What is the sulfur dioxide (SO2) level in Walla Walla, Washington at the moment?

Currently, Walla Walla, Washington has a sulfur dioxide (SO2) concentration of 3.988 ppb.

What is the ozone (O3) level in Walla Walla, Washington at the moment?

The current ozone (O3) level in Walla Walla, Washington at the moment is 26.709 ppm.

What is the nitrogen dioxide (NO2) level in Walla Walla, Washington at the moment?

Nitrogen dioxide (NO2) level in Walla Walla, Washington at the moment is 5.434 ppb.

Live air quality index in Walla Walla, Washington today

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

Stay updated with real-time air quality in Walla Walla, 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

Walla Walla, Washington

Last updated: ... (Local time)

Major air pollutants in Walla Walla, Washington

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

23.39 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

102.87 μg/m³

155

255

425

605+

Ozone (O₃)

26.71 ppb

201

201+

Sulfur Dioxide (SO₂)

3.99 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.43 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.34 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Walla Walla, Washington

Get Live Pollen Counts

Walla Walla, Washington

Scroll To Air Quality Map

Track live Walla Walla, Washington air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-04T00:00:00.000Z	60 \| moderate	14.4 \| fine	65 \| fine	52.949 \| good	1.108 \| good	6.283 \| good	0.2 \| good
2025-09-04T01:00:00.000Z	66 \| moderate	17.2 \| fine	77 \| fine	42.628 \| good	1.382 \| good	7.036 \| good	0.213 \| good
2025-09-04T02:00:00.000Z	73 \| moderate	21.2 \| fine	93 \| fine	50.603 \| good	0.54 \| good	7.989 \| good	0.213 \| good
2025-09-04T03:00:00.000Z	79 \| moderate	23.8 \| fine	105 \| fine	42.531 \| good	1.169 \| good	16.625 \| good	0.295 \| good
2025-09-04T04:00:00.000Z	79 \| moderate	24.1 \| fine	105 \| fine	40.274 \| good	1.137 \| good	14.851 \| good	0.276 \| good
2025-09-04T05:00:00.000Z	71 \| moderate	20 \| fine	89 \| fine	38.149 \| good	0.444 \| good	13.004 \| good	0.301 \| good
2025-09-04T06:00:00.000Z	66 \| moderate	17.4 \| fine	77 \| fine	36.51 \| good	0.299 \| good	12.026 \| good	0.239 \| good
2025-09-04T07:00:00.000Z	64 \| moderate	15.6 \| fine	69 \| fine	27.848 \| good	0.386 \| good	8.431 \| good	0.245 \| good
2025-09-04T08:00:00.000Z	62 \| moderate	15.1 \| fine	67 \| fine	18.395 \| good	0.37 \| good	7.92 \| good	0.224 \| good
2025-09-04T09:00:00.000Z	64 \| moderate	15.9 \| fine	71 \| fine	29.666 \| good	0.339 \| good	9.543 \| good	0.188 \| good
2025-09-04T10:00:00.000Z	64 \| moderate	15.9 \| fine	71 \| fine	22.492 \| good	0.396 \| good	10.38 \| good	0.188 \| good
2025-09-04T11:00:00.000Z	62 \| moderate	15.2 \| fine	69 \| fine	27.34 \| good	0.394 \| good	10.04 \| good	0.188 \| good
2025-09-04T12:00:00.000Z	60 \| moderate	14.2 \| fine	63 \| fine	13.735 \| good	0.34 \| good	9.719 \| good	0.188 \| good
2025-09-04T13:00:00.000Z	58 \| moderate	13.257 \| fine	58.942 \| fine	25.779 \| good	0.27 \| good	3.267 \| good	0.229 \| good
2025-09-04T14:00:00.000Z	58 \| moderate	13.2 \| fine	59 \| fine	20.182 \| good	0.27 \| good	11.507 \| good	0.182 \| good
2025-09-04T15:00:00.000Z	62 \| moderate	14.8 \| fine	67 \| fine	15.075 \| good	0.323 \| good	13.088 \| good	0.183 \| good
2025-09-04T16:00:00.000Z	60 \| moderate	14.1 \| fine	63 \| fine	29.473 \| good	0.429 \| good	13.631 \| good	0.221 \| good
2025-09-04T17:00:00.000Z	60 \| moderate	13.7 \| fine	61 \| fine	30.386 \| good	1.131 \| good	11.147 \| good	0.27 \| good
2025-09-04T18:00:00.000Z	58 \| moderate	13.4 \| fine	61 \| fine	30.896 \| good	1.303 \| good	8.562 \| good	0.231 \| good
2025-09-04T19:00:00.000Z	60 \| moderate	13.8 \| fine	63 \| fine	32.96 \| good	3.201 \| good	7.505 \| good	0.2 \| good
2025-09-04T20:00:00.000Z	60 \| moderate	14.4 \| fine	65 \| fine	38.814 \| good	2.56 \| good	5.534 \| good	0.2 \| good
2025-09-04T21:00:00.000Z	60 \| moderate	13.8 \| fine	63 \| fine	36.593 \| good	1.85 \| good	7.861 \| good	0.194 \| good
2025-09-04T22:00:00.000Z	60 \| moderate	13.7 \| fine	61 \| fine	45.089 \| good	1.419 \| good	8.493 \| good	0.231 \| good
2025-09-04T23:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	45.8 \| good	1.905 \| good	8.298 \| good	0.256 \| good
2025-09-05T00:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	49.363 \| good	1.941 \| good	6.689 \| good	0.257 \| good
2025-09-05T01:00:00.000Z	60 \| moderate	14.2 \| fine	63 \| fine	49.578 \| good	3.076 \| good	8.699 \| good	0.257 \| good
2025-09-05T02:00:00.000Z	60 \| moderate	14 \| fine	63 \| fine	45.485 \| good	1.266 \| good	12.78 \| good	0.315 \| good
2025-09-05T03:00:00.000Z	60 \| moderate	13.9 \| fine	63 \| fine	37.091 \| good	1.163 \| good	15.609 \| good	0.321 \| good
2025-09-05T04:00:00.000Z	71 \| moderate	20.2 \| fine	89 \| fine	39.517 \| good	0.518 \| good	14.7 \| good	0.321 \| good
2025-09-05T05:00:00.000Z	67 \| moderate	18.3 \| fine	81 \| fine	32.156 \| good	0.243 \| good	15.993 \| good	0.364 \| good
2025-09-05T06:00:00.000Z	71 \| moderate	19.6 \| fine	87 \| fine	28.271 \| good	0.265 \| good	19.758 \| good	0.415 \| good
2025-09-05T07:00:00.000Z	71 \| moderate	20.4 \| fine	89 \| fine	28.697 \| good	0.455 \| good	16.416 \| good	0.308 \| good
2025-09-05T08:00:00.000Z	73 \| moderate	20.9 \| fine	93 \| fine	27.586 \| good	0.184 \| good	15.399 \| good	0.271 \| good
2025-09-05T09:00:00.000Z	75 \| moderate	22.1 \| fine	97 \| fine	27.544 \| good	0.347 \| good	12.156 \| good	0.228 \| good
2025-09-05T10:00:00.000Z	79 \| moderate	23.7 \| fine	103 \| fine	29.664 \| good	0.255 \| good	10.421 \| good	0.228 \| good
2025-09-05T11:00:00.000Z	79 \| moderate	24.2 \| fine	105 \| fine	25.816 \| good	0.21 \| good	9.354 \| good	0.183 \| good
2025-09-05T12:00:00.000Z	77 \| moderate	23.4 \| fine	103 \| fine	23.739 \| good	0.252 \| good	9.74 \| good	0.226 \| good
2025-09-05T13:00:00.000Z	77 \| moderate	22.7 \| fine	99 \| fine	22.268 \| good	0.353 \| good	12.469 \| good	0.226 \| good
2025-09-05T14:00:00.000Z	77 \| moderate	22.7 \| fine	99 \| fine	17.475 \| good	0.325 \| good	15.002 \| good	0.263 \| good
2025-09-05T15:00:00.000Z	77 \| moderate	22.6 \| fine	99 \| fine	17.679 \| good	0.416 \| good	15.371 \| good	0.326 \| good
2025-09-05T16:00:00.000Z	81 \| moderate	24.5 \| fine	107 \| fine	19.188 \| good	0.424 \| good	13.422 \| good	0.303 \| good
2025-09-05T17:00:00.000Z	81 \| moderate	25.4 \| fine	111 \| fine	23.466 \| good	1.114 \| good	10.14 \| good	0.258 \| good
2025-09-05T18:00:00.000Z	79 \| moderate	24.3 \| fine	107 \| fine	18.067 \| good	1.106 \| good	8.911 \| good	0.239 \| good
2025-09-05T19:00:00.000Z	79 \| moderate	23.6 \| fine	103 \| fine	32.084 \| good	1.159 \| good	7.092 \| good	0.257 \| good
2025-09-05T20:00:00.000Z	77 \| moderate	22.6 \| fine	99 \| fine	33.725 \| good	1.921 \| good	6.701 \| good	0.238 \| good
2025-09-05T21:00:00.000Z	75 \| moderate	22.2 \| fine	97 \| fine	37.803 \| good	1.692 \| good	6.16 \| good	0.278 \| good
2025-09-05T22:00:00.000Z	77 \| moderate	23.4 \| fine	103 \| fine	26.667 \| good	3.987 \| good	5.429 \| good	0.337 \| good
2025-09-05T23:00:00.000Z	77 \| moderate	23.392 \| fine	102.869 \| fine	26.709 \| good	3.988 \| good	5.434 \| good	0.337 \| good
2025-09-03T05:00:00.000Z	62 \| moderate	14.707 \| fine	64.975 \| fine	23.655 \| good	0.253 \| good	5.393 \| good	0.215 \| good
2025-09-03T06:00:00.000Z	60 \| moderate	13.767 \| fine	61.009 \| fine	22.931 \| good	0.259 \| good	5.867 \| good	0.221 \| good
2025-09-03T07:00:00.000Z	60 \| moderate	13.592 \| fine	60.931 \| fine	24.002 \| good	0.227 \| good	6.098 \| good	0.225 \| good
2025-09-03T08:00:00.000Z	58 \| moderate	12.957 \| fine	58.919 \| fine	23.278 \| good	0.196 \| good	6.33 \| good	0.228 \| good
2025-09-03T09:00:00.000Z	58 \| moderate	12.965 \| fine	58.919 \| fine	23.345 \| good	0.165 \| good	6.562 \| good	0.232 \| good
2025-09-03T10:00:00.000Z	60 \| moderate	14.077 \| fine	62.906 \| fine	21.868 \| good	0.154 \| good	6.521 \| good	0.23 \| good
2025-09-03T11:00:00.000Z	58 \| moderate	13.42 \| fine	60.87 \| fine	20.397 \| good	0.143 \| good	6.481 \| good	0.227 \| good
2025-09-03T12:00:00.000Z	58 \| moderate	12.784 \| fine	56.972 \| fine	22.285 \| good	0.132 \| good	6.44 \| good	0.225 \| good
2025-09-03T13:00:00.000Z	58 \| moderate	13.257 \| fine	58.949 \| fine	21.076 \| good	0.126 \| good	5.829 \| good	0.228 \| good
2025-09-03T14:00:00.000Z	60 \| moderate	13.9 \| fine	62.882 \| fine	18.513 \| good	0.12 \| good	5.218 \| good	0.23 \| good
2025-09-03T15:00:00.000Z	58 \| moderate	13.347 \| fine	60.891 \| fine	18.93 \| good	0.115 \| good	4.607 \| good	0.232 \| good
2025-09-03T16:00:00.000Z	58 \| moderate	12.996 \| fine	58.949 \| fine	25.939 \| good	0.166 \| good	3.574 \| good	0.214 \| good
2025-09-03T17:00:00.000Z	58 \| moderate	12.777 \| fine	57.005 \| fine	36.96 \| good	0.217 \| good	2.541 \| good	0.195 \| good
2025-09-03T18:00:00.000Z	58 \| moderate	12.515 \| fine	56.924 \| fine	34.882 \| good	0.268 \| good	1.508 \| good	0.177 \| good
2025-09-03T19:00:00.000Z	56 \| moderate	12.003 \| good	53.918 \| good	38.164 \| good	0.263 \| good	1.269 \| good	0.173 \| good
2025-09-03T20:00:00.000Z	56 \| moderate	11.85 \| good	51.986 \| good	45.283 \| good	0.258 \| good	1.029 \| good	0.169 \| good
2025-09-03T21:00:00.000Z	52 \| moderate	10.355 \| good	45.957 \| good	47.905 \| good	0.253 \| good	0.789 \| good	0.166 \| good
2025-09-03T22:00:00.000Z	49 \| good	9.195 \| good	40.991 \| good	50.337 \| good	0.233 \| good	0.737 \| good	0.16 \| good
2025-09-03T23:00:00.000Z	49 \| good	9.431 \| good	41.977 \| good	50.273 \| good	0.214 \| good	0.686 \| good	0.154 \| good
2025-09-04T00:00:00.000Z	54 \| moderate	11.064 \| good	48.929 \| good	48.476 \| good	0.194 \| good	0.634 \| good	0.147 \| good
2025-09-04T01:00:00.000Z	56 \| moderate	12.331 \| fine	54.876 \| good	40.906 \| good	0.201 \| good	1.65 \| good	0.157 \| good
2025-09-04T02:00:00.000Z	56 \| moderate	12.444 \| fine	56.755 \| fine	31.4 \| good	0.208 \| good	2.666 \| good	0.167 \| good
2025-09-04T03:00:00.000Z	56 \| moderate	12.363 \| fine	56.698 \| fine	25.278 \| good	0.216 \| good	3.682 \| good	0.176 \| good
2025-09-04T04:00:00.000Z	54 \| moderate	11.013 \| good	48.867 \| good	24.74 \| good	0.223 \| good	3.906 \| good	0.177 \| good
2025-09-04T05:00:00.000Z	54 \| moderate	10.542 \| good	46.901 \| good	24.978 \| good	0.23 \| good	4.129 \| good	0.178 \| good
2025-09-04T06:00:00.000Z	54 \| moderate	11.179 \| good	49.883 \| good	23.955 \| good	0.237 \| good	4.352 \| good	0.178 \| good
2025-09-04T07:00:00.000Z	52 \| moderate	10.236 \| good	44.979 \| good	23.746 \| good	0.23 \| good	4.488 \| good	0.179 \| good
2025-09-04T08:00:00.000Z	52 \| moderate	10.382 \| good	45.919 \| good	23.597 \| good	0.223 \| good	4.623 \| good	0.18 \| good
2025-09-04T09:00:00.000Z	52 \| moderate	10.393 \| good	45.958 \| good	23.424 \| good	0.215 \| good	4.758 \| good	0.181 \| good
2025-09-04T10:00:00.000Z	54 \| moderate	11.352 \| good	49.98 \| good	22.528 \| good	0.21 \| good	4.617 \| good	0.178 \| good
2025-09-04T11:00:00.000Z	54 \| moderate	11.267 \| good	49.934 \| good	20.262 \| good	0.204 \| good	4.476 \| good	0.176 \| good
2025-09-04T12:00:00.000Z	56 \| moderate	12.311 \| fine	54.996 \| good	22.255 \| good	0.198 \| good	4.335 \| good	0.173 \| good
2025-09-04T13:00:00.000Z	58 \| moderate	13.431 \| fine	60.881 \| fine	19.216 \| good	0.187 \| good	4.167 \| good	0.174 \| good
2025-09-04T14:00:00.000Z	62 \| moderate	15.064 \| fine	66.953 \| fine	17.409 \| good	0.177 \| good	3.998 \| good	0.174 \| good
2025-09-04T15:00:00.000Z	67 \| moderate	17.587 \| fine	78.856 \| fine	27.028 \| good	0.166 \| good	3.83 \| good	0.175 \| good
2025-09-04T16:00:00.000Z	66 \| moderate	17.093 \| fine	75.099 \| fine	35.195 \| good	0.206 \| good	2.878 \| good	0.168 \| good
2025-09-04T17:00:00.000Z	64 \| moderate	16.436 \| fine	73.043 \| fine	41.696 \| good	0.245 \| good	1.926 \| good	0.161 \| good
2025-09-04T18:00:00.000Z	64 \| moderate	15.56 \| fine	69.118 \| fine	44.581 \| good	0.285 \| good	0.975 \| good	0.154 \| good
2025-09-04T19:00:00.000Z	64 \| moderate	16.295 \| fine	72.98 \| fine	49.239 \| good	0.267 \| good	0.824 \| good	0.15 \| good
2025-09-04T20:00:00.000Z	66 \| moderate	17.048 \| fine	75.103 \| fine	50.343 \| good	0.249 \| good	0.674 \| good	0.147 \| good
2025-09-04T21:00:00.000Z	66 \| moderate	17.2 \| fine	76.959 \| fine	56.603 \| fine	0.231 \| good	0.523 \| good	0.143 \| good
2025-09-04T22:00:00.000Z	67 \| moderate	17.267 \| fine	76.886 \| fine	60.13 \| fine	0.211 \| good	0.496 \| good	0.138 \| good
2025-09-04T23:00:00.000Z	66 \| moderate	17.099 \| fine	76.846 \| fine	58.071 \| fine	0.191 \| good	0.469 \| good	0.134 \| good
2025-09-05T00:00:00.000Z	87 \| moderate	8.215 \| good	8.937 \| good	66.065 \| fine	0.172 \| good	0.442 \| good	0.129 \| good
2025-09-05T01:00:00.000Z	69 \| moderate	18.76 \| fine	82.815 \| fine	45.386 \| good	0.175 \| good	1.409 \| good	0.138 \| good
2025-09-05T02:00:00.000Z	69 \| moderate	19.001 \| fine	84.744 \| fine	35.673 \| good	0.178 \| good	2.377 \| good	0.146 \| good
2025-09-05T03:00:00.000Z	67 \| moderate	18.007 \| fine	78.911 \| fine	30.185 \| good	0.181 \| good	3.345 \| good	0.154 \| good
2025-09-05T04:00:00.000Z	66 \| moderate	17.257 \| fine	76.861 \| fine	27.434 \| good	0.194 \| good	3.814 \| good	0.158 \| good

Walla Walla

Get reliable air quality data to drive your business

Walla Walla, Washington air quality map: Stay updated on AQI near you

0.20ppm

How accurate is Washington, USA air quality data?

Air quality and pollutant data for Washington, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Walla Walla, Washington?

The air quality information for Walla Walla, Washington is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Walla Walla, Washington at its worst?

In the past 24 hours, the air quality in Walla Walla, Washington was at its worst at 05:00:00 on 2025-09-05.

When did Walla Walla, Washington experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Walla Walla, Washington was observed at 03:00:00 on 2025-09-05.

What is the AQI in Walla Walla, Washington right now?

As of now, the AQI in Walla Walla, Washington is 77, indicating Moderate conditions.

What is the most common type of pollution in Walla Walla, Washington?

Walla Walla, Washington air has the highest levels of PM2.5.

What should I do in case of poor air quality in Walla Walla, Washington?

Poor air quality in Walla Walla, Washington means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Walla Walla, Washington at the moment?

PM_2.5 levels in Walla Walla, Washington are currently 23.392 μg/m³.

What is the PM₁₀ level in Walla Walla, Washington at the moment?

The PM₁₀ concentration in Walla Walla, Washington is 102.869 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Walla Walla, Washington at the moment?

The current carbon monoxide (CO) concentration in Walla Walla, Washington is 0.337 ppm.

What is the sulfur dioxide (SO₂) level in Walla Walla, Washington at the moment?

Currently, Walla Walla, Washington has a sulfur dioxide (SO₂) concentration of 3.988 ppb.

What is the ozone (O₃) level in Walla Walla, Washington at the moment?

The current ozone (O₃) level in Walla Walla, Washington at the moment is 26.709 ppm.

What is the nitrogen dioxide (NO₂) level in Walla Walla, Washington at the moment?

Nitrogen dioxide (NO₂) level in Walla Walla, Washington at the moment is 5.434 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-04T00:00:00.000Z	60 \| moderate	14.4 \| fine	65 \| fine	52.949 \| good	1.108 \| good	6.283 \| good	0.2 \| good
2025-09-04T01:00:00.000Z	66 \| moderate	17.2 \| fine	77 \| fine	42.628 \| good	1.382 \| good	7.036 \| good	0.213 \| good
2025-09-04T02:00:00.000Z	73 \| moderate	21.2 \| fine	93 \| fine	50.603 \| good	0.54 \| good	7.989 \| good	0.213 \| good
2025-09-04T03:00:00.000Z	79 \| moderate	23.8 \| fine	105 \| fine	42.531 \| good	1.169 \| good	16.625 \| good	0.295 \| good
2025-09-04T04:00:00.000Z	79 \| moderate	24.1 \| fine	105 \| fine	40.274 \| good	1.137 \| good	14.851 \| good	0.276 \| good
2025-09-04T05:00:00.000Z	71 \| moderate	20 \| fine	89 \| fine	38.149 \| good	0.444 \| good	13.004 \| good	0.301 \| good
2025-09-04T06:00:00.000Z	66 \| moderate	17.4 \| fine	77 \| fine	36.51 \| good	0.299 \| good	12.026 \| good	0.239 \| good
2025-09-04T07:00:00.000Z	64 \| moderate	15.6 \| fine	69 \| fine	27.848 \| good	0.386 \| good	8.431 \| good	0.245 \| good
2025-09-04T08:00:00.000Z	62 \| moderate	15.1 \| fine	67 \| fine	18.395 \| good	0.37 \| good	7.92 \| good	0.224 \| good
2025-09-04T09:00:00.000Z	64 \| moderate	15.9 \| fine	71 \| fine	29.666 \| good	0.339 \| good	9.543 \| good	0.188 \| good
2025-09-04T10:00:00.000Z	64 \| moderate	15.9 \| fine	71 \| fine	22.492 \| good	0.396 \| good	10.38 \| good	0.188 \| good
2025-09-04T11:00:00.000Z	62 \| moderate	15.2 \| fine	69 \| fine	27.34 \| good	0.394 \| good	10.04 \| good	0.188 \| good
2025-09-04T12:00:00.000Z	60 \| moderate	14.2 \| fine	63 \| fine	13.735 \| good	0.34 \| good	9.719 \| good	0.188 \| good
2025-09-04T13:00:00.000Z	58 \| moderate	13.257 \| fine	58.942 \| fine	25.779 \| good	0.27 \| good	3.267 \| good	0.229 \| good
2025-09-04T14:00:00.000Z	58 \| moderate	13.2 \| fine	59 \| fine	20.182 \| good	0.27 \| good	11.507 \| good	0.182 \| good
2025-09-04T15:00:00.000Z	62 \| moderate	14.8 \| fine	67 \| fine	15.075 \| good	0.323 \| good	13.088 \| good	0.183 \| good
2025-09-04T16:00:00.000Z	60 \| moderate	14.1 \| fine	63 \| fine	29.473 \| good	0.429 \| good	13.631 \| good	0.221 \| good
2025-09-04T17:00:00.000Z	60 \| moderate	13.7 \| fine	61 \| fine	30.386 \| good	1.131 \| good	11.147 \| good	0.27 \| good
2025-09-04T18:00:00.000Z	58 \| moderate	13.4 \| fine	61 \| fine	30.896 \| good	1.303 \| good	8.562 \| good	0.231 \| good
2025-09-04T19:00:00.000Z	60 \| moderate	13.8 \| fine	63 \| fine	32.96 \| good	3.201 \| good	7.505 \| good	0.2 \| good
2025-09-04T20:00:00.000Z	60 \| moderate	14.4 \| fine	65 \| fine	38.814 \| good	2.56 \| good	5.534 \| good	0.2 \| good
2025-09-04T21:00:00.000Z	60 \| moderate	13.8 \| fine	63 \| fine	36.593 \| good	1.85 \| good	7.861 \| good	0.194 \| good
2025-09-04T22:00:00.000Z	60 \| moderate	13.7 \| fine	61 \| fine	45.089 \| good	1.419 \| good	8.493 \| good	0.231 \| good
2025-09-04T23:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	45.8 \| good	1.905 \| good	8.298 \| good	0.256 \| good
2025-09-05T00:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	49.363 \| good	1.941 \| good	6.689 \| good	0.257 \| good
2025-09-05T01:00:00.000Z	60 \| moderate	14.2 \| fine	63 \| fine	49.578 \| good	3.076 \| good	8.699 \| good	0.257 \| good
2025-09-05T02:00:00.000Z	60 \| moderate	14 \| fine	63 \| fine	45.485 \| good	1.266 \| good	12.78 \| good	0.315 \| good
2025-09-05T03:00:00.000Z	60 \| moderate	13.9 \| fine	63 \| fine	37.091 \| good	1.163 \| good	15.609 \| good	0.321 \| good
2025-09-05T04:00:00.000Z	71 \| moderate	20.2 \| fine	89 \| fine	39.517 \| good	0.518 \| good	14.7 \| good	0.321 \| good
2025-09-05T05:00:00.000Z	67 \| moderate	18.3 \| fine	81 \| fine	32.156 \| good	0.243 \| good	15.993 \| good	0.364 \| good
2025-09-05T06:00:00.000Z	71 \| moderate	19.6 \| fine	87 \| fine	28.271 \| good	0.265 \| good	19.758 \| good	0.415 \| good
2025-09-05T07:00:00.000Z	71 \| moderate	20.4 \| fine	89 \| fine	28.697 \| good	0.455 \| good	16.416 \| good	0.308 \| good
2025-09-05T08:00:00.000Z	73 \| moderate	20.9 \| fine	93 \| fine	27.586 \| good	0.184 \| good	15.399 \| good	0.271 \| good
2025-09-05T09:00:00.000Z	75 \| moderate	22.1 \| fine	97 \| fine	27.544 \| good	0.347 \| good	12.156 \| good	0.228 \| good
2025-09-05T10:00:00.000Z	79 \| moderate	23.7 \| fine	103 \| fine	29.664 \| good	0.255 \| good	10.421 \| good	0.228 \| good
2025-09-05T11:00:00.000Z	79 \| moderate	24.2 \| fine	105 \| fine	25.816 \| good	0.21 \| good	9.354 \| good	0.183 \| good
2025-09-05T12:00:00.000Z	77 \| moderate	23.4 \| fine	103 \| fine	23.739 \| good	0.252 \| good	9.74 \| good	0.226 \| good
2025-09-05T13:00:00.000Z	77 \| moderate	22.7 \| fine	99 \| fine	22.268 \| good	0.353 \| good	12.469 \| good	0.226 \| good
2025-09-05T14:00:00.000Z	77 \| moderate	22.7 \| fine	99 \| fine	17.475 \| good	0.325 \| good	15.002 \| good	0.263 \| good
2025-09-05T15:00:00.000Z	77 \| moderate	22.6 \| fine	99 \| fine	17.679 \| good	0.416 \| good	15.371 \| good	0.326 \| good
2025-09-05T16:00:00.000Z	81 \| moderate	24.5 \| fine	107 \| fine	19.188 \| good	0.424 \| good	13.422 \| good	0.303 \| good
2025-09-05T17:00:00.000Z	81 \| moderate	25.4 \| fine	111 \| fine	23.466 \| good	1.114 \| good	10.14 \| good	0.258 \| good
2025-09-05T18:00:00.000Z	79 \| moderate	24.3 \| fine	107 \| fine	18.067 \| good	1.106 \| good	8.911 \| good	0.239 \| good
2025-09-05T19:00:00.000Z	79 \| moderate	23.6 \| fine	103 \| fine	32.084 \| good	1.159 \| good	7.092 \| good	0.257 \| good
2025-09-05T20:00:00.000Z	77 \| moderate	22.6 \| fine	99 \| fine	33.725 \| good	1.921 \| good	6.701 \| good	0.238 \| good
2025-09-05T21:00:00.000Z	75 \| moderate	22.2 \| fine	97 \| fine	37.803 \| good	1.692 \| good	6.16 \| good	0.278 \| good
2025-09-05T22:00:00.000Z	77 \| moderate	23.4 \| fine	103 \| fine	26.667 \| good	3.987 \| good	5.429 \| good	0.337 \| good
2025-09-05T23:00:00.000Z	77 \| moderate	23.392 \| fine	102.869 \| fine	26.709 \| good	3.988 \| good	5.434 \| good	0.337 \| good
2025-09-03T05:00:00.000Z	62 \| moderate	14.707 \| fine	64.975 \| fine	23.655 \| good	0.253 \| good	5.393 \| good	0.215 \| good
2025-09-03T06:00:00.000Z	60 \| moderate	13.767 \| fine	61.009 \| fine	22.931 \| good	0.259 \| good	5.867 \| good	0.221 \| good
2025-09-03T07:00:00.000Z	60 \| moderate	13.592 \| fine	60.931 \| fine	24.002 \| good	0.227 \| good	6.098 \| good	0.225 \| good
2025-09-03T08:00:00.000Z	58 \| moderate	12.957 \| fine	58.919 \| fine	23.278 \| good	0.196 \| good	6.33 \| good	0.228 \| good
2025-09-03T09:00:00.000Z	58 \| moderate	12.965 \| fine	58.919 \| fine	23.345 \| good	0.165 \| good	6.562 \| good	0.232 \| good
2025-09-03T10:00:00.000Z	60 \| moderate	14.077 \| fine	62.906 \| fine	21.868 \| good	0.154 \| good	6.521 \| good	0.23 \| good
2025-09-03T11:00:00.000Z	58 \| moderate	13.42 \| fine	60.87 \| fine	20.397 \| good	0.143 \| good	6.481 \| good	0.227 \| good
2025-09-03T12:00:00.000Z	58 \| moderate	12.784 \| fine	56.972 \| fine	22.285 \| good	0.132 \| good	6.44 \| good	0.225 \| good
2025-09-03T13:00:00.000Z	58 \| moderate	13.257 \| fine	58.949 \| fine	21.076 \| good	0.126 \| good	5.829 \| good	0.228 \| good
2025-09-03T14:00:00.000Z	60 \| moderate	13.9 \| fine	62.882 \| fine	18.513 \| good	0.12 \| good	5.218 \| good	0.23 \| good
2025-09-03T15:00:00.000Z	58 \| moderate	13.347 \| fine	60.891 \| fine	18.93 \| good	0.115 \| good	4.607 \| good	0.232 \| good
2025-09-03T16:00:00.000Z	58 \| moderate	12.996 \| fine	58.949 \| fine	25.939 \| good	0.166 \| good	3.574 \| good	0.214 \| good
2025-09-03T17:00:00.000Z	58 \| moderate	12.777 \| fine	57.005 \| fine	36.96 \| good	0.217 \| good	2.541 \| good	0.195 \| good
2025-09-03T18:00:00.000Z	58 \| moderate	12.515 \| fine	56.924 \| fine	34.882 \| good	0.268 \| good	1.508 \| good	0.177 \| good
2025-09-03T19:00:00.000Z	56 \| moderate	12.003 \| good	53.918 \| good	38.164 \| good	0.263 \| good	1.269 \| good	0.173 \| good
2025-09-03T20:00:00.000Z	56 \| moderate	11.85 \| good	51.986 \| good	45.283 \| good	0.258 \| good	1.029 \| good	0.169 \| good
2025-09-03T21:00:00.000Z	52 \| moderate	10.355 \| good	45.957 \| good	47.905 \| good	0.253 \| good	0.789 \| good	0.166 \| good
2025-09-03T22:00:00.000Z	49 \| good	9.195 \| good	40.991 \| good	50.337 \| good	0.233 \| good	0.737 \| good	0.16 \| good
2025-09-03T23:00:00.000Z	49 \| good	9.431 \| good	41.977 \| good	50.273 \| good	0.214 \| good	0.686 \| good	0.154 \| good
2025-09-04T00:00:00.000Z	54 \| moderate	11.064 \| good	48.929 \| good	48.476 \| good	0.194 \| good	0.634 \| good	0.147 \| good
2025-09-04T01:00:00.000Z	56 \| moderate	12.331 \| fine	54.876 \| good	40.906 \| good	0.201 \| good	1.65 \| good	0.157 \| good
2025-09-04T02:00:00.000Z	56 \| moderate	12.444 \| fine	56.755 \| fine	31.4 \| good	0.208 \| good	2.666 \| good	0.167 \| good
2025-09-04T03:00:00.000Z	56 \| moderate	12.363 \| fine	56.698 \| fine	25.278 \| good	0.216 \| good	3.682 \| good	0.176 \| good
2025-09-04T04:00:00.000Z	54 \| moderate	11.013 \| good	48.867 \| good	24.74 \| good	0.223 \| good	3.906 \| good	0.177 \| good
2025-09-04T05:00:00.000Z	54 \| moderate	10.542 \| good	46.901 \| good	24.978 \| good	0.23 \| good	4.129 \| good	0.178 \| good
2025-09-04T06:00:00.000Z	54 \| moderate	11.179 \| good	49.883 \| good	23.955 \| good	0.237 \| good	4.352 \| good	0.178 \| good
2025-09-04T07:00:00.000Z	52 \| moderate	10.236 \| good	44.979 \| good	23.746 \| good	0.23 \| good	4.488 \| good	0.179 \| good
2025-09-04T08:00:00.000Z	52 \| moderate	10.382 \| good	45.919 \| good	23.597 \| good	0.223 \| good	4.623 \| good	0.18 \| good
2025-09-04T09:00:00.000Z	52 \| moderate	10.393 \| good	45.958 \| good	23.424 \| good	0.215 \| good	4.758 \| good	0.181 \| good
2025-09-04T10:00:00.000Z	54 \| moderate	11.352 \| good	49.98 \| good	22.528 \| good	0.21 \| good	4.617 \| good	0.178 \| good
2025-09-04T11:00:00.000Z	54 \| moderate	11.267 \| good	49.934 \| good	20.262 \| good	0.204 \| good	4.476 \| good	0.176 \| good
2025-09-04T12:00:00.000Z	56 \| moderate	12.311 \| fine	54.996 \| good	22.255 \| good	0.198 \| good	4.335 \| good	0.173 \| good
2025-09-04T13:00:00.000Z	58 \| moderate	13.431 \| fine	60.881 \| fine	19.216 \| good	0.187 \| good	4.167 \| good	0.174 \| good
2025-09-04T14:00:00.000Z	62 \| moderate	15.064 \| fine	66.953 \| fine	17.409 \| good	0.177 \| good	3.998 \| good	0.174 \| good
2025-09-04T15:00:00.000Z	67 \| moderate	17.587 \| fine	78.856 \| fine	27.028 \| good	0.166 \| good	3.83 \| good	0.175 \| good
2025-09-04T16:00:00.000Z	66 \| moderate	17.093 \| fine	75.099 \| fine	35.195 \| good	0.206 \| good	2.878 \| good	0.168 \| good
2025-09-04T17:00:00.000Z	64 \| moderate	16.436 \| fine	73.043 \| fine	41.696 \| good	0.245 \| good	1.926 \| good	0.161 \| good
2025-09-04T18:00:00.000Z	64 \| moderate	15.56 \| fine	69.118 \| fine	44.581 \| good	0.285 \| good	0.975 \| good	0.154 \| good
2025-09-04T19:00:00.000Z	64 \| moderate	16.295 \| fine	72.98 \| fine	49.239 \| good	0.267 \| good	0.824 \| good	0.15 \| good
2025-09-04T20:00:00.000Z	66 \| moderate	17.048 \| fine	75.103 \| fine	50.343 \| good	0.249 \| good	0.674 \| good	0.147 \| good
2025-09-04T21:00:00.000Z	66 \| moderate	17.2 \| fine	76.959 \| fine	56.603 \| fine	0.231 \| good	0.523 \| good	0.143 \| good
2025-09-04T22:00:00.000Z	67 \| moderate	17.267 \| fine	76.886 \| fine	60.13 \| fine	0.211 \| good	0.496 \| good	0.138 \| good
2025-09-04T23:00:00.000Z	66 \| moderate	17.099 \| fine	76.846 \| fine	58.071 \| fine	0.191 \| good	0.469 \| good	0.134 \| good
2025-09-05T00:00:00.000Z	87 \| moderate	8.215 \| good	8.937 \| good	66.065 \| fine	0.172 \| good	0.442 \| good	0.129 \| good
2025-09-05T01:00:00.000Z	69 \| moderate	18.76 \| fine	82.815 \| fine	45.386 \| good	0.175 \| good	1.409 \| good	0.138 \| good
2025-09-05T02:00:00.000Z	69 \| moderate	19.001 \| fine	84.744 \| fine	35.673 \| good	0.178 \| good	2.377 \| good	0.146 \| good
2025-09-05T03:00:00.000Z	67 \| moderate	18.007 \| fine	78.911 \| fine	30.185 \| good	0.181 \| good	3.345 \| good	0.154 \| good
2025-09-05T04:00:00.000Z	66 \| moderate	17.257 \| fine	76.861 \| fine	27.434 \| good	0.194 \| good	3.814 \| good	0.158 \| good

Live air quality index in Walla Walla, Washington today

Major air pollutants in Walla Walla, Washington

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Walla Walla, Washington air quality map: Stay updated on AQI near you

Air quality in nearby cities

Pendleton, Oregon

Pasco, Washington

Kennewick, Washington

Richland, Washington

Hermiston, Oregon

West Richland, Washington

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What is the ozone (O3) level in Walla Walla, Washington at the moment?

What is the nitrogen dioxide (NO2) level in Walla Walla, Washington at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Walla Walla, Washington at the moment?

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What is the sulfur dioxide (SO₂) level in Walla Walla, Washington at the moment?

What is the ozone (O₃) level in Walla Walla, Washington at the moment?

What is the nitrogen dioxide (NO₂) level in Walla Walla, Washington at the moment?