What is the current concentration of PM10 in Cambridge, Massachusetts?

The current PM10 concentration at Cambridge, Massachusetts is 5.929 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Cambridge, Massachusetts?

The current sulfur dioxide (SO2) concentration at Cambridge, Massachusetts is 1.165 ppb.

What is the current concentration of ozone (O3) in Cambridge, Massachusetts?

The current ozone (O3) concentration at Cambridge, Massachusetts is 21.642 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Cambridge, Massachusetts?

The current nitrogen dioxide (NO2) concentration at Cambridge, Massachusetts is 4.919 ppb.

Cambridge, Massachusetts live air quality index now

Q: What is the current concentration of PM2.5 in Cambridge, Massachusetts?

The current PM2.5 concentration at Cambridge, Massachusetts is 1.315 μg/m3.

Stay updated with real-time air quality in Cambridge, 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

Cambridge, Massachusetts

Last updated: ... (Local time)

Major air pollutants in Cambridge, Massachusetts

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

1.31 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

5.93 μg/m³

155

255

425

605+

Ozone (O₃)

21.64 ppb

201

201+

Sulfur Dioxide (SO₂)

1.17 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.92 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Cambridge, Massachusetts

Get Live Pollen Counts

Cambridge, Massachusetts

Scroll To Air Quality Map

Track live Cambridge, Massachusetts air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-27T00:00:00.000Z	33 \| good	4.753 \| good	18.317 \| good	36.186 \| good	0.63 \| good	3.621 \| good	0.145 \| good
2026-09-27T01:00:00.000Z	32 \| good	4.922 \| good	19.527 \| good	35 \| good	0.727 \| good	4.891 \| good	0.145 \| good
2026-09-27T02:00:00.000Z	32 \| good	5.488 \| good	21.645 \| good	35.459 \| good	0.728 \| good	5.741 \| good	0.144 \| good
2026-09-27T03:00:00.000Z	30 \| good	2.653 \| good	10.92 \| good	31.616 \| good	0.155 \| good	1.689 \| good	0.133 \| good
2026-09-27T04:00:00.000Z	33 \| good	5.459 \| good	21.725 \| good	35.83 \| good	0.726 \| good	4.282 \| good	0.145 \| good
2026-09-27T05:00:00.000Z	32 \| good	5.451 \| good	21.674 \| good	34.844 \| good	0.373 \| good	3.619 \| good	0.145 \| good
2026-09-27T06:00:00.000Z	31 \| good	4.765 \| good	18.612 \| good	33.328 \| good	0.677 \| good	3.604 \| good	0.142 \| good
2026-09-27T07:00:00.000Z	30 \| good	4.765 \| good	18.612 \| good	32.003 \| good	0.677 \| good	3.605 \| good	0.142 \| good
2026-09-27T08:00:00.000Z	29 \| good	4.292 \| good	16.441 \| good	31.247 \| good	0.727 \| good	1.42 \| good	0.142 \| good
2026-09-27T09:00:00.000Z	29 \| good	4.223 \| good	16.441 \| good	31.469 \| good	0.725 \| good	2.695 \| good	0.142 \| good
2026-09-27T10:00:00.000Z	29 \| good	3.287 \| good	12.322 \| good	31.122 \| good	0.675 \| good	3.328 \| good	0.142 \| good
2026-09-27T11:00:00.000Z	28 \| good	3.022 \| good	11.549 \| good	30.159 \| good	0.676 \| good	4.403 \| good	0.142 \| good
2026-09-27T12:00:00.000Z	28 \| good	2.932 \| good	11.151 \| good	30.43 \| good	0.726 \| good	4.966 \| good	0.142 \| good
2026-09-27T13:00:00.000Z	28 \| good	2.932 \| good	11.151 \| good	29.716 \| good	0.726 \| good	4.982 \| good	0.142 \| good
2026-09-27T14:00:00.000Z	26 \| good	2.317 \| good	8.794 \| good	28.394 \| good	0.725 \| good	5.304 \| good	0.144 \| good
2026-09-27T15:00:00.000Z	27 \| good	1.826 \| good	6.874 \| good	29.454 \| good	0.726 \| good	2.775 \| good	0.144 \| good
2026-09-27T16:00:00.000Z	26 \| good	1.622 \| good	6.141 \| good	28.196 \| good	0.681 \| good	5.139 \| good	0.147 \| good
2026-09-27T17:00:00.000Z	26 \| good	1.672 \| good	6.249 \| good	27.997 \| good	0.725 \| good	5.145 \| good	0.15 \| good
2026-09-27T18:00:00.000Z	25 \| good	2.087 \| good	7.726 \| good	27.46 \| good	0.727 \| good	5.504 \| good	0.147 \| good
2026-09-27T19:00:00.000Z	25 \| good	2.643 \| good	10.152 \| good	27.44 \| good	0.727 \| good	5.629 \| good	0.147 \| good
2026-09-27T20:00:00.000Z	26 \| good	2.763 \| good	10.669 \| good	27.917 \| good	0.672 \| good	6.271 \| good	0.144 \| good
2026-09-27T21:00:00.000Z	26 \| good	2.539 \| good	9.777 \| good	28.385 \| good	0.68 \| good	6.751 \| good	0.144 \| good
2026-09-27T22:00:00.000Z	25 \| good	2.187 \| good	8.124 \| good	26.782 \| good	0.728 \| good	6.582 \| good	0.144 \| good
2026-09-27T23:00:00.000Z	26 \| good	2.03 \| good	7.271 \| good	27.962 \| good	0.726 \| good	7.207 \| good	0.144 \| good
2026-09-28T00:00:00.000Z	26 \| good	1.813 \| good	6.84 \| good	28.225 \| good	0.679 \| good	7.405 \| good	0.144 \| good
2026-09-28T01:00:00.000Z	25 \| good	1.694 \| good	6.232 \| good	27.417 \| good	0.681 \| good	3.743 \| good	0.144 \| good
2026-09-28T02:00:00.000Z	24 \| good	2.817 \| good	10.896 \| good	26.027 \| good	0.674 \| good	3.199 \| good	0.144 \| good
2026-09-28T03:00:00.000Z	33 \| good	6.023 \| good	26.875 \| good	26.359 \| good	0.17 \| good	3.488 \| good	0.133 \| good
2026-09-28T04:00:00.000Z	26 \| good	3.819 \| good	14.697 \| good	27.83 \| good	0.674 \| good	2.926 \| good	0.144 \| good
2026-09-28T05:00:00.000Z	25 \| good	4.055 \| good	15.936 \| good	27.438 \| good	0.674 \| good	2.323 \| good	0.142 \| good
2026-09-28T06:00:00.000Z	25 \| good	3.748 \| good	14.51 \| good	27.386 \| good	0.676 \| good	1.945 \| good	0.142 \| good
2026-09-28T07:00:00.000Z	26 \| good	3.748 \| good	14.51 \| good	28.332 \| good	0.676 \| good	1.944 \| good	0.142 \| good
2026-09-28T08:00:00.000Z	27 \| good	3.308 \| good	12.51 \| good	28.531 \| good	0.676 \| good	1.61 \| good	0.142 \| good
2026-09-28T09:00:00.000Z	26 \| good	2.198 \| good	8.113 \| good	28.069 \| good	0.627 \| good	2.239 \| good	0.144 \| good
2026-09-28T10:00:00.000Z	26 \| good	1.987 \| good	7.113 \| good	27.553 \| good	0.673 \| good	3.105 \| good	0.147 \| good
2026-09-28T11:00:00.000Z	26 \| good	1.893 \| good	7.005 \| good	27.839 \| good	0.675 \| good	4.217 \| good	0.147 \| good
2026-09-28T12:00:00.000Z	25 \| good	1.79 \| good	6.511 \| good	26.534 \| good	0.673 \| good	5.514 \| good	0.15 \| good
2026-09-28T13:00:00.000Z	24 \| good	1.79 \| good	6.511 \| good	26.185 \| good	0.673 \| good	5.621 \| good	0.152 \| good
2026-09-28T14:00:00.000Z	24 \| good	1.668 \| good	6.147 \| good	26.217 \| good	1.062 \| good	9.447 \| good	0.208 \| good
2026-09-28T15:00:00.000Z	24 \| good	1.586 \| good	6.397 \| good	25.86 \| good	1.059 \| good	8.473 \| good	0.286 \| good
2026-09-28T16:00:00.000Z	24 \| good	1.578 \| good	6.308 \| good	25.94 \| good	1.082 \| good	7.435 \| good	0.199 \| good
2026-09-28T17:00:00.000Z	24 \| good	1.578 \| good	6.308 \| good	25.753 \| good	1.108 \| good	6.025 \| good	0.205 \| good
2026-09-28T18:00:00.000Z	23 \| good	1.653 \| good	6.723 \| good	25.061 \| good	1.099 \| good	5.315 \| good	0.205 \| good
2026-09-28T19:00:00.000Z	23 \| good	1.684 \| good	6.9 \| good	25.262 \| good	1.078 \| good	4.631 \| good	0.28 \| good
2026-09-28T20:00:00.000Z	22 \| good	1.715 \| good	7.176 \| good	24.106 \| good	1.109 \| good	5.006 \| good	0.28 \| good
2026-09-28T21:00:00.000Z	21 \| good	1.614 \| good	6.563 \| good	22.68 \| good	1.075 \| good	5.477 \| good	0.28 \| good
2026-09-28T22:00:00.000Z	20 \| good	1.5 \| good	6.634 \| good	21.704 \| good	1.099 \| good	4.641 \| good	0.28 \| good
2026-09-28T23:00:00.000Z	19 \| good	1.824 \| good	7.709 \| good	21.079 \| good	1.097 \| good	6.356 \| good	0.274 \| good
2026-09-28T23:00:00.000Z	20 \| good	1.315 \| good	5.929 \| good	21.642 \| good	1.165 \| good	4.919 \| good	0.277 \| good
2026-09-29T00:00:00.000Z	27 \| good	5.442 \| good	23.642 \| good	21.662 \| good	0.376 \| good	11.364 \| good	0.182 \| good
2026-09-29T01:00:00.000Z	27 \| good	5.354 \| good	22.861 \| good	20.822 \| good	0.404 \| good	11.89 \| good	0.181 \| good
2026-09-29T02:00:00.000Z	27 \| good	5.184 \| good	22.582 \| good	18.658 \| good	0.432 \| good	13.08 \| good	0.182 \| good
2026-09-29T03:00:00.000Z	27 \| good	5.032 \| good	21.773 \| good	17.518 \| good	0.442 \| good	12.99 \| good	0.182 \| good
2026-09-29T04:00:00.000Z	22 \| good	4.333 \| good	18.915 \| good	17.973 \| good	0.421 \| good	11.298 \| good	0.179 \| good
2026-09-29T05:00:00.000Z	19 \| good	3.396 \| good	14.865 \| good	19.638 \| good	0.39 \| good	9.198 \| good	0.173 \| good
2026-09-29T06:00:00.000Z	22 \| good	2.8 \| good	11.769 \| good	23.625 \| good	0.353 \| good	7.511 \| good	0.166 \| good
2026-09-29T07:00:00.000Z	22 \| good	2.819 \| good	11.769 \| good	24.052 \| good	0.317 \| good	6.215 \| good	0.161 \| good
2026-09-29T08:00:00.000Z	21 \| good	2.967 \| good	12.115 \| good	22.512 \| good	0.29 \| good	5.001 \| good	0.156 \| good
2026-09-29T09:00:00.000Z	22 \| good	3.531 \| good	15.742 \| good	18.625 \| good	0.277 \| good	4.562 \| good	0.153 \| good
2026-09-29T10:00:00.000Z	22 \| good	4.026 \| good	17.696 \| good	15.904 \| good	0.277 \| good	5.132 \| good	0.155 \| good
2026-09-29T11:00:00.000Z	27 \| good	4.698 \| good	20.55 \| good	9.639 \| good	0.299 \| good	8.108 \| good	0.17 \| good
2026-09-29T12:00:00.000Z	22 \| good	4.469 \| good	19.599 \| good	10.838 \| good	0.323 \| good	9.916 \| good	0.195 \| good
2026-09-29T13:00:00.000Z	22 \| good	4.46 \| good	19.547 \| good	13.655 \| good	0.326 \| good	8.479 \| good	0.198 \| good
2026-09-29T14:00:00.000Z	17 \| good	3.059 \| good	12.375 \| good	17.985 \| good	0.315 \| good	6.013 \| good	0.184 \| good
2026-09-29T15:00:00.000Z	20 \| good	2.403 \| good	9.965 \| good	21.811 \| good	0.29 \| good	3.888 \| good	0.165 \| good
2026-09-29T16:00:00.000Z	25 \| good	2.508 \| good	10.182 \| good	26.986 \| good	0.294 \| good	3.183 \| good	0.157 \| good
2026-09-29T17:00:00.000Z	27 \| good	3.121 \| good	13.417 \| good	29.276 \| good	0.291 \| good	2.925 \| good	0.154 \| good
2026-09-29T18:00:00.000Z	27 \| good	3.913 \| good	16.836 \| good	28.576 \| good	0.29 \| good	3.038 \| good	0.155 \| good
2026-09-29T19:00:00.000Z	27 \| good	5.29 \| good	22.614 \| good	21.981 \| good	0.287 \| good	3.035 \| good	0.156 \| good
2026-09-29T20:00:00.000Z	44 \| good	8.309 \| good	36.227 \| good	16.876 \| good	0.3 \| good	3.048 \| good	0.157 \| good
2026-09-29T21:00:00.000Z	54 \| moderate	10.924 \| good	48.211 \| good	14.853 \| good	0.347 \| good	5.742 \| good	0.177 \| good
2026-09-29T22:00:00.000Z	58 \| moderate	12.561 \| fine	56.027 \| fine	12.436 \| good	0.404 \| good	10.723 \| good	0.213 \| good
2026-09-29T23:00:00.000Z	58 \| moderate	12.866 \| fine	58.025 \| fine	10.906 \| good	0.471 \| good	17.488 \| good	0.252 \| good
2026-09-30T00:00:00.000Z	60 \| moderate	13.755 \| fine	62.232 \| fine	10.244 \| good	0.514 \| good	18.531 \| good	0.255 \| good
2026-09-30T01:00:00.000Z	58 \| moderate	13.407 \| fine	60.247 \| fine	7.873 \| good	0.538 \| good	17.245 \| good	0.243 \| good
2026-09-30T02:00:00.000Z	56 \| moderate	12.425 \| fine	55.826 \| fine	7.701 \| good	0.559 \| good	15.652 \| good	0.23 \| good
2026-09-30T03:00:00.000Z	52 \| moderate	9.734 \| good	43.513 \| good	8.248 \| good	0.572 \| good	14.299 \| good	0.224 \| good
2026-09-30T04:00:00.000Z	38 \| good	6.98 \| good	30.966 \| good	14.748 \| good	0.568 \| good	12.535 \| good	0.218 \| good
2026-09-30T05:00:00.000Z	22 \| good	4.405 \| good	19.451 \| good	19.939 \| good	0.561 \| good	11.23 \| good	0.213 \| good
2026-09-30T06:00:00.000Z	22 \| good	4.098 \| good	17.977 \| good	19.465 \| good	0.553 \| good	10.741 \| good	0.209 \| good
2026-09-30T07:00:00.000Z	27 \| good	5.01 \| good	21.825 \| good	19.15 \| good	0.543 \| good	10.959 \| good	0.209 \| good
2026-09-30T08:00:00.000Z	27 \| good	5.164 \| good	22.182 \| good	18.297 \| good	0.532 \| good	11.844 \| good	0.214 \| good
2026-09-30T09:00:00.000Z	22 \| good	4.155 \| good	18.531 \| good	12.558 \| good	0.528 \| good	12.258 \| good	0.219 \| good
2026-09-30T10:00:00.000Z	27 \| good	4.555 \| good	19.779 \| good	8.327 \| good	0.539 \| good	12.396 \| good	0.224 \| good
2026-09-30T11:00:00.000Z	33 \| good	6.331 \| good	28.305 \| good	7.123 \| good	0.583 \| good	12.233 \| good	0.241 \| good
2026-09-30T12:00:00.000Z	49 \| good	8.673 \| good	38.263 \| good	6.774 \| good	0.616 \| good	10.634 \| good	0.269 \| good
2026-09-30T13:00:00.000Z	44 \| good	7.608 \| good	33.603 \| good	9.216 \| good	0.639 \| good	8.513 \| good	0.265 \| good
2026-09-30T14:00:00.000Z	33 \| good	5.542 \| good	23.86 \| good	14.361 \| good	0.644 \| good	6.888 \| good	0.238 \| good
2026-09-30T15:00:00.000Z	22 \| good	4.399 \| good	19.137 \| good	21.788 \| good	0.563 \| good	4.78 \| good	0.2 \| good
2026-09-30T16:00:00.000Z	33 \| good	6.477 \| good	28.859 \| good	26.22 \| good	0.478 \| good	3.822 \| good	0.183 \| good
2026-09-30T17:00:00.000Z	44 \| good	7.674 \| good	33.843 \| good	32.353 \| good	0.449 \| good	3.87 \| good	0.179 \| good
2026-09-30T18:00:00.000Z	44 \| good	8.17 \| good	35.662 \| good	37.582 \| good	0.439 \| good	4.077 \| good	0.179 \| good
2026-09-30T19:00:00.000Z	44 \| good	7.674 \| good	33.637 \| good	40.269 \| good	0.457 \| good	4.364 \| good	0.182 \| good
2026-09-30T20:00:00.000Z	38 \| good	7.495 \| good	33.2 \| good	40.573 \| good	0.488 \| good	5.629 \| good	0.188 \| good
2026-09-30T21:00:00.000Z	52 \| moderate	10.375 \| good	46.176 \| good	32.921 \| good	0.521 \| good	8.485 \| good	0.206 \| good
2026-09-30T22:00:00.000Z	56 \| moderate	11.692 \| good	52.601 \| good	23.318 \| good	0.559 \| good	15.136 \| good	0.254 \| good
2026-09-30T23:00:00.000Z	56 \| moderate	11.59 \| good	52.346 \| good	21.707 \| good	0.606 \| good	24.241 \| good	0.314 \| good

Cambridge

Get reliable air quality data to drive your business

Cambridge, Massachusetts air quality map: Track AQI near you

0.28ppm

How accurate is Massachusetts, USA air quality data?

Air quality data and pollutant measurements for Massachusetts, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

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 the air quality data for Cambridge, Massachusetts updated?

The air quality for Cambridge, Massachusetts is updated every hour.

When was the worst air quality at Cambridge, Massachusetts in the last 24 hrs?

The worst air quality in Cambridge, Massachusetts in the last 24 hours was observed at 03:00:00 on 2026-09-28.

When was the best air quality at Cambridge, Massachusetts in the last 24 hrs?

In the last 24 hrs, the best air quality in Cambridge, Massachusetts was observed at 10:00:00 on 2026-09-28.

What is the current air quality in Cambridge, Massachusetts?

The current air quality in Cambridge, Massachusetts is 20, categorized as Good based on real-time data.

What pollutant is the most common in Cambridge, Massachusetts?

The most common pollutant in Cambridge, Massachusetts is O3.

What should I do if the air quality in Cambridge, Massachusetts is poor?

If the air quality in Cambridge, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Cambridge, Massachusetts?

The current PM_2.5 concentration at Cambridge, Massachusetts is 1.315 μg/m³.

What is the current concentration of PM₁₀ in Cambridge, Massachusetts?

The current PM₁₀ concentration at Cambridge, Massachusetts is 5.929 μg/m³.

What is the current concentration of carbon monoxide (CO) in Cambridge, Massachusetts?

The current carbon monoxide (CO) concentration at Cambridge, Massachusetts is 0.277 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Cambridge, Massachusetts?

The current sulfur dioxide (SO₂) concentration at Cambridge, Massachusetts is 1.165 ppb.

What is the current concentration of ozone (O₃) in Cambridge, Massachusetts?

The current ozone (O₃) concentration at Cambridge, Massachusetts is 21.642 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Cambridge, Massachusetts?

The current nitrogen dioxide (NO₂) concentration at Cambridge, Massachusetts is 4.919 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-27T00:00:00.000Z	33 \| good	4.753 \| good	18.317 \| good	36.186 \| good	0.63 \| good	3.621 \| good	0.145 \| good
2026-09-27T01:00:00.000Z	32 \| good	4.922 \| good	19.527 \| good	35 \| good	0.727 \| good	4.891 \| good	0.145 \| good
2026-09-27T02:00:00.000Z	32 \| good	5.488 \| good	21.645 \| good	35.459 \| good	0.728 \| good	5.741 \| good	0.144 \| good
2026-09-27T03:00:00.000Z	30 \| good	2.653 \| good	10.92 \| good	31.616 \| good	0.155 \| good	1.689 \| good	0.133 \| good
2026-09-27T04:00:00.000Z	33 \| good	5.459 \| good	21.725 \| good	35.83 \| good	0.726 \| good	4.282 \| good	0.145 \| good
2026-09-27T05:00:00.000Z	32 \| good	5.451 \| good	21.674 \| good	34.844 \| good	0.373 \| good	3.619 \| good	0.145 \| good
2026-09-27T06:00:00.000Z	31 \| good	4.765 \| good	18.612 \| good	33.328 \| good	0.677 \| good	3.604 \| good	0.142 \| good
2026-09-27T07:00:00.000Z	30 \| good	4.765 \| good	18.612 \| good	32.003 \| good	0.677 \| good	3.605 \| good	0.142 \| good
2026-09-27T08:00:00.000Z	29 \| good	4.292 \| good	16.441 \| good	31.247 \| good	0.727 \| good	1.42 \| good	0.142 \| good
2026-09-27T09:00:00.000Z	29 \| good	4.223 \| good	16.441 \| good	31.469 \| good	0.725 \| good	2.695 \| good	0.142 \| good
2026-09-27T10:00:00.000Z	29 \| good	3.287 \| good	12.322 \| good	31.122 \| good	0.675 \| good	3.328 \| good	0.142 \| good
2026-09-27T11:00:00.000Z	28 \| good	3.022 \| good	11.549 \| good	30.159 \| good	0.676 \| good	4.403 \| good	0.142 \| good
2026-09-27T12:00:00.000Z	28 \| good	2.932 \| good	11.151 \| good	30.43 \| good	0.726 \| good	4.966 \| good	0.142 \| good
2026-09-27T13:00:00.000Z	28 \| good	2.932 \| good	11.151 \| good	29.716 \| good	0.726 \| good	4.982 \| good	0.142 \| good
2026-09-27T14:00:00.000Z	26 \| good	2.317 \| good	8.794 \| good	28.394 \| good	0.725 \| good	5.304 \| good	0.144 \| good
2026-09-27T15:00:00.000Z	27 \| good	1.826 \| good	6.874 \| good	29.454 \| good	0.726 \| good	2.775 \| good	0.144 \| good
2026-09-27T16:00:00.000Z	26 \| good	1.622 \| good	6.141 \| good	28.196 \| good	0.681 \| good	5.139 \| good	0.147 \| good
2026-09-27T17:00:00.000Z	26 \| good	1.672 \| good	6.249 \| good	27.997 \| good	0.725 \| good	5.145 \| good	0.15 \| good
2026-09-27T18:00:00.000Z	25 \| good	2.087 \| good	7.726 \| good	27.46 \| good	0.727 \| good	5.504 \| good	0.147 \| good
2026-09-27T19:00:00.000Z	25 \| good	2.643 \| good	10.152 \| good	27.44 \| good	0.727 \| good	5.629 \| good	0.147 \| good
2026-09-27T20:00:00.000Z	26 \| good	2.763 \| good	10.669 \| good	27.917 \| good	0.672 \| good	6.271 \| good	0.144 \| good
2026-09-27T21:00:00.000Z	26 \| good	2.539 \| good	9.777 \| good	28.385 \| good	0.68 \| good	6.751 \| good	0.144 \| good
2026-09-27T22:00:00.000Z	25 \| good	2.187 \| good	8.124 \| good	26.782 \| good	0.728 \| good	6.582 \| good	0.144 \| good
2026-09-27T23:00:00.000Z	26 \| good	2.03 \| good	7.271 \| good	27.962 \| good	0.726 \| good	7.207 \| good	0.144 \| good
2026-09-28T00:00:00.000Z	26 \| good	1.813 \| good	6.84 \| good	28.225 \| good	0.679 \| good	7.405 \| good	0.144 \| good
2026-09-28T01:00:00.000Z	25 \| good	1.694 \| good	6.232 \| good	27.417 \| good	0.681 \| good	3.743 \| good	0.144 \| good
2026-09-28T02:00:00.000Z	24 \| good	2.817 \| good	10.896 \| good	26.027 \| good	0.674 \| good	3.199 \| good	0.144 \| good
2026-09-28T03:00:00.000Z	33 \| good	6.023 \| good	26.875 \| good	26.359 \| good	0.17 \| good	3.488 \| good	0.133 \| good
2026-09-28T04:00:00.000Z	26 \| good	3.819 \| good	14.697 \| good	27.83 \| good	0.674 \| good	2.926 \| good	0.144 \| good
2026-09-28T05:00:00.000Z	25 \| good	4.055 \| good	15.936 \| good	27.438 \| good	0.674 \| good	2.323 \| good	0.142 \| good
2026-09-28T06:00:00.000Z	25 \| good	3.748 \| good	14.51 \| good	27.386 \| good	0.676 \| good	1.945 \| good	0.142 \| good
2026-09-28T07:00:00.000Z	26 \| good	3.748 \| good	14.51 \| good	28.332 \| good	0.676 \| good	1.944 \| good	0.142 \| good
2026-09-28T08:00:00.000Z	27 \| good	3.308 \| good	12.51 \| good	28.531 \| good	0.676 \| good	1.61 \| good	0.142 \| good
2026-09-28T09:00:00.000Z	26 \| good	2.198 \| good	8.113 \| good	28.069 \| good	0.627 \| good	2.239 \| good	0.144 \| good
2026-09-28T10:00:00.000Z	26 \| good	1.987 \| good	7.113 \| good	27.553 \| good	0.673 \| good	3.105 \| good	0.147 \| good
2026-09-28T11:00:00.000Z	26 \| good	1.893 \| good	7.005 \| good	27.839 \| good	0.675 \| good	4.217 \| good	0.147 \| good
2026-09-28T12:00:00.000Z	25 \| good	1.79 \| good	6.511 \| good	26.534 \| good	0.673 \| good	5.514 \| good	0.15 \| good
2026-09-28T13:00:00.000Z	24 \| good	1.79 \| good	6.511 \| good	26.185 \| good	0.673 \| good	5.621 \| good	0.152 \| good
2026-09-28T14:00:00.000Z	24 \| good	1.668 \| good	6.147 \| good	26.217 \| good	1.062 \| good	9.447 \| good	0.208 \| good
2026-09-28T15:00:00.000Z	24 \| good	1.586 \| good	6.397 \| good	25.86 \| good	1.059 \| good	8.473 \| good	0.286 \| good
2026-09-28T16:00:00.000Z	24 \| good	1.578 \| good	6.308 \| good	25.94 \| good	1.082 \| good	7.435 \| good	0.199 \| good
2026-09-28T17:00:00.000Z	24 \| good	1.578 \| good	6.308 \| good	25.753 \| good	1.108 \| good	6.025 \| good	0.205 \| good
2026-09-28T18:00:00.000Z	23 \| good	1.653 \| good	6.723 \| good	25.061 \| good	1.099 \| good	5.315 \| good	0.205 \| good
2026-09-28T19:00:00.000Z	23 \| good	1.684 \| good	6.9 \| good	25.262 \| good	1.078 \| good	4.631 \| good	0.28 \| good
2026-09-28T20:00:00.000Z	22 \| good	1.715 \| good	7.176 \| good	24.106 \| good	1.109 \| good	5.006 \| good	0.28 \| good
2026-09-28T21:00:00.000Z	21 \| good	1.614 \| good	6.563 \| good	22.68 \| good	1.075 \| good	5.477 \| good	0.28 \| good
2026-09-28T22:00:00.000Z	20 \| good	1.5 \| good	6.634 \| good	21.704 \| good	1.099 \| good	4.641 \| good	0.28 \| good
2026-09-28T23:00:00.000Z	19 \| good	1.824 \| good	7.709 \| good	21.079 \| good	1.097 \| good	6.356 \| good	0.274 \| good
2026-09-28T23:00:00.000Z	20 \| good	1.315 \| good	5.929 \| good	21.642 \| good	1.165 \| good	4.919 \| good	0.277 \| good
2026-09-29T00:00:00.000Z	27 \| good	5.442 \| good	23.642 \| good	21.662 \| good	0.376 \| good	11.364 \| good	0.182 \| good
2026-09-29T01:00:00.000Z	27 \| good	5.354 \| good	22.861 \| good	20.822 \| good	0.404 \| good	11.89 \| good	0.181 \| good
2026-09-29T02:00:00.000Z	27 \| good	5.184 \| good	22.582 \| good	18.658 \| good	0.432 \| good	13.08 \| good	0.182 \| good
2026-09-29T03:00:00.000Z	27 \| good	5.032 \| good	21.773 \| good	17.518 \| good	0.442 \| good	12.99 \| good	0.182 \| good
2026-09-29T04:00:00.000Z	22 \| good	4.333 \| good	18.915 \| good	17.973 \| good	0.421 \| good	11.298 \| good	0.179 \| good
2026-09-29T05:00:00.000Z	19 \| good	3.396 \| good	14.865 \| good	19.638 \| good	0.39 \| good	9.198 \| good	0.173 \| good
2026-09-29T06:00:00.000Z	22 \| good	2.8 \| good	11.769 \| good	23.625 \| good	0.353 \| good	7.511 \| good	0.166 \| good
2026-09-29T07:00:00.000Z	22 \| good	2.819 \| good	11.769 \| good	24.052 \| good	0.317 \| good	6.215 \| good	0.161 \| good
2026-09-29T08:00:00.000Z	21 \| good	2.967 \| good	12.115 \| good	22.512 \| good	0.29 \| good	5.001 \| good	0.156 \| good
2026-09-29T09:00:00.000Z	22 \| good	3.531 \| good	15.742 \| good	18.625 \| good	0.277 \| good	4.562 \| good	0.153 \| good
2026-09-29T10:00:00.000Z	22 \| good	4.026 \| good	17.696 \| good	15.904 \| good	0.277 \| good	5.132 \| good	0.155 \| good
2026-09-29T11:00:00.000Z	27 \| good	4.698 \| good	20.55 \| good	9.639 \| good	0.299 \| good	8.108 \| good	0.17 \| good
2026-09-29T12:00:00.000Z	22 \| good	4.469 \| good	19.599 \| good	10.838 \| good	0.323 \| good	9.916 \| good	0.195 \| good
2026-09-29T13:00:00.000Z	22 \| good	4.46 \| good	19.547 \| good	13.655 \| good	0.326 \| good	8.479 \| good	0.198 \| good
2026-09-29T14:00:00.000Z	17 \| good	3.059 \| good	12.375 \| good	17.985 \| good	0.315 \| good	6.013 \| good	0.184 \| good
2026-09-29T15:00:00.000Z	20 \| good	2.403 \| good	9.965 \| good	21.811 \| good	0.29 \| good	3.888 \| good	0.165 \| good
2026-09-29T16:00:00.000Z	25 \| good	2.508 \| good	10.182 \| good	26.986 \| good	0.294 \| good	3.183 \| good	0.157 \| good
2026-09-29T17:00:00.000Z	27 \| good	3.121 \| good	13.417 \| good	29.276 \| good	0.291 \| good	2.925 \| good	0.154 \| good
2026-09-29T18:00:00.000Z	27 \| good	3.913 \| good	16.836 \| good	28.576 \| good	0.29 \| good	3.038 \| good	0.155 \| good
2026-09-29T19:00:00.000Z	27 \| good	5.29 \| good	22.614 \| good	21.981 \| good	0.287 \| good	3.035 \| good	0.156 \| good
2026-09-29T20:00:00.000Z	44 \| good	8.309 \| good	36.227 \| good	16.876 \| good	0.3 \| good	3.048 \| good	0.157 \| good
2026-09-29T21:00:00.000Z	54 \| moderate	10.924 \| good	48.211 \| good	14.853 \| good	0.347 \| good	5.742 \| good	0.177 \| good
2026-09-29T22:00:00.000Z	58 \| moderate	12.561 \| fine	56.027 \| fine	12.436 \| good	0.404 \| good	10.723 \| good	0.213 \| good
2026-09-29T23:00:00.000Z	58 \| moderate	12.866 \| fine	58.025 \| fine	10.906 \| good	0.471 \| good	17.488 \| good	0.252 \| good
2026-09-30T00:00:00.000Z	60 \| moderate	13.755 \| fine	62.232 \| fine	10.244 \| good	0.514 \| good	18.531 \| good	0.255 \| good
2026-09-30T01:00:00.000Z	58 \| moderate	13.407 \| fine	60.247 \| fine	7.873 \| good	0.538 \| good	17.245 \| good	0.243 \| good
2026-09-30T02:00:00.000Z	56 \| moderate	12.425 \| fine	55.826 \| fine	7.701 \| good	0.559 \| good	15.652 \| good	0.23 \| good
2026-09-30T03:00:00.000Z	52 \| moderate	9.734 \| good	43.513 \| good	8.248 \| good	0.572 \| good	14.299 \| good	0.224 \| good
2026-09-30T04:00:00.000Z	38 \| good	6.98 \| good	30.966 \| good	14.748 \| good	0.568 \| good	12.535 \| good	0.218 \| good
2026-09-30T05:00:00.000Z	22 \| good	4.405 \| good	19.451 \| good	19.939 \| good	0.561 \| good	11.23 \| good	0.213 \| good
2026-09-30T06:00:00.000Z	22 \| good	4.098 \| good	17.977 \| good	19.465 \| good	0.553 \| good	10.741 \| good	0.209 \| good
2026-09-30T07:00:00.000Z	27 \| good	5.01 \| good	21.825 \| good	19.15 \| good	0.543 \| good	10.959 \| good	0.209 \| good
2026-09-30T08:00:00.000Z	27 \| good	5.164 \| good	22.182 \| good	18.297 \| good	0.532 \| good	11.844 \| good	0.214 \| good
2026-09-30T09:00:00.000Z	22 \| good	4.155 \| good	18.531 \| good	12.558 \| good	0.528 \| good	12.258 \| good	0.219 \| good
2026-09-30T10:00:00.000Z	27 \| good	4.555 \| good	19.779 \| good	8.327 \| good	0.539 \| good	12.396 \| good	0.224 \| good
2026-09-30T11:00:00.000Z	33 \| good	6.331 \| good	28.305 \| good	7.123 \| good	0.583 \| good	12.233 \| good	0.241 \| good
2026-09-30T12:00:00.000Z	49 \| good	8.673 \| good	38.263 \| good	6.774 \| good	0.616 \| good	10.634 \| good	0.269 \| good
2026-09-30T13:00:00.000Z	44 \| good	7.608 \| good	33.603 \| good	9.216 \| good	0.639 \| good	8.513 \| good	0.265 \| good
2026-09-30T14:00:00.000Z	33 \| good	5.542 \| good	23.86 \| good	14.361 \| good	0.644 \| good	6.888 \| good	0.238 \| good
2026-09-30T15:00:00.000Z	22 \| good	4.399 \| good	19.137 \| good	21.788 \| good	0.563 \| good	4.78 \| good	0.2 \| good
2026-09-30T16:00:00.000Z	33 \| good	6.477 \| good	28.859 \| good	26.22 \| good	0.478 \| good	3.822 \| good	0.183 \| good
2026-09-30T17:00:00.000Z	44 \| good	7.674 \| good	33.843 \| good	32.353 \| good	0.449 \| good	3.87 \| good	0.179 \| good
2026-09-30T18:00:00.000Z	44 \| good	8.17 \| good	35.662 \| good	37.582 \| good	0.439 \| good	4.077 \| good	0.179 \| good
2026-09-30T19:00:00.000Z	44 \| good	7.674 \| good	33.637 \| good	40.269 \| good	0.457 \| good	4.364 \| good	0.182 \| good
2026-09-30T20:00:00.000Z	38 \| good	7.495 \| good	33.2 \| good	40.573 \| good	0.488 \| good	5.629 \| good	0.188 \| good
2026-09-30T21:00:00.000Z	52 \| moderate	10.375 \| good	46.176 \| good	32.921 \| good	0.521 \| good	8.485 \| good	0.206 \| good
2026-09-30T22:00:00.000Z	56 \| moderate	11.692 \| good	52.601 \| good	23.318 \| good	0.559 \| good	15.136 \| good	0.254 \| good
2026-09-30T23:00:00.000Z	56 \| moderate	11.59 \| good	52.346 \| good	21.707 \| good	0.606 \| good	24.241 \| good	0.314 \| good

Cambridge, Massachusetts live air quality index now

Major air pollutants in Cambridge, Massachusetts

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Air quality in nearby cities

Somerville, Massachusetts

Brookline, Massachusetts

Boston, Massachusetts

Medford, Massachusetts

Everett, Massachusetts

Watertown, Massachusetts

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What is the current concentration of sulfur dioxide (SO2) in Cambridge, Massachusetts?

What is the current concentration of ozone (O3) in Cambridge, 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 current concentration of PM_2.5 in Cambridge, Massachusetts?

What is the current concentration of PM₁₀ in Cambridge, Massachusetts?

What is the current concentration of sulfur dioxide (SO₂) in Cambridge, Massachusetts?

What is the current concentration of ozone (O₃) in Cambridge, Massachusetts?

What is the current concentration of nitrogen dioxide (NO₂) in Cambridge, Massachusetts?