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

The current PM10 levels in Watertown, South Dakota are 78.991 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 0.69 ppb.

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

The current ozone (O3) levels at Watertown, South Dakota is 35.001 ppm.

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

The current nitrogen dioxide (NO2) levels at Watertown, South Dakota is 3.279 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 9.899 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)

9.90 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

78.99 μg/m³

155

255

425

605+

Ozone (O₃)

35.00 ppb

201

201+

Sulfur Dioxide (SO₂)

0.69 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.28 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
2026-07-21T22:00:00.000Z	71 \| moderate	19.999 \| fine	88.99 \| fine	33.001 \| good	0.657 \| good	2.088 \| good	0.3 \| good
2026-07-21T23:00:00.000Z	71 \| moderate	19.599 \| fine	75.993 \| fine	33.001 \| good	0.691 \| good	2.27 \| good	0.28 \| good
2026-07-22T00:00:00.000Z	67 \| moderate	17.999 \| fine	86.99 \| fine	33 \| good	0.726 \| good	1.824 \| good	0.3 \| good
2026-07-22T01:00:00.000Z	66 \| moderate	17 \| fine	60 \| fine	34 \| good	0.742 \| good	1.838 \| good	0.28 \| good
2026-07-22T02:00:00.000Z	62 \| moderate	14.9 \| fine	48 \| good	33 \| good	0.706 \| good	1.76 \| good	0.319 \| good
2026-07-22T03:00:00.000Z	62 \| moderate	15 \| fine	46.999 \| good	32 \| good	0.74 \| good	1.714 \| good	0.26 \| good
2026-07-22T04:00:00.000Z	58 \| moderate	13.2 \| fine	39.999 \| good	29 \| good	0.87 \| good	3.177 \| good	0.241 \| good
2026-07-22T05:00:00.000Z	60 \| moderate	13.502 \| fine	38.009 \| good	27 \| good	2.482 \| good	3.048 \| good	0.22 \| good
2026-07-22T06:00:00.000Z	60 \| moderate	14.301 \| fine	42.005 \| good	24 \| good	1.087 \| good	2.24 \| good	0.24 \| good
2026-07-22T07:00:00.000Z	60 \| moderate	14.301 \| fine	42.001 \| good	24 \| good	0.772 \| good	2.342 \| good	0.222 \| good
2026-07-22T08:00:00.000Z	60 \| moderate	14.301 \| fine	41.999 \| good	24 \| good	0.62 \| good	4.15 \| good	0.2 \| good
2026-07-22T09:00:00.000Z	66 \| moderate	16.821 \| fine	45.839 \| good	23.999 \| good	0.926 \| good	3.805 \| good	0.2 \| good
2026-07-22T10:00:00.000Z	52 \| moderate	10.112 \| good	44.33 \| good	3.12 \| good	0.25 \| good	4.363 \| good	0.201 \| good
2026-07-22T11:00:00.000Z	52 \| moderate	10.32 \| good	43.699 \| good	3.227 \| good	0.268 \| good	5.246 \| good	0.205 \| good
2026-07-22T12:00:00.000Z	52 \| moderate	10.393 \| good	44.079 \| good	9.196 \| good	0.31 \| good	5.222 \| good	0.197 \| good
2026-07-22T13:00:00.000Z	54 \| moderate	10.545 \| good	46.828 \| good	10.984 \| good	0.298 \| good	3.729 \| good	0.198 \| good
2026-07-22T14:00:00.000Z	49 \| good	8.584 \| good	37.587 \| good	14.998 \| good	0.267 \| good	2.236 \| good	0.184 \| good
2026-07-22T15:00:00.000Z	49 \| good	9.406 \| good	41.859 \| good	19.098 \| good	0.211 \| good	1.178 \| good	0.171 \| good
2026-07-22T16:00:00.000Z	44 \| good	8.1 \| good	23.004 \| good	28.999 \| good	0.635 \| good	5.793 \| good	0.321 \| good
2026-07-22T17:00:00.000Z	44 \| good	8.1 \| good	23.002 \| good	28.999 \| good	1.572 \| good	5.258 \| good	0.3 \| good
2026-07-22T18:00:00.000Z	44 \| good	8.1 \| good	23.001 \| good	29 \| good	1.929 \| good	4.822 \| good	0.28 \| good
2026-07-22T19:00:00.000Z	49 \| good	9.243 \| good	27.471 \| good	29 \| good	0.622 \| good	5.334 \| good	0.3 \| good
2026-07-22T20:00:00.000Z	52 \| moderate	10.198 \| good	44.42 \| good	11.228 \| good	0.156 \| good	0.544 \| good	0.164 \| good
2026-07-22T21:00:00.000Z	44 \| good	8.178 \| good	35.711 \| good	11.838 \| good	0.14 \| good	0.508 \| good	0.168 \| good
2026-07-22T22:00:00.000Z	52 \| moderate	10.496 \| good	46.087 \| good	13.917 \| good	0.133 \| good	0.601 \| good	0.171 \| good
2026-07-22T23:00:00.000Z	44 \| good	7.7 \| good	25 \| good	35 \| good	1.643 \| good	5.551 \| good	0.3 \| good
2026-07-23T00:00:00.000Z	44 \| good	8.5 \| good	23 \| good	37 \| good	1.599 \| good	5.722 \| good	0.3 \| good
2026-07-23T01:00:00.000Z	49 \| good	9.2 \| good	22 \| good	37 \| good	0.747 \| good	3.096 \| good	0.319 \| good
2026-07-23T02:00:00.000Z	44 \| good	8.3 \| good	23.999 \| good	37 \| good	0.694 \| good	1.68 \| good	0.3 \| good
2026-07-23T03:00:00.000Z	56 \| moderate	11.676 \| good	51.463 \| good	1.197 \| good	0.11 \| good	4.355 \| good	0.173 \| good
2026-07-23T04:00:00.000Z	38 \| good	7.2 \| good	30.998 \| good	31.999 \| good	0.606 \| good	1.315 \| good	0.339 \| good
2026-07-23T05:00:00.000Z	38 \| good	6.9 \| good	31.999 \| good	28.999 \| good	0.658 \| good	1.728 \| good	0.379 \| good
2026-07-23T06:00:00.000Z	38 \| good	6.9 \| good	26 \| good	27.999 \| good	0.62 \| good	1.732 \| good	0.299 \| good
2026-07-23T07:00:00.000Z	38 \| good	6.9 \| good	26 \| good	27.999 \| good	0.64 \| good	1.407 \| good	0.28 \| good
2026-07-23T08:00:00.000Z	38 \| good	6.6 \| good	21 \| good	23.999 \| good	0.643 \| good	1.595 \| good	0.24 \| good
2026-07-23T09:00:00.000Z	38 \| good	7.4 \| good	20 \| good	19.999 \| good	0.661 \| good	1.246 \| good	0.24 \| good
2026-07-23T10:00:00.000Z	44 \| good	7.7 \| good	18 \| good	20.999 \| good	0.625 \| good	1.585 \| good	0.24 \| good
2026-07-23T11:00:00.000Z	38 \| good	7.2 \| good	18.999 \| good	19.999 \| good	0.59 \| good	1.775 \| good	0.22 \| good
2026-07-23T12:00:00.000Z	38 \| good	7.5 \| good	17.999 \| good	18 \| good	0.617 \| good	2.142 \| good	0.359 \| good
2026-07-23T13:00:00.000Z	38 \| good	7.2 \| good	19.999 \| good	18 \| good	0.638 \| good	2.327 \| good	0.379 \| good
2026-07-23T14:00:00.000Z	38 \| good	6.899 \| good	36.997 \| good	18 \| good	0.685 \| good	2.629 \| good	0.24 \| good
2026-07-23T15:00:00.000Z	38 \| good	6.899 \| good	36.996 \| good	21 \| good	0.738 \| good	5.995 \| good	0.26 \| good
2026-07-23T16:00:00.000Z	42 \| good	6.7 \| good	44.996 \| good	25 \| good	0.987 \| good	4.595 \| good	0.22 \| good
2026-07-23T17:00:00.000Z	65 \| moderate	9.199 \| good	82.989 \| fine	29 \| good	0.849 \| good	3.559 \| good	0.22 \| good
2026-07-23T18:00:00.000Z	65 \| moderate	10.599 \| good	82.99 \| fine	31 \| good	0.866 \| good	3.126 \| good	0.22 \| good
2026-07-23T19:00:00.000Z	65 \| moderate	10.799 \| good	83.99 \| fine	33 \| good	0.933 \| good	3.068 \| good	0.24 \| good
2026-07-23T20:00:00.000Z	63 \| moderate	10.299 \| good	78.991 \| fine	35 \| good	0.64 \| good	3.62 \| good	0.24 \| good
2026-07-23T21:00:00.000Z	63 \| moderate	9.899 \| good	78.991 \| fine	35.001 \| good	0.69 \| good	3.279 \| good	0.28 \| good
2026-07-23T21:00:00.000Z	63 \| moderate	9.899 \| good	78.991 \| fine	35.001 \| good	0.69 \| good	3.279 \| good	0.28 \| good
2026-07-23T22:00:00.000Z	64 \| moderate	15.736 \| fine	70.06 \| fine	20.857 \| good	0.32 \| good	0.551 \| good	0.142 \| good
2026-07-23T23:00:00.000Z	66 \| moderate	16.586 \| fine	73.867 \| fine	21.465 \| good	0.268 \| good	1.223 \| good	0.146 \| good
2026-07-24T00:00:00.000Z	64 \| moderate	16.202 \| fine	71.817 \| fine	3.805 \| good	0.237 \| good	1.923 \| good	0.15 \| good
2026-07-24T01:00:00.000Z	69 \| moderate	19.162 \| fine	84.633 \| fine	3.885 \| good	0.217 \| good	2.658 \| good	0.155 \| good
2026-07-24T02:00:00.000Z	60 \| moderate	14.345 \| fine	63.993 \| fine	8.53 \| good	0.207 \| good	3.193 \| good	0.159 \| good
2026-07-24T03:00:00.000Z	64 \| moderate	15.676 \| fine	69.226 \| fine	12.756 \| good	0.21 \| good	3.566 \| good	0.163 \| good
2026-07-24T04:00:00.000Z	66 \| moderate	16.629 \| fine	73.142 \| fine	5.684 \| good	0.218 \| good	3.471 \| good	0.165 \| good
2026-07-24T05:00:00.000Z	79 \| moderate	23.939 \| fine	104.866 \| fine	8.071 \| good	0.219 \| good	3.093 \| good	0.168 \| good
2026-07-24T06:00:00.000Z	67 \| moderate	17.584 \| fine	78.727 \| fine	12.383 \| good	0.209 \| good	2.741 \| good	0.173 \| good
2026-07-24T07:00:00.000Z	62 \| moderate	15.213 \| fine	69 \| fine	13.753 \| good	0.197 \| good	2.58 \| good	0.178 \| good
2026-07-24T08:00:00.000Z	60 \| moderate	13.669 \| fine	61.068 \| fine	7.666 \| good	0.189 \| good	2.533 \| good	0.183 \| good
2026-07-24T09:00:00.000Z	54 \| moderate	10.58 \| good	47.034 \| good	11.863 \| good	0.18 \| good	2.427 \| good	0.184 \| good
2026-07-24T10:00:00.000Z	52 \| moderate	9.943 \| good	44.113 \| good	10.784 \| good	0.167 \| good	2.338 \| good	0.181 \| good
2026-07-24T11:00:00.000Z	58 \| moderate	13.411 \| fine	60.626 \| fine	17.939 \| good	0.16 \| good	2.375 \| good	0.176 \| good
2026-07-24T12:00:00.000Z	56 \| moderate	11.678 \| good	51 \| good	12.283 \| good	0.165 \| good	2.266 \| good	0.173 \| good
2026-07-24T13:00:00.000Z	56 \| moderate	11.522 \| good	51 \| good	10.821 \| good	0.208 \| good	1.794 \| good	0.173 \| good
2026-07-24T14:00:00.000Z	56 \| moderate	11.84 \| good	52.226 \| good	13.91 \| good	0.281 \| good	1.455 \| good	0.178 \| good
2026-07-24T15:00:00.000Z	56 \| moderate	11.724 \| good	51.562 \| good	24.955 \| good	0.309 \| good	1.162 \| good	0.182 \| good
2026-07-24T16:00:00.000Z	54 \| moderate	10.87 \| good	48 \| good	27.954 \| good	0.299 \| good	0.944 \| good	0.184 \| good
2026-07-24T17:00:00.000Z	54 \| moderate	11.261 \| good	50 \| good	22.44 \| good	0.28 \| good	0.808 \| good	0.187 \| good
2026-07-24T18:00:00.000Z	60 \| moderate	14.09 \| fine	63 \| fine	21.473 \| good	0.266 \| good	0.772 \| good	0.19 \| good
2026-07-24T19:00:00.000Z	60 \| moderate	13.619 \| fine	61 \| fine	19.775 \| good	0.238 \| good	0.718 \| good	0.192 \| good
2026-07-24T20:00:00.000Z	64 \| moderate	15.958 \| fine	71 \| fine	24.886 \| good	0.218 \| good	0.731 \| good	0.194 \| good
2026-07-24T21:00:00.000Z	60 \| moderate	14.387 \| fine	64.866 \| fine	21.506 \| good	0.202 \| good	0.725 \| good	0.196 \| good
2026-07-24T22:00:00.000Z	64 \| moderate	15.594 \| fine	69.142 \| fine	23.567 \| good	0.18 \| good	0.659 \| good	0.196 \| good
2026-07-24T23:00:00.000Z	58 \| moderate	12.887 \| fine	57.982 \| fine	29.813 \| good	0.162 \| good	0.667 \| good	0.197 \| good
2026-07-25T00:00:00.000Z	52 \| moderate	10.474 \| good	46.378 \| good	31.176 \| good	0.15 \| good	0.787 \| good	0.198 \| good
2026-07-25T01:00:00.000Z	54 \| moderate	11.224 \| good	49.856 \| good	27.167 \| good	0.136 \| good	1.192 \| good	0.202 \| good
2026-07-25T02:00:00.000Z	62 \| moderate	15.481 \| fine	69 \| fine	28.457 \| good	0.135 \| good	1.669 \| good	0.205 \| good
2026-07-25T03:00:00.000Z	69 \| moderate	18.532 \| fine	81.725 \| fine	28.466 \| good	0.152 \| good	1.928 \| good	0.208 \| good
2026-07-25T04:00:00.000Z	58 \| moderate	13.257 \| fine	59.08 \| fine	19.399 \| good	0.188 \| good	2.062 \| good	0.212 \| good
2026-07-25T05:00:00.000Z	54 \| moderate	11.359 \| good	50.075 \| good	13.86 \| good	0.247 \| good	2.165 \| good	0.215 \| good
2026-07-25T06:00:00.000Z	52 \| moderate	9.605 \| good	43 \| good	12.172 \| good	0.307 \| good	2.257 \| good	0.217 \| good
2026-07-25T07:00:00.000Z	52 \| moderate	10.242 \| good	45 \| good	15.609 \| good	0.332 \| good	2.346 \| good	0.218 \| good
2026-07-25T08:00:00.000Z	52 \| moderate	9.607 \| good	43 \| good	12.509 \| good	0.309 \| good	2.459 \| good	0.218 \| good
2026-07-25T09:00:00.000Z	49 \| good	9.283 \| good	41 \| good	13.903 \| good	0.258 \| good	2.606 \| good	0.217 \| good
2026-07-25T10:00:00.000Z	49 \| good	8.641 \| good	38 \| good	10.672 \| good	0.207 \| good	2.766 \| good	0.216 \| good
2026-07-25T11:00:00.000Z	58 \| moderate	12.736 \| fine	57 \| fine	10.728 \| good	0.173 \| good	2.977 \| good	0.214 \| good
2026-07-25T12:00:00.000Z	56 \| moderate	11.823 \| good	51.933 \| good	11.025 \| good	0.144 \| good	2.914 \| good	0.211 \| good
2026-07-25T13:00:00.000Z	54 \| moderate	10.858 \| good	48.015 \| good	13.215 \| good	0.116 \| good	2.461 \| good	0.21 \| good
2026-07-25T14:00:00.000Z	54 \| moderate	10.644 \| good	47.432 \| good	16.506 \| good	0.112 \| good	1.935 \| good	0.207 \| good
2026-07-25T15:00:00.000Z	49 \| good	8.975 \| good	39.838 \| good	20.117 \| good	0.111 \| good	1.379 \| good	0.199 \| good
2026-07-25T16:00:00.000Z	56 \| moderate	11.658 \| good	51.507 \| good	22.731 \| good	0.108 \| good	0.939 \| good	0.19 \| good
2026-07-25T17:00:00.000Z	62 \| moderate	14.962 \| fine	66.951 \| fine	18.802 \| good	0.108 \| good	0.696 \| good	0.183 \| good
2026-07-25T18:00:00.000Z	62 \| moderate	15.053 \| fine	67 \| fine	20.026 \| good	0.114 \| good	0.568 \| good	0.179 \| good
2026-07-25T19:00:00.000Z	58 \| moderate	12.689 \| fine	57 \| fine	19.232 \| good	0.126 \| good	0.489 \| good	0.177 \| good
2026-07-25T20:00:00.000Z	56 \| moderate	11.61 \| good	51.025 \| good	28.933 \| good	0.141 \| good	0.439 \| good	0.175 \| good
2026-07-25T21:00:00.000Z	52 \| moderate	9.984 \| good	44.067 \| good	32.145 \| good	0.152 \| good	0.419 \| good	0.172 \| 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 07:00:00 on 2026-07-23.

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 03:00:00 on 2026-07-23.

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

The real-time air quality index in Watertown, South Dakota is 63, 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 9.899 μg/m³.

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

The current PM₁₀ levels in Watertown, South Dakota are 78.991 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 0.28 ppm.

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

The current sulfur dioxide (SO₂) levels in Watertown, South Dakota are 0.69 ppb.

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

The current ozone (O₃) levels at Watertown, South Dakota is 35.001 ppm.

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

The current nitrogen dioxide (NO₂) levels at Watertown, South Dakota is 3.279 ppb.

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