What are the current PM10 levels at Guilford, Connecticut?

The current PM10 levels in Guilford, Connecticut are 28.804 μg/m3.

What are the current sulfur dioxide (SO2) levels at Guilford, Connecticut?

The current sulfur dioxide (SO2) levels in Guilford, Connecticut are 0.445 ppb.

What are the current ozone (O3) levels at Guilford, Connecticut?

The current ozone (O3) levels at Guilford, Connecticut is 26.301 ppm.

What are the current nitrogen dioxide (NO2) levels at Guilford, Connecticut?

The current nitrogen dioxide (NO2) levels at Guilford, Connecticut is 4.546 ppb.

Live air quality index in Guilford, Connecticut today

Name: Live air pollution levels in Guilford, Connecticut today
Creator: Ambee

Stay updated with real-time air quality in Guilford, Connecticut 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)

Moderate

Guilford, Connecticut

Last updated: ... (Local time)

Major air pollutants in Guilford, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

10.23 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

28.80 μg/m³

155

255

425

605+

Ozone (O₃)

26.30 ppb

201

201+

Sulfur Dioxide (SO₂)

0.45 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.55 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Guilford, Connecticut

Get Live Pollen Counts

Guilford, Connecticut

Scroll To Air Quality Map

Track live Guilford, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T12:00:00.000Z	58 \| moderate	12.871 \| fine	42.563 \| good	18.364 \| good	0.42 \| good	22.884 \| good	0.354 \| good
2025-06-05T13:00:00.000Z	58 \| moderate	13.208 \| fine	48.831 \| good	23.888 \| good	0.405 \| good	24.522 \| good	0.416 \| good
2025-06-05T14:00:00.000Z	60 \| moderate	14.338 \| fine	50.839 \| good	29.649 \| good	0.509 \| good	27.181 \| good	0.329 \| good
2025-06-05T15:00:00.000Z	64 \| moderate	16.135 \| fine	69.016 \| fine	50.054 \| good	1.111 \| good	32.222 \| good	0.349 \| good
2025-06-05T16:00:00.000Z	64 \| moderate	15.506 \| fine	78.736 \| fine	39.9 \| good	1.192 \| good	46.02 \| good	0.349 \| good
2025-06-05T17:00:00.000Z	69 \| moderate	19.327 \| fine	78.806 \| fine	54.077 \| good	0.977 \| good	42.465 \| good	0.335 \| good
2025-06-05T18:00:00.000Z	69 \| moderate	19.224 \| fine	46.188 \| good	55.604 \| fine	0.793 \| good	31.074 \| good	0.328 \| good
2025-06-05T19:00:00.000Z	87 \| moderate	13.842 \| fine	63.213 \| fine	66.094 \| fine	0.914 \| good	48.881 \| good	0.328 \| good
2025-06-05T20:00:00.000Z	119 \| sensitive	16.43 \| fine	69.839 \| fine	76.324 \| moderate	0.809 \| good	35.522 \| good	0.382 \| good
2025-06-05T21:00:00.000Z	75 \| moderate	21.967 \| fine	69.038 \| fine	56.399 \| fine	0.61 \| good	18.627 \| good	0.363 \| good
2025-06-05T22:00:00.000Z	105 \| sensitive	23.015 \| fine	70.482 \| fine	71.553 \| moderate	0.482 \| good	24.429 \| good	0.375 \| good
2025-06-05T23:00:00.000Z	90 \| moderate	24.485 \| fine	59.798 \| fine	66.584 \| fine	0.485 \| good	33.328 \| good	0.332 \| good
2025-06-06T00:00:00.000Z	100 \| moderate	21.017 \| fine	68.978 \| fine	69.532 \| fine	0.462 \| good	31.265 \| good	0.339 \| good
2025-06-06T01:00:00.000Z	71 \| moderate	18.895 \| fine	73.124 \| fine	60.58 \| fine	0.473 \| good	16.39 \| good	0.285 \| good
2025-06-06T02:00:00.000Z	71 \| moderate	19.915 \| fine	87.959 \| fine	60.716 \| fine	0.762 \| good	14.583 \| good	0.265 \| good
2025-06-06T03:00:00.000Z	87 \| moderate	17.331 \| fine	82.096 \| fine	65.664 \| fine	0.609 \| good	20.673 \| good	0.272 \| good
2025-06-06T04:00:00.000Z	64 \| moderate	16.043 \| fine	58.556 \| fine	40.194 \| good	0.39 \| good	17.744 \| good	0.217 \| good
2025-06-06T05:00:00.000Z	62 \| moderate	14.64 \| fine	35.814 \| good	55.372 \| fine	0.311 \| good	18.113 \| good	0.197 \| good
2025-06-06T06:00:00.000Z	62 \| moderate	14.683 \| fine	38.011 \| good	43.126 \| good	0.362 \| good	23.392 \| good	0.166 \| good
2025-06-06T07:00:00.000Z	64 \| moderate	16.369 \| fine	41.216 \| good	42.029 \| good	0.307 \| good	18.718 \| good	0.159 \| good
2025-06-06T08:00:00.000Z	67 \| moderate	17.722 \| fine	65.041 \| fine	33.863 \| good	0.282 \| good	15.644 \| good	0.171 \| good
2025-06-06T09:00:00.000Z	62 \| moderate	14.792 \| fine	37.233 \| good	29.005 \| good	0.584 \| good	8.974 \| good	0.152 \| good
2025-06-06T10:00:00.000Z	62 \| moderate	14.649 \| fine	57.295 \| fine	22.903 \| good	0.55 \| good	25.368 \| good	0.152 \| good
2025-06-06T11:00:00.000Z	66 \| moderate	16.913 \| fine	36.22 \| good	28.357 \| good	0.247 \| good	24.566 \| good	0.234 \| good
2025-06-06T12:00:00.000Z	66 \| moderate	17.293 \| fine	40.098 \| good	30.556 \| good	0.547 \| good	15.257 \| good	0.318 \| good
2025-06-06T13:00:00.000Z	64 \| moderate	15.586 \| fine	47.407 \| good	30.463 \| good	0.328 \| good	18.9 \| good	0.276 \| good
2025-06-06T14:00:00.000Z	62 \| moderate	15.051 \| fine	58.573 \| fine	30.004 \| good	0.248 \| good	15.382 \| good	0.241 \| good
2025-06-06T15:00:00.000Z	69 \| moderate	19.171 \| fine	89.929 \| fine	35.17 \| good	0.253 \| good	11.63 \| good	0.288 \| good
2025-06-06T16:00:00.000Z	73 \| moderate	20.838 \| fine	93.701 \| fine	42.562 \| good	0.251 \| good	6.934 \| good	0.295 \| good
2025-06-06T17:00:00.000Z	71 \| moderate	20.454 \| fine	91.44 \| fine	41.917 \| good	0.232 \| good	8.979 \| good	0.315 \| good
2025-06-06T18:00:00.000Z	73 \| moderate	20.595 \| fine	58.65 \| fine	57.06 \| fine	0.347 \| good	11.286 \| good	0.315 \| good
2025-06-06T19:00:00.000Z	77 \| moderate	22.132 \| fine	41.997 \| good	62.65 \| fine	0.344 \| good	8.492 \| good	0.322 \| good
2025-06-06T20:00:00.000Z	93 \| moderate	18.365 \| fine	32.658 \| good	68.407 \| fine	0.275 \| good	9.682 \| good	0.295 \| good
2025-06-06T21:00:00.000Z	90 \| moderate	18.574 \| fine	70.428 \| fine	67.246 \| fine	0.295 \| good	12.169 \| good	0.315 \| good
2025-06-06T22:00:00.000Z	71 \| moderate	19.891 \| fine	60.173 \| fine	57.81 \| fine	0.321 \| good	11.224 \| good	0.26 \| good
2025-06-06T23:00:00.000Z	71 \| moderate	16.844 \| fine	34.17 \| good	61.446 \| fine	0.37 \| good	21.442 \| good	0.26 \| good
2025-06-07T00:00:00.000Z	60 \| moderate	13.94 \| fine	32.286 \| good	45.629 \| good	0.222 \| good	21.297 \| good	0.228 \| good
2025-06-07T01:00:00.000Z	58 \| moderate	12.539 \| fine	33.369 \| good	47.359 \| good	0.238 \| good	9.291 \| good	0.147 \| good
2025-06-07T02:00:00.000Z	56 \| moderate	12.488 \| fine	34.106 \| good	38.126 \| good	0.555 \| good	9.849 \| good	0.166 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	11.55 \| good	29.797 \| good	33.053 \| good	0.591 \| good	4.503 \| good	0.166 \| good
2025-06-07T04:00:00.000Z	56 \| moderate	11.837 \| good	33.769 \| good	37.796 \| good	0.545 \| good	5.267 \| good	0.152 \| good
2025-06-07T05:00:00.000Z	54 \| moderate	11.081 \| good	18.771 \| good	28.815 \| good	0.95 \| good	4.558 \| good	0.291 \| good
2025-06-07T06:00:00.000Z	54 \| moderate	10.737 \| good	17.06 \| good	30.642 \| good	0.917 \| good	3.778 \| good	0.278 \| good
2025-06-07T07:00:00.000Z	44 \| good	7.619 \| good	28.629 \| good	28.881 \| good	0.496 \| good	7.248 \| good	0.278 \| good
2025-06-07T08:00:00.000Z	49 \| good	9.368 \| good	27.187 \| good	17.608 \| good	0.511 \| good	6.524 \| good	0.316 \| good
2025-06-07T09:00:00.000Z	49 \| good	9.43 \| good	24.029 \| good	16.413 \| good	0.494 \| good	14.116 \| good	0.203 \| good
2025-06-07T10:00:00.000Z	52 \| moderate	10.312 \| good	22.163 \| good	16.25 \| good	0.503 \| good	11.298 \| good	0.167 \| good
2025-06-07T11:00:00.000Z	52 \| moderate	10.226 \| good	28.804 \| good	26.301 \| good	0.445 \| good	4.546 \| good	0.227 \| good
2025-06-07T11:00:00.000Z	52 \| moderate	10.226 \| good	28.804 \| good	26.301 \| good	0.445 \| good	4.546 \| good	0.227 \| good
2025-06-07T12:00:00.000Z	52 \| moderate	10.257 \| good	45.363 \| good	29.076 \| good	0.211 \| good	3.708 \| good	0.158 \| good
2025-06-07T13:00:00.000Z	54 \| moderate	10.719 \| good	47.622 \| good	30.174 \| good	0.601 \| good	5.146 \| good	0.16 \| good
2025-06-07T14:00:00.000Z	56 \| moderate	11.725 \| good	52.414 \| good	28.493 \| good	0.45 \| good	5.121 \| good	0.168 \| good
2025-06-07T15:00:00.000Z	56 \| moderate	12.17 \| fine	54.545 \| good	26.767 \| good	0.3 \| good	5.096 \| good	0.175 \| good
2025-06-07T16:00:00.000Z	56 \| moderate	12.458 \| fine	55.641 \| fine	30.828 \| good	0.859 \| good	4.643 \| good	0.183 \| good
2025-06-07T17:00:00.000Z	58 \| moderate	13.265 \| fine	59.843 \| fine	40.528 \| good	0.73 \| good	5.133 \| good	0.192 \| good
2025-06-07T18:00:00.000Z	54 \| moderate	11.257 \| good	49.635 \| good	44.044 \| good	0.601 \| good	5.623 \| good	0.201 \| good
2025-06-07T19:00:00.000Z	54 \| moderate	10.58 \| good	47.044 \| good	48.836 \| good	0.645 \| good	4.17 \| good	0.201 \| good
2025-06-07T20:00:00.000Z	56 \| moderate	12.488 \| fine	56.209 \| fine	52.808 \| good	0.64 \| good	4.905 \| good	0.207 \| good
2025-06-07T21:00:00.000Z	54 \| moderate	11.172 \| good	49.739 \| good	52.284 \| good	0.635 \| good	5.641 \| good	0.213 \| good
2025-06-07T22:00:00.000Z	49 \| good	9.31 \| good	41.238 \| good	47.58 \| good	0.549 \| good	5.758 \| good	0.221 \| good
2025-06-07T23:00:00.000Z	56 \| moderate	12.057 \| good	54.171 \| good	44.745 \| good	0.544 \| good	6.287 \| good	0.219 \| good
2025-06-08T00:00:00.000Z	38 \| good	6.545 \| good	29.306 \| good	41.171 \| good	0.539 \| good	6.817 \| good	0.217 \| good
2025-06-08T01:00:00.000Z	38 \| good	6.907 \| good	30.731 \| good	37.941 \| good	0.543 \| good	7.368 \| good	0.256 \| good
2025-06-08T02:00:00.000Z	44 \| good	8.429 \| good	36.82 \| good	35.032 \| good	0.545 \| good	7.615 \| good	0.253 \| good
2025-06-08T03:00:00.000Z	52 \| moderate	10.337 \| good	45.9 \| good	32.42 \| good	0.547 \| good	7.861 \| good	0.25 \| good
2025-06-08T04:00:00.000Z	54 \| moderate	10.984 \| good	48.598 \| good	29.831 \| good	0.54 \| good	4.648 \| good	0.265 \| good
2025-06-08T05:00:00.000Z	56 \| moderate	12.167 \| fine	54.925 \| good	25.373 \| good	0.543 \| good	4.838 \| good	0.263 \| good
2025-06-08T06:00:00.000Z	56 \| moderate	12.315 \| fine	55.609 \| fine	19.927 \| good	0.546 \| good	5.027 \| good	0.262 \| good
2025-06-08T07:00:00.000Z	54 \| moderate	11.237 \| good	49.448 \| good	16.722 \| good	0.506 \| good	2.618 \| good	0.268 \| good
2025-06-08T08:00:00.000Z	52 \| moderate	9.891 \| good	43.921 \| good	15.051 \| good	0.485 \| good	2.676 \| good	0.259 \| good
2025-06-08T09:00:00.000Z	52 \| moderate	10.393 \| good	46.018 \| good	11.921 \| good	0.463 \| good	2.734 \| good	0.251 \| good
2025-06-08T10:00:00.000Z	60 \| moderate	13.509 \| fine	61.024 \| fine	15.271 \| good	0.418 \| good	3.042 \| good	0.247 \| good
2025-06-08T11:00:00.000Z	62 \| moderate	14.9 \| fine	66.479 \| fine	19.431 \| good	0.409 \| good	3.242 \| good	0.233 \| good
2025-06-08T12:00:00.000Z	67 \| moderate	18.336 \| fine	80.894 \| fine	21.602 \| good	0.4 \| good	3.442 \| good	0.22 \| good
2025-06-08T13:00:00.000Z	67 \| moderate	18.24 \| fine	80.371 \| fine	22.944 \| good	0.321 \| good	2.649 \| good	0.208 \| good
2025-06-08T14:00:00.000Z	64 \| moderate	15.79 \| fine	70.625 \| fine	22.058 \| good	0.311 \| good	2.682 \| good	0.202 \| good
2025-06-08T15:00:00.000Z	60 \| moderate	14.213 \| fine	63.74 \| fine	28.204 \| good	0.301 \| good	2.715 \| good	0.195 \| good
2025-06-08T16:00:00.000Z	66 \| moderate	16.956 \| fine	75.157 \| fine	36.644 \| good	0.279 \| good	1.946 \| good	0.207 \| good
2025-06-08T17:00:00.000Z	67 \| moderate	18.134 \| fine	80.004 \| fine	44.801 \| good	0.27 \| good	2.01 \| good	0.205 \| good
2025-06-08T18:00:00.000Z	62 \| moderate	14.623 \| fine	65.403 \| fine	45.937 \| good	0.261 \| good	2.074 \| good	0.204 \| good
2025-06-08T19:00:00.000Z	58 \| moderate	13.062 \| fine	59.043 \| fine	45.636 \| good	0.306 \| good	2.158 \| good	0.206 \| good
2025-06-08T20:00:00.000Z	60 \| moderate	14.125 \| fine	63.359 \| fine	47.514 \| good	0.279 \| good	2.267 \| good	0.204 \| good
2025-06-08T21:00:00.000Z	58 \| moderate	12.689 \| fine	57.638 \| fine	47.904 \| good	0.253 \| good	2.376 \| good	0.202 \| good
2025-06-08T22:00:00.000Z	56 \| moderate	12.007 \| good	53.556 \| good	44.613 \| good	0.395 \| good	5.731 \| good	0.239 \| good
2025-06-08T23:00:00.000Z	56 \| moderate	11.7 \| good	52.281 \| good	45.881 \| good	0.352 \| good	5.889 \| good	0.239 \| good
2025-06-09T00:00:00.000Z	49 \| good	9.484 \| good	42.323 \| good	43.742 \| good	0.309 \| good	6.047 \| good	0.239 \| good
2025-06-09T01:00:00.000Z	52 \| moderate	9.997 \| good	44.447 \| good	44.36 \| good	0.547 \| good	7.717 \| good	0.258 \| good
2025-06-09T02:00:00.000Z	52 \| moderate	9.79 \| good	43.529 \| good	45.804 \| good	0.49 \| good	7.919 \| good	0.264 \| good
2025-06-09T03:00:00.000Z	52 \| moderate	9.709 \| good	43.031 \| good	47.711 \| good	0.432 \| good	8.121 \| good	0.27 \| good
2025-06-09T04:00:00.000Z	52 \| moderate	9.528 \| good	42.663 \| good	46.268 \| good	0.638 \| good	9.729 \| good	0.281 \| good
2025-06-09T05:00:00.000Z	49 \| good	9.292 \| good	41.219 \| good	41.304 \| good	0.573 \| good	9.797 \| good	0.286 \| good
2025-06-09T06:00:00.000Z	54 \| moderate	10.667 \| good	11.375 \| good	28.701 \| good	0.508 \| good	9.828 \| good	0.291 \| good
2025-06-09T07:00:00.000Z	44 \| good	7.758 \| good	33.928 \| good	34.296 \| good	0.659 \| good	8.623 \| good	0.285 \| good
2025-06-09T08:00:00.000Z	38 \| good	6.879 \| good	30.526 \| good	32.792 \| good	0.627 \| good	8.338 \| good	0.286 \| good
2025-06-09T09:00:00.000Z	44 \| good	7.555 \| good	33.415 \| good	31.358 \| good	0.595 \| good	8.052 \| good	0.287 \| good
2025-06-09T10:00:00.000Z	44 \| good	7.573 \| good	33.441 \| good	27.4 \| good	0.768 \| good	4.434 \| good	0.261 \| good
2025-06-09T11:00:00.000Z	44 \| good	8.073 \| good	35.271 \| good	28.708 \| good	0.733 \| good	4.501 \| good	0.26 \| good

Guilford

Empower business decisions with accurate air quality data

Guilford, Connecticut air quality map: Real-time AQI near you

0.13ppm

How accurate is Connecticut, USA air quality data?

Air quality measurements for Connecticut, 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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Frequently asked questions

How frequently is the air quality data for Guilford, Connecticut updated?

Air quality data for Guilford, Connecticut is updated on an hourly basis.

When did Guilford, Connecticut experience the worst air quality in the last 24 hours?

The worst air quality in Guilford, Connecticut was recorded at 08:00:00 on 2025-06-06.

When did Guilford, Connecticut have its best air quality in the last 24 hours?

The best air quality in Guilford, Connecticut was recorded at 07:00:00 on 2025-06-07.

What is the real-time air quality index for Guilford, Connecticut?

The real-time air quality index in Guilford, Connecticut is 52, currently categorized as Moderate.

Which pollutant is found most often in Guilford, Connecticut?

The most common pollutant in Guilford, Connecticut is PM2.5.

What can I do if the air quality in Guilford, Connecticut is poor?

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

What are the current PM_2.5 levels in Guilford, Connecticut?

The measured PM_2.5 levels in Guilford, Connecticut at present are 10.226 μg/m³.

What are the current PM₁₀ levels at Guilford, Connecticut?

The current PM₁₀ levels in Guilford, Connecticut are 28.804 μg/m³.

What are the current carbon monoxide (CO) levels at Guilford, Connecticut?

The current carbon monoxide (CO) level in Guilford, Connecticut is 0.227 ppm.

What are the current sulfur dioxide (SO₂) levels at Guilford, Connecticut?

The current sulfur dioxide (SO₂) levels in Guilford, Connecticut are 0.445 ppb.

What are the current ozone (O₃) levels at Guilford, Connecticut?

The current ozone (O₃) levels at Guilford, Connecticut is 26.301 ppm.

What are the current nitrogen dioxide (NO₂) levels at Guilford, Connecticut?

The current nitrogen dioxide (NO₂) levels at Guilford, Connecticut is 4.546 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T12:00:00.000Z	58 \| moderate	12.871 \| fine	42.563 \| good	18.364 \| good	0.42 \| good	22.884 \| good	0.354 \| good
2025-06-05T13:00:00.000Z	58 \| moderate	13.208 \| fine	48.831 \| good	23.888 \| good	0.405 \| good	24.522 \| good	0.416 \| good
2025-06-05T14:00:00.000Z	60 \| moderate	14.338 \| fine	50.839 \| good	29.649 \| good	0.509 \| good	27.181 \| good	0.329 \| good
2025-06-05T15:00:00.000Z	64 \| moderate	16.135 \| fine	69.016 \| fine	50.054 \| good	1.111 \| good	32.222 \| good	0.349 \| good
2025-06-05T16:00:00.000Z	64 \| moderate	15.506 \| fine	78.736 \| fine	39.9 \| good	1.192 \| good	46.02 \| good	0.349 \| good
2025-06-05T17:00:00.000Z	69 \| moderate	19.327 \| fine	78.806 \| fine	54.077 \| good	0.977 \| good	42.465 \| good	0.335 \| good
2025-06-05T18:00:00.000Z	69 \| moderate	19.224 \| fine	46.188 \| good	55.604 \| fine	0.793 \| good	31.074 \| good	0.328 \| good
2025-06-05T19:00:00.000Z	87 \| moderate	13.842 \| fine	63.213 \| fine	66.094 \| fine	0.914 \| good	48.881 \| good	0.328 \| good
2025-06-05T20:00:00.000Z	119 \| sensitive	16.43 \| fine	69.839 \| fine	76.324 \| moderate	0.809 \| good	35.522 \| good	0.382 \| good
2025-06-05T21:00:00.000Z	75 \| moderate	21.967 \| fine	69.038 \| fine	56.399 \| fine	0.61 \| good	18.627 \| good	0.363 \| good
2025-06-05T22:00:00.000Z	105 \| sensitive	23.015 \| fine	70.482 \| fine	71.553 \| moderate	0.482 \| good	24.429 \| good	0.375 \| good
2025-06-05T23:00:00.000Z	90 \| moderate	24.485 \| fine	59.798 \| fine	66.584 \| fine	0.485 \| good	33.328 \| good	0.332 \| good
2025-06-06T00:00:00.000Z	100 \| moderate	21.017 \| fine	68.978 \| fine	69.532 \| fine	0.462 \| good	31.265 \| good	0.339 \| good
2025-06-06T01:00:00.000Z	71 \| moderate	18.895 \| fine	73.124 \| fine	60.58 \| fine	0.473 \| good	16.39 \| good	0.285 \| good
2025-06-06T02:00:00.000Z	71 \| moderate	19.915 \| fine	87.959 \| fine	60.716 \| fine	0.762 \| good	14.583 \| good	0.265 \| good
2025-06-06T03:00:00.000Z	87 \| moderate	17.331 \| fine	82.096 \| fine	65.664 \| fine	0.609 \| good	20.673 \| good	0.272 \| good
2025-06-06T04:00:00.000Z	64 \| moderate	16.043 \| fine	58.556 \| fine	40.194 \| good	0.39 \| good	17.744 \| good	0.217 \| good
2025-06-06T05:00:00.000Z	62 \| moderate	14.64 \| fine	35.814 \| good	55.372 \| fine	0.311 \| good	18.113 \| good	0.197 \| good
2025-06-06T06:00:00.000Z	62 \| moderate	14.683 \| fine	38.011 \| good	43.126 \| good	0.362 \| good	23.392 \| good	0.166 \| good
2025-06-06T07:00:00.000Z	64 \| moderate	16.369 \| fine	41.216 \| good	42.029 \| good	0.307 \| good	18.718 \| good	0.159 \| good
2025-06-06T08:00:00.000Z	67 \| moderate	17.722 \| fine	65.041 \| fine	33.863 \| good	0.282 \| good	15.644 \| good	0.171 \| good
2025-06-06T09:00:00.000Z	62 \| moderate	14.792 \| fine	37.233 \| good	29.005 \| good	0.584 \| good	8.974 \| good	0.152 \| good
2025-06-06T10:00:00.000Z	62 \| moderate	14.649 \| fine	57.295 \| fine	22.903 \| good	0.55 \| good	25.368 \| good	0.152 \| good
2025-06-06T11:00:00.000Z	66 \| moderate	16.913 \| fine	36.22 \| good	28.357 \| good	0.247 \| good	24.566 \| good	0.234 \| good
2025-06-06T12:00:00.000Z	66 \| moderate	17.293 \| fine	40.098 \| good	30.556 \| good	0.547 \| good	15.257 \| good	0.318 \| good
2025-06-06T13:00:00.000Z	64 \| moderate	15.586 \| fine	47.407 \| good	30.463 \| good	0.328 \| good	18.9 \| good	0.276 \| good
2025-06-06T14:00:00.000Z	62 \| moderate	15.051 \| fine	58.573 \| fine	30.004 \| good	0.248 \| good	15.382 \| good	0.241 \| good
2025-06-06T15:00:00.000Z	69 \| moderate	19.171 \| fine	89.929 \| fine	35.17 \| good	0.253 \| good	11.63 \| good	0.288 \| good
2025-06-06T16:00:00.000Z	73 \| moderate	20.838 \| fine	93.701 \| fine	42.562 \| good	0.251 \| good	6.934 \| good	0.295 \| good
2025-06-06T17:00:00.000Z	71 \| moderate	20.454 \| fine	91.44 \| fine	41.917 \| good	0.232 \| good	8.979 \| good	0.315 \| good
2025-06-06T18:00:00.000Z	73 \| moderate	20.595 \| fine	58.65 \| fine	57.06 \| fine	0.347 \| good	11.286 \| good	0.315 \| good
2025-06-06T19:00:00.000Z	77 \| moderate	22.132 \| fine	41.997 \| good	62.65 \| fine	0.344 \| good	8.492 \| good	0.322 \| good
2025-06-06T20:00:00.000Z	93 \| moderate	18.365 \| fine	32.658 \| good	68.407 \| fine	0.275 \| good	9.682 \| good	0.295 \| good
2025-06-06T21:00:00.000Z	90 \| moderate	18.574 \| fine	70.428 \| fine	67.246 \| fine	0.295 \| good	12.169 \| good	0.315 \| good
2025-06-06T22:00:00.000Z	71 \| moderate	19.891 \| fine	60.173 \| fine	57.81 \| fine	0.321 \| good	11.224 \| good	0.26 \| good
2025-06-06T23:00:00.000Z	71 \| moderate	16.844 \| fine	34.17 \| good	61.446 \| fine	0.37 \| good	21.442 \| good	0.26 \| good
2025-06-07T00:00:00.000Z	60 \| moderate	13.94 \| fine	32.286 \| good	45.629 \| good	0.222 \| good	21.297 \| good	0.228 \| good
2025-06-07T01:00:00.000Z	58 \| moderate	12.539 \| fine	33.369 \| good	47.359 \| good	0.238 \| good	9.291 \| good	0.147 \| good
2025-06-07T02:00:00.000Z	56 \| moderate	12.488 \| fine	34.106 \| good	38.126 \| good	0.555 \| good	9.849 \| good	0.166 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	11.55 \| good	29.797 \| good	33.053 \| good	0.591 \| good	4.503 \| good	0.166 \| good
2025-06-07T04:00:00.000Z	56 \| moderate	11.837 \| good	33.769 \| good	37.796 \| good	0.545 \| good	5.267 \| good	0.152 \| good
2025-06-07T05:00:00.000Z	54 \| moderate	11.081 \| good	18.771 \| good	28.815 \| good	0.95 \| good	4.558 \| good	0.291 \| good
2025-06-07T06:00:00.000Z	54 \| moderate	10.737 \| good	17.06 \| good	30.642 \| good	0.917 \| good	3.778 \| good	0.278 \| good
2025-06-07T07:00:00.000Z	44 \| good	7.619 \| good	28.629 \| good	28.881 \| good	0.496 \| good	7.248 \| good	0.278 \| good
2025-06-07T08:00:00.000Z	49 \| good	9.368 \| good	27.187 \| good	17.608 \| good	0.511 \| good	6.524 \| good	0.316 \| good
2025-06-07T09:00:00.000Z	49 \| good	9.43 \| good	24.029 \| good	16.413 \| good	0.494 \| good	14.116 \| good	0.203 \| good
2025-06-07T10:00:00.000Z	52 \| moderate	10.312 \| good	22.163 \| good	16.25 \| good	0.503 \| good	11.298 \| good	0.167 \| good
2025-06-07T11:00:00.000Z	52 \| moderate	10.226 \| good	28.804 \| good	26.301 \| good	0.445 \| good	4.546 \| good	0.227 \| good
2025-06-07T11:00:00.000Z	52 \| moderate	10.226 \| good	28.804 \| good	26.301 \| good	0.445 \| good	4.546 \| good	0.227 \| good
2025-06-07T12:00:00.000Z	52 \| moderate	10.257 \| good	45.363 \| good	29.076 \| good	0.211 \| good	3.708 \| good	0.158 \| good
2025-06-07T13:00:00.000Z	54 \| moderate	10.719 \| good	47.622 \| good	30.174 \| good	0.601 \| good	5.146 \| good	0.16 \| good
2025-06-07T14:00:00.000Z	56 \| moderate	11.725 \| good	52.414 \| good	28.493 \| good	0.45 \| good	5.121 \| good	0.168 \| good
2025-06-07T15:00:00.000Z	56 \| moderate	12.17 \| fine	54.545 \| good	26.767 \| good	0.3 \| good	5.096 \| good	0.175 \| good
2025-06-07T16:00:00.000Z	56 \| moderate	12.458 \| fine	55.641 \| fine	30.828 \| good	0.859 \| good	4.643 \| good	0.183 \| good
2025-06-07T17:00:00.000Z	58 \| moderate	13.265 \| fine	59.843 \| fine	40.528 \| good	0.73 \| good	5.133 \| good	0.192 \| good
2025-06-07T18:00:00.000Z	54 \| moderate	11.257 \| good	49.635 \| good	44.044 \| good	0.601 \| good	5.623 \| good	0.201 \| good
2025-06-07T19:00:00.000Z	54 \| moderate	10.58 \| good	47.044 \| good	48.836 \| good	0.645 \| good	4.17 \| good	0.201 \| good
2025-06-07T20:00:00.000Z	56 \| moderate	12.488 \| fine	56.209 \| fine	52.808 \| good	0.64 \| good	4.905 \| good	0.207 \| good
2025-06-07T21:00:00.000Z	54 \| moderate	11.172 \| good	49.739 \| good	52.284 \| good	0.635 \| good	5.641 \| good	0.213 \| good
2025-06-07T22:00:00.000Z	49 \| good	9.31 \| good	41.238 \| good	47.58 \| good	0.549 \| good	5.758 \| good	0.221 \| good
2025-06-07T23:00:00.000Z	56 \| moderate	12.057 \| good	54.171 \| good	44.745 \| good	0.544 \| good	6.287 \| good	0.219 \| good
2025-06-08T00:00:00.000Z	38 \| good	6.545 \| good	29.306 \| good	41.171 \| good	0.539 \| good	6.817 \| good	0.217 \| good
2025-06-08T01:00:00.000Z	38 \| good	6.907 \| good	30.731 \| good	37.941 \| good	0.543 \| good	7.368 \| good	0.256 \| good
2025-06-08T02:00:00.000Z	44 \| good	8.429 \| good	36.82 \| good	35.032 \| good	0.545 \| good	7.615 \| good	0.253 \| good
2025-06-08T03:00:00.000Z	52 \| moderate	10.337 \| good	45.9 \| good	32.42 \| good	0.547 \| good	7.861 \| good	0.25 \| good
2025-06-08T04:00:00.000Z	54 \| moderate	10.984 \| good	48.598 \| good	29.831 \| good	0.54 \| good	4.648 \| good	0.265 \| good
2025-06-08T05:00:00.000Z	56 \| moderate	12.167 \| fine	54.925 \| good	25.373 \| good	0.543 \| good	4.838 \| good	0.263 \| good
2025-06-08T06:00:00.000Z	56 \| moderate	12.315 \| fine	55.609 \| fine	19.927 \| good	0.546 \| good	5.027 \| good	0.262 \| good
2025-06-08T07:00:00.000Z	54 \| moderate	11.237 \| good	49.448 \| good	16.722 \| good	0.506 \| good	2.618 \| good	0.268 \| good
2025-06-08T08:00:00.000Z	52 \| moderate	9.891 \| good	43.921 \| good	15.051 \| good	0.485 \| good	2.676 \| good	0.259 \| good
2025-06-08T09:00:00.000Z	52 \| moderate	10.393 \| good	46.018 \| good	11.921 \| good	0.463 \| good	2.734 \| good	0.251 \| good
2025-06-08T10:00:00.000Z	60 \| moderate	13.509 \| fine	61.024 \| fine	15.271 \| good	0.418 \| good	3.042 \| good	0.247 \| good
2025-06-08T11:00:00.000Z	62 \| moderate	14.9 \| fine	66.479 \| fine	19.431 \| good	0.409 \| good	3.242 \| good	0.233 \| good
2025-06-08T12:00:00.000Z	67 \| moderate	18.336 \| fine	80.894 \| fine	21.602 \| good	0.4 \| good	3.442 \| good	0.22 \| good
2025-06-08T13:00:00.000Z	67 \| moderate	18.24 \| fine	80.371 \| fine	22.944 \| good	0.321 \| good	2.649 \| good	0.208 \| good
2025-06-08T14:00:00.000Z	64 \| moderate	15.79 \| fine	70.625 \| fine	22.058 \| good	0.311 \| good	2.682 \| good	0.202 \| good
2025-06-08T15:00:00.000Z	60 \| moderate	14.213 \| fine	63.74 \| fine	28.204 \| good	0.301 \| good	2.715 \| good	0.195 \| good
2025-06-08T16:00:00.000Z	66 \| moderate	16.956 \| fine	75.157 \| fine	36.644 \| good	0.279 \| good	1.946 \| good	0.207 \| good
2025-06-08T17:00:00.000Z	67 \| moderate	18.134 \| fine	80.004 \| fine	44.801 \| good	0.27 \| good	2.01 \| good	0.205 \| good
2025-06-08T18:00:00.000Z	62 \| moderate	14.623 \| fine	65.403 \| fine	45.937 \| good	0.261 \| good	2.074 \| good	0.204 \| good
2025-06-08T19:00:00.000Z	58 \| moderate	13.062 \| fine	59.043 \| fine	45.636 \| good	0.306 \| good	2.158 \| good	0.206 \| good
2025-06-08T20:00:00.000Z	60 \| moderate	14.125 \| fine	63.359 \| fine	47.514 \| good	0.279 \| good	2.267 \| good	0.204 \| good
2025-06-08T21:00:00.000Z	58 \| moderate	12.689 \| fine	57.638 \| fine	47.904 \| good	0.253 \| good	2.376 \| good	0.202 \| good
2025-06-08T22:00:00.000Z	56 \| moderate	12.007 \| good	53.556 \| good	44.613 \| good	0.395 \| good	5.731 \| good	0.239 \| good
2025-06-08T23:00:00.000Z	56 \| moderate	11.7 \| good	52.281 \| good	45.881 \| good	0.352 \| good	5.889 \| good	0.239 \| good
2025-06-09T00:00:00.000Z	49 \| good	9.484 \| good	42.323 \| good	43.742 \| good	0.309 \| good	6.047 \| good	0.239 \| good
2025-06-09T01:00:00.000Z	52 \| moderate	9.997 \| good	44.447 \| good	44.36 \| good	0.547 \| good	7.717 \| good	0.258 \| good
2025-06-09T02:00:00.000Z	52 \| moderate	9.79 \| good	43.529 \| good	45.804 \| good	0.49 \| good	7.919 \| good	0.264 \| good
2025-06-09T03:00:00.000Z	52 \| moderate	9.709 \| good	43.031 \| good	47.711 \| good	0.432 \| good	8.121 \| good	0.27 \| good
2025-06-09T04:00:00.000Z	52 \| moderate	9.528 \| good	42.663 \| good	46.268 \| good	0.638 \| good	9.729 \| good	0.281 \| good
2025-06-09T05:00:00.000Z	49 \| good	9.292 \| good	41.219 \| good	41.304 \| good	0.573 \| good	9.797 \| good	0.286 \| good
2025-06-09T06:00:00.000Z	54 \| moderate	10.667 \| good	11.375 \| good	28.701 \| good	0.508 \| good	9.828 \| good	0.291 \| good
2025-06-09T07:00:00.000Z	44 \| good	7.758 \| good	33.928 \| good	34.296 \| good	0.659 \| good	8.623 \| good	0.285 \| good
2025-06-09T08:00:00.000Z	38 \| good	6.879 \| good	30.526 \| good	32.792 \| good	0.627 \| good	8.338 \| good	0.286 \| good
2025-06-09T09:00:00.000Z	44 \| good	7.555 \| good	33.415 \| good	31.358 \| good	0.595 \| good	8.052 \| good	0.287 \| good
2025-06-09T10:00:00.000Z	44 \| good	7.573 \| good	33.441 \| good	27.4 \| good	0.768 \| good	4.434 \| good	0.261 \| good
2025-06-09T11:00:00.000Z	44 \| good	8.073 \| good	35.271 \| good	28.708 \| good	0.733 \| good	4.501 \| good	0.26 \| good

Live air quality index in Guilford, Connecticut today

Major air pollutants in Guilford, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Guilford, Connecticut air quality forecast and history

Empower business decisions with accurate air quality data

Guilford, Connecticut air quality map: Real-time AQI near you

Air quality in nearby cities

Madison, Connecticut

North Branford, Connecticut

Branford, Connecticut

Clinton, Connecticut

East Haven, Connecticut

North Haven, Connecticut

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Frequently asked questions

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What are the current PM2.5 levels in Guilford, Connecticut?

What are the current PM10 levels at Guilford, Connecticut?

What are the current carbon monoxide (CO) levels at Guilford, Connecticut?

What are the current sulfur dioxide (SO2) levels at Guilford, Connecticut?

What are the current ozone (O3) levels at Guilford, Connecticut?

What are the current nitrogen dioxide (NO2) levels at Guilford, Connecticut?

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 Guilford, Connecticut?

What are the current PM₁₀ levels at Guilford, Connecticut?

What are the current sulfur dioxide (SO₂) levels at Guilford, Connecticut?

What are the current ozone (O₃) levels at Guilford, Connecticut?

What are the current nitrogen dioxide (NO₂) levels at Guilford, Connecticut?