What is the current concentration of PM10 in Hermiston, Oregon?

The current PM10 concentration at Hermiston, Oregon is 55.102 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Hermiston, Oregon?

The current sulfur dioxide (SO2) concentration at Hermiston, Oregon is 2.771 ppb.

What is the current concentration of ozone (O3) in Hermiston, Oregon?

The current ozone (O3) concentration at Hermiston, Oregon is 37.032 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Hermiston, Oregon?

The current nitrogen dioxide (NO2) concentration at Hermiston, Oregon is 4.162 ppb.

Hermiston, Oregon live air quality index now

Q: What is the current concentration of PM2.5 in Hermiston, Oregon?

The current PM2.5 concentration at Hermiston, Oregon is 12.285 μg/m3.

Stay updated with real-time air quality in Hermiston, Oregon 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

Hermiston, Oregon

Last updated: ... (Local time)

Major air pollutants in Hermiston, Oregon

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

12.29 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

55.10 μg/m³

155

255

425

605+

Ozone (O₃)

37.03 ppb

201

201+

Sulfur Dioxide (SO₂)

2.77 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.16 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Hermiston, Oregon

Get Live Pollen Counts

Hermiston, Oregon

Scroll To Air Quality Map

Track live Hermiston, Oregon air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T22:00:00.000Z	75 \| moderate	21.905 \| fine	95.124 \| fine	49.072 \| good	2.64 \| good	8.245 \| good	0.278 \| good
2026-07-21T23:00:00.000Z	75 \| moderate	21.759 \| fine	94.695 \| fine	57.025 \| fine	1.195 \| good	7.62 \| good	0.357 \| good
2026-07-22T00:00:00.000Z	77 \| moderate	23.043 \| fine	100.742 \| fine	61.974 \| fine	0.989 \| good	9.283 \| good	0.382 \| good
2026-07-22T01:00:00.000Z	84 \| moderate	23.702 \| fine	102.64 \| fine	64.942 \| fine	0.966 \| good	8.565 \| good	0.365 \| good
2026-07-22T02:00:00.000Z	90 \| moderate	24.738 \| fine	106.404 \| fine	66.901 \| fine	0.966 \| good	9.054 \| good	0.344 \| good
2026-07-22T03:00:00.000Z	93 \| moderate	26.451 \| fine	114.126 \| fine	67.83 \| fine	0.992 \| good	9.344 \| good	0.343 \| good
2026-07-22T04:00:00.000Z	82 \| moderate	25.64 \| fine	110.69 \| fine	60.844 \| fine	1.601 \| good	10.076 \| good	0.344 \| good
2026-07-22T05:00:00.000Z	82 \| moderate	26.074 \| fine	112.521 \| fine	53.954 \| good	1.58 \| good	10.099 \| good	0.401 \| good
2026-07-22T06:00:00.000Z	82 \| moderate	26.423 \| fine	114.178 \| fine	47.025 \| good	0.976 \| good	7.268 \| good	0.298 \| good
2026-07-22T07:00:00.000Z	82 \| moderate	26.383 \| fine	114.289 \| fine	35.154 \| good	0.976 \| good	7.352 \| good	0.298 \| good
2026-07-22T08:00:00.000Z	84 \| moderate	26.752 \| fine	116.603 \| fine	32.106 \| good	0.952 \| good	7.087 \| good	0.199 \| good
2026-07-22T09:00:00.000Z	84 \| moderate	26.838 \| fine	116.516 \| fine	29.091 \| good	0.911 \| good	7.717 \| good	0.216 \| good
2026-07-22T10:00:00.000Z	84 \| moderate	26.89 \| fine	116.468 \| fine	26.128 \| good	0.914 \| good	12.341 \| good	0.179 \| good
2026-07-22T11:00:00.000Z	84 \| moderate	27.205 \| fine	118.501 \| fine	24.121 \| good	0.913 \| good	19.24 \| good	0.277 \| good
2026-07-22T12:00:00.000Z	84 \| moderate	27.29 \| fine	118.234 \| fine	22.07 \| good	0.931 \| good	23.817 \| good	0.219 \| good
2026-07-22T13:00:00.000Z	84 \| moderate	27.489 \| fine	118.338 \| fine	24.066 \| good	0.926 \| good	24.006 \| good	0.219 \| good
2026-07-22T14:00:00.000Z	86 \| moderate	27.863 \| fine	120.163 \| fine	22.058 \| good	0.778 \| good	26.581 \| good	0.298 \| good
2026-07-22T15:00:00.000Z	86 \| moderate	28.057 \| fine	122.239 \| fine	24.024 \| good	0.772 \| good	24.338 \| good	0.335 \| good
2026-07-22T16:00:00.000Z	86 \| moderate	28.372 \| fine	122.356 \| fine	25.11 \| good	1.914 \| good	8.94 \| good	0.315 \| good
2026-07-22T17:00:00.000Z	88 \| moderate	28.931 \| fine	124.963 \| fine	29.033 \| good	1.926 \| good	8.075 \| good	0.335 \| good
2026-07-22T18:00:00.000Z	88 \| moderate	29.267 \| fine	126.876 \| fine	29.118 \| good	2.059 \| good	7.194 \| good	0.332 \| good
2026-07-22T19:00:00.000Z	90 \| moderate	29.511 \| fine	126.728 \| fine	36.124 \| good	2.249 \| good	10.186 \| good	0.312 \| good
2026-07-22T20:00:00.000Z	90 \| moderate	29.868 \| fine	128.621 \| fine	41.159 \| good	4.628 \| good	9.243 \| good	0.292 \| good
2026-07-22T21:00:00.000Z	102 \| sensitive	36.26 \| moderate	158.003 \| moderate	50.096 \| good	2.618 \| good	8.322 \| good	0.291 \| good
2026-07-22T22:00:00.000Z	102 \| sensitive	36.224 \| moderate	158.258 \| moderate	56.082 \| fine	1.827 \| good	8.997 \| good	0.316 \| good
2026-07-22T23:00:00.000Z	107 \| sensitive	37.677 \| moderate	165.629 \| moderate	62.965 \| fine	3.075 \| good	8.528 \| good	0.282 \| good
2026-07-23T00:00:00.000Z	107 \| sensitive	38.158 \| moderate	167.671 \| moderate	63.944 \| fine	1.474 \| good	8.977 \| good	0.282 \| good
2026-07-23T01:00:00.000Z	107 \| sensitive	37.786 \| moderate	165.885 \| moderate	64.982 \| fine	1.875 \| good	7.406 \| good	0.301 \| good
2026-07-23T02:00:00.000Z	105 \| sensitive	36.947 \| moderate	162.056 \| moderate	63.909 \| fine	1.647 \| good	7.632 \| good	0.281 \| good
2026-07-23T03:00:00.000Z	86 \| moderate	27.589 \| fine	119.373 \| fine	55.225 \| fine	0.354 \| good	3.124 \| good	0.305 \| good
2026-07-23T04:00:00.000Z	102 \| sensitive	35.51 \| moderate	153.972 \| fine	57.916 \| fine	1.203 \| good	7.816 \| good	0.22 \| good
2026-07-23T05:00:00.000Z	105 \| sensitive	36.832 \| moderate	160.41 \| moderate	49.06 \| good	1.039 \| good	6.343 \| good	0.24 \| good
2026-07-23T06:00:00.000Z	105 \| sensitive	37.28 \| moderate	162.79 \| moderate	44.982 \| good	0.963 \| good	8.141 \| good	0.178 \| good
2026-07-23T07:00:00.000Z	105 \| sensitive	37.123 \| moderate	162.325 \| moderate	41.069 \| good	0.963 \| good	8.143 \| good	0.178 \| good
2026-07-23T08:00:00.000Z	105 \| sensitive	37.068 \| moderate	161.864 \| moderate	37.114 \| good	1.364 \| good	4.935 \| good	0.158 \| good
2026-07-23T09:00:00.000Z	102 \| sensitive	36.361 \| moderate	158.222 \| moderate	33.121 \| good	1.585 \| good	5.256 \| good	0.137 \| good
2026-07-23T10:00:00.000Z	100 \| moderate	35.445 \| fine	154.066 \| fine	33.096 \| good	1.585 \| good	4.541 \| good	0.137 \| good
2026-07-23T11:00:00.000Z	90 \| moderate	29.718 \| fine	128.376 \| fine	35.05 \| good	1.769 \| good	4.953 \| good	0.137 \| good
2026-07-23T12:00:00.000Z	81 \| moderate	24.677 \| fine	106.661 \| fine	33.959 \| good	2.284 \| good	5.139 \| good	0.137 \| good
2026-07-23T13:00:00.000Z	77 \| moderate	23.205 \| fine	100.71 \| fine	34.913 \| good	2.281 \| good	6.5 \| good	0.137 \| good
2026-07-23T14:00:00.000Z	77 \| moderate	23.248 \| fine	102.478 \| fine	33.899 \| good	1.618 \| good	7.801 \| good	0.216 \| good
2026-07-23T15:00:00.000Z	77 \| moderate	23.248 \| fine	102.584 \| fine	32.962 \| good	1.368 \| good	5.801 \| good	0.178 \| good
2026-07-23T16:00:00.000Z	82 \| moderate	25.571 \| fine	112.276 \| fine	33.955 \| good	1.903 \| good	5.488 \| good	0.178 \| good
2026-07-23T17:00:00.000Z	71 \| moderate	20.144 \| fine	88.696 \| fine	34.99 \| good	2.952 \| good	5.3 \| good	0.299 \| good
2026-07-23T18:00:00.000Z	62 \| moderate	14.939 \| fine	67.205 \| fine	35.046 \| good	3.396 \| good	5.775 \| good	0.299 \| good
2026-07-23T19:00:00.000Z	56 \| moderate	12.482 \| fine	57.284 \| fine	36.047 \| good	2.986 \| good	4.587 \| good	0.278 \| good
2026-07-23T20:00:00.000Z	56 \| moderate	12.285 \| fine	55.102 \| fine	37.032 \| good	2.771 \| good	4.162 \| good	0.299 \| good
2026-07-23T21:00:00.000Z	60 \| moderate	13.556 \| fine	60.945 \| fine	41.058 \| good	2.138 \| good	5.043 \| good	0.319 \| good
2026-07-23T21:00:00.000Z	56 \| moderate	12.285 \| fine	55.102 \| fine	37.032 \| good	2.771 \| good	4.162 \| good	0.299 \| good
2026-07-23T22:00:00.000Z	100 \| moderate	21.279 \| fine	93.114 \| fine	70.168 \| fine	0.218 \| good	0.396 \| good	0.19 \| good
2026-07-23T23:00:00.000Z	100 \| moderate	20.551 \| fine	90.716 \| fine	69.578 \| fine	0.228 \| good	0.41 \| good	0.198 \| good
2026-07-24T00:00:00.000Z	93 \| moderate	16.718 \| fine	74.727 \| fine	67.757 \| fine	0.237 \| good	0.447 \| good	0.201 \| good
2026-07-24T01:00:00.000Z	62 \| moderate	14.78 \| fine	66.799 \| fine	54.566 \| good	0.233 \| good	0.524 \| good	0.198 \| good
2026-07-24T02:00:00.000Z	67 \| moderate	17.74 \| fine	78.667 \| fine	49.402 \| good	0.214 \| good	0.651 \| good	0.185 \| good
2026-07-24T03:00:00.000Z	71 \| moderate	19.752 \| fine	86.636 \| fine	49.576 \| good	0.186 \| good	0.846 \| good	0.166 \| good
2026-07-24T04:00:00.000Z	54 \| moderate	11.26 \| good	49.894 \| good	39.86 \| good	0.16 \| good	1.12 \| good	0.148 \| good
2026-07-24T05:00:00.000Z	56 \| moderate	12.378 \| fine	56.741 \| fine	38.058 \| good	0.144 \| good	1.36 \| good	0.135 \| good
2026-07-24T06:00:00.000Z	54 \| moderate	11.357 \| good	49.991 \| good	33.31 \| good	0.134 \| good	1.696 \| good	0.126 \| good
2026-07-24T07:00:00.000Z	56 \| moderate	12.303 \| fine	54.941 \| good	31.752 \| good	0.128 \| good	2.238 \| good	0.122 \| good
2026-07-24T08:00:00.000Z	58 \| moderate	13.084 \| fine	58.834 \| fine	34.866 \| good	0.124 \| good	2.934 \| good	0.121 \| good
2026-07-24T09:00:00.000Z	58 \| moderate	12.615 \| fine	56.786 \| fine	31.644 \| good	0.123 \| good	3.699 \| good	0.122 \| good
2026-07-24T10:00:00.000Z	60 \| moderate	14.031 \| fine	62.782 \| fine	29.034 \| good	0.123 \| good	4.697 \| good	0.125 \| good
2026-07-24T11:00:00.000Z	64 \| moderate	16.397 \| fine	72.63 \| fine	19.96 \| good	0.122 \| good	5.78 \| good	0.129 \| good
2026-07-24T12:00:00.000Z	66 \| moderate	17.196 \| fine	76.599 \| fine	21.195 \| good	0.121 \| good	6.859 \| good	0.135 \| good
2026-07-24T13:00:00.000Z	62 \| moderate	15.443 \| fine	68.691 \| fine	21.186 \| good	0.113 \| good	7.03 \| good	0.142 \| good
2026-07-24T14:00:00.000Z	62 \| moderate	14.992 \| fine	66.782 \| fine	24.432 \| good	0.103 \| good	5.651 \| good	0.148 \| good
2026-07-24T15:00:00.000Z	64 \| moderate	16.057 \| fine	70.968 \| fine	28.941 \| good	0.114 \| good	3.642 \| good	0.13 \| good
2026-07-24T16:00:00.000Z	58 \| moderate	13.136 \| fine	59.08 \| fine	33.893 \| good	0.12 \| good	1.703 \| good	0.108 \| good
2026-07-24T17:00:00.000Z	54 \| moderate	11.465 \| good	51.127 \| good	42.584 \| good	0.119 \| good	1.015 \| good	0.103 \| good
2026-07-24T18:00:00.000Z	56 \| moderate	12.07 \| good	54.041 \| good	45.259 \| good	0.109 \| good	0.682 \| good	0.099 \| good
2026-07-24T19:00:00.000Z	58 \| moderate	12.501 \| fine	56.67 \| fine	49.546 \| good	0.098 \| good	0.525 \| good	0.096 \| good
2026-07-24T20:00:00.000Z	64 \| moderate	16.381 \| fine	72.701 \| fine	50.597 \| good	0.09 \| good	0.453 \| good	0.094 \| good
2026-07-24T21:00:00.000Z	67 \| moderate	17.606 \| fine	78.579 \| fine	57.843 \| fine	0.094 \| good	0.415 \| good	0.095 \| good
2026-07-24T22:00:00.000Z	79 \| moderate	23.808 \| fine	104.461 \| fine	63.179 \| fine	0.112 \| good	0.411 \| good	0.103 \| good
2026-07-24T23:00:00.000Z	97 \| moderate	34.411 \| fine	148.309 \| fine	67.152 \| fine	0.137 \| good	0.42 \| good	0.113 \| good
2026-07-25T00:00:00.000Z	97 \| moderate	34.358 \| fine	148.379 \| fine	68.109 \| fine	0.161 \| good	0.456 \| good	0.125 \| good
2026-07-25T01:00:00.000Z	84 \| moderate	27.098 \| fine	118.804 \| fine	56.177 \| fine	0.18 \| good	0.511 \| good	0.134 \| good
2026-07-25T02:00:00.000Z	75 \| moderate	22.046 \| fine	96.861 \| fine	45.839 \| good	0.199 \| good	0.652 \| good	0.138 \| good
2026-07-25T03:00:00.000Z	71 \| moderate	20.448 \| fine	90.559 \| fine	38.396 \| good	0.209 \| good	1.201 \| good	0.14 \| good
2026-07-25T04:00:00.000Z	66 \| moderate	16.996 \| fine	74.768 \| fine	37.965 \| good	0.213 \| good	2.156 \| good	0.142 \| good
2026-07-25T05:00:00.000Z	73 \| moderate	20.917 \| fine	92.36 \| fine	33.178 \| good	0.217 \| good	2.445 \| good	0.139 \| good
2026-07-25T06:00:00.000Z	64 \| moderate	15.959 \| fine	70.857 \| fine	29.456 \| good	0.212 \| good	2.416 \| good	0.134 \| good
2026-07-25T07:00:00.000Z	54 \| moderate	10.858 \| good	47.888 \| good	30.262 \| good	0.197 \| good	2.062 \| good	0.126 \| good
2026-07-25T08:00:00.000Z	52 \| moderate	10.252 \| good	45.025 \| good	28.417 \| good	0.178 \| good	1.742 \| good	0.116 \| good
2026-07-25T09:00:00.000Z	52 \| moderate	10.273 \| good	45.18 \| good	26.631 \| good	0.164 \| good	1.564 \| good	0.109 \| good
2026-07-25T10:00:00.000Z	58 \| moderate	12.799 \| fine	57.065 \| fine	24.124 \| good	0.165 \| good	1.552 \| good	0.105 \| good
2026-07-25T11:00:00.000Z	64 \| moderate	15.641 \| fine	68.85 \| fine	29.059 \| good	0.176 \| good	1.598 \| good	0.104 \| good
2026-07-25T12:00:00.000Z	54 \| moderate	11.201 \| good	49.978 \| good	26.475 \| good	0.192 \| good	1.66 \| good	0.103 \| good
2026-07-25T13:00:00.000Z	52 \| moderate	10.088 \| good	45 \| good	27.114 \| good	0.206 \| good	1.736 \| good	0.103 \| good
2026-07-25T14:00:00.000Z	38 \| good	7.23 \| good	32.078 \| good	30.214 \| good	0.216 \| good	1.504 \| good	0.101 \| good
2026-07-25T15:00:00.000Z	38 \| good	6.645 \| good	29.357 \| good	28.708 \| good	0.22 \| good	0.953 \| good	0.097 \| good
2026-07-25T16:00:00.000Z	38 \| good	7.053 \| good	31.345 \| good	31.164 \| good	0.194 \| good	0.639 \| good	0.092 \| good
2026-07-25T17:00:00.000Z	44 \| good	8.122 \| good	35.384 \| good	38.458 \| good	0.165 \| good	0.436 \| good	0.09 \| good
2026-07-25T18:00:00.000Z	38 \| good	6.175 \| good	27.361 \| good	41.413 \| good	0.151 \| good	0.32 \| good	0.089 \| good
2026-07-25T19:00:00.000Z	49 \| good	9.176 \| good	41.084 \| good	45.294 \| good	0.146 \| good	0.275 \| good	0.091 \| good
2026-07-25T20:00:00.000Z	56 \| moderate	11.558 \| good	51.139 \| good	47.405 \| good	0.141 \| good	0.258 \| good	0.094 \| good
2026-07-25T21:00:00.000Z	56 \| moderate	12.393 \| fine	55.051 \| fine	50.834 \| good	0.132 \| good	0.257 \| good	0.095 \| good

Hermiston

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Hermiston, Oregon air quality map: Track AQI near you

0.16ppm

How accurate is Oregon, USA air quality data?

Air quality data and pollutant measurements for Oregon, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Hermiston, Oregon updated?

The air quality for Hermiston, Oregon is updated every hour.

When was the worst air quality at Hermiston, Oregon in the last 24 hrs?

The worst air quality in Hermiston, Oregon in the last 24 hours was observed at 01:00:00 on 2026-07-23.

When was the best air quality at Hermiston, Oregon in the last 24 hrs?

In the last 24 hrs, the best air quality in Hermiston, Oregon was observed at 08:00:00 on 2026-07-23.

What is the current air quality in Hermiston, Oregon?

The current air quality in Hermiston, Oregon is 56, categorized as Moderate based on real-time data.

What pollutant is the most common in Hermiston, Oregon?

The most common pollutant in Hermiston, Oregon is PM2.5.

What should I do if the air quality in Hermiston, Oregon is poor?

If the air quality in Hermiston, Oregon is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Hermiston, Oregon?

The current PM_2.5 concentration at Hermiston, Oregon is 12.285 μg/m³.

What is the current concentration of PM₁₀ in Hermiston, Oregon?

The current PM₁₀ concentration at Hermiston, Oregon is 55.102 μg/m³.

What is the current concentration of carbon monoxide (CO) in Hermiston, Oregon?

The current carbon monoxide (CO) concentration at Hermiston, Oregon is 0.299 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Hermiston, Oregon?

The current sulfur dioxide (SO₂) concentration at Hermiston, Oregon is 2.771 ppb.

What is the current concentration of ozone (O₃) in Hermiston, Oregon?

The current ozone (O₃) concentration at Hermiston, Oregon is 37.032 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Hermiston, Oregon?

The current nitrogen dioxide (NO₂) concentration at Hermiston, Oregon is 4.162 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T22:00:00.000Z	75 \| moderate	21.905 \| fine	95.124 \| fine	49.072 \| good	2.64 \| good	8.245 \| good	0.278 \| good
2026-07-21T23:00:00.000Z	75 \| moderate	21.759 \| fine	94.695 \| fine	57.025 \| fine	1.195 \| good	7.62 \| good	0.357 \| good
2026-07-22T00:00:00.000Z	77 \| moderate	23.043 \| fine	100.742 \| fine	61.974 \| fine	0.989 \| good	9.283 \| good	0.382 \| good
2026-07-22T01:00:00.000Z	84 \| moderate	23.702 \| fine	102.64 \| fine	64.942 \| fine	0.966 \| good	8.565 \| good	0.365 \| good
2026-07-22T02:00:00.000Z	90 \| moderate	24.738 \| fine	106.404 \| fine	66.901 \| fine	0.966 \| good	9.054 \| good	0.344 \| good
2026-07-22T03:00:00.000Z	93 \| moderate	26.451 \| fine	114.126 \| fine	67.83 \| fine	0.992 \| good	9.344 \| good	0.343 \| good
2026-07-22T04:00:00.000Z	82 \| moderate	25.64 \| fine	110.69 \| fine	60.844 \| fine	1.601 \| good	10.076 \| good	0.344 \| good
2026-07-22T05:00:00.000Z	82 \| moderate	26.074 \| fine	112.521 \| fine	53.954 \| good	1.58 \| good	10.099 \| good	0.401 \| good
2026-07-22T06:00:00.000Z	82 \| moderate	26.423 \| fine	114.178 \| fine	47.025 \| good	0.976 \| good	7.268 \| good	0.298 \| good
2026-07-22T07:00:00.000Z	82 \| moderate	26.383 \| fine	114.289 \| fine	35.154 \| good	0.976 \| good	7.352 \| good	0.298 \| good
2026-07-22T08:00:00.000Z	84 \| moderate	26.752 \| fine	116.603 \| fine	32.106 \| good	0.952 \| good	7.087 \| good	0.199 \| good
2026-07-22T09:00:00.000Z	84 \| moderate	26.838 \| fine	116.516 \| fine	29.091 \| good	0.911 \| good	7.717 \| good	0.216 \| good
2026-07-22T10:00:00.000Z	84 \| moderate	26.89 \| fine	116.468 \| fine	26.128 \| good	0.914 \| good	12.341 \| good	0.179 \| good
2026-07-22T11:00:00.000Z	84 \| moderate	27.205 \| fine	118.501 \| fine	24.121 \| good	0.913 \| good	19.24 \| good	0.277 \| good
2026-07-22T12:00:00.000Z	84 \| moderate	27.29 \| fine	118.234 \| fine	22.07 \| good	0.931 \| good	23.817 \| good	0.219 \| good
2026-07-22T13:00:00.000Z	84 \| moderate	27.489 \| fine	118.338 \| fine	24.066 \| good	0.926 \| good	24.006 \| good	0.219 \| good
2026-07-22T14:00:00.000Z	86 \| moderate	27.863 \| fine	120.163 \| fine	22.058 \| good	0.778 \| good	26.581 \| good	0.298 \| good
2026-07-22T15:00:00.000Z	86 \| moderate	28.057 \| fine	122.239 \| fine	24.024 \| good	0.772 \| good	24.338 \| good	0.335 \| good
2026-07-22T16:00:00.000Z	86 \| moderate	28.372 \| fine	122.356 \| fine	25.11 \| good	1.914 \| good	8.94 \| good	0.315 \| good
2026-07-22T17:00:00.000Z	88 \| moderate	28.931 \| fine	124.963 \| fine	29.033 \| good	1.926 \| good	8.075 \| good	0.335 \| good
2026-07-22T18:00:00.000Z	88 \| moderate	29.267 \| fine	126.876 \| fine	29.118 \| good	2.059 \| good	7.194 \| good	0.332 \| good
2026-07-22T19:00:00.000Z	90 \| moderate	29.511 \| fine	126.728 \| fine	36.124 \| good	2.249 \| good	10.186 \| good	0.312 \| good
2026-07-22T20:00:00.000Z	90 \| moderate	29.868 \| fine	128.621 \| fine	41.159 \| good	4.628 \| good	9.243 \| good	0.292 \| good
2026-07-22T21:00:00.000Z	102 \| sensitive	36.26 \| moderate	158.003 \| moderate	50.096 \| good	2.618 \| good	8.322 \| good	0.291 \| good
2026-07-22T22:00:00.000Z	102 \| sensitive	36.224 \| moderate	158.258 \| moderate	56.082 \| fine	1.827 \| good	8.997 \| good	0.316 \| good
2026-07-22T23:00:00.000Z	107 \| sensitive	37.677 \| moderate	165.629 \| moderate	62.965 \| fine	3.075 \| good	8.528 \| good	0.282 \| good
2026-07-23T00:00:00.000Z	107 \| sensitive	38.158 \| moderate	167.671 \| moderate	63.944 \| fine	1.474 \| good	8.977 \| good	0.282 \| good
2026-07-23T01:00:00.000Z	107 \| sensitive	37.786 \| moderate	165.885 \| moderate	64.982 \| fine	1.875 \| good	7.406 \| good	0.301 \| good
2026-07-23T02:00:00.000Z	105 \| sensitive	36.947 \| moderate	162.056 \| moderate	63.909 \| fine	1.647 \| good	7.632 \| good	0.281 \| good
2026-07-23T03:00:00.000Z	86 \| moderate	27.589 \| fine	119.373 \| fine	55.225 \| fine	0.354 \| good	3.124 \| good	0.305 \| good
2026-07-23T04:00:00.000Z	102 \| sensitive	35.51 \| moderate	153.972 \| fine	57.916 \| fine	1.203 \| good	7.816 \| good	0.22 \| good
2026-07-23T05:00:00.000Z	105 \| sensitive	36.832 \| moderate	160.41 \| moderate	49.06 \| good	1.039 \| good	6.343 \| good	0.24 \| good
2026-07-23T06:00:00.000Z	105 \| sensitive	37.28 \| moderate	162.79 \| moderate	44.982 \| good	0.963 \| good	8.141 \| good	0.178 \| good
2026-07-23T07:00:00.000Z	105 \| sensitive	37.123 \| moderate	162.325 \| moderate	41.069 \| good	0.963 \| good	8.143 \| good	0.178 \| good
2026-07-23T08:00:00.000Z	105 \| sensitive	37.068 \| moderate	161.864 \| moderate	37.114 \| good	1.364 \| good	4.935 \| good	0.158 \| good
2026-07-23T09:00:00.000Z	102 \| sensitive	36.361 \| moderate	158.222 \| moderate	33.121 \| good	1.585 \| good	5.256 \| good	0.137 \| good
2026-07-23T10:00:00.000Z	100 \| moderate	35.445 \| fine	154.066 \| fine	33.096 \| good	1.585 \| good	4.541 \| good	0.137 \| good
2026-07-23T11:00:00.000Z	90 \| moderate	29.718 \| fine	128.376 \| fine	35.05 \| good	1.769 \| good	4.953 \| good	0.137 \| good
2026-07-23T12:00:00.000Z	81 \| moderate	24.677 \| fine	106.661 \| fine	33.959 \| good	2.284 \| good	5.139 \| good	0.137 \| good
2026-07-23T13:00:00.000Z	77 \| moderate	23.205 \| fine	100.71 \| fine	34.913 \| good	2.281 \| good	6.5 \| good	0.137 \| good
2026-07-23T14:00:00.000Z	77 \| moderate	23.248 \| fine	102.478 \| fine	33.899 \| good	1.618 \| good	7.801 \| good	0.216 \| good
2026-07-23T15:00:00.000Z	77 \| moderate	23.248 \| fine	102.584 \| fine	32.962 \| good	1.368 \| good	5.801 \| good	0.178 \| good
2026-07-23T16:00:00.000Z	82 \| moderate	25.571 \| fine	112.276 \| fine	33.955 \| good	1.903 \| good	5.488 \| good	0.178 \| good
2026-07-23T17:00:00.000Z	71 \| moderate	20.144 \| fine	88.696 \| fine	34.99 \| good	2.952 \| good	5.3 \| good	0.299 \| good
2026-07-23T18:00:00.000Z	62 \| moderate	14.939 \| fine	67.205 \| fine	35.046 \| good	3.396 \| good	5.775 \| good	0.299 \| good
2026-07-23T19:00:00.000Z	56 \| moderate	12.482 \| fine	57.284 \| fine	36.047 \| good	2.986 \| good	4.587 \| good	0.278 \| good
2026-07-23T20:00:00.000Z	56 \| moderate	12.285 \| fine	55.102 \| fine	37.032 \| good	2.771 \| good	4.162 \| good	0.299 \| good
2026-07-23T21:00:00.000Z	60 \| moderate	13.556 \| fine	60.945 \| fine	41.058 \| good	2.138 \| good	5.043 \| good	0.319 \| good
2026-07-23T21:00:00.000Z	56 \| moderate	12.285 \| fine	55.102 \| fine	37.032 \| good	2.771 \| good	4.162 \| good	0.299 \| good
2026-07-23T22:00:00.000Z	100 \| moderate	21.279 \| fine	93.114 \| fine	70.168 \| fine	0.218 \| good	0.396 \| good	0.19 \| good
2026-07-23T23:00:00.000Z	100 \| moderate	20.551 \| fine	90.716 \| fine	69.578 \| fine	0.228 \| good	0.41 \| good	0.198 \| good
2026-07-24T00:00:00.000Z	93 \| moderate	16.718 \| fine	74.727 \| fine	67.757 \| fine	0.237 \| good	0.447 \| good	0.201 \| good
2026-07-24T01:00:00.000Z	62 \| moderate	14.78 \| fine	66.799 \| fine	54.566 \| good	0.233 \| good	0.524 \| good	0.198 \| good
2026-07-24T02:00:00.000Z	67 \| moderate	17.74 \| fine	78.667 \| fine	49.402 \| good	0.214 \| good	0.651 \| good	0.185 \| good
2026-07-24T03:00:00.000Z	71 \| moderate	19.752 \| fine	86.636 \| fine	49.576 \| good	0.186 \| good	0.846 \| good	0.166 \| good
2026-07-24T04:00:00.000Z	54 \| moderate	11.26 \| good	49.894 \| good	39.86 \| good	0.16 \| good	1.12 \| good	0.148 \| good
2026-07-24T05:00:00.000Z	56 \| moderate	12.378 \| fine	56.741 \| fine	38.058 \| good	0.144 \| good	1.36 \| good	0.135 \| good
2026-07-24T06:00:00.000Z	54 \| moderate	11.357 \| good	49.991 \| good	33.31 \| good	0.134 \| good	1.696 \| good	0.126 \| good
2026-07-24T07:00:00.000Z	56 \| moderate	12.303 \| fine	54.941 \| good	31.752 \| good	0.128 \| good	2.238 \| good	0.122 \| good
2026-07-24T08:00:00.000Z	58 \| moderate	13.084 \| fine	58.834 \| fine	34.866 \| good	0.124 \| good	2.934 \| good	0.121 \| good
2026-07-24T09:00:00.000Z	58 \| moderate	12.615 \| fine	56.786 \| fine	31.644 \| good	0.123 \| good	3.699 \| good	0.122 \| good
2026-07-24T10:00:00.000Z	60 \| moderate	14.031 \| fine	62.782 \| fine	29.034 \| good	0.123 \| good	4.697 \| good	0.125 \| good
2026-07-24T11:00:00.000Z	64 \| moderate	16.397 \| fine	72.63 \| fine	19.96 \| good	0.122 \| good	5.78 \| good	0.129 \| good
2026-07-24T12:00:00.000Z	66 \| moderate	17.196 \| fine	76.599 \| fine	21.195 \| good	0.121 \| good	6.859 \| good	0.135 \| good
2026-07-24T13:00:00.000Z	62 \| moderate	15.443 \| fine	68.691 \| fine	21.186 \| good	0.113 \| good	7.03 \| good	0.142 \| good
2026-07-24T14:00:00.000Z	62 \| moderate	14.992 \| fine	66.782 \| fine	24.432 \| good	0.103 \| good	5.651 \| good	0.148 \| good
2026-07-24T15:00:00.000Z	64 \| moderate	16.057 \| fine	70.968 \| fine	28.941 \| good	0.114 \| good	3.642 \| good	0.13 \| good
2026-07-24T16:00:00.000Z	58 \| moderate	13.136 \| fine	59.08 \| fine	33.893 \| good	0.12 \| good	1.703 \| good	0.108 \| good
2026-07-24T17:00:00.000Z	54 \| moderate	11.465 \| good	51.127 \| good	42.584 \| good	0.119 \| good	1.015 \| good	0.103 \| good
2026-07-24T18:00:00.000Z	56 \| moderate	12.07 \| good	54.041 \| good	45.259 \| good	0.109 \| good	0.682 \| good	0.099 \| good
2026-07-24T19:00:00.000Z	58 \| moderate	12.501 \| fine	56.67 \| fine	49.546 \| good	0.098 \| good	0.525 \| good	0.096 \| good
2026-07-24T20:00:00.000Z	64 \| moderate	16.381 \| fine	72.701 \| fine	50.597 \| good	0.09 \| good	0.453 \| good	0.094 \| good
2026-07-24T21:00:00.000Z	67 \| moderate	17.606 \| fine	78.579 \| fine	57.843 \| fine	0.094 \| good	0.415 \| good	0.095 \| good
2026-07-24T22:00:00.000Z	79 \| moderate	23.808 \| fine	104.461 \| fine	63.179 \| fine	0.112 \| good	0.411 \| good	0.103 \| good
2026-07-24T23:00:00.000Z	97 \| moderate	34.411 \| fine	148.309 \| fine	67.152 \| fine	0.137 \| good	0.42 \| good	0.113 \| good
2026-07-25T00:00:00.000Z	97 \| moderate	34.358 \| fine	148.379 \| fine	68.109 \| fine	0.161 \| good	0.456 \| good	0.125 \| good
2026-07-25T01:00:00.000Z	84 \| moderate	27.098 \| fine	118.804 \| fine	56.177 \| fine	0.18 \| good	0.511 \| good	0.134 \| good
2026-07-25T02:00:00.000Z	75 \| moderate	22.046 \| fine	96.861 \| fine	45.839 \| good	0.199 \| good	0.652 \| good	0.138 \| good
2026-07-25T03:00:00.000Z	71 \| moderate	20.448 \| fine	90.559 \| fine	38.396 \| good	0.209 \| good	1.201 \| good	0.14 \| good
2026-07-25T04:00:00.000Z	66 \| moderate	16.996 \| fine	74.768 \| fine	37.965 \| good	0.213 \| good	2.156 \| good	0.142 \| good
2026-07-25T05:00:00.000Z	73 \| moderate	20.917 \| fine	92.36 \| fine	33.178 \| good	0.217 \| good	2.445 \| good	0.139 \| good
2026-07-25T06:00:00.000Z	64 \| moderate	15.959 \| fine	70.857 \| fine	29.456 \| good	0.212 \| good	2.416 \| good	0.134 \| good
2026-07-25T07:00:00.000Z	54 \| moderate	10.858 \| good	47.888 \| good	30.262 \| good	0.197 \| good	2.062 \| good	0.126 \| good
2026-07-25T08:00:00.000Z	52 \| moderate	10.252 \| good	45.025 \| good	28.417 \| good	0.178 \| good	1.742 \| good	0.116 \| good
2026-07-25T09:00:00.000Z	52 \| moderate	10.273 \| good	45.18 \| good	26.631 \| good	0.164 \| good	1.564 \| good	0.109 \| good
2026-07-25T10:00:00.000Z	58 \| moderate	12.799 \| fine	57.065 \| fine	24.124 \| good	0.165 \| good	1.552 \| good	0.105 \| good
2026-07-25T11:00:00.000Z	64 \| moderate	15.641 \| fine	68.85 \| fine	29.059 \| good	0.176 \| good	1.598 \| good	0.104 \| good
2026-07-25T12:00:00.000Z	54 \| moderate	11.201 \| good	49.978 \| good	26.475 \| good	0.192 \| good	1.66 \| good	0.103 \| good
2026-07-25T13:00:00.000Z	52 \| moderate	10.088 \| good	45 \| good	27.114 \| good	0.206 \| good	1.736 \| good	0.103 \| good
2026-07-25T14:00:00.000Z	38 \| good	7.23 \| good	32.078 \| good	30.214 \| good	0.216 \| good	1.504 \| good	0.101 \| good
2026-07-25T15:00:00.000Z	38 \| good	6.645 \| good	29.357 \| good	28.708 \| good	0.22 \| good	0.953 \| good	0.097 \| good
2026-07-25T16:00:00.000Z	38 \| good	7.053 \| good	31.345 \| good	31.164 \| good	0.194 \| good	0.639 \| good	0.092 \| good
2026-07-25T17:00:00.000Z	44 \| good	8.122 \| good	35.384 \| good	38.458 \| good	0.165 \| good	0.436 \| good	0.09 \| good
2026-07-25T18:00:00.000Z	38 \| good	6.175 \| good	27.361 \| good	41.413 \| good	0.151 \| good	0.32 \| good	0.089 \| good
2026-07-25T19:00:00.000Z	49 \| good	9.176 \| good	41.084 \| good	45.294 \| good	0.146 \| good	0.275 \| good	0.091 \| good
2026-07-25T20:00:00.000Z	56 \| moderate	11.558 \| good	51.139 \| good	47.405 \| good	0.141 \| good	0.258 \| good	0.094 \| good
2026-07-25T21:00:00.000Z	56 \| moderate	12.393 \| fine	55.051 \| fine	50.834 \| good	0.132 \| good	0.257 \| good	0.095 \| good

Hermiston, Oregon live air quality index now

Major air pollutants in Hermiston, Oregon

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Hermiston, Oregon air quality forecast and history

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Hermiston, Oregon air quality map: Track AQI near you

Air quality in nearby cities

Kennewick, Washington

Pendleton, Oregon

Pasco, Washington

Richland, Washington

West Richland, Washington

Grandview, Washington

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Frequently asked questions

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What is the current concentration of PM2.5 in Hermiston, Oregon?

What is the current concentration of PM10 in Hermiston, Oregon?

What is the current concentration of carbon monoxide (CO) in Hermiston, Oregon?

What is the current concentration of sulfur dioxide (SO2) in Hermiston, Oregon?

What is the current concentration of ozone (O3) in Hermiston, Oregon?

What is the current concentration of nitrogen dioxide (NO2) in Hermiston, Oregon?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the current concentration of PM_2.5 in Hermiston, Oregon?

What is the current concentration of PM₁₀ in Hermiston, Oregon?

What is the current concentration of sulfur dioxide (SO₂) in Hermiston, Oregon?

What is the current concentration of ozone (O₃) in Hermiston, Oregon?

What is the current concentration of nitrogen dioxide (NO₂) in Hermiston, Oregon?