What is the sulfur dioxide (SO2) level in Sudbury, Massachusetts at the moment?

Currently, Sudbury, Massachusetts has a sulfur dioxide (SO2) concentration of 0.41 ppb.

What is the ozone (O3) level in Sudbury, Massachusetts at the moment?

The current ozone (O3) level in Sudbury, Massachusetts at the moment is 43.664 ppm.

What is the nitrogen dioxide (NO2) level in Sudbury, Massachusetts at the moment?

Nitrogen dioxide (NO2) level in Sudbury, Massachusetts at the moment is 2.87 ppb.

Live air quality index in Sudbury, Massachusetts today

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

Stay updated with real-time air quality in Sudbury, 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)

Good

Sudbury, Massachusetts

Last updated: ... (Local time)

Major air pollutants in Sudbury, Massachusetts

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.11 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

37.00 μg/m³

155

255

425

605+

Ozone (O₃)

39.78 ppb

201

201+

Sulfur Dioxide (SO₂)

0.49 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.52 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Sudbury, Massachusetts

Get Live Pollen Counts

Sudbury, Massachusetts

Scroll To Air Quality Map

Track live Sudbury, Massachusetts air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-13T01:00:00.000Z	27 \| good	5.346 \| good	19.317 \| good	23.149 \| good	0.437 \| good	10.777 \| good	0.242 \| good
2025-09-13T02:00:00.000Z	33 \| good	5.739 \| good	24.303 \| good	22.902 \| good	0.355 \| good	10.208 \| good	0.285 \| good
2025-09-13T03:00:00.000Z	33 \| good	6.244 \| good	22.077 \| good	21.066 \| good	0.3 \| good	10.145 \| good	0.291 \| good
2025-09-13T04:00:00.000Z	38 \| good	6.54 \| good	19.197 \| good	17.008 \| good	0.333 \| good	11.223 \| good	0.347 \| good
2025-09-13T05:00:00.000Z	33 \| good	6.204 \| good	25.45 \| good	16.038 \| good	0.339 \| good	8.797 \| good	0.361 \| good
2025-09-13T06:00:00.000Z	38 \| good	6.858 \| good	21.706 \| good	8.88 \| good	0.364 \| good	9.438 \| good	0.338 \| good
2025-09-13T07:00:00.000Z	27 \| good	5.485 \| good	21.813 \| good	10.191 \| good	0.324 \| good	7.429 \| good	0.31 \| good
2025-09-13T08:00:00.000Z	38 \| good	7.268 \| good	32.005 \| good	11.627 \| good	0.337 \| good	6.064 \| good	0.307 \| good
2025-09-13T09:00:00.000Z	38 \| good	6.819 \| good	29.145 \| good	8.528 \| good	0.324 \| good	6.72 \| good	0.266 \| good
2025-09-13T10:00:00.000Z	27 \| good	5.462 \| good	19.107 \| good	7.789 \| good	0.346 \| good	6.37 \| good	0.262 \| good
2025-09-13T11:00:00.000Z	38 \| good	6.528 \| good	15.987 \| good	6.492 \| good	0.332 \| good	5.695 \| good	0.268 \| good
2025-09-13T12:00:00.000Z	33 \| good	6.046 \| good	22.385 \| good	6.052 \| good	0.397 \| good	6.133 \| good	0.353 \| good
2025-09-13T13:00:00.000Z	33 \| good	6.249 \| good	17.029 \| good	9.086 \| good	0.41 \| good	7.298 \| good	0.298 \| good
2025-09-13T14:00:00.000Z	33 \| good	5.981 \| good	21.248 \| good	15.516 \| good	0.394 \| good	6.008 \| good	0.228 \| good
2025-09-13T15:00:00.000Z	33 \| good	5.904 \| good	22.878 \| good	25.265 \| good	0.343 \| good	5.27 \| good	0.183 \| good
2025-09-13T16:00:00.000Z	33 \| good	6.087 \| good	25.903 \| good	25.292 \| good	0.298 \| good	4.98 \| good	0.183 \| good
2025-09-13T17:00:00.000Z	33 \| good	5.881 \| good	19.789 \| good	29.86 \| good	0.427 \| good	3.901 \| good	0.183 \| good
2025-09-13T18:00:00.000Z	33 \| good	5.753 \| good	18.503 \| good	34.507 \| good	0.345 \| good	2.962 \| good	0.183 \| good
2025-09-13T19:00:00.000Z	36 \| good	5.962 \| good	39.426 \| good	33.639 \| good	0.345 \| good	3.778 \| good	0.183 \| good
2025-09-13T20:00:00.000Z	38 \| good	7.127 \| good	29.093 \| good	36.523 \| good	0.352 \| good	4.809 \| good	0.206 \| good
2025-09-13T21:00:00.000Z	36 \| good	6.423 \| good	23.198 \| good	38.812 \| good	0.424 \| good	6.977 \| good	0.23 \| good
2025-09-13T22:00:00.000Z	33 \| good	6.009 \| good	21.182 \| good	33.183 \| good	0.435 \| good	5.904 \| good	0.23 \| good
2025-09-13T23:00:00.000Z	37 \| good	6.285 \| good	15.574 \| good	40.169 \| good	0.369 \| good	4.856 \| good	0.2 \| good
2025-09-14T00:00:00.000Z	33 \| good	6.057 \| good	26.525 \| good	31.196 \| good	0.351 \| good	4.815 \| good	0.245 \| good
2025-09-14T01:00:00.000Z	33 \| good	5.944 \| good	26.788 \| good	31.232 \| good	0.352 \| good	5.345 \| good	0.223 \| good
2025-09-14T02:00:00.000Z	31 \| good	4.718 \| good	20.174 \| good	32.953 \| good	0.372 \| good	4.923 \| good	0.223 \| good
2025-09-14T03:00:00.000Z	22 \| good	4.439 \| good	19.356 \| good	23.674 \| good	0.679 \| good	5.748 \| good	0.17 \| good
2025-09-14T04:00:00.000Z	33 \| good	5.686 \| good	22.202 \| good	25.749 \| good	0.382 \| good	4.482 \| good	0.27 \| good
2025-09-14T05:00:00.000Z	33 \| good	5.685 \| good	24.069 \| good	23.465 \| good	0.349 \| good	4.436 \| good	0.223 \| good
2025-09-14T06:00:00.000Z	27 \| good	5.444 \| good	22.175 \| good	23.638 \| good	0.409 \| good	4.761 \| good	0.223 \| good
2025-09-14T07:00:00.000Z	27 \| good	5.367 \| good	21.979 \| good	23.265 \| good	0.373 \| good	4.653 \| good	0.247 \| good
2025-09-14T08:00:00.000Z	27 \| good	5.362 \| good	15.783 \| good	22.606 \| good	0.357 \| good	5.723 \| good	0.247 \| good
2025-09-14T09:00:00.000Z	27 \| good	5.455 \| good	13.491 \| good	23.877 \| good	0.325 \| good	2.712 \| good	0.223 \| good
2025-09-14T10:00:00.000Z	27 \| good	5.444 \| good	18.514 \| good	21.718 \| good	0.324 \| good	4.736 \| good	0.207 \| good
2025-09-14T11:00:00.000Z	33 \| good	5.583 \| good	11.71 \| good	15.287 \| good	0.333 \| good	4.485 \| good	0.222 \| good
2025-09-14T12:00:00.000Z	33 \| good	5.784 \| good	26.693 \| good	22.103 \| good	0.283 \| good	4.256 \| good	0.23 \| good
2025-09-14T13:00:00.000Z	33 \| good	5.694 \| good	17.12 \| good	18.507 \| good	0.352 \| good	4.937 \| good	0.315 \| good
2025-09-14T14:00:00.000Z	27 \| good	5.484 \| good	15.53 \| good	25.152 \| good	0.325 \| good	4.958 \| good	0.268 \| good
2025-09-14T15:00:00.000Z	33 \| good	6.046 \| good	22.277 \| good	26.751 \| good	0.319 \| good	3.393 \| good	0.247 \| good
2025-09-14T16:00:00.000Z	38 \| good	6.51 \| good	23.216 \| good	25.537 \| good	0.307 \| good	2.878 \| good	0.223 \| good
2025-09-14T17:00:00.000Z	38 \| good	6.806 \| good	21.56 \| good	33.429 \| good	0.322 \| good	3.432 \| good	0.2 \| good
2025-09-14T18:00:00.000Z	38 \| good	7.347 \| good	14.264 \| good	37.51 \| good	0.365 \| good	3.012 \| good	0.223 \| good
2025-09-14T19:00:00.000Z	44 \| good	7.898 \| good	17.134 \| good	38.829 \| good	0.405 \| good	2.971 \| good	0.223 \| good
2025-09-14T20:00:00.000Z	44 \| good	7.713 \| good	19.253 \| good	40.599 \| good	0.423 \| good	2.171 \| good	0.245 \| good
2025-09-14T21:00:00.000Z	41 \| good	7.401 \| good	19.999 \| good	43.664 \| good	0.41 \| good	2.87 \| good	0.245 \| good
2025-09-14T22:00:00.000Z	49 \| good	8.851 \| good	36.107 \| good	38.774 \| good	0.425 \| good	5.742 \| good	0.245 \| good
2025-09-14T23:00:00.000Z	49 \| good	9.113 \| good	36.996 \| good	39.776 \| good	0.494 \| good	8.515 \| good	0.236 \| good
2025-09-15T00:00:00.000Z	49 \| good	9.133 \| good	38.19 \| good	35.072 \| good	0.429 \| good	10.693 \| good	0.326 \| good
2025-09-15T00:00:00.000Z	49 \| good	9.113 \| good	36.996 \| good	39.776 \| good	0.494 \| good	8.515 \| good	0.236 \| good
2025-09-14T23:00:00.000Z	69 \| moderate	19.173 \| fine	84.731 \| fine	36.336 \| good	0.86 \| good	17.47 \| good	0.332 \| good
2025-09-15T00:00:00.000Z	73 \| moderate	20.927 \| fine	92.167 \| fine	31.588 \| good	0.986 \| good	24.675 \| good	0.4 \| good
2025-09-15T01:00:00.000Z	75 \| moderate	22.203 \| fine	97.101 \| fine	27.605 \| good	1.149 \| good	25.335 \| good	0.41 \| good
2025-09-15T02:00:00.000Z	77 \| moderate	23.496 \| fine	102.532 \| fine	24.852 \| good	1.311 \| good	25.995 \| good	0.419 \| good
2025-09-15T03:00:00.000Z	77 \| moderate	22.557 \| fine	98.707 \| fine	24.054 \| good	1.473 \| good	26.655 \| good	0.428 \| good
2025-09-15T04:00:00.000Z	75 \| moderate	22.163 \| fine	96.806 \| fine	23.418 \| good	1.423 \| good	25.986 \| good	0.429 \| good
2025-09-15T05:00:00.000Z	75 \| moderate	21.732 \| fine	94.893 \| fine	22.71 \| good	1.373 \| good	25.318 \| good	0.429 \| good
2025-09-15T06:00:00.000Z	73 \| moderate	20.967 \| fine	92.183 \| fine	22.263 \| good	1.322 \| good	24.65 \| good	0.429 \| good
2025-09-15T07:00:00.000Z	73 \| moderate	20.61 \| fine	90.643 \| fine	21.264 \| good	1.136 \| good	21.062 \| good	0.399 \| good
2025-09-15T08:00:00.000Z	71 \| moderate	20.295 \| fine	89.09 \| fine	19.869 \| good	0.95 \| good	17.475 \| good	0.368 \| good
2025-09-15T09:00:00.000Z	75 \| moderate	21.612 \| fine	94.734 \| fine	18.114 \| good	0.764 \| good	13.887 \| good	0.338 \| good
2025-09-15T10:00:00.000Z	71 \| moderate	19.901 \| fine	87.716 \| fine	15 \| good	0.829 \| good	12.235 \| good	0.326 \| good
2025-09-15T11:00:00.000Z	69 \| moderate	19.357 \| fine	85.308 \| fine	11.149 \| good	0.895 \| good	10.582 \| good	0.315 \| good
2025-09-15T12:00:00.000Z	71 \| moderate	20.29 \| fine	89.234 \| fine	14.908 \| good	0.96 \| good	8.929 \| good	0.303 \| good
2025-09-15T13:00:00.000Z	79 \| moderate	24.37 \| fine	106.488 \| fine	24.468 \| good	1.036 \| good	7.142 \| good	0.276 \| good
2025-09-15T14:00:00.000Z	82 \| moderate	26.323 \| fine	114.251 \| fine	35.263 \| good	1.112 \| good	5.355 \| good	0.249 \| good
2025-09-15T15:00:00.000Z	79 \| moderate	24.122 \| fine	105.523 \| fine	43.921 \| good	1.188 \| good	3.567 \| good	0.221 \| good
2025-09-15T16:00:00.000Z	71 \| moderate	19.997 \| fine	88.096 \| fine	48.408 \| good	1.069 \| good	3.025 \| good	0.211 \| good
2025-09-15T17:00:00.000Z	66 \| moderate	17.155 \| fine	76.376 \| fine	51.521 \| good	0.95 \| good	2.483 \| good	0.201 \| good
2025-09-15T18:00:00.000Z	64 \| moderate	16.35 \| fine	72.674 \| fine	54.394 \| good	0.832 \| good	1.94 \| good	0.191 \| good
2025-09-15T19:00:00.000Z	62 \| moderate	15.376 \| fine	68.624 \| fine	53.605 \| good	0.811 \| good	2.287 \| good	0.19 \| good
2025-09-15T20:00:00.000Z	60 \| moderate	13.75 \| fine	62.031 \| fine	47.701 \| good	0.79 \| good	2.634 \| good	0.19 \| good
2025-09-15T21:00:00.000Z	56 \| moderate	12.065 \| good	54.042 \| good	42.544 \| good	0.769 \| good	2.981 \| good	0.19 \| good
2025-09-15T22:00:00.000Z	52 \| moderate	10.029 \| good	44.453 \| good	37.16 \| good	0.876 \| good	5.586 \| good	0.207 \| good
2025-09-15T23:00:00.000Z	52 \| moderate	10.071 \| good	44.929 \| good	30.695 \| good	0.983 \| good	8.191 \| good	0.225 \| good
2025-09-16T00:00:00.000Z	56 \| moderate	11.688 \| good	51.983 \| good	24.488 \| good	1.09 \| good	10.795 \| good	0.242 \| good
2025-09-16T01:00:00.000Z	58 \| moderate	12.559 \| fine	56.872 \| fine	20.381 \| good	1.114 \| good	11.123 \| good	0.243 \| good
2025-09-16T02:00:00.000Z	56 \| moderate	12.229 \| fine	54.995 \| good	19.234 \| good	1.138 \| good	11.45 \| good	0.244 \| good
2025-09-16T03:00:00.000Z	56 \| moderate	12.217 \| fine	54.522 \| good	18.857 \| good	1.162 \| good	11.777 \| good	0.245 \| good
2025-09-16T04:00:00.000Z	56 \| moderate	12.175 \| fine	54.552 \| good	17.568 \| good	1.133 \| good	11.687 \| good	0.246 \| good
2025-09-16T05:00:00.000Z	56 \| moderate	12.417 \| fine	55.95 \| fine	16.132 \| good	1.105 \| good	11.597 \| good	0.248 \| good
2025-09-16T06:00:00.000Z	56 \| moderate	12.11 \| fine	54.135 \| good	14.174 \| good	1.076 \| good	11.507 \| good	0.249 \| good
2025-09-16T07:00:00.000Z	56 \| moderate	11.735 \| good	52.609 \| good	11.847 \| good	1.032 \| good	11.351 \| good	0.249 \| good
2025-09-16T08:00:00.000Z	56 \| moderate	11.881 \| good	52.982 \| good	11.362 \| good	0.988 \| good	11.195 \| good	0.249 \| good
2025-09-16T09:00:00.000Z	58 \| moderate	12.694 \| fine	57 \| fine	11.671 \| good	0.944 \| good	11.039 \| good	0.248 \| good
2025-09-16T10:00:00.000Z	60 \| moderate	13.581 \| fine	61.189 \| fine	10.135 \| good	0.948 \| good	11.404 \| good	0.27 \| good
2025-09-16T11:00:00.000Z	64 \| moderate	15.923 \| fine	71.178 \| fine	9.538 \| good	0.953 \| good	11.768 \| good	0.292 \| good
2025-09-16T12:00:00.000Z	64 \| moderate	16.168 \| fine	71.693 \| fine	16.088 \| good	0.957 \| good	12.132 \| good	0.314 \| good
2025-09-16T13:00:00.000Z	62 \| moderate	14.9 \| fine	66.445 \| fine	25.788 \| good	1.123 \| good	9.669 \| good	0.277 \| good
2025-09-16T14:00:00.000Z	62 \| moderate	15.289 \| fine	68.186 \| fine	35.641 \| good	1.288 \| good	7.206 \| good	0.239 \| good
2025-09-16T15:00:00.000Z	66 \| moderate	16.557 \| fine	73.086 \| fine	43.953 \| good	1.454 \| good	4.743 \| good	0.201 \| good
2025-09-16T16:00:00.000Z	66 \| moderate	17.492 \| fine	77.92 \| fine	49.162 \| good	1.255 \| good	3.982 \| good	0.195 \| good
2025-09-16T17:00:00.000Z	66 \| moderate	17.431 \| fine	77.632 \| fine	52.993 \| good	1.057 \| good	3.22 \| good	0.19 \| good
2025-09-16T18:00:00.000Z	66 \| moderate	17.104 \| fine	75.82 \| fine	56.624 \| fine	0.858 \| good	2.458 \| good	0.184 \| good
2025-09-16T19:00:00.000Z	64 \| moderate	16.073 \| fine	71.596 \| fine	58.375 \| fine	0.828 \| good	2.693 \| good	0.185 \| good
2025-09-16T20:00:00.000Z	60 \| moderate	14.445 \| fine	64.269 \| fine	55.112 \| fine	0.798 \| good	2.927 \| good	0.186 \| good
2025-09-16T21:00:00.000Z	52 \| moderate	10.048 \| good	44.685 \| good	38.319 \| good	0.767 \| good	3.162 \| good	0.188 \| good
2025-09-16T22:00:00.000Z	27 \| good	4.538 \| good	19.556 \| good	26.023 \| good	0.832 \| good	5.741 \| good	0.206 \| good

Sudbury

Get reliable air quality data to drive your business

Sudbury, Massachusetts air quality map: Stay updated on AQI near you

0.24ppm

How accurate is Massachusetts, USA air quality data?

Air quality and pollutant data for Massachusetts, 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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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How often is air quality information updated for Sudbury, Massachusetts?

The air quality information for Sudbury, Massachusetts is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Sudbury, Massachusetts at its worst?

In the past 24 hours, the air quality in Sudbury, Massachusetts was at its worst at 08:00:00 on 2025-09-14.

When did Sudbury, Massachusetts experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Sudbury, Massachusetts was observed at 03:00:00 on 2025-09-14.

What is the AQI in Sudbury, Massachusetts right now?

As of now, the AQI in Sudbury, Massachusetts is 41, indicating Good conditions.

What is the most common type of pollution in Sudbury, Massachusetts?

Sudbury, Massachusetts air has the highest levels of O3.

What should I do in case of poor air quality in Sudbury, Massachusetts?

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

What is the PM_2.5 level in Sudbury, Massachusetts at the moment?

PM_2.5 levels in Sudbury, Massachusetts are currently 7.401 μg/m³.

What is the PM₁₀ level in Sudbury, Massachusetts at the moment?

The PM₁₀ concentration in Sudbury, Massachusetts is 19.999 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Sudbury, Massachusetts at the moment?

The current carbon monoxide (CO) concentration in Sudbury, Massachusetts is 0.245 ppm.

What is the sulfur dioxide (SO₂) level in Sudbury, Massachusetts at the moment?

Currently, Sudbury, Massachusetts has a sulfur dioxide (SO₂) concentration of 0.41 ppb.

What is the ozone (O₃) level in Sudbury, Massachusetts at the moment?

The current ozone (O₃) level in Sudbury, Massachusetts at the moment is 43.664 ppm.

What is the nitrogen dioxide (NO₂) level in Sudbury, Massachusetts at the moment?

Nitrogen dioxide (NO₂) level in Sudbury, Massachusetts at the moment is 2.87 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-13T01:00:00.000Z	27 \| good	5.346 \| good	19.317 \| good	23.149 \| good	0.437 \| good	10.777 \| good	0.242 \| good
2025-09-13T02:00:00.000Z	33 \| good	5.739 \| good	24.303 \| good	22.902 \| good	0.355 \| good	10.208 \| good	0.285 \| good
2025-09-13T03:00:00.000Z	33 \| good	6.244 \| good	22.077 \| good	21.066 \| good	0.3 \| good	10.145 \| good	0.291 \| good
2025-09-13T04:00:00.000Z	38 \| good	6.54 \| good	19.197 \| good	17.008 \| good	0.333 \| good	11.223 \| good	0.347 \| good
2025-09-13T05:00:00.000Z	33 \| good	6.204 \| good	25.45 \| good	16.038 \| good	0.339 \| good	8.797 \| good	0.361 \| good
2025-09-13T06:00:00.000Z	38 \| good	6.858 \| good	21.706 \| good	8.88 \| good	0.364 \| good	9.438 \| good	0.338 \| good
2025-09-13T07:00:00.000Z	27 \| good	5.485 \| good	21.813 \| good	10.191 \| good	0.324 \| good	7.429 \| good	0.31 \| good
2025-09-13T08:00:00.000Z	38 \| good	7.268 \| good	32.005 \| good	11.627 \| good	0.337 \| good	6.064 \| good	0.307 \| good
2025-09-13T09:00:00.000Z	38 \| good	6.819 \| good	29.145 \| good	8.528 \| good	0.324 \| good	6.72 \| good	0.266 \| good
2025-09-13T10:00:00.000Z	27 \| good	5.462 \| good	19.107 \| good	7.789 \| good	0.346 \| good	6.37 \| good	0.262 \| good
2025-09-13T11:00:00.000Z	38 \| good	6.528 \| good	15.987 \| good	6.492 \| good	0.332 \| good	5.695 \| good	0.268 \| good
2025-09-13T12:00:00.000Z	33 \| good	6.046 \| good	22.385 \| good	6.052 \| good	0.397 \| good	6.133 \| good	0.353 \| good
2025-09-13T13:00:00.000Z	33 \| good	6.249 \| good	17.029 \| good	9.086 \| good	0.41 \| good	7.298 \| good	0.298 \| good
2025-09-13T14:00:00.000Z	33 \| good	5.981 \| good	21.248 \| good	15.516 \| good	0.394 \| good	6.008 \| good	0.228 \| good
2025-09-13T15:00:00.000Z	33 \| good	5.904 \| good	22.878 \| good	25.265 \| good	0.343 \| good	5.27 \| good	0.183 \| good
2025-09-13T16:00:00.000Z	33 \| good	6.087 \| good	25.903 \| good	25.292 \| good	0.298 \| good	4.98 \| good	0.183 \| good
2025-09-13T17:00:00.000Z	33 \| good	5.881 \| good	19.789 \| good	29.86 \| good	0.427 \| good	3.901 \| good	0.183 \| good
2025-09-13T18:00:00.000Z	33 \| good	5.753 \| good	18.503 \| good	34.507 \| good	0.345 \| good	2.962 \| good	0.183 \| good
2025-09-13T19:00:00.000Z	36 \| good	5.962 \| good	39.426 \| good	33.639 \| good	0.345 \| good	3.778 \| good	0.183 \| good
2025-09-13T20:00:00.000Z	38 \| good	7.127 \| good	29.093 \| good	36.523 \| good	0.352 \| good	4.809 \| good	0.206 \| good
2025-09-13T21:00:00.000Z	36 \| good	6.423 \| good	23.198 \| good	38.812 \| good	0.424 \| good	6.977 \| good	0.23 \| good
2025-09-13T22:00:00.000Z	33 \| good	6.009 \| good	21.182 \| good	33.183 \| good	0.435 \| good	5.904 \| good	0.23 \| good
2025-09-13T23:00:00.000Z	37 \| good	6.285 \| good	15.574 \| good	40.169 \| good	0.369 \| good	4.856 \| good	0.2 \| good
2025-09-14T00:00:00.000Z	33 \| good	6.057 \| good	26.525 \| good	31.196 \| good	0.351 \| good	4.815 \| good	0.245 \| good
2025-09-14T01:00:00.000Z	33 \| good	5.944 \| good	26.788 \| good	31.232 \| good	0.352 \| good	5.345 \| good	0.223 \| good
2025-09-14T02:00:00.000Z	31 \| good	4.718 \| good	20.174 \| good	32.953 \| good	0.372 \| good	4.923 \| good	0.223 \| good
2025-09-14T03:00:00.000Z	22 \| good	4.439 \| good	19.356 \| good	23.674 \| good	0.679 \| good	5.748 \| good	0.17 \| good
2025-09-14T04:00:00.000Z	33 \| good	5.686 \| good	22.202 \| good	25.749 \| good	0.382 \| good	4.482 \| good	0.27 \| good
2025-09-14T05:00:00.000Z	33 \| good	5.685 \| good	24.069 \| good	23.465 \| good	0.349 \| good	4.436 \| good	0.223 \| good
2025-09-14T06:00:00.000Z	27 \| good	5.444 \| good	22.175 \| good	23.638 \| good	0.409 \| good	4.761 \| good	0.223 \| good
2025-09-14T07:00:00.000Z	27 \| good	5.367 \| good	21.979 \| good	23.265 \| good	0.373 \| good	4.653 \| good	0.247 \| good
2025-09-14T08:00:00.000Z	27 \| good	5.362 \| good	15.783 \| good	22.606 \| good	0.357 \| good	5.723 \| good	0.247 \| good
2025-09-14T09:00:00.000Z	27 \| good	5.455 \| good	13.491 \| good	23.877 \| good	0.325 \| good	2.712 \| good	0.223 \| good
2025-09-14T10:00:00.000Z	27 \| good	5.444 \| good	18.514 \| good	21.718 \| good	0.324 \| good	4.736 \| good	0.207 \| good
2025-09-14T11:00:00.000Z	33 \| good	5.583 \| good	11.71 \| good	15.287 \| good	0.333 \| good	4.485 \| good	0.222 \| good
2025-09-14T12:00:00.000Z	33 \| good	5.784 \| good	26.693 \| good	22.103 \| good	0.283 \| good	4.256 \| good	0.23 \| good
2025-09-14T13:00:00.000Z	33 \| good	5.694 \| good	17.12 \| good	18.507 \| good	0.352 \| good	4.937 \| good	0.315 \| good
2025-09-14T14:00:00.000Z	27 \| good	5.484 \| good	15.53 \| good	25.152 \| good	0.325 \| good	4.958 \| good	0.268 \| good
2025-09-14T15:00:00.000Z	33 \| good	6.046 \| good	22.277 \| good	26.751 \| good	0.319 \| good	3.393 \| good	0.247 \| good
2025-09-14T16:00:00.000Z	38 \| good	6.51 \| good	23.216 \| good	25.537 \| good	0.307 \| good	2.878 \| good	0.223 \| good
2025-09-14T17:00:00.000Z	38 \| good	6.806 \| good	21.56 \| good	33.429 \| good	0.322 \| good	3.432 \| good	0.2 \| good
2025-09-14T18:00:00.000Z	38 \| good	7.347 \| good	14.264 \| good	37.51 \| good	0.365 \| good	3.012 \| good	0.223 \| good
2025-09-14T19:00:00.000Z	44 \| good	7.898 \| good	17.134 \| good	38.829 \| good	0.405 \| good	2.971 \| good	0.223 \| good
2025-09-14T20:00:00.000Z	44 \| good	7.713 \| good	19.253 \| good	40.599 \| good	0.423 \| good	2.171 \| good	0.245 \| good
2025-09-14T21:00:00.000Z	41 \| good	7.401 \| good	19.999 \| good	43.664 \| good	0.41 \| good	2.87 \| good	0.245 \| good
2025-09-14T22:00:00.000Z	49 \| good	8.851 \| good	36.107 \| good	38.774 \| good	0.425 \| good	5.742 \| good	0.245 \| good
2025-09-14T23:00:00.000Z	49 \| good	9.113 \| good	36.996 \| good	39.776 \| good	0.494 \| good	8.515 \| good	0.236 \| good
2025-09-15T00:00:00.000Z	49 \| good	9.133 \| good	38.19 \| good	35.072 \| good	0.429 \| good	10.693 \| good	0.326 \| good
2025-09-15T00:00:00.000Z	49 \| good	9.113 \| good	36.996 \| good	39.776 \| good	0.494 \| good	8.515 \| good	0.236 \| good
2025-09-14T23:00:00.000Z	69 \| moderate	19.173 \| fine	84.731 \| fine	36.336 \| good	0.86 \| good	17.47 \| good	0.332 \| good
2025-09-15T00:00:00.000Z	73 \| moderate	20.927 \| fine	92.167 \| fine	31.588 \| good	0.986 \| good	24.675 \| good	0.4 \| good
2025-09-15T01:00:00.000Z	75 \| moderate	22.203 \| fine	97.101 \| fine	27.605 \| good	1.149 \| good	25.335 \| good	0.41 \| good
2025-09-15T02:00:00.000Z	77 \| moderate	23.496 \| fine	102.532 \| fine	24.852 \| good	1.311 \| good	25.995 \| good	0.419 \| good
2025-09-15T03:00:00.000Z	77 \| moderate	22.557 \| fine	98.707 \| fine	24.054 \| good	1.473 \| good	26.655 \| good	0.428 \| good
2025-09-15T04:00:00.000Z	75 \| moderate	22.163 \| fine	96.806 \| fine	23.418 \| good	1.423 \| good	25.986 \| good	0.429 \| good
2025-09-15T05:00:00.000Z	75 \| moderate	21.732 \| fine	94.893 \| fine	22.71 \| good	1.373 \| good	25.318 \| good	0.429 \| good
2025-09-15T06:00:00.000Z	73 \| moderate	20.967 \| fine	92.183 \| fine	22.263 \| good	1.322 \| good	24.65 \| good	0.429 \| good
2025-09-15T07:00:00.000Z	73 \| moderate	20.61 \| fine	90.643 \| fine	21.264 \| good	1.136 \| good	21.062 \| good	0.399 \| good
2025-09-15T08:00:00.000Z	71 \| moderate	20.295 \| fine	89.09 \| fine	19.869 \| good	0.95 \| good	17.475 \| good	0.368 \| good
2025-09-15T09:00:00.000Z	75 \| moderate	21.612 \| fine	94.734 \| fine	18.114 \| good	0.764 \| good	13.887 \| good	0.338 \| good
2025-09-15T10:00:00.000Z	71 \| moderate	19.901 \| fine	87.716 \| fine	15 \| good	0.829 \| good	12.235 \| good	0.326 \| good
2025-09-15T11:00:00.000Z	69 \| moderate	19.357 \| fine	85.308 \| fine	11.149 \| good	0.895 \| good	10.582 \| good	0.315 \| good
2025-09-15T12:00:00.000Z	71 \| moderate	20.29 \| fine	89.234 \| fine	14.908 \| good	0.96 \| good	8.929 \| good	0.303 \| good
2025-09-15T13:00:00.000Z	79 \| moderate	24.37 \| fine	106.488 \| fine	24.468 \| good	1.036 \| good	7.142 \| good	0.276 \| good
2025-09-15T14:00:00.000Z	82 \| moderate	26.323 \| fine	114.251 \| fine	35.263 \| good	1.112 \| good	5.355 \| good	0.249 \| good
2025-09-15T15:00:00.000Z	79 \| moderate	24.122 \| fine	105.523 \| fine	43.921 \| good	1.188 \| good	3.567 \| good	0.221 \| good
2025-09-15T16:00:00.000Z	71 \| moderate	19.997 \| fine	88.096 \| fine	48.408 \| good	1.069 \| good	3.025 \| good	0.211 \| good
2025-09-15T17:00:00.000Z	66 \| moderate	17.155 \| fine	76.376 \| fine	51.521 \| good	0.95 \| good	2.483 \| good	0.201 \| good
2025-09-15T18:00:00.000Z	64 \| moderate	16.35 \| fine	72.674 \| fine	54.394 \| good	0.832 \| good	1.94 \| good	0.191 \| good
2025-09-15T19:00:00.000Z	62 \| moderate	15.376 \| fine	68.624 \| fine	53.605 \| good	0.811 \| good	2.287 \| good	0.19 \| good
2025-09-15T20:00:00.000Z	60 \| moderate	13.75 \| fine	62.031 \| fine	47.701 \| good	0.79 \| good	2.634 \| good	0.19 \| good
2025-09-15T21:00:00.000Z	56 \| moderate	12.065 \| good	54.042 \| good	42.544 \| good	0.769 \| good	2.981 \| good	0.19 \| good
2025-09-15T22:00:00.000Z	52 \| moderate	10.029 \| good	44.453 \| good	37.16 \| good	0.876 \| good	5.586 \| good	0.207 \| good
2025-09-15T23:00:00.000Z	52 \| moderate	10.071 \| good	44.929 \| good	30.695 \| good	0.983 \| good	8.191 \| good	0.225 \| good
2025-09-16T00:00:00.000Z	56 \| moderate	11.688 \| good	51.983 \| good	24.488 \| good	1.09 \| good	10.795 \| good	0.242 \| good
2025-09-16T01:00:00.000Z	58 \| moderate	12.559 \| fine	56.872 \| fine	20.381 \| good	1.114 \| good	11.123 \| good	0.243 \| good
2025-09-16T02:00:00.000Z	56 \| moderate	12.229 \| fine	54.995 \| good	19.234 \| good	1.138 \| good	11.45 \| good	0.244 \| good
2025-09-16T03:00:00.000Z	56 \| moderate	12.217 \| fine	54.522 \| good	18.857 \| good	1.162 \| good	11.777 \| good	0.245 \| good
2025-09-16T04:00:00.000Z	56 \| moderate	12.175 \| fine	54.552 \| good	17.568 \| good	1.133 \| good	11.687 \| good	0.246 \| good
2025-09-16T05:00:00.000Z	56 \| moderate	12.417 \| fine	55.95 \| fine	16.132 \| good	1.105 \| good	11.597 \| good	0.248 \| good
2025-09-16T06:00:00.000Z	56 \| moderate	12.11 \| fine	54.135 \| good	14.174 \| good	1.076 \| good	11.507 \| good	0.249 \| good
2025-09-16T07:00:00.000Z	56 \| moderate	11.735 \| good	52.609 \| good	11.847 \| good	1.032 \| good	11.351 \| good	0.249 \| good
2025-09-16T08:00:00.000Z	56 \| moderate	11.881 \| good	52.982 \| good	11.362 \| good	0.988 \| good	11.195 \| good	0.249 \| good
2025-09-16T09:00:00.000Z	58 \| moderate	12.694 \| fine	57 \| fine	11.671 \| good	0.944 \| good	11.039 \| good	0.248 \| good
2025-09-16T10:00:00.000Z	60 \| moderate	13.581 \| fine	61.189 \| fine	10.135 \| good	0.948 \| good	11.404 \| good	0.27 \| good
2025-09-16T11:00:00.000Z	64 \| moderate	15.923 \| fine	71.178 \| fine	9.538 \| good	0.953 \| good	11.768 \| good	0.292 \| good
2025-09-16T12:00:00.000Z	64 \| moderate	16.168 \| fine	71.693 \| fine	16.088 \| good	0.957 \| good	12.132 \| good	0.314 \| good
2025-09-16T13:00:00.000Z	62 \| moderate	14.9 \| fine	66.445 \| fine	25.788 \| good	1.123 \| good	9.669 \| good	0.277 \| good
2025-09-16T14:00:00.000Z	62 \| moderate	15.289 \| fine	68.186 \| fine	35.641 \| good	1.288 \| good	7.206 \| good	0.239 \| good
2025-09-16T15:00:00.000Z	66 \| moderate	16.557 \| fine	73.086 \| fine	43.953 \| good	1.454 \| good	4.743 \| good	0.201 \| good
2025-09-16T16:00:00.000Z	66 \| moderate	17.492 \| fine	77.92 \| fine	49.162 \| good	1.255 \| good	3.982 \| good	0.195 \| good
2025-09-16T17:00:00.000Z	66 \| moderate	17.431 \| fine	77.632 \| fine	52.993 \| good	1.057 \| good	3.22 \| good	0.19 \| good
2025-09-16T18:00:00.000Z	66 \| moderate	17.104 \| fine	75.82 \| fine	56.624 \| fine	0.858 \| good	2.458 \| good	0.184 \| good
2025-09-16T19:00:00.000Z	64 \| moderate	16.073 \| fine	71.596 \| fine	58.375 \| fine	0.828 \| good	2.693 \| good	0.185 \| good
2025-09-16T20:00:00.000Z	60 \| moderate	14.445 \| fine	64.269 \| fine	55.112 \| fine	0.798 \| good	2.927 \| good	0.186 \| good
2025-09-16T21:00:00.000Z	52 \| moderate	10.048 \| good	44.685 \| good	38.319 \| good	0.767 \| good	3.162 \| good	0.188 \| good
2025-09-16T22:00:00.000Z	27 \| good	4.538 \| good	19.556 \| good	26.023 \| good	0.832 \| good	5.741 \| good	0.206 \| good

Live air quality index in Sudbury, Massachusetts today

Major air pollutants in Sudbury, Massachusetts

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Sudbury, Massachusetts air quality map: Stay updated on AQI near you

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Maynard, Massachusetts

Weston, Massachusetts

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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 Sudbury, Massachusetts at the moment?

What is the PM₁₀ level in Sudbury, Massachusetts at the moment?

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What is the ozone (O₃) level in Sudbury, Massachusetts at the moment?

What is the nitrogen dioxide (NO₂) level in Sudbury, Massachusetts at the moment?