What are the current PM10 levels at Mercer Island, Washington?

The current PM10 levels in Mercer Island, Washington are 10.071 μg/m3.

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

The current sulfur dioxide (SO2) levels in Mercer Island, Washington are 0.237 ppb.

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

The current ozone (O3) levels at Mercer Island, Washington is 28.817 ppm.

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

The current nitrogen dioxide (NO2) levels at Mercer Island, Washington is 4.086 ppb.

Real-time air quality index in Mercer Island, Washington today

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

The measured PM2.5 levels in Mercer Island, Washington at present are 2.728 μg/m3.

Stay updated with real-time air quality in Mercer Island, 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

Mercer Island, Washington

Last updated: ... (Local time)

Common air pollutants in Mercer Island, Washington

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

2.73 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

10.07 μg/m³

155

255

425

605+

Ozone (O₃)

28.82 ppb

201

201+

Sulfur Dioxide (SO₂)

0.24 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.09 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.14 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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Mercer Island, Washington

Scroll To Air Quality Map

Track live Mercer Island, Washington air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-03T13:00:00.000Z	33 \| good	5.582 \| good	24.039 \| good	15.1 \| good	0.401 \| good	15.938 \| good	0.241 \| good
2026-03-03T14:00:00.000Z	33 \| good	5.811 \| good	23.475 \| good	13.618 \| good	0.121 \| good	16.077 \| good	0.318 \| good
2026-03-03T15:00:00.000Z	38 \| good	6.517 \| good	25.979 \| good	12.79 \| good	0.155 \| good	17.381 \| good	0.335 \| good
2026-03-03T16:00:00.000Z	38 \| good	6.743 \| good	26.362 \| good	8.857 \| good	0.217 \| good	16.105 \| good	0.335 \| good
2026-03-03T17:00:00.000Z	38 \| good	6.627 \| good	25.371 \| good	8.261 \| good	0.199 \| good	17.523 \| good	0.297 \| good
2026-03-03T18:00:00.000Z	38 \| good	7.225 \| good	28.646 \| good	10.047 \| good	0.358 \| good	17.795 \| good	0.335 \| good
2026-03-03T19:00:00.000Z	33 \| good	6.158 \| good	27.496 \| good	13.417 \| good	0.194 \| good	13.79 \| good	0.242 \| good
2026-03-03T20:00:00.000Z	33 \| good	5.673 \| good	25.1 \| good	14.347 \| good	0.195 \| good	10.411 \| good	0.241 \| good
2026-03-03T21:00:00.000Z	33 \| good	5.618 \| good	22.65 \| good	12.894 \| good	0.195 \| good	10.104 \| good	0.191 \| good
2026-03-03T22:00:00.000Z	27 \| good	4.608 \| good	19.111 \| good	18.969 \| good	0.195 \| good	9.692 \| good	0.188 \| good
2026-03-03T23:00:00.000Z	22 \| good	3.575 \| good	14.684 \| good	21.908 \| good	0.195 \| good	10.803 \| good	0.185 \| good
2026-03-04T00:00:00.000Z	19 \| good	2.927 \| good	11.261 \| good	19.858 \| good	0.114 \| good	12.973 \| good	0.227 \| good
2026-03-04T01:00:00.000Z	16 \| good	2.56 \| good	9.367 \| good	14.908 \| good	0.161 \| good	12.869 \| good	0.232 \| good
2026-03-04T02:00:00.000Z	13 \| good	2.189 \| good	8.071 \| good	14.253 \| good	0.178 \| good	13.029 \| good	0.189 \| good
2026-03-04T03:00:00.000Z	49 \| good	9.185 \| good	40.669 \| good	15.888 \| good	0.584 \| good	9.345 \| good	0.18 \| good
2026-03-04T04:00:00.000Z	13 \| good	1.965 \| good	7.696 \| good	11.664 \| good	0.198 \| good	13.504 \| good	0.245 \| good
2026-03-04T05:00:00.000Z	11 \| good	1.923 \| good	7.55 \| good	10.971 \| good	0.114 \| good	11.145 \| good	0.282 \| good
2026-03-04T06:00:00.000Z	22 \| good	3.672 \| good	14.305 \| good	16.922 \| good	0.11 \| good	7.607 \| good	0.282 \| good
2026-03-04T07:00:00.000Z	22 \| good	3.953 \| good	15.614 \| good	22.324 \| good	0.109 \| good	7.694 \| good	0.282 \| good
2026-03-04T08:00:00.000Z	22 \| good	4.137 \| good	15.236 \| good	19.615 \| good	0.11 \| good	11.693 \| good	0.203 \| good
2026-03-04T09:00:00.000Z	20 \| good	3.42 \| good	14.902 \| good	21.541 \| good	0.11 \| good	11.617 \| good	0.194 \| good
2026-03-04T10:00:00.000Z	22 \| good	3.851 \| good	15.037 \| good	20.668 \| good	0.11 \| good	11.939 \| good	0.194 \| good
2026-03-04T11:00:00.000Z	27 \| good	4.524 \| good	17.962 \| good	17.218 \| good	0.11 \| good	11.82 \| good	0.142 \| good
2026-03-04T12:00:00.000Z	27 \| good	4.594 \| good	20.091 \| good	19.446 \| good	0.11 \| good	11.527 \| good	0.142 \| good
2026-03-04T13:00:00.000Z	22 \| good	4.441 \| good	19.322 \| good	20.758 \| good	0.145 \| good	12.495 \| good	0.142 \| good
2026-03-04T14:00:00.000Z	19 \| good	3.209 \| good	14.036 \| good	19.522 \| good	0.147 \| good	9.275 \| good	0.142 \| good
2026-03-04T15:00:00.000Z	18 \| good	2.878 \| good	11.473 \| good	18.751 \| good	0.17 \| good	10.354 \| good	0.144 \| good
2026-03-04T16:00:00.000Z	19 \| good	3.455 \| good	13.917 \| good	20.064 \| good	0.32 \| good	11.917 \| good	0.235 \| good
2026-03-04T17:00:00.000Z	19 \| good	3.339 \| good	14.069 \| good	21.198 \| good	0.142 \| good	14.052 \| good	0.238 \| good
2026-03-04T18:00:00.000Z	19 \| good	2.68 \| good	10.483 \| good	19.992 \| good	0.127 \| good	13.322 \| good	0.15 \| good
2026-03-04T19:00:00.000Z	19 \| good	1.995 \| good	7.936 \| good	19.923 \| good	0.125 \| good	13.901 \| good	0.191 \| good
2026-03-04T20:00:00.000Z	22 \| good	1.641 \| good	6.513 \| good	23.548 \| good	0.107 \| good	11.939 \| good	0.189 \| good
2026-03-04T21:00:00.000Z	22 \| good	1.384 \| good	4.847 \| good	24.446 \| good	0.1 \| good	12.947 \| good	0.189 \| good
2026-03-04T22:00:00.000Z	21 \| good	0.886 \| good	3.513 \| good	22.837 \| good	0.135 \| good	12.893 \| good	0.145 \| good
2026-03-04T23:00:00.000Z	22 \| good	0.904 \| good	3.603 \| good	23.664 \| good	0.152 \| good	10.632 \| good	0.145 \| good
2026-03-05T00:00:00.000Z	21 \| good	1.05 \| good	3.516 \| good	22.716 \| good	0.214 \| good	9.206 \| good	0.236 \| good
2026-03-05T01:00:00.000Z	21 \| good	0.99 \| good	3.835 \| good	22.697 \| good	0.211 \| good	7.928 \| good	0.197 \| good
2026-03-05T02:00:00.000Z	23 \| good	1.282 \| good	4.086 \| good	24.964 \| good	0.234 \| good	8.323 \| good	0.197 \| good
2026-03-05T03:00:00.000Z	38 \| good	7.445 \| good	32.772 \| good	20.97 \| good	0.825 \| good	16.948 \| good	0.231 \| good
2026-03-05T04:00:00.000Z	20 \| good	1.677 \| good	6.294 \| good	21.532 \| good	0.226 \| good	9.331 \| good	0.197 \| good
2026-03-05T05:00:00.000Z	18 \| good	1.963 \| good	7.197 \| good	19.035 \| good	0.241 \| good	9.232 \| good	0.195 \| good
2026-03-05T06:00:00.000Z	18 \| good	2.763 \| good	10.596 \| good	19.09 \| good	0.319 \| good	8.699 \| good	0.195 \| good
2026-03-05T07:00:00.000Z	20 \| good	2.978 \| good	11.286 \| good	21.87 \| good	0.316 \| good	7.9 \| good	0.195 \| good
2026-03-05T08:00:00.000Z	21 \| good	2.92 \| good	11.319 \| good	23.124 \| good	0.193 \| good	4.517 \| good	0.142 \| good
2026-03-05T09:00:00.000Z	22 \| good	2.577 \| good	10.845 \| good	24.413 \| good	0.234 \| good	4.412 \| good	0.145 \| good
2026-03-05T10:00:00.000Z	22 \| good	2.225 \| good	9.248 \| good	24.115 \| good	0.204 \| good	3.909 \| good	0.145 \| good
2026-03-05T11:00:00.000Z	25 \| good	1.929 \| good	7.701 \| good	27.29 \| good	0.147 \| good	3.399 \| good	0.144 \| good
2026-03-05T12:00:00.000Z	26 \| good	1.895 \| good	7.37 \| good	28.412 \| good	0.233 \| good	3.647 \| good	0.144 \| good
2026-03-05T12:00:00.000Z	27 \| good	2.728 \| good	10.071 \| good	28.817 \| good	0.237 \| good	4.086 \| good	0.141 \| good
2026-03-05T13:00:00.000Z	29 \| good	2.964 \| good	12.71 \| good	30.8 \| good	0.504 \| good	5.601 \| good	0.167 \| good
2026-03-05T14:00:00.000Z	30 \| good	2.242 \| good	9.86 \| good	32.31 \| good	0.534 \| good	6.338 \| good	0.171 \| good
2026-03-05T15:00:00.000Z	30 \| good	2.386 \| good	9.988 \| good	32.429 \| good	0.564 \| good	7.075 \| good	0.175 \| good
2026-03-05T16:00:00.000Z	28 \| good	2.44 \| good	10.471 \| good	29.965 \| good	0.56 \| good	6.758 \| good	0.174 \| good
2026-03-05T17:00:00.000Z	28 \| good	2.504 \| good	10.707 \| good	30.245 \| good	0.556 \| good	6.44 \| good	0.172 \| good
2026-03-05T18:00:00.000Z	29 \| good	2.699 \| good	11.326 \| good	30.821 \| good	0.552 \| good	6.122 \| good	0.171 \| good
2026-03-05T19:00:00.000Z	32 \| good	2.692 \| good	11.55 \| good	34.86 \| good	0.581 \| good	5.522 \| good	0.167 \| good
2026-03-05T20:00:00.000Z	33 \| good	2.827 \| good	11.972 \| good	35.665 \| good	0.609 \| good	4.921 \| good	0.162 \| good
2026-03-05T21:00:00.000Z	31 \| good	3.283 \| good	13.717 \| good	33.728 \| good	0.637 \| good	4.321 \| good	0.158 \| good
2026-03-05T22:00:00.000Z	30 \| good	3.955 \| good	16.801 \| good	31.897 \| good	0.647 \| good	4.26 \| good	0.158 \| good
2026-03-05T23:00:00.000Z	28 \| good	4.605 \| good	20.275 \| good	30.146 \| good	0.657 \| good	4.199 \| good	0.158 \| good
2026-03-06T00:00:00.000Z	28 \| good	4.651 \| good	20.446 \| good	30.016 \| good	0.666 \| good	4.138 \| good	0.158 \| good
2026-03-06T01:00:00.000Z	33 \| good	5.844 \| good	25.943 \| good	23.212 \| good	0.75 \| good	8.023 \| good	0.184 \| good
2026-03-06T02:00:00.000Z	38 \| good	6.579 \| good	29.191 \| good	16.721 \| good	0.834 \| good	11.909 \| good	0.211 \| good
2026-03-06T03:00:00.000Z	38 \| good	7.078 \| good	31.205 \| good	15.628 \| good	0.917 \| good	15.794 \| good	0.238 \| good
2026-03-06T04:00:00.000Z	38 \| good	7.18 \| good	31.622 \| good	18.785 \| good	0.862 \| good	13.967 \| good	0.223 \| good
2026-03-06T05:00:00.000Z	38 \| good	6.776 \| good	29.696 \| good	20.431 \| good	0.807 \| good	12.14 \| good	0.209 \| good
2026-03-06T06:00:00.000Z	38 \| good	6.739 \| good	29.839 \| good	20.527 \| good	0.753 \| good	10.313 \| good	0.195 \| good
2026-03-06T07:00:00.000Z	33 \| good	6.115 \| good	26.762 \| good	25.559 \| good	0.659 \| good	8.41 \| good	0.182 \| good
2026-03-06T08:00:00.000Z	26 \| good	4.009 \| good	17.484 \| good	28.109 \| good	0.566 \| good	6.507 \| good	0.17 \| good
2026-03-06T09:00:00.000Z	29 \| good	2.945 \| good	12.396 \| good	31.195 \| good	0.473 \| good	4.604 \| good	0.158 \| good
2026-03-06T10:00:00.000Z	29 \| good	2.802 \| good	11.819 \| good	31.366 \| good	0.438 \| good	3.949 \| good	0.152 \| good
2026-03-06T11:00:00.000Z	27 \| good	2.888 \| good	12.184 \| good	29.022 \| good	0.403 \| good	3.295 \| good	0.147 \| good
2026-03-06T12:00:00.000Z	24 \| good	3.135 \| good	13.293 \| good	25.867 \| good	0.368 \| good	2.641 \| good	0.141 \| good
2026-03-06T13:00:00.000Z	22 \| good	4.008 \| good	17.232 \| good	23.968 \| good	0.398 \| good	3.521 \| good	0.146 \| good
2026-03-06T14:00:00.000Z	22 \| good	3.705 \| good	15.953 \| good	19.621 \| good	0.428 \| good	4.402 \| good	0.151 \| good
2026-03-06T15:00:00.000Z	27 \| good	5.166 \| good	22.666 \| good	14.533 \| good	0.458 \| good	5.282 \| good	0.156 \| good
2026-03-06T16:00:00.000Z	33 \| good	6.427 \| good	27.943 \| good	12.377 \| good	0.527 \| good	6.624 \| good	0.169 \| good
2026-03-06T17:00:00.000Z	33 \| good	6.309 \| good	27.549 \| good	14.234 \| good	0.595 \| good	7.965 \| good	0.182 \| good
2026-03-06T18:00:00.000Z	33 \| good	6.423 \| good	28.277 \| good	14.609 \| good	0.664 \| good	9.307 \| good	0.195 \| good
2026-03-06T19:00:00.000Z	33 \| good	5.987 \| good	26.415 \| good	16.302 \| good	0.663 \| good	8.606 \| good	0.192 \| good
2026-03-06T20:00:00.000Z	33 \| good	6.436 \| good	28.512 \| good	12.971 \| good	0.661 \| good	7.905 \| good	0.189 \| good
2026-03-06T21:00:00.000Z	44 \| good	7.674 \| good	33.927 \| good	9.047 \| good	0.66 \| good	7.204 \| good	0.186 \| good
2026-03-06T22:00:00.000Z	49 \| good	9.051 \| good	40.513 \| good	6.274 \| good	0.632 \| good	7.123 \| good	0.185 \| good
2026-03-06T23:00:00.000Z	54 \| moderate	10.652 \| good	47.329 \| good	4.403 \| good	0.603 \| good	7.042 \| good	0.183 \| good
2026-03-07T00:00:00.000Z	54 \| moderate	10.748 \| good	47.807 \| good	3.645 \| good	0.575 \| good	6.961 \| good	0.182 \| good
2026-03-07T01:00:00.000Z	58 \| moderate	12.963 \| fine	57.792 \| fine	2.645 \| good	0.58 \| good	7.374 \| good	0.184 \| good
2026-03-07T02:00:00.000Z	60 \| moderate	13.634 \| fine	60.437 \| fine	2.037 \| good	0.584 \| good	7.787 \| good	0.186 \| good
2026-03-07T03:00:00.000Z	60 \| moderate	14.453 \| fine	63.834 \| fine	2.345 \| good	0.589 \| good	8.2 \| good	0.188 \| good
2026-03-07T04:00:00.000Z	62 \| moderate	15.164 \| fine	66.603 \| fine	3.157 \| good	0.599 \| good	7.654 \| good	0.183 \| good
2026-03-07T05:00:00.000Z	62 \| moderate	14.771 \| fine	65.341 \| fine	5.775 \| good	0.609 \| good	7.108 \| good	0.178 \| good
2026-03-07T06:00:00.000Z	23 \| good	2.112 \| good	2.205 \| good	25.469 \| good	0.618 \| good	6.566 \| good	0.172 \| good
2026-03-07T07:00:00.000Z	60 \| moderate	14.386 \| fine	63.476 \| fine	5.986 \| good	0.598 \| good	5.81 \| good	0.168 \| good
2026-03-07T08:00:00.000Z	56 \| moderate	12.218 \| fine	54.45 \| good	8.944 \| good	0.575 \| good	5.058 \| good	0.163 \| good
2026-03-07T09:00:00.000Z	54 \| moderate	10.896 \| good	48.922 \| good	12.554 \| good	0.553 \| good	4.305 \| good	0.159 \| good
2026-03-07T10:00:00.000Z	52 \| moderate	9.759 \| good	43.369 \| good	17.312 \| good	0.545 \| good	4.077 \| good	0.157 \| good
2026-03-07T11:00:00.000Z	44 \| good	8.125 \| good	36.339 \| good	19.584 \| good	0.537 \| good	3.849 \| good	0.154 \| good
2026-03-07T12:00:00.000Z	23 \| good	2.275 \| good	2.673 \| good	25.155 \| good	0.526 \| good	3.616 \| good	0.152 \| good

Mercer Island

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

0.14ppm

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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Frequently asked questions

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

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

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

The worst air quality in Mercer Island, Washington was recorded at 03:00:00 on 2026-03-05.

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

The best air quality in Mercer Island, Washington was recorded at 06:00:00 on 2026-03-05.

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

The real-time air quality index in Mercer Island, Washington is 27, currently categorized as Good.

Which pollutant is found most often in Mercer Island, Washington?

The most common pollutant in Mercer Island, Washington is O3.

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

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

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

The measured PM_2.5 levels in Mercer Island, Washington at present are 2.728 μg/m³.

What are the current PM₁₀ levels at Mercer Island, Washington?

The current PM₁₀ levels in Mercer Island, Washington are 10.071 μg/m³.

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

The current carbon monoxide (CO) level in Mercer Island, Washington is 0.141 ppm.

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

The current sulfur dioxide (SO₂) levels in Mercer Island, Washington are 0.237 ppb.

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

The current ozone (O₃) levels at Mercer Island, Washington is 28.817 ppm.

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

The current nitrogen dioxide (NO₂) levels at Mercer Island, Washington is 4.086 ppb.

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