What are the current PM10 levels at Harwich, Massachusetts?

The current PM10 levels in Harwich, Massachusetts are 20.657 μg/m3.

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

The current sulfur dioxide (SO2) levels in Harwich, Massachusetts are 0.695 ppb.

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

The current ozone (O3) levels at Harwich, Massachusetts is 26.162 ppm.

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

The current nitrogen dioxide (NO2) levels at Harwich, Massachusetts is 4.819 ppb.

Live air quality index in Harwich, Massachusetts today

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

Stay updated with real-time air quality in Harwich, 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

Harwich, Massachusetts

Last updated: ... (Local time)

Major air pollutants in Harwich, Massachusetts

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.96 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

20.66 μg/m³

155

255

425

605+

Ozone (O₃)

26.16 ppb

201

201+

Sulfur Dioxide (SO₂)

0.69 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.82 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Harwich, Massachusetts

Get Live Pollen Counts

Harwich, Massachusetts

Scroll To Air Quality Map

Track live Harwich, Massachusetts air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T18:00:00.000Z	74 \| moderate	15.886 \| fine	76.249 \| fine	61.916 \| fine	0.68 \| good	8.419 \| good	0.329 \| good
2025-06-05T19:00:00.000Z	66 \| moderate	17.3 \| fine	78.919 \| fine	55.11 \| fine	0.703 \| good	8.845 \| good	0.268 \| good
2025-06-05T20:00:00.000Z	80 \| moderate	18.939 \| fine	76.166 \| fine	64.468 \| fine	0.339 \| good	7.35 \| good	0.292 \| good
2025-06-05T21:00:00.000Z	100 \| moderate	18.113 \| fine	56.763 \| fine	70.055 \| fine	0.59 \| good	7.049 \| good	0.292 \| good
2025-06-05T22:00:00.000Z	84 \| moderate	19.793 \| fine	73.418 \| fine	64.935 \| fine	0.571 \| good	4.892 \| good	0.357 \| good
2025-06-05T23:00:00.000Z	90 \| moderate	19.464 \| fine	63.279 \| fine	66.569 \| fine	0.588 \| good	5.116 \| good	0.378 \| good
2025-06-06T00:00:00.000Z	71 \| moderate	18.237 \| fine	72.857 \| fine	61.123 \| fine	0.601 \| good	5.099 \| good	0.394 \| good
2025-06-06T01:00:00.000Z	66 \| moderate	16.792 \| fine	73.068 \| fine	59.384 \| fine	0.579 \| good	6.551 \| good	0.394 \| good
2025-06-06T02:00:00.000Z	66 \| moderate	16.775 \| fine	65.906 \| fine	58.163 \| fine	0.584 \| good	6.753 \| good	0.394 \| good
2025-06-06T03:00:00.000Z	93 \| moderate	16.763 \| fine	59.045 \| fine	68.282 \| fine	0.598 \| good	14.847 \| good	0.409 \| good
2025-06-06T04:00:00.000Z	90 \| moderate	16.236 \| fine	61.335 \| fine	67.123 \| fine	0.58 \| good	17.326 \| good	0.354 \| good
2025-06-06T05:00:00.000Z	66 \| moderate	17.265 \| fine	40.005 \| good	53.056 \| good	0.72 \| good	6.517 \| good	0.279 \| good
2025-06-06T06:00:00.000Z	67 \| moderate	18.188 \| fine	27.997 \| good	51.816 \| good	0.721 \| good	7.178 \| good	0.222 \| good
2025-06-06T07:00:00.000Z	66 \| moderate	17.385 \| fine	39.063 \| good	44.702 \| good	0.581 \| good	8.908 \| good	0.275 \| good
2025-06-06T08:00:00.000Z	66 \| moderate	17.476 \| fine	69.753 \| fine	52 \| good	0.601 \| good	9.945 \| good	0.237 \| good
2025-06-06T09:00:00.000Z	64 \| moderate	16.475 \| fine	53.472 \| good	44.922 \| good	0.748 \| good	4.636 \| good	0.289 \| good
2025-06-06T10:00:00.000Z	64 \| moderate	16.219 \| fine	82.226 \| fine	50.992 \| good	0.755 \| good	6.961 \| good	0.289 \| good
2025-06-06T11:00:00.000Z	64 \| moderate	16.159 \| fine	51.219 \| good	46.023 \| good	0.708 \| good	5.926 \| good	0.327 \| good
2025-06-06T12:00:00.000Z	52 \| moderate	9.956 \| good	48.452 \| good	44.512 \| good	0.726 \| good	11.422 \| good	0.28 \| good
2025-06-06T13:00:00.000Z	56 \| moderate	12.051 \| good	53.153 \| good	47.143 \| good	0.748 \| good	9.859 \| good	0.244 \| good
2025-06-06T14:00:00.000Z	64 \| moderate	15.669 \| fine	47.711 \| good	43.355 \| good	0.693 \| good	8.067 \| good	0.244 \| good
2025-06-06T15:00:00.000Z	62 \| moderate	15.466 \| fine	56.456 \| fine	46.167 \| good	0.588 \| good	8.368 \| good	0.244 \| good
2025-06-06T16:00:00.000Z	58 \| moderate	13.237 \| fine	48.981 \| good	47.791 \| good	0.396 \| good	4.493 \| good	0.244 \| good
2025-06-06T17:00:00.000Z	60 \| moderate	14.447 \| fine	51.473 \| good	45.405 \| good	0.372 \| good	4.257 \| good	0.22 \| good
2025-06-06T18:00:00.000Z	69 \| moderate	19.423 \| fine	62.749 \| fine	54.555 \| good	0.55 \| good	4.58 \| good	0.244 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	15.026 \| fine	60.261 \| fine	52.9 \| good	0.354 \| good	5.743 \| good	0.275 \| good
2025-06-06T20:00:00.000Z	64 \| moderate	15.614 \| fine	60.598 \| fine	49.793 \| good	0.615 \| good	3.794 \| good	0.236 \| good
2025-06-06T21:00:00.000Z	62 \| moderate	14.8 \| fine	56.883 \| fine	48.391 \| good	0.832 \| good	5.81 \| good	0.296 \| good
2025-06-06T22:00:00.000Z	58 \| moderate	12.689 \| fine	54.208 \| good	42.732 \| good	0.777 \| good	5.653 \| good	0.28 \| good
2025-06-06T23:00:00.000Z	58 \| moderate	13.373 \| fine	60.778 \| fine	38.824 \| good	0.825 \| good	6.312 \| good	0.277 \| good
2025-06-07T00:00:00.000Z	54 \| moderate	10.907 \| good	25.841 \| good	34.588 \| good	0.721 \| good	6.843 \| good	0.301 \| good
2025-06-07T01:00:00.000Z	56 \| moderate	12.205 \| fine	38.127 \| good	43.909 \| good	0.575 \| good	7.448 \| good	0.31 \| good
2025-06-07T02:00:00.000Z	64 \| moderate	15.85 \| fine	23.935 \| good	32.96 \| good	0.65 \| good	7.436 \| good	0.313 \| good
2025-06-07T03:00:00.000Z	54 \| moderate	10.574 \| good	34.878 \| good	30.738 \| good	0.68 \| good	3.93 \| good	0.248 \| good
2025-06-07T04:00:00.000Z	38 \| good	6.518 \| good	28.495 \| good	37.922 \| good	0.7 \| good	4.47 \| good	0.234 \| good
2025-06-07T05:00:00.000Z	35 \| good	6.087 \| good	21.585 \| good	38.179 \| good	0.896 \| good	3.398 \| good	0.163 \| good
2025-06-07T06:00:00.000Z	35 \| good	6.1 \| good	29.394 \| good	37.558 \| good	0.863 \| good	3.309 \| good	0.163 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.066 \| good	35.982 \| good	32.114 \| good	0.603 \| good	4.38 \| good	0.22 \| good
2025-06-07T08:00:00.000Z	31 \| good	4.901 \| good	32.728 \| good	32.715 \| good	0.667 \| good	4.879 \| good	0.22 \| good
2025-06-07T09:00:00.000Z	58 \| moderate	12.752 \| fine	47.161 \| good	25.825 \| good	0.701 \| good	8.772 \| good	0.248 \| good
2025-06-07T10:00:00.000Z	44 \| good	8.083 \| good	11.279 \| good	26.433 \| good	0.681 \| good	6.599 \| good	0.2 \| good
2025-06-07T11:00:00.000Z	38 \| good	6.961 \| good	20.657 \| good	26.162 \| good	0.695 \| good	4.819 \| good	0.2 \| good
2025-06-07T12:00:00.000Z	52 \| moderate	9.505 \| good	37.189 \| good	29.983 \| good	0.719 \| good	3.209 \| good	0.2 \| good
2025-06-07T13:00:00.000Z	56 \| moderate	12.46 \| fine	39.047 \| good	32.525 \| good	0.735 \| good	5.444 \| good	0.263 \| good
2025-06-07T14:00:00.000Z	60 \| moderate	13.751 \| fine	57.496 \| fine	31.831 \| good	0.76 \| good	4.265 \| good	0.263 \| good
2025-06-07T15:00:00.000Z	44 \| good	8.307 \| good	38.127 \| good	30.329 \| good	0.739 \| good	3.673 \| good	0.255 \| good
2025-06-07T16:00:00.000Z	49 \| good	8.684 \| good	19.118 \| good	26.895 \| good	0.747 \| good	8.94 \| good	0.239 \| good
2025-06-07T17:00:00.000Z	52 \| moderate	10.278 \| good	23.327 \| good	29.23 \| good	0.853 \| good	6.196 \| good	0.239 \| good
2025-06-07T11:00:00.000Z	38 \| good	6.961 \| good	20.657 \| good	26.162 \| good	0.695 \| good	4.819 \| good	0.2 \| good
2025-06-07T12:00:00.000Z	32 \| good	3.72 \| good	16.067 \| good	34.809 \| good	0.052 \| good	1.367 \| good	0.138 \| good
2025-06-07T13:00:00.000Z	44 \| good	7.94 \| good	34.97 \| good	39.486 \| good	0.108 \| good	1.511 \| good	0.133 \| good
2025-06-07T14:00:00.000Z	49 \| good	9.003 \| good	39.895 \| good	42.66 \| good	0.093 \| good	1.358 \| good	0.133 \| good
2025-06-07T15:00:00.000Z	44 \| good	8.172 \| good	35.611 \| good	39.652 \| good	0.079 \| good	1.206 \| good	0.133 \| good
2025-06-07T16:00:00.000Z	44 \| good	7.913 \| good	34.619 \| good	37.726 \| good	0.153 \| good	1.681 \| good	0.14 \| good
2025-06-07T17:00:00.000Z	38 \| good	7.485 \| good	32.6 \| good	38.529 \| good	0.121 \| good	1.538 \| good	0.14 \| good
2025-06-07T18:00:00.000Z	38 \| good	7.128 \| good	31.489 \| good	38.988 \| good	0.089 \| good	1.394 \| good	0.14 \| good
2025-06-07T19:00:00.000Z	38 \| good	6.87 \| good	30.266 \| good	38.857 \| good	0.193 \| good	3.68 \| good	0.165 \| good
2025-06-07T20:00:00.000Z	38 \| good	6.6 \| good	29.734 \| good	37.579 \| good	0.151 \| good	3.677 \| good	0.165 \| good
2025-06-07T21:00:00.000Z	38 \| good	6.547 \| good	29.317 \| good	38.024 \| good	0.108 \| good	3.675 \| good	0.166 \| good
2025-06-07T22:00:00.000Z	37 \| good	6.453 \| good	28.959 \| good	39.825 \| good	0.161 \| good	7.407 \| good	0.19 \| good
2025-06-07T23:00:00.000Z	40 \| good	6.266 \| good	27.936 \| good	42.727 \| good	0.12 \| good	7.575 \| good	0.191 \| good
2025-06-08T00:00:00.000Z	34 \| good	3.456 \| good	15 \| good	36.625 \| good	0.079 \| good	7.742 \| good	0.193 \| good
2025-06-08T01:00:00.000Z	34 \| good	3.889 \| good	17 \| good	36.849 \| good	0.175 \| good	5.454 \| good	0.174 \| good
2025-06-08T02:00:00.000Z	35 \| good	4.435 \| good	19 \| good	38.118 \| good	0.145 \| good	5.443 \| good	0.174 \| good
2025-06-08T03:00:00.000Z	36 \| good	4.725 \| good	20.936 \| good	39.047 \| good	0.115 \| good	5.433 \| good	0.173 \| good
2025-06-08T04:00:00.000Z	37 \| good	5.018 \| good	21.526 \| good	40.44 \| good	0.263 \| good	3.881 \| good	0.166 \| good
2025-06-08T05:00:00.000Z	36 \| good	5.725 \| good	24.967 \| good	39.046 \| good	0.233 \| good	3.711 \| good	0.164 \| good
2025-06-08T06:00:00.000Z	34 \| good	6.39 \| good	28.331 \| good	37.335 \| good	0.202 \| good	3.541 \| good	0.162 \| good
2025-06-08T07:00:00.000Z	38 \| good	6.829 \| good	30.12 \| good	34.67 \| good	0.168 \| good	1.493 \| good	0.136 \| good
2025-06-08T08:00:00.000Z	44 \| good	7.869 \| good	34.329 \| good	32.778 \| good	0.152 \| good	1.359 \| good	0.136 \| good
2025-06-08T09:00:00.000Z	49 \| good	9.283 \| good	41.394 \| good	33.997 \| good	0.135 \| good	1.224 \| good	0.136 \| good
2025-06-08T10:00:00.000Z	49 \| good	9.095 \| good	40.906 \| good	34.532 \| good	0.091 \| good	1.349 \| good	0.135 \| good
2025-06-08T11:00:00.000Z	54 \| moderate	10.712 \| good	47.386 \| good	35.074 \| good	0.084 \| good	1.211 \| good	0.134 \| good
2025-06-08T12:00:00.000Z	56 \| moderate	11.839 \| good	52.253 \| good	38.31 \| good	0.078 \| good	1.072 \| good	0.134 \| good
2025-06-08T13:00:00.000Z	54 \| moderate	11.224 \| good	49.709 \| good	40.713 \| good	0.088 \| good	0.695 \| good	0.143 \| good
2025-06-08T14:00:00.000Z	56 \| moderate	11.654 \| good	51.57 \| good	43.558 \| good	0.09 \| good	0.607 \| good	0.139 \| good
2025-06-08T15:00:00.000Z	56 \| moderate	11.675 \| good	51.379 \| good	46.099 \| good	0.092 \| good	0.519 \| good	0.135 \| good
2025-06-08T16:00:00.000Z	54 \| moderate	11.069 \| good	48.602 \| good	46.809 \| good	0.107 \| good	0.765 \| good	0.17 \| good
2025-06-08T17:00:00.000Z	54 \| moderate	10.95 \| good	48.292 \| good	47.717 \| good	0.115 \| good	0.703 \| good	0.163 \| good
2025-06-08T18:00:00.000Z	52 \| moderate	10.059 \| good	45.019 \| good	47.442 \| good	0.123 \| good	0.64 \| good	0.157 \| good
2025-06-08T19:00:00.000Z	52 \| moderate	9.762 \| good	43.069 \| good	47.932 \| good	0.072 \| good	1.03 \| good	0.198 \| good
2025-06-08T20:00:00.000Z	52 \| moderate	9.872 \| good	44.107 \| good	48.988 \| good	0.076 \| good	0.95 \| good	0.192 \| good
2025-06-08T21:00:00.000Z	52 \| moderate	9.704 \| good	43.369 \| good	48.667 \| good	0.08 \| good	0.869 \| good	0.185 \| good
2025-06-08T22:00:00.000Z	49 \| good	8.607 \| good	37.568 \| good	49.948 \| good	0.085 \| good	1.335 \| good	0.207 \| good
2025-06-08T23:00:00.000Z	44 \| good	7.909 \| good	34.45 \| good	44.751 \| good	0.085 \| good	1.185 \| good	0.201 \| good
2025-06-09T00:00:00.000Z	38 \| good	6.027 \| good	27.049 \| good	40.623 \| good	0.085 \| good	1.035 \| good	0.194 \| good
2025-06-09T01:00:00.000Z	38 \| good	7.139 \| good	31.679 \| good	39.834 \| good	0.15 \| good	1.243 \| good	0.213 \| good
2025-06-09T02:00:00.000Z	44 \| good	7.69 \| good	33.703 \| good	39.402 \| good	0.142 \| good	0.978 \| good	0.208 \| good
2025-06-09T03:00:00.000Z	44 \| good	8.34 \| good	36.703 \| good	38.674 \| good	0.134 \| good	0.714 \| good	0.202 \| good
2025-06-09T04:00:00.000Z	49 \| good	8.562 \| good	37.259 \| good	37.953 \| good	0.195 \| good	1.191 \| good	0.225 \| good
2025-06-09T05:00:00.000Z	49 \| good	8.834 \| good	38.709 \| good	38.081 \| good	0.181 \| good	0.876 \| good	0.221 \| good
2025-06-09T06:00:00.000Z	54 \| moderate	11.327 \| good	14.63 \| good	42.242 \| good	0.167 \| good	0.549 \| good	0.216 \| good
2025-06-09T07:00:00.000Z	49 \| good	8.54 \| good	37.322 \| good	38.561 \| good	0.227 \| good	1.059 \| good	0.232 \| good
2025-06-09T08:00:00.000Z	44 \| good	8.371 \| good	36.967 \| good	39.586 \| good	0.207 \| good	0.776 \| good	0.23 \| good
2025-06-09T09:00:00.000Z	44 \| good	7.56 \| good	33.317 \| good	36.794 \| good	0.187 \| good	0.494 \| good	0.227 \| good
2025-06-09T10:00:00.000Z	38 \| good	6.624 \| good	29.437 \| good	36.622 \| good	0.153 \| good	0.852 \| good	0.21 \| good
2025-06-09T11:00:00.000Z	35 \| good	6.14 \| good	27.308 \| good	37.618 \| good	0.129 \| good	0.715 \| good	0.202 \| good

Harwich

Empower business decisions with accurate air quality data

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

0.20ppm

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

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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 Harwich, Massachusetts updated?

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

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

The worst air quality in Harwich, Massachusetts was recorded at 06:00:00 on 2025-06-06.

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

The best air quality in Harwich, Massachusetts was recorded at 08:00:00 on 2025-06-07.

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

The real-time air quality index in Harwich, Massachusetts is 38, currently categorized as Good.

Which pollutant is found most often in Harwich, Massachusetts?

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

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

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

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

The measured PM_2.5 levels in Harwich, Massachusetts at present are 6.961 μg/m³.

What are the current PM₁₀ levels at Harwich, Massachusetts?

The current PM₁₀ levels in Harwich, Massachusetts are 20.657 μg/m³.

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

The current carbon monoxide (CO) level in Harwich, Massachusetts is 0.2 ppm.

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

The current sulfur dioxide (SO₂) levels in Harwich, Massachusetts are 0.695 ppb.

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

The current ozone (O₃) levels at Harwich, Massachusetts is 26.162 ppm.

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

The current nitrogen dioxide (NO₂) levels at Harwich, Massachusetts is 4.819 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T18:00:00.000Z	74 \| moderate	15.886 \| fine	76.249 \| fine	61.916 \| fine	0.68 \| good	8.419 \| good	0.329 \| good
2025-06-05T19:00:00.000Z	66 \| moderate	17.3 \| fine	78.919 \| fine	55.11 \| fine	0.703 \| good	8.845 \| good	0.268 \| good
2025-06-05T20:00:00.000Z	80 \| moderate	18.939 \| fine	76.166 \| fine	64.468 \| fine	0.339 \| good	7.35 \| good	0.292 \| good
2025-06-05T21:00:00.000Z	100 \| moderate	18.113 \| fine	56.763 \| fine	70.055 \| fine	0.59 \| good	7.049 \| good	0.292 \| good
2025-06-05T22:00:00.000Z	84 \| moderate	19.793 \| fine	73.418 \| fine	64.935 \| fine	0.571 \| good	4.892 \| good	0.357 \| good
2025-06-05T23:00:00.000Z	90 \| moderate	19.464 \| fine	63.279 \| fine	66.569 \| fine	0.588 \| good	5.116 \| good	0.378 \| good
2025-06-06T00:00:00.000Z	71 \| moderate	18.237 \| fine	72.857 \| fine	61.123 \| fine	0.601 \| good	5.099 \| good	0.394 \| good
2025-06-06T01:00:00.000Z	66 \| moderate	16.792 \| fine	73.068 \| fine	59.384 \| fine	0.579 \| good	6.551 \| good	0.394 \| good
2025-06-06T02:00:00.000Z	66 \| moderate	16.775 \| fine	65.906 \| fine	58.163 \| fine	0.584 \| good	6.753 \| good	0.394 \| good
2025-06-06T03:00:00.000Z	93 \| moderate	16.763 \| fine	59.045 \| fine	68.282 \| fine	0.598 \| good	14.847 \| good	0.409 \| good
2025-06-06T04:00:00.000Z	90 \| moderate	16.236 \| fine	61.335 \| fine	67.123 \| fine	0.58 \| good	17.326 \| good	0.354 \| good
2025-06-06T05:00:00.000Z	66 \| moderate	17.265 \| fine	40.005 \| good	53.056 \| good	0.72 \| good	6.517 \| good	0.279 \| good
2025-06-06T06:00:00.000Z	67 \| moderate	18.188 \| fine	27.997 \| good	51.816 \| good	0.721 \| good	7.178 \| good	0.222 \| good
2025-06-06T07:00:00.000Z	66 \| moderate	17.385 \| fine	39.063 \| good	44.702 \| good	0.581 \| good	8.908 \| good	0.275 \| good
2025-06-06T08:00:00.000Z	66 \| moderate	17.476 \| fine	69.753 \| fine	52 \| good	0.601 \| good	9.945 \| good	0.237 \| good
2025-06-06T09:00:00.000Z	64 \| moderate	16.475 \| fine	53.472 \| good	44.922 \| good	0.748 \| good	4.636 \| good	0.289 \| good
2025-06-06T10:00:00.000Z	64 \| moderate	16.219 \| fine	82.226 \| fine	50.992 \| good	0.755 \| good	6.961 \| good	0.289 \| good
2025-06-06T11:00:00.000Z	64 \| moderate	16.159 \| fine	51.219 \| good	46.023 \| good	0.708 \| good	5.926 \| good	0.327 \| good
2025-06-06T12:00:00.000Z	52 \| moderate	9.956 \| good	48.452 \| good	44.512 \| good	0.726 \| good	11.422 \| good	0.28 \| good
2025-06-06T13:00:00.000Z	56 \| moderate	12.051 \| good	53.153 \| good	47.143 \| good	0.748 \| good	9.859 \| good	0.244 \| good
2025-06-06T14:00:00.000Z	64 \| moderate	15.669 \| fine	47.711 \| good	43.355 \| good	0.693 \| good	8.067 \| good	0.244 \| good
2025-06-06T15:00:00.000Z	62 \| moderate	15.466 \| fine	56.456 \| fine	46.167 \| good	0.588 \| good	8.368 \| good	0.244 \| good
2025-06-06T16:00:00.000Z	58 \| moderate	13.237 \| fine	48.981 \| good	47.791 \| good	0.396 \| good	4.493 \| good	0.244 \| good
2025-06-06T17:00:00.000Z	60 \| moderate	14.447 \| fine	51.473 \| good	45.405 \| good	0.372 \| good	4.257 \| good	0.22 \| good
2025-06-06T18:00:00.000Z	69 \| moderate	19.423 \| fine	62.749 \| fine	54.555 \| good	0.55 \| good	4.58 \| good	0.244 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	15.026 \| fine	60.261 \| fine	52.9 \| good	0.354 \| good	5.743 \| good	0.275 \| good
2025-06-06T20:00:00.000Z	64 \| moderate	15.614 \| fine	60.598 \| fine	49.793 \| good	0.615 \| good	3.794 \| good	0.236 \| good
2025-06-06T21:00:00.000Z	62 \| moderate	14.8 \| fine	56.883 \| fine	48.391 \| good	0.832 \| good	5.81 \| good	0.296 \| good
2025-06-06T22:00:00.000Z	58 \| moderate	12.689 \| fine	54.208 \| good	42.732 \| good	0.777 \| good	5.653 \| good	0.28 \| good
2025-06-06T23:00:00.000Z	58 \| moderate	13.373 \| fine	60.778 \| fine	38.824 \| good	0.825 \| good	6.312 \| good	0.277 \| good
2025-06-07T00:00:00.000Z	54 \| moderate	10.907 \| good	25.841 \| good	34.588 \| good	0.721 \| good	6.843 \| good	0.301 \| good
2025-06-07T01:00:00.000Z	56 \| moderate	12.205 \| fine	38.127 \| good	43.909 \| good	0.575 \| good	7.448 \| good	0.31 \| good
2025-06-07T02:00:00.000Z	64 \| moderate	15.85 \| fine	23.935 \| good	32.96 \| good	0.65 \| good	7.436 \| good	0.313 \| good
2025-06-07T03:00:00.000Z	54 \| moderate	10.574 \| good	34.878 \| good	30.738 \| good	0.68 \| good	3.93 \| good	0.248 \| good
2025-06-07T04:00:00.000Z	38 \| good	6.518 \| good	28.495 \| good	37.922 \| good	0.7 \| good	4.47 \| good	0.234 \| good
2025-06-07T05:00:00.000Z	35 \| good	6.087 \| good	21.585 \| good	38.179 \| good	0.896 \| good	3.398 \| good	0.163 \| good
2025-06-07T06:00:00.000Z	35 \| good	6.1 \| good	29.394 \| good	37.558 \| good	0.863 \| good	3.309 \| good	0.163 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.066 \| good	35.982 \| good	32.114 \| good	0.603 \| good	4.38 \| good	0.22 \| good
2025-06-07T08:00:00.000Z	31 \| good	4.901 \| good	32.728 \| good	32.715 \| good	0.667 \| good	4.879 \| good	0.22 \| good
2025-06-07T09:00:00.000Z	58 \| moderate	12.752 \| fine	47.161 \| good	25.825 \| good	0.701 \| good	8.772 \| good	0.248 \| good
2025-06-07T10:00:00.000Z	44 \| good	8.083 \| good	11.279 \| good	26.433 \| good	0.681 \| good	6.599 \| good	0.2 \| good
2025-06-07T11:00:00.000Z	38 \| good	6.961 \| good	20.657 \| good	26.162 \| good	0.695 \| good	4.819 \| good	0.2 \| good
2025-06-07T12:00:00.000Z	52 \| moderate	9.505 \| good	37.189 \| good	29.983 \| good	0.719 \| good	3.209 \| good	0.2 \| good
2025-06-07T13:00:00.000Z	56 \| moderate	12.46 \| fine	39.047 \| good	32.525 \| good	0.735 \| good	5.444 \| good	0.263 \| good
2025-06-07T14:00:00.000Z	60 \| moderate	13.751 \| fine	57.496 \| fine	31.831 \| good	0.76 \| good	4.265 \| good	0.263 \| good
2025-06-07T15:00:00.000Z	44 \| good	8.307 \| good	38.127 \| good	30.329 \| good	0.739 \| good	3.673 \| good	0.255 \| good
2025-06-07T16:00:00.000Z	49 \| good	8.684 \| good	19.118 \| good	26.895 \| good	0.747 \| good	8.94 \| good	0.239 \| good
2025-06-07T17:00:00.000Z	52 \| moderate	10.278 \| good	23.327 \| good	29.23 \| good	0.853 \| good	6.196 \| good	0.239 \| good
2025-06-07T11:00:00.000Z	38 \| good	6.961 \| good	20.657 \| good	26.162 \| good	0.695 \| good	4.819 \| good	0.2 \| good
2025-06-07T12:00:00.000Z	32 \| good	3.72 \| good	16.067 \| good	34.809 \| good	0.052 \| good	1.367 \| good	0.138 \| good
2025-06-07T13:00:00.000Z	44 \| good	7.94 \| good	34.97 \| good	39.486 \| good	0.108 \| good	1.511 \| good	0.133 \| good
2025-06-07T14:00:00.000Z	49 \| good	9.003 \| good	39.895 \| good	42.66 \| good	0.093 \| good	1.358 \| good	0.133 \| good
2025-06-07T15:00:00.000Z	44 \| good	8.172 \| good	35.611 \| good	39.652 \| good	0.079 \| good	1.206 \| good	0.133 \| good
2025-06-07T16:00:00.000Z	44 \| good	7.913 \| good	34.619 \| good	37.726 \| good	0.153 \| good	1.681 \| good	0.14 \| good
2025-06-07T17:00:00.000Z	38 \| good	7.485 \| good	32.6 \| good	38.529 \| good	0.121 \| good	1.538 \| good	0.14 \| good
2025-06-07T18:00:00.000Z	38 \| good	7.128 \| good	31.489 \| good	38.988 \| good	0.089 \| good	1.394 \| good	0.14 \| good
2025-06-07T19:00:00.000Z	38 \| good	6.87 \| good	30.266 \| good	38.857 \| good	0.193 \| good	3.68 \| good	0.165 \| good
2025-06-07T20:00:00.000Z	38 \| good	6.6 \| good	29.734 \| good	37.579 \| good	0.151 \| good	3.677 \| good	0.165 \| good
2025-06-07T21:00:00.000Z	38 \| good	6.547 \| good	29.317 \| good	38.024 \| good	0.108 \| good	3.675 \| good	0.166 \| good
2025-06-07T22:00:00.000Z	37 \| good	6.453 \| good	28.959 \| good	39.825 \| good	0.161 \| good	7.407 \| good	0.19 \| good
2025-06-07T23:00:00.000Z	40 \| good	6.266 \| good	27.936 \| good	42.727 \| good	0.12 \| good	7.575 \| good	0.191 \| good
2025-06-08T00:00:00.000Z	34 \| good	3.456 \| good	15 \| good	36.625 \| good	0.079 \| good	7.742 \| good	0.193 \| good
2025-06-08T01:00:00.000Z	34 \| good	3.889 \| good	17 \| good	36.849 \| good	0.175 \| good	5.454 \| good	0.174 \| good
2025-06-08T02:00:00.000Z	35 \| good	4.435 \| good	19 \| good	38.118 \| good	0.145 \| good	5.443 \| good	0.174 \| good
2025-06-08T03:00:00.000Z	36 \| good	4.725 \| good	20.936 \| good	39.047 \| good	0.115 \| good	5.433 \| good	0.173 \| good
2025-06-08T04:00:00.000Z	37 \| good	5.018 \| good	21.526 \| good	40.44 \| good	0.263 \| good	3.881 \| good	0.166 \| good
2025-06-08T05:00:00.000Z	36 \| good	5.725 \| good	24.967 \| good	39.046 \| good	0.233 \| good	3.711 \| good	0.164 \| good
2025-06-08T06:00:00.000Z	34 \| good	6.39 \| good	28.331 \| good	37.335 \| good	0.202 \| good	3.541 \| good	0.162 \| good
2025-06-08T07:00:00.000Z	38 \| good	6.829 \| good	30.12 \| good	34.67 \| good	0.168 \| good	1.493 \| good	0.136 \| good
2025-06-08T08:00:00.000Z	44 \| good	7.869 \| good	34.329 \| good	32.778 \| good	0.152 \| good	1.359 \| good	0.136 \| good
2025-06-08T09:00:00.000Z	49 \| good	9.283 \| good	41.394 \| good	33.997 \| good	0.135 \| good	1.224 \| good	0.136 \| good
2025-06-08T10:00:00.000Z	49 \| good	9.095 \| good	40.906 \| good	34.532 \| good	0.091 \| good	1.349 \| good	0.135 \| good
2025-06-08T11:00:00.000Z	54 \| moderate	10.712 \| good	47.386 \| good	35.074 \| good	0.084 \| good	1.211 \| good	0.134 \| good
2025-06-08T12:00:00.000Z	56 \| moderate	11.839 \| good	52.253 \| good	38.31 \| good	0.078 \| good	1.072 \| good	0.134 \| good
2025-06-08T13:00:00.000Z	54 \| moderate	11.224 \| good	49.709 \| good	40.713 \| good	0.088 \| good	0.695 \| good	0.143 \| good
2025-06-08T14:00:00.000Z	56 \| moderate	11.654 \| good	51.57 \| good	43.558 \| good	0.09 \| good	0.607 \| good	0.139 \| good
2025-06-08T15:00:00.000Z	56 \| moderate	11.675 \| good	51.379 \| good	46.099 \| good	0.092 \| good	0.519 \| good	0.135 \| good
2025-06-08T16:00:00.000Z	54 \| moderate	11.069 \| good	48.602 \| good	46.809 \| good	0.107 \| good	0.765 \| good	0.17 \| good
2025-06-08T17:00:00.000Z	54 \| moderate	10.95 \| good	48.292 \| good	47.717 \| good	0.115 \| good	0.703 \| good	0.163 \| good
2025-06-08T18:00:00.000Z	52 \| moderate	10.059 \| good	45.019 \| good	47.442 \| good	0.123 \| good	0.64 \| good	0.157 \| good
2025-06-08T19:00:00.000Z	52 \| moderate	9.762 \| good	43.069 \| good	47.932 \| good	0.072 \| good	1.03 \| good	0.198 \| good
2025-06-08T20:00:00.000Z	52 \| moderate	9.872 \| good	44.107 \| good	48.988 \| good	0.076 \| good	0.95 \| good	0.192 \| good
2025-06-08T21:00:00.000Z	52 \| moderate	9.704 \| good	43.369 \| good	48.667 \| good	0.08 \| good	0.869 \| good	0.185 \| good
2025-06-08T22:00:00.000Z	49 \| good	8.607 \| good	37.568 \| good	49.948 \| good	0.085 \| good	1.335 \| good	0.207 \| good
2025-06-08T23:00:00.000Z	44 \| good	7.909 \| good	34.45 \| good	44.751 \| good	0.085 \| good	1.185 \| good	0.201 \| good
2025-06-09T00:00:00.000Z	38 \| good	6.027 \| good	27.049 \| good	40.623 \| good	0.085 \| good	1.035 \| good	0.194 \| good
2025-06-09T01:00:00.000Z	38 \| good	7.139 \| good	31.679 \| good	39.834 \| good	0.15 \| good	1.243 \| good	0.213 \| good
2025-06-09T02:00:00.000Z	44 \| good	7.69 \| good	33.703 \| good	39.402 \| good	0.142 \| good	0.978 \| good	0.208 \| good
2025-06-09T03:00:00.000Z	44 \| good	8.34 \| good	36.703 \| good	38.674 \| good	0.134 \| good	0.714 \| good	0.202 \| good
2025-06-09T04:00:00.000Z	49 \| good	8.562 \| good	37.259 \| good	37.953 \| good	0.195 \| good	1.191 \| good	0.225 \| good
2025-06-09T05:00:00.000Z	49 \| good	8.834 \| good	38.709 \| good	38.081 \| good	0.181 \| good	0.876 \| good	0.221 \| good
2025-06-09T06:00:00.000Z	54 \| moderate	11.327 \| good	14.63 \| good	42.242 \| good	0.167 \| good	0.549 \| good	0.216 \| good
2025-06-09T07:00:00.000Z	49 \| good	8.54 \| good	37.322 \| good	38.561 \| good	0.227 \| good	1.059 \| good	0.232 \| good
2025-06-09T08:00:00.000Z	44 \| good	8.371 \| good	36.967 \| good	39.586 \| good	0.207 \| good	0.776 \| good	0.23 \| good
2025-06-09T09:00:00.000Z	44 \| good	7.56 \| good	33.317 \| good	36.794 \| good	0.187 \| good	0.494 \| good	0.227 \| good
2025-06-09T10:00:00.000Z	38 \| good	6.624 \| good	29.437 \| good	36.622 \| good	0.153 \| good	0.852 \| good	0.21 \| good
2025-06-09T11:00:00.000Z	35 \| good	6.14 \| good	27.308 \| good	37.618 \| good	0.129 \| good	0.715 \| good	0.202 \| good

Live air quality index in Harwich, Massachusetts today

Major air pollutants in Harwich, Massachusetts

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Harwich, Massachusetts air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

Brewster, Massachusetts

Yarmouth, Massachusetts

Dennis, Massachusetts

Barnstable Town, Massachusetts

Mashpee, Massachusetts

Sandwich, Massachusetts

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Frequently asked questions

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

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

Which pollutant is found most often in Harwich, Massachusetts?

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

What are the current PM10 levels at Harwich, Massachusetts?

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

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

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

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

What are the current PM₁₀ levels at Harwich, Massachusetts?

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

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

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