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

Watertown, Connecticut currently has a PM10 concentration of 23.907 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Watertown, Connecticut is 0.382 ppb.

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

Watertown, Connecticut currently has an ozone (O3) concentration of 18.008 ppm.

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

The current level of nitrogen dioxide (NO2) in Watertown, Connecticut is 12.292 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)

Common air pollutants in Watertown, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

10.23 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.86 μg/m³

155

255

425

605+

Ozone (O₃)

16.16 ppb

201

201+

Sulfur Dioxide (SO₂)

0.20 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

12.23 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 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
2025-07-28T12:00:00.000Z	67 \| moderate	17.656 \| fine	32.272 \| good	21.736 \| good	0.326 \| good	9.088 \| good	0.261 \| good
2025-07-28T13:00:00.000Z	62 \| moderate	14.581 \| fine	25.682 \| good	20.759 \| good	0.287 \| good	7.216 \| good	0.263 \| good
2025-07-28T14:00:00.000Z	60 \| moderate	14.45 \| fine	25.021 \| good	23.311 \| good	0.298 \| good	4.34 \| good	0.263 \| good
2025-07-28T15:00:00.000Z	54 \| moderate	10.664 \| good	19.885 \| good	22.418 \| good	0.245 \| good	3.708 \| good	0.239 \| good
2025-07-28T16:00:00.000Z	52 \| moderate	9.728 \| good	16.973 \| good	27.889 \| good	0.305 \| good	3.186 \| good	0.17 \| good
2025-07-28T17:00:00.000Z	52 \| moderate	9.554 \| good	16.874 \| good	30.439 \| good	0.322 \| good	3.753 \| good	0.17 \| good
2025-07-28T18:00:00.000Z	52 \| moderate	9.615 \| good	16.246 \| good	36.234 \| good	0.54 \| good	7.905 \| good	0.207 \| good
2025-07-28T19:00:00.000Z	52 \| moderate	9.526 \| good	16.035 \| good	34.887 \| good	0.237 \| good	5.455 \| good	0.17 \| good
2025-07-28T20:00:00.000Z	49 \| good	9.315 \| good	15.534 \| good	39.611 \| good	0.332 \| good	6.124 \| good	0.208 \| good
2025-07-28T21:00:00.000Z	49 \| good	9.262 \| good	15.34 \| good	38.295 \| good	0.263 \| good	2.203 \| good	0.221 \| good
2025-07-28T22:00:00.000Z	52 \| moderate	9.733 \| good	15.534 \| good	37.52 \| good	0.207 \| good	2.178 \| good	0.221 \| good
2025-07-28T23:00:00.000Z	52 \| moderate	10.347 \| good	17.454 \| good	43.144 \| good	0.247 \| good	7.802 \| good	0.208 \| good
2025-07-29T00:00:00.000Z	54 \| moderate	10.948 \| good	17.832 \| good	37.831 \| good	0.312 \| good	6.57 \| good	0.251 \| good
2025-07-29T01:00:00.000Z	54 \| moderate	10.985 \| good	17.874 \| good	38.465 \| good	0.263 \| good	3.633 \| good	0.239 \| good
2025-07-29T02:00:00.000Z	58 \| moderate	12.568 \| fine	20.408 \| good	39.476 \| good	0.353 \| good	9.865 \| good	0.26 \| good
2025-07-29T03:00:00.000Z	58 \| moderate	12.984 \| fine	20.482 \| good	36.914 \| good	0.445 \| good	12.566 \| good	0.319 \| good
2025-07-29T04:00:00.000Z	58 \| moderate	13.26 \| fine	21.471 \| good	34.652 \| good	0.352 \| good	10.327 \| good	0.326 \| good
2025-07-29T05:00:00.000Z	58 \| moderate	13.409 \| fine	21.854 \| good	31.066 \| good	0.874 \| good	13.667 \| good	0.378 \| good
2025-07-29T06:00:00.000Z	60 \| moderate	13.816 \| fine	21.808 \| good	30.446 \| good	0.689 \| good	13.175 \| good	0.294 \| good
2025-07-29T07:00:00.000Z	60 \| moderate	14.056 \| fine	22.355 \| good	14.764 \| good	0.638 \| good	13.87 \| good	0.371 \| good
2025-07-29T08:00:00.000Z	60 \| moderate	14.165 \| fine	22.96 \| good	24.873 \| good	0.607 \| good	12.317 \| good	0.371 \| good
2025-07-29T09:00:00.000Z	60 \| moderate	14.101 \| fine	23.285 \| good	17.048 \| good	0.614 \| good	13.211 \| good	0.294 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	14.362 \| fine	23.577 \| good	16.913 \| good	0.307 \| good	12.101 \| good	0.362 \| good
2025-07-29T11:00:00.000Z	60 \| moderate	14.365 \| fine	23.302 \| good	16.591 \| good	0.273 \| good	11.018 \| good	0.407 \| good
2025-07-29T12:00:00.000Z	60 \| moderate	14.341 \| fine	23.241 \| good	14.599 \| good	0.242 \| good	15.427 \| good	0.468 \| good
2025-07-29T13:00:00.000Z	60 \| moderate	14.419 \| fine	23.231 \| good	17.202 \| good	0.313 \| good	12.412 \| good	0.506 \| good
2025-07-29T14:00:00.000Z	62 \| moderate	15.11 \| fine	34.939 \| good	20.199 \| good	0.43 \| good	12.404 \| good	0.38 \| good
2025-07-29T15:00:00.000Z	62 \| moderate	14.633 \| fine	28.192 \| good	25.287 \| good	0.754 \| good	11.778 \| good	0.398 \| good
2025-07-29T16:00:00.000Z	60 \| moderate	13.892 \| fine	24.611 \| good	31.087 \| good	0.724 \| good	9.288 \| good	0.346 \| good
2025-07-29T17:00:00.000Z	58 \| moderate	12.981 \| fine	22.874 \| good	35.513 \| good	0.574 \| good	7.047 \| good	0.333 \| good
2025-07-29T18:00:00.000Z	58 \| moderate	12.872 \| fine	23.437 \| good	38.626 \| good	0.501 \| good	7.1 \| good	0.466 \| good
2025-07-29T19:00:00.000Z	56 \| moderate	12.184 \| fine	21.258 \| good	43.629 \| good	0.474 \| good	9.009 \| good	0.312 \| good
2025-07-29T20:00:00.000Z	54 \| moderate	11.429 \| good	21.108 \| good	44.461 \| good	0.566 \| good	16.407 \| good	0.286 \| good
2025-07-29T21:00:00.000Z	54 \| moderate	10.918 \| good	19.896 \| good	47.156 \| good	0.613 \| good	14.621 \| good	0.25 \| good
2025-07-29T22:00:00.000Z	52 \| moderate	10.236 \| good	18.307 \| good	47.098 \| good	0.809 \| good	3.071 \| good	0.248 \| good
2025-07-29T23:00:00.000Z	52 \| moderate	10.081 \| good	17.903 \| good	44.029 \| good	0.87 \| good	3.069 \| good	0.266 \| good
2025-07-30T00:00:00.000Z	52 \| moderate	9.997 \| good	17.404 \| good	40.064 \| good	0.809 \| good	4.288 \| good	0.258 \| good
2025-07-30T01:00:00.000Z	52 \| moderate	10.093 \| good	17.587 \| good	47.899 \| good	0.513 \| good	4.422 \| good	0.22 \| good
2025-07-30T02:00:00.000Z	54 \| moderate	10.556 \| good	18.255 \| good	39.139 \| good	0.607 \| good	8.116 \| good	0.269 \| good
2025-07-30T03:00:00.000Z	69 \| moderate	18.682 \| fine	82.685 \| fine	26.752 \| good	0.75 \| good	9.676 \| good	0.269 \| good
2025-07-30T04:00:00.000Z	56 \| moderate	12.075 \| good	20.733 \| good	37.463 \| good	0.433 \| good	21.036 \| good	0.244 \| good
2025-07-30T05:00:00.000Z	56 \| moderate	11.76 \| good	21.113 \| good	43.376 \| good	0.475 \| good	18.539 \| good	0.242 \| good
2025-07-30T06:00:00.000Z	56 \| moderate	11.572 \| good	20.994 \| good	42.089 \| good	0.392 \| good	15.145 \| good	0.247 \| good
2025-07-30T07:00:00.000Z	56 \| moderate	11.585 \| good	20.114 \| good	37.309 \| good	0.27 \| good	13.291 \| good	0.233 \| good
2025-07-30T08:00:00.000Z	54 \| moderate	11.155 \| good	18.936 \| good	37.657 \| good	0.265 \| good	14.603 \| good	0.233 \| good
2025-07-30T09:00:00.000Z	54 \| moderate	10.769 \| good	17.808 \| good	24.391 \| good	0.217 \| good	11.336 \| good	0.208 \| good
2025-07-30T10:00:00.000Z	52 \| moderate	10.372 \| good	18.413 \| good	15.141 \| good	0.191 \| good	12.9 \| good	0.265 \| good
2025-07-30T11:00:00.000Z	52 \| moderate	10.234 \| good	17.864 \| good	16.162 \| good	0.201 \| good	12.229 \| good	0.258 \| good
2025-07-29T14:00:00.000Z	84 \| moderate	26.83 \| fine	116.991 \| fine	46.163 \| good	0.44 \| good	2.308 \| good	0.248 \| good
2025-07-29T15:00:00.000Z	81 \| moderate	25.146 \| fine	109.026 \| fine	49.809 \| good	0.42 \| good	1.114 \| good	0.208 \| good
2025-07-29T16:00:00.000Z	81 \| moderate	25.249 \| fine	110.979 \| fine	52.916 \| good	0.444 \| good	0.989 \| good	0.195 \| good
2025-07-29T17:00:00.000Z	82 \| moderate	25.986 \| fine	112.997 \| fine	53.023 \| good	0.468 \| good	0.863 \| good	0.183 \| good
2025-07-29T18:00:00.000Z	79 \| moderate	24.072 \| fine	105 \| fine	50.39 \| good	0.491 \| good	0.738 \| good	0.17 \| good
2025-07-29T19:00:00.000Z	75 \| moderate	21.609 \| fine	94.998 \| fine	49.667 \| good	0.47 \| good	0.813 \| good	0.166 \| good
2025-07-29T20:00:00.000Z	67 \| moderate	17.611 \| fine	78.984 \| fine	47.102 \| good	0.448 \| good	0.888 \| good	0.162 \| good
2025-07-29T21:00:00.000Z	66 \| moderate	16.505 \| fine	73.01 \| fine	43.103 \| good	0.427 \| good	0.963 \| good	0.158 \| good
2025-07-29T22:00:00.000Z	64 \| moderate	16.164 \| fine	71.001 \| fine	39.4 \| good	0.441 \| good	2.493 \| good	0.176 \| good
2025-07-29T23:00:00.000Z	64 \| moderate	16.18 \| fine	71.03 \| fine	35.595 \| good	0.455 \| good	4.022 \| good	0.193 \| good
2025-07-30T00:00:00.000Z	58 \| moderate	13.461 \| fine	60.982 \| fine	38.882 \| good	0.468 \| good	5.551 \| good	0.21 \| good
2025-07-30T01:00:00.000Z	60 \| moderate	14.14 \| fine	62.996 \| fine	36.398 \| good	0.51 \| good	7.445 \| good	0.233 \| good
2025-07-30T02:00:00.000Z	60 \| moderate	14.362 \| fine	64.981 \| fine	33.581 \| good	0.551 \| good	9.339 \| good	0.256 \| good
2025-07-30T03:00:00.000Z	66 \| moderate	16.885 \| fine	75.002 \| fine	31.592 \| good	0.592 \| good	11.233 \| good	0.279 \| good
2025-07-30T04:00:00.000Z	69 \| moderate	18.843 \| fine	83.03 \| fine	29.799 \| good	0.563 \| good	11.615 \| good	0.286 \| good
2025-07-30T05:00:00.000Z	73 \| moderate	20.565 \| fine	91.008 \| fine	29.737 \| good	0.533 \| good	11.996 \| good	0.293 \| good
2025-07-30T06:00:00.000Z	75 \| moderate	22.004 \| fine	97.008 \| fine	28.021 \| good	0.504 \| good	12.378 \| good	0.3 \| good
2025-07-30T07:00:00.000Z	75 \| moderate	22.404 \| fine	99.003 \| fine	26.13 \| good	0.486 \| good	11.201 \| good	0.288 \| good
2025-07-30T08:00:00.000Z	75 \| moderate	21.926 \| fine	97.004 \| fine	23.669 \| good	0.468 \| good	10.025 \| good	0.275 \| good
2025-07-30T09:00:00.000Z	81 \| moderate	24.563 \| fine	107.014 \| fine	20.747 \| good	0.45 \| good	8.848 \| good	0.262 \| good
2025-07-30T10:00:00.000Z	79 \| moderate	24.321 \| fine	106.977 \| fine	19.739 \| good	0.461 \| good	8.099 \| good	0.278 \| good
2025-07-30T11:00:00.000Z	88 \| moderate	29.362 \| fine	127.014 \| fine	22.84 \| good	0.472 \| good	7.349 \| good	0.293 \| good
2025-07-30T12:00:00.000Z	99 \| moderate	34.879 \| fine	150.986 \| fine	29.894 \| good	0.483 \| good	6.599 \| good	0.309 \| good
2025-07-30T13:00:00.000Z	102 \| sensitive	35.836 \| moderate	156.939 \| moderate	37.818 \| good	0.905 \| good	5.003 \| good	0.281 \| good
2025-07-30T14:00:00.000Z	94 \| moderate	31.682 \| fine	137.002 \| fine	46.024 \| good	1.327 \| good	3.407 \| good	0.253 \| good
2025-07-30T15:00:00.000Z	84 \| moderate	26.943 \| fine	116.998 \| fine	51.783 \| good	1.749 \| good	1.811 \| good	0.224 \| good
2025-07-30T16:00:00.000Z	77 \| moderate	22.964 \| fine	100.986 \| fine	56.408 \| fine	1.794 \| good	1.547 \| good	0.216 \| good
2025-07-30T17:00:00.000Z	75 \| moderate	22.014 \| fine	96.981 \| fine	56.366 \| fine	1.839 \| good	1.283 \| good	0.207 \| good
2025-07-30T18:00:00.000Z	73 \| moderate	20.546 \| fine	90.999 \| fine	55.918 \| fine	1.884 \| good	1.019 \| good	0.199 \| good
2025-07-30T19:00:00.000Z	84 \| moderate	21.063 \| fine	92.984 \| fine	65.26 \| fine	1.8 \| good	1.075 \| good	0.196 \| good
2025-07-30T20:00:00.000Z	129 \| sensitive	25.039 \| fine	108.977 \| fine	78.804 \| moderate	1.716 \| good	1.132 \| good	0.194 \| good
2025-07-30T21:00:00.000Z	101 \| sensitive	27.993 \| fine	120.957 \| fine	70.685 \| fine	1.631 \| good	1.189 \| good	0.191 \| good
2025-07-30T22:00:00.000Z	75 \| moderate	22.4 \| fine	98.971 \| fine	55.201 \| fine	1.66 \| good	2.351 \| good	0.21 \| good
2025-07-30T23:00:00.000Z	75 \| moderate	21.906 \| fine	96.971 \| fine	52.258 \| good	1.689 \| good	3.513 \| good	0.228 \| good
2025-07-31T00:00:00.000Z	73 \| moderate	21.185 \| fine	92.986 \| fine	57.905 \| fine	1.717 \| good	4.675 \| good	0.246 \| good
2025-07-31T01:00:00.000Z	71 \| moderate	17.495 \| fine	77.02 \| fine	61.257 \| fine	1.739 \| good	5.604 \| good	0.262 \| good
2025-07-31T02:00:00.000Z	64 \| moderate	14.506 \| fine	65.011 \| fine	58.573 \| fine	1.761 \| good	6.534 \| good	0.277 \| good
2025-07-31T03:00:00.000Z	64 \| moderate	16.107 \| fine	71.024 \| fine	51.643 \| good	1.783 \| good	7.463 \| good	0.292 \| good
2025-07-31T04:00:00.000Z	64 \| moderate	16.243 \| fine	72.983 \| fine	46.55 \| good	1.726 \| good	7.529 \| good	0.296 \| good
2025-07-31T05:00:00.000Z	60 \| moderate	14.324 \| fine	65 \| fine	43.417 \| good	1.669 \| good	7.594 \| good	0.299 \| good
2025-07-31T06:00:00.000Z	66 \| moderate	16.526 \| fine	17.175 \| good	42.75 \| good	1.609 \| good	7.649 \| good	0.302 \| good
2025-07-31T07:00:00.000Z	62 \| moderate	15.286 \| fine	68.983 \| fine	35.481 \| good	1.367 \| good	6.214 \| good	0.273 \| good
2025-07-31T08:00:00.000Z	60 \| moderate	14.444 \| fine	65.004 \| fine	29.507 \| good	1.122 \| good	4.769 \| good	0.243 \| good
2025-07-31T09:00:00.000Z	62 \| moderate	15.044 \| fine	67.028 \| fine	26.318 \| good	0.876 \| good	3.324 \| good	0.213 \| good
2025-07-31T10:00:00.000Z	62 \| moderate	15.285 \| fine	69.001 \| fine	26.197 \| good	0.723 \| good	2.8 \| good	0.193 \| good
2025-07-31T11:00:00.000Z	67 \| moderate	17.809 \| fine	79.003 \| fine	26.496 \| good	0.57 \| good	2.276 \| good	0.173 \| good
2025-07-31T12:00:00.000Z	40 \| good	5.47 \| good	6.17 \| good	42.932 \| good	0.418 \| good	1.758 \| good	0.153 \| good
2025-07-31T13:00:00.000Z	44 \| good	6.024 \| good	6.965 \| good	46.579 \| good	0.408 \| good	1.664 \| good	0.154 \| good

Watertown

Empower business decisions with accurate air quality data

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

0.45ppm

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 12:00:00, 2025-07-29.

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

The best air quality in Watertown, Connecticut was observed at 09:00:00 on 2025-07-28.

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

The air quality in Watertown, Connecticut right now is Moderate, with an AQI of 60.

What pollutant is most frequently found in Watertown, Connecticut?

In Watertown, Connecticut, PM2.5 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 14.466 μg/m³.

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

Watertown, Connecticut currently has a PM₁₀ concentration of 23.907 μg/m³.

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

The current carbon monoxide (CO) level in Watertown, Connecticut is 0.482 ppm.

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

The current sulfur dioxide (SO₂) concentration in Watertown, Connecticut is 0.382 ppb.

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

Watertown, Connecticut currently has an ozone (O₃) concentration of 18.008 ppm.

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

The current level of nitrogen dioxide (NO₂) in Watertown, Connecticut is 12.292 ppb.

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