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

The current PM10 concentration at Spearfish, South Dakota is 46.306 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 0.134 ppb.

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

The current ozone (O3) concentration at Spearfish, South Dakota is 25.55 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 3.522 ppb.

Spearfish, South Dakota live air quality index now

Name: Live air pollution levels in Spearfish, South Dakota today
Creator: Ambee

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)

10.42 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

46.31 μg/m³

155

255

425

605+

Ozone (O₃)

25.55 ppb

201

201+

Sulfur Dioxide (SO₂)

0.13 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.52 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.14 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

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
2025-09-04T07:00:00.000Z	58 \| moderate	13.261 \| fine	59.866 \| fine	25.385 \| good	0.18 \| good	4.893 \| good	0.234 \| good
2025-09-04T08:00:00.000Z	60 \| moderate	13.994 \| fine	62.455 \| fine	23.901 \| good	0.18 \| good	4.134 \| good	0.227 \| good
2025-09-04T09:00:00.000Z	62 \| moderate	15.022 \| fine	66.882 \| fine	23.807 \| good	0.181 \| good	3.376 \| good	0.22 \| good
2025-09-04T10:00:00.000Z	62 \| moderate	14.83 \| fine	65.687 \| fine	25.661 \| good	0.191 \| good	2.912 \| good	0.207 \| good
2025-09-04T11:00:00.000Z	66 \| moderate	16.761 \| fine	73.866 \| fine	26.265 \| good	0.18 \| good	2.513 \| good	0.203 \| good
2025-09-04T12:00:00.000Z	67 \| moderate	18.243 \| fine	81 \| fine	28.174 \| good	0.19 \| good	2.081 \| good	0.198 \| good
2025-09-04T13:00:00.000Z	66 \| moderate	17.427 \| fine	77 \| fine	29.242 \| good	0.3 \| good	1.738 \| good	0.194 \| good
2025-09-04T14:00:00.000Z	81 \| moderate	24.842 \| fine	108.25 \| fine	34.812 \| good	0.41 \| good	1.37 \| good	0.19 \| good
2025-09-04T15:00:00.000Z	86 \| moderate	28.167 \| fine	123 \| fine	39.215 \| good	0.52 \| good	1.014 \| good	0.186 \| good
2025-09-04T16:00:00.000Z	84 \| moderate	27.026 \| fine	117.687 \| fine	40.614 \| good	0.539 \| good	0.772 \| good	0.197 \| good
2025-09-04T17:00:00.000Z	66 \| moderate	17.289 \| fine	76.938 \| fine	37.011 \| good	0.557 \| good	0.53 \| good	0.208 \| good
2025-09-04T18:00:00.000Z	62 \| moderate	14.636 \| fine	65.569 \| fine	38.018 \| good	0.576 \| good	0.287 \| good	0.219 \| good
2025-09-04T19:00:00.000Z	64 \| moderate	15.589 \| fine	69.687 \| fine	37.574 \| good	0.467 \| good	0.265 \| good	0.213 \| good
2025-09-04T20:00:00.000Z	64 \| moderate	15.954 \| fine	70.821 \| fine	40.225 \| good	0.358 \| good	0.242 \| good	0.206 \| good
2025-09-04T21:00:00.000Z	64 \| moderate	15.948 \| fine	71 \| fine	43.111 \| good	0.249 \| good	0.22 \| good	0.2 \| good
2025-09-04T22:00:00.000Z	66 \| moderate	17.077 \| fine	76.616 \| fine	42.698 \| good	0.212 \| good	0.251 \| good	0.187 \| good
2025-09-04T23:00:00.000Z	64 \| moderate	15.725 \| fine	70.498 \| fine	42.002 \| good	0.16 \| good	0.278 \| good	0.163 \| good
2025-09-05T00:00:00.000Z	56 \| moderate	12.255 \| fine	55 \| fine	41.186 \| good	0.132 \| good	0.316 \| good	0.152 \| good
2025-09-05T01:00:00.000Z	54 \| moderate	11.494 \| good	50.941 \| good	39.726 \| good	0.152 \| good	0.426 \| good	0.153 \| good
2025-09-05T02:00:00.000Z	62 \| moderate	15.493 \| fine	68.616 \| fine	37.445 \| good	0.172 \| good	0.536 \| good	0.153 \| good
2025-09-05T03:00:00.000Z	62 \| moderate	15.009 \| fine	67.303 \| fine	34.784 \| good	0.192 \| good	0.646 \| good	0.153 \| good
2025-09-05T04:00:00.000Z	64 \| moderate	15.88 \| fine	70.616 \| fine	30.813 \| good	0.214 \| good	0.67 \| good	0.154 \| good
2025-09-05T05:00:00.000Z	67 \| moderate	17.737 \| fine	78.232 \| fine	29.867 \| good	0.237 \| good	0.694 \| good	0.155 \| good
2025-09-05T06:00:00.000Z	66 \| moderate	17.426 \| fine	77.91 \| fine	29.983 \| good	0.259 \| good	0.718 \| good	0.156 \| good
2025-09-05T07:00:00.000Z	60 \| moderate	13.929 \| fine	62.374 \| fine	31.238 \| good	0.242 \| good	0.762 \| good	0.155 \| good
2025-09-05T08:00:00.000Z	58 \| moderate	12.859 \| fine	57.687 \| fine	30.641 \| good	0.225 \| good	0.806 \| good	0.154 \| good
2025-09-05T09:00:00.000Z	54 \| moderate	10.566 \| good	46.748 \| good	26.178 \| good	0.209 \| good	0.85 \| good	0.153 \| good
2025-09-05T10:00:00.000Z	56 \| moderate	12.34 \| fine	55.628 \| fine	25.259 \| good	0.199 \| good	0.877 \| good	0.151 \| good
2025-09-05T11:00:00.000Z	58 \| moderate	12.865 \| fine	57.569 \| fine	24.993 \| good	0.237 \| good	0.99 \| good	0.157 \| good
2025-09-05T12:00:00.000Z	54 \| moderate	11.315 \| good	50.285 \| good	19.899 \| good	0.225 \| good	1.08 \| good	0.155 \| good
2025-09-05T13:00:00.000Z	52 \| moderate	9.866 \| good	43.718 \| good	21.089 \| good	0.225 \| good	0.856 \| good	0.148 \| good
2025-09-05T14:00:00.000Z	49 \| good	9.083 \| good	40.821 \| good	24.365 \| good	0.225 \| good	0.632 \| good	0.14 \| good
2025-09-05T15:00:00.000Z	52 \| moderate	9.912 \| good	44.375 \| good	26.947 \| good	0.225 \| good	0.408 \| good	0.132 \| good
2025-09-05T16:00:00.000Z	44 \| good	8.42 \| good	36.91 \| good	28.902 \| good	0.197 \| good	0.335 \| good	0.129 \| good
2025-09-05T17:00:00.000Z	49 \| good	8.86 \| good	38.808 \| good	31.157 \| good	0.169 \| good	0.261 \| good	0.125 \| good
2025-09-05T18:00:00.000Z	49 \| good	8.589 \| good	37.718 \| good	32.245 \| good	0.141 \| good	0.188 \| good	0.121 \| good
2025-09-05T19:00:00.000Z	49 \| good	8.681 \| good	37.867 \| good	31.774 \| good	0.134 \| good	0.181 \| good	0.118 \| good
2025-09-05T20:00:00.000Z	52 \| moderate	10.332 \| good	45.867 \| good	33.513 \| good	0.126 \| good	0.174 \| good	0.115 \| good
2025-09-05T21:00:00.000Z	52 \| moderate	9.542 \| good	42.718 \| good	34.547 \| good	0.119 \| good	0.167 \| good	0.112 \| good
2025-09-05T22:00:00.000Z	52 \| moderate	10.349 \| good	45.777 \| good	34.956 \| good	0.12 \| good	0.216 \| good	0.111 \| good
2025-09-05T23:00:00.000Z	49 \| good	9.044 \| good	40.616 \| good	33.707 \| good	0.122 \| good	0.265 \| good	0.114 \| good
2025-09-06T00:00:00.000Z	44 \| good	8.483 \| good	37.241 \| good	34.563 \| good	0.132 \| good	0.316 \| good	0.113 \| good
2025-09-06T01:00:00.000Z	49 \| good	8.636 \| good	38.093 \| good	31.289 \| good	0.13 \| good	1.13 \| good	0.12 \| good
2025-09-06T02:00:00.000Z	54 \| moderate	11.461 \| good	50.514 \| good	29.467 \| good	0.129 \| good	1.944 \| good	0.126 \| good
2025-09-06T03:00:00.000Z	52 \| moderate	10.268 \| good	45.423 \| good	26.706 \| good	0.128 \| good	2.758 \| good	0.132 \| good
2025-09-06T04:00:00.000Z	54 \| moderate	10.835 \| good	47.959 \| good	26.433 \| good	0.131 \| good	3.14 \| good	0.134 \| good
2025-09-06T05:00:00.000Z	52 \| moderate	10.42 \| good	46.306 \| good	25.55 \| good	0.134 \| good	3.522 \| good	0.137 \| good
2025-09-06T06:00:00.000Z	52 \| moderate	10.42 \| good	46.306 \| good	25.55 \| good	0.134 \| good	3.522 \| good	0.137 \| good
2025-09-06T03:00:00.000Z	52 \| moderate	9.796 \| good	43.67 \| good	26.555 \| good	0.124 \| good	2.971 \| good	0.129 \| good
2025-09-06T04:00:00.000Z	54 \| moderate	10.646 \| good	47.419 \| good	25.571 \| good	0.127 \| good	3.358 \| good	0.132 \| good
2025-09-06T05:00:00.000Z	54 \| moderate	10.646 \| good	47.449 \| good	23.984 \| good	0.131 \| good	3.745 \| good	0.135 \| good
2025-09-06T06:00:00.000Z	54 \| moderate	10.516 \| good	46.687 \| good	24.308 \| good	0.134 \| good	4.132 \| good	0.137 \| good
2025-09-06T07:00:00.000Z	52 \| moderate	10.129 \| good	44.9 \| good	25.802 \| good	0.131 \| good	4.188 \| good	0.137 \| good
2025-09-06T08:00:00.000Z	54 \| moderate	10.566 \| good	47.039 \| good	26.763 \| good	0.129 \| good	4.243 \| good	0.137 \| good
2025-09-06T09:00:00.000Z	49 \| good	8.674 \| good	38.257 \| good	25.976 \| good	0.126 \| good	4.299 \| good	0.137 \| good
2025-09-06T10:00:00.000Z	52 \| moderate	9.859 \| good	43.797 \| good	25.96 \| good	0.121 \| good	4.203 \| good	0.135 \| good
2025-09-06T11:00:00.000Z	49 \| good	8.994 \| good	39.741 \| good	26.771 \| good	0.117 \| good	4.107 \| good	0.133 \| good
2025-09-06T12:00:00.000Z	49 \| good	8.763 \| good	38.484 \| good	23.968 \| good	0.113 \| good	4.012 \| good	0.131 \| good
2025-09-06T13:00:00.000Z	38 \| good	7.151 \| good	31.382 \| good	22.523 \| good	0.146 \| good	3.034 \| good	0.128 \| good
2025-09-06T14:00:00.000Z	44 \| good	8.141 \| good	35.87 \| good	25.094 \| good	0.179 \| good	2.056 \| good	0.125 \| good
2025-09-06T15:00:00.000Z	44 \| good	8.443 \| good	37.034 \| good	28.987 \| good	0.212 \| good	1.078 \| good	0.121 \| good
2025-09-06T16:00:00.000Z	38 \| good	6.618 \| good	29.417 \| good	30.851 \| good	0.217 \| good	0.82 \| good	0.119 \| good
2025-09-06T17:00:00.000Z	38 \| good	7.372 \| good	32.385 \| good	32.437 \| good	0.221 \| good	0.561 \| good	0.117 \| good
2025-09-06T18:00:00.000Z	38 \| good	6.786 \| good	29.999 \| good	35.639 \| good	0.226 \| good	0.303 \| good	0.114 \| good
2025-09-06T19:00:00.000Z	38 \| good	6.513 \| good	29.308 \| good	38.256 \| good	0.214 \| good	0.293 \| good	0.114 \| good
2025-09-06T20:00:00.000Z	49 \| good	8.956 \| good	39.616 \| good	40.849 \| good	0.202 \| good	0.283 \| good	0.114 \| good
2025-09-06T21:00:00.000Z	52 \| moderate	10.036 \| good	44.77 \| good	41.291 \| good	0.19 \| good	0.273 \| good	0.114 \| good
2025-09-06T22:00:00.000Z	52 \| moderate	9.958 \| good	44.529 \| good	40.987 \| good	0.187 \| good	0.347 \| good	0.114 \| good
2025-09-06T23:00:00.000Z	49 \| good	9.419 \| good	41.868 \| good	40.979 \| good	0.184 \| good	0.421 \| good	0.115 \| good
2025-09-07T00:00:00.000Z	52 \| moderate	9.831 \| good	43.652 \| good	39.02 \| good	0.181 \| good	0.495 \| good	0.115 \| good
2025-09-07T01:00:00.000Z	52 \| moderate	10.457 \| good	46.481 \| good	34.21 \| good	0.18 \| good	1.255 \| good	0.122 \| good
2025-09-07T02:00:00.000Z	60 \| moderate	13.829 \| fine	62.443 \| fine	31.923 \| good	0.178 \| good	2.014 \| good	0.128 \| good
2025-09-07T03:00:00.000Z	56 \| moderate	11.601 \| good	51.321 \| good	31.731 \| good	0.177 \| good	2.774 \| good	0.134 \| good
2025-09-07T04:00:00.000Z	58 \| moderate	12.718 \| fine	56.881 \| fine	29.076 \| good	0.178 \| good	2.914 \| good	0.135 \| good
2025-09-07T05:00:00.000Z	56 \| moderate	12.464 \| fine	56.268 \| fine	26.377 \| good	0.18 \| good	3.053 \| good	0.137 \| good
2025-09-07T06:00:00.000Z	54 \| moderate	10.867 \| good	48.408 \| good	29.173 \| good	0.181 \| good	3.193 \| good	0.138 \| good
2025-09-07T07:00:00.000Z	54 \| moderate	10.985 \| good	48.694 \| good	31.365 \| good	0.175 \| good	2.952 \| good	0.135 \| good
2025-09-07T08:00:00.000Z	49 \| good	9.421 \| good	41.881 \| good	31.822 \| good	0.169 \| good	2.71 \| good	0.132 \| good
2025-09-07T09:00:00.000Z	52 \| moderate	9.564 \| good	42.415 \| good	31.129 \| good	0.163 \| good	2.469 \| good	0.13 \| good
2025-09-07T10:00:00.000Z	52 \| moderate	9.556 \| good	42.41 \| good	31.866 \| good	0.159 \| good	2.319 \| good	0.129 \| good
2025-09-07T11:00:00.000Z	49 \| good	9.262 \| good	41.304 \| good	30.658 \| good	0.155 \| good	2.17 \| good	0.128 \| good
2025-09-07T12:00:00.000Z	52 \| moderate	9.806 \| good	43.43 \| good	31.377 \| good	0.152 \| good	2.02 \| good	0.127 \| good
2025-09-07T13:00:00.000Z	52 \| moderate	10.284 \| good	45.594 \| good	28.238 \| good	0.154 \| good	1.937 \| good	0.136 \| good
2025-09-07T14:00:00.000Z	56 \| moderate	11.812 \| good	52.642 \| good	29.133 \| good	0.155 \| good	1.854 \| good	0.145 \| good
2025-09-07T15:00:00.000Z	58 \| moderate	12.515 \| fine	56.102 \| fine	35.072 \| good	0.157 \| good	1.771 \| good	0.154 \| good
2025-09-07T16:00:00.000Z	54 \| moderate	10.981 \| good	48.504 \| good	38.34 \| good	0.19 \| good	1.352 \| good	0.156 \| good
2025-09-07T17:00:00.000Z	52 \| moderate	10.072 \| good	44.614 \| good	40.875 \| good	0.223 \| good	0.934 \| good	0.157 \| good
2025-09-07T18:00:00.000Z	56 \| moderate	12.031 \| good	53.982 \| good	43.074 \| good	0.256 \| good	0.515 \| good	0.159 \| good
2025-09-07T19:00:00.000Z	58 \| moderate	12.703 \| fine	57.07 \| fine	45.377 \| good	0.247 \| good	0.475 \| good	0.159 \| good
2025-09-07T20:00:00.000Z	56 \| moderate	12.393 \| fine	56.105 \| fine	46.682 \| good	0.239 \| good	0.435 \| good	0.158 \| good
2025-09-07T21:00:00.000Z	58 \| moderate	13.171 \| fine	59.991 \| fine	45.68 \| good	0.231 \| good	0.395 \| good	0.158 \| good
2025-09-07T22:00:00.000Z	58 \| moderate	13.088 \| fine	58.474 \| fine	44.744 \| good	0.213 \| good	0.64 \| good	0.161 \| good
2025-09-07T23:00:00.000Z	58 \| moderate	12.694 \| fine	56.952 \| fine	45.956 \| good	0.195 \| good	0.884 \| good	0.164 \| good
2025-09-08T00:00:00.000Z	56 \| moderate	12.376 \| fine	12.856 \| good	49.295 \| good	0.178 \| good	1.14 \| good	0.167 \| good
2025-09-08T01:00:00.000Z	58 \| moderate	13.441 \| fine	60.703 \| fine	39.842 \| good	0.168 \| good	2.357 \| good	0.18 \| good
2025-09-08T02:00:00.000Z	60 \| moderate	13.675 \| fine	61.63 \| fine	34.846 \| good	0.158 \| good	3.586 \| good	0.192 \| good

Spearfish

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

0.29ppm

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 06:00:00 on 2025-09-05.

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 12:00:00 on 2025-09-06.

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 10.42 μg/m³.

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

The current PM₁₀ concentration at Spearfish, South Dakota is 46.306 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 0.137 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 0.134 ppb.

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

The current ozone (O₃) concentration at Spearfish, South Dakota is 25.55 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 3.522 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-04T07:00:00.000Z	58 \| moderate	13.261 \| fine	59.866 \| fine	25.385 \| good	0.18 \| good	4.893 \| good	0.234 \| good
2025-09-04T08:00:00.000Z	60 \| moderate	13.994 \| fine	62.455 \| fine	23.901 \| good	0.18 \| good	4.134 \| good	0.227 \| good
2025-09-04T09:00:00.000Z	62 \| moderate	15.022 \| fine	66.882 \| fine	23.807 \| good	0.181 \| good	3.376 \| good	0.22 \| good
2025-09-04T10:00:00.000Z	62 \| moderate	14.83 \| fine	65.687 \| fine	25.661 \| good	0.191 \| good	2.912 \| good	0.207 \| good
2025-09-04T11:00:00.000Z	66 \| moderate	16.761 \| fine	73.866 \| fine	26.265 \| good	0.18 \| good	2.513 \| good	0.203 \| good
2025-09-04T12:00:00.000Z	67 \| moderate	18.243 \| fine	81 \| fine	28.174 \| good	0.19 \| good	2.081 \| good	0.198 \| good
2025-09-04T13:00:00.000Z	66 \| moderate	17.427 \| fine	77 \| fine	29.242 \| good	0.3 \| good	1.738 \| good	0.194 \| good
2025-09-04T14:00:00.000Z	81 \| moderate	24.842 \| fine	108.25 \| fine	34.812 \| good	0.41 \| good	1.37 \| good	0.19 \| good
2025-09-04T15:00:00.000Z	86 \| moderate	28.167 \| fine	123 \| fine	39.215 \| good	0.52 \| good	1.014 \| good	0.186 \| good
2025-09-04T16:00:00.000Z	84 \| moderate	27.026 \| fine	117.687 \| fine	40.614 \| good	0.539 \| good	0.772 \| good	0.197 \| good
2025-09-04T17:00:00.000Z	66 \| moderate	17.289 \| fine	76.938 \| fine	37.011 \| good	0.557 \| good	0.53 \| good	0.208 \| good
2025-09-04T18:00:00.000Z	62 \| moderate	14.636 \| fine	65.569 \| fine	38.018 \| good	0.576 \| good	0.287 \| good	0.219 \| good
2025-09-04T19:00:00.000Z	64 \| moderate	15.589 \| fine	69.687 \| fine	37.574 \| good	0.467 \| good	0.265 \| good	0.213 \| good
2025-09-04T20:00:00.000Z	64 \| moderate	15.954 \| fine	70.821 \| fine	40.225 \| good	0.358 \| good	0.242 \| good	0.206 \| good
2025-09-04T21:00:00.000Z	64 \| moderate	15.948 \| fine	71 \| fine	43.111 \| good	0.249 \| good	0.22 \| good	0.2 \| good
2025-09-04T22:00:00.000Z	66 \| moderate	17.077 \| fine	76.616 \| fine	42.698 \| good	0.212 \| good	0.251 \| good	0.187 \| good
2025-09-04T23:00:00.000Z	64 \| moderate	15.725 \| fine	70.498 \| fine	42.002 \| good	0.16 \| good	0.278 \| good	0.163 \| good
2025-09-05T00:00:00.000Z	56 \| moderate	12.255 \| fine	55 \| fine	41.186 \| good	0.132 \| good	0.316 \| good	0.152 \| good
2025-09-05T01:00:00.000Z	54 \| moderate	11.494 \| good	50.941 \| good	39.726 \| good	0.152 \| good	0.426 \| good	0.153 \| good
2025-09-05T02:00:00.000Z	62 \| moderate	15.493 \| fine	68.616 \| fine	37.445 \| good	0.172 \| good	0.536 \| good	0.153 \| good
2025-09-05T03:00:00.000Z	62 \| moderate	15.009 \| fine	67.303 \| fine	34.784 \| good	0.192 \| good	0.646 \| good	0.153 \| good
2025-09-05T04:00:00.000Z	64 \| moderate	15.88 \| fine	70.616 \| fine	30.813 \| good	0.214 \| good	0.67 \| good	0.154 \| good
2025-09-05T05:00:00.000Z	67 \| moderate	17.737 \| fine	78.232 \| fine	29.867 \| good	0.237 \| good	0.694 \| good	0.155 \| good
2025-09-05T06:00:00.000Z	66 \| moderate	17.426 \| fine	77.91 \| fine	29.983 \| good	0.259 \| good	0.718 \| good	0.156 \| good
2025-09-05T07:00:00.000Z	60 \| moderate	13.929 \| fine	62.374 \| fine	31.238 \| good	0.242 \| good	0.762 \| good	0.155 \| good
2025-09-05T08:00:00.000Z	58 \| moderate	12.859 \| fine	57.687 \| fine	30.641 \| good	0.225 \| good	0.806 \| good	0.154 \| good
2025-09-05T09:00:00.000Z	54 \| moderate	10.566 \| good	46.748 \| good	26.178 \| good	0.209 \| good	0.85 \| good	0.153 \| good
2025-09-05T10:00:00.000Z	56 \| moderate	12.34 \| fine	55.628 \| fine	25.259 \| good	0.199 \| good	0.877 \| good	0.151 \| good
2025-09-05T11:00:00.000Z	58 \| moderate	12.865 \| fine	57.569 \| fine	24.993 \| good	0.237 \| good	0.99 \| good	0.157 \| good
2025-09-05T12:00:00.000Z	54 \| moderate	11.315 \| good	50.285 \| good	19.899 \| good	0.225 \| good	1.08 \| good	0.155 \| good
2025-09-05T13:00:00.000Z	52 \| moderate	9.866 \| good	43.718 \| good	21.089 \| good	0.225 \| good	0.856 \| good	0.148 \| good
2025-09-05T14:00:00.000Z	49 \| good	9.083 \| good	40.821 \| good	24.365 \| good	0.225 \| good	0.632 \| good	0.14 \| good
2025-09-05T15:00:00.000Z	52 \| moderate	9.912 \| good	44.375 \| good	26.947 \| good	0.225 \| good	0.408 \| good	0.132 \| good
2025-09-05T16:00:00.000Z	44 \| good	8.42 \| good	36.91 \| good	28.902 \| good	0.197 \| good	0.335 \| good	0.129 \| good
2025-09-05T17:00:00.000Z	49 \| good	8.86 \| good	38.808 \| good	31.157 \| good	0.169 \| good	0.261 \| good	0.125 \| good
2025-09-05T18:00:00.000Z	49 \| good	8.589 \| good	37.718 \| good	32.245 \| good	0.141 \| good	0.188 \| good	0.121 \| good
2025-09-05T19:00:00.000Z	49 \| good	8.681 \| good	37.867 \| good	31.774 \| good	0.134 \| good	0.181 \| good	0.118 \| good
2025-09-05T20:00:00.000Z	52 \| moderate	10.332 \| good	45.867 \| good	33.513 \| good	0.126 \| good	0.174 \| good	0.115 \| good
2025-09-05T21:00:00.000Z	52 \| moderate	9.542 \| good	42.718 \| good	34.547 \| good	0.119 \| good	0.167 \| good	0.112 \| good
2025-09-05T22:00:00.000Z	52 \| moderate	10.349 \| good	45.777 \| good	34.956 \| good	0.12 \| good	0.216 \| good	0.111 \| good
2025-09-05T23:00:00.000Z	49 \| good	9.044 \| good	40.616 \| good	33.707 \| good	0.122 \| good	0.265 \| good	0.114 \| good
2025-09-06T00:00:00.000Z	44 \| good	8.483 \| good	37.241 \| good	34.563 \| good	0.132 \| good	0.316 \| good	0.113 \| good
2025-09-06T01:00:00.000Z	49 \| good	8.636 \| good	38.093 \| good	31.289 \| good	0.13 \| good	1.13 \| good	0.12 \| good
2025-09-06T02:00:00.000Z	54 \| moderate	11.461 \| good	50.514 \| good	29.467 \| good	0.129 \| good	1.944 \| good	0.126 \| good
2025-09-06T03:00:00.000Z	52 \| moderate	10.268 \| good	45.423 \| good	26.706 \| good	0.128 \| good	2.758 \| good	0.132 \| good
2025-09-06T04:00:00.000Z	54 \| moderate	10.835 \| good	47.959 \| good	26.433 \| good	0.131 \| good	3.14 \| good	0.134 \| good
2025-09-06T05:00:00.000Z	52 \| moderate	10.42 \| good	46.306 \| good	25.55 \| good	0.134 \| good	3.522 \| good	0.137 \| good
2025-09-06T06:00:00.000Z	52 \| moderate	10.42 \| good	46.306 \| good	25.55 \| good	0.134 \| good	3.522 \| good	0.137 \| good
2025-09-06T03:00:00.000Z	52 \| moderate	9.796 \| good	43.67 \| good	26.555 \| good	0.124 \| good	2.971 \| good	0.129 \| good
2025-09-06T04:00:00.000Z	54 \| moderate	10.646 \| good	47.419 \| good	25.571 \| good	0.127 \| good	3.358 \| good	0.132 \| good
2025-09-06T05:00:00.000Z	54 \| moderate	10.646 \| good	47.449 \| good	23.984 \| good	0.131 \| good	3.745 \| good	0.135 \| good
2025-09-06T06:00:00.000Z	54 \| moderate	10.516 \| good	46.687 \| good	24.308 \| good	0.134 \| good	4.132 \| good	0.137 \| good
2025-09-06T07:00:00.000Z	52 \| moderate	10.129 \| good	44.9 \| good	25.802 \| good	0.131 \| good	4.188 \| good	0.137 \| good
2025-09-06T08:00:00.000Z	54 \| moderate	10.566 \| good	47.039 \| good	26.763 \| good	0.129 \| good	4.243 \| good	0.137 \| good
2025-09-06T09:00:00.000Z	49 \| good	8.674 \| good	38.257 \| good	25.976 \| good	0.126 \| good	4.299 \| good	0.137 \| good
2025-09-06T10:00:00.000Z	52 \| moderate	9.859 \| good	43.797 \| good	25.96 \| good	0.121 \| good	4.203 \| good	0.135 \| good
2025-09-06T11:00:00.000Z	49 \| good	8.994 \| good	39.741 \| good	26.771 \| good	0.117 \| good	4.107 \| good	0.133 \| good
2025-09-06T12:00:00.000Z	49 \| good	8.763 \| good	38.484 \| good	23.968 \| good	0.113 \| good	4.012 \| good	0.131 \| good
2025-09-06T13:00:00.000Z	38 \| good	7.151 \| good	31.382 \| good	22.523 \| good	0.146 \| good	3.034 \| good	0.128 \| good
2025-09-06T14:00:00.000Z	44 \| good	8.141 \| good	35.87 \| good	25.094 \| good	0.179 \| good	2.056 \| good	0.125 \| good
2025-09-06T15:00:00.000Z	44 \| good	8.443 \| good	37.034 \| good	28.987 \| good	0.212 \| good	1.078 \| good	0.121 \| good
2025-09-06T16:00:00.000Z	38 \| good	6.618 \| good	29.417 \| good	30.851 \| good	0.217 \| good	0.82 \| good	0.119 \| good
2025-09-06T17:00:00.000Z	38 \| good	7.372 \| good	32.385 \| good	32.437 \| good	0.221 \| good	0.561 \| good	0.117 \| good
2025-09-06T18:00:00.000Z	38 \| good	6.786 \| good	29.999 \| good	35.639 \| good	0.226 \| good	0.303 \| good	0.114 \| good
2025-09-06T19:00:00.000Z	38 \| good	6.513 \| good	29.308 \| good	38.256 \| good	0.214 \| good	0.293 \| good	0.114 \| good
2025-09-06T20:00:00.000Z	49 \| good	8.956 \| good	39.616 \| good	40.849 \| good	0.202 \| good	0.283 \| good	0.114 \| good
2025-09-06T21:00:00.000Z	52 \| moderate	10.036 \| good	44.77 \| good	41.291 \| good	0.19 \| good	0.273 \| good	0.114 \| good
2025-09-06T22:00:00.000Z	52 \| moderate	9.958 \| good	44.529 \| good	40.987 \| good	0.187 \| good	0.347 \| good	0.114 \| good
2025-09-06T23:00:00.000Z	49 \| good	9.419 \| good	41.868 \| good	40.979 \| good	0.184 \| good	0.421 \| good	0.115 \| good
2025-09-07T00:00:00.000Z	52 \| moderate	9.831 \| good	43.652 \| good	39.02 \| good	0.181 \| good	0.495 \| good	0.115 \| good
2025-09-07T01:00:00.000Z	52 \| moderate	10.457 \| good	46.481 \| good	34.21 \| good	0.18 \| good	1.255 \| good	0.122 \| good
2025-09-07T02:00:00.000Z	60 \| moderate	13.829 \| fine	62.443 \| fine	31.923 \| good	0.178 \| good	2.014 \| good	0.128 \| good
2025-09-07T03:00:00.000Z	56 \| moderate	11.601 \| good	51.321 \| good	31.731 \| good	0.177 \| good	2.774 \| good	0.134 \| good
2025-09-07T04:00:00.000Z	58 \| moderate	12.718 \| fine	56.881 \| fine	29.076 \| good	0.178 \| good	2.914 \| good	0.135 \| good
2025-09-07T05:00:00.000Z	56 \| moderate	12.464 \| fine	56.268 \| fine	26.377 \| good	0.18 \| good	3.053 \| good	0.137 \| good
2025-09-07T06:00:00.000Z	54 \| moderate	10.867 \| good	48.408 \| good	29.173 \| good	0.181 \| good	3.193 \| good	0.138 \| good
2025-09-07T07:00:00.000Z	54 \| moderate	10.985 \| good	48.694 \| good	31.365 \| good	0.175 \| good	2.952 \| good	0.135 \| good
2025-09-07T08:00:00.000Z	49 \| good	9.421 \| good	41.881 \| good	31.822 \| good	0.169 \| good	2.71 \| good	0.132 \| good
2025-09-07T09:00:00.000Z	52 \| moderate	9.564 \| good	42.415 \| good	31.129 \| good	0.163 \| good	2.469 \| good	0.13 \| good
2025-09-07T10:00:00.000Z	52 \| moderate	9.556 \| good	42.41 \| good	31.866 \| good	0.159 \| good	2.319 \| good	0.129 \| good
2025-09-07T11:00:00.000Z	49 \| good	9.262 \| good	41.304 \| good	30.658 \| good	0.155 \| good	2.17 \| good	0.128 \| good
2025-09-07T12:00:00.000Z	52 \| moderate	9.806 \| good	43.43 \| good	31.377 \| good	0.152 \| good	2.02 \| good	0.127 \| good
2025-09-07T13:00:00.000Z	52 \| moderate	10.284 \| good	45.594 \| good	28.238 \| good	0.154 \| good	1.937 \| good	0.136 \| good
2025-09-07T14:00:00.000Z	56 \| moderate	11.812 \| good	52.642 \| good	29.133 \| good	0.155 \| good	1.854 \| good	0.145 \| good
2025-09-07T15:00:00.000Z	58 \| moderate	12.515 \| fine	56.102 \| fine	35.072 \| good	0.157 \| good	1.771 \| good	0.154 \| good
2025-09-07T16:00:00.000Z	54 \| moderate	10.981 \| good	48.504 \| good	38.34 \| good	0.19 \| good	1.352 \| good	0.156 \| good
2025-09-07T17:00:00.000Z	52 \| moderate	10.072 \| good	44.614 \| good	40.875 \| good	0.223 \| good	0.934 \| good	0.157 \| good
2025-09-07T18:00:00.000Z	56 \| moderate	12.031 \| good	53.982 \| good	43.074 \| good	0.256 \| good	0.515 \| good	0.159 \| good
2025-09-07T19:00:00.000Z	58 \| moderate	12.703 \| fine	57.07 \| fine	45.377 \| good	0.247 \| good	0.475 \| good	0.159 \| good
2025-09-07T20:00:00.000Z	56 \| moderate	12.393 \| fine	56.105 \| fine	46.682 \| good	0.239 \| good	0.435 \| good	0.158 \| good
2025-09-07T21:00:00.000Z	58 \| moderate	13.171 \| fine	59.991 \| fine	45.68 \| good	0.231 \| good	0.395 \| good	0.158 \| good
2025-09-07T22:00:00.000Z	58 \| moderate	13.088 \| fine	58.474 \| fine	44.744 \| good	0.213 \| good	0.64 \| good	0.161 \| good
2025-09-07T23:00:00.000Z	58 \| moderate	12.694 \| fine	56.952 \| fine	45.956 \| good	0.195 \| good	0.884 \| good	0.164 \| good
2025-09-08T00:00:00.000Z	56 \| moderate	12.376 \| fine	12.856 \| good	49.295 \| good	0.178 \| good	1.14 \| good	0.167 \| good
2025-09-08T01:00:00.000Z	58 \| moderate	13.441 \| fine	60.703 \| fine	39.842 \| good	0.168 \| good	2.357 \| good	0.18 \| good
2025-09-08T02:00:00.000Z	60 \| moderate	13.675 \| fine	61.63 \| fine	34.846 \| good	0.158 \| good	3.586 \| good	0.192 \| 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

Rapid City, South Dakota

Box Elder, South Dakota

Gillette, Wyoming

Sheridan, Wyoming

Casper, Wyoming

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?