	0.732 \| good	11.996 \| good	0.197 \| good
2025-10-25T04:00:00.000Z	29 \| good	3.492 \| good	15.256 \| good	31.074 \| good	0.688 \| good	9.789 \| good	0.184 \| good
2025-10-25T05:00:00.000Z	30 \| good	3.569 \| good	15.473 \| good	31.998 \| good	0.644 \| good	7.582 \| good	0.17 \| good
2025-10-25T06:00:00.000Z	27 \| good	3.776 \| good	16.429 \| good	29.102 \| good	0.6 \| good	5.376 \| good	0.157 \| good
2025-10-25T07:00:00.000Z	25 \| good	3.694 \| good	16 \| good	26.663 \| good	0.53 \| good	4.579 \| good	0.144 \| good
2025-10-25T08:00:00.000Z	24 \| good	3.366 \| good	14.094 \| good	26.406 \| good	0.459 \| good	3.782 \| good	0.131 \| good
2025-10-25T09:00:00.000Z	23 \| good	3.642 \| good	15.129 \| good	25.284 \| good	0.389 \| good	2.984 \| good	0.119 \| good
2025-10-25T10:00:00.000Z	22 \| good	3.8 \| good	15.96 \| good	23.596 \| good	0.401 \| good	2.909 \| good	0.116 \| good
2025-10-25T11:00:00.000Z	22 \| good	3.897 \| good	16.281 \| good	23.555 \| good	0.412 \| good	2.834 \| good	0.114 \| good
2025-10-25T12:00:00.000Z	23 \| good	4.182 \| good	17.966 \| good	25.281 \| good	0.423 \| good	2.759 \| good	0.112 \| good
2025-10-25T13:00:00.000Z	27 \| good	4.591 \| good	20.309 \| good	23.685 \| good	0.461 \| good	4.202 \| good	0.12 \| good
2025-10-25T14:00:00.000Z	33 \| good	6.111 \| good	26.652 \| good	20.747 \| good	0.499 \| good	5.645 \| good	0.129 \| good
2025-10-25T15:00:00.000Z	38 \| good	7.436 \| good	33.001 \| good	17.651 \| good	0.536 \| good	7.088 \| good	0.138 \| good
2025-10-25T16:00:00.000Z	38 \| good	7.104 \| good	31.395 \| good	19.52 \| good	0.503 \| good	6.736 \| good	0.141 \| good
2025-10-25T17:00:00.000Z	27 \| good	4.697 \| good	20.583 \| good	26.127 \| good	0.47 \| good	6.383 \| good	0.144 \| good
2025-10-25T18:00:00.000Z	33 \| good	5.801 \| good	25.256 \| good	20.191 \| good	0.437 \| good	6.031 \| good	0.148 \| good
2025-10-25T19:00:00.000Z	33 \| good	6.201 \| good	26.978 \| good	17.705 \| good	0.406 \| good	5.059 \| good	0.14 \| good
2025-10-25T20:00:00.000Z	33 \| good	6.279 \| good	27.477 \| good	14.826 \| good	0.374 \| good	4.086 \| good	0.133 \| good
2025-10-25T21:00:00.000Z	38 \| good	6.732 \| good	29.738 \| good	19.632 \| good	0.343 \| good	3.114 \| good	0.126 \| good
2025-10-25T22:00:00.000Z	27 \| good	5.35 \| good	23.011 \| good	28.733 \| good	0.325 \| good	3.164 \| good	0.126 \| good
2025-10-25T23:00:00.000Z	29 \| good	4.465 \| good	19.379 \| good	30.517 \| good	0.307 \| good	3.214 \| good	0.126 \| good
2025-10-26T00:00:00.000Z	27 \| good	4.539 \| good	19.667 \| good	27.938 \| good	0.289 \| good	3.264 \| good	0.127 \| good
2025-10-26T01:00:00.000Z	33 \| good	6.055 \| good	26.444 \| good	25.187 \| good	0.306 \| good	3.505 \| good	0.13 \| good
2025-10-26T02:00:00.000Z	38 \| good	6.536 \| good	28.405 \| good	24.663 \| good	0.322 \| good	3.746 \| good	0.133 \| good
2025-10-26T03:00:00.000Z	26 \| good	4.388 \| good	19.098 \| good	27.725 \| good	0.338 \| good	3.987 \| good	0.137 \| good
2025-10-26T04:00:00.000Z	31 \| good	2.773 \| good	11.699 \| good	34.457 \| good	0.383 \| good	3.338 \| good	0.132 \| good
2025-10-26T05:00:00.000Z	31 \| good	2.605 \| good	10.821 \| good	33.431 \| good	0.428 \| good	2.689 \| good	0.127 \| good
2025-10-26T06:00:00.000Z	37 \| good	1.996 \| good	2.325 \| good	39.924 \| good	0.475 \| good	2.049 \| good	0.122 \| good
2025-10-26T07:00:00.000Z	33 \| good	2.203 \| good	9.086 \| good	35.917 \| good	0.439 \| good	1.763 \| good	0.116 \| good
2025-10-26T08:00:00.000Z	33 \| good	1.301 \| good	5.421 \| good	35.918 \| good	0.405 \| good	1.485 \| good	0.111 \| good
2025-10-26T09:00:00.000Z	33 \| good	1.077 \| good	4.243 \| good	35.863 \| good	0.371 \| good	1.208 \| good	0.106 \| good

Real-time air quality index in Seattle, Washington today

Common air pollutants in Seattle, Washington

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Seattle, Washington air quality forecast and history

Empower business decisions with accurate air quality data

Seattle, Washington air quality map: Real-time AQI near you

Air quality in nearby cities

Mercer Island, Washington

Bellevue, Washington

White Center, Washington

Kirkland, Washington

Bainbridge Island, Washington

Bryn MawrSkyway, Washington

How accurate is Washington, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently is the air quality data for Seattle, Washington updated?

When did Seattle, Washington experience the worst air quality in the last 24 hours?

When did Seattle, Washington have its best air quality in the last 24 hours?

What is the real-time air quality index for Seattle, Washington?

Which pollutant is found most often in Seattle, Washington?

What can I do if the air quality in Seattle, Washington is poor?

What are the current PM2.5 levels in Seattle, Washington?

What are the current PM10 levels at Seattle, Washington?

What are the current carbon monoxide (CO) levels at Seattle, Washington?

What are the current sulfur dioxide (SO2) levels at Seattle, Washington?

What are the current ozone (O3) levels at Seattle, Washington?

What are the current nitrogen dioxide (NO2) levels at Seattle, Washington?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in Seattle, Washington?

What are the current PM₁₀ levels at Seattle, Washington?

What are the current sulfur dioxide (SO₂) levels at Seattle, Washington?

What are the current ozone (O₃) levels at Seattle, Washington?

What are the current nitrogen dioxide (NO₂) levels at Seattle, Washington?