What is the current level of PM10 in Watertown, Connecticut?

Watertown, Connecticut currently has a PM10 concentration of 39.182 μg/m3.

What is the current level of sulfur dioxide (SO2) in Watertown, Connecticut?

The current sulfur dioxide (SO2) concentration in Watertown, Connecticut is 0.412 ppb.

What is the current level of ozone (O3) in Watertown, Connecticut?

Watertown, Connecticut currently has an ozone (O3) concentration of 69.411 ppm.

What is the current level of nitrogen dioxide (NO2) in Watertown, Connecticut?

The current level of nitrogen dioxide (NO2) in Watertown, Connecticut is 8.689 ppb.

Current air quality index in Watertown, Connecticut today

Name: Live air pollution levels in Watertown, Connecticut today
Creator: Ambee

Stay updated with real-time air quality in Watertown, Connecticut 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, Connecticut

Last updated: ... (Local time)

Major air pollutants in Watertown, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

20.69 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

39.18 μg/m³

155

255

425

605+

Ozone (O₃)

69.41 ppb

201

201+

Sulfur Dioxide (SO₂)

0.41 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.69 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 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, Connecticut

Scroll To Air Quality Map

Track live Watertown, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T22:00:00.000Z	115 \| sensitive	10.756 \| good	26.033 \| good	75.306 \| moderate	0.389 \| good	14.079 \| good	0.248 \| good
2025-06-04T23:00:00.000Z	90 \| moderate	10.786 \| good	24.658 \| good	67.289 \| fine	0.401 \| good	12.47 \| good	0.268 \| good
2025-06-05T00:00:00.000Z	87 \| moderate	10.654 \| good	23.96 \| good	66.248 \| fine	0.485 \| good	9.799 \| good	0.256 \| good
2025-06-05T01:00:00.000Z	80 \| moderate	10.54 \| good	23.371 \| good	64.323 \| fine	0.336 \| good	14.922 \| good	0.291 \| good
2025-06-05T02:00:00.000Z	64 \| moderate	10.588 \| good	22.288 \| good	58.891 \| fine	0.293 \| good	10.747 \| good	0.264 \| good
2025-06-05T03:00:00.000Z	58 \| moderate	10.86 \| good	22.642 \| good	57.026 \| fine	0.255 \| good	8.855 \| good	0.233 \| good
2025-06-05T04:00:00.000Z	54 \| moderate	11.384 \| good	27.232 \| good	56.4 \| fine	0.246 \| good	9.732 \| good	0.205 \| good
2025-06-05T05:00:00.000Z	54 \| moderate	11.289 \| good	22.673 \| good	53.412 \| good	0.514 \| good	9.689 \| good	0.185 \| good
2025-06-05T06:00:00.000Z	56 \| moderate	11.805 \| good	21.879 \| good	54.683 \| good	0.638 \| good	14.114 \| good	0.214 \| good
2025-06-05T07:00:00.000Z	58 \| moderate	12.906 \| fine	28.249 \| good	53.155 \| good	0.295 \| good	13.213 \| good	0.214 \| good
2025-06-05T08:00:00.000Z	58 \| moderate	13.093 \| fine	25.995 \| good	50.312 \| good	0.279 \| good	15.865 \| good	0.214 \| good
2025-06-05T09:00:00.000Z	60 \| moderate	13.901 \| fine	31.599 \| good	44.797 \| good	0.454 \| good	17.647 \| good	0.214 \| good
2025-06-05T10:00:00.000Z	60 \| moderate	14.076 \| fine	31.991 \| good	39.624 \| good	0.462 \| good	13.684 \| good	0.241 \| good
2025-06-05T11:00:00.000Z	60 \| moderate	14.336 \| fine	29.838 \| good	39.152 \| good	0.2 \| good	18.38 \| good	0.33 \| good
2025-06-05T12:00:00.000Z	62 \| moderate	15.095 \| fine	29.355 \| good	34.232 \| good	0.46 \| good	17.826 \| good	0.388 \| good
2025-06-05T13:00:00.000Z	66 \| moderate	16.675 \| fine	33.025 \| good	32.944 \| good	0.393 \| good	18.316 \| good	0.41 \| good
2025-06-05T14:00:00.000Z	67 \| moderate	18.012 \| fine	36.885 \| good	33.357 \| good	0.447 \| good	18.446 \| good	0.334 \| good
2025-06-05T15:00:00.000Z	69 \| moderate	18.551 \| fine	35.867 \| good	41.113 \| good	0.995 \| good	17.982 \| good	0.363 \| good
2025-06-05T16:00:00.000Z	69 \| moderate	18.97 \| fine	37.276 \| good	38.994 \| good	0.998 \| good	23.088 \| good	0.377 \| good
2025-06-05T17:00:00.000Z	69 \| moderate	19.057 \| fine	34.484 \| good	56.042 \| fine	0.715 \| good	20.02 \| good	0.361 \| good
2025-06-05T18:00:00.000Z	69 \| moderate	19.07 \| fine	31.421 \| good	55.119 \| fine	0.794 \| good	17.485 \| good	0.346 \| good
2025-06-05T19:00:00.000Z	71 \| moderate	19.321 \| fine	32.829 \| good	61.334 \| fine	0.877 \| good	23.834 \| good	0.353 \| good
2025-06-05T20:00:00.000Z	100 \| moderate	20.398 \| fine	38.876 \| good	69.928 \| fine	0.811 \| good	21.882 \| good	0.403 \| good
2025-06-05T21:00:00.000Z	97 \| moderate	20.781 \| fine	37.731 \| good	68.961 \| fine	0.633 \| good	15.883 \| good	0.369 \| good
2025-06-05T22:00:00.000Z	133 \| sensitive	21.106 \| fine	36.96 \| good	79.905 \| moderate	0.535 \| good	20.656 \| good	0.381 \| good
2025-06-05T23:00:00.000Z	108 \| sensitive	20.888 \| fine	35.886 \| good	72.794 \| moderate	0.565 \| good	19.331 \| good	0.367 \| good
2025-06-06T00:00:00.000Z	100 \| moderate	20.695 \| fine	34.648 \| good	70.126 \| fine	0.424 \| good	22.075 \| good	0.389 \| good
2025-06-06T01:00:00.000Z	108 \| sensitive	20.289 \| fine	32.766 \| good	73.389 \| moderate	0.576 \| good	14.918 \| good	0.339 \| good
2025-06-06T02:00:00.000Z	71 \| moderate	19.919 \| fine	32.24 \| good	60.514 \| fine	0.802 \| good	14.723 \| good	0.313 \| good
2025-06-06T03:00:00.000Z	93 \| moderate	19.258 \| fine	31.665 \| good	68.467 \| fine	0.639 \| good	12.728 \| good	0.313 \| good
2025-06-06T04:00:00.000Z	69 \| moderate	19.255 \| fine	35.88 \| good	58.967 \| fine	0.421 \| good	21.035 \| good	0.27 \| good
2025-06-06T05:00:00.000Z	69 \| moderate	19.45 \| fine	40.367 \| good	56.748 \| fine	0.322 \| good	15.573 \| good	0.25 \| good
2025-06-06T06:00:00.000Z	69 \| moderate	19.295 \| fine	38.025 \| good	44.559 \| good	0.425 \| good	15.545 \| good	0.201 \| good
2025-06-06T07:00:00.000Z	69 \| moderate	19.308 \| fine	36.25 \| good	47.627 \| good	0.487 \| good	16.174 \| good	0.192 \| good
2025-06-06T08:00:00.000Z	69 \| moderate	19.196 \| fine	38.238 \| good	40.47 \| good	0.455 \| good	15.929 \| good	0.193 \| good
2025-06-06T09:00:00.000Z	69 \| moderate	19.009 \| fine	33.819 \| good	36.895 \| good	0.603 \| good	10.093 \| good	0.193 \| good
2025-06-06T10:00:00.000Z	69 \| moderate	19.192 \| fine	32.993 \| good	34.348 \| good	0.577 \| good	11.444 \| good	0.192 \| good
2025-06-06T11:00:00.000Z	69 \| moderate	19.094 \| fine	32.183 \| good	24.728 \| good	0.378 \| good	15.323 \| good	0.27 \| good
2025-06-06T12:00:00.000Z	69 \| moderate	19.28 \| fine	33.602 \| good	31.398 \| good	0.577 \| good	13.708 \| good	0.325 \| good
2025-06-06T13:00:00.000Z	66 \| moderate	16.557 \| fine	25.707 \| good	28.563 \| good	0.462 \| good	9.261 \| good	0.287 \| good
2025-06-06T14:00:00.000Z	64 \| moderate	16.052 \| fine	25.014 \| good	38.395 \| good	0.373 \| good	7.15 \| good	0.271 \| good
2025-06-06T15:00:00.000Z	64 \| moderate	16.413 \| fine	26.014 \| good	35.526 \| good	0.323 \| good	6.391 \| good	0.313 \| good
2025-06-06T16:00:00.000Z	66 \| moderate	17.172 \| fine	27.809 \| good	45.25 \| good	0.373 \| good	6.729 \| good	0.314 \| good
2025-06-06T17:00:00.000Z	67 \| moderate	17.933 \| fine	28.688 \| good	46.979 \| good	0.366 \| good	8.42 \| good	0.334 \| good
2025-06-06T18:00:00.000Z	69 \| moderate	19.362 \| fine	31.481 \| good	59.371 \| fine	0.418 \| good	10.451 \| good	0.334 \| good
2025-06-06T19:00:00.000Z	90 \| moderate	20.319 \| fine	35.037 \| good	67.471 \| fine	0.406 \| good	8.405 \| good	0.319 \| good
2025-06-06T20:00:00.000Z	97 \| moderate	20.694 \| fine	39.182 \| good	69.411 \| fine	0.412 \| good	8.689 \| good	0.299 \| good
2025-06-06T21:00:00.000Z	101 \| sensitive	20.322 \| fine	36.901 \| good	70.641 \| fine	0.46 \| good	9.836 \| good	0.326 \| good
2025-06-06T21:00:00.000Z	97 \| moderate	20.694 \| fine	39.182 \| good	69.411 \| fine	0.412 \| good	8.689 \| good	0.299 \| good
2025-06-06T22:00:00.000Z	61 \| moderate	13.132 \| fine	58.991 \| fine	57.776 \| fine	1.102 \| good	6.745 \| good	0.252 \| good
2025-06-06T23:00:00.000Z	64 \| moderate	11.616 \| good	51.012 \| good	58.691 \| fine	1.068 \| good	6.579 \| good	0.238 \| good
2025-06-07T00:00:00.000Z	61 \| moderate	7.707 \| good	33.993 \| good	58.251 \| fine	1.034 \| good	6.413 \| good	0.225 \| good
2025-06-07T01:00:00.000Z	58 \| moderate	7.85 \| good	34.006 \| good	57.086 \| fine	0.626 \| good	6.377 \| good	0.155 \| good
2025-06-07T02:00:00.000Z	49 \| good	7.299 \| good	32.005 \| good	53.198 \| good	0.542 \| good	5.609 \| good	0.149 \| good
2025-06-07T03:00:00.000Z	47 \| good	6.828 \| good	30.017 \| good	50.551 \| good	0.458 \| good	4.842 \| good	0.143 \| good
2025-06-07T04:00:00.000Z	41 \| good	6.976 \| good	30.99 \| good	44.358 \| good	0.544 \| good	6.144 \| good	0.146 \| good
2025-06-07T05:00:00.000Z	38 \| good	7.008 \| good	30.997 \| good	33.948 \| good	0.43 \| good	5.463 \| good	0.142 \| good
2025-06-07T06:00:00.000Z	44 \| good	7.531 \| good	32.995 \| good	28.686 \| good	0.317 \| good	4.783 \| good	0.137 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.287 \| good	32.003 \| good	26.425 \| good	0.746 \| good	5.527 \| good	0.156 \| good
2025-06-07T08:00:00.000Z	44 \| good	8.216 \| good	35.995 \| good	26.338 \| good	0.644 \| good	5.019 \| good	0.148 \| good
2025-06-07T09:00:00.000Z	44 \| good	7.842 \| good	34.014 \| good	22.957 \| good	0.541 \| good	4.511 \| good	0.14 \| good
2025-06-07T10:00:00.000Z	44 \| good	8.373 \| good	36.992 \| good	23.15 \| good	0.709 \| good	4.655 \| good	0.165 \| good
2025-06-07T11:00:00.000Z	38 \| good	7.455 \| good	32.997 \| good	25.621 \| good	0.675 \| good	4.519 \| good	0.159 \| good
2025-06-07T12:00:00.000Z	49 \| good	8.817 \| good	38.984 \| good	28.373 \| good	0.641 \| good	4.384 \| good	0.153 \| good
2025-06-07T13:00:00.000Z	49 \| good	8.663 \| good	37.992 \| good	31.246 \| good	0.495 \| good	3.339 \| good	0.183 \| good
2025-06-07T14:00:00.000Z	44 \| good	8.057 \| good	35.01 \| good	34.938 \| good	0.45 \| good	3.274 \| good	0.175 \| good
2025-06-07T15:00:00.000Z	44 \| good	7.901 \| good	34.018 \| good	39.777 \| good	0.405 \| good	3.209 \| good	0.167 \| good
2025-06-07T16:00:00.000Z	44 \| good	7.756 \| good	34 \| good	43.034 \| good	0.207 \| good	1.3 \| good	0.203 \| good
2025-06-07T17:00:00.000Z	42 \| good	7.416 \| good	32.982 \| good	44.847 \| good	0.238 \| good	1.458 \| good	0.198 \| good
2025-06-07T18:00:00.000Z	39 \| good	6.666 \| good	29.995 \| good	42.051 \| good	0.268 \| good	1.616 \| good	0.194 \| good
2025-06-07T19:00:00.000Z	42 \| good	6.377 \| good	28.008 \| good	44.539 \| good	0.128 \| good	1.201 \| good	0.217 \| good
2025-06-07T20:00:00.000Z	44 \| good	6.256 \| good	27.995 \| good	46.888 \| good	0.129 \| good	1.359 \| good	0.217 \| good
2025-06-07T21:00:00.000Z	43 \| good	6.738 \| good	30.005 \| good	45.738 \| good	0.129 \| good	1.517 \| good	0.217 \| good
2025-06-07T22:00:00.000Z	44 \| good	8.363 \| good	36.989 \| good	47.422 \| good	0.267 \| good	3.445 \| good	0.264 \| good
2025-06-07T23:00:00.000Z	52 \| moderate	10.221 \| good	45.016 \| good	46.292 \| good	0.292 \| good	3.513 \| good	0.264 \| good
2025-06-08T00:00:00.000Z	44 \| good	8.065 \| good	35.02 \| good	41.68 \| good	0.317 \| good	3.581 \| good	0.263 \| good
2025-06-08T01:00:00.000Z	56 \| moderate	12.285 \| fine	55.008 \| fine	37.147 \| good	0.483 \| good	4.163 \| good	0.311 \| good
2025-06-08T02:00:00.000Z	66 \| moderate	17.033 \| fine	75.009 \| fine	35.486 \| good	0.48 \| good	4.182 \| good	0.31 \| good
2025-06-08T03:00:00.000Z	66 \| moderate	17.111 \| fine	76.958 \| fine	33.109 \| good	0.477 \| good	4.202 \| good	0.309 \| good
2025-06-08T04:00:00.000Z	62 \| moderate	14.527 \| fine	64.991 \| fine	30.908 \| good	0.521 \| good	2.977 \| good	0.293 \| good
2025-06-08T05:00:00.000Z	56 \| moderate	12.18 \| fine	54.976 \| good	29.282 \| good	0.49 \| good	2.8 \| good	0.292 \| good
2025-06-08T06:00:00.000Z	56 \| moderate	11.571 \| good	50.989 \| good	26.646 \| good	0.458 \| good	2.624 \| good	0.291 \| good
2025-06-08T07:00:00.000Z	52 \| moderate	10.48 \| good	46.011 \| good	24.767 \| good	0.567 \| good	2.424 \| good	0.261 \| good
2025-06-08T08:00:00.000Z	54 \| moderate	11.064 \| good	48.99 \| good	21.393 \| good	0.536 \| good	2.212 \| good	0.26 \| good
2025-06-08T09:00:00.000Z	56 \| moderate	11.775 \| good	52.006 \| good	19.72 \| good	0.505 \| good	1.999 \| good	0.26 \| good
2025-06-08T10:00:00.000Z	56 \| moderate	11.933 \| good	53.983 \| good	18.277 \| good	0.557 \| good	2.078 \| good	0.257 \| good
2025-06-08T11:00:00.000Z	56 \| moderate	11.605 \| good	51.002 \| good	22.01 \| good	0.542 \| good	2.07 \| good	0.259 \| good
2025-06-08T12:00:00.000Z	54 \| moderate	11.051 \| good	48.995 \| good	27.6 \| good	0.527 \| good	2.062 \| good	0.261 \| good
2025-06-08T13:00:00.000Z	49 \| good	8.695 \| good	38.001 \| good	31.754 \| good	0.424 \| good	1.553 \| good	0.271 \| good
2025-06-08T14:00:00.000Z	38 \| good	7.365 \| good	32.011 \| good	35.059 \| good	0.403 \| good	1.672 \| good	0.275 \| good
2025-06-08T15:00:00.000Z	38 \| good	7.329 \| good	32.013 \| good	36.52 \| good	0.382 \| good	1.79 \| good	0.279 \| good
2025-06-08T16:00:00.000Z	38 \| good	6.938 \| good	31.002 \| good	36.934 \| good	0.281 \| good	1.058 \| good	0.274 \| good
2025-06-08T17:00:00.000Z	35 \| good	6.335 \| good	28.008 \| good	37.569 \| good	0.298 \| good	1.117 \| good	0.274 \| good
2025-06-08T18:00:00.000Z	49 \| good	9.14 \| good	40.98 \| good	40.995 \| good	0.315 \| good	1.177 \| good	0.274 \| good
2025-06-08T19:00:00.000Z	56 \| moderate	12.458 \| fine	56.965 \| fine	45.536 \| good	0.35 \| good	3.2 \| good	0.284 \| good
2025-06-08T20:00:00.000Z	56 \| moderate	11.922 \| good	53.977 \| good	45.402 \| good	0.381 \| good	3.273 \| good	0.281 \| good
2025-06-08T21:00:00.000Z	56 \| moderate	11.75 \| good	52.007 \| good	47.965 \| good	0.412 \| good	3.347 \| good	0.277 \| good

Watertown

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Watertown, Connecticut

0.31ppm

How accurate is Connecticut, USA air quality data?

The air quality data for Connecticut, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for Watertown, Connecticut get updated?

Air quality updates for Watertown, Connecticut are available every hour.

What time in the past 24 hours saw the poorest air quality in Watertown, Connecticut?

Watertown, Connecticut experienced its worst air quality at 10:00:00, 2025-06-05.

When was air quality in Watertown, Connecticut the best over the past 24 hours?

The best air quality in Watertown, Connecticut was observed at 03:00:00 on 2025-06-06.

What is the air quality in Watertown, Connecticut right now?

The air quality in Watertown, Connecticut right now is Moderate, with an AQI of 97.

What pollutant is most frequently found in Watertown, Connecticut?

In Watertown, Connecticut, O3 is the most frequently found pollutant.

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

When air quality in Watertown, Connecticut is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Watertown, Connecticut right now?

Watertown, Connecticut currently has a PM_2.5 concentration of 20.694 μg/m³.

What is the current level of PM₁₀ in Watertown, Connecticut?

Watertown, Connecticut currently has a PM₁₀ concentration of 39.182 μg/m³.

What is the current level of carbon monoxide (CO) in Watertown, Connecticut?

The current carbon monoxide (CO) level in Watertown, Connecticut is 0.299 ppm.

What is the current level of sulfur dioxide (SO₂) in Watertown, Connecticut?

The current sulfur dioxide (SO₂) concentration in Watertown, Connecticut is 0.412 ppb.

What is the current level of ozone (O₃) in Watertown, Connecticut?

Watertown, Connecticut currently has an ozone (O₃) concentration of 69.411 ppm.

What is the current level of nitrogen dioxide (NO₂) in Watertown, Connecticut?

The current level of nitrogen dioxide (NO₂) in Watertown, Connecticut is 8.689 ppb.

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