What are the current PM10 levels at Seattle, Washington?

The current PM10 levels in Seattle, Washington are 112.548 μg/m3.

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

The current sulfur dioxide (SO2) levels in Seattle, Washington are 0.421 ppb.

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

The current ozone (O3) levels at Seattle, Washington is 22.189 ppm.

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

The current nitrogen dioxide (NO2) levels at Seattle, Washington is 28.293 ppb.

Real-time air quality index in Seattle, Washington today

Name: Live air pollution levels in Seattle, Washington today
Creator: Ambee

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)

Moderate

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)

28.32 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

112.55 μg/m³

155

255

425

605+

Ozone (O₃)

22.19 ppb

201

201+

Sulfur Dioxide (SO₂)

0.42 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

28.29 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.47 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2025-09-04T04:00:00.000Z	71 \| moderate	20.081 \| fine	80.64 \| fine	34.836 \| good	0.772 \| good	29.324 \| good	0.215 \| good
2025-09-04T05:00:00.000Z	73 \| moderate	20.788 \| fine	83.788 \| fine	35.79 \| good	0.674 \| good	45.552 \| good	0.299 \| good
2025-09-04T06:00:00.000Z	75 \| moderate	22.337 \| fine	90.208 \| fine	32.927 \| good	0.499 \| good	43.059 \| good	0.299 \| good
2025-09-04T07:00:00.000Z	73 \| moderate	21.327 \| fine	84.838 \| fine	26.987 \| good	0.495 \| good	30.783 \| good	0.215 \| good
2025-09-04T08:00:00.000Z	69 \| moderate	19.245 \| fine	76.154 \| fine	23.424 \| good	0.405 \| good	17.812 \| good	0.2 \| good
2025-09-04T09:00:00.000Z	67 \| moderate	17.66 \| fine	70.893 \| fine	14.882 \| good	0.309 \| good	23.528 \| good	0.115 \| good
2025-09-04T10:00:00.000Z	60 \| moderate	14.366 \| fine	58.932 \| fine	12.799 \| good	0.479 \| good	20.061 \| good	0.115 \| good
2025-09-04T11:00:00.000Z	58 \| moderate	13.104 \| fine	54.616 \| good	11.899 \| good	0.305 \| good	19.047 \| good	0.106 \| good
2025-09-04T12:00:00.000Z	56 \| moderate	12.451 \| fine	52.557 \| good	10.105 \| good	0.211 \| good	20.012 \| good	0.105 \| good
2025-09-04T13:00:00.000Z	67 \| moderate	17.825 \| fine	78.58 \| fine	9.45 \| good	1.272 \| good	20.172 \| good	0.348 \| good
2025-09-04T14:00:00.000Z	52 \| moderate	9.682 \| good	41.027 \| good	10.2 \| good	0.211 \| good	15.175 \| good	0.269 \| good
2025-09-04T15:00:00.000Z	49 \| good	8.63 \| good	36.538 \| good	7.935 \| good	0.131 \| good	17.642 \| good	0.116 \| good
2025-09-04T16:00:00.000Z	49 \| good	8.992 \| good	38.465 \| good	7.463 \| good	0.368 \| good	17.684 \| good	0.131 \| good
2025-09-04T17:00:00.000Z	58 \| moderate	12.844 \| fine	55.96 \| fine	9.688 \| good	0.621 \| good	21.618 \| good	0.215 \| good
2025-09-04T18:00:00.000Z	58 \| moderate	13.001 \| fine	54.612 \| good	16.767 \| good	0.649 \| good	15.615 \| good	0.2 \| good
2025-09-04T19:00:00.000Z	58 \| moderate	12.782 \| fine	52.957 \| good	14.771 \| good	0.571 \| good	16.688 \| good	0.215 \| good
2025-09-04T20:00:00.000Z	58 \| moderate	13.268 \| fine	55.879 \| fine	15.249 \| good	0.654 \| good	18.145 \| good	0.2 \| good
2025-09-04T21:00:00.000Z	60 \| moderate	13.622 \| fine	57.477 \| fine	16.202 \| good	0.744 \| good	18.549 \| good	0.215 \| good
2025-09-04T22:00:00.000Z	58 \| moderate	13.206 \| fine	54.613 \| good	17.007 \| good	0.845 \| good	21.438 \| good	0.384 \| good
2025-09-04T23:00:00.000Z	62 \| moderate	14.593 \| fine	60.786 \| fine	19.965 \| good	0.57 \| good	20.621 \| good	0.384 \| good
2025-09-05T00:00:00.000Z	66 \| moderate	16.66 \| fine	71.682 \| fine	23.057 \| good	0.578 \| good	25.838 \| good	0.369 \| good
2025-09-05T01:00:00.000Z	67 \| moderate	18.137 \| fine	77.183 \| fine	30.805 \| good	0.588 \| good	22.709 \| good	0.369 \| good
2025-09-05T02:00:00.000Z	69 \| moderate	18.761 \| fine	75.097 \| fine	20.906 \| good	0.684 \| good	19.462 \| good	0.454 \| good
2025-09-05T03:00:00.000Z	69 \| moderate	19.185 \| fine	78.065 \| fine	25.899 \| good	0.678 \| good	21.413 \| good	0.369 \| good
2025-09-05T04:00:00.000Z	69 \| moderate	18.772 \| fine	76.825 \| fine	28.119 \| good	0.581 \| good	22.316 \| good	0.299 \| good
2025-09-05T05:00:00.000Z	69 \| moderate	18.508 \| fine	75.494 \| fine	15.842 \| good	0.478 \| good	29.251 \| good	0.384 \| good
2025-09-05T06:00:00.000Z	71 \| moderate	19.995 \| fine	80.195 \| fine	15.228 \| good	0.762 \| good	32.641 \| good	0.399 \| good
2025-09-05T07:00:00.000Z	66 \| moderate	16.711 \| fine	68.644 \| fine	15.066 \| good	0.433 \| good	26.385 \| good	0.299 \| good
2025-09-05T08:00:00.000Z	58 \| moderate	12.924 \| fine	53.982 \| good	20.679 \| good	0.433 \| good	26.238 \| good	0.2 \| good
2025-09-05T09:00:00.000Z	56 \| moderate	11.658 \| good	48.815 \| good	20.246 \| good	0.495 \| good	25.457 \| good	0.115 \| good
2025-09-05T10:00:00.000Z	54 \| moderate	10.928 \| good	44.411 \| good	10.062 \| good	0.501 \| good	22.382 \| good	0.115 \| good
2025-09-05T11:00:00.000Z	52 \| moderate	9.991 \| good	40.634 \| good	14.759 \| good	0.458 \| good	20.933 \| good	0.115 \| good
2025-09-05T12:00:00.000Z	49 \| good	9.213 \| good	37.29 \| good	10.388 \| good	0.453 \| good	19.962 \| good	0.2 \| good
2025-09-05T13:00:00.000Z	54 \| moderate	10.797 \| good	43.726 \| good	4.377 \| good	0.296 \| good	20.524 \| good	0.2 \| good
2025-09-05T14:00:00.000Z	58 \| moderate	13.018 \| fine	54.339 \| good	9.432 \| good	0.682 \| good	17.367 \| good	0.369 \| good
2025-09-05T15:00:00.000Z	60 \| moderate	13.94 \| fine	58.946 \| fine	9.286 \| good	0.744 \| good	19.681 \| good	0.37 \| good
2025-09-05T16:00:00.000Z	56 \| moderate	12.052 \| good	51.152 \| good	9.078 \| good	0.907 \| good	16.581 \| good	0.285 \| good
2025-09-05T17:00:00.000Z	58 \| moderate	12.964 \| fine	54.765 \| good	8.723 \| good	0.932 \| good	16.987 \| good	0.299 \| good
2025-09-05T18:00:00.000Z	58 \| moderate	12.927 \| fine	54.628 \| good	12.082 \| good	1.11 \| good	17.17 \| good	0.3 \| good
2025-09-05T19:00:00.000Z	58 \| moderate	12.51 \| fine	51.78 \| good	13.98 \| good	1.209 \| good	15.552 \| good	0.299 \| good
2025-09-05T20:00:00.000Z	58 \| moderate	13.407 \| fine	56.646 \| fine	18.154 \| good	0.888 \| good	16.625 \| good	0.285 \| good
2025-09-05T21:00:00.000Z	62 \| moderate	15.014 \| fine	62.67 \| fine	14.023 \| good	0.741 \| good	14.965 \| good	0.285 \| good
2025-09-05T22:00:00.000Z	60 \| moderate	14.156 \| fine	59.454 \| fine	21.261 \| good	1.422 \| good	17.224 \| good	0.284 \| good
2025-09-05T23:00:00.000Z	62 \| moderate	15.122 \| fine	63.184 \| fine	22.096 \| good	0.932 \| good	15.904 \| good	0.285 \| good
2025-09-06T00:00:00.000Z	73 \| moderate	20.951 \| fine	84.982 \| fine	25.526 \| good	1.114 \| good	21.457 \| good	0.384 \| good
2025-09-06T01:00:00.000Z	79 \| moderate	23.69 \| fine	94.015 \| fine	30.48 \| good	0.434 \| good	21.59 \| good	0.384 \| good
2025-09-06T02:00:00.000Z	82 \| moderate	25.632 \| fine	101.577 \| fine	32.326 \| good	0.676 \| good	20.313 \| good	0.468 \| good
2025-09-06T03:00:00.000Z	86 \| moderate	28.32 \| fine	112.548 \| fine	22.189 \| good	0.421 \| good	28.293 \| good	0.469 \| good
2025-09-06T04:00:00.000Z	69 \| moderate	19.461 \| fine	86.066 \| fine	23.489 \| good	1.86 \| good	38.692 \| good	0.531 \| good
2025-09-06T05:00:00.000Z	67 \| moderate	18.314 \| fine	80.539 \| fine	21.908 \| good	1.858 \| good	41.607 \| good	0.556 \| good
2025-09-06T06:00:00.000Z	69 \| moderate	18.591 \| fine	82.31 \| fine	19.963 \| good	1.855 \| good	44.521 \| good	0.58 \| good
2025-09-06T07:00:00.000Z	64 \| moderate	15.986 \| fine	70.884 \| fine	18.547 \| good	1.728 \| good	40.135 \| good	0.54 \| good
2025-09-06T08:00:00.000Z	52 \| moderate	10.266 \| good	45.34 \| good	16.556 \| good	1.601 \| good	35.749 \| good	0.499 \| good
2025-09-06T09:00:00.000Z	49 \| good	8.616 \| good	37.955 \| good	18.886 \| good	1.474 \| good	31.363 \| good	0.459 \| good
2025-09-06T10:00:00.000Z	44 \| good	7.873 \| good	34.947 \| good	21.433 \| good	1.293 \| good	27.191 \| good	0.417 \| good
2025-09-06T11:00:00.000Z	38 \| good	7.485 \| good	33.072 \| good	21.953 \| good	1.111 \| good	23.018 \| good	0.374 \| good
2025-09-06T12:00:00.000Z	38 \| good	7.321 \| good	32.15 \| good	24.268 \| good	0.93 \| good	18.846 \| good	0.332 \| good
2025-09-06T13:00:00.000Z	44 \| good	7.689 \| good	33.733 \| good	24.159 \| good	0.872 \| good	16.894 \| good	0.317 \| good
2025-09-06T14:00:00.000Z	44 \| good	8.335 \| good	36.971 \| good	23.389 \| good	0.813 \| good	14.943 \| good	0.301 \| good
2025-09-06T15:00:00.000Z	52 \| moderate	10.124 \| good	44.659 \| good	21.354 \| good	0.755 \| good	12.992 \| good	0.285 \| good
2025-09-06T16:00:00.000Z	54 \| moderate	11.285 \| good	50.332 \| good	21.254 \| good	0.742 \| good	11.072 \| good	0.274 \| good
2025-09-06T17:00:00.000Z	54 \| moderate	11.356 \| good	50.403 \| good	24.782 \| good	0.729 \| good	9.153 \| good	0.263 \| good
2025-09-06T18:00:00.000Z	54 \| moderate	11.397 \| good	50.701 \| good	26.639 \| good	0.716 \| good	7.234 \| good	0.251 \| good
2025-09-06T19:00:00.000Z	54 \| moderate	11.294 \| good	50.466 \| good	31.536 \| good	0.727 \| good	6.43 \| good	0.246 \| good
2025-09-06T20:00:00.000Z	56 \| moderate	11.928 \| good	53.506 \| good	33.188 \| good	0.739 \| good	5.626 \| good	0.242 \| good
2025-09-06T21:00:00.000Z	58 \| moderate	12.607 \| fine	56.792 \| fine	37.979 \| good	0.75 \| good	4.823 \| good	0.237 \| good
2025-09-06T22:00:00.000Z	56 \| moderate	12.255 \| fine	54.15 \| good	44.089 \| good	0.76 \| good	4.886 \| good	0.232 \| good
2025-09-06T23:00:00.000Z	58 \| moderate	12.743 \| fine	56.916 \| fine	41.728 \| good	0.77 \| good	4.95 \| good	0.228 \| good
2025-09-07T00:00:00.000Z	56 \| moderate	12.4 \| fine	55.148 \| fine	45.336 \| good	0.78 \| good	5.013 \| good	0.223 \| good
2025-09-07T01:00:00.000Z	62 \| moderate	14.636 \| fine	65.262 \| fine	40.454 \| good	0.797 \| good	7.872 \| good	0.233 \| good
2025-09-07T02:00:00.000Z	71 \| moderate	19.796 \| fine	87.436 \| fine	24.504 \| good	0.814 \| good	10.731 \| good	0.243 \| good
2025-09-07T03:00:00.000Z	66 \| moderate	17.301 \| fine	76.941 \| fine	21.518 \| good	0.831 \| good	13.59 \| good	0.252 \| good
2025-09-07T04:00:00.000Z	54 \| moderate	10.94 \| good	48.601 \| good	18.845 \| good	0.797 \| good	12.598 \| good	0.233 \| good
2025-09-07T05:00:00.000Z	49 \| good	9.239 \| good	41.322 \| good	22.02 \| good	0.763 \| good	11.607 \| good	0.213 \| good
2025-09-07T06:00:00.000Z	44 \| good	7.858 \| good	34.471 \| good	21.793 \| good	0.728 \| good	10.615 \| good	0.193 \| good
2025-09-07T07:00:00.000Z	38 \| good	7.032 \| good	31.067 \| good	23.126 \| good	0.716 \| good	9.354 \| good	0.181 \| good
2025-09-07T08:00:00.000Z	33 \| good	6.357 \| good	27.542 \| good	22.192 \| good	0.703 \| good	8.094 \| good	0.168 \| good
2025-09-07T09:00:00.000Z	33 \| good	6.459 \| good	28.094 \| good	19.109 \| good	0.69 \| good	6.833 \| good	0.156 \| good
2025-09-07T10:00:00.000Z	38 \| good	6.993 \| good	30.746 \| good	18.909 \| good	0.674 \| good	6.113 \| good	0.149 \| good
2025-09-07T11:00:00.000Z	33 \| good	6.34 \| good	27.532 \| good	22.212 \| good	0.659 \| good	5.392 \| good	0.142 \| good
2025-09-07T12:00:00.000Z	33 \| good	5.594 \| good	24.492 \| good	23.646 \| good	0.644 \| good	4.671 \| good	0.136 \| good
2025-09-07T13:00:00.000Z	33 \| good	6.461 \| good	28.172 \| good	23.63 \| good	0.667 \| good	4.92 \| good	0.138 \| good
2025-09-07T14:00:00.000Z	38 \| good	7.209 \| good	31.742 \| good	25.665 \| good	0.69 \| good	5.168 \| good	0.14 \| good
2025-09-07T15:00:00.000Z	44 \| good	7.786 \| good	34.401 \| good	26.739 \| good	0.713 \| good	5.416 \| good	0.142 \| good
2025-09-07T16:00:00.000Z	44 \| good	8.084 \| good	35.565 \| good	24.767 \| good	0.691 \| good	5.658 \| good	0.147 \| good
2025-09-07T17:00:00.000Z	44 \| good	7.989 \| good	35.133 \| good	23.947 \| good	0.67 \| good	5.9 \| good	0.151 \| good
2025-09-07T18:00:00.000Z	44 \| good	7.887 \| good	34.647 \| good	23.85 \| good	0.648 \| good	6.143 \| good	0.156 \| good
2025-09-07T19:00:00.000Z	44 \| good	7.972 \| good	34.963 \| good	25.383 \| good	0.679 \| good	6.389 \| good	0.157 \| good
2025-09-07T20:00:00.000Z	44 \| good	8.303 \| good	36.72 \| good	25.214 \| good	0.71 \| good	6.635 \| good	0.158 \| good
2025-09-07T21:00:00.000Z	44 \| good	8.3 \| good	36.331 \| good	25.516 \| good	0.741 \| good	6.88 \| good	0.159 \| good
2025-09-07T22:00:00.000Z	44 \| good	8.234 \| good	36.678 \| good	26.657 \| good	0.743 \| good	7.023 \| good	0.162 \| good
2025-09-07T23:00:00.000Z	44 \| good	8.178 \| good	36.496 \| good	25.354 \| good	0.745 \| good	7.166 \| good	0.164 \| good
2025-09-08T00:00:00.000Z	56 \| moderate	12.094 \| good	13.207 \| good	26.02 \| good	0.752 \| good	7.38 \| good	0.167 \| good
2025-09-08T01:00:00.000Z	49 \| good	8.547 \| good	37.951 \| good	32.709 \| good	0.768 \| good	9.141 \| good	0.178 \| good
2025-09-08T02:00:00.000Z	54 \| moderate	11.13 \| good	49.475 \| good	21.441 \| good	0.788 \| good	10.973 \| good	0.19 \| good
2025-09-08T03:00:00.000Z	60 \| moderate	14.131 \| fine	62.733 \| fine	13.597 \| good	0.809 \| good	12.805 \| good	0.202 \| good

Seattle

Empower business decisions with accurate air quality data

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

0.37ppm

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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Check live rankings of places in the USA with the cleanest air.

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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 02:00:00 on 2025-09-06.

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 2025-09-05.

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

The real-time air quality index in Seattle, Washington is 86, 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 28.32 μg/m³.

What are the current PM₁₀ levels at Seattle, Washington?

The current PM₁₀ levels in Seattle, Washington are 112.548 μg/m³.

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

The current carbon monoxide (CO) level in Seattle, Washington is 0.469 ppm.

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

The current sulfur dioxide (SO₂) levels in Seattle, Washington are 0.421 ppb.

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

The current ozone (O₃) levels at Seattle, Washington is 22.189 ppm.

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

The current nitrogen dioxide (NO₂) levels at Seattle, Washington is 28.293 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-04T04:00:00.000Z	71 \| moderate	20.081 \| fine	80.64 \| fine	34.836 \| good	0.772 \| good	29.324 \| good	0.215 \| good
2025-09-04T05:00:00.000Z	73 \| moderate	20.788 \| fine	83.788 \| fine	35.79 \| good	0.674 \| good	45.552 \| good	0.299 \| good
2025-09-04T06:00:00.000Z	75 \| moderate	22.337 \| fine	90.208 \| fine	32.927 \| good	0.499 \| good	43.059 \| good	0.299 \| good
2025-09-04T07:00:00.000Z	73 \| moderate	21.327 \| fine	84.838 \| fine	26.987 \| good	0.495 \| good	30.783 \| good	0.215 \| good
2025-09-04T08:00:00.000Z	69 \| moderate	19.245 \| fine	76.154 \| fine	23.424 \| good	0.405 \| good	17.812 \| good	0.2 \| good
2025-09-04T09:00:00.000Z	67 \| moderate	17.66 \| fine	70.893 \| fine	14.882 \| good	0.309 \| good	23.528 \| good	0.115 \| good
2025-09-04T10:00:00.000Z	60 \| moderate	14.366 \| fine	58.932 \| fine	12.799 \| good	0.479 \| good	20.061 \| good	0.115 \| good
2025-09-04T11:00:00.000Z	58 \| moderate	13.104 \| fine	54.616 \| good	11.899 \| good	0.305 \| good	19.047 \| good	0.106 \| good
2025-09-04T12:00:00.000Z	56 \| moderate	12.451 \| fine	52.557 \| good	10.105 \| good	0.211 \| good	20.012 \| good	0.105 \| good
2025-09-04T13:00:00.000Z	67 \| moderate	17.825 \| fine	78.58 \| fine	9.45 \| good	1.272 \| good	20.172 \| good	0.348 \| good
2025-09-04T14:00:00.000Z	52 \| moderate	9.682 \| good	41.027 \| good	10.2 \| good	0.211 \| good	15.175 \| good	0.269 \| good
2025-09-04T15:00:00.000Z	49 \| good	8.63 \| good	36.538 \| good	7.935 \| good	0.131 \| good	17.642 \| good	0.116 \| good
2025-09-04T16:00:00.000Z	49 \| good	8.992 \| good	38.465 \| good	7.463 \| good	0.368 \| good	17.684 \| good	0.131 \| good
2025-09-04T17:00:00.000Z	58 \| moderate	12.844 \| fine	55.96 \| fine	9.688 \| good	0.621 \| good	21.618 \| good	0.215 \| good
2025-09-04T18:00:00.000Z	58 \| moderate	13.001 \| fine	54.612 \| good	16.767 \| good	0.649 \| good	15.615 \| good	0.2 \| good
2025-09-04T19:00:00.000Z	58 \| moderate	12.782 \| fine	52.957 \| good	14.771 \| good	0.571 \| good	16.688 \| good	0.215 \| good
2025-09-04T20:00:00.000Z	58 \| moderate	13.268 \| fine	55.879 \| fine	15.249 \| good	0.654 \| good	18.145 \| good	0.2 \| good
2025-09-04T21:00:00.000Z	60 \| moderate	13.622 \| fine	57.477 \| fine	16.202 \| good	0.744 \| good	18.549 \| good	0.215 \| good
2025-09-04T22:00:00.000Z	58 \| moderate	13.206 \| fine	54.613 \| good	17.007 \| good	0.845 \| good	21.438 \| good	0.384 \| good
2025-09-04T23:00:00.000Z	62 \| moderate	14.593 \| fine	60.786 \| fine	19.965 \| good	0.57 \| good	20.621 \| good	0.384 \| good
2025-09-05T00:00:00.000Z	66 \| moderate	16.66 \| fine	71.682 \| fine	23.057 \| good	0.578 \| good	25.838 \| good	0.369 \| good
2025-09-05T01:00:00.000Z	67 \| moderate	18.137 \| fine	77.183 \| fine	30.805 \| good	0.588 \| good	22.709 \| good	0.369 \| good
2025-09-05T02:00:00.000Z	69 \| moderate	18.761 \| fine	75.097 \| fine	20.906 \| good	0.684 \| good	19.462 \| good	0.454 \| good
2025-09-05T03:00:00.000Z	69 \| moderate	19.185 \| fine	78.065 \| fine	25.899 \| good	0.678 \| good	21.413 \| good	0.369 \| good
2025-09-05T04:00:00.000Z	69 \| moderate	18.772 \| fine	76.825 \| fine	28.119 \| good	0.581 \| good	22.316 \| good	0.299 \| good
2025-09-05T05:00:00.000Z	69 \| moderate	18.508 \| fine	75.494 \| fine	15.842 \| good	0.478 \| good	29.251 \| good	0.384 \| good
2025-09-05T06:00:00.000Z	71 \| moderate	19.995 \| fine	80.195 \| fine	15.228 \| good	0.762 \| good	32.641 \| good	0.399 \| good
2025-09-05T07:00:00.000Z	66 \| moderate	16.711 \| fine	68.644 \| fine	15.066 \| good	0.433 \| good	26.385 \| good	0.299 \| good
2025-09-05T08:00:00.000Z	58 \| moderate	12.924 \| fine	53.982 \| good	20.679 \| good	0.433 \| good	26.238 \| good	0.2 \| good
2025-09-05T09:00:00.000Z	56 \| moderate	11.658 \| good	48.815 \| good	20.246 \| good	0.495 \| good	25.457 \| good	0.115 \| good
2025-09-05T10:00:00.000Z	54 \| moderate	10.928 \| good	44.411 \| good	10.062 \| good	0.501 \| good	22.382 \| good	0.115 \| good
2025-09-05T11:00:00.000Z	52 \| moderate	9.991 \| good	40.634 \| good	14.759 \| good	0.458 \| good	20.933 \| good	0.115 \| good
2025-09-05T12:00:00.000Z	49 \| good	9.213 \| good	37.29 \| good	10.388 \| good	0.453 \| good	19.962 \| good	0.2 \| good
2025-09-05T13:00:00.000Z	54 \| moderate	10.797 \| good	43.726 \| good	4.377 \| good	0.296 \| good	20.524 \| good	0.2 \| good
2025-09-05T14:00:00.000Z	58 \| moderate	13.018 \| fine	54.339 \| good	9.432 \| good	0.682 \| good	17.367 \| good	0.369 \| good
2025-09-05T15:00:00.000Z	60 \| moderate	13.94 \| fine	58.946 \| fine	9.286 \| good	0.744 \| good	19.681 \| good	0.37 \| good
2025-09-05T16:00:00.000Z	56 \| moderate	12.052 \| good	51.152 \| good	9.078 \| good	0.907 \| good	16.581 \| good	0.285 \| good
2025-09-05T17:00:00.000Z	58 \| moderate	12.964 \| fine	54.765 \| good	8.723 \| good	0.932 \| good	16.987 \| good	0.299 \| good
2025-09-05T18:00:00.000Z	58 \| moderate	12.927 \| fine	54.628 \| good	12.082 \| good	1.11 \| good	17.17 \| good	0.3 \| good
2025-09-05T19:00:00.000Z	58 \| moderate	12.51 \| fine	51.78 \| good	13.98 \| good	1.209 \| good	15.552 \| good	0.299 \| good
2025-09-05T20:00:00.000Z	58 \| moderate	13.407 \| fine	56.646 \| fine	18.154 \| good	0.888 \| good	16.625 \| good	0.285 \| good
2025-09-05T21:00:00.000Z	62 \| moderate	15.014 \| fine	62.67 \| fine	14.023 \| good	0.741 \| good	14.965 \| good	0.285 \| good
2025-09-05T22:00:00.000Z	60 \| moderate	14.156 \| fine	59.454 \| fine	21.261 \| good	1.422 \| good	17.224 \| good	0.284 \| good
2025-09-05T23:00:00.000Z	62 \| moderate	15.122 \| fine	63.184 \| fine	22.096 \| good	0.932 \| good	15.904 \| good	0.285 \| good
2025-09-06T00:00:00.000Z	73 \| moderate	20.951 \| fine	84.982 \| fine	25.526 \| good	1.114 \| good	21.457 \| good	0.384 \| good
2025-09-06T01:00:00.000Z	79 \| moderate	23.69 \| fine	94.015 \| fine	30.48 \| good	0.434 \| good	21.59 \| good	0.384 \| good
2025-09-06T02:00:00.000Z	82 \| moderate	25.632 \| fine	101.577 \| fine	32.326 \| good	0.676 \| good	20.313 \| good	0.468 \| good
2025-09-06T03:00:00.000Z	86 \| moderate	28.32 \| fine	112.548 \| fine	22.189 \| good	0.421 \| good	28.293 \| good	0.469 \| good
2025-09-06T04:00:00.000Z	69 \| moderate	19.461 \| fine	86.066 \| fine	23.489 \| good	1.86 \| good	38.692 \| good	0.531 \| good
2025-09-06T05:00:00.000Z	67 \| moderate	18.314 \| fine	80.539 \| fine	21.908 \| good	1.858 \| good	41.607 \| good	0.556 \| good
2025-09-06T06:00:00.000Z	69 \| moderate	18.591 \| fine	82.31 \| fine	19.963 \| good	1.855 \| good	44.521 \| good	0.58 \| good
2025-09-06T07:00:00.000Z	64 \| moderate	15.986 \| fine	70.884 \| fine	18.547 \| good	1.728 \| good	40.135 \| good	0.54 \| good
2025-09-06T08:00:00.000Z	52 \| moderate	10.266 \| good	45.34 \| good	16.556 \| good	1.601 \| good	35.749 \| good	0.499 \| good
2025-09-06T09:00:00.000Z	49 \| good	8.616 \| good	37.955 \| good	18.886 \| good	1.474 \| good	31.363 \| good	0.459 \| good
2025-09-06T10:00:00.000Z	44 \| good	7.873 \| good	34.947 \| good	21.433 \| good	1.293 \| good	27.191 \| good	0.417 \| good
2025-09-06T11:00:00.000Z	38 \| good	7.485 \| good	33.072 \| good	21.953 \| good	1.111 \| good	23.018 \| good	0.374 \| good
2025-09-06T12:00:00.000Z	38 \| good	7.321 \| good	32.15 \| good	24.268 \| good	0.93 \| good	18.846 \| good	0.332 \| good
2025-09-06T13:00:00.000Z	44 \| good	7.689 \| good	33.733 \| good	24.159 \| good	0.872 \| good	16.894 \| good	0.317 \| good
2025-09-06T14:00:00.000Z	44 \| good	8.335 \| good	36.971 \| good	23.389 \| good	0.813 \| good	14.943 \| good	0.301 \| good
2025-09-06T15:00:00.000Z	52 \| moderate	10.124 \| good	44.659 \| good	21.354 \| good	0.755 \| good	12.992 \| good	0.285 \| good
2025-09-06T16:00:00.000Z	54 \| moderate	11.285 \| good	50.332 \| good	21.254 \| good	0.742 \| good	11.072 \| good	0.274 \| good
2025-09-06T17:00:00.000Z	54 \| moderate	11.356 \| good	50.403 \| good	24.782 \| good	0.729 \| good	9.153 \| good	0.263 \| good
2025-09-06T18:00:00.000Z	54 \| moderate	11.397 \| good	50.701 \| good	26.639 \| good	0.716 \| good	7.234 \| good	0.251 \| good
2025-09-06T19:00:00.000Z	54 \| moderate	11.294 \| good	50.466 \| good	31.536 \| good	0.727 \| good	6.43 \| good	0.246 \| good
2025-09-06T20:00:00.000Z	56 \| moderate	11.928 \| good	53.506 \| good	33.188 \| good	0.739 \| good	5.626 \| good	0.242 \| good
2025-09-06T21:00:00.000Z	58 \| moderate	12.607 \| fine	56.792 \| fine	37.979 \| good	0.75 \| good	4.823 \| good	0.237 \| good
2025-09-06T22:00:00.000Z	56 \| moderate	12.255 \| fine	54.15 \| good	44.089 \| good	0.76 \| good	4.886 \| good	0.232 \| good
2025-09-06T23:00:00.000Z	58 \| moderate	12.743 \| fine	56.916 \| fine	41.728 \| good	0.77 \| good	4.95 \| good	0.228 \| good
2025-09-07T00:00:00.000Z	56 \| moderate	12.4 \| fine	55.148 \| fine	45.336 \| good	0.78 \| good	5.013 \| good	0.223 \| good
2025-09-07T01:00:00.000Z	62 \| moderate	14.636 \| fine	65.262 \| fine	40.454 \| good	0.797 \| good	7.872 \| good	0.233 \| good
2025-09-07T02:00:00.000Z	71 \| moderate	19.796 \| fine	87.436 \| fine	24.504 \| good	0.814 \| good	10.731 \| good	0.243 \| good
2025-09-07T03:00:00.000Z	66 \| moderate	17.301 \| fine	76.941 \| fine	21.518 \| good	0.831 \| good	13.59 \| good	0.252 \| good
2025-09-07T04:00:00.000Z	54 \| moderate	10.94 \| good	48.601 \| good	18.845 \| good	0.797 \| good	12.598 \| good	0.233 \| good
2025-09-07T05:00:00.000Z	49 \| good	9.239 \| good	41.322 \| good	22.02 \| good	0.763 \| good	11.607 \| good	0.213 \| good
2025-09-07T06:00:00.000Z	44 \| good	7.858 \| good	34.471 \| good	21.793 \| good	0.728 \| good	10.615 \| good	0.193 \| good
2025-09-07T07:00:00.000Z	38 \| good	7.032 \| good	31.067 \| good	23.126 \| good	0.716 \| good	9.354 \| good	0.181 \| good
2025-09-07T08:00:00.000Z	33 \| good	6.357 \| good	27.542 \| good	22.192 \| good	0.703 \| good	8.094 \| good	0.168 \| good
2025-09-07T09:00:00.000Z	33 \| good	6.459 \| good	28.094 \| good	19.109 \| good	0.69 \| good	6.833 \| good	0.156 \| good
2025-09-07T10:00:00.000Z	38 \| good	6.993 \| good	30.746 \| good	18.909 \| good	0.674 \| good	6.113 \| good	0.149 \| good
2025-09-07T11:00:00.000Z	33 \| good	6.34 \| good	27.532 \| good	22.212 \| good	0.659 \| good	5.392 \| good	0.142 \| good
2025-09-07T12:00:00.000Z	33 \| good	5.594 \| good	24.492 \| good	23.646 \| good	0.644 \| good	4.671 \| good	0.136 \| good
2025-09-07T13:00:00.000Z	33 \| good	6.461 \| good	28.172 \| good	23.63 \| good	0.667 \| good	4.92 \| good	0.138 \| good
2025-09-07T14:00:00.000Z	38 \| good	7.209 \| good	31.742 \| good	25.665 \| good	0.69 \| good	5.168 \| good	0.14 \| good
2025-09-07T15:00:00.000Z	44 \| good	7.786 \| good	34.401 \| good	26.739 \| good	0.713 \| good	5.416 \| good	0.142 \| good
2025-09-07T16:00:00.000Z	44 \| good	8.084 \| good	35.565 \| good	24.767 \| good	0.691 \| good	5.658 \| good	0.147 \| good
2025-09-07T17:00:00.000Z	44 \| good	7.989 \| good	35.133 \| good	23.947 \| good	0.67 \| good	5.9 \| good	0.151 \| good
2025-09-07T18:00:00.000Z	44 \| good	7.887 \| good	34.647 \| good	23.85 \| good	0.648 \| good	6.143 \| good	0.156 \| good
2025-09-07T19:00:00.000Z	44 \| good	7.972 \| good	34.963 \| good	25.383 \| good	0.679 \| good	6.389 \| good	0.157 \| good
2025-09-07T20:00:00.000Z	44 \| good	8.303 \| good	36.72 \| good	25.214 \| good	0.71 \| good	6.635 \| good	0.158 \| good
2025-09-07T21:00:00.000Z	44 \| good	8.3 \| good	36.331 \| good	25.516 \| good	0.741 \| good	6.88 \| good	0.159 \| good
2025-09-07T22:00:00.000Z	44 \| good	8.234 \| good	36.678 \| good	26.657 \| good	0.743 \| good	7.023 \| good	0.162 \| good
2025-09-07T23:00:00.000Z	44 \| good	8.178 \| good	36.496 \| good	25.354 \| good	0.745 \| good	7.166 \| good	0.164 \| good
2025-09-08T00:00:00.000Z	56 \| moderate	12.094 \| good	13.207 \| good	26.02 \| good	0.752 \| good	7.38 \| good	0.167 \| good
2025-09-08T01:00:00.000Z	49 \| good	8.547 \| good	37.951 \| good	32.709 \| good	0.768 \| good	9.141 \| good	0.178 \| good
2025-09-08T02:00:00.000Z	54 \| moderate	11.13 \| good	49.475 \| good	21.441 \| good	0.788 \| good	10.973 \| good	0.19 \| good
2025-09-08T03:00:00.000Z	60 \| moderate	14.131 \| fine	62.733 \| fine	13.597 \| good	0.809 \| good	12.805 \| good	0.202 \| 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?