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

Currently, Leicester, Massachusetts has a sulfur dioxide (SO2) concentration of 0.236 ppb.

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

The current ozone (O3) level in Leicester, Massachusetts at the moment is 19.039 ppm.

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

Nitrogen dioxide (NO2) level in Leicester, Massachusetts at the moment is 4.206 ppb.

Live air quality index in Leicester, Massachusetts today

Q: What is the PM2.5 level in Leicester, Massachusetts at the moment?

PM2.5 levels in Leicester, Massachusetts are currently 4.627 μg/m3.

Q: What is the PM10 level in Leicester, Massachusetts at the moment?

The PM10 concentration in Leicester, Massachusetts is 17.385 μg/m3 at the moment.

Stay updated with real-time air quality in Leicester, 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

Leicester, Massachusetts

Last updated: ... (Local time)

Major air pollutants in Leicester, Massachusetts

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.63 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.39 μg/m³

155

255

425

605+

Ozone (O₃)

19.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.24 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.21 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Leicester, Massachusetts

Get Live Pollen Counts

Leicester, Massachusetts

Scroll To Air Quality Map

Track live Leicester, Massachusetts air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-11-11T01:00:00.000Z	29 \| good	4.753 \| good	30.631 \| good	29.528 \| good	0.5 \| good	13.99 \| good	0.273 \| good
2026-11-11T02:00:00.000Z	24 \| good	4.485 \| good	21.68 \| good	26.24 \| good	0.298 \| good	13.86 \| good	0.311 \| good
2026-11-11T03:00:00.000Z	30 \| good	5.477 \| good	31.719 \| good	24.119 \| good	0.318 \| good	15.691 \| good	0.298 \| good
2026-11-11T04:00:00.000Z	33 \| good	5.638 \| good	25.162 \| good	24.788 \| good	0.287 \| good	13.586 \| good	0.298 \| good
2026-11-11T05:00:00.000Z	27 \| good	5.087 \| good	18.094 \| good	18.54 \| good	0.473 \| good	13.507 \| good	0.286 \| good
2026-11-11T06:00:00.000Z	33 \| good	6.047 \| good	13.971 \| good	20.484 \| good	0.348 \| good	11.022 \| good	0.237 \| good
2026-11-11T07:00:00.000Z	27 \| good	5.07 \| good	11.809 \| good	15.014 \| good	0.348 \| good	11.133 \| good	0.187 \| good
2026-11-11T08:00:00.000Z	22 \| good	4.258 \| good	9.214 \| good	24.079 \| good	0.342 \| good	15.531 \| good	0.199 \| good
2026-11-11T09:00:00.000Z	24 \| good	4.295 \| good	20.419 \| good	26.008 \| good	0.311 \| good	6.505 \| good	0.199 \| good
2026-11-11T10:00:00.000Z	23 \| good	3.883 \| good	9.877 \| good	24.775 \| good	0.326 \| good	4.599 \| good	0.187 \| good
2026-11-11T11:00:00.000Z	26 \| good	3.121 \| good	10.418 \| good	28.335 \| good	0.253 \| good	4.053 \| good	0.199 \| good
2026-11-11T12:00:00.000Z	25 \| good	3.491 \| good	9.344 \| good	27.243 \| good	0.206 \| good	5.64 \| good	0.274 \| good
2026-11-11T13:00:00.000Z	26 \| good	3.569 \| good	28.308 \| good	25.413 \| good	0.206 \| good	6.259 \| good	0.274 \| good
2026-11-11T14:00:00.000Z	20 \| good	3.078 \| good	11.809 \| good	22.077 \| good	0.209 \| good	3.421 \| good	0.248 \| good
2026-11-11T15:00:00.000Z	19 \| good	2.475 \| good	9.581 \| good	20.871 \| good	0.371 \| good	1.564 \| good	0.187 \| good
2026-11-11T16:00:00.000Z	22 \| good	1.683 \| good	5.957 \| good	23.951 \| good	0.228 \| good	1.347 \| good	0.187 \| good
2026-11-11T17:00:00.000Z	23 \| good	1.714 \| good	7.71 \| good	25.477 \| good	0.472 \| good	1.076 \| good	0.2 \| good
2026-11-11T18:00:00.000Z	25 \| good	1.445 \| good	6.052 \| good	26.976 \| good	0.502 \| good	1.098 \| good	0.187 \| good
2026-11-11T19:00:00.000Z	25 \| good	1.267 \| good	8.431 \| good	26.576 \| good	0.443 \| good	1.709 \| good	0.187 \| good
2026-11-11T20:00:00.000Z	28 \| good	1.584 \| good	8.988 \| good	29.722 \| good	0.413 \| good	2.084 \| good	0.2 \| good
2026-11-11T21:00:00.000Z	27 \| good	1.335 \| good	3.553 \| good	28.776 \| good	0.384 \| good	2.387 \| good	0.249 \| good
2026-11-11T22:00:00.000Z	28 \| good	1.585 \| good	6.887 \| good	29.586 \| good	0.229 \| good	3.57 \| good	0.31 \| good
2026-11-11T23:00:00.000Z	27 \| good	2.081 \| good	8.838 \| good	29.093 \| good	0.226 \| good	5.439 \| good	0.335 \| good
2026-11-12T00:00:00.000Z	23 \| good	2.381 \| good	4.571 \| good	25.202 \| good	0.188 \| good	7.362 \| good	0.409 \| good
2026-11-12T01:00:00.000Z	20 \| good	2.399 \| good	4.538 \| good	22.153 \| good	0.181 \| good	9.535 \| good	0.421 \| good
2026-11-12T02:00:00.000Z	24 \| good	3.989 \| good	20.475 \| good	25.613 \| good	0.181 \| good	12.567 \| good	0.494 \| good
2026-11-12T03:00:00.000Z	33 \| good	5.835 \| good	25.05 \| good	22.998 \| good	0.36 \| good	17.825 \| good	0.531 \| good
2026-11-12T04:00:00.000Z	33 \| good	5.809 \| good	29.223 \| good	17.76 \| good	0.288 \| good	17.889 \| good	0.519 \| good
2026-11-12T05:00:00.000Z	34 \| good	5.401 \| good	37.282 \| good	17.185 \| good	0.288 \| good	12.582 \| good	0.494 \| good
2026-11-12T06:00:00.000Z	27 \| good	4.566 \| good	19.727 \| good	13.373 \| good	0.245 \| good	10.348 \| good	0.505 \| good
2026-11-12T07:00:00.000Z	38 \| good	7.343 \| good	32.297 \| good	17.816 \| good	0.245 \| good	12.423 \| good	0.493 \| good
2026-11-12T08:00:00.000Z	58 \| moderate	8.374 \| good	68.802 \| fine	19.426 \| good	0.38 \| good	12.984 \| good	0.321 \| good
2026-11-12T09:00:00.000Z	27 \| good	4.526 \| good	10.51 \| good	9.957 \| good	0.308 \| good	9.022 \| good	0.309 \| good
2026-11-12T10:00:00.000Z	41 \| good	7.294 \| good	43.831 \| good	16.337 \| good	0.262 \| good	10.501 \| good	0.347 \| good
2026-11-12T11:00:00.000Z	33 \| good	6.452 \| good	32.365 \| good	9.24 \| good	0.274 \| good	11.677 \| good	0.359 \| good
2026-11-12T12:00:00.000Z	33 \| good	6.32 \| good	27.424 \| good	10.924 \| good	0.305 \| good	8.616 \| good	0.434 \| good
2026-11-12T13:00:00.000Z	44 \| good	7.895 \| good	44.16 \| good	9.895 \| good	0.305 \| good	8.082 \| good	0.31 \| good
2026-11-12T14:00:00.000Z	33 \| good	5.642 \| good	19.513 \| good	11.678 \| good	0.263 \| good	9.912 \| good	0.398 \| good
2026-11-12T15:00:00.000Z	27 \| good	5.478 \| good	25.194 \| good	13.61 \| good	0.394 \| good	10.062 \| good	0.495 \| good
2026-11-12T16:00:00.000Z	27 \| good	4.788 \| good	25.705 \| good	15.697 \| good	0.329 \| good	7.958 \| good	0.334 \| good
2026-11-12T17:00:00.000Z	27 \| good	4.772 \| good	22.66 \| good	19.947 \| good	0.282 \| good	11.858 \| good	0.236 \| good
2026-11-12T18:00:00.000Z	25 \| good	4.419 \| good	26.823 \| good	14.865 \| good	0.252 \| good	6.091 \| good	0.211 \| good
2026-11-12T19:00:00.000Z	22 \| good	3.778 \| good	17.042 \| good	15.153 \| good	0.228 \| good	5.625 \| good	0.272 \| good
2026-11-12T20:00:00.000Z	22 \| good	4.096 \| good	21.083 \| good	21.499 \| good	0.313 \| good	6.229 \| good	0.223 \| good
2026-11-12T21:00:00.000Z	27 \| good	4.688 \| good	10.534 \| good	16.308 \| good	0.293 \| good	5.304 \| good	0.223 \| good
2026-11-12T22:00:00.000Z	22 \| good	3.613 \| good	17.843 \| good	22.57 \| good	0.283 \| good	3.892 \| good	0.223 \| good
2026-11-12T23:00:00.000Z	22 \| good	4.483 \| good	18.466 \| good	20.318 \| good	0.293 \| good	4.535 \| good	0.21 \| good
2026-11-13T00:00:00.000Z	22 \| good	3.964 \| good	14.264 \| good	21.13 \| good	0.273 \| good	3.254 \| good	0.162 \| good
2026-11-13T00:00:00.000Z	27 \| good	4.627 \| good	17.385 \| good	19.039 \| good	0.236 \| good	4.206 \| good	0.234 \| good
2026-11-13T01:00:00.000Z	30 \| good	1.103 \| good	4.249 \| good	31.872 \| good	0.265 \| good	4.45 \| good	0.171 \| good
2026-11-13T02:00:00.000Z	27 \| good	1.196 \| good	5.053 \| good	29.023 \| good	0.254 \| good	4.13 \| good	0.167 \| good
2026-11-13T03:00:00.000Z	26 \| good	0.921 \| good	3.543 \| good	28.217 \| good	0.238 \| good	3.65 \| good	0.164 \| good
2026-11-13T04:00:00.000Z	24 \| good	0.76 \| good	2.611 \| good	26.437 \| good	0.218 \| good	3.018 \| good	0.16 \| good
2026-11-13T05:00:00.000Z	25 \| good	0.807 \| good	3.039 \| good	26.575 \| good	0.203 \| good	2.415 \| good	0.157 \| good
2026-11-13T06:00:00.000Z	24 \| good	1.167 \| good	4.832 \| good	26.084 \| good	0.194 \| good	1.91 \| good	0.155 \| good
2026-11-13T07:00:00.000Z	22 \| good	2.017 \| good	8.386 \| good	23.738 \| good	0.193 \| good	1.618 \| good	0.154 \| good
2026-11-13T08:00:00.000Z	22 \| good	2.419 \| good	9.894 \| good	24.362 \| good	0.193 \| good	1.493 \| good	0.154 \| good
2026-11-13T09:00:00.000Z	25 \| good	2.555 \| good	10.305 \| good	26.645 \| good	0.191 \| good	1.463 \| good	0.154 \| good
2026-11-13T10:00:00.000Z	25 \| good	2.663 \| good	10.989 \| good	27.4 \| good	0.183 \| good	1.51 \| good	0.153 \| good
2026-11-13T11:00:00.000Z	26 \| good	2.717 \| good	11.238 \| good	28.286 \| good	0.187 \| good	2.068 \| good	0.156 \| good
2026-11-13T12:00:00.000Z	25 \| good	2.259 \| good	9.306 \| good	27.327 \| good	0.191 \| good	2.743 \| good	0.16 \| good
2026-11-13T13:00:00.000Z	25 \| good	2.072 \| good	8.322 \| good	26.571 \| good	0.2 \| good	2.713 \| good	0.157 \| good
2026-11-13T14:00:00.000Z	26 \| good	1.432 \| good	5.777 \| good	27.818 \| good	0.215 \| good	2.856 \| good	0.156 \| good
2026-11-13T15:00:00.000Z	26 \| good	1.322 \| good	5.25 \| good	27.599 \| good	0.234 \| good	2.901 \| good	0.156 \| good
2026-11-13T16:00:00.000Z	26 \| good	1.596 \| good	6.368 \| good	28.123 \| good	0.24 \| good	2.542 \| good	0.153 \| good
2026-11-13T17:00:00.000Z	28 \| good	1.49 \| good	6.227 \| good	29.685 \| good	0.243 \| good	2.422 \| good	0.152 \| good
2026-11-13T18:00:00.000Z	28 \| good	0.714 \| good	2.588 \| good	29.883 \| good	0.243 \| good	2.322 \| good	0.152 \| good
2026-11-13T19:00:00.000Z	27 \| good	0.421 \| good	1.306 \| good	29.335 \| good	0.243 \| good	2.168 \| good	0.151 \| good
2026-11-13T20:00:00.000Z	29 \| good	0.715 \| good	2.526 \| good	30.869 \| good	0.247 \| good	2.222 \| good	0.153 \| good
2026-11-13T21:00:00.000Z	28 \| good	1.276 \| good	5.153 \| good	29.861 \| good	0.261 \| good	2.875 \| good	0.159 \| good
2026-11-13T22:00:00.000Z	30 \| good	1.873 \| good	7.514 \| good	31.625 \| good	0.286 \| good	3.483 \| good	0.164 \| good
2026-11-13T23:00:00.000Z	28 \| good	2.908 \| good	12.375 \| good	29.779 \| good	0.313 \| good	3.857 \| good	0.166 \| good
2026-11-14T00:00:00.000Z	28 \| good	3.016 \| good	12.81 \| good	30.265 \| good	0.326 \| good	3.835 \| good	0.164 \| good
2026-11-14T01:00:00.000Z	28 \| good	3.465 \| good	15.226 \| good	29.546 \| good	0.316 \| good	3.319 \| good	0.158 \| good
2026-11-14T02:00:00.000Z	26 \| good	3.451 \| good	15.308 \| good	27.551 \| good	0.295 \| good	3.039 \| good	0.155 \| good
2026-11-14T03:00:00.000Z	24 \| good	4.253 \| good	18.566 \| good	26.058 \| good	0.273 \| good	2.868 \| good	0.155 \| good
2026-11-14T04:00:00.000Z	27 \| good	5.146 \| good	22.188 \| good	24.856 \| good	0.255 \| good	2.674 \| good	0.154 \| good
2026-11-14T05:00:00.000Z	33 \| good	6.204 \| good	27.6 \| good	23.72 \| good	0.257 \| good	2.534 \| good	0.154 \| good
2026-11-14T06:00:00.000Z	33 \| good	6.468 \| good	28.949 \| good	23.828 \| good	0.279 \| good	2.496 \| good	0.154 \| good
2026-11-14T07:00:00.000Z	38 \| good	6.535 \| good	29.238 \| good	24.863 \| good	0.313 \| good	2.543 \| good	0.155 \| good
2026-11-14T08:00:00.000Z	33 \| good	6.012 \| good	27.029 \| good	24.056 \| good	0.353 \| good	2.67 \| good	0.155 \| good
2026-11-14T09:00:00.000Z	27 \| good	4.823 \| good	20.962 \| good	23.384 \| good	0.395 \| good	2.728 \| good	0.156 \| good
2026-11-14T10:00:00.000Z	27 \| good	4.621 \| good	20.112 \| good	25.028 \| good	0.431 \| good	2.877 \| good	0.157 \| good
2026-11-14T11:00:00.000Z	33 \| good	6.061 \| good	26.429 \| good	20.997 \| good	0.466 \| good	3.792 \| good	0.162 \| good
2026-11-14T12:00:00.000Z	33 \| good	5.621 \| good	24.516 \| good	18.894 \| good	0.501 \| good	5.059 \| good	0.173 \| good
2026-11-14T13:00:00.000Z	27 \| good	5.333 \| good	22.922 \| good	17.968 \| good	0.511 \| good	4.177 \| good	0.175 \| good
2026-11-14T14:00:00.000Z	22 \| good	3.791 \| good	16.765 \| good	18.546 \| good	0.527 \| good	2.125 \| good	0.158 \| good
2026-11-14T15:00:00.000Z	19 \| good	2.646 \| good	11.007 \| good	19.624 \| good	0.425 \| good	1.384 \| good	0.147 \| good
2026-11-14T16:00:00.000Z	19 \| good	2.792 \| good	11.238 \| good	21.454 \| good	0.391 \| good	1.176 \| good	0.143 \| good
2026-11-14T17:00:00.000Z	21 \| good	2.655 \| good	10.983 \| good	22.837 \| good	0.382 \| good	1.14 \| good	0.141 \| good
2026-11-14T18:00:00.000Z	22 \| good	3.467 \| good	14.983 \| good	23.994 \| good	0.375 \| good	1.17 \| good	0.141 \| good
2026-11-14T19:00:00.000Z	24 \| good	4.27 \| good	18.654 \| good	25.674 \| good	0.349 \| good	1.23 \| good	0.141 \| good
2026-11-14T20:00:00.000Z	27 \| good	4.736 \| good	20.716 \| good	25.811 \| good	0.303 \| good	1.356 \| good	0.141 \| good
2026-11-14T21:00:00.000Z	27 \| good	5.28 \| good	22.949 \| good	26.27 \| good	0.245 \| good	1.53 \| good	0.141 \| good
2026-11-14T22:00:00.000Z	27 \| good	5.383 \| good	23.369 \| good	26.877 \| good	0.206 \| good	2.341 \| good	0.147 \| good
2026-11-14T23:00:00.000Z	38 \| good	6.595 \| good	29.305 \| good	25.506 \| good	0.179 \| good	2.894 \| good	0.15 \| good
2026-11-15T00:00:00.000Z	38 \| good	6.515 \| good	29.09 \| good	23.734 \| good	0.161 \| good	3.289 \| good	0.152 \| good

Leicester

Get reliable air quality data to drive your business

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

0.27ppm

How accurate is Massachusetts, USA air quality data?

Air quality and pollutant data for Massachusetts, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

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

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

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

In the past 24 hours, the air quality in Leicester, Massachusetts was at its worst at 08:00:00 on 2026-11-12.

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

In the last 24 hours, the best air quality in Leicester, Massachusetts was observed at 01:00:00 on 2026-11-12.

What is the AQI in Leicester, Massachusetts right now?

As of now, the AQI in Leicester, Massachusetts is 27, indicating Good conditions.

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

Leicester, Massachusetts air has the highest levels of PM2.5.

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

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

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

PM_2.5 levels in Leicester, Massachusetts are currently 4.627 μg/m³.

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

The PM₁₀ concentration in Leicester, Massachusetts is 17.385 μg/m³ at the moment.

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

The current carbon monoxide (CO) concentration in Leicester, Massachusetts is 0.234 ppm.

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

Currently, Leicester, Massachusetts has a sulfur dioxide (SO₂) concentration of 0.236 ppb.

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

The current ozone (O₃) level in Leicester, Massachusetts at the moment is 19.039 ppm.

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

Nitrogen dioxide (NO₂) level in Leicester, Massachusetts at the moment is 4.206 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-11-11T01:00:00.000Z	29 \| good	4.753 \| good	30.631 \| good	29.528 \| good	0.5 \| good	13.99 \| good	0.273 \| good
2026-11-11T02:00:00.000Z	24 \| good	4.485 \| good	21.68 \| good	26.24 \| good	0.298 \| good	13.86 \| good	0.311 \| good
2026-11-11T03:00:00.000Z	30 \| good	5.477 \| good	31.719 \| good	24.119 \| good	0.318 \| good	15.691 \| good	0.298 \| good
2026-11-11T04:00:00.000Z	33 \| good	5.638 \| good	25.162 \| good	24.788 \| good	0.287 \| good	13.586 \| good	0.298 \| good
2026-11-11T05:00:00.000Z	27 \| good	5.087 \| good	18.094 \| good	18.54 \| good	0.473 \| good	13.507 \| good	0.286 \| good
2026-11-11T06:00:00.000Z	33 \| good	6.047 \| good	13.971 \| good	20.484 \| good	0.348 \| good	11.022 \| good	0.237 \| good
2026-11-11T07:00:00.000Z	27 \| good	5.07 \| good	11.809 \| good	15.014 \| good	0.348 \| good	11.133 \| good	0.187 \| good
2026-11-11T08:00:00.000Z	22 \| good	4.258 \| good	9.214 \| good	24.079 \| good	0.342 \| good	15.531 \| good	0.199 \| good
2026-11-11T09:00:00.000Z	24 \| good	4.295 \| good	20.419 \| good	26.008 \| good	0.311 \| good	6.505 \| good	0.199 \| good
2026-11-11T10:00:00.000Z	23 \| good	3.883 \| good	9.877 \| good	24.775 \| good	0.326 \| good	4.599 \| good	0.187 \| good
2026-11-11T11:00:00.000Z	26 \| good	3.121 \| good	10.418 \| good	28.335 \| good	0.253 \| good	4.053 \| good	0.199 \| good
2026-11-11T12:00:00.000Z	25 \| good	3.491 \| good	9.344 \| good	27.243 \| good	0.206 \| good	5.64 \| good	0.274 \| good
2026-11-11T13:00:00.000Z	26 \| good	3.569 \| good	28.308 \| good	25.413 \| good	0.206 \| good	6.259 \| good	0.274 \| good
2026-11-11T14:00:00.000Z	20 \| good	3.078 \| good	11.809 \| good	22.077 \| good	0.209 \| good	3.421 \| good	0.248 \| good
2026-11-11T15:00:00.000Z	19 \| good	2.475 \| good	9.581 \| good	20.871 \| good	0.371 \| good	1.564 \| good	0.187 \| good
2026-11-11T16:00:00.000Z	22 \| good	1.683 \| good	5.957 \| good	23.951 \| good	0.228 \| good	1.347 \| good	0.187 \| good
2026-11-11T17:00:00.000Z	23 \| good	1.714 \| good	7.71 \| good	25.477 \| good	0.472 \| good	1.076 \| good	0.2 \| good
2026-11-11T18:00:00.000Z	25 \| good	1.445 \| good	6.052 \| good	26.976 \| good	0.502 \| good	1.098 \| good	0.187 \| good
2026-11-11T19:00:00.000Z	25 \| good	1.267 \| good	8.431 \| good	26.576 \| good	0.443 \| good	1.709 \| good	0.187 \| good
2026-11-11T20:00:00.000Z	28 \| good	1.584 \| good	8.988 \| good	29.722 \| good	0.413 \| good	2.084 \| good	0.2 \| good
2026-11-11T21:00:00.000Z	27 \| good	1.335 \| good	3.553 \| good	28.776 \| good	0.384 \| good	2.387 \| good	0.249 \| good
2026-11-11T22:00:00.000Z	28 \| good	1.585 \| good	6.887 \| good	29.586 \| good	0.229 \| good	3.57 \| good	0.31 \| good
2026-11-11T23:00:00.000Z	27 \| good	2.081 \| good	8.838 \| good	29.093 \| good	0.226 \| good	5.439 \| good	0.335 \| good
2026-11-12T00:00:00.000Z	23 \| good	2.381 \| good	4.571 \| good	25.202 \| good	0.188 \| good	7.362 \| good	0.409 \| good
2026-11-12T01:00:00.000Z	20 \| good	2.399 \| good	4.538 \| good	22.153 \| good	0.181 \| good	9.535 \| good	0.421 \| good
2026-11-12T02:00:00.000Z	24 \| good	3.989 \| good	20.475 \| good	25.613 \| good	0.181 \| good	12.567 \| good	0.494 \| good
2026-11-12T03:00:00.000Z	33 \| good	5.835 \| good	25.05 \| good	22.998 \| good	0.36 \| good	17.825 \| good	0.531 \| good
2026-11-12T04:00:00.000Z	33 \| good	5.809 \| good	29.223 \| good	17.76 \| good	0.288 \| good	17.889 \| good	0.519 \| good
2026-11-12T05:00:00.000Z	34 \| good	5.401 \| good	37.282 \| good	17.185 \| good	0.288 \| good	12.582 \| good	0.494 \| good
2026-11-12T06:00:00.000Z	27 \| good	4.566 \| good	19.727 \| good	13.373 \| good	0.245 \| good	10.348 \| good	0.505 \| good
2026-11-12T07:00:00.000Z	38 \| good	7.343 \| good	32.297 \| good	17.816 \| good	0.245 \| good	12.423 \| good	0.493 \| good
2026-11-12T08:00:00.000Z	58 \| moderate	8.374 \| good	68.802 \| fine	19.426 \| good	0.38 \| good	12.984 \| good	0.321 \| good
2026-11-12T09:00:00.000Z	27 \| good	4.526 \| good	10.51 \| good	9.957 \| good	0.308 \| good	9.022 \| good	0.309 \| good
2026-11-12T10:00:00.000Z	41 \| good	7.294 \| good	43.831 \| good	16.337 \| good	0.262 \| good	10.501 \| good	0.347 \| good
2026-11-12T11:00:00.000Z	33 \| good	6.452 \| good	32.365 \| good	9.24 \| good	0.274 \| good	11.677 \| good	0.359 \| good
2026-11-12T12:00:00.000Z	33 \| good	6.32 \| good	27.424 \| good	10.924 \| good	0.305 \| good	8.616 \| good	0.434 \| good
2026-11-12T13:00:00.000Z	44 \| good	7.895 \| good	44.16 \| good	9.895 \| good	0.305 \| good	8.082 \| good	0.31 \| good
2026-11-12T14:00:00.000Z	33 \| good	5.642 \| good	19.513 \| good	11.678 \| good	0.263 \| good	9.912 \| good	0.398 \| good
2026-11-12T15:00:00.000Z	27 \| good	5.478 \| good	25.194 \| good	13.61 \| good	0.394 \| good	10.062 \| good	0.495 \| good
2026-11-12T16:00:00.000Z	27 \| good	4.788 \| good	25.705 \| good	15.697 \| good	0.329 \| good	7.958 \| good	0.334 \| good
2026-11-12T17:00:00.000Z	27 \| good	4.772 \| good	22.66 \| good	19.947 \| good	0.282 \| good	11.858 \| good	0.236 \| good
2026-11-12T18:00:00.000Z	25 \| good	4.419 \| good	26.823 \| good	14.865 \| good	0.252 \| good	6.091 \| good	0.211 \| good
2026-11-12T19:00:00.000Z	22 \| good	3.778 \| good	17.042 \| good	15.153 \| good	0.228 \| good	5.625 \| good	0.272 \| good
2026-11-12T20:00:00.000Z	22 \| good	4.096 \| good	21.083 \| good	21.499 \| good	0.313 \| good	6.229 \| good	0.223 \| good
2026-11-12T21:00:00.000Z	27 \| good	4.688 \| good	10.534 \| good	16.308 \| good	0.293 \| good	5.304 \| good	0.223 \| good
2026-11-12T22:00:00.000Z	22 \| good	3.613 \| good	17.843 \| good	22.57 \| good	0.283 \| good	3.892 \| good	0.223 \| good
2026-11-12T23:00:00.000Z	22 \| good	4.483 \| good	18.466 \| good	20.318 \| good	0.293 \| good	4.535 \| good	0.21 \| good
2026-11-13T00:00:00.000Z	22 \| good	3.964 \| good	14.264 \| good	21.13 \| good	0.273 \| good	3.254 \| good	0.162 \| good
2026-11-13T00:00:00.000Z	27 \| good	4.627 \| good	17.385 \| good	19.039 \| good	0.236 \| good	4.206 \| good	0.234 \| good
2026-11-13T01:00:00.000Z	30 \| good	1.103 \| good	4.249 \| good	31.872 \| good	0.265 \| good	4.45 \| good	0.171 \| good
2026-11-13T02:00:00.000Z	27 \| good	1.196 \| good	5.053 \| good	29.023 \| good	0.254 \| good	4.13 \| good	0.167 \| good
2026-11-13T03:00:00.000Z	26 \| good	0.921 \| good	3.543 \| good	28.217 \| good	0.238 \| good	3.65 \| good	0.164 \| good
2026-11-13T04:00:00.000Z	24 \| good	0.76 \| good	2.611 \| good	26.437 \| good	0.218 \| good	3.018 \| good	0.16 \| good
2026-11-13T05:00:00.000Z	25 \| good	0.807 \| good	3.039 \| good	26.575 \| good	0.203 \| good	2.415 \| good	0.157 \| good
2026-11-13T06:00:00.000Z	24 \| good	1.167 \| good	4.832 \| good	26.084 \| good	0.194 \| good	1.91 \| good	0.155 \| good
2026-11-13T07:00:00.000Z	22 \| good	2.017 \| good	8.386 \| good	23.738 \| good	0.193 \| good	1.618 \| good	0.154 \| good
2026-11-13T08:00:00.000Z	22 \| good	2.419 \| good	9.894 \| good	24.362 \| good	0.193 \| good	1.493 \| good	0.154 \| good
2026-11-13T09:00:00.000Z	25 \| good	2.555 \| good	10.305 \| good	26.645 \| good	0.191 \| good	1.463 \| good	0.154 \| good
2026-11-13T10:00:00.000Z	25 \| good	2.663 \| good	10.989 \| good	27.4 \| good	0.183 \| good	1.51 \| good	0.153 \| good
2026-11-13T11:00:00.000Z	26 \| good	2.717 \| good	11.238 \| good	28.286 \| good	0.187 \| good	2.068 \| good	0.156 \| good
2026-11-13T12:00:00.000Z	25 \| good	2.259 \| good	9.306 \| good	27.327 \| good	0.191 \| good	2.743 \| good	0.16 \| good
2026-11-13T13:00:00.000Z	25 \| good	2.072 \| good	8.322 \| good	26.571 \| good	0.2 \| good	2.713 \| good	0.157 \| good
2026-11-13T14:00:00.000Z	26 \| good	1.432 \| good	5.777 \| good	27.818 \| good	0.215 \| good	2.856 \| good	0.156 \| good
2026-11-13T15:00:00.000Z	26 \| good	1.322 \| good	5.25 \| good	27.599 \| good	0.234 \| good	2.901 \| good	0.156 \| good
2026-11-13T16:00:00.000Z	26 \| good	1.596 \| good	6.368 \| good	28.123 \| good	0.24 \| good	2.542 \| good	0.153 \| good
2026-11-13T17:00:00.000Z	28 \| good	1.49 \| good	6.227 \| good	29.685 \| good	0.243 \| good	2.422 \| good	0.152 \| good
2026-11-13T18:00:00.000Z	28 \| good	0.714 \| good	2.588 \| good	29.883 \| good	0.243 \| good	2.322 \| good	0.152 \| good
2026-11-13T19:00:00.000Z	27 \| good	0.421 \| good	1.306 \| good	29.335 \| good	0.243 \| good	2.168 \| good	0.151 \| good
2026-11-13T20:00:00.000Z	29 \| good	0.715 \| good	2.526 \| good	30.869 \| good	0.247 \| good	2.222 \| good	0.153 \| good
2026-11-13T21:00:00.000Z	28 \| good	1.276 \| good	5.153 \| good	29.861 \| good	0.261 \| good	2.875 \| good	0.159 \| good
2026-11-13T22:00:00.000Z	30 \| good	1.873 \| good	7.514 \| good	31.625 \| good	0.286 \| good	3.483 \| good	0.164 \| good
2026-11-13T23:00:00.000Z	28 \| good	2.908 \| good	12.375 \| good	29.779 \| good	0.313 \| good	3.857 \| good	0.166 \| good
2026-11-14T00:00:00.000Z	28 \| good	3.016 \| good	12.81 \| good	30.265 \| good	0.326 \| good	3.835 \| good	0.164 \| good
2026-11-14T01:00:00.000Z	28 \| good	3.465 \| good	15.226 \| good	29.546 \| good	0.316 \| good	3.319 \| good	0.158 \| good
2026-11-14T02:00:00.000Z	26 \| good	3.451 \| good	15.308 \| good	27.551 \| good	0.295 \| good	3.039 \| good	0.155 \| good
2026-11-14T03:00:00.000Z	24 \| good	4.253 \| good	18.566 \| good	26.058 \| good	0.273 \| good	2.868 \| good	0.155 \| good
2026-11-14T04:00:00.000Z	27 \| good	5.146 \| good	22.188 \| good	24.856 \| good	0.255 \| good	2.674 \| good	0.154 \| good
2026-11-14T05:00:00.000Z	33 \| good	6.204 \| good	27.6 \| good	23.72 \| good	0.257 \| good	2.534 \| good	0.154 \| good
2026-11-14T06:00:00.000Z	33 \| good	6.468 \| good	28.949 \| good	23.828 \| good	0.279 \| good	2.496 \| good	0.154 \| good
2026-11-14T07:00:00.000Z	38 \| good	6.535 \| good	29.238 \| good	24.863 \| good	0.313 \| good	2.543 \| good	0.155 \| good
2026-11-14T08:00:00.000Z	33 \| good	6.012 \| good	27.029 \| good	24.056 \| good	0.353 \| good	2.67 \| good	0.155 \| good
2026-11-14T09:00:00.000Z	27 \| good	4.823 \| good	20.962 \| good	23.384 \| good	0.395 \| good	2.728 \| good	0.156 \| good
2026-11-14T10:00:00.000Z	27 \| good	4.621 \| good	20.112 \| good	25.028 \| good	0.431 \| good	2.877 \| good	0.157 \| good
2026-11-14T11:00:00.000Z	33 \| good	6.061 \| good	26.429 \| good	20.997 \| good	0.466 \| good	3.792 \| good	0.162 \| good
2026-11-14T12:00:00.000Z	33 \| good	5.621 \| good	24.516 \| good	18.894 \| good	0.501 \| good	5.059 \| good	0.173 \| good
2026-11-14T13:00:00.000Z	27 \| good	5.333 \| good	22.922 \| good	17.968 \| good	0.511 \| good	4.177 \| good	0.175 \| good
2026-11-14T14:00:00.000Z	22 \| good	3.791 \| good	16.765 \| good	18.546 \| good	0.527 \| good	2.125 \| good	0.158 \| good
2026-11-14T15:00:00.000Z	19 \| good	2.646 \| good	11.007 \| good	19.624 \| good	0.425 \| good	1.384 \| good	0.147 \| good
2026-11-14T16:00:00.000Z	19 \| good	2.792 \| good	11.238 \| good	21.454 \| good	0.391 \| good	1.176 \| good	0.143 \| good
2026-11-14T17:00:00.000Z	21 \| good	2.655 \| good	10.983 \| good	22.837 \| good	0.382 \| good	1.14 \| good	0.141 \| good
2026-11-14T18:00:00.000Z	22 \| good	3.467 \| good	14.983 \| good	23.994 \| good	0.375 \| good	1.17 \| good	0.141 \| good
2026-11-14T19:00:00.000Z	24 \| good	4.27 \| good	18.654 \| good	25.674 \| good	0.349 \| good	1.23 \| good	0.141 \| good
2026-11-14T20:00:00.000Z	27 \| good	4.736 \| good	20.716 \| good	25.811 \| good	0.303 \| good	1.356 \| good	0.141 \| good
2026-11-14T21:00:00.000Z	27 \| good	5.28 \| good	22.949 \| good	26.27 \| good	0.245 \| good	1.53 \| good	0.141 \| good
2026-11-14T22:00:00.000Z	27 \| good	5.383 \| good	23.369 \| good	26.877 \| good	0.206 \| good	2.341 \| good	0.147 \| good
2026-11-14T23:00:00.000Z	38 \| good	6.595 \| good	29.305 \| good	25.506 \| good	0.179 \| good	2.894 \| good	0.15 \| good
2026-11-15T00:00:00.000Z	38 \| good	6.515 \| good	29.09 \| good	23.734 \| good	0.161 \| good	3.289 \| good	0.152 \| good

Live air quality index in Leicester, Massachusetts today

Major air pollutants in Leicester, Massachusetts

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Leicester, Massachusetts air quality forecast and history

Get reliable air quality data to drive your business

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

Air quality in nearby cities

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Auburn, Massachusetts

Worcester, Massachusetts

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Frequently asked questions

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What is the PM2.5 level in Leicester, Massachusetts at the moment?

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

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

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

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

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

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