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

The current PM10 levels in Watertown, South Dakota are 4.001 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 1.047 ppb.

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

The current ozone (O3) levels at Watertown, South Dakota is 20 ppm.

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

The current nitrogen dioxide (NO2) levels at Watertown, South Dakota is 2.283 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 0.8 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)

Good

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)

0.80 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

4.00 μg/m³

155

255

425

605+

Ozone (O₃)

20.00 ppb

201

201+

Sulfur Dioxide (SO₂)

1.05 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.28 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.36 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
2026-09-05T12:00:00.000Z	33 \| good	5.7 \| good	19.999 \| good	32.998 \| good	0.738 \| good	2.068 \| good	0.458 \| good
2026-09-05T13:00:00.000Z	33 \| good	5.7 \| good	19.999 \| good	34.998 \| good	0.792 \| good	2.207 \| good	0.44 \| good
2026-09-05T14:00:00.000Z	33 \| good	3.2 \| good	21.998 \| good	35.999 \| good	0.676 \| good	2.967 \| good	0.478 \| good
2026-09-05T15:00:00.000Z	33 \| good	2.3 \| good	18.998 \| good	35.999 \| good	0.64 \| good	2.185 \| good	0.498 \| good
2026-09-05T16:00:00.000Z	31 \| good	2.3 \| good	18.998 \| good	33.999 \| good	0.675 \| good	2.371 \| good	0.518 \| good
2026-09-05T17:00:00.000Z	33 \| good	1.9 \| good	31.996 \| good	35.999 \| good	2.429 \| good	2.499 \| good	0.518 \| good
2026-09-05T18:00:00.000Z	35 \| good	3.2 \| good	34.995 \| good	37.999 \| good	0.938 \| good	2.667 \| good	0.458 \| good
2026-09-05T19:00:00.000Z	35 \| good	4.699 \| good	30.996 \| good	37.999 \| good	0.728 \| good	3.151 \| good	0.457 \| good
2026-09-05T20:00:00.000Z	35 \| good	4.799 \| good	29.996 \| good	37.999 \| good	0.744 \| good	3.555 \| good	0.477 \| good
2026-09-05T21:00:00.000Z	35 \| good	3.9 \| good	27.996 \| good	37.999 \| good	0.777 \| good	2.9 \| good	0.437 \| good
2026-09-05T22:00:00.000Z	35 \| good	3.3 \| good	23.999 \| good	38 \| good	0.883 \| good	2.729 \| good	0.457 \| good
2026-09-05T23:00:00.000Z	37 \| good	3.3 \| good	23.998 \| good	40 \| good	0.88 \| good	3.157 \| good	0.498 \| good
2026-09-06T00:00:00.000Z	39 \| good	2.9 \| good	19.997 \| good	41.999 \| good	0.95 \| good	2.486 \| good	0.458 \| good
2026-09-06T01:00:00.000Z	39 \| good	2.9 \| good	22.997 \| good	41.999 \| good	0.78 \| good	1.414 \| good	0.458 \| good
2026-09-06T02:00:00.000Z	37 \| good	2.2 \| good	22.997 \| good	39.999 \| good	0.693 \| good	1.649 \| good	0.498 \| good
2026-09-06T03:00:00.000Z	38 \| good	6.578 \| good	29.499 \| good	31.127 \| good	0.124 \| good	1.788 \| good	0.15 \| good
2026-09-06T04:00:00.000Z	36 \| good	5 \| good	38.995 \| good	31 \| good	0.745 \| good	3.629 \| good	0.538 \| good
2026-09-06T05:00:00.000Z	36 \| good	5 \| good	38.995 \| good	29 \| good	0.995 \| good	3.688 \| good	0.517 \| good
2026-09-06T06:00:00.000Z	27 \| good	5.099 \| good	26.997 \| good	24.999 \| good	0.882 \| good	3.03 \| good	0.478 \| good
2026-09-06T07:00:00.000Z	27 \| good	5.099 \| good	26.997 \| good	22.999 \| good	0.828 \| good	2.252 \| good	0.46 \| good
2026-09-06T08:00:00.000Z	22 \| good	2.3 \| good	21.998 \| good	23.999 \| good	0.711 \| good	2.089 \| good	0.498 \| good
2026-09-06T09:00:00.000Z	19 \| good	3.4 \| good	16.999 \| good	20.999 \| good	0.66 \| good	1.579 \| good	0.458 \| good
2026-09-06T10:00:00.000Z	20 \| good	2.9 \| good	15.999 \| good	21.999 \| good	0.678 \| good	1.77 \| good	0.418 \| good
2026-09-06T11:00:00.000Z	22 \| good	2.9 \| good	15.999 \| good	23.998 \| good	0.829 \| good	2.137 \| good	0.418 \| good
2026-09-06T12:00:00.000Z	27 \| good	4.7 \| good	17.999 \| good	20.999 \| good	0.81 \| good	2.187 \| good	0.418 \| good
2026-09-06T13:00:00.000Z	33 \| good	5.9 \| good	22.998 \| good	19.999 \| good	0.81 \| good	2.095 \| good	0.4 \| good
2026-09-06T14:00:00.000Z	33 \| good	6.199 \| good	20.999 \| good	20 \| good	0.624 \| good	1.841 \| good	0.418 \| good
2026-09-06T15:00:00.000Z	38 \| good	6.8 \| good	26.998 \| good	23.999 \| good	0.657 \| good	2.368 \| good	0.438 \| good
2026-09-06T16:00:00.000Z	38 \| good	6.8 \| good	26.998 \| good	23.999 \| good	0.676 \| good	2.253 \| good	0.438 \| good
2026-09-06T17:00:00.000Z	49 \| good	8.799 \| good	27.998 \| good	25 \| good	0.711 \| good	2.275 \| good	0.458 \| good
2026-09-06T18:00:00.000Z	54 \| moderate	10.999 \| good	32.998 \| good	24 \| good	0.763 \| good	2.455 \| good	0.438 \| good
2026-09-06T19:00:00.000Z	44 \| good	8 \| good	23.999 \| good	28 \| good	0.799 \| good	2.413 \| good	0.438 \| good
2026-09-06T20:00:00.000Z	44 \| good	8 \| good	23.999 \| good	31.999 \| good	0.73 \| good	2.212 \| good	0.438 \| good
2026-09-06T21:00:00.000Z	31 \| good	5.1 \| good	14 \| good	32.999 \| good	0.746 \| good	1.985 \| good	0.458 \| good
2026-09-06T22:00:00.000Z	33 \| good	4.7 \| good	35.995 \| good	32.999 \| good	0.673 \| good	2.682 \| good	0.458 \| good
2026-09-06T23:00:00.000Z	33 \| good	4.7 \| good	35.995 \| good	32 \| good	0.903 \| good	2.736 \| good	0.478 \| good
2026-09-07T00:00:00.000Z	31 \| good	3 \| good	15 \| good	32.999 \| good	0.712 \| good	3.945 \| good	0.458 \| good
2026-09-07T01:00:00.000Z	31 \| good	3 \| good	15 \| good	33.999 \| good	0.728 \| good	2.831 \| good	0.417 \| good
2026-09-07T02:00:00.000Z	28 \| good	2 \| good	11 \| good	30 \| good	1.059 \| good	2.935 \| good	0.437 \| good
2026-09-07T03:00:00.000Z	54 \| moderate	10.646 \| good	47.067 \| good	36.085 \| good	0.155 \| good	2.074 \| good	0.14 \| good
2026-09-07T04:00:00.000Z	29 \| good	2.4 \| good	11.999 \| good	30.999 \| good	0.761 \| good	1.856 \| good	0.417 \| good
2026-09-07T05:00:00.000Z	27 \| good	2.4 \| good	11.998 \| good	28.999 \| good	0.693 \| good	1.584 \| good	0.398 \| good
2026-09-07T06:00:00.000Z	23 \| good	3.3 \| good	9 \| good	24.999 \| good	0.957 \| good	1.672 \| good	0.378 \| good
2026-09-07T07:00:00.000Z	19 \| good	2.9 \| good	6 \| good	21 \| good	0.828 \| good	1.72 \| good	0.4 \| good
2026-09-07T08:00:00.000Z	19 \| good	2.9 \| good	6 \| good	21 \| good	0.905 \| good	2.166 \| good	0.417 \| good
2026-09-07T09:00:00.000Z	19 \| good	1.9 \| good	7 \| good	20 \| good	0.781 \| good	1.551 \| good	0.358 \| good
2026-09-07T10:00:00.000Z	19 \| good	1.7 \| good	6 \| good	20 \| good	0.729 \| good	2.014 \| good	0.358 \| good
2026-09-07T11:00:00.000Z	19 \| good	0.8 \| good	4.001 \| good	20 \| good	1.047 \| good	2.283 \| good	0.358 \| good
2026-09-07T11:00:00.000Z	19 \| good	0.8 \| good	4.001 \| good	20 \| good	1.047 \| good	2.283 \| good	0.358 \| good
2026-09-07T12:00:00.000Z	33 \| good	0.959 \| good	3.937 \| good	36.224 \| good	0.304 \| good	1.619 \| good	0.138 \| good
2026-09-07T13:00:00.000Z	25 \| good	4.106 \| good	18 \| good	27.189 \| good	0.309 \| good	1.655 \| good	0.143 \| good
2026-09-07T14:00:00.000Z	31 \| good	4.346 \| good	19 \| good	32.739 \| good	0.292 \| good	1.497 \| good	0.146 \| good
2026-09-07T15:00:00.000Z	33 \| good	6.201 \| good	27.887 \| good	33.904 \| good	0.325 \| good	1.205 \| good	0.148 \| good
2026-09-07T16:00:00.000Z	33 \| good	5.641 \| good	24.05 \| good	34.116 \| good	0.385 \| good	0.89 \| good	0.148 \| good
2026-09-07T17:00:00.000Z	40 \| good	6.302 \| good	28.05 \| good	42.878 \| good	0.43 \| good	0.829 \| good	0.15 \| good
2026-09-07T18:00:00.000Z	49 \| good	8.678 \| good	37.956 \| good	48.749 \| good	0.414 \| good	0.845 \| good	0.15 \| good
2026-09-07T19:00:00.000Z	52 \| moderate	10.143 \| good	44.975 \| good	46.156 \| good	0.371 \| good	0.847 \| good	0.147 \| good
2026-09-07T20:00:00.000Z	41 \| good	6.194 \| good	27.491 \| good	43.902 \| good	0.36 \| good	0.882 \| good	0.15 \| good
2026-09-07T21:00:00.000Z	42 \| good	5.881 \| good	26.008 \| good	45.122 \| good	0.372 \| good	0.91 \| good	0.155 \| good
2026-09-07T22:00:00.000Z	43 \| good	7.19 \| good	32 \| good	45.982 \| good	0.405 \| good	0.904 \| good	0.161 \| good
2026-09-07T23:00:00.000Z	44 \| good	7.77 \| good	34 \| good	38.631 \| good	0.397 \| good	1.119 \| good	0.166 \| good
2026-09-08T00:00:00.000Z	33 \| good	5.889 \| good	25.983 \| good	25.878 \| good	0.474 \| good	1.141 \| good	0.168 \| good
2026-09-08T01:00:00.000Z	31 \| good	3.892 \| good	17.317 \| good	32.54 \| good	0.521 \| good	1.33 \| good	0.17 \| good
2026-09-08T02:00:00.000Z	31 \| good	1.337 \| good	5.433 \| good	33.529 \| good	0.614 \| good	1.377 \| good	0.173 \| good
2026-09-08T03:00:00.000Z	31 \| good	3.132 \| good	13.795 \| good	33.89 \| good	0.681 \| good	1.382 \| good	0.175 \| good
2026-09-08T04:00:00.000Z	29 \| good	1.487 \| good	6 \| good	31.095 \| good	0.654 \| good	1.37 \| good	0.174 \| good
2026-09-08T05:00:00.000Z	28 \| good	1.493 \| good	6 \| good	29.718 \| good	0.581 \| good	1.385 \| good	0.172 \| good
2026-09-08T06:00:00.000Z	31 \| good	2.149 \| good	9 \| good	33.62 \| good	0.536 \| good	1.421 \| good	0.171 \| good
2026-09-08T07:00:00.000Z	33 \| good	0.485 \| good	1.553 \| good	36.211 \| good	0.526 \| good	1.463 \| good	0.172 \| good
2026-09-08T08:00:00.000Z	25 \| good	3.305 \| good	14.824 \| good	26.879 \| good	0.518 \| good	1.502 \| good	0.173 \| good
2026-09-08T09:00:00.000Z	24 \| good	2.319 \| good	9.888 \| good	25.952 \| good	0.465 \| good	1.549 \| good	0.175 \| good
2026-09-08T10:00:00.000Z	22 \| good	3.716 \| good	16 \| good	24.415 \| good	0.37 \| good	1.566 \| good	0.173 \| good
2026-09-08T11:00:00.000Z	22 \| good	4.168 \| good	18.04 \| good	23.755 \| good	0.268 \| good	1.568 \| good	0.163 \| good
2026-09-08T12:00:00.000Z	27 \| good	4.989 \| good	21.386 \| good	22.947 \| good	0.198 \| good	1.685 \| good	0.15 \| good
2026-09-08T13:00:00.000Z	27 \| good	5.29 \| good	22.925 \| good	23.788 \| good	0.149 \| good	1.805 \| good	0.14 \| good
2026-09-08T14:00:00.000Z	29 \| good	4.083 \| good	17.975 \| good	31.308 \| good	0.115 \| good	1.711 \| good	0.133 \| good
2026-09-08T15:00:00.000Z	33 \| good	5.665 \| good	24.112 \| good	30.51 \| good	0.111 \| good	1.27 \| good	0.125 \| good
2026-09-08T16:00:00.000Z	49 \| good	8.571 \| good	37.521 \| good	34.171 \| good	0.121 \| good	0.854 \| good	0.123 \| good
2026-09-08T17:00:00.000Z	54 \| moderate	10.582 \| good	47.108 \| good	36.293 \| good	0.124 \| good	0.616 \| good	0.127 \| good
2026-09-08T18:00:00.000Z	62 \| moderate	14.719 \| fine	65.863 \| fine	36.133 \| good	0.119 \| good	0.457 \| good	0.13 \| good
2026-09-08T19:00:00.000Z	64 \| moderate	15.676 \| fine	69.984 \| fine	37.261 \| good	0.112 \| good	0.367 \| good	0.13 \| good
2026-09-08T20:00:00.000Z	58 \| moderate	13.342 \| fine	60.622 \| fine	40.78 \| good	0.109 \| good	0.321 \| good	0.128 \| good
2026-09-08T21:00:00.000Z	60 \| moderate	13.634 \| fine	61 \| fine	38.154 \| good	0.112 \| good	0.316 \| good	0.127 \| good
2026-09-08T22:00:00.000Z	56 \| moderate	12.095 \| good	53.559 \| good	39.989 \| good	0.118 \| good	0.369 \| good	0.126 \| good
2026-09-08T23:00:00.000Z	44 \| good	7.613 \| good	33.453 \| good	35.024 \| good	0.117 \| good	0.625 \| good	0.127 \| good
2026-09-09T00:00:00.000Z	28 \| good	5.414 \| good	23.517 \| good	29.579 \| good	0.107 \| good	1.33 \| good	0.131 \| good
2026-09-09T01:00:00.000Z	22 \| good	3.346 \| good	14.952 \| good	24.14 \| good	0.109 \| good	2.405 \| good	0.135 \| good
2026-09-09T02:00:00.000Z	27 \| good	4.925 \| good	21.051 \| good	23.312 \| good	0.119 \| good	2.825 \| good	0.136 \| good
2026-09-09T03:00:00.000Z	33 \| good	5.908 \| good	25.872 \| good	22.527 \| good	0.12 \| good	2.738 \| good	0.136 \| good
2026-09-09T04:00:00.000Z	38 \| good	6.952 \| good	30.913 \| good	23.409 \| good	0.113 \| good	2.555 \| good	0.135 \| good
2026-09-09T05:00:00.000Z	49 \| good	8.538 \| good	37.354 \| good	24.088 \| good	0.103 \| good	2.335 \| good	0.135 \| good
2026-09-09T06:00:00.000Z	44 \| good	7.669 \| good	33.933 \| good	24.806 \| good	0.094 \| good	2.206 \| good	0.135 \| good
2026-09-09T07:00:00.000Z	33 \| good	6.021 \| good	27 \| good	23.778 \| good	0.095 \| good	2.23 \| good	0.137 \| good
2026-09-09T08:00:00.000Z	38 \| good	7.4 \| good	32.501 \| good	19.13 \| good	0.111 \| good	2.142 \| good	0.143 \| good
2026-09-09T09:00:00.000Z	44 \| good	7.67 \| good	33.965 \| good	26.517 \| good	0.128 \| good	1.918 \| good	0.147 \| good
2026-09-09T10:00:00.000Z	27 \| good	5.175 \| good	22.042 \| good	14.041 \| good	0.139 \| good	1.621 \| good	0.144 \| good
2026-09-09T11:00:00.000Z	27 \| good	5.35 \| good	23 \| good	14.537 \| good	0.158 \| good	1.432 \| good	0.137 \| good

Watertown

Empower business decisions with accurate air quality data

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

0.32ppm

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 03:00:00 on 2026-09-07.

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 10:00:00 on 2026-09-07.

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

The real-time air quality index in Watertown, South Dakota is 19, currently categorized as Good.

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

The most common pollutant in Watertown, South Dakota is O3.

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 0.8 μg/m³.

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

The current PM₁₀ levels in Watertown, South Dakota are 4.001 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 0.358 ppm.

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

The current sulfur dioxide (SO₂) levels in Watertown, South Dakota are 1.047 ppb.

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

The current ozone (O₃) levels at Watertown, South Dakota is 20 ppm.

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

The current nitrogen dioxide (NO₂) levels at Watertown, South Dakota is 2.283 ppb.

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