What are the current PM10 levels at Seattle, Washington?

The current PM10 levels in Seattle, Washington are 39.059 μg/m3.

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

The current sulfur dioxide (SO2) levels in Seattle, Washington are 0.83 ppb.

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

The current ozone (O3) levels at Seattle, Washington is 18.297 ppm.

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

The current nitrogen dioxide (NO2) levels at Seattle, Washington is 16.144 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 9.813 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)

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)

9.90 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

44.10 μg/m³

155

255

425

605+

Ozone (O₃)

17.66 ppb

201

201+

Sulfur Dioxide (SO₂)

0.14 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

31.42 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.55 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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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
2026-03-12T10:00:00.000Z	36 \| good	1.865 \| good	7.519 \| good	39.077 \| good	0.136 \| good	7.019 \| good	0.1 \| good
2026-03-12T11:00:00.000Z	37 \| good	2.501 \| good	9.224 \| good	40.143 \| good	0.137 \| good	8.867 \| good	0.1 \| good
2026-03-12T12:00:00.000Z	35 \| good	2.444 \| good	8.58 \| good	37.947 \| good	0.138 \| good	8.896 \| good	0.184 \| good
2026-03-12T13:00:00.000Z	37 \| good	2.461 \| good	8.704 \| good	40.292 \| good	0.138 \| good	8.891 \| good	0.184 \| good
2026-03-12T14:00:00.000Z	37 \| good	3.519 \| good	15.195 \| good	40.362 \| good	0.138 \| good	15.179 \| good	0.269 \| good
2026-03-12T15:00:00.000Z	37 \| good	3.742 \| good	15.552 \| good	40.494 \| good	0.136 \| good	15.604 \| good	0.269 \| good
2026-03-12T16:00:00.000Z	35 \| good	3.241 \| good	11.898 \| good	37.594 \| good	0.136 \| good	22.007 \| good	0.269 \| good
2026-03-12T17:00:00.000Z	31 \| good	4.085 \| good	16.407 \| good	34.128 \| good	0.155 \| good	20.761 \| good	0.269 \| good
2026-03-12T18:00:00.000Z	39 \| good	5.056 \| good	19.908 \| good	41.914 \| good	0.136 \| good	17.415 \| good	0.269 \| good
2026-03-12T19:00:00.000Z	41 \| good	5.15 \| good	20.228 \| good	43.761 \| good	0.174 \| good	18.318 \| good	0.269 \| good
2026-03-12T20:00:00.000Z	40 \| good	4.979 \| good	18.342 \| good	42.908 \| good	0.176 \| good	14.472 \| good	0.269 \| good
2026-03-12T21:00:00.000Z	39 \| good	4.232 \| good	15.933 \| good	41.902 \| good	0.176 \| good	15.001 \| good	0.269 \| good
2026-03-12T22:00:00.000Z	38 \| good	3.836 \| good	15.624 \| good	40.783 \| good	0.156 \| good	14.848 \| good	0.269 \| good
2026-03-12T23:00:00.000Z	35 \| good	3.593 \| good	14.163 \| good	38.289 \| good	0.118 \| good	15.519 \| good	0.353 \| good
2026-03-13T00:00:00.000Z	34 \| good	3.385 \| good	11.978 \| good	37.052 \| good	0.137 \| good	13.923 \| good	0.269 \| good
2026-03-13T01:00:00.000Z	36 \| good	3.352 \| good	11.747 \| good	38.537 \| good	0.155 \| good	11.018 \| good	0.269 \| good
2026-03-13T02:00:00.000Z	36 \| good	2.658 \| good	10.365 \| good	38.643 \| good	0.154 \| good	14.257 \| good	0.269 \| good
2026-03-13T03:00:00.000Z	36 \| good	2.853 \| good	10.566 \| good	38.578 \| good	0.136 \| good	11.588 \| good	0.368 \| good
2026-03-13T04:00:00.000Z	34 \| good	2.923 \| good	11.02 \| good	37.107 \| good	0.157 \| good	12.299 \| good	0.284 \| good
2026-03-13T05:00:00.000Z	31 \| good	3.762 \| good	14.854 \| good	34.398 \| good	0.158 \| good	9.081 \| good	0.284 \| good
2026-03-13T06:00:00.000Z	34 \| good	4.199 \| good	16.312 \| good	36.706 \| good	0.158 \| good	8.282 \| good	0.284 \| good
2026-03-13T07:00:00.000Z	33 \| good	4.205 \| good	16.33 \| good	36.359 \| good	0.158 \| good	8.288 \| good	0.284 \| good
2026-03-13T08:00:00.000Z	60 \| moderate	13.951 \| fine	61.218 \| fine	34.321 \| good	0.138 \| good	10.203 \| good	0.284 \| good
2026-03-13T09:00:00.000Z	62 \| moderate	14.827 \| fine	65.097 \| fine	33.308 \| good	0.119 \| good	6.622 \| good	0.284 \| good
2026-03-13T10:00:00.000Z	38 \| good	6.938 \| good	30.052 \| good	33.441 \| good	0.119 \| good	5.662 \| good	0.284 \| good
2026-03-13T11:00:00.000Z	28 \| good	4.511 \| good	19.198 \| good	29.632 \| good	0.138 \| good	7.1 \| good	0.185 \| good
2026-03-13T12:00:00.000Z	29 \| good	4.555 \| good	19.416 \| good	30.589 \| good	0.138 \| good	7.101 \| good	0.185 \| good
2026-03-13T13:00:00.000Z	29 \| good	4.187 \| good	17.143 \| good	30.619 \| good	0.119 \| good	9.091 \| good	0.269 \| good
2026-03-13T14:00:00.000Z	21 \| good	2.603 \| good	9.664 \| good	23.027 \| good	0.119 \| good	15.516 \| good	0.2 \| good
2026-03-13T15:00:00.000Z	56 \| moderate	11.647 \| good	49.656 \| good	24.737 \| good	0.1 \| good	21.057 \| good	0.453 \| good
2026-03-13T16:00:00.000Z	52 \| moderate	9.626 \| good	39.893 \| good	18.558 \| good	0.118 \| good	23.7 \| good	0.453 \| good
2026-03-13T17:00:00.000Z	44 \| good	7.608 \| good	31.458 \| good	20.275 \| good	0.136 \| good	25.231 \| good	0.368 \| good
2026-03-13T18:00:00.000Z	33 \| good	5.677 \| good	22.337 \| good	23.312 \| good	0.135 \| good	24.959 \| good	0.368 \| good
2026-03-13T19:00:00.000Z	27 \| good	5.119 \| good	19.401 \| good	23.877 \| good	0.154 \| good	28.719 \| good	0.453 \| good
2026-03-13T20:00:00.000Z	27 \| good	4.775 \| good	19.2 \| good	23.743 \| good	0.173 \| good	22.726 \| good	0.368 \| good
2026-03-13T21:00:00.000Z	38 \| good	6.8 \| good	28.816 \| good	24.879 \| good	0.104 \| good	21.673 \| good	0.468 \| good
2026-03-13T22:00:00.000Z	33 \| good	6.28 \| good	26.462 \| good	23.417 \| good	0.104 \| good	17.586 \| good	0.299 \| good
2026-03-13T23:00:00.000Z	38 \| good	7.175 \| good	29.64 \| good	24.435 \| good	0.105 \| good	18.465 \| good	0.384 \| good
2026-03-14T00:00:00.000Z	33 \| good	6.081 \| good	27.264 \| good	24.67 \| good	0.1 \| good	20.253 \| good	0.383 \| good
2026-03-14T01:00:00.000Z	33 \| good	6.099 \| good	25.696 \| good	23.72 \| good	0.153 \| good	19.793 \| good	0.482 \| good
2026-03-14T02:00:00.000Z	33 \| good	5.964 \| good	25.41 \| good	24.221 \| good	0.132 \| good	18.605 \| good	0.299 \| good
2026-03-14T03:00:00.000Z	27 \| good	5.171 \| good	20.788 \| good	22.817 \| good	0.13 \| good	15.951 \| good	0.299 \| good
2026-03-14T04:00:00.000Z	27 \| good	4.684 \| good	20.806 \| good	20.184 \| good	0.113 \| good	15.85 \| good	0.299 \| good
2026-03-14T05:00:00.000Z	22 \| good	4.487 \| good	17.806 \| good	18.36 \| good	0.534 \| good	12.572 \| good	0.299 \| good
2026-03-14T06:00:00.000Z	52 \| moderate	9.813 \| good	39.059 \| good	18.297 \| good	0.83 \| good	16.144 \| good	0.384 \| good
2026-03-14T07:00:00.000Z	52 \| moderate	9.856 \| good	39.277 \| good	19.816 \| good	0.782 \| good	16.123 \| good	0.384 \| good
2026-03-14T08:00:00.000Z	52 \| moderate	9.897 \| good	44.096 \| good	17.656 \| good	0.135 \| good	31.421 \| good	0.553 \| good
2026-03-14T09:00:00.000Z	52 \| moderate	9.897 \| good	44.096 \| good	17.656 \| good	0.135 \| good	31.421 \| good	0.553 \| good
2026-03-14T08:00:00.000Z	71 \| moderate	19.991 \| fine	88 \| fine	1.882 \| good	1.269 \| good	22.457 \| good	0.28 \| good
2026-03-14T09:00:00.000Z	69 \| moderate	19.345 \| fine	85.306 \| fine	1.331 \| good	1.192 \| good	19.073 \| good	0.261 \| good
2026-03-14T10:00:00.000Z	67 \| moderate	17.788 \| fine	78.577 \| fine	2.257 \| good	1.139 \| good	17.139 \| good	0.244 \| good
2026-03-14T11:00:00.000Z	62 \| moderate	14.851 \| fine	65.63 \| fine	5.938 \| good	1.086 \| good	15.205 \| good	0.227 \| good
2026-03-14T12:00:00.000Z	54 \| moderate	10.987 \| good	48.831 \| good	13.235 \| good	1.032 \| good	13.271 \| good	0.209 \| good
2026-03-14T13:00:00.000Z	52 \| moderate	9.52 \| good	42.104 \| good	14.675 \| good	1.077 \| good	13.555 \| good	0.207 \| good
2026-03-14T14:00:00.000Z	44 \| good	7.524 \| good	33.097 \| good	14.192 \| good	1.122 \| good	13.84 \| good	0.205 \| good
2026-03-14T15:00:00.000Z	33 \| good	5.742 \| good	25.152 \| good	19.722 \| good	1.167 \| good	14.124 \| good	0.202 \| good
2026-03-14T16:00:00.000Z	22 \| good	3.897 \| good	16.527 \| good	23.779 \| good	1.196 \| good	12.547 \| good	0.202 \| good
2026-03-14T17:00:00.000Z	24 \| good	3.289 \| good	13.799 \| good	26.282 \| good	1.225 \| good	10.969 \| good	0.202 \| good
2026-03-14T18:00:00.000Z	27 \| good	3.391 \| good	14.014 \| good	28.727 \| good	1.254 \| good	9.391 \| good	0.202 \| good
2026-03-14T19:00:00.000Z	29 \| good	4 \| good	17.182 \| good	30.889 \| good	1.117 \| good	8.25 \| good	0.192 \| good
2026-03-14T20:00:00.000Z	31 \| good	4.576 \| good	20.022 \| good	33.959 \| good	0.98 \| good	7.109 \| good	0.182 \| good
2026-03-14T21:00:00.000Z	32 \| good	4.775 \| good	21.038 \| good	35.066 \| good	0.843 \| good	5.968 \| good	0.172 \| good
2026-03-14T22:00:00.000Z	34 \| good	5.838 \| good	25.587 \| good	37.139 \| good	0.754 \| good	5.248 \| good	0.166 \| good
2026-03-14T23:00:00.000Z	38 \| good	7.396 \| good	32.827 \| good	38.22 \| good	0.666 \| good	4.528 \| good	0.16 \| good
2026-03-15T00:00:00.000Z	44 \| good	8.303 \| good	36.551 \| good	38.213 \| good	0.577 \| good	3.808 \| good	0.154 \| good
2026-03-15T01:00:00.000Z	44 \| good	7.818 \| good	34.339 \| good	34.028 \| good	0.691 \| good	8.357 \| good	0.182 \| good
2026-03-15T02:00:00.000Z	44 \| good	7.686 \| good	33.85 \| good	32.261 \| good	0.805 \| good	12.905 \| good	0.21 \| good
2026-03-15T03:00:00.000Z	33 \| good	6.341 \| good	27.81 \| good	29.391 \| good	0.919 \| good	17.453 \| good	0.238 \| good
2026-03-15T04:00:00.000Z	33 \| good	5.93 \| good	25.98 \| good	25.719 \| good	1.128 \| good	22.355 \| good	0.264 \| good
2026-03-15T05:00:00.000Z	27 \| good	5.465 \| good	23.984 \| good	23.587 \| good	1.336 \| good	27.256 \| good	0.29 \| good
2026-03-15T06:00:00.000Z	30 \| good	4.683 \| good	20.258 \| good	23.7 \| good	1.545 \| good	32.157 \| good	0.317 \| good
2026-03-15T07:00:00.000Z	29 \| good	3.653 \| good	15.647 \| good	24.082 \| good	1.531 \| good	31.43 \| good	0.312 \| good
2026-03-15T08:00:00.000Z	29 \| good	3.149 \| good	13.45 \| good	23.456 \| good	1.516 \| good	30.703 \| good	0.307 \| good
2026-03-15T09:00:00.000Z	28 \| good	3.04 \| good	12.861 \| good	20.964 \| good	1.502 \| good	29.976 \| good	0.302 \| good
2026-03-15T10:00:00.000Z	26 \| good	3.251 \| good	13.798 \| good	21.139 \| good	1.461 \| good	28.383 \| good	0.289 \| good
2026-03-15T11:00:00.000Z	25 \| good	3.657 \| good	15.384 \| good	21.264 \| good	1.42 \| good	26.79 \| good	0.276 \| good
2026-03-15T12:00:00.000Z	24 \| good	4.025 \| good	17.382 \| good	15.8 \| good	1.379 \| good	25.196 \| good	0.264 \| good
2026-03-15T13:00:00.000Z	27 \| good	4.689 \| good	20.476 \| good	13.659 \| good	1.378 \| good	24.357 \| good	0.26 \| good
2026-03-15T14:00:00.000Z	23 \| good	4.441 \| good	19.16 \| good	10.958 \| good	1.377 \| good	23.518 \| good	0.257 \| good
2026-03-15T15:00:00.000Z	27 \| good	4.806 \| good	21.109 \| good	14.112 \| good	1.377 \| good	22.68 \| good	0.254 \| good
2026-03-15T16:00:00.000Z	27 \| good	4.812 \| good	21.393 \| good	20.658 \| good	1.476 \| good	23.329 \| good	0.275 \| good
2026-03-15T17:00:00.000Z	27 \| good	4.796 \| good	20.857 \| good	24.532 \| good	1.575 \| good	23.979 \| good	0.295 \| good
2026-03-15T18:00:00.000Z	27 \| good	4.895 \| good	21.227 \| good	26.261 \| good	1.674 \| good	24.629 \| good	0.316 \| good
2026-03-15T19:00:00.000Z	27 \| good	5.143 \| good	22.468 \| good	27.334 \| good	1.677 \| good	23.732 \| good	0.311 \| good
2026-03-15T20:00:00.000Z	27 \| good	5.302 \| good	23.44 \| good	29.142 \| good	1.68 \| good	22.834 \| good	0.307 \| good
2026-03-15T21:00:00.000Z	31 \| good	4.717 \| good	20.901 \| good	32.529 \| good	1.683 \| good	21.937 \| good	0.302 \| good
2026-03-15T22:00:00.000Z	29 \| good	5.271 \| good	23.214 \| good	31.349 \| good	1.657 \| good	22.718 \| good	0.297 \| good
2026-03-15T23:00:00.000Z	33 \| good	6.47 \| good	28.686 \| good	31.727 \| good	1.631 \| good	23.499 \| good	0.291 \| good
2026-03-16T00:00:00.000Z	38 \| good	7.158 \| good	31.522 \| good	26.043 \| good	1.604 \| good	24.28 \| good	0.286 \| good
2026-03-16T01:00:00.000Z	33 \| good	6.085 \| good	27.027 \| good	25.743 \| good	1.699 \| good	27.32 \| good	0.324 \| good
2026-03-16T02:00:00.000Z	33 \| good	5.74 \| good	25.254 \| good	28.927 \| good	1.793 \| good	30.36 \| good	0.362 \| good
2026-03-16T03:00:00.000Z	38 \| good	6.649 \| good	29.486 \| good	27.538 \| good	1.887 \| good	33.4 \| good	0.4 \| good
2026-03-16T04:00:00.000Z	38 \| good	7.412 \| good	32.705 \| good	25.899 \| good	1.947 \| good	32.975 \| good	0.395 \| good
2026-03-16T05:00:00.000Z	49 \| good	8.653 \| good	38.339 \| good	23.262 \| good	2.007 \| good	32.55 \| good	0.389 \| good
2026-03-16T06:00:00.000Z	71 \| moderate	20.416 \| fine	23.875 \| good	11.676 \| good	2.104 \| good	32.781 \| good	0.389 \| good
2026-03-16T07:00:00.000Z	49 \| good	8.506 \| good	37.658 \| good	20.049 \| good	2.032 \| good	31.758 \| good	0.381 \| good

Seattle

Empower business decisions with accurate air quality data

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

0.33ppm

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

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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 09:00:00 on 2026-03-13.

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

The best air quality in Seattle, Washington was recorded at 02:00:00 on 2026-03-13.

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 9.813 μg/m³.

What are the current PM₁₀ levels at Seattle, Washington?

The current PM₁₀ levels in Seattle, Washington are 39.059 μg/m³.

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

The current carbon monoxide (CO) level in Seattle, Washington is 0.384 ppm.

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

The current sulfur dioxide (SO₂) levels in Seattle, Washington are 0.83 ppb.

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

The current ozone (O₃) levels at Seattle, Washington is 18.297 ppm.

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

The current nitrogen dioxide (NO₂) levels at Seattle, Washington is 16.144 ppb.

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