What are the current PM10 levels at Boston, Massachusetts?

The current PM10 levels in Boston, Massachusetts are 12.796 μg/m3.

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

The current sulfur dioxide (SO2) levels in Boston, Massachusetts are 1.053 ppb.

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

The current ozone (O3) levels at Boston, Massachusetts is 22.255 ppm.

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

The current nitrogen dioxide (NO2) levels at Boston, Massachusetts is 4.797 ppb.

Real-time air quality index in Boston, Massachusetts today

Q: What are the current PM2.5 levels in Boston, Massachusetts?

The measured PM2.5 levels in Boston, Massachusetts at present are 2.839 μg/m3.

Stay updated with real-time air quality in Boston, 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

Boston, Massachusetts

Last updated: ... (Local time)

Common air pollutants in Boston, Massachusetts

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

2.84 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

12.80 μg/m³

155

255

425

605+

Ozone (O₃)

22.25 ppb

201

201+

Sulfur Dioxide (SO₂)

1.05 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.80 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Boston, Massachusetts

Get Live Pollen Counts

Boston, Massachusetts

Scroll To Air Quality Map

Track live Boston, Massachusetts air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-27T00:00:00.000Z	33 \| good	4.713 \| good	14.521 \| good	36.036 \| good	0.696 \| good	1.208 \| good	0.147 \| good
2026-09-27T01:00:00.000Z	33 \| good	4.931 \| good	15.473 \| good	35.593 \| good	0.77 \| good	1.761 \| good	0.147 \| good
2026-09-27T02:00:00.000Z	34 \| good	5.695 \| good	18.06 \| good	36.842 \| good	0.779 \| good	1.69 \| good	0.145 \| good
2026-09-27T03:00:00.000Z	31 \| good	2.965 \| good	12.122 \| good	32.967 \| good	0.128 \| good	1.147 \| good	0.131 \| good
2026-09-27T04:00:00.000Z	33 \| good	5.821 \| good	18.742 \| good	36.114 \| good	0.762 \| good	1.689 \| good	0.147 \| good
2026-09-27T05:00:00.000Z	33 \| good	5.704 \| good	17.565 \| good	35.536 \| good	0.511 \| good	1.569 \| good	0.147 \| good
2026-09-27T06:00:00.000Z	31 \| good	5.007 \| good	15.1 \| good	32.986 \| good	0.735 \| good	1.593 \| good	0.138 \| good
2026-09-27T07:00:00.000Z	30 \| good	5.007 \| good	15.1 \| good	31.999 \| good	0.735 \| good	1.598 \| good	0.138 \| good
2026-09-27T08:00:00.000Z	30 \| good	4.131 \| good	12.474 \| good	31.698 \| good	0.762 \| good	0.55 \| good	0.138 \| good
2026-09-27T09:00:00.000Z	29 \| good	3.786 \| good	11.32 \| good	31.049 \| good	0.754 \| good	1.305 \| good	0.138 \| good
2026-09-27T10:00:00.000Z	30 \| good	3.113 \| good	8.934 \| good	31.629 \| good	0.717 \| good	1.505 \| good	0.138 \| good
2026-09-27T11:00:00.000Z	29 \| good	2.767 \| good	7.934 \| good	30.913 \| good	0.734 \| good	1.783 \| good	0.138 \| good
2026-09-27T12:00:00.000Z	30 \| good	2.666 \| good	7.902 \| good	31.903 \| good	0.753 \| good	1.875 \| good	0.138 \| good
2026-09-27T13:00:00.000Z	29 \| good	2.666 \| good	7.902 \| good	31.01 \| good	0.753 \| good	1.854 \| good	0.138 \| good
2026-09-27T14:00:00.000Z	28 \| good	2.207 \| good	6.276 \| good	30.483 \| good	0.753 \| good	1.861 \| good	0.145 \| good
2026-09-27T15:00:00.000Z	29 \| good	1.644 \| good	4.852 \| good	31.282 \| good	0.762 \| good	1.152 \| good	0.145 \| good
2026-09-27T16:00:00.000Z	29 \| good	1.339 \| good	3.482 \| good	30.921 \| good	0.725 \| good	1.803 \| good	0.153 \| good
2026-09-27T17:00:00.000Z	28 \| good	1.437 \| good	3.852 \| good	29.711 \| good	0.754 \| good	1.852 \| good	0.16 \| good
2026-09-27T18:00:00.000Z	28 \| good	1.68 \| good	4.987 \| good	29.823 \| good	0.764 \| good	1.976 \| good	0.153 \| good
2026-09-27T19:00:00.000Z	27 \| good	1.905 \| good	5.37 \| good	29.234 \| good	0.764 \| good	1.898 \| good	0.153 \| good
2026-09-27T20:00:00.000Z	28 \| good	1.892 \| good	5.715 \| good	29.574 \| good	0.729 \| good	2.003 \| good	0.145 \| good
2026-09-27T21:00:00.000Z	28 \| good	1.871 \| good	5.659 \| good	29.674 \| good	0.724 \| good	1.734 \| good	0.145 \| good
2026-09-27T22:00:00.000Z	27 \| good	1.862 \| good	5.308 \| good	29.476 \| good	0.772 \| good	2.318 \| good	0.145 \| good
2026-09-27T23:00:00.000Z	29 \| good	1.628 \| good	4.883 \| good	30.8 \| good	0.762 \| good	2.354 \| good	0.145 \| good
2026-09-28T00:00:00.000Z	27 \| good	1.398 \| good	3.947 \| good	28.864 \| good	0.716 \| good	2.461 \| good	0.145 \| good
2026-09-28T01:00:00.000Z	27 \| good	1.981 \| good	5.407 \| good	28.652 \| good	0.732 \| good	1.336 \| good	0.145 \| good
2026-09-28T02:00:00.000Z	27 \| good	3.858 \| good	11.551 \| good	28.936 \| good	0.724 \| good	1.077 \| good	0.145 \| good
2026-09-28T03:00:00.000Z	33 \| good	5.758 \| good	24.866 \| good	29.018 \| good	0.128 \| good	2.125 \| good	0.128 \| good
2026-09-28T04:00:00.000Z	27 \| good	5.045 \| good	15.056 \| good	28.796 \| good	0.725 \| good	0.932 \| good	0.145 \| good
2026-09-28T05:00:00.000Z	27 \| good	4.827 \| good	14.846 \| good	28.679 \| good	0.716 \| good	0.747 \| good	0.138 \| good
2026-09-28T06:00:00.000Z	27 \| good	4.214 \| good	12.58 \| good	29.401 \| good	0.733 \| good	0.684 \| good	0.138 \| good
2026-09-28T07:00:00.000Z	28 \| good	4.214 \| good	12.58 \| good	30.354 \| good	0.733 \| good	0.695 \| good	0.138 \| good
2026-09-28T08:00:00.000Z	27 \| good	3.629 \| good	10.762 \| good	29.478 \| good	0.733 \| good	0.616 \| good	0.138 \| good
2026-09-28T09:00:00.000Z	26 \| good	2.435 \| good	6.534 \| good	28.344 \| good	0.669 \| good	0.804 \| good	0.145 \| good
2026-09-28T10:00:00.000Z	28 \| good	2.14 \| good	6.109 \| good	30.05 \| good	0.715 \| good	1.282 \| good	0.152 \| good
2026-09-28T11:00:00.000Z	28 \| good	1.92 \| good	5.74 \| good	29.776 \| good	0.733 \| good	1.647 \| good	0.152 \| good
2026-09-28T12:00:00.000Z	27 \| good	1.639 \| good	4.852 \| good	28.609 \| good	0.722 \| good	2.278 \| good	0.16 \| good
2026-09-28T13:00:00.000Z	25 \| good	1.639 \| good	4.852 \| good	27.422 \| good	0.723 \| good	2.124 \| good	0.167 \| good
2026-09-28T14:00:00.000Z	27 \| good	1.172 \| good	3.537 \| good	28.699 \| good	0.965 \| good	2.862 \| good	0.217 \| good
2026-09-28T15:00:00.000Z	26 \| good	0.988 \| good	3.176 \| good	27.818 \| good	0.973 \| good	2.478 \| good	0.262 \| good
2026-09-28T16:00:00.000Z	26 \| good	0.899 \| good	2.343 \| good	27.862 \| good	0.976 \| good	2.332 \| good	0.197 \| good
2026-09-28T17:00:00.000Z	26 \| good	0.899 \| good	2.343 \| good	27.822 \| good	0.985 \| good	1.894 \| good	0.207 \| good
2026-09-28T18:00:00.000Z	25 \| good	0.942 \| good	2.656 \| good	26.795 \| good	0.967 \| good	2.545 \| good	0.207 \| good
2026-09-28T19:00:00.000Z	26 \| good	0.979 \| good	2.656 \| good	27.54 \| good	0.958 \| good	2.098 \| good	0.262 \| good
2026-09-28T20:00:00.000Z	23 \| good	1.228 \| good	5.005 \| good	24.731 \| good	1.009 \| good	2.316 \| good	0.264 \| good
2026-09-28T21:00:00.000Z	22 \| good	1.059 \| good	4.128 \| good	24.232 \| good	0.978 \| good	2.467 \| good	0.264 \| good
2026-09-28T22:00:00.000Z	20 \| good	0.642 \| good	1.957 \| good	22.293 \| good	0.973 \| good	2.017 \| good	0.262 \| good
2026-09-28T23:00:00.000Z	20 \| good	2.839 \| good	12.796 \| good	22.255 \| good	1.053 \| good	4.797 \| good	0.283 \| good
2026-09-29T00:00:00.000Z	33 \| good	5.534 \| good	23.918 \| good	25.697 \| good	0.304 \| good	7.379 \| good	0.166 \| good
2026-09-29T01:00:00.000Z	33 \| good	5.628 \| good	24.255 \| good	23.622 \| good	0.333 \| good	7.755 \| good	0.166 \| good
2026-09-29T02:00:00.000Z	27 \| good	5.354 \| good	23.174 \| good	21.232 \| good	0.361 \| good	8.427 \| good	0.168 \| good
2026-09-29T03:00:00.000Z	27 \| good	4.955 \| good	21.498 \| good	19.496 \| good	0.374 \| good	8.415 \| good	0.168 \| good
2026-09-29T04:00:00.000Z	22 \| good	4.21 \| good	18.538 \| good	18.161 \| good	0.37 \| good	7.549 \| good	0.167 \| good
2026-09-29T05:00:00.000Z	19 \| good	3.455 \| good	15.144 \| good	19.871 \| good	0.366 \| good	6.571 \| good	0.164 \| good
2026-09-29T06:00:00.000Z	19 \| good	2.939 \| good	12 \| good	21.153 \| good	0.346 \| good	5.716 \| good	0.16 \| good
2026-09-29T07:00:00.000Z	20 \| good	2.9 \| good	12 \| good	21.784 \| good	0.318 \| good	4.891 \| good	0.155 \| good
2026-09-29T08:00:00.000Z	20 \| good	2.88 \| good	11.928 \| good	21.882 \| good	0.282 \| good	4.027 \| good	0.151 \| good
2026-09-29T09:00:00.000Z	18 \| good	3.344 \| good	14.933 \| good	19.026 \| good	0.258 \| good	3.648 \| good	0.149 \| good
2026-09-29T10:00:00.000Z	22 \| good	3.553 \| good	15.447 \| good	17.351 \| good	0.253 \| good	3.82 \| good	0.149 \| good
2026-09-29T11:00:00.000Z	22 \| good	3.636 \| good	16.15 \| good	13.758 \| good	0.262 \| good	5.481 \| good	0.159 \| good
2026-09-29T12:00:00.000Z	16 \| good	3.128 \| good	13.074 \| good	13.176 \| good	0.271 \| good	6.686 \| good	0.176 \| good
2026-09-29T13:00:00.000Z	16 \| good	3.444 \| good	14.985 \| good	14.373 \| good	0.271 \| good	6.095 \| good	0.181 \| good
2026-09-29T14:00:00.000Z	16 \| good	3.002 \| good	12.852 \| good	15.001 \| good	0.267 \| good	4.73 \| good	0.176 \| good
2026-09-29T15:00:00.000Z	18 \| good	2.46 \| good	10.201 \| good	19.361 \| good	0.257 \| good	3.399 \| good	0.165 \| good
2026-09-29T16:00:00.000Z	22 \| good	2.324 \| good	9.413 \| good	24.448 \| good	0.259 \| good	2.836 \| good	0.159 \| good
2026-09-29T17:00:00.000Z	25 \| good	2.659 \| good	10.866 \| good	26.965 \| good	0.258 \| good	2.626 \| good	0.158 \| good
2026-09-29T18:00:00.000Z	24 \| good	3.04 \| good	12.839 \| good	26.415 \| good	0.261 \| good	2.723 \| good	0.159 \| good
2026-09-29T19:00:00.000Z	22 \| good	4.249 \| good	18.921 \| good	20.76 \| good	0.264 \| good	2.879 \| good	0.16 \| good
2026-09-29T20:00:00.000Z	33 \| good	5.524 \| good	23.913 \| good	18.632 \| good	0.276 \| good	3.113 \| good	0.162 \| good
2026-09-29T21:00:00.000Z	33 \| good	6.471 \| good	28.325 \| good	19.805 \| good	0.307 \| good	4.906 \| good	0.176 \| good
2026-09-29T22:00:00.000Z	38 \| good	7.061 \| good	31.117 \| good	19.572 \| good	0.348 \| good	8.148 \| good	0.2 \| good
2026-09-29T23:00:00.000Z	38 \| good	6.748 \| good	29.799 \| good	17.933 \| good	0.412 \| good	12.589 \| good	0.228 \| good
2026-09-30T00:00:00.000Z	44 \| good	7.84 \| good	34.644 \| good	18.463 \| good	0.465 \| good	13.755 \| good	0.235 \| good
2026-09-30T01:00:00.000Z	44 \| good	7.529 \| good	33.176 \| good	18.046 \| good	0.49 \| good	13.372 \| good	0.229 \| good
2026-09-30T02:00:00.000Z	38 \| good	7.325 \| good	32.254 \| good	16.229 \| good	0.506 \| good	12.641 \| good	0.223 \| good
2026-09-30T03:00:00.000Z	38 \| good	6.952 \| good	30.642 \| good	16.052 \| good	0.512 \| good	11.894 \| good	0.22 \| good
2026-09-30T04:00:00.000Z	33 \| good	6.438 \| good	28.469 \| good	18.054 \| good	0.504 \| good	10.684 \| good	0.216 \| good
2026-09-30T05:00:00.000Z	27 \| good	5.459 \| good	23.7 \| good	16.126 \| good	0.494 \| good	9.613 \| good	0.21 \| good
2026-09-30T06:00:00.000Z	27 \| good	4.601 \| good	20.103 \| good	15.332 \| good	0.485 \| good	9.04 \| good	0.206 \| good
2026-09-30T07:00:00.000Z	27 \| good	5.048 \| good	21.595 \| good	17.032 \| good	0.479 \| good	8.975 \| good	0.205 \| good
2026-09-30T08:00:00.000Z	27 \| good	5.001 \| good	21.512 \| good	17.979 \| good	0.475 \| good	9.415 \| good	0.207 \| good
2026-09-30T09:00:00.000Z	16 \| good	3.405 \| good	15.006 \| good	13.785 \| good	0.473 \| good	9.684 \| good	0.21 \| good
2026-09-30T10:00:00.000Z	16 \| good	3.421 \| good	14.985 \| good	10.443 \| good	0.477 \| good	9.887 \| good	0.213 \| good
2026-09-30T11:00:00.000Z	33 \| good	5.508 \| good	24.215 \| good	8.057 \| good	0.497 \| good	9.901 \| good	0.226 \| good
2026-09-30T12:00:00.000Z	44 \| good	8.467 \| good	36.991 \| good	8.219 \| good	0.508 \| good	8.798 \| good	0.247 \| good
2026-09-30T13:00:00.000Z	44 \| good	7.561 \| good	33.353 \| good	9.743 \| good	0.519 \| good	7.06 \| good	0.246 \| good
2026-09-30T14:00:00.000Z	27 \| good	5.371 \| good	23.12 \| good	12.595 \| good	0.518 \| good	5.666 \| good	0.229 \| good
2026-09-30T15:00:00.000Z	22 \| good	3.69 \| good	15.909 \| good	18.73 \| good	0.464 \| good	4.229 \| good	0.206 \| good
2026-09-30T16:00:00.000Z	27 \| good	5.271 \| good	22.902 \| good	26.226 \| good	0.411 \| good	3.616 \| good	0.197 \| good
2026-09-30T17:00:00.000Z	33 \| good	6.464 \| good	28.581 \| good	31.473 \| good	0.39 \| good	3.639 \| good	0.195 \| good
2026-09-30T18:00:00.000Z	44 \| good	8.054 \| good	35.22 \| good	34.009 \| good	0.379 \| good	3.765 \| good	0.193 \| good
2026-09-30T19:00:00.000Z	49 \| good	8.673 \| good	37.875 \| good	35.012 \| good	0.374 \| good	3.868 \| good	0.192 \| good
2026-09-30T20:00:00.000Z	49 \| good	9.011 \| good	39.973 \| good	35.398 \| good	0.377 \| good	4.543 \| good	0.192 \| good
2026-09-30T21:00:00.000Z	52 \| moderate	10.03 \| good	44.69 \| good	30.936 \| good	0.388 \| good	6.412 \| good	0.201 \| good
2026-09-30T22:00:00.000Z	49 \| good	9.395 \| good	41.695 \| good	26.061 \| good	0.413 \| good	10.404 \| good	0.23 \| good
2026-09-30T23:00:00.000Z	44 \| good	8.233 \| good	35.933 \| good	27.618 \| good	0.464 \| good	15.955 \| good	0.267 \| good

Boston

Empower business decisions with accurate air quality data

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

0.27ppm

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.

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Frequently asked questions

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

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

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

The worst air quality in Boston, Massachusetts was recorded at 03:00:00 on 2026-09-28.

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

The best air quality in Boston, Massachusetts was recorded at 10:00:00 on 2026-09-28.

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

The real-time air quality index in Boston, Massachusetts is 20, currently categorized as Good.

Which pollutant is found most often in Boston, Massachusetts?

The most common pollutant in Boston, Massachusetts is O3.

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

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

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

The measured PM_2.5 levels in Boston, Massachusetts at present are 2.839 μg/m³.

What are the current PM₁₀ levels at Boston, Massachusetts?

The current PM₁₀ levels in Boston, Massachusetts are 12.796 μg/m³.

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

The current carbon monoxide (CO) level in Boston, Massachusetts is 0.283 ppm.

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

The current sulfur dioxide (SO₂) levels in Boston, Massachusetts are 1.053 ppb.

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

The current ozone (O₃) levels at Boston, Massachusetts is 22.255 ppm.

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

The current nitrogen dioxide (NO₂) levels at Boston, Massachusetts is 4.797 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-27T00:00:00.000Z	33 \| good	4.713 \| good	14.521 \| good	36.036 \| good	0.696 \| good	1.208 \| good	0.147 \| good
2026-09-27T01:00:00.000Z	33 \| good	4.931 \| good	15.473 \| good	35.593 \| good	0.77 \| good	1.761 \| good	0.147 \| good
2026-09-27T02:00:00.000Z	34 \| good	5.695 \| good	18.06 \| good	36.842 \| good	0.779 \| good	1.69 \| good	0.145 \| good
2026-09-27T03:00:00.000Z	31 \| good	2.965 \| good	12.122 \| good	32.967 \| good	0.128 \| good	1.147 \| good	0.131 \| good
2026-09-27T04:00:00.000Z	33 \| good	5.821 \| good	18.742 \| good	36.114 \| good	0.762 \| good	1.689 \| good	0.147 \| good
2026-09-27T05:00:00.000Z	33 \| good	5.704 \| good	17.565 \| good	35.536 \| good	0.511 \| good	1.569 \| good	0.147 \| good
2026-09-27T06:00:00.000Z	31 \| good	5.007 \| good	15.1 \| good	32.986 \| good	0.735 \| good	1.593 \| good	0.138 \| good
2026-09-27T07:00:00.000Z	30 \| good	5.007 \| good	15.1 \| good	31.999 \| good	0.735 \| good	1.598 \| good	0.138 \| good
2026-09-27T08:00:00.000Z	30 \| good	4.131 \| good	12.474 \| good	31.698 \| good	0.762 \| good	0.55 \| good	0.138 \| good
2026-09-27T09:00:00.000Z	29 \| good	3.786 \| good	11.32 \| good	31.049 \| good	0.754 \| good	1.305 \| good	0.138 \| good
2026-09-27T10:00:00.000Z	30 \| good	3.113 \| good	8.934 \| good	31.629 \| good	0.717 \| good	1.505 \| good	0.138 \| good
2026-09-27T11:00:00.000Z	29 \| good	2.767 \| good	7.934 \| good	30.913 \| good	0.734 \| good	1.783 \| good	0.138 \| good
2026-09-27T12:00:00.000Z	30 \| good	2.666 \| good	7.902 \| good	31.903 \| good	0.753 \| good	1.875 \| good	0.138 \| good
2026-09-27T13:00:00.000Z	29 \| good	2.666 \| good	7.902 \| good	31.01 \| good	0.753 \| good	1.854 \| good	0.138 \| good
2026-09-27T14:00:00.000Z	28 \| good	2.207 \| good	6.276 \| good	30.483 \| good	0.753 \| good	1.861 \| good	0.145 \| good
2026-09-27T15:00:00.000Z	29 \| good	1.644 \| good	4.852 \| good	31.282 \| good	0.762 \| good	1.152 \| good	0.145 \| good
2026-09-27T16:00:00.000Z	29 \| good	1.339 \| good	3.482 \| good	30.921 \| good	0.725 \| good	1.803 \| good	0.153 \| good
2026-09-27T17:00:00.000Z	28 \| good	1.437 \| good	3.852 \| good	29.711 \| good	0.754 \| good	1.852 \| good	0.16 \| good
2026-09-27T18:00:00.000Z	28 \| good	1.68 \| good	4.987 \| good	29.823 \| good	0.764 \| good	1.976 \| good	0.153 \| good
2026-09-27T19:00:00.000Z	27 \| good	1.905 \| good	5.37 \| good	29.234 \| good	0.764 \| good	1.898 \| good	0.153 \| good
2026-09-27T20:00:00.000Z	28 \| good	1.892 \| good	5.715 \| good	29.574 \| good	0.729 \| good	2.003 \| good	0.145 \| good
2026-09-27T21:00:00.000Z	28 \| good	1.871 \| good	5.659 \| good	29.674 \| good	0.724 \| good	1.734 \| good	0.145 \| good
2026-09-27T22:00:00.000Z	27 \| good	1.862 \| good	5.308 \| good	29.476 \| good	0.772 \| good	2.318 \| good	0.145 \| good
2026-09-27T23:00:00.000Z	29 \| good	1.628 \| good	4.883 \| good	30.8 \| good	0.762 \| good	2.354 \| good	0.145 \| good
2026-09-28T00:00:00.000Z	27 \| good	1.398 \| good	3.947 \| good	28.864 \| good	0.716 \| good	2.461 \| good	0.145 \| good
2026-09-28T01:00:00.000Z	27 \| good	1.981 \| good	5.407 \| good	28.652 \| good	0.732 \| good	1.336 \| good	0.145 \| good
2026-09-28T02:00:00.000Z	27 \| good	3.858 \| good	11.551 \| good	28.936 \| good	0.724 \| good	1.077 \| good	0.145 \| good
2026-09-28T03:00:00.000Z	33 \| good	5.758 \| good	24.866 \| good	29.018 \| good	0.128 \| good	2.125 \| good	0.128 \| good
2026-09-28T04:00:00.000Z	27 \| good	5.045 \| good	15.056 \| good	28.796 \| good	0.725 \| good	0.932 \| good	0.145 \| good
2026-09-28T05:00:00.000Z	27 \| good	4.827 \| good	14.846 \| good	28.679 \| good	0.716 \| good	0.747 \| good	0.138 \| good
2026-09-28T06:00:00.000Z	27 \| good	4.214 \| good	12.58 \| good	29.401 \| good	0.733 \| good	0.684 \| good	0.138 \| good
2026-09-28T07:00:00.000Z	28 \| good	4.214 \| good	12.58 \| good	30.354 \| good	0.733 \| good	0.695 \| good	0.138 \| good
2026-09-28T08:00:00.000Z	27 \| good	3.629 \| good	10.762 \| good	29.478 \| good	0.733 \| good	0.616 \| good	0.138 \| good
2026-09-28T09:00:00.000Z	26 \| good	2.435 \| good	6.534 \| good	28.344 \| good	0.669 \| good	0.804 \| good	0.145 \| good
2026-09-28T10:00:00.000Z	28 \| good	2.14 \| good	6.109 \| good	30.05 \| good	0.715 \| good	1.282 \| good	0.152 \| good
2026-09-28T11:00:00.000Z	28 \| good	1.92 \| good	5.74 \| good	29.776 \| good	0.733 \| good	1.647 \| good	0.152 \| good
2026-09-28T12:00:00.000Z	27 \| good	1.639 \| good	4.852 \| good	28.609 \| good	0.722 \| good	2.278 \| good	0.16 \| good
2026-09-28T13:00:00.000Z	25 \| good	1.639 \| good	4.852 \| good	27.422 \| good	0.723 \| good	2.124 \| good	0.167 \| good
2026-09-28T14:00:00.000Z	27 \| good	1.172 \| good	3.537 \| good	28.699 \| good	0.965 \| good	2.862 \| good	0.217 \| good
2026-09-28T15:00:00.000Z	26 \| good	0.988 \| good	3.176 \| good	27.818 \| good	0.973 \| good	2.478 \| good	0.262 \| good
2026-09-28T16:00:00.000Z	26 \| good	0.899 \| good	2.343 \| good	27.862 \| good	0.976 \| good	2.332 \| good	0.197 \| good
2026-09-28T17:00:00.000Z	26 \| good	0.899 \| good	2.343 \| good	27.822 \| good	0.985 \| good	1.894 \| good	0.207 \| good
2026-09-28T18:00:00.000Z	25 \| good	0.942 \| good	2.656 \| good	26.795 \| good	0.967 \| good	2.545 \| good	0.207 \| good
2026-09-28T19:00:00.000Z	26 \| good	0.979 \| good	2.656 \| good	27.54 \| good	0.958 \| good	2.098 \| good	0.262 \| good
2026-09-28T20:00:00.000Z	23 \| good	1.228 \| good	5.005 \| good	24.731 \| good	1.009 \| good	2.316 \| good	0.264 \| good
2026-09-28T21:00:00.000Z	22 \| good	1.059 \| good	4.128 \| good	24.232 \| good	0.978 \| good	2.467 \| good	0.264 \| good
2026-09-28T22:00:00.000Z	20 \| good	0.642 \| good	1.957 \| good	22.293 \| good	0.973 \| good	2.017 \| good	0.262 \| good
2026-09-28T23:00:00.000Z	20 \| good	2.839 \| good	12.796 \| good	22.255 \| good	1.053 \| good	4.797 \| good	0.283 \| good
2026-09-29T00:00:00.000Z	33 \| good	5.534 \| good	23.918 \| good	25.697 \| good	0.304 \| good	7.379 \| good	0.166 \| good
2026-09-29T01:00:00.000Z	33 \| good	5.628 \| good	24.255 \| good	23.622 \| good	0.333 \| good	7.755 \| good	0.166 \| good
2026-09-29T02:00:00.000Z	27 \| good	5.354 \| good	23.174 \| good	21.232 \| good	0.361 \| good	8.427 \| good	0.168 \| good
2026-09-29T03:00:00.000Z	27 \| good	4.955 \| good	21.498 \| good	19.496 \| good	0.374 \| good	8.415 \| good	0.168 \| good
2026-09-29T04:00:00.000Z	22 \| good	4.21 \| good	18.538 \| good	18.161 \| good	0.37 \| good	7.549 \| good	0.167 \| good
2026-09-29T05:00:00.000Z	19 \| good	3.455 \| good	15.144 \| good	19.871 \| good	0.366 \| good	6.571 \| good	0.164 \| good
2026-09-29T06:00:00.000Z	19 \| good	2.939 \| good	12 \| good	21.153 \| good	0.346 \| good	5.716 \| good	0.16 \| good
2026-09-29T07:00:00.000Z	20 \| good	2.9 \| good	12 \| good	21.784 \| good	0.318 \| good	4.891 \| good	0.155 \| good
2026-09-29T08:00:00.000Z	20 \| good	2.88 \| good	11.928 \| good	21.882 \| good	0.282 \| good	4.027 \| good	0.151 \| good
2026-09-29T09:00:00.000Z	18 \| good	3.344 \| good	14.933 \| good	19.026 \| good	0.258 \| good	3.648 \| good	0.149 \| good
2026-09-29T10:00:00.000Z	22 \| good	3.553 \| good	15.447 \| good	17.351 \| good	0.253 \| good	3.82 \| good	0.149 \| good
2026-09-29T11:00:00.000Z	22 \| good	3.636 \| good	16.15 \| good	13.758 \| good	0.262 \| good	5.481 \| good	0.159 \| good
2026-09-29T12:00:00.000Z	16 \| good	3.128 \| good	13.074 \| good	13.176 \| good	0.271 \| good	6.686 \| good	0.176 \| good
2026-09-29T13:00:00.000Z	16 \| good	3.444 \| good	14.985 \| good	14.373 \| good	0.271 \| good	6.095 \| good	0.181 \| good
2026-09-29T14:00:00.000Z	16 \| good	3.002 \| good	12.852 \| good	15.001 \| good	0.267 \| good	4.73 \| good	0.176 \| good
2026-09-29T15:00:00.000Z	18 \| good	2.46 \| good	10.201 \| good	19.361 \| good	0.257 \| good	3.399 \| good	0.165 \| good
2026-09-29T16:00:00.000Z	22 \| good	2.324 \| good	9.413 \| good	24.448 \| good	0.259 \| good	2.836 \| good	0.159 \| good
2026-09-29T17:00:00.000Z	25 \| good	2.659 \| good	10.866 \| good	26.965 \| good	0.258 \| good	2.626 \| good	0.158 \| good
2026-09-29T18:00:00.000Z	24 \| good	3.04 \| good	12.839 \| good	26.415 \| good	0.261 \| good	2.723 \| good	0.159 \| good
2026-09-29T19:00:00.000Z	22 \| good	4.249 \| good	18.921 \| good	20.76 \| good	0.264 \| good	2.879 \| good	0.16 \| good
2026-09-29T20:00:00.000Z	33 \| good	5.524 \| good	23.913 \| good	18.632 \| good	0.276 \| good	3.113 \| good	0.162 \| good
2026-09-29T21:00:00.000Z	33 \| good	6.471 \| good	28.325 \| good	19.805 \| good	0.307 \| good	4.906 \| good	0.176 \| good
2026-09-29T22:00:00.000Z	38 \| good	7.061 \| good	31.117 \| good	19.572 \| good	0.348 \| good	8.148 \| good	0.2 \| good
2026-09-29T23:00:00.000Z	38 \| good	6.748 \| good	29.799 \| good	17.933 \| good	0.412 \| good	12.589 \| good	0.228 \| good
2026-09-30T00:00:00.000Z	44 \| good	7.84 \| good	34.644 \| good	18.463 \| good	0.465 \| good	13.755 \| good	0.235 \| good
2026-09-30T01:00:00.000Z	44 \| good	7.529 \| good	33.176 \| good	18.046 \| good	0.49 \| good	13.372 \| good	0.229 \| good
2026-09-30T02:00:00.000Z	38 \| good	7.325 \| good	32.254 \| good	16.229 \| good	0.506 \| good	12.641 \| good	0.223 \| good
2026-09-30T03:00:00.000Z	38 \| good	6.952 \| good	30.642 \| good	16.052 \| good	0.512 \| good	11.894 \| good	0.22 \| good
2026-09-30T04:00:00.000Z	33 \| good	6.438 \| good	28.469 \| good	18.054 \| good	0.504 \| good	10.684 \| good	0.216 \| good
2026-09-30T05:00:00.000Z	27 \| good	5.459 \| good	23.7 \| good	16.126 \| good	0.494 \| good	9.613 \| good	0.21 \| good
2026-09-30T06:00:00.000Z	27 \| good	4.601 \| good	20.103 \| good	15.332 \| good	0.485 \| good	9.04 \| good	0.206 \| good
2026-09-30T07:00:00.000Z	27 \| good	5.048 \| good	21.595 \| good	17.032 \| good	0.479 \| good	8.975 \| good	0.205 \| good
2026-09-30T08:00:00.000Z	27 \| good	5.001 \| good	21.512 \| good	17.979 \| good	0.475 \| good	9.415 \| good	0.207 \| good
2026-09-30T09:00:00.000Z	16 \| good	3.405 \| good	15.006 \| good	13.785 \| good	0.473 \| good	9.684 \| good	0.21 \| good
2026-09-30T10:00:00.000Z	16 \| good	3.421 \| good	14.985 \| good	10.443 \| good	0.477 \| good	9.887 \| good	0.213 \| good
2026-09-30T11:00:00.000Z	33 \| good	5.508 \| good	24.215 \| good	8.057 \| good	0.497 \| good	9.901 \| good	0.226 \| good
2026-09-30T12:00:00.000Z	44 \| good	8.467 \| good	36.991 \| good	8.219 \| good	0.508 \| good	8.798 \| good	0.247 \| good
2026-09-30T13:00:00.000Z	44 \| good	7.561 \| good	33.353 \| good	9.743 \| good	0.519 \| good	7.06 \| good	0.246 \| good
2026-09-30T14:00:00.000Z	27 \| good	5.371 \| good	23.12 \| good	12.595 \| good	0.518 \| good	5.666 \| good	0.229 \| good
2026-09-30T15:00:00.000Z	22 \| good	3.69 \| good	15.909 \| good	18.73 \| good	0.464 \| good	4.229 \| good	0.206 \| good
2026-09-30T16:00:00.000Z	27 \| good	5.271 \| good	22.902 \| good	26.226 \| good	0.411 \| good	3.616 \| good	0.197 \| good
2026-09-30T17:00:00.000Z	33 \| good	6.464 \| good	28.581 \| good	31.473 \| good	0.39 \| good	3.639 \| good	0.195 \| good
2026-09-30T18:00:00.000Z	44 \| good	8.054 \| good	35.22 \| good	34.009 \| good	0.379 \| good	3.765 \| good	0.193 \| good
2026-09-30T19:00:00.000Z	49 \| good	8.673 \| good	37.875 \| good	35.012 \| good	0.374 \| good	3.868 \| good	0.192 \| good
2026-09-30T20:00:00.000Z	49 \| good	9.011 \| good	39.973 \| good	35.398 \| good	0.377 \| good	4.543 \| good	0.192 \| good
2026-09-30T21:00:00.000Z	52 \| moderate	10.03 \| good	44.69 \| good	30.936 \| good	0.388 \| good	6.412 \| good	0.201 \| good
2026-09-30T22:00:00.000Z	49 \| good	9.395 \| good	41.695 \| good	26.061 \| good	0.413 \| good	10.404 \| good	0.23 \| good
2026-09-30T23:00:00.000Z	44 \| good	8.233 \| good	35.933 \| good	27.618 \| good	0.464 \| good	15.955 \| good	0.267 \| good

Real-time air quality index in Boston, Massachusetts today

Common air pollutants in Boston, Massachusetts

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Boston, Massachusetts air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

Cambridge, Massachusetts

Chelsea, Massachusetts

Somerville, Massachusetts

Everett, Massachusetts

Brookline, Massachusetts

Winthrop Town, Massachusetts

How accurate is Massachusetts, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

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

Which pollutant is found most often in Boston, Massachusetts?

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

What are the current PM2.5 levels in Boston, Massachusetts?

What are the current PM10 levels at Boston, Massachusetts?

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

What are the current PM₁₀ levels at Boston, Massachusetts?

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

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

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