What are the current PM10 levels at Watertown, South Dakota?

The current PM10 levels in Watertown, South Dakota are 121.99 μg/m3.

What are the current sulfur dioxide (SO2) levels at Watertown, South Dakota?

The current sulfur dioxide (SO2) levels in Watertown, South Dakota are 1.122 ppb.

What are the current ozone (O3) levels at Watertown, South Dakota?

The current ozone (O3) levels at Watertown, South Dakota is 43.999 ppm.

What are the current nitrogen dioxide (NO2) levels at Watertown, South Dakota?

The current nitrogen dioxide (NO2) levels at Watertown, South Dakota is 4.951 ppb.

Real-time air quality index in Watertown, South Dakota today

Q: What are the current PM2.5 levels in Watertown, South Dakota?

The measured PM2.5 levels in Watertown, South Dakota at present are 14.599 μg/m3.

Stay updated with real-time air quality in Watertown, 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

Watertown, South Dakota

Last updated: ... (Local time)

Common air pollutants in Watertown, South Dakota

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

14.60 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

121.99 μg/m³

155

255

425

605+

Ozone (O₃)

44.00 ppb

201

201+

Sulfur Dioxide (SO₂)

1.12 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.95 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Watertown, South Dakota

Scroll To Air Quality Map

Track live Watertown, South Dakota air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	78 \| moderate	7 \| good	109.988 \| fine	44.999 \| good	0.915 \| good	2.853 \| good	0.199 \| good
2026-10-20T23:00:00.000Z	88 \| moderate	9.5 \| good	128.984 \| fine	42.999 \| good	0.881 \| good	2.587 \| good	0.219 \| good
2026-10-21T00:00:00.000Z	75 \| moderate	8.5 \| good	103.989 \| fine	40 \| good	0.792 \| good	4.067 \| good	0.299 \| good
2026-10-21T01:00:00.000Z	66 \| moderate	8.4 \| good	85.993 \| fine	40 \| good	0.688 \| good	4.59 \| good	0.34 \| good
2026-10-21T02:00:00.000Z	66 \| moderate	8.1 \| good	84.993 \| fine	39 \| good	0.688 \| good	4.294 \| good	0.3 \| good
2026-10-21T03:00:00.000Z	38 \| good	7.041 \| good	31.382 \| good	14.095 \| good	0.525 \| good	1.766 \| good	0.147 \| good
2026-10-21T04:00:00.000Z	55 \| moderate	9.2 \| good	62.999 \| fine	32.001 \| good	0.637 \| good	6.032 \| good	0.22 \| good
2026-10-21T05:00:00.000Z	55 \| moderate	9.2 \| good	62.998 \| fine	29.001 \| good	0.586 \| good	6.468 \| good	0.219 \| good
2026-10-21T06:00:00.000Z	52 \| moderate	10.3 \| good	57 \| fine	31 \| good	0.569 \| good	4.038 \| good	0.18 \| good
2026-10-21T07:00:00.000Z	52 \| moderate	9.9 \| good	55.999 \| fine	32 \| good	0.671 \| good	3.405 \| good	0.22 \| good
2026-10-21T08:00:00.000Z	52 \| moderate	9.6 \| good	52.999 \| good	33.999 \| good	0.603 \| good	2.924 \| good	0.2 \| good
2026-10-21T09:00:00.000Z	69 \| moderate	10.6 \| good	90.991 \| fine	27 \| good	0.637 \| good	3.172 \| good	0.18 \| good
2026-10-21T10:00:00.000Z	55 \| moderate	9.8 \| good	63.996 \| fine	19.001 \| good	0.55 \| good	3.437 \| good	0.2 \| good
2026-10-21T11:00:00.000Z	52 \| moderate	10 \| good	50.997 \| good	19 \| good	0.599 \| good	3.437 \| good	0.24 \| good
2026-10-21T12:00:00.000Z	52 \| moderate	10.2 \| good	41.998 \| good	15.001 \| good	0.615 \| good	6.674 \| good	0.24 \| good
2026-10-21T13:00:00.000Z	54 \| moderate	11 \| good	37.999 \| good	10.002 \| good	0.619 \| good	5.753 \| good	0.26 \| good
2026-10-21T14:00:00.000Z	56 \| moderate	12.3 \| fine	57.995 \| fine	9.001 \| good	0.601 \| good	6.411 \| good	0.299 \| good
2026-10-21T15:00:00.000Z	73 \| moderate	12.799 \| fine	98.988 \| fine	14 \| good	0.653 \| good	6.373 \| good	0.239 \| good
2026-10-21T16:00:00.000Z	74 \| moderate	15.399 \| fine	100.988 \| fine	14.001 \| good	0.618 \| good	2.895 \| good	0.239 \| good
2026-10-21T17:00:00.000Z	64 \| moderate	12.999 \| fine	80.992 \| fine	17 \| good	0.706 \| good	4.734 \| good	0.239 \| good
2026-10-21T18:00:00.000Z	64 \| moderate	11.699 \| good	80.993 \| fine	23 \| good	0.738 \| good	6.405 \| good	0.239 \| good
2026-10-21T19:00:00.000Z	58 \| moderate	10.2 \| good	68.995 \| fine	28 \| good	0.733 \| good	5.485 \| good	0.239 \| good
2026-10-21T20:00:00.000Z	51 \| moderate	8.9 \| good	55.998 \| fine	34 \| good	0.758 \| good	2.772 \| good	0.28 \| good
2026-10-21T21:00:00.000Z	45 \| good	8.5 \| good	49 \| good	35 \| good	0.724 \| good	2.719 \| good	0.26 \| good
2026-10-21T22:00:00.000Z	41 \| good	6.5 \| good	44 \| good	40 \| good	0.69 \| good	3.693 \| good	0.26 \| good
2026-10-21T23:00:00.000Z	41 \| good	6.5 \| good	44.001 \| good	40 \| good	0.725 \| good	3.713 \| good	0.259 \| good
2026-10-22T00:00:00.000Z	52 \| moderate	9 \| good	57.001 \| fine	37.999 \| good	0.654 \| good	7.365 \| good	0.497 \| good
2026-10-22T01:00:00.000Z	52 \| moderate	9 \| good	57.002 \| fine	38.999 \| good	0.619 \| good	7.681 \| good	0.538 \| good
2026-10-22T02:00:00.000Z	60 \| moderate	12.7 \| fine	73.005 \| fine	33.999 \| good	0.652 \| good	6.961 \| good	0.856 \| good
2026-10-22T03:00:00.000Z	62 \| moderate	15.051 \| fine	66.985 \| fine	16.557 \| good	0.422 \| good	4.21 \| good	0.182 \| good
2026-10-22T04:00:00.000Z	63 \| moderate	11.6 \| good	79.003 \| fine	22 \| good	0.805 \| good	7.804 \| good	1.073 \| good
2026-10-22T05:00:00.000Z	64 \| moderate	11.101 \| good	82.006 \| fine	17.001 \| good	0.551 \| good	5.646 \| good	0.994 \| good
2026-10-22T06:00:00.000Z	56 \| moderate	10.001 \| good	66.01 \| fine	16.001 \| good	0.707 \| good	6.519 \| good	0.873 \| good
2026-10-22T07:00:00.000Z	56 \| moderate	9.601 \| good	66.004 \| fine	9.001 \| good	0.865 \| good	10.383 \| good	0.897 \| good
2026-10-22T08:00:00.000Z	56 \| moderate	10.2 \| good	66.001 \| fine	5.001 \| good	0.677 \| good	11.355 \| good	0.774 \| good
2026-10-22T09:00:00.000Z	59 \| moderate	9.6 \| good	70.998 \| fine	2.002 \| good	0.83 \| good	9.952 \| good	0.695 \| good
2026-10-22T10:00:00.000Z	55 \| moderate	9.5 \| good	63.998 \| fine	5.001 \| good	0.762 \| good	10.211 \| good	0.696 \| good
2026-10-22T11:00:00.000Z	52 \| moderate	9.4 \| good	56.998 \| fine	5.001 \| good	0.779 \| good	10.654 \| good	0.696 \| good
2026-10-22T12:00:00.000Z	56 \| moderate	9.8 \| good	65.996 \| fine	5.001 \| good	0.898 \| good	7.942 \| good	0.815 \| good
2026-10-22T13:00:00.000Z	49 \| good	9.5 \| good	51.998 \| good	6.679 \| good	1.43 \| good	8.404 \| good	0.997 \| good
2026-10-22T14:00:00.000Z	52 \| moderate	9.6 \| good	57.998 \| fine	4.001 \| good	1.402 \| good	7.311 \| good	0.815 \| good
2026-10-22T15:00:00.000Z	69 \| moderate	10.1 \| good	90.992 \| fine	7.001 \| good	0.905 \| good	3.785 \| good	0.558 \| good
2026-10-22T16:00:00.000Z	75 \| moderate	12 \| good	102.992 \| fine	16 \| good	0.684 \| good	6.024 \| good	0.359 \| good
2026-10-22T17:00:00.000Z	75 \| moderate	12 \| good	102.992 \| fine	24 \| good	0.852 \| good	4.409 \| good	0.319 \| good
2026-10-22T18:00:00.000Z	64 \| moderate	11.3 \| good	81.996 \| fine	29 \| good	0.861 \| good	4.621 \| good	0.299 \| good
2026-10-22T19:00:00.000Z	64 \| moderate	11.3 \| good	81.996 \| fine	35.999 \| good	1.187 \| good	3.929 \| good	0.279 \| good
2026-10-22T20:00:00.000Z	84 \| moderate	14.599 \| fine	121.989 \| fine	41.999 \| good	1.311 \| good	5.343 \| good	0.259 \| good
2026-10-22T21:00:00.000Z	84 \| moderate	14.599 \| fine	121.99 \| fine	43.999 \| good	1.122 \| good	4.951 \| good	0.279 \| good
2026-10-22T21:00:00.000Z	84 \| moderate	14.599 \| fine	121.99 \| fine	43.999 \| good	1.122 \| good	4.951 \| good	0.279 \| good
2026-10-22T22:00:00.000Z	44 \| good	7.855 \| good	34.398 \| good	47.905 \| good	0.359 \| good	0.75 \| good	0.155 \| good
2026-10-22T23:00:00.000Z	42 \| good	7.385 \| good	32.457 \| good	45.05 \| good	0.322 \| good	1.183 \| good	0.159 \| good
2026-10-23T00:00:00.000Z	37 \| good	5.861 \| good	25.842 \| good	39.928 \| good	0.301 \| good	1.585 \| good	0.164 \| good
2026-10-23T01:00:00.000Z	29 \| good	5.358 \| good	23 \| good	31.017 \| good	0.305 \| good	1.709 \| good	0.168 \| good
2026-10-23T02:00:00.000Z	44 \| good	8.001 \| good	35.004 \| good	35.542 \| good	0.356 \| good	1.701 \| good	0.171 \| good
2026-10-23T03:00:00.000Z	56 \| moderate	11.639 \| good	51 \| good	36.404 \| good	0.455 \| good	1.667 \| good	0.171 \| good
2026-10-23T04:00:00.000Z	56 \| moderate	11.696 \| good	51.421 \| good	39.883 \| good	0.558 \| good	1.666 \| good	0.169 \| good
2026-10-23T05:00:00.000Z	49 \| good	9.126 \| good	40.805 \| good	28.697 \| good	0.622 \| good	1.652 \| good	0.166 \| good
2026-10-23T06:00:00.000Z	44 \| good	7.928 \| good	34.876 \| good	28.775 \| good	0.632 \| good	1.58 \| good	0.163 \| good
2026-10-23T07:00:00.000Z	44 \| good	7.864 \| good	34.071 \| good	29.51 \| good	0.602 \| good	1.509 \| good	0.16 \| good
2026-10-23T08:00:00.000Z	38 \| good	7.287 \| good	32 \| good	27.915 \| good	0.549 \| good	1.479 \| good	0.158 \| good
2026-10-23T09:00:00.000Z	44 \| good	7.775 \| good	34 \| good	30.794 \| good	0.49 \| good	1.49 \| good	0.155 \| good
2026-10-23T10:00:00.000Z	38 \| good	6.955 \| good	30.883 \| good	28.555 \| good	0.436 \| good	1.507 \| good	0.152 \| good
2026-10-23T11:00:00.000Z	33 \| good	5.927 \| good	26.706 \| good	27.439 \| good	0.396 \| good	1.511 \| good	0.15 \| good
2026-10-23T12:00:00.000Z	33 \| good	5.887 \| good	25.958 \| good	24.877 \| good	0.374 \| good	1.517 \| good	0.148 \| good
2026-10-23T13:00:00.000Z	27 \| good	4.945 \| good	21 \| good	24.908 \| good	0.365 \| good	1.662 \| good	0.147 \| good
2026-10-23T14:00:00.000Z	44 \| good	7.519 \| good	32.977 \| good	31.093 \| good	0.358 \| good	1.89 \| good	0.147 \| good
2026-10-23T15:00:00.000Z	38 \| good	6.622 \| good	29.543 \| good	41.035 \| good	0.354 \| good	1.674 \| good	0.148 \| good
2026-10-23T16:00:00.000Z	52 \| moderate	10.408 \| good	46.05 \| good	41.18 \| good	0.363 \| good	1.494 \| good	0.149 \| good
2026-10-23T17:00:00.000Z	52 \| moderate	10.343 \| good	45.933 \| good	45.724 \| good	0.404 \| good	1.259 \| good	0.149 \| good
2026-10-23T18:00:00.000Z	52 \| moderate	10.205 \| good	45 \| good	48.09 \| good	0.437 \| good	1.032 \| good	0.15 \| good
2026-10-23T19:00:00.000Z	52 \| moderate	10.188 \| good	45 \| good	51.339 \| good	0.457 \| good	0.87 \| good	0.152 \| good
2026-10-23T20:00:00.000Z	52 \| moderate	10.239 \| good	45.071 \| good	52.631 \| good	0.476 \| good	0.803 \| good	0.153 \| good
2026-10-23T21:00:00.000Z	58 \| moderate	12.5 \| fine	56.807 \| fine	51.129 \| good	0.502 \| good	0.847 \| good	0.154 \| good
2026-10-23T22:00:00.000Z	58 \| moderate	12.563 \| fine	56.951 \| fine	52.855 \| good	0.528 \| good	0.962 \| good	0.155 \| good
2026-10-23T23:00:00.000Z	52 \| moderate	9.826 \| good	43.853 \| good	45.905 \| good	0.551 \| good	1.137 \| good	0.157 \| good
2026-10-24T00:00:00.000Z	49 \| good	9.13 \| good	41 \| good	47.659 \| good	0.572 \| good	1.235 \| good	0.158 \| good
2026-10-24T01:00:00.000Z	52 \| moderate	9.719 \| good	43 \| good	41.024 \| good	0.589 \| good	1.216 \| good	0.158 \| good
2026-10-24T02:00:00.000Z	56 \| moderate	11.721 \| good	51.887 \| good	47.54 \| good	0.592 \| good	1.161 \| good	0.157 \| good
2026-10-24T03:00:00.000Z	58 \| moderate	12.839 \| fine	57.247 \| fine	47.687 \| good	0.584 \| good	1.098 \| good	0.157 \| good
2026-10-24T04:00:00.000Z	58 \| moderate	13.208 \| fine	59 \| fine	45.999 \| good	0.562 \| good	1.046 \| good	0.157 \| good
2026-10-24T05:00:00.000Z	56 \| moderate	11.608 \| good	51 \| good	41.241 \| good	0.528 \| good	1 \| good	0.157 \| good
2026-10-24T06:00:00.000Z	52 \| moderate	10.369 \| good	46 \| good	43.083 \| good	0.492 \| good	0.955 \| good	0.156 \| good
2026-10-24T07:00:00.000Z	52 \| moderate	9.535 \| good	42.777 \| good	44.459 \| good	0.462 \| good	0.932 \| good	0.156 \| good
2026-10-24T08:00:00.000Z	36 \| good	6.08 \| good	27.071 \| good	38.563 \| good	0.439 \| good	0.934 \| good	0.156 \| good
2026-10-24T09:00:00.000Z	38 \| good	7.435 \| good	32.604 \| good	33.899 \| good	0.423 \| good	0.957 \| good	0.156 \| good
2026-10-24T10:00:00.000Z	44 \| good	8.437 \| good	36.885 \| good	33.32 \| good	0.409 \| good	1.002 \| good	0.156 \| good
2026-10-24T11:00:00.000Z	38 \| good	6.855 \| good	30.507 \| good	36.855 \| good	0.385 \| good	1.062 \| good	0.156 \| good
2026-10-24T12:00:00.000Z	38 \| good	6.958 \| good	30.888 \| good	32.488 \| good	0.326 \| good	1.137 \| good	0.153 \| good
2026-10-24T13:00:00.000Z	30 \| good	5.341 \| good	22.915 \| good	32.237 \| good	0.243 \| good	1.223 \| good	0.145 \| good
2026-10-24T14:00:00.000Z	38 \| good	7.318 \| good	32.023 \| good	24.112 \| good	0.209 \| good	0.973 \| good	0.146 \| good
2026-10-24T15:00:00.000Z	33 \| good	5.694 \| good	24.491 \| good	26.917 \| good	0.202 \| good	0.707 \| good	0.151 \| good
2026-10-24T16:00:00.000Z	27 \| good	5.411 \| good	23.047 \| good	24.17 \| good	0.178 \| good	0.56 \| good	0.151 \| good
2026-10-24T17:00:00.000Z	27 \| good	4.76 \| good	20.977 \| good	23.272 \| good	0.183 \| good	0.453 \| good	0.147 \| good
2026-10-24T18:00:00.000Z	27 \| good	5.485 \| good	23.05 \| good	23.054 \| good	0.231 \| good	0.383 \| good	0.144 \| good
2026-10-24T19:00:00.000Z	23 \| good	3.749 \| good	16.04 \| good	24.805 \| good	0.286 \| good	0.364 \| good	0.143 \| good
2026-10-24T20:00:00.000Z	23 \| good	3.146 \| good	13.676 \| good	24.767 \| good	0.326 \| good	0.396 \| good	0.142 \| good
2026-10-24T21:00:00.000Z	27 \| good	1.953 \| good	8.054 \| good	28.598 \| good	0.35 \| good	0.465 \| good	0.142 \| good

Watertown

Empower business decisions with accurate air quality data

Watertown, South Dakota air quality map: Real-time AQI near you

0.24ppm

How accurate is South Dakota, USA air quality data?

Air quality measurements for South Dakota, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Watertown, South Dakota updated?

Air quality data for Watertown, South Dakota is updated on an hourly basis.

When did Watertown, South Dakota experience the worst air quality in the last 24 hours?

The worst air quality in Watertown, South Dakota was recorded at 08:00:00 on 2026-10-22.

When did Watertown, South Dakota have its best air quality in the last 24 hours?

The best air quality in Watertown, South Dakota was recorded at 11:00:00 on 2026-10-21.

What is the real-time air quality index for Watertown, South Dakota?

The real-time air quality index in Watertown, South Dakota is 84, currently categorized as Moderate.

Which pollutant is found most often in Watertown, South Dakota?

The most common pollutant in Watertown, South Dakota is PM10.

What can I do if the air quality in Watertown, South Dakota is poor?

If the air quality in Watertown, South Dakota is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Watertown, South Dakota?

The measured PM_2.5 levels in Watertown, South Dakota at present are 14.599 μg/m³.

What are the current PM₁₀ levels at Watertown, South Dakota?

The current PM₁₀ levels in Watertown, South Dakota are 121.99 μg/m³.

What are the current carbon monoxide (CO) levels at Watertown, South Dakota?

The current carbon monoxide (CO) level in Watertown, South Dakota is 0.279 ppm.

What are the current sulfur dioxide (SO₂) levels at Watertown, South Dakota?

The current sulfur dioxide (SO₂) levels in Watertown, South Dakota are 1.122 ppb.

What are the current ozone (O₃) levels at Watertown, South Dakota?

The current ozone (O₃) levels at Watertown, South Dakota is 43.999 ppm.

What are the current nitrogen dioxide (NO₂) levels at Watertown, South Dakota?

The current nitrogen dioxide (NO₂) levels at Watertown, South Dakota is 4.951 ppb.

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