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

Longview, Washington currently has a PM10 concentration of 35.936 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Longview, Washington is 0.237 ppb.

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

Longview, Washington currently has an ozone (O3) concentration of 14.625 ppm.

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

The current level of nitrogen dioxide (NO2) in Longview, Washington is 3.685 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 8.185 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)

8.19 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

35.94 μg/m³

155

255

425

605+

Ozone (O₃)

14.63 ppb

201

201+

Sulfur Dioxide (SO₂)

0.24 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.69 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.11 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
2026-03-05T12:00:00.000Z	21 \| good	0.403 \| good	2.013 \| good	22.964 \| good	0.245 \| good	4.264 \| good	0.114 \| good
2026-03-05T13:00:00.000Z	27 \| good	0.304 \| good	1.016 \| good	28.624 \| good	0.245 \| good	4.02 \| good	0.114 \| good
2026-03-05T14:00:00.000Z	25 \| good	0.303 \| good	1.016 \| good	27.404 \| good	0.243 \| good	8.768 \| good	0.129 \| good
2026-03-05T15:00:00.000Z	22 \| good	0.104 \| good	0.218 \| good	24.3 \| good	0.346 \| good	12.466 \| good	0.204 \| good
2026-03-05T16:00:00.000Z	19 \| good	0.104 \| good	0.218 \| good	20.148 \| good	0.244 \| good	14.41 \| good	0.265 \| good
2026-03-05T17:00:00.000Z	25 \| good	0.503 \| good	2.015 \| good	27.364 \| good	0.18 \| good	12.183 \| good	0.235 \| good
2026-03-05T18:00:00.000Z	24 \| good	0.903 \| good	4.012 \| good	25.597 \| good	0.391 \| good	10.563 \| good	0.221 \| good
2026-03-05T19:00:00.000Z	25 \| good	1.402 \| good	6.007 \| good	26.85 \| good	0.431 \| good	10.267 \| good	0.221 \| good
2026-03-05T20:00:00.000Z	29 \| good	1.602 \| good	7.008 \| good	31.026 \| good	0.201 \| good	9.57 \| good	0.129 \| good
2026-03-05T21:00:00.000Z	30 \| good	1.602 \| good	7.008 \| good	31.731 \| good	0.181 \| good	9.249 \| good	0.145 \| good
2026-03-05T22:00:00.000Z	30 \| good	1.403 \| good	6.011 \| good	31.579 \| good	0.17 \| good	7.955 \| good	0.145 \| good
2026-03-05T23:00:00.000Z	29 \| good	1.103 \| good	5.012 \| good	30.968 \| good	0.204 \| good	8.192 \| good	0.145 \| good
2026-03-06T00:00:00.000Z	30 \| good	0.903 \| good	4.014 \| good	32.057 \| good	0.26 \| good	5.465 \| good	0.147 \| good
2026-03-06T01:00:00.000Z	32 \| good	1.103 \| good	5.009 \| good	34.625 \| good	0.16 \| good	7.015 \| good	0.137 \| good
2026-03-06T02:00:00.000Z	31 \| good	1.202 \| good	5.009 \| good	33.026 \| good	0.16 \| good	7.798 \| good	0.147 \| good
2026-03-06T03:00:00.000Z	27 \| good	5.298 \| good	23.045 \| good	23.481 \| good	0.237 \| good	4.289 \| good	0.172 \| good
2026-03-06T04:00:00.000Z	26 \| good	1.203 \| good	5.015 \| good	27.635 \| good	0.12 \| good	5.674 \| good	0.259 \| good
2026-03-06T05:00:00.000Z	38 \| good	6.901 \| good	28.01 \| good	22.614 \| good	0.119 \| good	4.286 \| good	0.366 \| good
2026-03-06T06:00:00.000Z	33 \| good	6.387 \| good	27.782 \| good	20.527 \| good	0.176 \| good	3.89 \| good	0.357 \| good
2026-03-06T07:00:00.000Z	33 \| good	6.076 \| good	25.018 \| good	30.337 \| good	0.175 \| good	5.993 \| good	0.357 \| good
2026-03-06T08:00:00.000Z	38 \| good	7.261 \| good	26.779 \| good	34.521 \| good	0.193 \| good	8.726 \| good	0.348 \| good
2026-03-06T09:00:00.000Z	49 \| good	8.688 \| good	31.291 \| good	28.267 \| good	0.193 \| good	5.029 \| good	0.17 \| good
2026-03-06T10:00:00.000Z	49 \| good	9.107 \| good	35.449 \| good	27.097 \| good	0.252 \| good	5.705 \| good	0.179 \| good
2026-03-06T11:00:00.000Z	52 \| moderate	9.865 \| good	39.46 \| good	24.484 \| good	0.255 \| good	5.555 \| good	0.145 \| good
2026-03-06T12:00:00.000Z	44 \| good	7.978 \| good	21.337 \| good	18.766 \| good	0.159 \| good	4.237 \| good	0.1 \| good
2026-03-06T13:00:00.000Z	38 \| good	7.075 \| good	28.662 \| good	22.025 \| good	0.178 \| good	4.39 \| good	0.116 \| good
2026-03-06T14:00:00.000Z	33 \| good	5.894 \| good	21.933 \| good	25.097 \| good	0.176 \| good	4.3 \| good	0.109 \| good
2026-03-06T15:00:00.000Z	27 \| good	4.922 \| good	26.27 \| good	21.016 \| good	0.158 \| good	5.608 \| good	0.116 \| good
2026-03-06T16:00:00.000Z	22 \| good	4.019 \| good	16.011 \| good	21.431 \| good	0.257 \| good	13.174 \| good	0.204 \| good
2026-03-06T17:00:00.000Z	19 \| good	2.605 \| good	11.023 \| good	19.532 \| good	0.402 \| good	12.43 \| good	0.204 \| good
2026-03-06T18:00:00.000Z	21 \| good	1.904 \| good	8.018 \| good	23.139 \| good	0.401 \| good	11.44 \| good	0.218 \| good
2026-03-06T19:00:00.000Z	22 \| good	1.505 \| good	6.022 \| good	24.306 \| good	0.196 \| good	10.986 \| good	0.173 \| good
2026-03-06T20:00:00.000Z	24 \| good	1.404 \| good	6.019 \| good	26.038 \| good	0.116 \| good	9.775 \| good	0.173 \| good
2026-03-06T21:00:00.000Z	20 \| good	1.503 \| good	6.016 \| good	21.988 \| good	0.116 \| good	8.03 \| good	0.159 \| good
2026-03-06T22:00:00.000Z	21 \| good	1.403 \| good	6.014 \| good	23.403 \| good	0.175 \| good	8.032 \| good	0.204 \| good
2026-03-06T23:00:00.000Z	24 \| good	1.503 \| good	6.014 \| good	25.749 \| good	0.361 \| good	9.304 \| good	0.204 \| good
2026-03-07T00:00:00.000Z	22 \| good	1.503 \| good	6.015 \| good	24.104 \| good	0.519 \| good	10.338 \| good	0.218 \| good
2026-03-07T01:00:00.000Z	18 \| good	1.603 \| good	7.015 \| good	18.844 \| good	0.197 \| good	11.019 \| good	0.184 \| good
2026-03-07T02:00:00.000Z	20 \| good	1.505 \| good	6.022 \| good	22.019 \| good	0.518 \| good	11.641 \| good	0.166 \| good
2026-03-07T03:00:00.000Z	15 \| good	1.804 \| good	8.017 \| good	15.784 \| good	0.568 \| good	12.519 \| good	0.204 \| good
2026-03-07T04:00:00.000Z	14 \| good	2.303 \| good	10.014 \| good	15.23 \| good	0.873 \| good	11.279 \| good	0.204 \| good
2026-03-07T05:00:00.000Z	16 \| good	3.202 \| good	14.007 \| good	14.148 \| good	0.973 \| good	8.063 \| good	0.173 \| good
2026-03-07T06:00:00.000Z	22 \| good	4.298 \| good	18.994 \| good	13.35 \| good	0.928 \| good	8.269 \| good	0.173 \| good
2026-03-07T07:00:00.000Z	22 \| good	4.199 \| good	18.993 \| good	11.353 \| good	0.824 \| good	8.166 \| good	0.173 \| good
2026-03-07T08:00:00.000Z	27 \| good	4.598 \| good	19.995 \| good	14.968 \| good	0.39 \| good	8.612 \| good	0.175 \| good
2026-03-07T09:00:00.000Z	27 \| good	5.396 \| good	22.986 \| good	15.069 \| good	0.361 \| good	4.753 \| good	0.114 \| good
2026-03-07T10:00:00.000Z	38 \| good	6.791 \| good	29.961 \| good	15.059 \| good	0.284 \| good	4.399 \| good	0.114 \| good
2026-03-07T11:00:00.000Z	44 \| good	8.185 \| good	35.936 \| good	14.625 \| good	0.237 \| good	3.685 \| good	0.114 \| good
2026-03-07T11:00:00.000Z	44 \| good	8.185 \| good	35.936 \| good	14.625 \| good	0.237 \| good	3.685 \| good	0.114 \| good
2026-03-07T12:00:00.000Z	49 \| good	8.901 \| good	39.678 \| good	9.455 \| good	0.476 \| good	6.879 \| good	0.196 \| good
2026-03-07T13:00:00.000Z	44 \| good	7.726 \| good	33.961 \| good	10.977 \| good	0.468 \| good	6.898 \| good	0.197 \| good
2026-03-07T14:00:00.000Z	33 \| good	6.18 \| good	27.112 \| good	11.588 \| good	0.46 \| good	6.917 \| good	0.198 \| good
2026-03-07T15:00:00.000Z	33 \| good	6.322 \| good	27.646 \| good	13.095 \| good	0.452 \| good	6.935 \| good	0.199 \| good
2026-03-07T16:00:00.000Z	27 \| good	5.112 \| good	21.913 \| good	13.593 \| good	0.434 \| good	6.038 \| good	0.189 \| good
2026-03-07T17:00:00.000Z	33 \| good	5.77 \| good	25.218 \| good	13.332 \| good	0.417 \| good	5.141 \| good	0.178 \| good
2026-03-07T18:00:00.000Z	33 \| good	5.81 \| good	25.329 \| good	12.885 \| good	0.399 \| good	4.244 \| good	0.168 \| good
2026-03-07T19:00:00.000Z	33 \| good	6.13 \| good	26.643 \| good	12.855 \| good	0.349 \| good	3.589 \| good	0.157 \| good
2026-03-07T20:00:00.000Z	33 \| good	6.479 \| good	28.211 \| good	15.063 \| good	0.299 \| good	2.935 \| good	0.146 \| good
2026-03-07T21:00:00.000Z	33 \| good	5.996 \| good	26.468 \| good	17.411 \| good	0.249 \| good	2.28 \| good	0.135 \| good
2026-03-07T22:00:00.000Z	33 \| good	5.972 \| good	26.28 \| good	17.608 \| good	0.22 \| good	2.102 \| good	0.131 \| good
2026-03-07T23:00:00.000Z	33 \| good	6.257 \| good	27.284 \| good	16.049 \| good	0.192 \| good	1.924 \| good	0.127 \| good
2026-03-08T00:00:00.000Z	33 \| good	6.343 \| good	27.79 \| good	15.573 \| good	0.164 \| good	1.746 \| good	0.122 \| good
2026-03-08T01:00:00.000Z	27 \| good	5.04 \| good	21.805 \| good	15.35 \| good	0.205 \| good	3.058 \| good	0.135 \| good
2026-03-08T02:00:00.000Z	38 \| good	6.725 \| good	29.338 \| good	14.917 \| good	0.247 \| good	4.37 \| good	0.148 \| good
2026-03-08T03:00:00.000Z	38 \| good	7.345 \| good	32.297 \| good	13.241 \| good	0.289 \| good	5.682 \| good	0.161 \| good
2026-03-08T04:00:00.000Z	38 \| good	6.954 \| good	30.293 \| good	14.87 \| good	0.318 \| good	5.569 \| good	0.159 \| good
2026-03-08T05:00:00.000Z	38 \| good	6.568 \| good	28.549 \| good	14.837 \| good	0.347 \| good	5.456 \| good	0.157 \| good
2026-03-08T06:00:00.000Z	38 \| good	7.221 \| good	32.06 \| good	15.032 \| good	0.376 \| good	5.343 \| good	0.155 \| good
2026-03-08T07:00:00.000Z	33 \| good	5.667 \| good	24.893 \| good	16.015 \| good	0.33 \| good	4.567 \| good	0.147 \| good
2026-03-08T08:00:00.000Z	38 \| good	6.519 \| good	28.952 \| good	16.376 \| good	0.285 \| good	3.792 \| good	0.138 \| good
2026-03-08T09:00:00.000Z	38 \| good	6.525 \| good	28.613 \| good	16.956 \| good	0.239 \| good	3.016 \| good	0.129 \| good
2026-03-08T10:00:00.000Z	38 \| good	6.904 \| good	30.276 \| good	15.785 \| good	0.235 \| good	2.984 \| good	0.127 \| good
2026-03-08T11:00:00.000Z	38 \| good	6.963 \| good	30.582 \| good	14.684 \| good	0.23 \| good	2.952 \| good	0.125 \| good
2026-03-08T12:00:00.000Z	38 \| good	7.161 \| good	31.442 \| good	14.289 \| good	0.226 \| good	2.92 \| good	0.123 \| good
2026-03-08T13:00:00.000Z	33 \| good	6.28 \| good	27.458 \| good	16.721 \| good	0.246 \| good	3.065 \| good	0.124 \| good
2026-03-08T14:00:00.000Z	27 \| good	5.149 \| good	22.632 \| good	18.812 \| good	0.266 \| good	3.21 \| good	0.125 \| good
2026-03-08T15:00:00.000Z	27 \| good	5.464 \| good	23.886 \| good	19.514 \| good	0.287 \| good	3.355 \| good	0.125 \| good
2026-03-08T16:00:00.000Z	22 \| good	3.998 \| good	17.12 \| good	20.223 \| good	0.301 \| good	3.246 \| good	0.127 \| good
2026-03-08T17:00:00.000Z	22 \| good	3.916 \| good	16.605 \| good	20.34 \| good	0.316 \| good	3.136 \| good	0.129 \| good
2026-03-08T18:00:00.000Z	22 \| good	3.662 \| good	15.62 \| good	20.784 \| good	0.33 \| good	3.027 \| good	0.13 \| good
2026-03-08T19:00:00.000Z	23 \| good	3.229 \| good	13.865 \| good	25.113 \| good	0.289 \| good	2.225 \| good	0.13 \| good
2026-03-08T20:00:00.000Z	30 \| good	2.402 \| good	10.216 \| good	32.343 \| good	0.248 \| good	1.423 \| good	0.129 \| good
2026-03-08T21:00:00.000Z	32 \| good	2.012 \| good	8.696 \| good	34.563 \| good	0.206 \| good	0.621 \| good	0.129 \| good
2026-03-08T22:00:00.000Z	32 \| good	1.961 \| good	7.938 \| good	35.214 \| good	0.191 \| good	0.571 \| good	0.13 \| good
2026-03-08T23:00:00.000Z	33 \| good	2.22 \| good	9.228 \| good	35.707 \| good	0.175 \| good	0.522 \| good	0.13 \| good
2026-03-09T00:00:00.000Z	33 \| good	1.962 \| good	8.383 \| good	35.934 \| good	0.16 \| good	0.472 \| good	0.131 \| good
2026-03-09T01:00:00.000Z	31 \| good	1.759 \| good	7.797 \| good	33.842 \| good	0.165 \| good	0.76 \| good	0.135 \| good
2026-03-09T02:00:00.000Z	28 \| good	2.43 \| good	10.176 \| good	29.681 \| good	0.171 \| good	1.048 \| good	0.139 \| good
2026-03-09T03:00:00.000Z	26 \| good	3.553 \| good	15.718 \| good	27.69 \| good	0.176 \| good	1.337 \| good	0.143 \| good
2026-03-09T04:00:00.000Z	26 \| good	3.493 \| good	15.121 \| good	28.047 \| good	0.205 \| good	1.61 \| good	0.146 \| good
2026-03-09T05:00:00.000Z	26 \| good	3.028 \| good	12.95 \| good	28.324 \| good	0.234 \| good	1.884 \| good	0.15 \| good
2026-03-09T06:00:00.000Z	36 \| good	6.428 \| good	9.663 \| good	39.239 \| good	0.264 \| good	2.166 \| good	0.153 \| good
2026-03-09T07:00:00.000Z	26 \| good	3.174 \| good	13.503 \| good	28.199 \| good	0.268 \| good	2.254 \| good	0.154 \| good
2026-03-09T08:00:00.000Z	25 \| good	4.164 \| good	17.875 \| good	26.651 \| good	0.274 \| good	2.351 \| good	0.155 \| good
2026-03-09T09:00:00.000Z	24 \| good	4.073 \| good	17.752 \| good	26.282 \| good	0.28 \| good	2.447 \| good	0.156 \| good
2026-03-09T10:00:00.000Z	23 \| good	4.121 \| good	17.875 \| good	24.523 \| good	0.278 \| good	2.349 \| good	0.153 \| good
2026-03-09T11:00:00.000Z	21 \| good	3.31 \| good	14.24 \| good	22.856 \| good	0.276 \| good	2.251 \| good	0.15 \| good

Longview

Empower business decisions with accurate air quality data

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

0.10ppm

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 11:00:00, 2026-03-06.

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

The best air quality in Longview, Washington was observed at 04:00:00 on 2026-03-07.

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

The air quality in Longview, Washington right now is Good, with an AQI of 44.

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 8.185 μg/m³.

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

Longview, Washington currently has a PM₁₀ concentration of 35.936 μg/m³.

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

The current carbon monoxide (CO) level in Longview, Washington is 0.114 ppm.

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

The current sulfur dioxide (SO₂) concentration in Longview, Washington is 0.237 ppb.

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

Longview, Washington currently has an ozone (O₃) concentration of 14.625 ppm.

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

The current level of nitrogen dioxide (NO₂) in Longview, Washington is 3.685 ppb.

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