What is the current concentration of PM10 in Spearfish, South Dakota?

The current PM10 concentration at Spearfish, South Dakota is 44.647 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Spearfish, South Dakota?

The current sulfur dioxide (SO2) concentration at Spearfish, South Dakota is 0.129 ppb.

What is the current concentration of ozone (O3) in Spearfish, South Dakota?

The current ozone (O3) concentration at Spearfish, South Dakota is 45.358 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Spearfish, South Dakota?

The current nitrogen dioxide (NO2) concentration at Spearfish, South Dakota is 0.43 ppb.

Spearfish, South Dakota live air quality index now

Q: What is the current concentration of PM2.5 in Spearfish, South Dakota?

The current PM2.5 concentration at Spearfish, South Dakota is 10.013 μg/m3.

Stay updated with real-time air quality in Spearfish, South Dakota 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

Spearfish, South Dakota

Last updated: ... (Local time)

Major air pollutants in Spearfish, South Dakota

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

10.01 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

44.65 μg/m³

155

255

425

605+

Ozone (O₃)

45.36 ppb

201

201+

Sulfur Dioxide (SO₂)

0.13 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

0.43 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.15 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Spearfish, South Dakota

Get Live Pollen Counts

Spearfish, South Dakota

Scroll To Air Quality Map

Track live Spearfish, South Dakota air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-12T19:00:00.000Z	66 \| moderate	17.102 \| fine	75.929 \| fine	53.77 \| good	0.151 \| good	0.931 \| good	0.18 \| good
2026-08-12T20:00:00.000Z	60 \| moderate	13.885 \| fine	63 \| fine	53.885 \| good	0.208 \| good	1.513 \| good	0.204 \| good
2026-08-12T21:00:00.000Z	60 \| moderate	14.217 \| fine	63 \| fine	54.601 \| good	0.204 \| good	1.556 \| good	0.208 \| good
2026-08-12T22:00:00.000Z	62 \| moderate	14.935 \| fine	66.821 \| fine	54.314 \| good	0.22 \| good	1.709 \| good	0.22 \| good
2026-08-12T23:00:00.000Z	58 \| moderate	12.525 \| fine	57 \| fine	50.23 \| good	0.179 \| good	1.392 \| good	0.213 \| good
2026-08-13T00:00:00.000Z	66 \| moderate	16.786 \| fine	74.678 \| fine	50.887 \| good	0.075 \| good	1.31 \| good	0.193 \| good
2026-08-13T01:00:00.000Z	60 \| moderate	13.664 \| fine	61.384 \| fine	48.964 \| good	0.066 \| good	1.261 \| good	0.193 \| good
2026-08-13T02:00:00.000Z	56 \| moderate	12.24 \| fine	55.325 \| fine	46.915 \| good	0.062 \| good	1.36 \| good	0.193 \| good
2026-08-13T03:00:00.000Z	64 \| moderate	15.629 \| fine	69.929 \| fine	45.024 \| good	0.059 \| good	1.586 \| good	0.192 \| good
2026-08-13T04:00:00.000Z	60 \| moderate	13.554 \| fine	61.118 \| fine	43.903 \| good	0.058 \| good	1.604 \| good	0.19 \| good
2026-08-13T05:00:00.000Z	56 \| moderate	12.226 \| fine	55.028 \| fine	42.639 \| good	0.057 \| good	1.534 \| good	0.189 \| good
2026-08-13T06:00:00.000Z	58 \| moderate	12.754 \| fine	57.118 \| fine	41.668 \| good	0.058 \| good	1.598 \| good	0.19 \| good
2026-08-13T07:00:00.000Z	60 \| moderate	13.875 \| fine	62.047 \| fine	38.207 \| good	0.061 \| good	1.372 \| good	0.189 \| good
2026-08-13T08:00:00.000Z	56 \| moderate	11.881 \| good	52.929 \| good	35.975 \| good	0.062 \| good	1.365 \| good	0.188 \| good
2026-08-13T09:00:00.000Z	58 \| moderate	13.41 \| fine	60.616 \| fine	33.518 \| good	0.061 \| good	1.469 \| good	0.188 \| good
2026-08-13T10:00:00.000Z	62 \| moderate	15.131 \| fine	67.75 \| fine	35.362 \| good	0.06 \| good	1.322 \| good	0.187 \| good
2026-08-13T11:00:00.000Z	62 \| moderate	15.279 \| fine	67.929 \| fine	29.734 \| good	0.055 \| good	1.248 \| good	0.187 \| good
2026-08-13T12:00:00.000Z	60 \| moderate	13.579 \| fine	61 \| fine	29.552 \| good	0.059 \| good	1.958 \| good	0.191 \| good
2026-08-13T13:00:00.000Z	54 \| moderate	11.224 \| good	49.91 \| good	30.238 \| good	0.069 \| good	1.252 \| good	0.188 \| good
2026-08-13T14:00:00.000Z	60 \| moderate	13.722 \| fine	61.687 \| fine	34.173 \| good	0.077 \| good	1.058 \| good	0.19 \| good
2026-08-13T15:00:00.000Z	56 \| moderate	12.19 \| fine	54.941 \| good	41.021 \| good	0.082 \| good	0.965 \| good	0.193 \| good
2026-08-13T16:00:00.000Z	56 \| moderate	11.697 \| good	51.433 \| good	44.804 \| good	0.08 \| good	0.645 \| good	0.192 \| good
2026-08-13T17:00:00.000Z	58 \| moderate	12.617 \| fine	56.795 \| fine	45.528 \| good	0.077 \| good	0.476 \| good	0.191 \| good
2026-08-13T18:00:00.000Z	52 \| moderate	10.022 \| good	44.272 \| good	46.898 \| good	0.074 \| good	0.365 \| good	0.191 \| good
2026-08-13T19:00:00.000Z	58 \| moderate	13.299 \| fine	60.616 \| fine	45.577 \| good	0.079 \| good	0.328 \| good	0.193 \| good
2026-08-13T20:00:00.000Z	58 \| moderate	12.589 \| fine	56.616 \| fine	45.159 \| good	0.084 \| good	0.333 \| good	0.196 \| good
2026-08-13T21:00:00.000Z	56 \| moderate	11.813 \| good	52.495 \| good	44.721 \| good	0.087 \| good	0.353 \| good	0.198 \| good
2026-08-13T22:00:00.000Z	58 \| moderate	12.841 \| fine	58.616 \| fine	43.535 \| good	0.087 \| good	0.366 \| good	0.2 \| good
2026-08-13T23:00:00.000Z	62 \| moderate	15.366 \| fine	68.35 \| fine	43.631 \| good	0.081 \| good	0.4 \| good	0.202 \| good
2026-08-14T00:00:00.000Z	60 \| moderate	13.711 \| fine	61.687 \| fine	40.886 \| good	0.061 \| good	0.407 \| good	0.193 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	10.758 \| good	47.477 \| good	39.389 \| good	0.065 \| good	0.558 \| good	0.194 \| good
2026-08-14T02:00:00.000Z	56 \| moderate	11.954 \| good	53.24 \| good	40.891 \| good	0.073 \| good	0.751 \| good	0.196 \| good
2026-08-14T03:00:00.000Z	66 \| moderate	17.028 \| fine	75.6 \| fine	40.863 \| good	0.08 \| good	0.971 \| good	0.196 \| good
2026-08-14T04:00:00.000Z	62 \| moderate	15.212 \| fine	68.498 \| fine	39.557 \| good	0.084 \| good	1.213 \| good	0.197 \| good
2026-08-14T05:00:00.000Z	62 \| moderate	14.655 \| fine	65 \| fine	36.789 \| good	0.088 \| good	1.441 \| good	0.197 \| good
2026-08-14T06:00:00.000Z	58 \| moderate	13.347 \| fine	59.866 \| fine	33.84 \| good	0.09 \| good	1.769 \| good	0.199 \| good
2026-08-14T07:00:00.000Z	60 \| moderate	13.579 \| fine	61 \| fine	33.55 \| good	0.093 \| good	2.061 \| good	0.2 \| good
2026-08-14T08:00:00.000Z	56 \| moderate	12.262 \| fine	55.51 \| fine	35.108 \| good	0.097 \| good	2.161 \| good	0.201 \| good
2026-08-14T09:00:00.000Z	56 \| moderate	12.334 \| fine	55.807 \| fine	35.398 \| good	0.095 \| good	2.309 \| good	0.202 \| good
2026-08-14T10:00:00.000Z	64 \| moderate	15.948 \| fine	70.616 \| fine	34.851 \| good	0.091 \| good	2.393 \| good	0.202 \| good
2026-08-14T11:00:00.000Z	60 \| moderate	13.576 \| fine	61 \| fine	28.892 \| good	0.089 \| good	2.367 \| good	0.201 \| good
2026-08-14T12:00:00.000Z	52 \| moderate	9.975 \| good	44.213 \| good	30.401 \| good	0.06 \| good	2.133 \| good	0.177 \| good
2026-08-14T13:00:00.000Z	49 \| good	9.027 \| good	39.838 \| good	34.511 \| good	0.055 \| good	1.928 \| good	0.172 \| good
2026-08-14T14:00:00.000Z	52 \| moderate	10.298 \| good	45.433 \| good	36.656 \| good	0.059 \| good	1.322 \| good	0.165 \| good
2026-08-14T15:00:00.000Z	49 \| good	8.964 \| good	39.646 \| good	40.178 \| good	0.078 \| good	0.888 \| good	0.159 \| good
2026-08-14T16:00:00.000Z	52 \| moderate	9.957 \| good	44.182 \| good	44.444 \| good	0.107 \| good	0.613 \| good	0.154 \| good
2026-08-14T17:00:00.000Z	52 \| moderate	10.013 \| good	44.647 \| good	45.358 \| good	0.129 \| good	0.43 \| good	0.151 \| good
2026-08-14T18:00:00.000Z	44 \| good	7.951 \| good	34.839 \| good	45.293 \| good	0.139 \| good	0.327 \| good	0.15 \| good
2026-08-14T18:00:00.000Z	52 \| moderate	10.013 \| good	44.647 \| good	45.358 \| good	0.129 \| good	0.43 \| good	0.151 \| good
2026-08-14T19:00:00.000Z	56 \| moderate	11.815 \| good	52.757 \| good	44.564 \| good	0.138 \| good	0.278 \| good	0.152 \| good
2026-08-14T20:00:00.000Z	44 \| good	8.115 \| good	35.845 \| good	45.172 \| good	0.129 \| good	0.255 \| good	0.152 \| good
2026-08-14T21:00:00.000Z	49 \| good	9.293 \| good	41.438 \| good	46.153 \| good	0.121 \| good	0.257 \| good	0.154 \| good
2026-08-14T22:00:00.000Z	52 \| moderate	9.683 \| good	43.013 \| good	47.347 \| good	0.116 \| good	0.303 \| good	0.156 \| good
2026-08-14T23:00:00.000Z	54 \| moderate	11.064 \| good	48.824 \| good	47.163 \| good	0.115 \| good	0.341 \| good	0.158 \| good
2026-08-15T00:00:00.000Z	62 \| moderate	14.865 \| fine	66.647 \| fine	43.013 \| good	0.117 \| good	0.477 \| good	0.161 \| good
2026-08-15T01:00:00.000Z	49 \| good	9.359 \| good	41.741 \| good	39.468 \| good	0.118 \| good	0.7 \| good	0.163 \| good
2026-08-15T02:00:00.000Z	49 \| good	9.321 \| good	41.708 \| good	40.47 \| good	0.111 \| good	1.525 \| good	0.166 \| good
2026-08-15T03:00:00.000Z	58 \| moderate	13.257 \| fine	59.592 \| fine	38.45 \| good	0.112 \| good	2.19 \| good	0.169 \| good
2026-08-15T04:00:00.000Z	60 \| moderate	14.42 \| fine	64.647 \| fine	35.94 \| good	0.117 \| good	2.282 \| good	0.172 \| good
2026-08-15T05:00:00.000Z	54 \| moderate	10.737 \| good	47.622 \| good	32.825 \| good	0.122 \| good	2.211 \| good	0.175 \| good
2026-08-15T06:00:00.000Z	56 \| moderate	12.33 \| fine	55.627 \| fine	34.316 \| good	0.124 \| good	2.107 \| good	0.178 \| good
2026-08-15T07:00:00.000Z	52 \| moderate	10.403 \| good	45.845 \| good	33.353 \| good	0.126 \| good	2.105 \| good	0.181 \| good
2026-08-15T08:00:00.000Z	54 \| moderate	11.321 \| good	49.864 \| good	32.309 \| good	0.127 \| good	2.198 \| good	0.183 \| good
2026-08-15T09:00:00.000Z	52 \| moderate	10.03 \| good	44.698 \| good	31.377 \| good	0.126 \| good	2.356 \| good	0.185 \| good
2026-08-15T10:00:00.000Z	52 \| moderate	10.171 \| good	44.845 \| good	30.322 \| good	0.123 \| good	2.49 \| good	0.186 \| good
2026-08-15T11:00:00.000Z	54 \| moderate	10.517 \| good	46.622 \| good	28.047 \| good	0.117 \| good	2.643 \| good	0.186 \| good
2026-08-15T12:00:00.000Z	44 \| good	7.852 \| good	34.317 \| good	29.538 \| good	0.107 \| good	2.672 \| good	0.183 \| good
2026-08-15T13:00:00.000Z	49 \| good	9.468 \| good	42.346 \| good	32.989 \| good	0.084 \| good	2.156 \| good	0.174 \| good
2026-08-15T14:00:00.000Z	49 \| good	9.066 \| good	40.082 \| good	35.659 \| good	0.065 \| good	1.001 \| good	0.167 \| good
2026-08-15T15:00:00.000Z	44 \| good	7.524 \| good	32.969 \| good	39.568 \| good	0.082 \| good	0.548 \| good	0.169 \| good
2026-08-15T16:00:00.000Z	39 \| good	5.162 \| good	22.159 \| good	42.403 \| good	0.132 \| good	0.416 \| good	0.171 \| good
2026-08-15T17:00:00.000Z	41 \| good	5.594 \| good	23.921 \| good	44.052 \| good	0.16 \| good	0.343 \| good	0.173 \| good
2026-08-15T18:00:00.000Z	40 \| good	5.888 \| good	25.701 \| good	42.822 \| good	0.178 \| good	0.276 \| good	0.171 \| good
2026-08-15T19:00:00.000Z	49 \| good	8.927 \| good	39.727 \| good	41.687 \| good	0.178 \| good	0.252 \| good	0.168 \| good
2026-08-15T20:00:00.000Z	49 \| good	9.058 \| good	40.433 \| good	40.629 \| good	0.19 \| good	0.262 \| good	0.169 \| good
2026-08-15T21:00:00.000Z	44 \| good	7.554 \| good	33.078 \| good	43.023 \| good	0.196 \| good	0.299 \| good	0.167 \| good
2026-08-15T22:00:00.000Z	44 \| good	7.701 \| good	33.896 \| good	45.829 \| good	0.205 \| good	0.277 \| good	0.167 \| good
2026-08-15T23:00:00.000Z	49 \| good	8.682 \| good	37.996 \| good	45.712 \| good	0.214 \| good	0.288 \| good	0.168 \| good
2026-08-16T00:00:00.000Z	56 \| moderate	12.222 \| fine	55.301 \| fine	44.646 \| good	0.222 \| good	0.328 \| good	0.169 \| good
2026-08-16T01:00:00.000Z	52 \| moderate	9.628 \| good	42.894 \| good	40.168 \| good	0.221 \| good	0.572 \| good	0.17 \| good
2026-08-16T02:00:00.000Z	44 \| good	7.866 \| good	34.431 \| good	38.008 \| good	0.219 \| good	1.392 \| good	0.172 \| good
2026-08-16T03:00:00.000Z	54 \| moderate	11.338 \| good	50.167 \| good	34.869 \| good	0.219 \| good	2.227 \| good	0.174 \| good
2026-08-16T04:00:00.000Z	62 \| moderate	14.91 \| fine	66.707 \| fine	32.18 \| good	0.223 \| good	2.513 \| good	0.174 \| good
2026-08-16T05:00:00.000Z	52 \| moderate	9.559 \| good	42.772 \| good	30.588 \| good	0.228 \| good	2.789 \| good	0.174 \| good
2026-08-16T06:00:00.000Z	49 \| good	8.897 \| good	39.05 \| good	30.712 \| good	0.223 \| good	3.174 \| good	0.174 \| good
2026-08-16T07:00:00.000Z	52 \| moderate	9.851 \| good	43.845 \| good	31.391 \| good	0.209 \| good	3.483 \| good	0.174 \| good
2026-08-16T08:00:00.000Z	52 \| moderate	9.871 \| good	43.872 \| good	30.215 \| good	0.186 \| good	3.686 \| good	0.174 \| good
2026-08-16T09:00:00.000Z	38 \| good	7.096 \| good	31.456 \| good	32.355 \| good	0.17 \| good	3.668 \| good	0.173 \| good
2026-08-16T10:00:00.000Z	44 \| good	8.088 \| good	35.337 \| good	34.212 \| good	0.154 \| good	3.61 \| good	0.171 \| good
2026-08-16T11:00:00.000Z	49 \| good	9.011 \| good	40.365 \| good	31.551 \| good	0.136 \| good	3.646 \| good	0.17 \| good
2026-08-16T12:00:00.000Z	38 \| good	6.834 \| good	30.431 \| good	30.921 \| good	0.125 \| good	3.516 \| good	0.169 \| good
2026-08-16T13:00:00.000Z	44 \| good	8.361 \| good	36.832 \| good	31.468 \| good	0.125 \| good	2.703 \| good	0.168 \| good
2026-08-16T14:00:00.000Z	38 \| good	7.039 \| good	31.378 \| good	37.162 \| good	0.144 \| good	1.826 \| good	0.169 \| good
2026-08-16T15:00:00.000Z	41 \| good	6.52 \| good	29.298 \| good	43.667 \| good	0.222 \| good	0.973 \| good	0.169 \| good
2026-08-16T16:00:00.000Z	44 \| good	6.35 \| good	28.456 \| good	48.455 \| good	0.217 \| good	0.461 \| good	0.163 \| good
2026-08-16T17:00:00.000Z	45 \| good	6.397 \| good	28.606 \| good	48.66 \| good	0.18 \| good	0.333 \| good	0.154 \| good
2026-08-16T18:00:00.000Z	44 \| good	7.521 \| good	33.153 \| good	48.166 \| good	0.165 \| good	0.309 \| good	0.151 \| good

Spearfish

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Spearfish, South Dakota air quality map: Track AQI near you

0.14ppm

How accurate is South Dakota, USA air quality data?

Air quality data and pollutant measurements for South Dakota, 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 Spearfish, South Dakota updated?

The air quality for Spearfish, South Dakota is updated every hour.

When was the worst air quality at Spearfish, South Dakota in the last 24 hrs?

The worst air quality in Spearfish, South Dakota in the last 24 hours was observed at 03:00:00 on 2026-08-14.

When was the best air quality at Spearfish, South Dakota in the last 24 hrs?

In the last 24 hrs, the best air quality in Spearfish, South Dakota was observed at 03:00:00 on 2026-08-14.

What is the current air quality in Spearfish, South Dakota?

The current air quality in Spearfish, South Dakota is 52, categorized as Moderate based on real-time data.

What pollutant is the most common in Spearfish, South Dakota?

The most common pollutant in Spearfish, South Dakota is PM2.5.

What should I do if the air quality in Spearfish, South Dakota is poor?

If the air quality in Spearfish, South Dakota is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Spearfish, South Dakota?

The current PM_2.5 concentration at Spearfish, South Dakota is 10.013 μg/m³.

What is the current concentration of PM₁₀ in Spearfish, South Dakota?

The current PM₁₀ concentration at Spearfish, South Dakota is 44.647 μg/m³.

What is the current concentration of carbon monoxide (CO) in Spearfish, South Dakota?

The current carbon monoxide (CO) concentration at Spearfish, South Dakota is 0.151 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Spearfish, South Dakota?

The current sulfur dioxide (SO₂) concentration at Spearfish, South Dakota is 0.129 ppb.

What is the current concentration of ozone (O₃) in Spearfish, South Dakota?

The current ozone (O₃) concentration at Spearfish, South Dakota is 45.358 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Spearfish, South Dakota?

The current nitrogen dioxide (NO₂) concentration at Spearfish, South Dakota is 0.43 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-12T19:00:00.000Z	66 \| moderate	17.102 \| fine	75.929 \| fine	53.77 \| good	0.151 \| good	0.931 \| good	0.18 \| good
2026-08-12T20:00:00.000Z	60 \| moderate	13.885 \| fine	63 \| fine	53.885 \| good	0.208 \| good	1.513 \| good	0.204 \| good
2026-08-12T21:00:00.000Z	60 \| moderate	14.217 \| fine	63 \| fine	54.601 \| good	0.204 \| good	1.556 \| good	0.208 \| good
2026-08-12T22:00:00.000Z	62 \| moderate	14.935 \| fine	66.821 \| fine	54.314 \| good	0.22 \| good	1.709 \| good	0.22 \| good
2026-08-12T23:00:00.000Z	58 \| moderate	12.525 \| fine	57 \| fine	50.23 \| good	0.179 \| good	1.392 \| good	0.213 \| good
2026-08-13T00:00:00.000Z	66 \| moderate	16.786 \| fine	74.678 \| fine	50.887 \| good	0.075 \| good	1.31 \| good	0.193 \| good
2026-08-13T01:00:00.000Z	60 \| moderate	13.664 \| fine	61.384 \| fine	48.964 \| good	0.066 \| good	1.261 \| good	0.193 \| good
2026-08-13T02:00:00.000Z	56 \| moderate	12.24 \| fine	55.325 \| fine	46.915 \| good	0.062 \| good	1.36 \| good	0.193 \| good
2026-08-13T03:00:00.000Z	64 \| moderate	15.629 \| fine	69.929 \| fine	45.024 \| good	0.059 \| good	1.586 \| good	0.192 \| good
2026-08-13T04:00:00.000Z	60 \| moderate	13.554 \| fine	61.118 \| fine	43.903 \| good	0.058 \| good	1.604 \| good	0.19 \| good
2026-08-13T05:00:00.000Z	56 \| moderate	12.226 \| fine	55.028 \| fine	42.639 \| good	0.057 \| good	1.534 \| good	0.189 \| good
2026-08-13T06:00:00.000Z	58 \| moderate	12.754 \| fine	57.118 \| fine	41.668 \| good	0.058 \| good	1.598 \| good	0.19 \| good
2026-08-13T07:00:00.000Z	60 \| moderate	13.875 \| fine	62.047 \| fine	38.207 \| good	0.061 \| good	1.372 \| good	0.189 \| good
2026-08-13T08:00:00.000Z	56 \| moderate	11.881 \| good	52.929 \| good	35.975 \| good	0.062 \| good	1.365 \| good	0.188 \| good
2026-08-13T09:00:00.000Z	58 \| moderate	13.41 \| fine	60.616 \| fine	33.518 \| good	0.061 \| good	1.469 \| good	0.188 \| good
2026-08-13T10:00:00.000Z	62 \| moderate	15.131 \| fine	67.75 \| fine	35.362 \| good	0.06 \| good	1.322 \| good	0.187 \| good
2026-08-13T11:00:00.000Z	62 \| moderate	15.279 \| fine	67.929 \| fine	29.734 \| good	0.055 \| good	1.248 \| good	0.187 \| good
2026-08-13T12:00:00.000Z	60 \| moderate	13.579 \| fine	61 \| fine	29.552 \| good	0.059 \| good	1.958 \| good	0.191 \| good
2026-08-13T13:00:00.000Z	54 \| moderate	11.224 \| good	49.91 \| good	30.238 \| good	0.069 \| good	1.252 \| good	0.188 \| good
2026-08-13T14:00:00.000Z	60 \| moderate	13.722 \| fine	61.687 \| fine	34.173 \| good	0.077 \| good	1.058 \| good	0.19 \| good
2026-08-13T15:00:00.000Z	56 \| moderate	12.19 \| fine	54.941 \| good	41.021 \| good	0.082 \| good	0.965 \| good	0.193 \| good
2026-08-13T16:00:00.000Z	56 \| moderate	11.697 \| good	51.433 \| good	44.804 \| good	0.08 \| good	0.645 \| good	0.192 \| good
2026-08-13T17:00:00.000Z	58 \| moderate	12.617 \| fine	56.795 \| fine	45.528 \| good	0.077 \| good	0.476 \| good	0.191 \| good
2026-08-13T18:00:00.000Z	52 \| moderate	10.022 \| good	44.272 \| good	46.898 \| good	0.074 \| good	0.365 \| good	0.191 \| good
2026-08-13T19:00:00.000Z	58 \| moderate	13.299 \| fine	60.616 \| fine	45.577 \| good	0.079 \| good	0.328 \| good	0.193 \| good
2026-08-13T20:00:00.000Z	58 \| moderate	12.589 \| fine	56.616 \| fine	45.159 \| good	0.084 \| good	0.333 \| good	0.196 \| good
2026-08-13T21:00:00.000Z	56 \| moderate	11.813 \| good	52.495 \| good	44.721 \| good	0.087 \| good	0.353 \| good	0.198 \| good
2026-08-13T22:00:00.000Z	58 \| moderate	12.841 \| fine	58.616 \| fine	43.535 \| good	0.087 \| good	0.366 \| good	0.2 \| good
2026-08-13T23:00:00.000Z	62 \| moderate	15.366 \| fine	68.35 \| fine	43.631 \| good	0.081 \| good	0.4 \| good	0.202 \| good
2026-08-14T00:00:00.000Z	60 \| moderate	13.711 \| fine	61.687 \| fine	40.886 \| good	0.061 \| good	0.407 \| good	0.193 \| good
2026-08-14T01:00:00.000Z	54 \| moderate	10.758 \| good	47.477 \| good	39.389 \| good	0.065 \| good	0.558 \| good	0.194 \| good
2026-08-14T02:00:00.000Z	56 \| moderate	11.954 \| good	53.24 \| good	40.891 \| good	0.073 \| good	0.751 \| good	0.196 \| good
2026-08-14T03:00:00.000Z	66 \| moderate	17.028 \| fine	75.6 \| fine	40.863 \| good	0.08 \| good	0.971 \| good	0.196 \| good
2026-08-14T04:00:00.000Z	62 \| moderate	15.212 \| fine	68.498 \| fine	39.557 \| good	0.084 \| good	1.213 \| good	0.197 \| good
2026-08-14T05:00:00.000Z	62 \| moderate	14.655 \| fine	65 \| fine	36.789 \| good	0.088 \| good	1.441 \| good	0.197 \| good
2026-08-14T06:00:00.000Z	58 \| moderate	13.347 \| fine	59.866 \| fine	33.84 \| good	0.09 \| good	1.769 \| good	0.199 \| good
2026-08-14T07:00:00.000Z	60 \| moderate	13.579 \| fine	61 \| fine	33.55 \| good	0.093 \| good	2.061 \| good	0.2 \| good
2026-08-14T08:00:00.000Z	56 \| moderate	12.262 \| fine	55.51 \| fine	35.108 \| good	0.097 \| good	2.161 \| good	0.201 \| good
2026-08-14T09:00:00.000Z	56 \| moderate	12.334 \| fine	55.807 \| fine	35.398 \| good	0.095 \| good	2.309 \| good	0.202 \| good
2026-08-14T10:00:00.000Z	64 \| moderate	15.948 \| fine	70.616 \| fine	34.851 \| good	0.091 \| good	2.393 \| good	0.202 \| good
2026-08-14T11:00:00.000Z	60 \| moderate	13.576 \| fine	61 \| fine	28.892 \| good	0.089 \| good	2.367 \| good	0.201 \| good
2026-08-14T12:00:00.000Z	52 \| moderate	9.975 \| good	44.213 \| good	30.401 \| good	0.06 \| good	2.133 \| good	0.177 \| good
2026-08-14T13:00:00.000Z	49 \| good	9.027 \| good	39.838 \| good	34.511 \| good	0.055 \| good	1.928 \| good	0.172 \| good
2026-08-14T14:00:00.000Z	52 \| moderate	10.298 \| good	45.433 \| good	36.656 \| good	0.059 \| good	1.322 \| good	0.165 \| good
2026-08-14T15:00:00.000Z	49 \| good	8.964 \| good	39.646 \| good	40.178 \| good	0.078 \| good	0.888 \| good	0.159 \| good
2026-08-14T16:00:00.000Z	52 \| moderate	9.957 \| good	44.182 \| good	44.444 \| good	0.107 \| good	0.613 \| good	0.154 \| good
2026-08-14T17:00:00.000Z	52 \| moderate	10.013 \| good	44.647 \| good	45.358 \| good	0.129 \| good	0.43 \| good	0.151 \| good
2026-08-14T18:00:00.000Z	44 \| good	7.951 \| good	34.839 \| good	45.293 \| good	0.139 \| good	0.327 \| good	0.15 \| good
2026-08-14T18:00:00.000Z	52 \| moderate	10.013 \| good	44.647 \| good	45.358 \| good	0.129 \| good	0.43 \| good	0.151 \| good
2026-08-14T19:00:00.000Z	56 \| moderate	11.815 \| good	52.757 \| good	44.564 \| good	0.138 \| good	0.278 \| good	0.152 \| good
2026-08-14T20:00:00.000Z	44 \| good	8.115 \| good	35.845 \| good	45.172 \| good	0.129 \| good	0.255 \| good	0.152 \| good
2026-08-14T21:00:00.000Z	49 \| good	9.293 \| good	41.438 \| good	46.153 \| good	0.121 \| good	0.257 \| good	0.154 \| good
2026-08-14T22:00:00.000Z	52 \| moderate	9.683 \| good	43.013 \| good	47.347 \| good	0.116 \| good	0.303 \| good	0.156 \| good
2026-08-14T23:00:00.000Z	54 \| moderate	11.064 \| good	48.824 \| good	47.163 \| good	0.115 \| good	0.341 \| good	0.158 \| good
2026-08-15T00:00:00.000Z	62 \| moderate	14.865 \| fine	66.647 \| fine	43.013 \| good	0.117 \| good	0.477 \| good	0.161 \| good
2026-08-15T01:00:00.000Z	49 \| good	9.359 \| good	41.741 \| good	39.468 \| good	0.118 \| good	0.7 \| good	0.163 \| good
2026-08-15T02:00:00.000Z	49 \| good	9.321 \| good	41.708 \| good	40.47 \| good	0.111 \| good	1.525 \| good	0.166 \| good
2026-08-15T03:00:00.000Z	58 \| moderate	13.257 \| fine	59.592 \| fine	38.45 \| good	0.112 \| good	2.19 \| good	0.169 \| good
2026-08-15T04:00:00.000Z	60 \| moderate	14.42 \| fine	64.647 \| fine	35.94 \| good	0.117 \| good	2.282 \| good	0.172 \| good
2026-08-15T05:00:00.000Z	54 \| moderate	10.737 \| good	47.622 \| good	32.825 \| good	0.122 \| good	2.211 \| good	0.175 \| good
2026-08-15T06:00:00.000Z	56 \| moderate	12.33 \| fine	55.627 \| fine	34.316 \| good	0.124 \| good	2.107 \| good	0.178 \| good
2026-08-15T07:00:00.000Z	52 \| moderate	10.403 \| good	45.845 \| good	33.353 \| good	0.126 \| good	2.105 \| good	0.181 \| good
2026-08-15T08:00:00.000Z	54 \| moderate	11.321 \| good	49.864 \| good	32.309 \| good	0.127 \| good	2.198 \| good	0.183 \| good
2026-08-15T09:00:00.000Z	52 \| moderate	10.03 \| good	44.698 \| good	31.377 \| good	0.126 \| good	2.356 \| good	0.185 \| good
2026-08-15T10:00:00.000Z	52 \| moderate	10.171 \| good	44.845 \| good	30.322 \| good	0.123 \| good	2.49 \| good	0.186 \| good
2026-08-15T11:00:00.000Z	54 \| moderate	10.517 \| good	46.622 \| good	28.047 \| good	0.117 \| good	2.643 \| good	0.186 \| good
2026-08-15T12:00:00.000Z	44 \| good	7.852 \| good	34.317 \| good	29.538 \| good	0.107 \| good	2.672 \| good	0.183 \| good
2026-08-15T13:00:00.000Z	49 \| good	9.468 \| good	42.346 \| good	32.989 \| good	0.084 \| good	2.156 \| good	0.174 \| good
2026-08-15T14:00:00.000Z	49 \| good	9.066 \| good	40.082 \| good	35.659 \| good	0.065 \| good	1.001 \| good	0.167 \| good
2026-08-15T15:00:00.000Z	44 \| good	7.524 \| good	32.969 \| good	39.568 \| good	0.082 \| good	0.548 \| good	0.169 \| good
2026-08-15T16:00:00.000Z	39 \| good	5.162 \| good	22.159 \| good	42.403 \| good	0.132 \| good	0.416 \| good	0.171 \| good
2026-08-15T17:00:00.000Z	41 \| good	5.594 \| good	23.921 \| good	44.052 \| good	0.16 \| good	0.343 \| good	0.173 \| good
2026-08-15T18:00:00.000Z	40 \| good	5.888 \| good	25.701 \| good	42.822 \| good	0.178 \| good	0.276 \| good	0.171 \| good
2026-08-15T19:00:00.000Z	49 \| good	8.927 \| good	39.727 \| good	41.687 \| good	0.178 \| good	0.252 \| good	0.168 \| good
2026-08-15T20:00:00.000Z	49 \| good	9.058 \| good	40.433 \| good	40.629 \| good	0.19 \| good	0.262 \| good	0.169 \| good
2026-08-15T21:00:00.000Z	44 \| good	7.554 \| good	33.078 \| good	43.023 \| good	0.196 \| good	0.299 \| good	0.167 \| good
2026-08-15T22:00:00.000Z	44 \| good	7.701 \| good	33.896 \| good	45.829 \| good	0.205 \| good	0.277 \| good	0.167 \| good
2026-08-15T23:00:00.000Z	49 \| good	8.682 \| good	37.996 \| good	45.712 \| good	0.214 \| good	0.288 \| good	0.168 \| good
2026-08-16T00:00:00.000Z	56 \| moderate	12.222 \| fine	55.301 \| fine	44.646 \| good	0.222 \| good	0.328 \| good	0.169 \| good
2026-08-16T01:00:00.000Z	52 \| moderate	9.628 \| good	42.894 \| good	40.168 \| good	0.221 \| good	0.572 \| good	0.17 \| good
2026-08-16T02:00:00.000Z	44 \| good	7.866 \| good	34.431 \| good	38.008 \| good	0.219 \| good	1.392 \| good	0.172 \| good
2026-08-16T03:00:00.000Z	54 \| moderate	11.338 \| good	50.167 \| good	34.869 \| good	0.219 \| good	2.227 \| good	0.174 \| good
2026-08-16T04:00:00.000Z	62 \| moderate	14.91 \| fine	66.707 \| fine	32.18 \| good	0.223 \| good	2.513 \| good	0.174 \| good
2026-08-16T05:00:00.000Z	52 \| moderate	9.559 \| good	42.772 \| good	30.588 \| good	0.228 \| good	2.789 \| good	0.174 \| good
2026-08-16T06:00:00.000Z	49 \| good	8.897 \| good	39.05 \| good	30.712 \| good	0.223 \| good	3.174 \| good	0.174 \| good
2026-08-16T07:00:00.000Z	52 \| moderate	9.851 \| good	43.845 \| good	31.391 \| good	0.209 \| good	3.483 \| good	0.174 \| good
2026-08-16T08:00:00.000Z	52 \| moderate	9.871 \| good	43.872 \| good	30.215 \| good	0.186 \| good	3.686 \| good	0.174 \| good
2026-08-16T09:00:00.000Z	38 \| good	7.096 \| good	31.456 \| good	32.355 \| good	0.17 \| good	3.668 \| good	0.173 \| good
2026-08-16T10:00:00.000Z	44 \| good	8.088 \| good	35.337 \| good	34.212 \| good	0.154 \| good	3.61 \| good	0.171 \| good
2026-08-16T11:00:00.000Z	49 \| good	9.011 \| good	40.365 \| good	31.551 \| good	0.136 \| good	3.646 \| good	0.17 \| good
2026-08-16T12:00:00.000Z	38 \| good	6.834 \| good	30.431 \| good	30.921 \| good	0.125 \| good	3.516 \| good	0.169 \| good
2026-08-16T13:00:00.000Z	44 \| good	8.361 \| good	36.832 \| good	31.468 \| good	0.125 \| good	2.703 \| good	0.168 \| good
2026-08-16T14:00:00.000Z	38 \| good	7.039 \| good	31.378 \| good	37.162 \| good	0.144 \| good	1.826 \| good	0.169 \| good
2026-08-16T15:00:00.000Z	41 \| good	6.52 \| good	29.298 \| good	43.667 \| good	0.222 \| good	0.973 \| good	0.169 \| good
2026-08-16T16:00:00.000Z	44 \| good	6.35 \| good	28.456 \| good	48.455 \| good	0.217 \| good	0.461 \| good	0.163 \| good
2026-08-16T17:00:00.000Z	45 \| good	6.397 \| good	28.606 \| good	48.66 \| good	0.18 \| good	0.333 \| good	0.154 \| good
2026-08-16T18:00:00.000Z	44 \| good	7.521 \| good	33.153 \| good	48.166 \| good	0.165 \| good	0.309 \| good	0.151 \| good

Spearfish, South Dakota live air quality index now

Major air pollutants in Spearfish, South Dakota

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Spearfish, South Dakota air quality map: Track AQI near you

Air quality in nearby cities

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Dickinson, North Dakota

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Frequently asked questions

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What is the current concentration of PM2.5 in Spearfish, South Dakota?

What is the current concentration of PM10 in Spearfish, South Dakota?

What is the current concentration of carbon monoxide (CO) in Spearfish, South Dakota?

What is the current concentration of sulfur dioxide (SO2) in Spearfish, South Dakota?

What is the current concentration of ozone (O3) in Spearfish, South Dakota?

What is the current concentration of nitrogen dioxide (NO2) in Spearfish, South Dakota?

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 Spearfish, South Dakota?

What is the current concentration of PM₁₀ in Spearfish, South Dakota?

What is the current concentration of sulfur dioxide (SO₂) in Spearfish, South Dakota?

What is the current concentration of ozone (O₃) in Spearfish, South Dakota?

What is the current concentration of nitrogen dioxide (NO₂) in Spearfish, South Dakota?