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 2.252 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 51.096 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 6.702 ppb.

Live air quality index in Walla Walla, Washington today

Q: What is the PM2.5 level in Walla Walla, Washington at the moment?

PM2.5 levels in Walla Walla, Washington are currently 22.048 μg/m3.

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

The PM10 concentration in Walla Walla, Washington is 97.113 μg/m3 at the moment.

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)

22.05 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

97.11 μg/m³

155

255

425

605+

Ozone (O₃)

51.10 ppb

201

201+

Sulfur Dioxide (SO₂)

2.25 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.70 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.35 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-07-21T23:00:00.000Z	110 \| sensitive	39.1 \| moderate	173 \| moderate	51.456 \| good	1.288 \| good	15.353 \| good	0.357 \| good
2026-07-22T00:00:00.000Z	94 \| moderate	32.4 \| fine	141 \| fine	57.017 \| fine	1.051 \| good	14.091 \| good	0.379 \| good
2026-07-22T01:00:00.000Z	90 \| moderate	29.9 \| fine	129 \| fine	55.357 \| fine	1.03 \| good	12.021 \| good	0.361 \| good
2026-07-22T02:00:00.000Z	88 \| moderate	29.3 \| fine	127 \| fine	53.059 \| good	1.03 \| good	14.7 \| good	0.341 \| good
2026-07-22T03:00:00.000Z	88 \| moderate	28.7 \| fine	125 \| fine	45.56 \| good	0.936 \| good	19.617 \| good	0.341 \| good
2026-07-22T04:00:00.000Z	88 \| moderate	28.9 \| fine	125 \| fine	47.065 \| good	1.73 \| good	21.248 \| good	0.34 \| good
2026-07-22T05:00:00.000Z	90 \| moderate	29.7 \| fine	129 \| fine	45.898 \| good	1.696 \| good	22.273 \| good	0.399 \| good
2026-07-22T06:00:00.000Z	90 \| moderate	29.7 \| fine	129 \| fine	43.177 \| good	1.016 \| good	20.743 \| good	0.299 \| good
2026-07-22T07:00:00.000Z	90 \| moderate	29.5 \| fine	129 \| fine	31.671 \| good	1.011 \| good	22.842 \| good	0.299 \| good
2026-07-22T08:00:00.000Z	90 \| moderate	30.1 \| fine	131 \| fine	37.93 \| good	0.986 \| good	25.405 \| good	0.198 \| good
2026-07-22T09:00:00.000Z	90 \| moderate	29.6 \| fine	129 \| fine	24.382 \| good	0.914 \| good	16.164 \| good	0.217 \| good
2026-07-22T10:00:00.000Z	90 \| moderate	30.3 \| fine	131 \| fine	31.316 \| good	0.933 \| good	9.927 \| good	0.179 \| good
2026-07-22T11:00:00.000Z	94 \| moderate	31.5 \| fine	137 \| fine	38.239 \| good	0.936 \| good	9.719 \| good	0.278 \| good
2026-07-22T12:00:00.000Z	102 \| sensitive	35.8 \| moderate	157 \| moderate	22.958 \| good	0.976 \| good	9.183 \| good	0.22 \| good
2026-07-22T13:00:00.000Z	110 \| sensitive	38.9 \| moderate	171 \| moderate	20.481 \| good	0.958 \| good	13.156 \| good	0.22 \| good
2026-07-22T14:00:00.000Z	134 \| sensitive	48.6 \| moderate	219 \| moderate	21.542 \| good	0.983 \| good	27.263 \| good	0.3 \| good
2026-07-22T15:00:00.000Z	147 \| sensitive	54 \| moderate	247 \| moderate	18.642 \| good	0.832 \| good	24.585 \| good	0.339 \| good
2026-07-22T16:00:00.000Z	153 \| unhealthy	58.8 \| poor	259 \| poor	25.903 \| good	2.069 \| good	26.658 \| good	0.319 \| good
2026-07-22T17:00:00.000Z	154 \| unhealthy	59.7 \| poor	259 \| poor	24.676 \| good	2.051 \| good	8.497 \| good	0.338 \| good
2026-07-22T18:00:00.000Z	151 \| unhealthy	55.7 \| poor	255 \| poor	32.803 \| good	2.222 \| good	7.173 \| good	0.335 \| good
2026-07-22T19:00:00.000Z	142 \| sensitive	51.6 \| moderate	235 \| moderate	38.461 \| good	2.429 \| good	10.622 \| good	0.316 \| good
2026-07-22T20:00:00.000Z	127 \| sensitive	45.9 \| moderate	207 \| moderate	39.33 \| good	5.048 \| good	15.175 \| good	0.296 \| good
2026-07-22T21:00:00.000Z	124 \| sensitive	44.7 \| moderate	201 \| moderate	50.246 \| good	2.903 \| good	15.999 \| good	0.295 \| good
2026-07-22T22:00:00.000Z	125 \| sensitive	45.2 \| moderate	203 \| moderate	61.327 \| fine	2.059 \| good	12.94 \| good	0.318 \| good
2026-07-22T23:00:00.000Z	117 \| sensitive	41.7 \| moderate	185 \| moderate	56.072 \| fine	3.316 \| good	12.636 \| good	0.281 \| good
2026-07-23T00:00:00.000Z	115 \| sensitive	40.6 \| moderate	181 \| moderate	50.194 \| good	1.631 \| good	10.196 \| good	0.281 \| good
2026-07-23T01:00:00.000Z	116 \| sensitive	41.4 \| moderate	185 \| moderate	55.597 \| fine	2.051 \| good	8.425 \| good	0.302 \| good
2026-07-23T02:00:00.000Z	116 \| sensitive	41.4 \| moderate	185 \| moderate	50.959 \| good	1.759 \| good	15.504 \| good	0.282 \| good
2026-07-23T03:00:00.000Z	90 \| moderate	30.3 \| fine	131.257 \| fine	34.659 \| good	1.083 \| good	6.658 \| good	0.546 \| good
2026-07-23T04:00:00.000Z	118 \| sensitive	42.4 \| moderate	189 \| moderate	45.985 \| good	1.29 \| good	16.193 \| good	0.221 \| good
2026-07-23T05:00:00.000Z	117 \| sensitive	42.1 \| moderate	187 \| moderate	41.27 \| good	1.089 \| good	13.062 \| good	0.242 \| good
2026-07-23T06:00:00.000Z	118 \| sensitive	42.4 \| moderate	189 \| moderate	24.973 \| good	1.034 \| good	10.468 \| good	0.179 \| good
2026-07-23T07:00:00.000Z	118 \| sensitive	42.3 \| moderate	189 \| moderate	27.125 \| good	1.036 \| good	9.254 \| good	0.179 \| good
2026-07-23T08:00:00.000Z	122 \| sensitive	43.7 \| moderate	195 \| moderate	35.512 \| good	1.504 \| good	10.34 \| good	0.159 \| good
2026-07-23T09:00:00.000Z	129 \| sensitive	46.9 \| moderate	211 \| moderate	33.871 \| good	1.76 \| good	10.659 \| good	0.138 \| good
2026-07-23T10:00:00.000Z	130 \| sensitive	47.4 \| moderate	213 \| moderate	38.223 \| good	1.749 \| good	8.863 \| good	0.138 \| good
2026-07-23T11:00:00.000Z	132 \| sensitive	47.8 \| moderate	215 \| moderate	38.228 \| good	1.975 \| good	3.114 \| good	0.138 \| good
2026-07-23T12:00:00.000Z	134 \| sensitive	48.6 \| moderate	219 \| moderate	32.327 \| good	2.5 \| good	4.009 \| good	0.138 \| good
2026-07-23T13:00:00.000Z	140 \| sensitive	51.3 \| moderate	233 \| moderate	25.569 \| good	2.506 \| good	9.418 \| good	0.138 \| good
2026-07-23T14:00:00.000Z	124 \| sensitive	44.8 \| moderate	201 \| moderate	29.43 \| good	1.654 \| good	12.612 \| good	0.218 \| good
2026-07-23T15:00:00.000Z	107 \| sensitive	38.1 \| moderate	167 \| moderate	29.171 \| good	1.493 \| good	11.537 \| good	0.178 \| good
2026-07-23T16:00:00.000Z	99 \| moderate	34.9 \| fine	151 \| fine	30.05 \| good	2.001 \| good	8.145 \| good	0.178 \| good
2026-07-23T17:00:00.000Z	84 \| moderate	26.7 \| fine	117 \| fine	32.937 \| good	3.125 \| good	7.518 \| good	0.329 \| good
2026-07-23T18:00:00.000Z	77 \| moderate	22.8 \| fine	101 \| fine	38.262 \| good	3.611 \| good	7.66 \| good	0.329 \| good
2026-07-23T19:00:00.000Z	75 \| moderate	22.4 \| fine	99 \| fine	39.346 \| good	3.172 \| good	6.932 \| good	0.31 \| good
2026-07-23T20:00:00.000Z	77 \| moderate	23.2 \| fine	101 \| fine	43.88 \| good	2.934 \| good	4.941 \| good	0.33 \| good
2026-07-23T21:00:00.000Z	75 \| moderate	22 \| fine	97 \| fine	51.099 \| good	2.252 \| good	6.699 \| good	0.349 \| good
2026-07-23T22:00:00.000Z	75 \| moderate	22.048 \| fine	97.113 \| fine	51.096 \| good	2.252 \| good	6.702 \| good	0.349 \| good
2026-07-23T23:00:00.000Z	77 \| moderate	14.049 \| fine	63.081 \| fine	63.445 \| fine	0.438 \| good	1.267 \| good	0.253 \| good
2026-07-24T00:00:00.000Z	87 \| moderate	18.887 \| fine	83.072 \| fine	65.704 \| fine	0.411 \| good	1.179 \| good	0.247 \| good
2026-07-24T01:00:00.000Z	84 \| moderate	18.672 \| fine	82.941 \| fine	64.787 \| fine	0.404 \| good	1.208 \| good	0.247 \| good
2026-07-24T02:00:00.000Z	58 \| moderate	12.945 \| fine	59.038 \| fine	49.422 \| good	0.376 \| good	1.274 \| good	0.241 \| good
2026-07-24T03:00:00.000Z	49 \| good	8.972 \| good	39.266 \| good	32.795 \| good	0.332 \| good	1.467 \| good	0.226 \| good
2026-07-24T04:00:00.000Z	25 \| good	1.128 \| good	4.395 \| good	26.685 \| good	0.385 \| good	2.465 \| good	0.232 \| good
2026-07-24T05:00:00.000Z	44 \| good	8.363 \| good	37.183 \| good	27.303 \| good	0.446 \| good	3.303 \| good	0.237 \| good
2026-07-24T06:00:00.000Z	75 \| moderate	21.522 \| fine	94.649 \| fine	26.627 \| good	0.509 \| good	4.071 \| good	0.245 \| good
2026-07-24T07:00:00.000Z	105 \| sensitive	37.238 \| moderate	163.941 \| moderate	23.61 \| good	0.568 \| good	5.073 \| good	0.259 \| good
2026-07-24T08:00:00.000Z	166 \| unhealthy	76.634 \| poor	276.528 \| poor	23.778 \| good	0.619 \| good	6 \| good	0.276 \| good
2026-07-24T09:00:00.000Z	159 \| unhealthy	67.121 \| poor	266.596 \| poor	23.658 \| good	0.649 \| good	6.901 \| good	0.296 \| good
2026-07-24T10:00:00.000Z	129 \| sensitive	47.102 \| moderate	211.74 \| moderate	23.009 \| good	0.681 \| good	7.873 \| good	0.324 \| good
2026-07-24T11:00:00.000Z	92 \| moderate	30.871 \| fine	134.237 \| fine	23.903 \| good	0.694 \| good	8.938 \| good	0.357 \| good
2026-07-24T12:00:00.000Z	75 \| moderate	22.288 \| fine	98.475 \| fine	25.961 \| good	0.697 \| good	10.002 \| good	0.393 \| good
2026-07-24T13:00:00.000Z	66 \| moderate	16.885 \| fine	74.672 \| fine	22.361 \| good	0.689 \| good	10.134 \| good	0.432 \| good
2026-07-24T14:00:00.000Z	67 \| moderate	17.768 \| fine	78.739 \| fine	23.058 \| good	0.633 \| good	8.441 \| good	0.466 \| good
2026-07-24T15:00:00.000Z	69 \| moderate	18.968 \| fine	84.607 \| fine	26.512 \| good	0.727 \| good	5.914 \| good	0.403 \| good
2026-07-24T16:00:00.000Z	71 \| moderate	19.695 \| fine	86.709 \| fine	31.078 \| good	0.358 \| good	2.092 \| good	0.195 \| good
2026-07-24T17:00:00.000Z	62 \| moderate	15.054 \| fine	66.932 \| fine	39.173 \| good	0.249 \| good	1.195 \| good	0.15 \| good
2026-07-24T18:00:00.000Z	49 \| good	8.612 \| good	38.019 \| good	45.088 \| good	0.227 \| good	0.892 \| good	0.138 \| good
2026-07-24T19:00:00.000Z	49 \| good	9.461 \| good	41.992 \| good	48.331 \| good	0.242 \| good	0.834 \| good	0.14 \| good
2026-07-24T20:00:00.000Z	54 \| moderate	11.085 \| good	48.932 \| good	52.171 \| good	0.283 \| good	0.918 \| good	0.15 \| good
2026-07-24T21:00:00.000Z	51 \| moderate	7.613 \| good	34.008 \| good	54.928 \| good	0.343 \| good	1.091 \| good	0.167 \| good
2026-07-24T22:00:00.000Z	61 \| moderate	10.665 \| good	47.021 \| good	58.083 \| fine	0.398 \| good	1.232 \| good	0.184 \| good
2026-07-24T23:00:00.000Z	67 \| moderate	15.686 \| fine	70.864 \| fine	59.811 \| fine	0.396 \| good	1.247 \| good	0.185 \| good
2026-07-25T00:00:00.000Z	64 \| moderate	13.858 \| fine	63.101 \| fine	58.779 \| fine	0.347 \| good	1.15 \| good	0.175 \| good
2026-07-25T01:00:00.000Z	73 \| moderate	20.508 \| fine	89.343 \| fine	56.466 \| fine	0.285 \| good	1.026 \| good	0.161 \| good
2026-07-25T02:00:00.000Z	84 \| moderate	27.302 \| fine	119.073 \| fine	44.568 \| good	0.238 \| good	1.099 \| good	0.154 \| good
2026-07-25T03:00:00.000Z	88 \| moderate	29.444 \| fine	127.054 \| fine	35.379 \| good	0.362 \| good	3.069 \| good	0.195 \| good
2026-07-25T04:00:00.000Z	82 \| moderate	25.528 \| fine	111.016 \| fine	31.276 \| good	0.454 \| good	5.435 \| good	0.227 \| good
2026-07-25T05:00:00.000Z	84 \| moderate	27.331 \| fine	118.833 \| fine	28.804 \| good	0.558 \| good	7.045 \| good	0.255 \| good
2026-07-25T06:00:00.000Z	90 \| moderate	29.701 \| fine	128.728 \| fine	26.695 \| good	0.657 \| good	7.775 \| good	0.277 \| good
2026-07-25T07:00:00.000Z	73 \| moderate	21.09 \| fine	92.793 \| fine	27.329 \| good	0.724 \| good	7.628 \| good	0.285 \| good
2026-07-25T08:00:00.000Z	64 \| moderate	15.996 \| fine	70.956 \| fine	31.224 \| good	0.741 \| good	6.847 \| good	0.28 \| good
2026-07-25T09:00:00.000Z	64 \| moderate	16.267 \| fine	72.683 \| fine	31.222 \| good	0.709 \| good	5.967 \| good	0.265 \| good
2026-07-25T10:00:00.000Z	73 \| moderate	20.725 \| fine	90.713 \| fine	32.259 \| good	0.682 \| good	5.817 \| good	0.256 \| good
2026-07-25T11:00:00.000Z	84 \| moderate	26.767 \| fine	116.464 \| fine	33.496 \| good	0.661 \| good	5.613 \| good	0.248 \| good
2026-07-25T12:00:00.000Z	79 \| moderate	24.226 \| fine	106.52 \| fine	29.325 \| good	0.647 \| good	5.657 \| good	0.243 \| good
2026-07-25T13:00:00.000Z	73 \| moderate	21.364 \| fine	94.584 \| fine	24.023 \| good	0.634 \| good	5.616 \| good	0.241 \| good
2026-07-25T14:00:00.000Z	73 \| moderate	20.726 \| fine	90.717 \| fine	21.505 \| good	0.606 \| good	4.602 \| good	0.235 \| good
2026-07-25T15:00:00.000Z	79 \| moderate	23.709 \| fine	104.565 \| fine	24.993 \| good	0.342 \| good	1.738 \| good	0.145 \| good
2026-07-25T16:00:00.000Z	84 \| moderate	27.096 \| fine	118.471 \| fine	32.605 \| good	0.222 \| good	0.781 \| good	0.105 \| good
2026-07-25T17:00:00.000Z	79 \| moderate	23.554 \| fine	102.695 \| fine	38.528 \| good	0.196 \| good	0.547 \| good	0.098 \| good
2026-07-25T18:00:00.000Z	64 \| moderate	16.121 \| fine	71.005 \| fine	41.927 \| good	0.19 \| good	0.453 \| good	0.097 \| good
2026-07-25T19:00:00.000Z	67 \| moderate	17.637 \| fine	78.776 \| fine	44.288 \| good	0.208 \| good	0.482 \| good	0.104 \| good
2026-07-25T20:00:00.000Z	67 \| moderate	17.79 \| fine	78.827 \| fine	47.338 \| good	0.25 \| good	0.591 \| good	0.118 \| good
2026-07-25T21:00:00.000Z	62 \| moderate	14.58 \| fine	64.991 \| fine	51.118 \| good	0.292 \| good	0.72 \| good	0.132 \| good
2026-07-25T22:00:00.000Z	64 \| moderate	15.771 \| fine	70.882 \| fine	53.384 \| good	0.306 \| good	0.81 \| good	0.141 \| good

Walla Walla

Get reliable air quality data to drive your business

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

0.33ppm

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 01:00:00 on 2026-07-23.

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 09:00:00 on 2026-07-23.

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

As of now, the AQI in Walla Walla, Washington is 75, 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 22.048 μg/m³.

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

The PM₁₀ concentration in Walla Walla, Washington is 97.113 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 0.349 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 2.252 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 51.096 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 6.702 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T23:00:00.000Z	110 \| sensitive	39.1 \| moderate	173 \| moderate	51.456 \| good	1.288 \| good	15.353 \| good	0.357 \| good
2026-07-22T00:00:00.000Z	94 \| moderate	32.4 \| fine	141 \| fine	57.017 \| fine	1.051 \| good	14.091 \| good	0.379 \| good
2026-07-22T01:00:00.000Z	90 \| moderate	29.9 \| fine	129 \| fine	55.357 \| fine	1.03 \| good	12.021 \| good	0.361 \| good
2026-07-22T02:00:00.000Z	88 \| moderate	29.3 \| fine	127 \| fine	53.059 \| good	1.03 \| good	14.7 \| good	0.341 \| good
2026-07-22T03:00:00.000Z	88 \| moderate	28.7 \| fine	125 \| fine	45.56 \| good	0.936 \| good	19.617 \| good	0.341 \| good
2026-07-22T04:00:00.000Z	88 \| moderate	28.9 \| fine	125 \| fine	47.065 \| good	1.73 \| good	21.248 \| good	0.34 \| good
2026-07-22T05:00:00.000Z	90 \| moderate	29.7 \| fine	129 \| fine	45.898 \| good	1.696 \| good	22.273 \| good	0.399 \| good
2026-07-22T06:00:00.000Z	90 \| moderate	29.7 \| fine	129 \| fine	43.177 \| good	1.016 \| good	20.743 \| good	0.299 \| good
2026-07-22T07:00:00.000Z	90 \| moderate	29.5 \| fine	129 \| fine	31.671 \| good	1.011 \| good	22.842 \| good	0.299 \| good
2026-07-22T08:00:00.000Z	90 \| moderate	30.1 \| fine	131 \| fine	37.93 \| good	0.986 \| good	25.405 \| good	0.198 \| good
2026-07-22T09:00:00.000Z	90 \| moderate	29.6 \| fine	129 \| fine	24.382 \| good	0.914 \| good	16.164 \| good	0.217 \| good
2026-07-22T10:00:00.000Z	90 \| moderate	30.3 \| fine	131 \| fine	31.316 \| good	0.933 \| good	9.927 \| good	0.179 \| good
2026-07-22T11:00:00.000Z	94 \| moderate	31.5 \| fine	137 \| fine	38.239 \| good	0.936 \| good	9.719 \| good	0.278 \| good
2026-07-22T12:00:00.000Z	102 \| sensitive	35.8 \| moderate	157 \| moderate	22.958 \| good	0.976 \| good	9.183 \| good	0.22 \| good
2026-07-22T13:00:00.000Z	110 \| sensitive	38.9 \| moderate	171 \| moderate	20.481 \| good	0.958 \| good	13.156 \| good	0.22 \| good
2026-07-22T14:00:00.000Z	134 \| sensitive	48.6 \| moderate	219 \| moderate	21.542 \| good	0.983 \| good	27.263 \| good	0.3 \| good
2026-07-22T15:00:00.000Z	147 \| sensitive	54 \| moderate	247 \| moderate	18.642 \| good	0.832 \| good	24.585 \| good	0.339 \| good
2026-07-22T16:00:00.000Z	153 \| unhealthy	58.8 \| poor	259 \| poor	25.903 \| good	2.069 \| good	26.658 \| good	0.319 \| good
2026-07-22T17:00:00.000Z	154 \| unhealthy	59.7 \| poor	259 \| poor	24.676 \| good	2.051 \| good	8.497 \| good	0.338 \| good
2026-07-22T18:00:00.000Z	151 \| unhealthy	55.7 \| poor	255 \| poor	32.803 \| good	2.222 \| good	7.173 \| good	0.335 \| good
2026-07-22T19:00:00.000Z	142 \| sensitive	51.6 \| moderate	235 \| moderate	38.461 \| good	2.429 \| good	10.622 \| good	0.316 \| good
2026-07-22T20:00:00.000Z	127 \| sensitive	45.9 \| moderate	207 \| moderate	39.33 \| good	5.048 \| good	15.175 \| good	0.296 \| good
2026-07-22T21:00:00.000Z	124 \| sensitive	44.7 \| moderate	201 \| moderate	50.246 \| good	2.903 \| good	15.999 \| good	0.295 \| good
2026-07-22T22:00:00.000Z	125 \| sensitive	45.2 \| moderate	203 \| moderate	61.327 \| fine	2.059 \| good	12.94 \| good	0.318 \| good
2026-07-22T23:00:00.000Z	117 \| sensitive	41.7 \| moderate	185 \| moderate	56.072 \| fine	3.316 \| good	12.636 \| good	0.281 \| good
2026-07-23T00:00:00.000Z	115 \| sensitive	40.6 \| moderate	181 \| moderate	50.194 \| good	1.631 \| good	10.196 \| good	0.281 \| good
2026-07-23T01:00:00.000Z	116 \| sensitive	41.4 \| moderate	185 \| moderate	55.597 \| fine	2.051 \| good	8.425 \| good	0.302 \| good
2026-07-23T02:00:00.000Z	116 \| sensitive	41.4 \| moderate	185 \| moderate	50.959 \| good	1.759 \| good	15.504 \| good	0.282 \| good
2026-07-23T03:00:00.000Z	90 \| moderate	30.3 \| fine	131.257 \| fine	34.659 \| good	1.083 \| good	6.658 \| good	0.546 \| good
2026-07-23T04:00:00.000Z	118 \| sensitive	42.4 \| moderate	189 \| moderate	45.985 \| good	1.29 \| good	16.193 \| good	0.221 \| good
2026-07-23T05:00:00.000Z	117 \| sensitive	42.1 \| moderate	187 \| moderate	41.27 \| good	1.089 \| good	13.062 \| good	0.242 \| good
2026-07-23T06:00:00.000Z	118 \| sensitive	42.4 \| moderate	189 \| moderate	24.973 \| good	1.034 \| good	10.468 \| good	0.179 \| good
2026-07-23T07:00:00.000Z	118 \| sensitive	42.3 \| moderate	189 \| moderate	27.125 \| good	1.036 \| good	9.254 \| good	0.179 \| good
2026-07-23T08:00:00.000Z	122 \| sensitive	43.7 \| moderate	195 \| moderate	35.512 \| good	1.504 \| good	10.34 \| good	0.159 \| good
2026-07-23T09:00:00.000Z	129 \| sensitive	46.9 \| moderate	211 \| moderate	33.871 \| good	1.76 \| good	10.659 \| good	0.138 \| good
2026-07-23T10:00:00.000Z	130 \| sensitive	47.4 \| moderate	213 \| moderate	38.223 \| good	1.749 \| good	8.863 \| good	0.138 \| good
2026-07-23T11:00:00.000Z	132 \| sensitive	47.8 \| moderate	215 \| moderate	38.228 \| good	1.975 \| good	3.114 \| good	0.138 \| good
2026-07-23T12:00:00.000Z	134 \| sensitive	48.6 \| moderate	219 \| moderate	32.327 \| good	2.5 \| good	4.009 \| good	0.138 \| good
2026-07-23T13:00:00.000Z	140 \| sensitive	51.3 \| moderate	233 \| moderate	25.569 \| good	2.506 \| good	9.418 \| good	0.138 \| good
2026-07-23T14:00:00.000Z	124 \| sensitive	44.8 \| moderate	201 \| moderate	29.43 \| good	1.654 \| good	12.612 \| good	0.218 \| good
2026-07-23T15:00:00.000Z	107 \| sensitive	38.1 \| moderate	167 \| moderate	29.171 \| good	1.493 \| good	11.537 \| good	0.178 \| good
2026-07-23T16:00:00.000Z	99 \| moderate	34.9 \| fine	151 \| fine	30.05 \| good	2.001 \| good	8.145 \| good	0.178 \| good
2026-07-23T17:00:00.000Z	84 \| moderate	26.7 \| fine	117 \| fine	32.937 \| good	3.125 \| good	7.518 \| good	0.329 \| good
2026-07-23T18:00:00.000Z	77 \| moderate	22.8 \| fine	101 \| fine	38.262 \| good	3.611 \| good	7.66 \| good	0.329 \| good
2026-07-23T19:00:00.000Z	75 \| moderate	22.4 \| fine	99 \| fine	39.346 \| good	3.172 \| good	6.932 \| good	0.31 \| good
2026-07-23T20:00:00.000Z	77 \| moderate	23.2 \| fine	101 \| fine	43.88 \| good	2.934 \| good	4.941 \| good	0.33 \| good
2026-07-23T21:00:00.000Z	75 \| moderate	22 \| fine	97 \| fine	51.099 \| good	2.252 \| good	6.699 \| good	0.349 \| good
2026-07-23T22:00:00.000Z	75 \| moderate	22.048 \| fine	97.113 \| fine	51.096 \| good	2.252 \| good	6.702 \| good	0.349 \| good
2026-07-23T23:00:00.000Z	77 \| moderate	14.049 \| fine	63.081 \| fine	63.445 \| fine	0.438 \| good	1.267 \| good	0.253 \| good
2026-07-24T00:00:00.000Z	87 \| moderate	18.887 \| fine	83.072 \| fine	65.704 \| fine	0.411 \| good	1.179 \| good	0.247 \| good
2026-07-24T01:00:00.000Z	84 \| moderate	18.672 \| fine	82.941 \| fine	64.787 \| fine	0.404 \| good	1.208 \| good	0.247 \| good
2026-07-24T02:00:00.000Z	58 \| moderate	12.945 \| fine	59.038 \| fine	49.422 \| good	0.376 \| good	1.274 \| good	0.241 \| good
2026-07-24T03:00:00.000Z	49 \| good	8.972 \| good	39.266 \| good	32.795 \| good	0.332 \| good	1.467 \| good	0.226 \| good
2026-07-24T04:00:00.000Z	25 \| good	1.128 \| good	4.395 \| good	26.685 \| good	0.385 \| good	2.465 \| good	0.232 \| good
2026-07-24T05:00:00.000Z	44 \| good	8.363 \| good	37.183 \| good	27.303 \| good	0.446 \| good	3.303 \| good	0.237 \| good
2026-07-24T06:00:00.000Z	75 \| moderate	21.522 \| fine	94.649 \| fine	26.627 \| good	0.509 \| good	4.071 \| good	0.245 \| good
2026-07-24T07:00:00.000Z	105 \| sensitive	37.238 \| moderate	163.941 \| moderate	23.61 \| good	0.568 \| good	5.073 \| good	0.259 \| good
2026-07-24T08:00:00.000Z	166 \| unhealthy	76.634 \| poor	276.528 \| poor	23.778 \| good	0.619 \| good	6 \| good	0.276 \| good
2026-07-24T09:00:00.000Z	159 \| unhealthy	67.121 \| poor	266.596 \| poor	23.658 \| good	0.649 \| good	6.901 \| good	0.296 \| good
2026-07-24T10:00:00.000Z	129 \| sensitive	47.102 \| moderate	211.74 \| moderate	23.009 \| good	0.681 \| good	7.873 \| good	0.324 \| good
2026-07-24T11:00:00.000Z	92 \| moderate	30.871 \| fine	134.237 \| fine	23.903 \| good	0.694 \| good	8.938 \| good	0.357 \| good
2026-07-24T12:00:00.000Z	75 \| moderate	22.288 \| fine	98.475 \| fine	25.961 \| good	0.697 \| good	10.002 \| good	0.393 \| good
2026-07-24T13:00:00.000Z	66 \| moderate	16.885 \| fine	74.672 \| fine	22.361 \| good	0.689 \| good	10.134 \| good	0.432 \| good
2026-07-24T14:00:00.000Z	67 \| moderate	17.768 \| fine	78.739 \| fine	23.058 \| good	0.633 \| good	8.441 \| good	0.466 \| good
2026-07-24T15:00:00.000Z	69 \| moderate	18.968 \| fine	84.607 \| fine	26.512 \| good	0.727 \| good	5.914 \| good	0.403 \| good
2026-07-24T16:00:00.000Z	71 \| moderate	19.695 \| fine	86.709 \| fine	31.078 \| good	0.358 \| good	2.092 \| good	0.195 \| good
2026-07-24T17:00:00.000Z	62 \| moderate	15.054 \| fine	66.932 \| fine	39.173 \| good	0.249 \| good	1.195 \| good	0.15 \| good
2026-07-24T18:00:00.000Z	49 \| good	8.612 \| good	38.019 \| good	45.088 \| good	0.227 \| good	0.892 \| good	0.138 \| good
2026-07-24T19:00:00.000Z	49 \| good	9.461 \| good	41.992 \| good	48.331 \| good	0.242 \| good	0.834 \| good	0.14 \| good
2026-07-24T20:00:00.000Z	54 \| moderate	11.085 \| good	48.932 \| good	52.171 \| good	0.283 \| good	0.918 \| good	0.15 \| good
2026-07-24T21:00:00.000Z	51 \| moderate	7.613 \| good	34.008 \| good	54.928 \| good	0.343 \| good	1.091 \| good	0.167 \| good
2026-07-24T22:00:00.000Z	61 \| moderate	10.665 \| good	47.021 \| good	58.083 \| fine	0.398 \| good	1.232 \| good	0.184 \| good
2026-07-24T23:00:00.000Z	67 \| moderate	15.686 \| fine	70.864 \| fine	59.811 \| fine	0.396 \| good	1.247 \| good	0.185 \| good
2026-07-25T00:00:00.000Z	64 \| moderate	13.858 \| fine	63.101 \| fine	58.779 \| fine	0.347 \| good	1.15 \| good	0.175 \| good
2026-07-25T01:00:00.000Z	73 \| moderate	20.508 \| fine	89.343 \| fine	56.466 \| fine	0.285 \| good	1.026 \| good	0.161 \| good
2026-07-25T02:00:00.000Z	84 \| moderate	27.302 \| fine	119.073 \| fine	44.568 \| good	0.238 \| good	1.099 \| good	0.154 \| good
2026-07-25T03:00:00.000Z	88 \| moderate	29.444 \| fine	127.054 \| fine	35.379 \| good	0.362 \| good	3.069 \| good	0.195 \| good
2026-07-25T04:00:00.000Z	82 \| moderate	25.528 \| fine	111.016 \| fine	31.276 \| good	0.454 \| good	5.435 \| good	0.227 \| good
2026-07-25T05:00:00.000Z	84 \| moderate	27.331 \| fine	118.833 \| fine	28.804 \| good	0.558 \| good	7.045 \| good	0.255 \| good
2026-07-25T06:00:00.000Z	90 \| moderate	29.701 \| fine	128.728 \| fine	26.695 \| good	0.657 \| good	7.775 \| good	0.277 \| good
2026-07-25T07:00:00.000Z	73 \| moderate	21.09 \| fine	92.793 \| fine	27.329 \| good	0.724 \| good	7.628 \| good	0.285 \| good
2026-07-25T08:00:00.000Z	64 \| moderate	15.996 \| fine	70.956 \| fine	31.224 \| good	0.741 \| good	6.847 \| good	0.28 \| good
2026-07-25T09:00:00.000Z	64 \| moderate	16.267 \| fine	72.683 \| fine	31.222 \| good	0.709 \| good	5.967 \| good	0.265 \| good
2026-07-25T10:00:00.000Z	73 \| moderate	20.725 \| fine	90.713 \| fine	32.259 \| good	0.682 \| good	5.817 \| good	0.256 \| good
2026-07-25T11:00:00.000Z	84 \| moderate	26.767 \| fine	116.464 \| fine	33.496 \| good	0.661 \| good	5.613 \| good	0.248 \| good
2026-07-25T12:00:00.000Z	79 \| moderate	24.226 \| fine	106.52 \| fine	29.325 \| good	0.647 \| good	5.657 \| good	0.243 \| good
2026-07-25T13:00:00.000Z	73 \| moderate	21.364 \| fine	94.584 \| fine	24.023 \| good	0.634 \| good	5.616 \| good	0.241 \| good
2026-07-25T14:00:00.000Z	73 \| moderate	20.726 \| fine	90.717 \| fine	21.505 \| good	0.606 \| good	4.602 \| good	0.235 \| good
2026-07-25T15:00:00.000Z	79 \| moderate	23.709 \| fine	104.565 \| fine	24.993 \| good	0.342 \| good	1.738 \| good	0.145 \| good
2026-07-25T16:00:00.000Z	84 \| moderate	27.096 \| fine	118.471 \| fine	32.605 \| good	0.222 \| good	0.781 \| good	0.105 \| good
2026-07-25T17:00:00.000Z	79 \| moderate	23.554 \| fine	102.695 \| fine	38.528 \| good	0.196 \| good	0.547 \| good	0.098 \| good
2026-07-25T18:00:00.000Z	64 \| moderate	16.121 \| fine	71.005 \| fine	41.927 \| good	0.19 \| good	0.453 \| good	0.097 \| good
2026-07-25T19:00:00.000Z	67 \| moderate	17.637 \| fine	78.776 \| fine	44.288 \| good	0.208 \| good	0.482 \| good	0.104 \| good
2026-07-25T20:00:00.000Z	67 \| moderate	17.79 \| fine	78.827 \| fine	47.338 \| good	0.25 \| good	0.591 \| good	0.118 \| good
2026-07-25T21:00:00.000Z	62 \| moderate	14.58 \| fine	64.991 \| fine	51.118 \| good	0.292 \| good	0.72 \| good	0.132 \| good
2026-07-25T22:00:00.000Z	64 \| moderate	15.771 \| fine	70.882 \| fine	53.384 \| good	0.306 \| good	0.81 \| good	0.141 \| 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 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?