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

The current PM10 concentration at Holyoke, Massachusetts is 37.55 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Holyoke, Massachusetts is 0.132 ppb.

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

The current ozone (O3) concentration at Holyoke, Massachusetts is 41.103 ppm.

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

The current nitrogen dioxide (NO2) concentration at Holyoke, Massachusetts is 2.022 ppb.

Holyoke, Massachusetts live air quality index now

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

Stay updated with real-time air quality in Holyoke, 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

Holyoke, Massachusetts

Last updated: ... (Local time)

Major air pollutants in Holyoke, Massachusetts

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.43 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

41.00 μg/m³

155

255

425

605+

Ozone (O₃)

9.44 ppb

201

201+

Sulfur Dioxide (SO₂)

0.29 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.45 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Holyoke, Massachusetts

Get Live Pollen Counts

Holyoke, Massachusetts

Scroll To Air Quality Map

Track live Holyoke, Massachusetts air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-13T14:00:00.000Z	33 \| good	5.994 \| good	21.172 \| good	18.829 \| good	0.179 \| good	4.985 \| good	0.265 \| good
2025-09-13T15:00:00.000Z	33 \| good	5.804 \| good	19.915 \| good	20.911 \| good	0.152 \| good	5.102 \| good	0.232 \| good
2025-09-13T16:00:00.000Z	33 \| good	5.725 \| good	15.804 \| good	27.182 \| good	0.112 \| good	3.406 \| good	0.232 \| good
2025-09-13T17:00:00.000Z	33 \| good	5.668 \| good	20.317 \| good	30.238 \| good	0.129 \| good	2.056 \| good	0.263 \| good
2025-09-13T18:00:00.000Z	44 \| good	7.559 \| good	18.662 \| good	34.937 \| good	0.159 \| good	2.017 \| good	0.279 \| good
2025-09-13T19:00:00.000Z	44 \| good	8.445 \| good	19.317 \| good	38.636 \| good	0.1 \| good	2.03 \| good	0.232 \| good
2025-09-13T20:00:00.000Z	39 \| good	6.33 \| good	23.691 \| good	41.778 \| good	0.13 \| good	3.497 \| good	0.232 \| good
2025-09-13T21:00:00.000Z	37 \| good	6.452 \| good	28.72 \| good	40.488 \| good	0.146 \| good	4.135 \| good	0.232 \| good
2025-09-13T22:00:00.000Z	38 \| good	7.135 \| good	19.634 \| good	36.755 \| good	0.228 \| good	5.239 \| good	0.232 \| good
2025-09-13T23:00:00.000Z	44 \| good	7.548 \| good	19.824 \| good	39.317 \| good	0.183 \| good	5.112 \| good	0.263 \| good
2025-09-14T00:00:00.000Z	38 \| good	6.87 \| good	24.864 \| good	36.635 \| good	0.194 \| good	4.961 \| good	0.249 \| good
2025-09-14T01:00:00.000Z	44 \| good	7.569 \| good	30.659 \| good	38.131 \| good	0.252 \| good	5.566 \| good	0.232 \| good
2025-09-14T02:00:00.000Z	38 \| good	7.491 \| good	31.333 \| good	37.121 \| good	0.228 \| good	5.405 \| good	0.232 \| good
2025-09-14T03:00:00.000Z	62 \| moderate	15.249 \| fine	68.626 \| fine	29.775 \| good	1.064 \| good	6.293 \| good	0.222 \| good
2025-09-14T04:00:00.000Z	44 \| good	8.261 \| good	28.721 \| good	33.993 \| good	0.272 \| good	6.351 \| good	0.295 \| good
2025-09-14T05:00:00.000Z	38 \| good	7.173 \| good	27.832 \| good	32.968 \| good	0.266 \| good	7.216 \| good	0.248 \| good
2025-09-14T06:00:00.000Z	28 \| good	5.317 \| good	16.936 \| good	30.422 \| good	0.504 \| good	5.813 \| good	0.217 \| good
2025-09-14T07:00:00.000Z	33 \| good	6.014 \| good	20.04 \| good	29.24 \| good	0.191 \| good	6.553 \| good	0.248 \| good
2025-09-14T08:00:00.000Z	33 \| good	6.243 \| good	19.11 \| good	24.187 \| good	0.201 \| good	9.148 \| good	0.25 \| good
2025-09-14T09:00:00.000Z	38 \| good	7.123 \| good	27.316 \| good	24.14 \| good	0.225 \| good	8.74 \| good	0.25 \| good
2025-09-14T10:00:00.000Z	38 \| good	7.381 \| good	28.327 \| good	23.206 \| good	0.226 \| good	4.754 \| good	0.217 \| good
2025-09-14T11:00:00.000Z	33 \| good	6.478 \| good	22.406 \| good	21.718 \| good	0.237 \| good	3.11 \| good	0.217 \| good
2025-09-14T12:00:00.000Z	38 \| good	7.381 \| good	25.322 \| good	24.695 \| good	0.117 \| good	5.245 \| good	0.274 \| good
2025-09-14T13:00:00.000Z	38 \| good	7.154 \| good	25.852 \| good	17.342 \| good	0.188 \| good	4.093 \| good	0.291 \| good
2025-09-14T14:00:00.000Z	33 \| good	5.623 \| good	18.088 \| good	17.995 \| good	0.122 \| good	4.106 \| good	0.291 \| good
2025-09-14T15:00:00.000Z	38 \| good	7.438 \| good	29.564 \| good	25.169 \| good	0.141 \| good	2.82 \| good	0.278 \| good
2025-09-14T16:00:00.000Z	44 \| good	7.542 \| good	23.354 \| good	30.024 \| good	0.139 \| good	2.558 \| good	0.274 \| good
2025-09-14T17:00:00.000Z	38 \| good	7.061 \| good	21.188 \| good	33.571 \| good	0.147 \| good	1.904 \| good	0.22 \| good
2025-09-14T18:00:00.000Z	44 \| good	7.585 \| good	25.553 \| good	36.843 \| good	0.142 \| good	2.422 \| good	0.262 \| good
2025-09-14T19:00:00.000Z	44 \| good	8.221 \| good	26.181 \| good	40.628 \| good	0.142 \| good	2.664 \| good	0.266 \| good
2025-09-14T20:00:00.000Z	49 \| good	8.604 \| good	31.446 \| good	41.654 \| good	0.149 \| good	2.201 \| good	0.263 \| good
2025-09-14T21:00:00.000Z	44 \| good	8.223 \| good	29.404 \| good	42.819 \| good	0.124 \| good	2.162 \| good	0.235 \| good
2025-09-14T22:00:00.000Z	44 \| good	8.028 \| good	21.347 \| good	44.476 \| good	0.151 \| good	2.094 \| good	0.283 \| good
2025-09-14T23:00:00.000Z	44 \| good	8.244 \| good	33.574 \| good	41.85 \| good	0.153 \| good	3.366 \| good	0.312 \| good
2025-09-15T00:00:00.000Z	44 \| good	8.283 \| good	28.139 \| good	36.271 \| good	0.222 \| good	4.469 \| good	0.36 \| good
2025-09-15T01:00:00.000Z	44 \| good	8.375 \| good	32.122 \| good	29.606 \| good	0.202 \| good	14.133 \| good	0.368 \| good
2025-09-15T02:00:00.000Z	38 \| good	6.871 \| good	18.068 \| good	26.206 \| good	0.262 \| good	17.676 \| good	0.398 \| good
2025-09-15T03:00:00.000Z	38 \| good	6.886 \| good	31.5 \| good	20.092 \| good	0.233 \| good	20.166 \| good	0.401 \| good
2025-09-15T04:00:00.000Z	38 \| good	7.357 \| good	23.82 \| good	21.025 \| good	0.191 \| good	15.559 \| good	0.345 \| good
2025-09-15T05:00:00.000Z	44 \| good	8.378 \| good	28.741 \| good	15.832 \| good	0.146 \| good	10.418 \| good	0.306 \| good
2025-09-15T06:00:00.000Z	44 \| good	8.1 \| good	30.511 \| good	11.356 \| good	0.18 \| good	7.658 \| good	0.288 \| good
2025-09-15T07:00:00.000Z	44 \| good	8.042 \| good	23.442 \| good	16.066 \| good	0.175 \| good	5.662 \| good	0.255 \| good
2025-09-15T08:00:00.000Z	44 \| good	8.373 \| good	29.462 \| good	13.377 \| good	0.146 \| good	4.825 \| good	0.226 \| good
2025-09-15T09:00:00.000Z	44 \| good	8.384 \| good	33.813 \| good	11.772 \| good	0.158 \| good	6.356 \| good	0.238 \| good
2025-09-15T10:00:00.000Z	44 \| good	8.075 \| good	22.004 \| good	12.403 \| good	0.18 \| good	5.439 \| good	0.262 \| good
2025-09-15T11:00:00.000Z	49 \| good	9.193 \| good	37.878 \| good	17.264 \| good	0.198 \| good	6.541 \| good	0.303 \| good
2025-09-15T12:00:00.000Z	44 \| good	8.463 \| good	35.58 \| good	12.588 \| good	0.323 \| good	5.841 \| good	0.279 \| good
2025-09-15T13:00:00.000Z	49 \| good	9.426 \| good	41.002 \| good	9.436 \| good	0.29 \| good	5.452 \| good	0.282 \| good
2025-09-15T00:00:00.000Z	38 \| good	7.392 \| good	32.789 \| good	20.923 \| good	0.587 \| good	17.313 \| good	0.328 \| good
2025-09-15T01:00:00.000Z	54 \| moderate	10.546 \| good	46.726 \| good	17.457 \| good	0.651 \| good	19.104 \| good	0.352 \| good
2025-09-15T02:00:00.000Z	60 \| moderate	13.719 \| fine	61.74 \| fine	15.159 \| good	0.714 \| good	20.895 \| good	0.376 \| good
2025-09-15T03:00:00.000Z	62 \| moderate	15.104 \| fine	67.613 \| fine	12.63 \| good	0.777 \| good	22.687 \| good	0.4 \| good
2025-09-15T04:00:00.000Z	62 \| moderate	14.745 \| fine	65.83 \| fine	13.336 \| good	0.712 \| good	19.999 \| good	0.378 \| good
2025-09-15T05:00:00.000Z	58 \| moderate	13.043 \| fine	58.176 \| fine	13.426 \| good	0.646 \| good	17.312 \| good	0.356 \| good
2025-09-15T06:00:00.000Z	54 \| moderate	10.824 \| good	47.974 \| good	12.373 \| good	0.581 \| good	14.625 \| good	0.334 \| good
2025-09-15T07:00:00.000Z	44 \| good	8.135 \| good	36.16 \| good	11.109 \| good	0.543 \| good	11.736 \| good	0.303 \| good
2025-09-15T08:00:00.000Z	33 \| good	6.407 \| good	28.534 \| good	12.443 \| good	0.505 \| good	8.848 \| good	0.273 \| good
2025-09-15T09:00:00.000Z	33 \| good	6.239 \| good	27.715 \| good	14.261 \| good	0.467 \| good	5.959 \| good	0.243 \| good
2025-09-15T10:00:00.000Z	27 \| good	5.333 \| good	23.099 \| good	11.169 \| good	0.476 \| good	5.255 \| good	0.237 \| good
2025-09-15T11:00:00.000Z	27 \| good	5.226 \| good	22.432 \| good	9.863 \| good	0.486 \| good	4.552 \| good	0.231 \| good
2025-09-15T12:00:00.000Z	33 \| good	6.009 \| good	26.969 \| good	14.996 \| good	0.495 \| good	3.848 \| good	0.225 \| good
2025-09-15T13:00:00.000Z	49 \| good	8.631 \| good	37.621 \| good	22.132 \| good	0.67 \| good	3.153 \| good	0.22 \| good
2025-09-15T14:00:00.000Z	54 \| moderate	10.535 \| good	46.562 \| good	29.49 \| good	0.844 \| good	2.459 \| good	0.215 \| good
2025-09-15T15:00:00.000Z	54 \| moderate	11.2 \| good	49.449 \| good	34.367 \| good	1.018 \| good	1.764 \| good	0.21 \| good
2025-09-15T16:00:00.000Z	52 \| moderate	10.326 \| good	45.719 \| good	36.745 \| good	0.882 \| good	1.485 \| good	0.201 \| good
2025-09-15T17:00:00.000Z	44 \| good	8.134 \| good	35.703 \| good	39.312 \| good	0.745 \| good	1.206 \| good	0.193 \| good
2025-09-15T18:00:00.000Z	38 \| good	7.499 \| good	32.72 \| good	40.826 \| good	0.608 \| good	0.927 \| good	0.185 \| good
2025-09-15T19:00:00.000Z	38 \| good	7.361 \| good	32.416 \| good	41.308 \| good	0.568 \| good	1.109 \| good	0.184 \| good
2025-09-15T20:00:00.000Z	49 \| good	8.731 \| good	38.47 \| good	42.811 \| good	0.529 \| good	1.29 \| good	0.183 \| good
2025-09-15T21:00:00.000Z	40 \| good	5.232 \| good	22.965 \| good	42.927 \| good	0.489 \| good	1.472 \| good	0.182 \| good
2025-09-15T22:00:00.000Z	35 \| good	4.474 \| good	19.385 \| good	38.354 \| good	0.56 \| good	4.904 \| good	0.218 \| good
2025-09-15T23:00:00.000Z	38 \| good	6.646 \| good	29.766 \| good	35.914 \| good	0.631 \| good	8.337 \| good	0.254 \| good
2025-09-16T00:00:00.000Z	49 \| good	9.476 \| good	42.125 \| good	28.116 \| good	0.701 \| good	11.769 \| good	0.29 \| good
2025-09-16T01:00:00.000Z	56 \| moderate	11.563 \| good	51.223 \| good	26.904 \| good	0.755 \| good	10.678 \| good	0.28 \| good
2025-09-16T02:00:00.000Z	54 \| moderate	11.378 \| good	50.429 \| good	26.717 \| good	0.808 \| good	9.586 \| good	0.27 \| good
2025-09-16T03:00:00.000Z	58 \| moderate	12.596 \| fine	56.944 \| fine	25.458 \| good	0.861 \| good	8.495 \| good	0.259 \| good
2025-09-16T04:00:00.000Z	60 \| moderate	14.078 \| fine	62.926 \| fine	25.035 \| good	0.855 \| good	8.019 \| good	0.251 \| good
2025-09-16T05:00:00.000Z	56 \| moderate	11.648 \| good	51.163 \| good	23.049 \| good	0.849 \| good	7.543 \| good	0.243 \| good
2025-09-16T06:00:00.000Z	56 \| moderate	12.207 \| fine	54.683 \| good	20.229 \| good	0.843 \| good	7.066 \| good	0.235 \| good
2025-09-16T07:00:00.000Z	54 \| moderate	11.145 \| good	49.427 \| good	18.203 \| good	0.842 \| good	7.096 \| good	0.233 \| good
2025-09-16T08:00:00.000Z	56 \| moderate	12.116 \| fine	54.329 \| good	15.454 \| good	0.84 \| good	7.126 \| good	0.232 \| good
2025-09-16T09:00:00.000Z	54 \| moderate	10.965 \| good	48.306 \| good	13.786 \| good	0.839 \| good	7.155 \| good	0.23 \| good
2025-09-16T10:00:00.000Z	54 \| moderate	11.491 \| good	50.906 \| good	12.474 \| good	0.748 \| good	8.216 \| good	0.253 \| good
2025-09-16T11:00:00.000Z	56 \| moderate	12.027 \| good	53.975 \| good	12.284 \| good	0.656 \| good	9.276 \| good	0.276 \| good
2025-09-16T12:00:00.000Z	54 \| moderate	11.036 \| good	48.865 \| good	16.441 \| good	0.564 \| good	10.337 \| good	0.299 \| good
2025-09-16T13:00:00.000Z	52 \| moderate	9.535 \| good	42.76 \| good	23.711 \| good	0.678 \| good	7.463 \| good	0.259 \| good
2025-09-16T14:00:00.000Z	49 \| good	9.124 \| good	41.105 \| good	31.637 \| good	0.792 \| good	4.59 \| good	0.219 \| good
2025-09-16T15:00:00.000Z	54 \| moderate	10.645 \| good	47.044 \| good	37.786 \| good	0.906 \| good	1.717 \| good	0.18 \| good
2025-09-16T16:00:00.000Z	56 \| moderate	12.117 \| fine	54.854 \| good	43.53 \| good	0.789 \| good	1.417 \| good	0.178 \| good
2025-09-16T17:00:00.000Z	67 \| moderate	17.812 \| fine	79.391 \| fine	45.41 \| good	0.672 \| good	1.117 \| good	0.175 \| good
2025-09-16T18:00:00.000Z	71 \| moderate	19.558 \| fine	86.519 \| fine	44.133 \| good	0.554 \| good	0.817 \| good	0.173 \| good
2025-09-16T19:00:00.000Z	67 \| moderate	17.903 \| fine	79.043 \| fine	44.668 \| good	0.534 \| good	1.051 \| good	0.174 \| good
2025-09-16T20:00:00.000Z	58 \| moderate	12.543 \| fine	57.094 \| fine	46.204 \| good	0.513 \| good	1.284 \| good	0.176 \| good
2025-09-16T21:00:00.000Z	44 \| good	8.318 \| good	36.46 \| good	43.956 \| good	0.492 \| good	1.518 \| good	0.178 \| good
2025-09-16T22:00:00.000Z	38 \| good	6.703 \| good	30.027 \| good	40.084 \| good	0.547 \| good	3.559 \| good	0.197 \| good
2025-09-16T23:00:00.000Z	33 \| good	5.356 \| good	22.99 \| good	35.832 \| good	0.603 \| good	5.6 \| good	0.217 \| good

Holyoke

Get reliable air quality data to drive your business

Holyoke, Massachusetts air quality map: Track AQI near you

0.29ppm

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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Frequently asked questions

How often is the air quality data for Holyoke, Massachusetts updated?

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

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

The worst air quality in Holyoke, Massachusetts in the last 24 hours was observed at 03:00:00 on 2025-09-14.

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

In the last 24 hrs, the best air quality in Holyoke, Massachusetts was observed at 01:00:00 on 2025-09-14.

What is the current air quality in Holyoke, Massachusetts?

The current air quality in Holyoke, Massachusetts is 49, categorized as Good based on real-time data.

What pollutant is the most common in Holyoke, Massachusetts?

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

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

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

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

The current PM_2.5 concentration at Holyoke, Massachusetts is 8.691 μg/m³.

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

The current PM₁₀ concentration at Holyoke, Massachusetts is 37.55 μg/m³.

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

The current carbon monoxide (CO) concentration at Holyoke, Massachusetts is 0.29 ppm.

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

The current sulfur dioxide (SO₂) concentration at Holyoke, Massachusetts is 0.132 ppb.

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

The current ozone (O₃) concentration at Holyoke, Massachusetts is 41.103 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Holyoke, Massachusetts is 2.022 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-13T14:00:00.000Z	33 \| good	5.994 \| good	21.172 \| good	18.829 \| good	0.179 \| good	4.985 \| good	0.265 \| good
2025-09-13T15:00:00.000Z	33 \| good	5.804 \| good	19.915 \| good	20.911 \| good	0.152 \| good	5.102 \| good	0.232 \| good
2025-09-13T16:00:00.000Z	33 \| good	5.725 \| good	15.804 \| good	27.182 \| good	0.112 \| good	3.406 \| good	0.232 \| good
2025-09-13T17:00:00.000Z	33 \| good	5.668 \| good	20.317 \| good	30.238 \| good	0.129 \| good	2.056 \| good	0.263 \| good
2025-09-13T18:00:00.000Z	44 \| good	7.559 \| good	18.662 \| good	34.937 \| good	0.159 \| good	2.017 \| good	0.279 \| good
2025-09-13T19:00:00.000Z	44 \| good	8.445 \| good	19.317 \| good	38.636 \| good	0.1 \| good	2.03 \| good	0.232 \| good
2025-09-13T20:00:00.000Z	39 \| good	6.33 \| good	23.691 \| good	41.778 \| good	0.13 \| good	3.497 \| good	0.232 \| good
2025-09-13T21:00:00.000Z	37 \| good	6.452 \| good	28.72 \| good	40.488 \| good	0.146 \| good	4.135 \| good	0.232 \| good
2025-09-13T22:00:00.000Z	38 \| good	7.135 \| good	19.634 \| good	36.755 \| good	0.228 \| good	5.239 \| good	0.232 \| good
2025-09-13T23:00:00.000Z	44 \| good	7.548 \| good	19.824 \| good	39.317 \| good	0.183 \| good	5.112 \| good	0.263 \| good
2025-09-14T00:00:00.000Z	38 \| good	6.87 \| good	24.864 \| good	36.635 \| good	0.194 \| good	4.961 \| good	0.249 \| good
2025-09-14T01:00:00.000Z	44 \| good	7.569 \| good	30.659 \| good	38.131 \| good	0.252 \| good	5.566 \| good	0.232 \| good
2025-09-14T02:00:00.000Z	38 \| good	7.491 \| good	31.333 \| good	37.121 \| good	0.228 \| good	5.405 \| good	0.232 \| good
2025-09-14T03:00:00.000Z	62 \| moderate	15.249 \| fine	68.626 \| fine	29.775 \| good	1.064 \| good	6.293 \| good	0.222 \| good
2025-09-14T04:00:00.000Z	44 \| good	8.261 \| good	28.721 \| good	33.993 \| good	0.272 \| good	6.351 \| good	0.295 \| good
2025-09-14T05:00:00.000Z	38 \| good	7.173 \| good	27.832 \| good	32.968 \| good	0.266 \| good	7.216 \| good	0.248 \| good
2025-09-14T06:00:00.000Z	28 \| good	5.317 \| good	16.936 \| good	30.422 \| good	0.504 \| good	5.813 \| good	0.217 \| good
2025-09-14T07:00:00.000Z	33 \| good	6.014 \| good	20.04 \| good	29.24 \| good	0.191 \| good	6.553 \| good	0.248 \| good
2025-09-14T08:00:00.000Z	33 \| good	6.243 \| good	19.11 \| good	24.187 \| good	0.201 \| good	9.148 \| good	0.25 \| good
2025-09-14T09:00:00.000Z	38 \| good	7.123 \| good	27.316 \| good	24.14 \| good	0.225 \| good	8.74 \| good	0.25 \| good
2025-09-14T10:00:00.000Z	38 \| good	7.381 \| good	28.327 \| good	23.206 \| good	0.226 \| good	4.754 \| good	0.217 \| good
2025-09-14T11:00:00.000Z	33 \| good	6.478 \| good	22.406 \| good	21.718 \| good	0.237 \| good	3.11 \| good	0.217 \| good
2025-09-14T12:00:00.000Z	38 \| good	7.381 \| good	25.322 \| good	24.695 \| good	0.117 \| good	5.245 \| good	0.274 \| good
2025-09-14T13:00:00.000Z	38 \| good	7.154 \| good	25.852 \| good	17.342 \| good	0.188 \| good	4.093 \| good	0.291 \| good
2025-09-14T14:00:00.000Z	33 \| good	5.623 \| good	18.088 \| good	17.995 \| good	0.122 \| good	4.106 \| good	0.291 \| good
2025-09-14T15:00:00.000Z	38 \| good	7.438 \| good	29.564 \| good	25.169 \| good	0.141 \| good	2.82 \| good	0.278 \| good
2025-09-14T16:00:00.000Z	44 \| good	7.542 \| good	23.354 \| good	30.024 \| good	0.139 \| good	2.558 \| good	0.274 \| good
2025-09-14T17:00:00.000Z	38 \| good	7.061 \| good	21.188 \| good	33.571 \| good	0.147 \| good	1.904 \| good	0.22 \| good
2025-09-14T18:00:00.000Z	44 \| good	7.585 \| good	25.553 \| good	36.843 \| good	0.142 \| good	2.422 \| good	0.262 \| good
2025-09-14T19:00:00.000Z	44 \| good	8.221 \| good	26.181 \| good	40.628 \| good	0.142 \| good	2.664 \| good	0.266 \| good
2025-09-14T20:00:00.000Z	49 \| good	8.604 \| good	31.446 \| good	41.654 \| good	0.149 \| good	2.201 \| good	0.263 \| good
2025-09-14T21:00:00.000Z	44 \| good	8.223 \| good	29.404 \| good	42.819 \| good	0.124 \| good	2.162 \| good	0.235 \| good
2025-09-14T22:00:00.000Z	44 \| good	8.028 \| good	21.347 \| good	44.476 \| good	0.151 \| good	2.094 \| good	0.283 \| good
2025-09-14T23:00:00.000Z	44 \| good	8.244 \| good	33.574 \| good	41.85 \| good	0.153 \| good	3.366 \| good	0.312 \| good
2025-09-15T00:00:00.000Z	44 \| good	8.283 \| good	28.139 \| good	36.271 \| good	0.222 \| good	4.469 \| good	0.36 \| good
2025-09-15T01:00:00.000Z	44 \| good	8.375 \| good	32.122 \| good	29.606 \| good	0.202 \| good	14.133 \| good	0.368 \| good
2025-09-15T02:00:00.000Z	38 \| good	6.871 \| good	18.068 \| good	26.206 \| good	0.262 \| good	17.676 \| good	0.398 \| good
2025-09-15T03:00:00.000Z	38 \| good	6.886 \| good	31.5 \| good	20.092 \| good	0.233 \| good	20.166 \| good	0.401 \| good
2025-09-15T04:00:00.000Z	38 \| good	7.357 \| good	23.82 \| good	21.025 \| good	0.191 \| good	15.559 \| good	0.345 \| good
2025-09-15T05:00:00.000Z	44 \| good	8.378 \| good	28.741 \| good	15.832 \| good	0.146 \| good	10.418 \| good	0.306 \| good
2025-09-15T06:00:00.000Z	44 \| good	8.1 \| good	30.511 \| good	11.356 \| good	0.18 \| good	7.658 \| good	0.288 \| good
2025-09-15T07:00:00.000Z	44 \| good	8.042 \| good	23.442 \| good	16.066 \| good	0.175 \| good	5.662 \| good	0.255 \| good
2025-09-15T08:00:00.000Z	44 \| good	8.373 \| good	29.462 \| good	13.377 \| good	0.146 \| good	4.825 \| good	0.226 \| good
2025-09-15T09:00:00.000Z	44 \| good	8.384 \| good	33.813 \| good	11.772 \| good	0.158 \| good	6.356 \| good	0.238 \| good
2025-09-15T10:00:00.000Z	44 \| good	8.075 \| good	22.004 \| good	12.403 \| good	0.18 \| good	5.439 \| good	0.262 \| good
2025-09-15T11:00:00.000Z	49 \| good	9.193 \| good	37.878 \| good	17.264 \| good	0.198 \| good	6.541 \| good	0.303 \| good
2025-09-15T12:00:00.000Z	44 \| good	8.463 \| good	35.58 \| good	12.588 \| good	0.323 \| good	5.841 \| good	0.279 \| good
2025-09-15T13:00:00.000Z	49 \| good	9.426 \| good	41.002 \| good	9.436 \| good	0.29 \| good	5.452 \| good	0.282 \| good
2025-09-15T00:00:00.000Z	38 \| good	7.392 \| good	32.789 \| good	20.923 \| good	0.587 \| good	17.313 \| good	0.328 \| good
2025-09-15T01:00:00.000Z	54 \| moderate	10.546 \| good	46.726 \| good	17.457 \| good	0.651 \| good	19.104 \| good	0.352 \| good
2025-09-15T02:00:00.000Z	60 \| moderate	13.719 \| fine	61.74 \| fine	15.159 \| good	0.714 \| good	20.895 \| good	0.376 \| good
2025-09-15T03:00:00.000Z	62 \| moderate	15.104 \| fine	67.613 \| fine	12.63 \| good	0.777 \| good	22.687 \| good	0.4 \| good
2025-09-15T04:00:00.000Z	62 \| moderate	14.745 \| fine	65.83 \| fine	13.336 \| good	0.712 \| good	19.999 \| good	0.378 \| good
2025-09-15T05:00:00.000Z	58 \| moderate	13.043 \| fine	58.176 \| fine	13.426 \| good	0.646 \| good	17.312 \| good	0.356 \| good
2025-09-15T06:00:00.000Z	54 \| moderate	10.824 \| good	47.974 \| good	12.373 \| good	0.581 \| good	14.625 \| good	0.334 \| good
2025-09-15T07:00:00.000Z	44 \| good	8.135 \| good	36.16 \| good	11.109 \| good	0.543 \| good	11.736 \| good	0.303 \| good
2025-09-15T08:00:00.000Z	33 \| good	6.407 \| good	28.534 \| good	12.443 \| good	0.505 \| good	8.848 \| good	0.273 \| good
2025-09-15T09:00:00.000Z	33 \| good	6.239 \| good	27.715 \| good	14.261 \| good	0.467 \| good	5.959 \| good	0.243 \| good
2025-09-15T10:00:00.000Z	27 \| good	5.333 \| good	23.099 \| good	11.169 \| good	0.476 \| good	5.255 \| good	0.237 \| good
2025-09-15T11:00:00.000Z	27 \| good	5.226 \| good	22.432 \| good	9.863 \| good	0.486 \| good	4.552 \| good	0.231 \| good
2025-09-15T12:00:00.000Z	33 \| good	6.009 \| good	26.969 \| good	14.996 \| good	0.495 \| good	3.848 \| good	0.225 \| good
2025-09-15T13:00:00.000Z	49 \| good	8.631 \| good	37.621 \| good	22.132 \| good	0.67 \| good	3.153 \| good	0.22 \| good
2025-09-15T14:00:00.000Z	54 \| moderate	10.535 \| good	46.562 \| good	29.49 \| good	0.844 \| good	2.459 \| good	0.215 \| good
2025-09-15T15:00:00.000Z	54 \| moderate	11.2 \| good	49.449 \| good	34.367 \| good	1.018 \| good	1.764 \| good	0.21 \| good
2025-09-15T16:00:00.000Z	52 \| moderate	10.326 \| good	45.719 \| good	36.745 \| good	0.882 \| good	1.485 \| good	0.201 \| good
2025-09-15T17:00:00.000Z	44 \| good	8.134 \| good	35.703 \| good	39.312 \| good	0.745 \| good	1.206 \| good	0.193 \| good
2025-09-15T18:00:00.000Z	38 \| good	7.499 \| good	32.72 \| good	40.826 \| good	0.608 \| good	0.927 \| good	0.185 \| good
2025-09-15T19:00:00.000Z	38 \| good	7.361 \| good	32.416 \| good	41.308 \| good	0.568 \| good	1.109 \| good	0.184 \| good
2025-09-15T20:00:00.000Z	49 \| good	8.731 \| good	38.47 \| good	42.811 \| good	0.529 \| good	1.29 \| good	0.183 \| good
2025-09-15T21:00:00.000Z	40 \| good	5.232 \| good	22.965 \| good	42.927 \| good	0.489 \| good	1.472 \| good	0.182 \| good
2025-09-15T22:00:00.000Z	35 \| good	4.474 \| good	19.385 \| good	38.354 \| good	0.56 \| good	4.904 \| good	0.218 \| good
2025-09-15T23:00:00.000Z	38 \| good	6.646 \| good	29.766 \| good	35.914 \| good	0.631 \| good	8.337 \| good	0.254 \| good
2025-09-16T00:00:00.000Z	49 \| good	9.476 \| good	42.125 \| good	28.116 \| good	0.701 \| good	11.769 \| good	0.29 \| good
2025-09-16T01:00:00.000Z	56 \| moderate	11.563 \| good	51.223 \| good	26.904 \| good	0.755 \| good	10.678 \| good	0.28 \| good
2025-09-16T02:00:00.000Z	54 \| moderate	11.378 \| good	50.429 \| good	26.717 \| good	0.808 \| good	9.586 \| good	0.27 \| good
2025-09-16T03:00:00.000Z	58 \| moderate	12.596 \| fine	56.944 \| fine	25.458 \| good	0.861 \| good	8.495 \| good	0.259 \| good
2025-09-16T04:00:00.000Z	60 \| moderate	14.078 \| fine	62.926 \| fine	25.035 \| good	0.855 \| good	8.019 \| good	0.251 \| good
2025-09-16T05:00:00.000Z	56 \| moderate	11.648 \| good	51.163 \| good	23.049 \| good	0.849 \| good	7.543 \| good	0.243 \| good
2025-09-16T06:00:00.000Z	56 \| moderate	12.207 \| fine	54.683 \| good	20.229 \| good	0.843 \| good	7.066 \| good	0.235 \| good
2025-09-16T07:00:00.000Z	54 \| moderate	11.145 \| good	49.427 \| good	18.203 \| good	0.842 \| good	7.096 \| good	0.233 \| good
2025-09-16T08:00:00.000Z	56 \| moderate	12.116 \| fine	54.329 \| good	15.454 \| good	0.84 \| good	7.126 \| good	0.232 \| good
2025-09-16T09:00:00.000Z	54 \| moderate	10.965 \| good	48.306 \| good	13.786 \| good	0.839 \| good	7.155 \| good	0.23 \| good
2025-09-16T10:00:00.000Z	54 \| moderate	11.491 \| good	50.906 \| good	12.474 \| good	0.748 \| good	8.216 \| good	0.253 \| good
2025-09-16T11:00:00.000Z	56 \| moderate	12.027 \| good	53.975 \| good	12.284 \| good	0.656 \| good	9.276 \| good	0.276 \| good
2025-09-16T12:00:00.000Z	54 \| moderate	11.036 \| good	48.865 \| good	16.441 \| good	0.564 \| good	10.337 \| good	0.299 \| good
2025-09-16T13:00:00.000Z	52 \| moderate	9.535 \| good	42.76 \| good	23.711 \| good	0.678 \| good	7.463 \| good	0.259 \| good
2025-09-16T14:00:00.000Z	49 \| good	9.124 \| good	41.105 \| good	31.637 \| good	0.792 \| good	4.59 \| good	0.219 \| good
2025-09-16T15:00:00.000Z	54 \| moderate	10.645 \| good	47.044 \| good	37.786 \| good	0.906 \| good	1.717 \| good	0.18 \| good
2025-09-16T16:00:00.000Z	56 \| moderate	12.117 \| fine	54.854 \| good	43.53 \| good	0.789 \| good	1.417 \| good	0.178 \| good
2025-09-16T17:00:00.000Z	67 \| moderate	17.812 \| fine	79.391 \| fine	45.41 \| good	0.672 \| good	1.117 \| good	0.175 \| good
2025-09-16T18:00:00.000Z	71 \| moderate	19.558 \| fine	86.519 \| fine	44.133 \| good	0.554 \| good	0.817 \| good	0.173 \| good
2025-09-16T19:00:00.000Z	67 \| moderate	17.903 \| fine	79.043 \| fine	44.668 \| good	0.534 \| good	1.051 \| good	0.174 \| good
2025-09-16T20:00:00.000Z	58 \| moderate	12.543 \| fine	57.094 \| fine	46.204 \| good	0.513 \| good	1.284 \| good	0.176 \| good
2025-09-16T21:00:00.000Z	44 \| good	8.318 \| good	36.46 \| good	43.956 \| good	0.492 \| good	1.518 \| good	0.178 \| good
2025-09-16T22:00:00.000Z	38 \| good	6.703 \| good	30.027 \| good	40.084 \| good	0.547 \| good	3.559 \| good	0.197 \| good
2025-09-16T23:00:00.000Z	33 \| good	5.356 \| good	22.99 \| good	35.832 \| good	0.603 \| good	5.6 \| good	0.217 \| good

Holyoke, Massachusetts live air quality index now

Major air pollutants in Holyoke, Massachusetts

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Holyoke, Massachusetts air quality map: Track AQI near you

Air quality in nearby cities

Chicopee, Massachusetts

South Hadley, Massachusetts

Easthampton Town, Massachusetts

West Springfield Town, Massachusetts

Springfield, Massachusetts

Ludlow, Massachusetts

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Frequently asked questions

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

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

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

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

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

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 Holyoke, Massachusetts?

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

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

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