What is the current level of PM10 in Longview, Washington?

Longview, Washington currently has a PM10 concentration of 18.004 μg/m3.

What is the current level of sulfur dioxide (SO2) in Longview, Washington?

The current sulfur dioxide (SO2) concentration in Longview, Washington is 0.415 ppb.

What is the current level of ozone (O3) in Longview, Washington?

Longview, Washington currently has an ozone (O3) concentration of 9.902 ppm.

What is the current level of nitrogen dioxide (NO2) in Longview, Washington?

The current level of nitrogen dioxide (NO2) in Longview, Washington is 7.399 ppb.

Current air quality index in Longview, Washington today

Q: What is the PM2.5 concentration in Longview, Washington right now?

Longview, Washington currently has a PM2.5 concentration of 4.001 μg/m3.

Stay updated with real-time air quality in Longview, 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

Longview, Washington

Last updated: ... (Local time)

Common air pollutants in Longview, Washington

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.00 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.00 μg/m³

155

255

425

605+

Ozone (O₃)

9.90 ppb

201

201+

Sulfur Dioxide (SO₂)

0.41 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.40 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 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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Longview, Washington

Scroll To Air Quality Map

Track live Longview, Washington air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-15T17:00:00.000Z	22 \| good	3.9 \| good	17 \| good	16.28 \| good	0.366 \| good	3.817 \| good	0.129 \| good
2026-08-15T18:00:00.000Z	22 \| good	3.9 \| good	17 \| good	17.879 \| good	0.307 \| good	3.513 \| good	0.146 \| good
2026-08-15T19:00:00.000Z	22 \| good	3.9 \| good	17 \| good	19.058 \| good	0.338 \| good	4.005 \| good	0.146 \| good
2026-08-15T20:00:00.000Z	22 \| good	4 \| good	17.999 \| good	19.517 \| good	0.338 \| good	3.272 \| good	0.146 \| good
2026-08-15T21:00:00.000Z	22 \| good	4.001 \| good	18.002 \| good	18.739 \| good	0.307 \| good	3.29 \| good	0.16 \| good
2026-08-15T22:00:00.000Z	22 \| good	3.903 \| good	17.011 \| good	20.784 \| good	0.339 \| good	3.687 \| good	0.191 \| good
2026-08-15T23:00:00.000Z	22 \| good	3.804 \| good	17.017 \| good	21.962 \| good	0.339 \| good	4.712 \| good	0.208 \| good
2026-08-16T00:00:00.000Z	22 \| good	3.904 \| good	17.016 \| good	22.839 \| good	0.339 \| good	5.003 \| good	0.222 \| good
2026-08-16T01:00:00.000Z	24 \| good	3.904 \| good	17.017 \| good	25.909 \| good	0.308 \| good	3.361 \| good	0.175 \| good
2026-08-16T02:00:00.000Z	22 \| good	4.003 \| good	18.011 \| good	23.656 \| good	0.372 \| good	3.329 \| good	0.175 \| good
2026-08-16T03:00:00.000Z	22 \| good	3.903 \| good	17.014 \| good	21.484 \| good	0.34 \| good	3.562 \| good	0.175 \| good
2026-08-16T04:00:00.000Z	22 \| good	3.903 \| good	17.011 \| good	23.697 \| good	0.341 \| good	3.912 \| good	0.16 \| good
2026-08-16T05:00:00.000Z	22 \| good	4.002 \| good	18.005 \| good	21.732 \| good	0.358 \| good	6.144 \| good	0.206 \| good
2026-08-16T06:00:00.000Z	22 \| good	4.001 \| good	18.004 \| good	21.814 \| good	0.389 \| good	3.861 \| good	0.191 \| good
2026-08-16T07:00:00.000Z	22 \| good	3.901 \| good	17.007 \| good	19.21 \| good	0.387 \| good	3.899 \| good	0.191 \| good
2026-08-16T08:00:00.000Z	22 \| good	3.801 \| good	17.001 \| good	18.603 \| good	0.337 \| good	5.182 \| good	0.177 \| good
2026-08-16T09:00:00.000Z	22 \| good	3.7 \| good	15.998 \| good	16.537 \| good	0.305 \| good	3.109 \| good	0.146 \| good
2026-08-16T10:00:00.000Z	22 \| good	3.5 \| good	15.998 \| good	15.691 \| good	0.334 \| good	2.729 \| good	0.177 \| good
2026-08-16T11:00:00.000Z	16 \| good	3.5 \| good	15.995 \| good	15.451 \| good	0.166 \| good	2.864 \| good	0.146 \| good
2026-08-16T12:00:00.000Z	16 \| good	3.4 \| good	14.999 \| good	15.834 \| good	0.116 \| good	2.696 \| good	0.146 \| good
2026-08-16T13:00:00.000Z	16 \| good	3.3 \| good	14.998 \| good	15.866 \| good	0.116 \| good	2.903 \| good	0.146 \| good
2026-08-16T14:00:00.000Z	16 \| good	3.4 \| good	14.998 \| good	15.569 \| good	0.29 \| good	3.17 \| good	0.146 \| good
2026-08-16T15:00:00.000Z	16 \| good	3.5 \| good	15.994 \| good	15.739 \| good	0.305 \| good	3.348 \| good	0.177 \| good
2026-08-16T16:00:00.000Z	17 \| good	3.499 \| good	15.994 \| good	18.194 \| good	0.361 \| good	3.175 \| good	0.16 \| good
2026-08-16T17:00:00.000Z	17 \| good	3.4 \| good	14.998 \| good	18.225 \| good	0.322 \| good	3.384 \| good	0.191 \| good
2026-08-16T18:00:00.000Z	18 \| good	3.499 \| good	15.995 \| good	19.27 \| good	0.323 \| good	3.267 \| good	0.191 \| good
2026-08-16T19:00:00.000Z	19 \| good	3.5 \| good	15.995 \| good	20.22 \| good	0.323 \| good	3.475 \| good	0.191 \| good
2026-08-16T20:00:00.000Z	22 \| good	3.502 \| good	16.004 \| good	19.024 \| good	0.323 \| good	3.17 \| good	0.191 \| good
2026-08-16T21:00:00.000Z	22 \| good	3.502 \| good	16.007 \| good	20.593 \| good	0.339 \| good	3.129 \| good	0.177 \| good
2026-08-16T22:00:00.000Z	22 \| good	3.602 \| good	16.01 \| good	21.685 \| good	0.385 \| good	3.993 \| good	0.177 \| good
2026-08-16T23:00:00.000Z	22 \| good	3.603 \| good	16.011 \| good	21.004 \| good	0.416 \| good	4.304 \| good	0.177 \| good
2026-08-17T00:00:00.000Z	22 \| good	3.602 \| good	16.011 \| good	21.416 \| good	0.355 \| good	4.439 \| good	0.191 \| good
2026-08-17T01:00:00.000Z	22 \| good	3.802 \| good	17.007 \| good	20.639 \| good	0.698 \| good	5.041 \| good	0.191 \| good
2026-08-17T02:00:00.000Z	22 \| good	4.002 \| good	18.005 \| good	21.701 \| good	0.404 \| good	4.846 \| good	0.206 \| good
2026-08-17T03:00:00.000Z	49 \| good	8.895 \| good	39.066 \| good	21.667 \| good	0.241 \| good	1.531 \| good	0.149 \| good
2026-08-17T04:00:00.000Z	24 \| good	4.401 \| good	19.005 \| good	26.242 \| good	0.391 \| good	8.485 \| good	0.206 \| good
2026-08-17T05:00:00.000Z	22 \| good	4.302 \| good	19.007 \| good	22.175 \| good	0.393 \| good	8.814 \| good	0.199 \| good
2026-08-17T06:00:00.000Z	22 \| good	3.903 \| good	17.016 \| good	19.908 \| good	0.363 \| good	10.554 \| good	0.22 \| good
2026-08-17T07:00:00.000Z	22 \| good	3.704 \| good	16.019 \| good	20.694 \| good	0.363 \| good	10.811 \| good	0.22 \| good
2026-08-17T08:00:00.000Z	22 \| good	3.504 \| good	16.017 \| good	18.298 \| good	0.392 \| good	9.876 \| good	0.162 \| good
2026-08-17T09:00:00.000Z	17 \| good	3.404 \| good	15.017 \| good	17.61 \| good	0.358 \| good	6.701 \| good	0.131 \| good
2026-08-17T10:00:00.000Z	22 \| good	3.503 \| good	16.011 \| good	16.42 \| good	0.369 \| good	4.627 \| good	0.131 \| good
2026-08-17T11:00:00.000Z	22 \| good	3.602 \| good	16.01 \| good	13.743 \| good	0.199 \| good	4.567 \| good	0.146 \| good
2026-08-17T12:00:00.000Z	22 \| good	3.701 \| good	16.008 \| good	13.178 \| good	0.355 \| good	3.721 \| good	0.146 \| good
2026-08-17T13:00:00.000Z	22 \| good	3.901 \| good	17.004 \| good	13.263 \| good	0.355 \| good	5.106 \| good	0.146 \| good
2026-08-17T14:00:00.000Z	22 \| good	4.1 \| good	18.001 \| good	13.286 \| good	0.216 \| good	6.773 \| good	0.175 \| good
2026-08-17T15:00:00.000Z	22 \| good	4.001 \| good	18.004 \| good	9.902 \| good	0.415 \| good	7.399 \| good	0.206 \| good
2026-08-17T16:00:00.000Z	22 \| good	4.002 \| good	18.005 \| good	13.46 \| good	0.429 \| good	6.028 \| good	0.206 \| good
2026-08-17T16:00:00.000Z	22 \| good	4.001 \| good	18.004 \| good	9.902 \| good	0.415 \| good	7.399 \| good	0.206 \| good
2026-08-17T17:00:00.000Z	56 \| moderate	11.552 \| good	51.058 \| good	37.277 \| good	0.27 \| good	1.407 \| good	0.151 \| good
2026-08-17T18:00:00.000Z	56 \| moderate	11.861 \| good	52.804 \| good	41.883 \| good	0.31 \| good	1.011 \| good	0.154 \| good
2026-08-17T19:00:00.000Z	54 \| moderate	11.027 \| good	48.974 \| good	45.564 \| good	0.333 \| good	0.735 \| good	0.159 \| good
2026-08-17T20:00:00.000Z	52 \| moderate	9.836 \| good	43.776 \| good	45.381 \| good	0.329 \| good	0.553 \| good	0.174 \| good
2026-08-17T21:00:00.000Z	49 \| good	8.933 \| good	39.523 \| good	44.876 \| good	0.321 \| good	0.469 \| good	0.176 \| good
2026-08-17T22:00:00.000Z	44 \| good	8.412 \| good	37.289 \| good	43.106 \| good	0.315 \| good	0.435 \| good	0.177 \| good
2026-08-17T23:00:00.000Z	40 \| good	7.049 \| good	30.564 \| good	43.14 \| good	0.375 \| good	0.428 \| good	0.164 \| good
2026-08-18T00:00:00.000Z	35 \| good	6.315 \| good	27.487 \| good	38.34 \| good	0.38 \| good	0.457 \| good	0.164 \| good
2026-08-18T01:00:00.000Z	33 \| good	6.262 \| good	27.297 \| good	32.446 \| good	0.381 \| good	0.565 \| good	0.164 \| good
2026-08-18T02:00:00.000Z	38 \| good	7.149 \| good	31.514 \| good	27.076 \| good	0.372 \| good	0.792 \| good	0.165 \| good
2026-08-18T03:00:00.000Z	49 \| good	8.502 \| good	37.611 \| good	25.41 \| good	0.353 \| good	1.211 \| good	0.165 \| good
2026-08-18T04:00:00.000Z	52 \| moderate	10.133 \| good	44.539 \| good	21.496 \| good	0.313 \| good	1.992 \| good	0.191 \| good
2026-08-18T05:00:00.000Z	52 \| moderate	9.977 \| good	43.849 \| good	19.614 \| good	0.309 \| good	2.683 \| good	0.196 \| good
2026-08-18T06:00:00.000Z	49 \| good	9.156 \| good	40.412 \| good	18.803 \| good	0.315 \| good	3.127 \| good	0.199 \| good
2026-08-18T07:00:00.000Z	49 \| good	8.697 \| good	38.468 \| good	18.278 \| good	0.316 \| good	3.504 \| good	0.179 \| good
2026-08-18T08:00:00.000Z	49 \| good	8.875 \| good	39.217 \| good	17.634 \| good	0.316 \| good	3.185 \| good	0.176 \| good
2026-08-18T09:00:00.000Z	49 \| good	8.576 \| good	38.081 \| good	17.165 \| good	0.296 \| good	2.823 \| good	0.172 \| good
2026-08-18T10:00:00.000Z	44 \| good	8.284 \| good	36.675 \| good	16.813 \| good	0.265 \| good	2.529 \| good	0.168 \| good
2026-08-18T11:00:00.000Z	44 \| good	8.12 \| good	35.923 \| good	16.179 \| good	0.258 \| good	2.397 \| good	0.167 \| good
2026-08-18T12:00:00.000Z	38 \| good	6.652 \| good	28.998 \| good	20.185 \| good	0.263 \| good	2.364 \| good	0.188 \| good
2026-08-18T13:00:00.000Z	38 \| good	6.66 \| good	28.949 \| good	20.401 \| good	0.271 \| good	2.235 \| good	0.186 \| good
2026-08-18T14:00:00.000Z	33 \| good	6.168 \| good	26.965 \| good	19.728 \| good	0.263 \| good	2.304 \| good	0.187 \| good
2026-08-18T15:00:00.000Z	38 \| good	7.13 \| good	31.489 \| good	17.313 \| good	0.26 \| good	1.991 \| good	0.166 \| good
2026-08-18T16:00:00.000Z	38 \| good	6.578 \| good	28.467 \| good	18.779 \| good	0.285 \| good	1.542 \| good	0.164 \| good
2026-08-18T17:00:00.000Z	33 \| good	6.065 \| good	26.588 \| good	20.995 \| good	0.303 \| good	1.229 \| good	0.165 \| good
2026-08-18T18:00:00.000Z	27 \| good	4.698 \| good	20.737 \| good	22.931 \| good	0.303 \| good	0.947 \| good	0.165 \| good
2026-08-18T19:00:00.000Z	23 \| good	2.763 \| good	11.54 \| good	25.022 \| good	0.296 \| good	0.685 \| good	0.164 \| good
2026-08-18T20:00:00.000Z	24 \| good	2.162 \| good	9.342 \| good	26.321 \| good	0.302 \| good	0.536 \| good	0.178 \| good
2026-08-18T21:00:00.000Z	25 \| good	2.083 \| good	8.832 \| good	26.666 \| good	0.288 \| good	0.452 \| good	0.173 \| good
2026-08-18T22:00:00.000Z	26 \| good	1.988 \| good	8.562 \| good	28.255 \| good	0.276 \| good	0.414 \| good	0.164 \| good
2026-08-18T23:00:00.000Z	23 \| good	1.536 \| good	6.246 \| good	24.751 \| good	0.261 \| good	0.396 \| good	0.144 \| good
2026-08-19T00:00:00.000Z	20 \| good	1.414 \| good	5.467 \| good	22.419 \| good	0.269 \| good	0.426 \| good	0.135 \| good
2026-08-19T01:00:00.000Z	19 \| good	1.377 \| good	5.384 \| good	21.291 \| good	0.285 \| good	0.526 \| good	0.124 \| good
2026-08-19T02:00:00.000Z	19 \| good	1.489 \| good	5.706 \| good	20.28 \| good	0.304 \| good	0.728 \| good	0.112 \| good
2026-08-19T03:00:00.000Z	17 \| good	2.075 \| good	8.935 \| good	18.403 \| good	0.323 \| good	1.094 \| good	0.103 \| good
2026-08-19T04:00:00.000Z	22 \| good	3.616 \| good	15.853 \| good	18.513 \| good	0.351 \| good	1.936 \| good	0.095 \| good
2026-08-19T05:00:00.000Z	17 \| good	3.21 \| good	13.979 \| good	17.854 \| good	0.356 \| good	2.845 \| good	0.097 \| good
2026-08-19T06:00:00.000Z	16 \| good	3.354 \| good	14.102 \| good	17.263 \| good	0.368 \| good	3.505 \| good	0.099 \| good
2026-08-19T07:00:00.000Z	16 \| good	2.719 \| good	11.707 \| good	16.687 \| good	0.358 \| good	3.877 \| good	0.106 \| good
2026-08-19T08:00:00.000Z	16 \| good	2.326 \| good	10.097 \| good	17.081 \| good	0.373 \| good	3.956 \| good	0.103 \| good
2026-08-19T09:00:00.000Z	18 \| good	2.01 \| good	8.371 \| good	19.466 \| good	0.382 \| good	3.651 \| good	0.099 \| good
2026-08-19T10:00:00.000Z	19 \| good	2.043 \| good	8.281 \| good	20.314 \| good	0.349 \| good	3.393 \| good	0.096 \| good
2026-08-19T11:00:00.000Z	18 \| good	2.186 \| good	9.29 \| good	18.886 \| good	0.352 \| good	3.281 \| good	0.095 \| good
2026-08-19T12:00:00.000Z	16 \| good	2.565 \| good	10.881 \| good	17.337 \| good	0.384 \| good	2.813 \| good	0.087 \| good
2026-08-19T13:00:00.000Z	16 \| good	3.056 \| good	13.128 \| good	16.379 \| good	0.387 \| good	2.801 \| good	0.087 \| good
2026-08-19T14:00:00.000Z	16 \| good	3.431 \| good	14.609 \| good	15.109 \| good	0.401 \| good	2.479 \| good	0.087 \| good
2026-08-19T15:00:00.000Z	44 \| good	8.067 \| good	10.88 \| good	19.069 \| good	0.387 \| good	2.435 \| good	0.093 \| good
2026-08-19T16:00:00.000Z	44 \| good	8.236 \| good	11.293 \| good	21.561 \| good	0.41 \| good	1.812 \| good	0.09 \| good

Longview

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Longview, Washington

0.18ppm

How accurate is Washington, USA air quality data?

The air quality data for Washington, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for Longview, Washington get updated?

Air quality updates for Longview, Washington are available every hour.

What time in the past 24 hours saw the poorest air quality in Longview, Washington?

Longview, Washington experienced its worst air quality at 03:00:00, 2026-08-17.

When was air quality in Longview, Washington the best over the past 24 hours?

The best air quality in Longview, Washington was observed at 09:00:00 on 2026-08-17.

What is the air quality in Longview, Washington right now?

The air quality in Longview, Washington right now is Good, with an AQI of 22.

What pollutant is most frequently found in Longview, Washington?

In Longview, Washington, PM2.5 is the most frequently found pollutant.

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

When air quality in Longview, Washington is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Longview, Washington right now?

Longview, Washington currently has a PM_2.5 concentration of 4.001 μg/m³.

What is the current level of PM₁₀ in Longview, Washington?

Longview, Washington currently has a PM₁₀ concentration of 18.004 μg/m³.

What is the current level of carbon monoxide (CO) in Longview, Washington?

The current carbon monoxide (CO) level in Longview, Washington is 0.206 ppm.

What is the current level of sulfur dioxide (SO₂) in Longview, Washington?

The current sulfur dioxide (SO₂) concentration in Longview, Washington is 0.415 ppb.

What is the current level of ozone (O₃) in Longview, Washington?

Longview, Washington currently has an ozone (O₃) concentration of 9.902 ppm.

What is the current level of nitrogen dioxide (NO₂) in Longview, Washington?

The current level of nitrogen dioxide (NO₂) in Longview, Washington is 7.399 ppb.

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