What are the current PM10 levels at Chelsea, Massachusetts?

The current PM10 levels in Chelsea, Massachusetts are 72.277 μg/m3.

What are the current sulfur dioxide (SO2) levels at Chelsea, Massachusetts?

The current sulfur dioxide (SO2) levels in Chelsea, Massachusetts are 0.38 ppb.

What are the current ozone (O3) levels at Chelsea, Massachusetts?

The current ozone (O3) levels at Chelsea, Massachusetts is 33.438 ppm.

What are the current nitrogen dioxide (NO2) levels at Chelsea, Massachusetts?

The current nitrogen dioxide (NO2) levels at Chelsea, Massachusetts is 7.807 ppb.

Real-time air quality index in Chelsea, Massachusetts today

Name: Live air pollution levels in Chelsea, Massachusetts today
Creator: Ambee

Stay updated with real-time air quality in Chelsea, Massachusetts 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

Chelsea, Massachusetts

Last updated: ... (Local time)

Common air pollutants in Chelsea, Massachusetts

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

20.42 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

56.63 μg/m³

155

255

425

605+

Ozone (O₃)

22.82 ppb

201

201+

Sulfur Dioxide (SO₂)

0.36 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.57 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

Please contact us for custom requests

Chelsea, Massachusetts

Scroll To Air Quality Map

Track live Chelsea, Massachusetts air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-29T08:00:00.000Z	60 \| moderate	13.924 \| fine	51.966 \| good	20.914 \| good	0.342 \| good	5.724 \| good	0.291 \| good
2025-07-29T09:00:00.000Z	62 \| moderate	15.296 \| fine	64.415 \| fine	21.699 \| good	0.335 \| good	5.549 \| good	0.299 \| good
2025-07-29T10:00:00.000Z	64 \| moderate	15.624 \| fine	66.243 \| fine	24.51 \| good	0.378 \| good	5.087 \| good	0.302 \| good
2025-07-29T11:00:00.000Z	64 \| moderate	16.11 \| fine	67.674 \| fine	21.757 \| good	0.313 \| good	7.03 \| good	0.346 \| good
2025-07-29T12:00:00.000Z	64 \| moderate	16.371 \| fine	69.283 \| fine	21.392 \| good	0.35 \| good	10.048 \| good	0.441 \| good
2025-07-29T13:00:00.000Z	64 \| moderate	16.463 \| fine	69.674 \| fine	20.301 \| good	0.369 \| good	8.557 \| good	0.35 \| good
2025-07-29T14:00:00.000Z	64 \| moderate	16.368 \| fine	68.929 \| fine	30.114 \| good	0.421 \| good	8.636 \| good	0.386 \| good
2025-07-29T15:00:00.000Z	64 \| moderate	16.368 \| fine	69.015 \| fine	33.448 \| good	0.378 \| good	8.284 \| good	0.304 \| good
2025-07-29T16:00:00.000Z	64 \| moderate	16.463 \| fine	70.222 \| fine	40.093 \| good	0.382 \| good	7.309 \| good	0.256 \| good
2025-07-29T17:00:00.000Z	64 \| moderate	16.44 \| fine	70.562 \| fine	45.986 \| good	0.438 \| good	7.255 \| good	0.256 \| good
2025-07-29T18:00:00.000Z	64 \| moderate	16.136 \| fine	68.992 \| fine	50.036 \| good	0.532 \| good	5.75 \| good	0.252 \| good
2025-07-29T19:00:00.000Z	62 \| moderate	15.457 \| fine	66.77 \| fine	52.829 \| good	0.623 \| good	5.692 \| good	0.255 \| good
2025-07-29T20:00:00.000Z	62 \| moderate	14.948 \| fine	64.856 \| fine	51.747 \| good	0.682 \| good	5.161 \| good	0.304 \| good
2025-07-29T21:00:00.000Z	62 \| moderate	14.635 \| fine	63.028 \| fine	51.527 \| good	0.639 \| good	4.34 \| good	0.259 \| good
2025-07-29T22:00:00.000Z	60 \| moderate	14.352 \| fine	60.942 \| fine	47.762 \| good	0.64 \| good	4.046 \| good	0.255 \| good
2025-07-29T23:00:00.000Z	60 \| moderate	13.579 \| fine	58.832 \| fine	44.167 \| good	0.584 \| good	4.151 \| good	0.255 \| good
2025-07-30T00:00:00.000Z	56 \| moderate	12.35 \| fine	53.211 \| good	41.232 \| good	0.531 \| good	4.578 \| good	0.263 \| good
2025-07-30T01:00:00.000Z	54 \| moderate	10.782 \| good	45.817 \| good	42.092 \| good	0.473 \| good	6.717 \| good	0.212 \| good
2025-07-30T02:00:00.000Z	52 \| moderate	10.311 \| good	44.094 \| good	34.903 \| good	0.307 \| good	7.682 \| good	0.219 \| good
2025-07-30T03:00:00.000Z	69 \| moderate	18.88 \| fine	83.136 \| fine	19.127 \| good	0.903 \| good	13.408 \| good	0.283 \| good
2025-07-30T04:00:00.000Z	54 \| moderate	10.742 \| good	45.806 \| good	35.455 \| good	0.321 \| good	11.932 \| good	0.308 \| good
2025-07-30T05:00:00.000Z	54 \| moderate	10.742 \| good	45.806 \| good	40.753 \| good	0.373 \| good	12.714 \| good	0.338 \| good
2025-07-30T06:00:00.000Z	49 \| good	8.804 \| good	38.052 \| good	37.935 \| good	0.306 \| good	15.064 \| good	0.281 \| good
2025-07-30T07:00:00.000Z	44 \| good	8.152 \| good	47.545 \| good	22.702 \| good	0.518 \| good	15.321 \| good	0.344 \| good
2025-07-30T08:00:00.000Z	56 \| moderate	11.558 \| good	48.225 \| good	21.742 \| good	0.534 \| good	16.599 \| good	0.34 \| good
2025-07-30T09:00:00.000Z	54 \| moderate	11.003 \| good	46.396 \| good	15.401 \| good	0.434 \| good	8.914 \| good	0.217 \| good
2025-07-30T10:00:00.000Z	52 \| moderate	10.228 \| good	43.713 \| good	19.151 \| good	0.4 \| good	9.099 \| good	0.224 \| good
2025-07-30T11:00:00.000Z	52 \| moderate	9.611 \| good	41.026 \| good	16.946 \| good	0.413 \| good	11.339 \| good	0.228 \| good
2025-07-30T12:00:00.000Z	49 \| good	9.345 \| good	39.656 \| good	17.624 \| good	0.429 \| good	11.322 \| good	0.318 \| good
2025-07-30T13:00:00.000Z	52 \| moderate	10.094 \| good	42.975 \| good	25.205 \| good	0.445 \| good	10.996 \| good	0.3 \| good
2025-07-30T14:00:00.000Z	54 \| moderate	11.157 \| good	48.377 \| good	28.873 \| good	0.547 \| good	9.298 \| good	0.257 \| good
2025-07-30T15:00:00.000Z	54 \| moderate	11.127 \| good	48.269 \| good	28.786 \| good	0.392 \| good	5.516 \| good	0.226 \| good
2025-07-30T16:00:00.000Z	54 \| moderate	11.295 \| good	48.225 \| good	35.658 \| good	0.44 \| good	6.515 \| good	0.213 \| good
2025-07-30T17:00:00.000Z	54 \| moderate	11.458 \| good	49.027 \| good	40.128 \| good	0.672 \| good	9.511 \| good	0.257 \| good
2025-07-30T18:00:00.000Z	56 \| moderate	11.737 \| good	51.719 \| good	38.729 \| good	0.579 \| good	8.077 \| good	0.251 \| good
2025-07-30T19:00:00.000Z	56 \| moderate	11.96 \| good	51.852 \| good	48.928 \| good	0.589 \| good	7.095 \| good	0.261 \| good
2025-07-30T20:00:00.000Z	56 \| moderate	12.093 \| good	52.332 \| good	48.135 \| good	0.54 \| good	6.813 \| good	0.261 \| good
2025-07-30T21:00:00.000Z	56 \| moderate	12.085 \| good	51.986 \| good	41.674 \| good	0.602 \| good	7.562 \| good	0.303 \| good
2025-07-30T22:00:00.000Z	56 \| moderate	12.026 \| good	51.963 \| good	41.33 \| good	0.513 \| good	7.968 \| good	0.343 \| good
2025-07-30T23:00:00.000Z	56 \| moderate	11.853 \| good	51.767 \| good	35.819 \| good	0.669 \| good	11.353 \| good	0.263 \| good
2025-07-31T00:00:00.000Z	56 \| moderate	11.54 \| good	50.262 \| good	38.46 \| good	0.46 \| good	7.353 \| good	0.263 \| good
2025-07-31T01:00:00.000Z	54 \| moderate	11.475 \| good	49.22 \| good	41.541 \| good	0.42 \| good	13.469 \| good	0.351 \| good
2025-07-31T02:00:00.000Z	54 \| moderate	11.347 \| good	48.591 \| good	37.437 \| good	0.427 \| good	10.734 \| good	0.304 \| good
2025-07-31T03:00:00.000Z	54 \| moderate	10.891 \| good	46.463 \| good	30.987 \| good	0.419 \| good	7.683 \| good	0.26 \| good
2025-07-31T04:00:00.000Z	54 \| moderate	10.891 \| good	46.463 \| good	32.029 \| good	0.409 \| good	7.688 \| good	0.26 \| good
2025-07-31T05:00:00.000Z	54 \| moderate	10.891 \| good	46.463 \| good	36.855 \| good	0.442 \| good	10.516 \| good	0.299 \| good
2025-07-31T06:00:00.000Z	57 \| moderate	10.392 \| good	68.153 \| fine	36.602 \| good	0.87 \| good	10.609 \| good	0.319 \| good
2025-07-31T07:00:00.000Z	71 \| moderate	20.375 \| fine	57.856 \| fine	21.935 \| good	0.363 \| good	11.615 \| good	0.209 \| good
2025-07-31T07:00:00.000Z	71 \| moderate	20.42 \| fine	56.625 \| fine	22.824 \| good	0.36 \| good	11.575 \| good	0.211 \| good
2025-07-29T17:00:00.000Z	77 \| moderate	23.479 \| fine	103.054 \| fine	57.953 \| fine	0.832 \| good	1.958 \| good	0.208 \| good
2025-07-29T18:00:00.000Z	73 \| moderate	20.677 \| fine	91.027 \| fine	51.259 \| good	0.742 \| good	1.681 \| good	0.195 \| good
2025-07-29T19:00:00.000Z	67 \| moderate	18.236 \| fine	81.031 \| fine	48.724 \| good	0.681 \| good	1.837 \| good	0.189 \| good
2025-07-29T20:00:00.000Z	67 \| moderate	17.649 \| fine	78.978 \| fine	49.963 \| good	0.621 \| good	1.992 \| good	0.183 \| good
2025-07-29T21:00:00.000Z	64 \| moderate	15.907 \| fine	71.041 \| fine	49.273 \| good	0.56 \| good	2.148 \| good	0.177 \| good
2025-07-29T22:00:00.000Z	58 \| moderate	12.888 \| fine	57.12 \| fine	40.641 \| good	0.621 \| good	4.457 \| good	0.197 \| good
2025-07-29T23:00:00.000Z	54 \| moderate	10.691 \| good	47.064 \| good	32.722 \| good	0.683 \| good	6.765 \| good	0.216 \| good
2025-07-30T00:00:00.000Z	66 \| moderate	16.695 \| fine	73.108 \| fine	28.219 \| good	0.744 \| good	9.074 \| good	0.235 \| good
2025-07-30T01:00:00.000Z	69 \| moderate	18.653 \| fine	82.96 \| fine	23.462 \| good	0.767 \| good	10.428 \| good	0.248 \| good
2025-07-30T02:00:00.000Z	71 \| moderate	19.693 \| fine	87.026 \| fine	20.197 \| good	0.79 \| good	11.782 \| good	0.26 \| good
2025-07-30T03:00:00.000Z	73 \| moderate	20.661 \| fine	91.039 \| fine	19.375 \| good	0.813 \| good	13.136 \| good	0.273 \| good
2025-07-30T04:00:00.000Z	77 \| moderate	23.435 \| fine	102.964 \| fine	19.791 \| good	0.788 \| good	11.917 \| good	0.266 \| good
2025-07-30T05:00:00.000Z	84 \| moderate	27.267 \| fine	118.872 \| fine	21.072 \| good	0.763 \| good	10.698 \| good	0.26 \| good
2025-07-30T06:00:00.000Z	86 \| moderate	28.152 \| fine	122.915 \| fine	22.126 \| good	0.738 \| good	9.478 \| good	0.253 \| good
2025-07-30T07:00:00.000Z	84 \| moderate	27.117 \| fine	118.913 \| fine	20.659 \| good	0.759 \| good	9.494 \| good	0.256 \| good
2025-07-30T08:00:00.000Z	79 \| moderate	23.52 \| fine	102.994 \| fine	19.796 \| good	0.781 \| good	9.509 \| good	0.259 \| good
2025-07-30T09:00:00.000Z	86 \| moderate	27.525 \| fine	119.073 \| fine	18.187 \| good	0.802 \| good	9.524 \| good	0.261 \| good
2025-07-30T10:00:00.000Z	81 \| moderate	24.636 \| fine	107.012 \| fine	16.129 \| good	0.965 \| good	9.346 \| good	0.274 \| good
2025-07-30T11:00:00.000Z	79 \| moderate	24.198 \| fine	105.04 \| fine	19.168 \| good	1.127 \| good	9.168 \| good	0.286 \| good
2025-07-30T12:00:00.000Z	77 \| moderate	23.086 \| fine	101.024 \| fine	24.23 \| good	1.289 \| good	8.99 \| good	0.299 \| good
2025-07-30T13:00:00.000Z	77 \| moderate	23.28 \| fine	101.074 \| fine	29.742 \| good	1.307 \| good	7.354 \| good	0.285 \| good
2025-07-30T14:00:00.000Z	86 \| moderate	27.753 \| fine	120.926 \| fine	33.125 \| good	1.325 \| good	5.719 \| good	0.272 \| good
2025-07-30T15:00:00.000Z	86 \| moderate	27.902 \| fine	120.929 \| fine	41.302 \| good	1.344 \| good	4.083 \| good	0.258 \| good
2025-07-30T16:00:00.000Z	77 \| moderate	22.719 \| fine	99.115 \| fine	50.938 \| good	1.117 \| good	3.322 \| good	0.245 \| good
2025-07-30T17:00:00.000Z	73 \| moderate	21.326 \| fine	93.142 \| fine	56.817 \| fine	0.891 \| good	2.561 \| good	0.232 \| good
2025-07-30T18:00:00.000Z	69 \| moderate	18.648 \| fine	83.04 \| fine	54.684 \| good	0.665 \| good	1.8 \| good	0.22 \| good
2025-07-30T19:00:00.000Z	66 \| moderate	16.955 \| fine	75.107 \| fine	54.081 \| good	0.585 \| good	1.88 \| good	0.212 \| good
2025-07-30T20:00:00.000Z	66 \| moderate	17.34 \| fine	77.017 \| fine	55.939 \| fine	0.505 \| good	1.96 \| good	0.205 \| good
2025-07-30T21:00:00.000Z	60 \| moderate	14.265 \| fine	63.123 \| fine	50.585 \| good	0.425 \| good	2.04 \| good	0.198 \| good
2025-07-30T22:00:00.000Z	56 \| moderate	11.625 \| good	51.115 \| good	47.453 \| good	0.501 \| good	3.909 \| good	0.211 \| good
2025-07-30T23:00:00.000Z	60 \| moderate	13.564 \| fine	61.077 \| fine	47.58 \| good	0.577 \| good	5.777 \| good	0.224 \| good
2025-07-31T00:00:00.000Z	69 \| moderate	18.834 \| fine	82.973 \| fine	46.556 \| good	0.652 \| good	7.646 \| good	0.237 \| good
2025-07-31T01:00:00.000Z	69 \| moderate	19.438 \| fine	85.007 \| fine	44.272 \| good	0.794 \| good	10.59 \| good	0.264 \| good
2025-07-31T02:00:00.000Z	71 \| moderate	20.252 \| fine	88.919 \| fine	41.279 \| good	0.935 \| good	13.535 \| good	0.291 \| good
2025-07-31T03:00:00.000Z	75 \| moderate	22.267 \| fine	96.989 \| fine	32.43 \| good	1.076 \| good	16.48 \| good	0.318 \| good
2025-07-31T04:00:00.000Z	75 \| moderate	22.177 \| fine	97.097 \| fine	31.479 \| good	1.127 \| good	16.905 \| good	0.326 \| good
2025-07-31T05:00:00.000Z	77 \| moderate	22.567 \| fine	99.003 \| fine	30.898 \| good	1.178 \| good	17.331 \| good	0.334 \| good
2025-07-31T06:00:00.000Z	75 \| moderate	22.416 \| fine	98.973 \| fine	29.097 \| good	1.229 \| good	17.757 \| good	0.342 \| good
2025-07-31T07:00:00.000Z	79 \| moderate	23.569 \| fine	103.019 \| fine	25.174 \| good	1.171 \| good	15.129 \| good	0.317 \| good
2025-07-31T08:00:00.000Z	77 \| moderate	22.694 \| fine	99.123 \| fine	24.24 \| good	1.113 \| good	12.501 \| good	0.292 \| good
2025-07-31T09:00:00.000Z	84 \| moderate	26.733 \| fine	116.97 \| fine	24.193 \| good	1.055 \| good	9.873 \| good	0.267 \| good
2025-07-31T10:00:00.000Z	84 \| moderate	27.136 \| fine	118.94 \| fine	23.727 \| good	0.979 \| good	8.518 \| good	0.253 \| good
2025-07-31T11:00:00.000Z	86 \| moderate	27.526 \| fine	119.079 \| fine	23.515 \| good	0.902 \| good	7.162 \| good	0.24 \| good
2025-07-31T12:00:00.000Z	82 \| moderate	26.093 \| fine	113.075 \| fine	24.6 \| good	0.825 \| good	5.807 \| good	0.226 \| good
2025-07-31T13:00:00.000Z	81 \| moderate	24.612 \| fine	106.972 \| fine	25.148 \| good	0.792 \| good	5.154 \| good	0.225 \| good
2025-07-31T14:00:00.000Z	69 \| moderate	19.04 \| fine	84.895 \| fine	29.061 \| good	0.76 \| good	4.5 \| good	0.223 \| good
2025-07-31T15:00:00.000Z	67 \| moderate	18.063 \| fine	79.043 \| fine	29.118 \| good	0.727 \| good	3.847 \| good	0.222 \| good
2025-07-31T16:00:00.000Z	66 \| moderate	16.977 \| fine	74.986 \| fine	27.268 \| good	0.733 \| good	3.78 \| good	0.227 \| good

Chelsea

Empower business decisions with accurate air quality data

Chelsea, Massachusetts air quality map: Real-time AQI near you

0.30ppm

How accurate is Massachusetts, USA air quality data?

Air quality measurements for Massachusetts, 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

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

Frequently asked questions

How frequently is the air quality data for Chelsea, Massachusetts updated?

Air quality data for Chelsea, Massachusetts is updated on an hourly basis.

When did Chelsea, Massachusetts experience the worst air quality in the last 24 hours?

The worst air quality in Chelsea, Massachusetts was recorded at 05:00:00 on 2025-07-28.

When did Chelsea, Massachusetts have its best air quality in the last 24 hours?

The best air quality in Chelsea, Massachusetts was recorded at 02:00:00 on 2025-07-29.

What is the real-time air quality index for Chelsea, Massachusetts?

The real-time air quality index in Chelsea, Massachusetts is 66, currently categorized as Moderate.

Which pollutant is found most often in Chelsea, Massachusetts?

The most common pollutant in Chelsea, Massachusetts is PM2.5.

What can I do if the air quality in Chelsea, Massachusetts is poor?

If the air quality in Chelsea, Massachusetts is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Chelsea, Massachusetts?

The measured PM_2.5 levels in Chelsea, Massachusetts at present are 16.561 μg/m³.

What are the current PM₁₀ levels at Chelsea, Massachusetts?

The current PM₁₀ levels in Chelsea, Massachusetts are 72.277 μg/m³.

What are the current carbon monoxide (CO) levels at Chelsea, Massachusetts?

The current carbon monoxide (CO) level in Chelsea, Massachusetts is 0.305 ppm.

What are the current sulfur dioxide (SO₂) levels at Chelsea, Massachusetts?

The current sulfur dioxide (SO₂) levels in Chelsea, Massachusetts are 0.38 ppb.

What are the current ozone (O₃) levels at Chelsea, Massachusetts?

The current ozone (O₃) levels at Chelsea, Massachusetts is 33.438 ppm.

What are the current nitrogen dioxide (NO₂) levels at Chelsea, Massachusetts?

The current nitrogen dioxide (NO₂) levels at Chelsea, Massachusetts is 7.807 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions