What is the sulfur dioxide (SO2) level in Stamford, Connecticut at the moment?

Currently, Stamford, Connecticut has a sulfur dioxide (SO2) concentration of 1.821 ppb.

What is the ozone (O3) level in Stamford, Connecticut at the moment?

The current ozone (O3) level in Stamford, Connecticut at the moment is 86.251 ppm.

What is the nitrogen dioxide (NO2) level in Stamford, Connecticut at the moment?

Nitrogen dioxide (NO2) level in Stamford, Connecticut at the moment is 3.084 ppb.

Live air quality index in Stamford, Connecticut today

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

Stay updated with real-time air quality in Stamford, 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

Stamford, Connecticut

Last updated: ... (Local time)

Major air pollutants in Stamford, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

14.59 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

65.15 μg/m³

155

255

425

605+

Ozone (O₃)

29.05 ppb

201

201+

Sulfur Dioxide (SO₂)

1.18 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

25.02 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Stamford, Connecticut

Get Live Pollen Counts

Stamford, Connecticut

Scroll To Air Quality Map

Track live Stamford, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T12:00:00.000Z	38 \| good	7.429 \| good	30.487 \| good	24.844 \| good	0.646 \| good	16.488 \| good	0.377 \| good
2025-07-28T13:00:00.000Z	52 \| moderate	10.242 \| good	43.388 \| good	29.29 \| good	0.462 \| good	8.418 \| good	0.394 \| good
2025-07-28T14:00:00.000Z	52 \| moderate	10.421 \| good	46.259 \| good	29.773 \| good	0.446 \| good	10.643 \| good	0.384 \| good
2025-07-28T15:00:00.000Z	52 \| moderate	9.546 \| good	27.552 \| good	29.683 \| good	0.409 \| good	12.403 \| good	0.291 \| good
2025-07-28T16:00:00.000Z	44 \| good	8.46 \| good	32.11 \| good	38.017 \| good	0.496 \| good	9.439 \| good	0.236 \| good
2025-07-28T17:00:00.000Z	49 \| good	9.366 \| good	40.253 \| good	38.915 \| good	0.523 \| good	6.196 \| good	0.237 \| good
2025-07-28T18:00:00.000Z	54 \| moderate	10.781 \| good	48.936 \| good	45.567 \| good	0.595 \| good	6.265 \| good	0.253 \| good
2025-07-28T19:00:00.000Z	54 \| moderate	11.452 \| good	50.324 \| good	49.475 \| good	0.382 \| good	4.536 \| good	0.237 \| good
2025-07-28T20:00:00.000Z	56 \| moderate	11.563 \| good	42.034 \| good	52.472 \| good	0.463 \| good	4.95 \| good	0.26 \| good
2025-07-28T21:00:00.000Z	50 \| good	8.663 \| good	36.489 \| good	53.663 \| good	0.515 \| good	4.66 \| good	0.267 \| good
2025-07-28T22:00:00.000Z	49 \| good	8.545 \| good	28.043 \| good	48.938 \| good	0.397 \| good	5.423 \| good	0.267 \| good
2025-07-28T23:00:00.000Z	54 \| moderate	10.64 \| good	45.963 \| good	47.456 \| good	0.431 \| good	7.097 \| good	0.276 \| good
2025-07-29T00:00:00.000Z	52 \| moderate	10.054 \| good	35.936 \| good	45.297 \| good	0.47 \| good	3.903 \| good	0.33 \| good
2025-07-29T01:00:00.000Z	56 \| moderate	12.307 \| fine	34.521 \| good	44.032 \| good	0.452 \| good	3.839 \| good	0.327 \| good
2025-07-29T02:00:00.000Z	60 \| moderate	14.349 \| fine	36.27 \| good	34.238 \| good	0.542 \| good	13.942 \| good	0.389 \| good
2025-07-29T03:00:00.000Z	58 \| moderate	12.695 \| fine	50.264 \| good	32.922 \| good	0.84 \| good	10.439 \| good	0.422 \| good
2025-07-29T04:00:00.000Z	62 \| moderate	14.784 \| fine	53.302 \| good	32.922 \| good	0.708 \| good	11.96 \| good	0.451 \| good
2025-07-29T05:00:00.000Z	60 \| moderate	13.744 \| fine	38.843 \| good	33.057 \| good	1.111 \| good	15.675 \| good	0.491 \| good
2025-07-29T06:00:00.000Z	62 \| moderate	15.491 \| fine	66.054 \| fine	24.383 \| good	1.194 \| good	16.505 \| good	0.427 \| good
2025-07-29T07:00:00.000Z	64 \| moderate	15.535 \| fine	61.969 \| fine	19.512 \| good	1.214 \| good	12.622 \| good	0.481 \| good
2025-07-29T08:00:00.000Z	60 \| moderate	14.248 \| fine	63.012 \| fine	16.918 \| good	1.209 \| good	13.262 \| good	0.481 \| good
2025-07-29T09:00:00.000Z	60 \| moderate	13.547 \| fine	56.517 \| fine	15.812 \| good	1.214 \| good	11.015 \| good	0.427 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	13.822 \| fine	50.371 \| good	9.996 \| good	1.236 \| good	12.59 \| good	0.508 \| good
2025-07-29T11:00:00.000Z	66 \| moderate	16.939 \| fine	62.232 \| fine	6.648 \| good	1.233 \| good	24.857 \| good	0.566 \| good
2025-07-29T12:00:00.000Z	67 \| moderate	17.523 \| fine	76.242 \| fine	8.293 \| good	1.31 \| good	22.94 \| good	0.514 \| good
2025-07-29T13:00:00.000Z	64 \| moderate	15.749 \| fine	72.58 \| fine	9.82 \| good	1.508 \| good	26.505 \| good	0.616 \| good
2025-07-29T14:00:00.000Z	69 \| moderate	18.929 \| fine	78.21 \| fine	16.633 \| good	1.168 \| good	31.582 \| good	0.514 \| good
2025-07-29T15:00:00.000Z	62 \| moderate	15.319 \| fine	39.566 \| good	23.206 \| good	1.11 \| good	19.604 \| good	0.456 \| good
2025-07-29T16:00:00.000Z	66 \| moderate	16.876 \| fine	49.253 \| good	30.161 \| good	1.149 \| good	12.297 \| good	0.342 \| good
2025-07-29T17:00:00.000Z	66 \| moderate	16.755 \| fine	60.568 \| fine	41.715 \| good	1.037 \| good	8.149 \| good	0.29 \| good
2025-07-29T18:00:00.000Z	84 \| moderate	14.536 \| fine	60.493 \| fine	65.006 \| fine	0.946 \| good	7.756 \| good	0.339 \| good
2025-07-29T19:00:00.000Z	101 \| sensitive	14.869 \| fine	51.939 \| good	70.768 \| fine	0.651 \| good	7.993 \| good	0.33 \| good
2025-07-29T20:00:00.000Z	101 \| sensitive	14.951 \| fine	67.225 \| fine	71.349 \| moderate	1.376 \| good	11.148 \| good	0.351 \| good
2025-07-29T21:00:00.000Z	126 \| sensitive	12.032 \| good	42.189 \| good	77.639 \| moderate	1.557 \| good	10.907 \| good	0.339 \| good
2025-07-29T22:00:00.000Z	126 \| sensitive	10.125 \| good	37.153 \| good	77.893 \| moderate	1.605 \| good	9.333 \| good	0.339 \| good
2025-07-29T23:00:00.000Z	151 \| unhealthy	12.715 \| fine	50.508 \| good	86.251 \| poor	1.821 \| good	3.084 \| good	0.387 \| good
2025-07-30T00:00:00.000Z	129 \| sensitive	14.111 \| fine	53.904 \| good	79.453 \| moderate	1.548 \| good	3.92 \| good	0.387 \| good
2025-07-30T01:00:00.000Z	115 \| sensitive	13.879 \| fine	60.352 \| fine	74.895 \| moderate	1.626 \| good	8.328 \| good	0.284 \| good
2025-07-30T02:00:00.000Z	119 \| sensitive	13.754 \| fine	44.202 \| good	75.608 \| moderate	1.793 \| good	9.32 \| good	0.327 \| good
2025-07-30T03:00:00.000Z	66 \| moderate	16.921 \| fine	74.832 \| fine	26.909 \| good	1.528 \| good	14.917 \| good	0.304 \| good
2025-07-30T04:00:00.000Z	64 \| moderate	12.42 \| fine	47.97 \| good	58.792 \| fine	2.075 \| good	9.921 \| good	0.317 \| good
2025-07-30T05:00:00.000Z	66 \| moderate	16.877 \| fine	78.768 \| fine	56.735 \| fine	2.06 \| good	13.167 \| good	0.337 \| good
2025-07-30T06:00:00.000Z	62 \| moderate	14.959 \| fine	50.526 \| good	44.147 \| good	1.948 \| good	20.526 \| good	0.329 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.29 \| fine	55.443 \| fine	43.313 \| good	1.843 \| good	20.341 \| good	0.277 \| good
2025-07-30T08:00:00.000Z	64 \| moderate	15.576 \| fine	65.489 \| fine	29.262 \| good	1.826 \| good	19.979 \| good	0.277 \| good
2025-07-30T09:00:00.000Z	54 \| moderate	10.824 \| good	44.721 \| good	30.685 \| good	1.3 \| good	25.858 \| good	0.276 \| good
2025-07-30T10:00:00.000Z	62 \| moderate	14.587 \| fine	65.149 \| fine	29.047 \| good	1.177 \| good	25.022 \| good	0.323 \| good
2025-07-30T11:00:00.000Z	62 \| moderate	14.587 \| fine	65.149 \| fine	29.047 \| good	1.177 \| good	25.022 \| good	0.323 \| good
2025-07-30T01:00:00.000Z	75 \| moderate	21.51 \| fine	94.194 \| fine	47.501 \| good	1.003 \| good	10.838 \| good	0.262 \| good
2025-07-30T02:00:00.000Z	73 \| moderate	21.058 \| fine	92.905 \| fine	40.294 \| good	1.209 \| good	14.498 \| good	0.294 \| good
2025-07-30T03:00:00.000Z	69 \| moderate	19.381 \| fine	85.414 \| fine	29.476 \| good	1.415 \| good	18.158 \| good	0.325 \| good
2025-07-30T04:00:00.000Z	64 \| moderate	15.913 \| fine	71.201 \| fine	25.673 \| good	1.377 \| good	17.336 \| good	0.32 \| good
2025-07-30T05:00:00.000Z	62 \| moderate	14.955 \| fine	66.326 \| fine	24.372 \| good	1.338 \| good	16.515 \| good	0.315 \| good
2025-07-30T06:00:00.000Z	60 \| moderate	13.966 \| fine	63.017 \| fine	23.453 \| good	1.3 \| good	15.693 \| good	0.31 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.085 \| fine	62.984 \| fine	21.271 \| good	1.275 \| good	14.515 \| good	0.293 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	15.046 \| fine	66.936 \| fine	21.108 \| good	1.249 \| good	13.338 \| good	0.276 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	13.465 \| fine	60.142 \| fine	24.547 \| good	1.224 \| good	12.16 \| good	0.259 \| good
2025-07-30T10:00:00.000Z	64 \| moderate	16.282 \| fine	72.911 \| fine	20.961 \| good	1.231 \| good	11.36 \| good	0.256 \| good
2025-07-30T11:00:00.000Z	71 \| moderate	19.678 \| fine	86.335 \| fine	22.577 \| good	1.238 \| good	10.559 \| good	0.253 \| good
2025-07-30T12:00:00.000Z	69 \| moderate	19.045 \| fine	84.115 \| fine	32.287 \| good	1.246 \| good	9.759 \| good	0.25 \| good
2025-07-30T13:00:00.000Z	73 \| moderate	21.373 \| fine	93.61 \| fine	41.849 \| good	1.197 \| good	8.74 \| good	0.24 \| good
2025-07-30T14:00:00.000Z	79 \| moderate	23.852 \| fine	104.507 \| fine	52.722 \| good	1.149 \| good	7.72 \| good	0.231 \| good
2025-07-30T15:00:00.000Z	84 \| moderate	27.08 \| fine	118.179 \| fine	65.11 \| fine	1.1 \| good	6.701 \| good	0.221 \| good
2025-07-30T16:00:00.000Z	105 \| sensitive	24.831 \| fine	108.306 \| fine	71.887 \| moderate	1.137 \| good	5.289 \| good	0.212 \| good
2025-07-30T17:00:00.000Z	112 \| sensitive	24.772 \| fine	108.264 \| fine	73.611 \| moderate	1.175 \| good	3.876 \| good	0.203 \| good
2025-07-30T18:00:00.000Z	112 \| sensitive	24.716 \| fine	108.258 \| fine	74.06 \| moderate	1.212 \| good	2.464 \| good	0.195 \| good
2025-07-30T19:00:00.000Z	112 \| sensitive	25.749 \| fine	112.217 \| fine	73.853 \| moderate	1.099 \| good	2.377 \| good	0.189 \| good
2025-07-30T20:00:00.000Z	105 \| sensitive	24.6 \| fine	107.094 \| fine	71.907 \| moderate	0.986 \| good	2.29 \| good	0.183 \| good
2025-07-30T21:00:00.000Z	119 \| sensitive	24.186 \| fine	105.835 \| fine	76.143 \| moderate	0.873 \| good	2.203 \| good	0.177 \| good
2025-07-30T22:00:00.000Z	87 \| moderate	22.727 \| fine	99.802 \| fine	65.822 \| fine	0.876 \| good	3.514 \| good	0.188 \| good
2025-07-30T23:00:00.000Z	73 \| moderate	20.543 \| fine	89.84 \| fine	54.459 \| good	0.878 \| good	4.826 \| good	0.199 \| good
2025-07-31T00:00:00.000Z	69 \| moderate	19.351 \| fine	84.982 \| fine	51.413 \| good	0.88 \| good	6.137 \| good	0.21 \| good
2025-07-31T01:00:00.000Z	69 \| moderate	18.533 \| fine	81.662 \| fine	44.127 \| good	1.053 \| good	9.707 \| good	0.24 \| good
2025-07-31T02:00:00.000Z	69 \| moderate	18.765 \| fine	82.768 \| fine	37.939 \| good	1.226 \| good	13.276 \| good	0.27 \| good
2025-07-31T03:00:00.000Z	64 \| moderate	15.976 \| fine	71.23 \| fine	39.306 \| good	1.4 \| good	16.845 \| good	0.3 \| good
2025-07-31T04:00:00.000Z	54 \| moderate	10.736 \| good	47.605 \| good	42.071 \| good	1.482 \| good	16.465 \| good	0.307 \| good
2025-07-31T05:00:00.000Z	58 \| moderate	13.205 \| fine	59.75 \| fine	36.461 \| good	1.565 \| good	16.086 \| good	0.314 \| good
2025-07-31T06:00:00.000Z	56 \| moderate	11.826 \| good	52.426 \| good	36.911 \| good	1.647 \| good	15.706 \| good	0.322 \| good
2025-07-31T07:00:00.000Z	56 \| moderate	12.209 \| fine	55.12 \| fine	34.133 \| good	1.589 \| good	13.968 \| good	0.302 \| good
2025-07-31T08:00:00.000Z	58 \| moderate	13.066 \| fine	58.933 \| fine	31.038 \| good	1.53 \| good	12.231 \| good	0.282 \| good
2025-07-31T09:00:00.000Z	54 \| moderate	11.465 \| good	50.632 \| good	28.557 \| good	1.471 \| good	10.493 \| good	0.262 \| good
2025-07-31T10:00:00.000Z	56 \| moderate	11.662 \| good	51.608 \| good	26.687 \| good	1.553 \| good	9.438 \| good	0.244 \| good
2025-07-31T11:00:00.000Z	56 \| moderate	12.326 \| fine	55.654 \| fine	27.711 \| good	1.636 \| good	8.383 \| good	0.225 \| good
2025-07-31T12:00:00.000Z	64 \| moderate	16.118 \| fine	71.787 \| fine	30.145 \| good	1.718 \| good	7.329 \| good	0.207 \| good
2025-07-31T13:00:00.000Z	71 \| moderate	19.705 \| fine	86.183 \| fine	37.381 \| good	1.827 \| good	6.988 \| good	0.206 \| good
2025-07-31T14:00:00.000Z	73 \| moderate	21.314 \| fine	93.997 \| fine	45.442 \| good	1.935 \| good	6.648 \| good	0.206 \| good
2025-07-31T15:00:00.000Z	73 \| moderate	21.079 \| fine	92.342 \| fine	44.558 \| good	2.043 \| good	6.307 \| good	0.206 \| good
2025-07-31T16:00:00.000Z	71 \| moderate	20.028 \| fine	88.163 \| fine	45.324 \| good	1.846 \| good	5.345 \| good	0.201 \| good
2025-07-31T17:00:00.000Z	71 \| moderate	20.397 \| fine	89.358 \| fine	52.591 \| good	1.65 \| good	4.382 \| good	0.197 \| good
2025-07-31T18:00:00.000Z	69 \| moderate	19.216 \| fine	85.113 \| fine	57.072 \| fine	1.453 \| good	3.42 \| good	0.192 \| good
2025-07-31T19:00:00.000Z	66 \| moderate	17.002 \| fine	75.841 \| fine	50.919 \| good	1.304 \| good	3.758 \| good	0.191 \| good
2025-07-31T20:00:00.000Z	58 \| moderate	13.079 \| fine	58.821 \| fine	38.428 \| good	1.155 \| good	4.096 \| good	0.19 \| good
2025-07-31T21:00:00.000Z	58 \| moderate	12.704 \| fine	57.13 \| fine	34.073 \| good	1.005 \| good	4.435 \| good	0.189 \| good
2025-07-31T22:00:00.000Z	56 \| moderate	11.966 \| good	53.259 \| good	33.628 \| good	0.95 \| good	5.047 \| good	0.194 \| good
2025-07-31T23:00:00.000Z	54 \| moderate	10.988 \| good	48.619 \| good	30.229 \| good	0.895 \| good	5.66 \| good	0.199 \| good
2025-08-01T00:00:00.000Z	60 \| moderate	13.865 \| fine	16.097 \| good	52.029 \| good	0.841 \| good	6.315 \| good	0.206 \| good

Stamford

Get reliable air quality data to drive your business

Stamford, Connecticut air quality map: Stay updated on AQI near you

0.40ppm

How accurate is Connecticut, USA air quality data?

Air quality and pollutant data for Connecticut, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Stamford, Connecticut?

The air quality information for Stamford, Connecticut is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Stamford, Connecticut at its worst?

In the past 24 hours, the air quality in Stamford, Connecticut was at its worst at 11:00:00 on 2025-07-29.

When did Stamford, Connecticut experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Stamford, Connecticut was observed at 12:00:00 on 2025-07-29.

What is the AQI in Stamford, Connecticut right now?

As of now, the AQI in Stamford, Connecticut is 151, indicating Unhealthy conditions.

What is the most common type of pollution in Stamford, Connecticut?

Stamford, Connecticut air has the highest levels of O3.

What should I do in case of poor air quality in Stamford, Connecticut?

Poor air quality in Stamford, Connecticut means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Stamford, Connecticut at the moment?

PM_2.5 levels in Stamford, Connecticut are currently 12.715 μg/m³.

What is the PM₁₀ level in Stamford, Connecticut at the moment?

The PM₁₀ concentration in Stamford, Connecticut is 50.508 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Stamford, Connecticut at the moment?

The current carbon monoxide (CO) concentration in Stamford, Connecticut is 0.387 ppm.

What is the sulfur dioxide (SO₂) level in Stamford, Connecticut at the moment?

Currently, Stamford, Connecticut has a sulfur dioxide (SO₂) concentration of 1.821 ppb.

What is the ozone (O₃) level in Stamford, Connecticut at the moment?

The current ozone (O₃) level in Stamford, Connecticut at the moment is 86.251 ppm.

What is the nitrogen dioxide (NO₂) level in Stamford, Connecticut at the moment?

Nitrogen dioxide (NO₂) level in Stamford, Connecticut at the moment is 3.084 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T12:00:00.000Z	38 \| good	7.429 \| good	30.487 \| good	24.844 \| good	0.646 \| good	16.488 \| good	0.377 \| good
2025-07-28T13:00:00.000Z	52 \| moderate	10.242 \| good	43.388 \| good	29.29 \| good	0.462 \| good	8.418 \| good	0.394 \| good
2025-07-28T14:00:00.000Z	52 \| moderate	10.421 \| good	46.259 \| good	29.773 \| good	0.446 \| good	10.643 \| good	0.384 \| good
2025-07-28T15:00:00.000Z	52 \| moderate	9.546 \| good	27.552 \| good	29.683 \| good	0.409 \| good	12.403 \| good	0.291 \| good
2025-07-28T16:00:00.000Z	44 \| good	8.46 \| good	32.11 \| good	38.017 \| good	0.496 \| good	9.439 \| good	0.236 \| good
2025-07-28T17:00:00.000Z	49 \| good	9.366 \| good	40.253 \| good	38.915 \| good	0.523 \| good	6.196 \| good	0.237 \| good
2025-07-28T18:00:00.000Z	54 \| moderate	10.781 \| good	48.936 \| good	45.567 \| good	0.595 \| good	6.265 \| good	0.253 \| good
2025-07-28T19:00:00.000Z	54 \| moderate	11.452 \| good	50.324 \| good	49.475 \| good	0.382 \| good	4.536 \| good	0.237 \| good
2025-07-28T20:00:00.000Z	56 \| moderate	11.563 \| good	42.034 \| good	52.472 \| good	0.463 \| good	4.95 \| good	0.26 \| good
2025-07-28T21:00:00.000Z	50 \| good	8.663 \| good	36.489 \| good	53.663 \| good	0.515 \| good	4.66 \| good	0.267 \| good
2025-07-28T22:00:00.000Z	49 \| good	8.545 \| good	28.043 \| good	48.938 \| good	0.397 \| good	5.423 \| good	0.267 \| good
2025-07-28T23:00:00.000Z	54 \| moderate	10.64 \| good	45.963 \| good	47.456 \| good	0.431 \| good	7.097 \| good	0.276 \| good
2025-07-29T00:00:00.000Z	52 \| moderate	10.054 \| good	35.936 \| good	45.297 \| good	0.47 \| good	3.903 \| good	0.33 \| good
2025-07-29T01:00:00.000Z	56 \| moderate	12.307 \| fine	34.521 \| good	44.032 \| good	0.452 \| good	3.839 \| good	0.327 \| good
2025-07-29T02:00:00.000Z	60 \| moderate	14.349 \| fine	36.27 \| good	34.238 \| good	0.542 \| good	13.942 \| good	0.389 \| good
2025-07-29T03:00:00.000Z	58 \| moderate	12.695 \| fine	50.264 \| good	32.922 \| good	0.84 \| good	10.439 \| good	0.422 \| good
2025-07-29T04:00:00.000Z	62 \| moderate	14.784 \| fine	53.302 \| good	32.922 \| good	0.708 \| good	11.96 \| good	0.451 \| good
2025-07-29T05:00:00.000Z	60 \| moderate	13.744 \| fine	38.843 \| good	33.057 \| good	1.111 \| good	15.675 \| good	0.491 \| good
2025-07-29T06:00:00.000Z	62 \| moderate	15.491 \| fine	66.054 \| fine	24.383 \| good	1.194 \| good	16.505 \| good	0.427 \| good
2025-07-29T07:00:00.000Z	64 \| moderate	15.535 \| fine	61.969 \| fine	19.512 \| good	1.214 \| good	12.622 \| good	0.481 \| good
2025-07-29T08:00:00.000Z	60 \| moderate	14.248 \| fine	63.012 \| fine	16.918 \| good	1.209 \| good	13.262 \| good	0.481 \| good
2025-07-29T09:00:00.000Z	60 \| moderate	13.547 \| fine	56.517 \| fine	15.812 \| good	1.214 \| good	11.015 \| good	0.427 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	13.822 \| fine	50.371 \| good	9.996 \| good	1.236 \| good	12.59 \| good	0.508 \| good
2025-07-29T11:00:00.000Z	66 \| moderate	16.939 \| fine	62.232 \| fine	6.648 \| good	1.233 \| good	24.857 \| good	0.566 \| good
2025-07-29T12:00:00.000Z	67 \| moderate	17.523 \| fine	76.242 \| fine	8.293 \| good	1.31 \| good	22.94 \| good	0.514 \| good
2025-07-29T13:00:00.000Z	64 \| moderate	15.749 \| fine	72.58 \| fine	9.82 \| good	1.508 \| good	26.505 \| good	0.616 \| good
2025-07-29T14:00:00.000Z	69 \| moderate	18.929 \| fine	78.21 \| fine	16.633 \| good	1.168 \| good	31.582 \| good	0.514 \| good
2025-07-29T15:00:00.000Z	62 \| moderate	15.319 \| fine	39.566 \| good	23.206 \| good	1.11 \| good	19.604 \| good	0.456 \| good
2025-07-29T16:00:00.000Z	66 \| moderate	16.876 \| fine	49.253 \| good	30.161 \| good	1.149 \| good	12.297 \| good	0.342 \| good
2025-07-29T17:00:00.000Z	66 \| moderate	16.755 \| fine	60.568 \| fine	41.715 \| good	1.037 \| good	8.149 \| good	0.29 \| good
2025-07-29T18:00:00.000Z	84 \| moderate	14.536 \| fine	60.493 \| fine	65.006 \| fine	0.946 \| good	7.756 \| good	0.339 \| good
2025-07-29T19:00:00.000Z	101 \| sensitive	14.869 \| fine	51.939 \| good	70.768 \| fine	0.651 \| good	7.993 \| good	0.33 \| good
2025-07-29T20:00:00.000Z	101 \| sensitive	14.951 \| fine	67.225 \| fine	71.349 \| moderate	1.376 \| good	11.148 \| good	0.351 \| good
2025-07-29T21:00:00.000Z	126 \| sensitive	12.032 \| good	42.189 \| good	77.639 \| moderate	1.557 \| good	10.907 \| good	0.339 \| good
2025-07-29T22:00:00.000Z	126 \| sensitive	10.125 \| good	37.153 \| good	77.893 \| moderate	1.605 \| good	9.333 \| good	0.339 \| good
2025-07-29T23:00:00.000Z	151 \| unhealthy	12.715 \| fine	50.508 \| good	86.251 \| poor	1.821 \| good	3.084 \| good	0.387 \| good
2025-07-30T00:00:00.000Z	129 \| sensitive	14.111 \| fine	53.904 \| good	79.453 \| moderate	1.548 \| good	3.92 \| good	0.387 \| good
2025-07-30T01:00:00.000Z	115 \| sensitive	13.879 \| fine	60.352 \| fine	74.895 \| moderate	1.626 \| good	8.328 \| good	0.284 \| good
2025-07-30T02:00:00.000Z	119 \| sensitive	13.754 \| fine	44.202 \| good	75.608 \| moderate	1.793 \| good	9.32 \| good	0.327 \| good
2025-07-30T03:00:00.000Z	66 \| moderate	16.921 \| fine	74.832 \| fine	26.909 \| good	1.528 \| good	14.917 \| good	0.304 \| good
2025-07-30T04:00:00.000Z	64 \| moderate	12.42 \| fine	47.97 \| good	58.792 \| fine	2.075 \| good	9.921 \| good	0.317 \| good
2025-07-30T05:00:00.000Z	66 \| moderate	16.877 \| fine	78.768 \| fine	56.735 \| fine	2.06 \| good	13.167 \| good	0.337 \| good
2025-07-30T06:00:00.000Z	62 \| moderate	14.959 \| fine	50.526 \| good	44.147 \| good	1.948 \| good	20.526 \| good	0.329 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.29 \| fine	55.443 \| fine	43.313 \| good	1.843 \| good	20.341 \| good	0.277 \| good
2025-07-30T08:00:00.000Z	64 \| moderate	15.576 \| fine	65.489 \| fine	29.262 \| good	1.826 \| good	19.979 \| good	0.277 \| good
2025-07-30T09:00:00.000Z	54 \| moderate	10.824 \| good	44.721 \| good	30.685 \| good	1.3 \| good	25.858 \| good	0.276 \| good
2025-07-30T10:00:00.000Z	62 \| moderate	14.587 \| fine	65.149 \| fine	29.047 \| good	1.177 \| good	25.022 \| good	0.323 \| good
2025-07-30T11:00:00.000Z	62 \| moderate	14.587 \| fine	65.149 \| fine	29.047 \| good	1.177 \| good	25.022 \| good	0.323 \| good
2025-07-30T01:00:00.000Z	75 \| moderate	21.51 \| fine	94.194 \| fine	47.501 \| good	1.003 \| good	10.838 \| good	0.262 \| good
2025-07-30T02:00:00.000Z	73 \| moderate	21.058 \| fine	92.905 \| fine	40.294 \| good	1.209 \| good	14.498 \| good	0.294 \| good
2025-07-30T03:00:00.000Z	69 \| moderate	19.381 \| fine	85.414 \| fine	29.476 \| good	1.415 \| good	18.158 \| good	0.325 \| good
2025-07-30T04:00:00.000Z	64 \| moderate	15.913 \| fine	71.201 \| fine	25.673 \| good	1.377 \| good	17.336 \| good	0.32 \| good
2025-07-30T05:00:00.000Z	62 \| moderate	14.955 \| fine	66.326 \| fine	24.372 \| good	1.338 \| good	16.515 \| good	0.315 \| good
2025-07-30T06:00:00.000Z	60 \| moderate	13.966 \| fine	63.017 \| fine	23.453 \| good	1.3 \| good	15.693 \| good	0.31 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.085 \| fine	62.984 \| fine	21.271 \| good	1.275 \| good	14.515 \| good	0.293 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	15.046 \| fine	66.936 \| fine	21.108 \| good	1.249 \| good	13.338 \| good	0.276 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	13.465 \| fine	60.142 \| fine	24.547 \| good	1.224 \| good	12.16 \| good	0.259 \| good
2025-07-30T10:00:00.000Z	64 \| moderate	16.282 \| fine	72.911 \| fine	20.961 \| good	1.231 \| good	11.36 \| good	0.256 \| good
2025-07-30T11:00:00.000Z	71 \| moderate	19.678 \| fine	86.335 \| fine	22.577 \| good	1.238 \| good	10.559 \| good	0.253 \| good
2025-07-30T12:00:00.000Z	69 \| moderate	19.045 \| fine	84.115 \| fine	32.287 \| good	1.246 \| good	9.759 \| good	0.25 \| good
2025-07-30T13:00:00.000Z	73 \| moderate	21.373 \| fine	93.61 \| fine	41.849 \| good	1.197 \| good	8.74 \| good	0.24 \| good
2025-07-30T14:00:00.000Z	79 \| moderate	23.852 \| fine	104.507 \| fine	52.722 \| good	1.149 \| good	7.72 \| good	0.231 \| good
2025-07-30T15:00:00.000Z	84 \| moderate	27.08 \| fine	118.179 \| fine	65.11 \| fine	1.1 \| good	6.701 \| good	0.221 \| good
2025-07-30T16:00:00.000Z	105 \| sensitive	24.831 \| fine	108.306 \| fine	71.887 \| moderate	1.137 \| good	5.289 \| good	0.212 \| good
2025-07-30T17:00:00.000Z	112 \| sensitive	24.772 \| fine	108.264 \| fine	73.611 \| moderate	1.175 \| good	3.876 \| good	0.203 \| good
2025-07-30T18:00:00.000Z	112 \| sensitive	24.716 \| fine	108.258 \| fine	74.06 \| moderate	1.212 \| good	2.464 \| good	0.195 \| good
2025-07-30T19:00:00.000Z	112 \| sensitive	25.749 \| fine	112.217 \| fine	73.853 \| moderate	1.099 \| good	2.377 \| good	0.189 \| good
2025-07-30T20:00:00.000Z	105 \| sensitive	24.6 \| fine	107.094 \| fine	71.907 \| moderate	0.986 \| good	2.29 \| good	0.183 \| good
2025-07-30T21:00:00.000Z	119 \| sensitive	24.186 \| fine	105.835 \| fine	76.143 \| moderate	0.873 \| good	2.203 \| good	0.177 \| good
2025-07-30T22:00:00.000Z	87 \| moderate	22.727 \| fine	99.802 \| fine	65.822 \| fine	0.876 \| good	3.514 \| good	0.188 \| good
2025-07-30T23:00:00.000Z	73 \| moderate	20.543 \| fine	89.84 \| fine	54.459 \| good	0.878 \| good	4.826 \| good	0.199 \| good
2025-07-31T00:00:00.000Z	69 \| moderate	19.351 \| fine	84.982 \| fine	51.413 \| good	0.88 \| good	6.137 \| good	0.21 \| good
2025-07-31T01:00:00.000Z	69 \| moderate	18.533 \| fine	81.662 \| fine	44.127 \| good	1.053 \| good	9.707 \| good	0.24 \| good
2025-07-31T02:00:00.000Z	69 \| moderate	18.765 \| fine	82.768 \| fine	37.939 \| good	1.226 \| good	13.276 \| good	0.27 \| good
2025-07-31T03:00:00.000Z	64 \| moderate	15.976 \| fine	71.23 \| fine	39.306 \| good	1.4 \| good	16.845 \| good	0.3 \| good
2025-07-31T04:00:00.000Z	54 \| moderate	10.736 \| good	47.605 \| good	42.071 \| good	1.482 \| good	16.465 \| good	0.307 \| good
2025-07-31T05:00:00.000Z	58 \| moderate	13.205 \| fine	59.75 \| fine	36.461 \| good	1.565 \| good	16.086 \| good	0.314 \| good
2025-07-31T06:00:00.000Z	56 \| moderate	11.826 \| good	52.426 \| good	36.911 \| good	1.647 \| good	15.706 \| good	0.322 \| good
2025-07-31T07:00:00.000Z	56 \| moderate	12.209 \| fine	55.12 \| fine	34.133 \| good	1.589 \| good	13.968 \| good	0.302 \| good
2025-07-31T08:00:00.000Z	58 \| moderate	13.066 \| fine	58.933 \| fine	31.038 \| good	1.53 \| good	12.231 \| good	0.282 \| good
2025-07-31T09:00:00.000Z	54 \| moderate	11.465 \| good	50.632 \| good	28.557 \| good	1.471 \| good	10.493 \| good	0.262 \| good
2025-07-31T10:00:00.000Z	56 \| moderate	11.662 \| good	51.608 \| good	26.687 \| good	1.553 \| good	9.438 \| good	0.244 \| good
2025-07-31T11:00:00.000Z	56 \| moderate	12.326 \| fine	55.654 \| fine	27.711 \| good	1.636 \| good	8.383 \| good	0.225 \| good
2025-07-31T12:00:00.000Z	64 \| moderate	16.118 \| fine	71.787 \| fine	30.145 \| good	1.718 \| good	7.329 \| good	0.207 \| good
2025-07-31T13:00:00.000Z	71 \| moderate	19.705 \| fine	86.183 \| fine	37.381 \| good	1.827 \| good	6.988 \| good	0.206 \| good
2025-07-31T14:00:00.000Z	73 \| moderate	21.314 \| fine	93.997 \| fine	45.442 \| good	1.935 \| good	6.648 \| good	0.206 \| good
2025-07-31T15:00:00.000Z	73 \| moderate	21.079 \| fine	92.342 \| fine	44.558 \| good	2.043 \| good	6.307 \| good	0.206 \| good
2025-07-31T16:00:00.000Z	71 \| moderate	20.028 \| fine	88.163 \| fine	45.324 \| good	1.846 \| good	5.345 \| good	0.201 \| good
2025-07-31T17:00:00.000Z	71 \| moderate	20.397 \| fine	89.358 \| fine	52.591 \| good	1.65 \| good	4.382 \| good	0.197 \| good
2025-07-31T18:00:00.000Z	69 \| moderate	19.216 \| fine	85.113 \| fine	57.072 \| fine	1.453 \| good	3.42 \| good	0.192 \| good
2025-07-31T19:00:00.000Z	66 \| moderate	17.002 \| fine	75.841 \| fine	50.919 \| good	1.304 \| good	3.758 \| good	0.191 \| good
2025-07-31T20:00:00.000Z	58 \| moderate	13.079 \| fine	58.821 \| fine	38.428 \| good	1.155 \| good	4.096 \| good	0.19 \| good
2025-07-31T21:00:00.000Z	58 \| moderate	12.704 \| fine	57.13 \| fine	34.073 \| good	1.005 \| good	4.435 \| good	0.189 \| good
2025-07-31T22:00:00.000Z	56 \| moderate	11.966 \| good	53.259 \| good	33.628 \| good	0.95 \| good	5.047 \| good	0.194 \| good
2025-07-31T23:00:00.000Z	54 \| moderate	10.988 \| good	48.619 \| good	30.229 \| good	0.895 \| good	5.66 \| good	0.199 \| good
2025-08-01T00:00:00.000Z	60 \| moderate	13.865 \| fine	16.097 \| good	52.029 \| good	0.841 \| good	6.315 \| good	0.206 \| good

Live air quality index in Stamford, Connecticut today

Major air pollutants in Stamford, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Stamford, Connecticut air quality map: Stay updated on AQI near you

Air quality in nearby cities

Darien, Connecticut

Greenwich, Connecticut

New Canaan, Connecticut

Port Chester, New York

Norwalk, Connecticut

Rye, New York

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Frequently asked questions

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What is the sulfur dioxide (SO2) level in Stamford, Connecticut at the moment?

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What is the nitrogen dioxide (NO2) level in Stamford, Connecticut at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Stamford, Connecticut at the moment?

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What is the sulfur dioxide (SO₂) level in Stamford, Connecticut at the moment?

What is the ozone (O₃) level in Stamford, Connecticut at the moment?

What is the nitrogen dioxide (NO₂) level in Stamford, Connecticut at the moment?