What are the current PM10 levels at Seattle, Washington?

The current PM10 levels in Seattle, Washington are 25.163 μg/m3.

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

The current sulfur dioxide (SO2) levels in Seattle, Washington are 0.197 ppb.

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

The current ozone (O3) levels at Seattle, Washington is 10.197 ppm.

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

The current nitrogen dioxide (NO2) levels at Seattle, Washington is 15.06 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 6.185 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)

6.18 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

25.16 μg/m³

155

255

425

605+

Ozone (O₃)

10.20 ppb

201

201+

Sulfur Dioxide (SO₂)

0.20 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

15.06 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 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
2025-12-11T13:00:00.000Z	31 \| good	0.9 \| good	3.593 \| good	34.372 \| good	0.222 \| good	2.031 \| good	0.1 \| good
2025-12-11T14:00:00.000Z	30 \| good	2.608 \| good	10.922 \| good	32.23 \| good	0.276 \| good	3.892 \| good	0.1 \| good
2025-12-11T15:00:00.000Z	26 \| good	3.225 \| good	14.018 \| good	27.514 \| good	0.195 \| good	4.074 \| good	0.1 \| good
2025-12-11T16:00:00.000Z	28 \| good	2.898 \| good	12.768 \| good	30.149 \| good	0.218 \| good	5.51 \| good	0.101 \| good
2025-12-11T17:00:00.000Z	24 \| good	3.244 \| good	13.675 \| good	26.456 \| good	0.214 \| good	5.68 \| good	0.101 \| good
2025-12-11T18:00:00.000Z	21 \| good	2.578 \| good	10.43 \| good	22.529 \| good	0.213 \| good	6.324 \| good	0.185 \| good
2025-12-11T19:00:00.000Z	20 \| good	2.25 \| good	8.85 \| good	21.955 \| good	0.255 \| good	7.011 \| good	0.185 \| good
2025-12-11T20:00:00.000Z	14 \| good	2.402 \| good	10.003 \| good	14.5 \| good	0.277 \| good	7.639 \| good	0.186 \| good
2025-12-11T21:00:00.000Z	11 \| good	1.64 \| good	7.537 \| good	12.217 \| good	0.261 \| good	9.24 \| good	0.185 \| good
2025-12-11T22:00:00.000Z	12 \| good	1.062 \| good	4.326 \| good	12.265 \| good	0.263 \| good	13.428 \| good	0.2 \| good
2025-12-11T23:00:00.000Z	26 \| good	0.721 \| good	2.938 \| good	27.623 \| good	0.285 \| good	14.9 \| good	0.284 \| good
2025-12-12T00:00:00.000Z	21 \| good	2.084 \| good	7.043 \| good	18.972 \| good	0.258 \| good	21.575 \| good	0.453 \| good
2025-12-12T01:00:00.000Z	28 \| good	3.376 \| good	13.395 \| good	12.807 \| good	0.247 \| good	29.927 \| good	0.453 \| good
2025-12-12T02:00:00.000Z	27 \| good	4.09 \| good	15.738 \| good	17.439 \| good	0.188 \| good	29.015 \| good	0.369 \| good
2025-12-12T03:00:00.000Z	60 \| moderate	14.358 \| fine	62.845 \| fine	13.815 \| good	2.375 \| good	25.882 \| good	0.257 \| good
2025-12-12T04:00:00.000Z	22 \| good	4.335 \| good	18.099 \| good	11.168 \| good	0.189 \| good	21.214 \| good	0.468 \| good
2025-12-12T05:00:00.000Z	33 \| good	5.979 \| good	25.148 \| good	7.822 \| good	0.246 \| good	28.396 \| good	0.369 \| good
2025-12-12T06:00:00.000Z	38 \| good	6.997 \| good	29.481 \| good	10.177 \| good	0.264 \| good	24.625 \| good	0.553 \| good
2025-12-12T07:00:00.000Z	38 \| good	7.081 \| good	29.871 \| good	10.214 \| good	0.29 \| good	24.56 \| good	0.553 \| good
2025-12-12T08:00:00.000Z	38 \| good	6.934 \| good	28.279 \| good	13.351 \| good	0.232 \| good	15.668 \| good	0.369 \| good
2025-12-12T09:00:00.000Z	38 \| good	6.602 \| good	28.371 \| good	9.856 \| good	0.244 \| good	14.66 \| good	0.284 \| good
2025-12-12T10:00:00.000Z	38 \| good	7.044 \| good	29.076 \| good	11.826 \| good	0.218 \| good	14.241 \| good	0.284 \| good
2025-12-12T11:00:00.000Z	52 \| moderate	9.652 \| good	40.778 \| good	16.135 \| good	0.231 \| good	11.288 \| good	0.2 \| good
2025-12-12T12:00:00.000Z	52 \| moderate	9.883 \| good	40.833 \| good	11.119 \| good	0.246 \| good	11.827 \| good	0.199 \| good
2025-12-12T13:00:00.000Z	52 \| moderate	9.911 \| good	40.975 \| good	12.108 \| good	0.244 \| good	11.798 \| good	0.199 \| good
2025-12-12T14:00:00.000Z	44 \| good	7.67 \| good	30.615 \| good	14.115 \| good	0.238 \| good	12.872 \| good	0.284 \| good
2025-12-12T15:00:00.000Z	38 \| good	6.817 \| good	27.432 \| good	12.744 \| good	0.252 \| good	11.441 \| good	0.284 \| good
2025-12-12T16:00:00.000Z	38 \| good	6.59 \| good	25.781 \| good	13.225 \| good	0.191 \| good	12.871 \| good	0.199 \| good
2025-12-12T17:00:00.000Z	27 \| good	5.456 \| good	20.943 \| good	10.157 \| good	0.184 \| good	15.507 \| good	0.299 \| good
2025-12-12T18:00:00.000Z	33 \| good	6.197 \| good	27.923 \| good	11.746 \| good	0.207 \| good	18.982 \| good	0.384 \| good
2025-12-12T19:00:00.000Z	38 \| good	7.409 \| good	32.298 \| good	16.218 \| good	0.474 \| good	23.622 \| good	0.468 \| good
2025-12-12T20:00:00.000Z	44 \| good	8.057 \| good	33.506 \| good	18.974 \| good	0.104 \| good	24.385 \| good	0.468 \| good
2025-12-12T21:00:00.000Z	44 \| good	7.844 \| good	30.473 \| good	17.333 \| good	0.379 \| good	25.57 \| good	0.567 \| good
2025-12-12T22:00:00.000Z	44 \| good	7.775 \| good	32.524 \| good	17.931 \| good	0.725 \| good	23.143 \| good	0.453 \| good
2025-12-12T23:00:00.000Z	44 \| good	8.44 \| good	35.425 \| good	13.918 \| good	0.211 \| good	20.707 \| good	0.453 \| good
2025-12-13T00:00:00.000Z	38 \| good	6.75 \| good	30.062 \| good	14.886 \| good	0.337 \| good	19.07 \| good	0.537 \| good
2025-12-13T01:00:00.000Z	33 \| good	5.564 \| good	22.877 \| good	12.794 \| good	0.281 \| good	20.506 \| good	0.537 \| good
2025-12-13T02:00:00.000Z	27 \| good	4.779 \| good	19.89 \| good	8.543 \| good	0.274 \| good	23.418 \| good	0.537 \| good
2025-12-13T03:00:00.000Z	62 \| moderate	14.672 \| fine	65.369 \| fine	7.949 \| good	0.765 \| good	14.336 \| good	0.174 \| good
2025-12-13T04:00:00.000Z	22 \| good	4.346 \| good	17.645 \| good	11.638 \| good	0.558 \| good	14.125 \| good	0.284 \| good
2025-12-13T05:00:00.000Z	27 \| good	5.017 \| good	19.843 \| good	11.542 \| good	0.367 \| good	17.418 \| good	0.369 \| good
2025-12-13T06:00:00.000Z	27 \| good	4.504 \| good	18.164 \| good	11.635 \| good	0.375 \| good	15.995 \| good	0.368 \| good
2025-12-13T07:00:00.000Z	22 \| good	4.445 \| good	17.941 \| good	11.707 \| good	0.374 \| good	16.01 \| good	0.368 \| good
2025-12-13T08:00:00.000Z	16 \| good	3.377 \| good	13.729 \| good	11.333 \| good	0.196 \| good	10.768 \| good	0.269 \| good
2025-12-13T09:00:00.000Z	16 \| good	3.495 \| good	13.009 \| good	12.431 \| good	0.196 \| good	15.214 \| good	0.453 \| good
2025-12-13T10:00:00.000Z	27 \| good	5.059 \| good	19.413 \| good	11.213 \| good	0.215 \| good	14.694 \| good	0.453 \| good
2025-12-13T11:00:00.000Z	33 \| good	6.185 \| good	25.163 \| good	10.197 \| good	0.197 \| good	15.06 \| good	0.284 \| good
2025-12-13T12:00:00.000Z	38 \| good	6.671 \| good	26.181 \| good	9.237 \| good	0.155 \| good	15.465 \| good	0.368 \| good
2025-12-13T12:00:00.000Z	33 \| good	6.185 \| good	25.163 \| good	10.197 \| good	0.197 \| good	15.06 \| good	0.284 \| good
2025-12-13T13:00:00.000Z	62 \| moderate	15.036 \| fine	66.956 \| fine	13.083 \| good	0.784 \| good	10.177 \| good	0.148 \| good
2025-12-13T14:00:00.000Z	64 \| moderate	15.628 \| fine	69.575 \| fine	13.159 \| good	0.878 \| good	12.273 \| good	0.167 \| good
2025-12-13T15:00:00.000Z	66 \| moderate	17.282 \| fine	76.578 \| fine	9.175 \| good	0.973 \| good	14.369 \| good	0.186 \| good
2025-12-13T16:00:00.000Z	69 \| moderate	19.006 \| fine	83.864 \| fine	7.874 \| good	1.061 \| good	14.413 \| good	0.197 \| good
2025-12-13T17:00:00.000Z	73 \| moderate	20.812 \| fine	91.046 \| fine	11.817 \| good	1.148 \| good	14.456 \| good	0.209 \| good
2025-12-13T18:00:00.000Z	66 \| moderate	17.368 \| fine	77.204 \| fine	14.661 \| good	1.236 \| good	14.5 \| good	0.22 \| good
2025-12-13T19:00:00.000Z	62 \| moderate	14.637 \| fine	65.103 \| fine	18.704 \| good	1.294 \| good	12.751 \| good	0.201 \| good
2025-12-13T20:00:00.000Z	60 \| moderate	13.755 \| fine	61.422 \| fine	22.83 \| good	1.353 \| good	11.002 \| good	0.181 \| good
2025-12-13T21:00:00.000Z	62 \| moderate	15.071 \| fine	67.439 \| fine	19.983 \| good	1.411 \| good	9.253 \| good	0.162 \| good
2025-12-13T22:00:00.000Z	66 \| moderate	16.501 \| fine	73.414 \| fine	18.16 \| good	1.602 \| good	13.537 \| good	0.204 \| good
2025-12-13T23:00:00.000Z	66 \| moderate	16.598 \| fine	73.805 \| fine	13.388 \| good	1.793 \| good	17.821 \| good	0.246 \| good
2025-12-14T00:00:00.000Z	66 \| moderate	16.776 \| fine	74.562 \| fine	5.304 \| good	1.985 \| good	22.105 \| good	0.287 \| good
2025-12-14T01:00:00.000Z	73 \| moderate	21.212 \| fine	93.149 \| fine	4.771 \| good	2.047 \| good	22.611 \| good	0.362 \| good
2025-12-14T02:00:00.000Z	86 \| moderate	27.671 \| fine	120.582 \| fine	3.729 \| good	2.109 \| good	23.117 \| good	0.436 \| good
2025-12-14T03:00:00.000Z	90 \| moderate	30.279 \| fine	133.581 \| fine	3.252 \| good	2.172 \| good	23.623 \| good	0.511 \| good
2025-12-14T04:00:00.000Z	96 \| moderate	32.92 \| fine	145.281 \| fine	2.649 \| good	2.082 \| good	23.142 \| good	0.46 \| good
2025-12-14T05:00:00.000Z	96 \| moderate	32.517 \| fine	142.91 \| fine	1.045 \| good	1.993 \| good	22.661 \| good	0.41 \| good
2025-12-14T06:00:00.000Z	92 \| moderate	31.42 \| fine	138.151 \| fine	2.006 \| good	1.904 \| good	22.18 \| good	0.359 \| good
2025-12-14T07:00:00.000Z	82 \| moderate	26.277 \| fine	114.811 \| fine	5.18 \| good	1.731 \| good	18.611 \| good	0.303 \| good
2025-12-14T08:00:00.000Z	81 \| moderate	24.564 \| fine	106.871 \| fine	7.198 \| good	1.558 \| good	15.042 \| good	0.246 \| good
2025-12-14T09:00:00.000Z	81 \| moderate	25.145 \| fine	109.358 \| fine	7.53 \| good	1.385 \| good	11.473 \| good	0.189 \| good
2025-12-14T10:00:00.000Z	79 \| moderate	24.077 \| fine	105.191 \| fine	9.378 \| good	1.308 \| good	9.837 \| good	0.184 \| good
2025-12-14T11:00:00.000Z	77 \| moderate	22.861 \| fine	99.874 \| fine	11.23 \| good	1.231 \| good	8.201 \| good	0.179 \| good
2025-12-14T12:00:00.000Z	79 \| moderate	23.843 \| fine	103.904 \| fine	8.375 \| good	1.153 \| good	6.565 \| good	0.173 \| good
2025-12-14T13:00:00.000Z	79 \| moderate	24.004 \| fine	104.704 \| fine	10.257 \| good	1.161 \| good	7.413 \| good	0.175 \| good
2025-12-14T14:00:00.000Z	79 \| moderate	23.603 \| fine	103.121 \| fine	11.17 \| good	1.168 \| good	8.262 \| good	0.178 \| good
2025-12-14T15:00:00.000Z	73 \| moderate	21.363 \| fine	93.931 \| fine	13.321 \| good	1.176 \| good	9.11 \| good	0.18 \| good
2025-12-14T16:00:00.000Z	60 \| moderate	14.428 \| fine	64.422 \| fine	16.503 \| good	1.207 \| good	10.005 \| good	0.186 \| good
2025-12-14T17:00:00.000Z	56 \| moderate	11.557 \| good	51.252 \| good	17.382 \| good	1.239 \| good	10.9 \| good	0.192 \| good
2025-12-14T18:00:00.000Z	56 \| moderate	12.472 \| fine	55.345 \| fine	19.994 \| good	1.27 \| good	11.794 \| good	0.199 \| good
2025-12-14T19:00:00.000Z	54 \| moderate	11.212 \| good	50.115 \| good	21.881 \| good	1.241 \| good	10.807 \| good	0.192 \| good
2025-12-14T20:00:00.000Z	49 \| good	8.864 \| good	39.429 \| good	24.034 \| good	1.212 \| good	9.82 \| good	0.185 \| good
2025-12-14T21:00:00.000Z	49 \| good	8.517 \| good	37.718 \| good	25.582 \| good	1.183 \| good	8.833 \| good	0.179 \| good
2025-12-14T22:00:00.000Z	49 \| good	8.931 \| good	39.504 \| good	21.284 \| good	1.164 \| good	9.087 \| good	0.177 \| good
2025-12-14T23:00:00.000Z	52 \| moderate	10.335 \| good	46.183 \| good	17.274 \| good	1.146 \| good	9.341 \| good	0.176 \| good
2025-12-15T00:00:00.000Z	54 \| moderate	10.969 \| good	48.809 \| good	9.705 \| good	1.127 \| good	9.594 \| good	0.175 \| good
2025-12-15T01:00:00.000Z	60 \| moderate	13.651 \| fine	60.591 \| fine	10.573 \| good	1.176 \| good	11.035 \| good	0.186 \| good
2025-12-15T02:00:00.000Z	67 \| moderate	17.81 \| fine	78.493 \| fine	10.301 \| good	1.224 \| good	12.477 \| good	0.197 \| good
2025-12-15T03:00:00.000Z	67 \| moderate	18.107 \| fine	79.294 \| fine	8.84 \| good	1.273 \| good	13.918 \| good	0.208 \| good
2025-12-15T04:00:00.000Z	71 \| moderate	20.299 \| fine	89.693 \| fine	7.515 \| good	1.283 \| good	12.415 \| good	0.2 \| good
2025-12-15T05:00:00.000Z	81 \| moderate	25.054 \| fine	109.487 \| fine	6.331 \| good	1.293 \| good	10.913 \| good	0.193 \| good
2025-12-15T06:00:00.000Z	52 \| moderate	10.293 \| good	10.623 \| good	23.489 \| good	1.31 \| good	9.417 \| good	0.185 \| good
2025-12-15T07:00:00.000Z	81 \| moderate	25.11 \| fine	109.592 \| fine	5.579 \| good	1.208 \| good	7.532 \| good	0.174 \| good
2025-12-15T08:00:00.000Z	67 \| moderate	18.178 \| fine	80.274 \| fine	8.454 \| good	1.112 \| good	5.654 \| good	0.163 \| good
2025-12-15T09:00:00.000Z	56 \| moderate	12.201 \| fine	54.296 \| good	18.594 \| good	1.017 \| good	3.776 \| good	0.152 \| good
2025-12-15T10:00:00.000Z	49 \| good	8.597 \| good	38.236 \| good	24.456 \| good	0.958 \| good	3.496 \| good	0.149 \| good
2025-12-15T11:00:00.000Z	26 \| good	3.975 \| good	16.874 \| good	28.3 \| good	0.899 \| good	3.215 \| good	0.147 \| good
2025-12-15T12:00:00.000Z	38 \| good	7.238 \| good	7.35 \| good	33.493 \| good	0.845 \| good	2.969 \| good	0.145 \| good

Seattle

Empower business decisions with accurate air quality data

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

0.23ppm

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 2025-12-13.

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

The best air quality in Seattle, Washington was recorded at 09:00:00 on 2025-12-13.

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

The real-time air quality index in Seattle, Washington is 33, currently categorized as Good.

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 6.185 μg/m³.

What are the current PM₁₀ levels at Seattle, Washington?

The current PM₁₀ levels in Seattle, Washington are 25.163 μg/m³.

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

The current carbon monoxide (CO) level in Seattle, Washington is 0.284 ppm.

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

The current sulfur dioxide (SO₂) levels in Seattle, Washington are 0.197 ppb.

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

The current ozone (O₃) levels at Seattle, Washington is 10.197 ppm.

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

The current nitrogen dioxide (NO₂) levels at Seattle, Washington is 15.06 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-11T13:00:00.000Z	31 \| good	0.9 \| good	3.593 \| good	34.372 \| good	0.222 \| good	2.031 \| good	0.1 \| good
2025-12-11T14:00:00.000Z	30 \| good	2.608 \| good	10.922 \| good	32.23 \| good	0.276 \| good	3.892 \| good	0.1 \| good
2025-12-11T15:00:00.000Z	26 \| good	3.225 \| good	14.018 \| good	27.514 \| good	0.195 \| good	4.074 \| good	0.1 \| good
2025-12-11T16:00:00.000Z	28 \| good	2.898 \| good	12.768 \| good	30.149 \| good	0.218 \| good	5.51 \| good	0.101 \| good
2025-12-11T17:00:00.000Z	24 \| good	3.244 \| good	13.675 \| good	26.456 \| good	0.214 \| good	5.68 \| good	0.101 \| good
2025-12-11T18:00:00.000Z	21 \| good	2.578 \| good	10.43 \| good	22.529 \| good	0.213 \| good	6.324 \| good	0.185 \| good
2025-12-11T19:00:00.000Z	20 \| good	2.25 \| good	8.85 \| good	21.955 \| good	0.255 \| good	7.011 \| good	0.185 \| good
2025-12-11T20:00:00.000Z	14 \| good	2.402 \| good	10.003 \| good	14.5 \| good	0.277 \| good	7.639 \| good	0.186 \| good
2025-12-11T21:00:00.000Z	11 \| good	1.64 \| good	7.537 \| good	12.217 \| good	0.261 \| good	9.24 \| good	0.185 \| good
2025-12-11T22:00:00.000Z	12 \| good	1.062 \| good	4.326 \| good	12.265 \| good	0.263 \| good	13.428 \| good	0.2 \| good
2025-12-11T23:00:00.000Z	26 \| good	0.721 \| good	2.938 \| good	27.623 \| good	0.285 \| good	14.9 \| good	0.284 \| good
2025-12-12T00:00:00.000Z	21 \| good	2.084 \| good	7.043 \| good	18.972 \| good	0.258 \| good	21.575 \| good	0.453 \| good
2025-12-12T01:00:00.000Z	28 \| good	3.376 \| good	13.395 \| good	12.807 \| good	0.247 \| good	29.927 \| good	0.453 \| good
2025-12-12T02:00:00.000Z	27 \| good	4.09 \| good	15.738 \| good	17.439 \| good	0.188 \| good	29.015 \| good	0.369 \| good
2025-12-12T03:00:00.000Z	60 \| moderate	14.358 \| fine	62.845 \| fine	13.815 \| good	2.375 \| good	25.882 \| good	0.257 \| good
2025-12-12T04:00:00.000Z	22 \| good	4.335 \| good	18.099 \| good	11.168 \| good	0.189 \| good	21.214 \| good	0.468 \| good
2025-12-12T05:00:00.000Z	33 \| good	5.979 \| good	25.148 \| good	7.822 \| good	0.246 \| good	28.396 \| good	0.369 \| good
2025-12-12T06:00:00.000Z	38 \| good	6.997 \| good	29.481 \| good	10.177 \| good	0.264 \| good	24.625 \| good	0.553 \| good
2025-12-12T07:00:00.000Z	38 \| good	7.081 \| good	29.871 \| good	10.214 \| good	0.29 \| good	24.56 \| good	0.553 \| good
2025-12-12T08:00:00.000Z	38 \| good	6.934 \| good	28.279 \| good	13.351 \| good	0.232 \| good	15.668 \| good	0.369 \| good
2025-12-12T09:00:00.000Z	38 \| good	6.602 \| good	28.371 \| good	9.856 \| good	0.244 \| good	14.66 \| good	0.284 \| good
2025-12-12T10:00:00.000Z	38 \| good	7.044 \| good	29.076 \| good	11.826 \| good	0.218 \| good	14.241 \| good	0.284 \| good
2025-12-12T11:00:00.000Z	52 \| moderate	9.652 \| good	40.778 \| good	16.135 \| good	0.231 \| good	11.288 \| good	0.2 \| good
2025-12-12T12:00:00.000Z	52 \| moderate	9.883 \| good	40.833 \| good	11.119 \| good	0.246 \| good	11.827 \| good	0.199 \| good
2025-12-12T13:00:00.000Z	52 \| moderate	9.911 \| good	40.975 \| good	12.108 \| good	0.244 \| good	11.798 \| good	0.199 \| good
2025-12-12T14:00:00.000Z	44 \| good	7.67 \| good	30.615 \| good	14.115 \| good	0.238 \| good	12.872 \| good	0.284 \| good
2025-12-12T15:00:00.000Z	38 \| good	6.817 \| good	27.432 \| good	12.744 \| good	0.252 \| good	11.441 \| good	0.284 \| good
2025-12-12T16:00:00.000Z	38 \| good	6.59 \| good	25.781 \| good	13.225 \| good	0.191 \| good	12.871 \| good	0.199 \| good
2025-12-12T17:00:00.000Z	27 \| good	5.456 \| good	20.943 \| good	10.157 \| good	0.184 \| good	15.507 \| good	0.299 \| good
2025-12-12T18:00:00.000Z	33 \| good	6.197 \| good	27.923 \| good	11.746 \| good	0.207 \| good	18.982 \| good	0.384 \| good
2025-12-12T19:00:00.000Z	38 \| good	7.409 \| good	32.298 \| good	16.218 \| good	0.474 \| good	23.622 \| good	0.468 \| good
2025-12-12T20:00:00.000Z	44 \| good	8.057 \| good	33.506 \| good	18.974 \| good	0.104 \| good	24.385 \| good	0.468 \| good
2025-12-12T21:00:00.000Z	44 \| good	7.844 \| good	30.473 \| good	17.333 \| good	0.379 \| good	25.57 \| good	0.567 \| good
2025-12-12T22:00:00.000Z	44 \| good	7.775 \| good	32.524 \| good	17.931 \| good	0.725 \| good	23.143 \| good	0.453 \| good
2025-12-12T23:00:00.000Z	44 \| good	8.44 \| good	35.425 \| good	13.918 \| good	0.211 \| good	20.707 \| good	0.453 \| good
2025-12-13T00:00:00.000Z	38 \| good	6.75 \| good	30.062 \| good	14.886 \| good	0.337 \| good	19.07 \| good	0.537 \| good
2025-12-13T01:00:00.000Z	33 \| good	5.564 \| good	22.877 \| good	12.794 \| good	0.281 \| good	20.506 \| good	0.537 \| good
2025-12-13T02:00:00.000Z	27 \| good	4.779 \| good	19.89 \| good	8.543 \| good	0.274 \| good	23.418 \| good	0.537 \| good
2025-12-13T03:00:00.000Z	62 \| moderate	14.672 \| fine	65.369 \| fine	7.949 \| good	0.765 \| good	14.336 \| good	0.174 \| good
2025-12-13T04:00:00.000Z	22 \| good	4.346 \| good	17.645 \| good	11.638 \| good	0.558 \| good	14.125 \| good	0.284 \| good
2025-12-13T05:00:00.000Z	27 \| good	5.017 \| good	19.843 \| good	11.542 \| good	0.367 \| good	17.418 \| good	0.369 \| good
2025-12-13T06:00:00.000Z	27 \| good	4.504 \| good	18.164 \| good	11.635 \| good	0.375 \| good	15.995 \| good	0.368 \| good
2025-12-13T07:00:00.000Z	22 \| good	4.445 \| good	17.941 \| good	11.707 \| good	0.374 \| good	16.01 \| good	0.368 \| good
2025-12-13T08:00:00.000Z	16 \| good	3.377 \| good	13.729 \| good	11.333 \| good	0.196 \| good	10.768 \| good	0.269 \| good
2025-12-13T09:00:00.000Z	16 \| good	3.495 \| good	13.009 \| good	12.431 \| good	0.196 \| good	15.214 \| good	0.453 \| good
2025-12-13T10:00:00.000Z	27 \| good	5.059 \| good	19.413 \| good	11.213 \| good	0.215 \| good	14.694 \| good	0.453 \| good
2025-12-13T11:00:00.000Z	33 \| good	6.185 \| good	25.163 \| good	10.197 \| good	0.197 \| good	15.06 \| good	0.284 \| good
2025-12-13T12:00:00.000Z	38 \| good	6.671 \| good	26.181 \| good	9.237 \| good	0.155 \| good	15.465 \| good	0.368 \| good
2025-12-13T12:00:00.000Z	33 \| good	6.185 \| good	25.163 \| good	10.197 \| good	0.197 \| good	15.06 \| good	0.284 \| good
2025-12-13T13:00:00.000Z	62 \| moderate	15.036 \| fine	66.956 \| fine	13.083 \| good	0.784 \| good	10.177 \| good	0.148 \| good
2025-12-13T14:00:00.000Z	64 \| moderate	15.628 \| fine	69.575 \| fine	13.159 \| good	0.878 \| good	12.273 \| good	0.167 \| good
2025-12-13T15:00:00.000Z	66 \| moderate	17.282 \| fine	76.578 \| fine	9.175 \| good	0.973 \| good	14.369 \| good	0.186 \| good
2025-12-13T16:00:00.000Z	69 \| moderate	19.006 \| fine	83.864 \| fine	7.874 \| good	1.061 \| good	14.413 \| good	0.197 \| good
2025-12-13T17:00:00.000Z	73 \| moderate	20.812 \| fine	91.046 \| fine	11.817 \| good	1.148 \| good	14.456 \| good	0.209 \| good
2025-12-13T18:00:00.000Z	66 \| moderate	17.368 \| fine	77.204 \| fine	14.661 \| good	1.236 \| good	14.5 \| good	0.22 \| good
2025-12-13T19:00:00.000Z	62 \| moderate	14.637 \| fine	65.103 \| fine	18.704 \| good	1.294 \| good	12.751 \| good	0.201 \| good
2025-12-13T20:00:00.000Z	60 \| moderate	13.755 \| fine	61.422 \| fine	22.83 \| good	1.353 \| good	11.002 \| good	0.181 \| good
2025-12-13T21:00:00.000Z	62 \| moderate	15.071 \| fine	67.439 \| fine	19.983 \| good	1.411 \| good	9.253 \| good	0.162 \| good
2025-12-13T22:00:00.000Z	66 \| moderate	16.501 \| fine	73.414 \| fine	18.16 \| good	1.602 \| good	13.537 \| good	0.204 \| good
2025-12-13T23:00:00.000Z	66 \| moderate	16.598 \| fine	73.805 \| fine	13.388 \| good	1.793 \| good	17.821 \| good	0.246 \| good
2025-12-14T00:00:00.000Z	66 \| moderate	16.776 \| fine	74.562 \| fine	5.304 \| good	1.985 \| good	22.105 \| good	0.287 \| good
2025-12-14T01:00:00.000Z	73 \| moderate	21.212 \| fine	93.149 \| fine	4.771 \| good	2.047 \| good	22.611 \| good	0.362 \| good
2025-12-14T02:00:00.000Z	86 \| moderate	27.671 \| fine	120.582 \| fine	3.729 \| good	2.109 \| good	23.117 \| good	0.436 \| good
2025-12-14T03:00:00.000Z	90 \| moderate	30.279 \| fine	133.581 \| fine	3.252 \| good	2.172 \| good	23.623 \| good	0.511 \| good
2025-12-14T04:00:00.000Z	96 \| moderate	32.92 \| fine	145.281 \| fine	2.649 \| good	2.082 \| good	23.142 \| good	0.46 \| good
2025-12-14T05:00:00.000Z	96 \| moderate	32.517 \| fine	142.91 \| fine	1.045 \| good	1.993 \| good	22.661 \| good	0.41 \| good
2025-12-14T06:00:00.000Z	92 \| moderate	31.42 \| fine	138.151 \| fine	2.006 \| good	1.904 \| good	22.18 \| good	0.359 \| good
2025-12-14T07:00:00.000Z	82 \| moderate	26.277 \| fine	114.811 \| fine	5.18 \| good	1.731 \| good	18.611 \| good	0.303 \| good
2025-12-14T08:00:00.000Z	81 \| moderate	24.564 \| fine	106.871 \| fine	7.198 \| good	1.558 \| good	15.042 \| good	0.246 \| good
2025-12-14T09:00:00.000Z	81 \| moderate	25.145 \| fine	109.358 \| fine	7.53 \| good	1.385 \| good	11.473 \| good	0.189 \| good
2025-12-14T10:00:00.000Z	79 \| moderate	24.077 \| fine	105.191 \| fine	9.378 \| good	1.308 \| good	9.837 \| good	0.184 \| good
2025-12-14T11:00:00.000Z	77 \| moderate	22.861 \| fine	99.874 \| fine	11.23 \| good	1.231 \| good	8.201 \| good	0.179 \| good
2025-12-14T12:00:00.000Z	79 \| moderate	23.843 \| fine	103.904 \| fine	8.375 \| good	1.153 \| good	6.565 \| good	0.173 \| good
2025-12-14T13:00:00.000Z	79 \| moderate	24.004 \| fine	104.704 \| fine	10.257 \| good	1.161 \| good	7.413 \| good	0.175 \| good
2025-12-14T14:00:00.000Z	79 \| moderate	23.603 \| fine	103.121 \| fine	11.17 \| good	1.168 \| good	8.262 \| good	0.178 \| good
2025-12-14T15:00:00.000Z	73 \| moderate	21.363 \| fine	93.931 \| fine	13.321 \| good	1.176 \| good	9.11 \| good	0.18 \| good
2025-12-14T16:00:00.000Z	60 \| moderate	14.428 \| fine	64.422 \| fine	16.503 \| good	1.207 \| good	10.005 \| good	0.186 \| good
2025-12-14T17:00:00.000Z	56 \| moderate	11.557 \| good	51.252 \| good	17.382 \| good	1.239 \| good	10.9 \| good	0.192 \| good
2025-12-14T18:00:00.000Z	56 \| moderate	12.472 \| fine	55.345 \| fine	19.994 \| good	1.27 \| good	11.794 \| good	0.199 \| good
2025-12-14T19:00:00.000Z	54 \| moderate	11.212 \| good	50.115 \| good	21.881 \| good	1.241 \| good	10.807 \| good	0.192 \| good
2025-12-14T20:00:00.000Z	49 \| good	8.864 \| good	39.429 \| good	24.034 \| good	1.212 \| good	9.82 \| good	0.185 \| good
2025-12-14T21:00:00.000Z	49 \| good	8.517 \| good	37.718 \| good	25.582 \| good	1.183 \| good	8.833 \| good	0.179 \| good
2025-12-14T22:00:00.000Z	49 \| good	8.931 \| good	39.504 \| good	21.284 \| good	1.164 \| good	9.087 \| good	0.177 \| good
2025-12-14T23:00:00.000Z	52 \| moderate	10.335 \| good	46.183 \| good	17.274 \| good	1.146 \| good	9.341 \| good	0.176 \| good
2025-12-15T00:00:00.000Z	54 \| moderate	10.969 \| good	48.809 \| good	9.705 \| good	1.127 \| good	9.594 \| good	0.175 \| good
2025-12-15T01:00:00.000Z	60 \| moderate	13.651 \| fine	60.591 \| fine	10.573 \| good	1.176 \| good	11.035 \| good	0.186 \| good
2025-12-15T02:00:00.000Z	67 \| moderate	17.81 \| fine	78.493 \| fine	10.301 \| good	1.224 \| good	12.477 \| good	0.197 \| good
2025-12-15T03:00:00.000Z	67 \| moderate	18.107 \| fine	79.294 \| fine	8.84 \| good	1.273 \| good	13.918 \| good	0.208 \| good
2025-12-15T04:00:00.000Z	71 \| moderate	20.299 \| fine	89.693 \| fine	7.515 \| good	1.283 \| good	12.415 \| good	0.2 \| good
2025-12-15T05:00:00.000Z	81 \| moderate	25.054 \| fine	109.487 \| fine	6.331 \| good	1.293 \| good	10.913 \| good	0.193 \| good
2025-12-15T06:00:00.000Z	52 \| moderate	10.293 \| good	10.623 \| good	23.489 \| good	1.31 \| good	9.417 \| good	0.185 \| good
2025-12-15T07:00:00.000Z	81 \| moderate	25.11 \| fine	109.592 \| fine	5.579 \| good	1.208 \| good	7.532 \| good	0.174 \| good
2025-12-15T08:00:00.000Z	67 \| moderate	18.178 \| fine	80.274 \| fine	8.454 \| good	1.112 \| good	5.654 \| good	0.163 \| good
2025-12-15T09:00:00.000Z	56 \| moderate	12.201 \| fine	54.296 \| good	18.594 \| good	1.017 \| good	3.776 \| good	0.152 \| good
2025-12-15T10:00:00.000Z	49 \| good	8.597 \| good	38.236 \| good	24.456 \| good	0.958 \| good	3.496 \| good	0.149 \| good
2025-12-15T11:00:00.000Z	26 \| good	3.975 \| good	16.874 \| good	28.3 \| good	0.899 \| good	3.215 \| good	0.147 \| good
2025-12-15T12:00:00.000Z	38 \| good	7.238 \| good	7.35 \| good	33.493 \| good	0.845 \| good	2.969 \| good	0.145 \| 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?