What are the current PM10 levels at Guilford, Connecticut?

The current PM10 levels in Guilford, Connecticut are 38.913 μg/m3.

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

The current sulfur dioxide (SO2) levels in Guilford, Connecticut are 0.327 ppb.

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

The current ozone (O3) levels at Guilford, Connecticut is 53.317 ppm.

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

The current nitrogen dioxide (NO2) levels at Guilford, Connecticut is 10.661 ppb.

Real-time air quality index in Guilford, Connecticut today

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

The measured PM2.5 levels in Guilford, Connecticut at present are 9.777 μg/m3.

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)

Common air pollutants in Guilford, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.78 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

38.91 μg/m³

155

255

425

605+

Ozone (O₃)

53.32 ppb

201

201+

Sulfur Dioxide (SO₂)

0.33 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

10.66 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
2026-06-27T20:00:00.000Z	38 \| good	6.523 \| good	12.548 \| good	39.748 \| good	0.184 \| good	9.436 \| good	0.195 \| good
2026-06-27T21:00:00.000Z	42 \| good	6.08 \| good	14.076 \| good	45.302 \| good	0.195 \| good	6.458 \| good	0.141 \| good
2026-06-27T22:00:00.000Z	41 \| good	6.379 \| good	14.472 \| good	43.671 \| good	0.203 \| good	5.717 \| good	0.16 \| good
2026-06-27T23:00:00.000Z	45 \| good	6.879 \| good	20.905 \| good	48.659 \| good	0.22 \| good	6.178 \| good	0.215 \| good
2026-06-28T00:00:00.000Z	41 \| good	6.703 \| good	35.717 \| good	43.631 \| good	0.127 \| good	11.465 \| good	0.277 \| good
2026-06-28T01:00:00.000Z	44 \| good	8.384 \| good	36.126 \| good	39.542 \| good	0.182 \| good	10.716 \| good	0.229 \| good
2026-06-28T02:00:00.000Z	49 \| good	9.178 \| good	36.222 \| good	35.565 \| good	0.181 \| good	6.975 \| good	0.256 \| good
2026-06-28T03:00:00.000Z	60 \| moderate	13.801 \| fine	62.505 \| fine	37.944 \| good	0.408 \| good	6.903 \| good	0.234 \| good
2026-06-28T04:00:00.000Z	52 \| moderate	9.711 \| good	47.193 \| good	34.681 \| good	0.193 \| good	8.092 \| good	0.303 \| good
2026-06-28T05:00:00.000Z	52 \| moderate	9.614 \| good	31.186 \| good	27.944 \| good	0.131 \| good	11.343 \| good	0.351 \| good
2026-06-28T06:00:00.000Z	58 \| moderate	12.561 \| fine	50.452 \| good	28.406 \| good	0.121 \| good	9.346 \| good	0.365 \| good
2026-06-28T07:00:00.000Z	60 \| moderate	14.166 \| fine	52.983 \| good	27.462 \| good	0.326 \| good	4.232 \| good	0.306 \| good
2026-06-28T08:00:00.000Z	62 \| moderate	14.638 \| fine	68.579 \| fine	22.299 \| good	0.136 \| good	8.008 \| good	0.338 \| good
2026-06-28T09:00:00.000Z	60 \| moderate	13.568 \| fine	52.349 \| good	21.318 \| good	0.272 \| good	9.418 \| good	0.284 \| good
2026-06-28T10:00:00.000Z	61 \| moderate	14.393 \| fine	74.748 \| fine	16.375 \| good	0.136 \| good	7.671 \| good	0.229 \| good
2026-06-28T11:00:00.000Z	52 \| moderate	10.159 \| good	55.228 \| fine	16.979 \| good	0.271 \| good	7.314 \| good	0.277 \| good
2026-06-28T12:00:00.000Z	49 \| good	9.093 \| good	22.521 \| good	18.831 \| good	0.333 \| good	7.936 \| good	0.25 \| good
2026-06-28T13:00:00.000Z	49 \| good	8.518 \| good	17.576 \| good	24.249 \| good	0.678 \| good	5.758 \| good	0.204 \| good
2026-06-28T14:00:00.000Z	49 \| good	8.783 \| good	30.697 \| good	23.782 \| good	0.157 \| good	4.353 \| good	0.188 \| good
2026-06-28T15:00:00.000Z	49 \| good	9.079 \| good	28.03 \| good	32.637 \| good	0.191 \| good	4.335 \| good	0.169 \| good
2026-06-28T16:00:00.000Z	52 \| moderate	9.628 \| good	36.556 \| good	39.296 \| good	0.301 \| good	6.667 \| good	0.223 \| good
2026-06-28T17:00:00.000Z	52 \| moderate	9.875 \| good	24.508 \| good	45.684 \| good	0.236 \| good	7.149 \| good	0.175 \| good
2026-06-28T18:00:00.000Z	52 \| moderate	9.68 \| good	27.651 \| good	50.462 \| good	0.227 \| good	5.779 \| good	0.188 \| good
2026-06-28T19:00:00.000Z	51 \| moderate	8.513 \| good	29.033 \| good	54.943 \| good	0.173 \| good	3.397 \| good	0.243 \| good
2026-06-28T20:00:00.000Z	50 \| good	8.862 \| good	34.932 \| good	54.009 \| good	0.196 \| good	2.93 \| good	0.188 \| good
2026-06-28T21:00:00.000Z	67 \| moderate	8.697 \| good	18.468 \| good	60.38 \| fine	0.215 \| good	4.179 \| good	0.188 \| good
2026-06-28T22:00:00.000Z	64 \| moderate	8.067 \| good	18.993 \| good	59.237 \| fine	0.186 \| good	5.374 \| good	0.208 \| good
2026-06-28T23:00:00.000Z	50 \| good	7.069 \| good	14.908 \| good	53.835 \| good	0.138 \| good	6.437 \| good	0.188 \| good
2026-06-29T00:00:00.000Z	46 \| good	5.833 \| good	22.125 \| good	50.373 \| good	0.138 \| good	2.606 \| good	0.235 \| good
2026-06-29T01:00:00.000Z	44 \| good	6.374 \| good	20.105 \| good	47.879 \| good	0.141 \| good	4.145 \| good	0.195 \| good
2026-06-29T02:00:00.000Z	44 \| good	7.688 \| good	18.264 \| good	46.806 \| good	0.203 \| good	4.119 \| good	0.195 \| good
2026-06-29T03:00:00.000Z	54 \| moderate	11.1 \| good	49.306 \| good	40.204 \| good	0.33 \| good	4.135 \| good	0.183 \| good
2026-06-29T04:00:00.000Z	44 \| good	7.712 \| good	24.62 \| good	45.383 \| good	0.296 \| good	4.576 \| good	0.222 \| good
2026-06-29T05:00:00.000Z	44 \| good	8.073 \| good	21.394 \| good	39.237 \| good	0.3 \| good	5.411 \| good	0.159 \| good
2026-06-29T06:00:00.000Z	44 \| good	8.364 \| good	20.629 \| good	35.62 \| good	0.25 \| good	5.659 \| good	0.187 \| good
2026-06-29T07:00:00.000Z	49 \| good	8.51 \| good	17.847 \| good	24.961 \| good	0.469 \| good	5.049 \| good	0.201 \| good
2026-06-29T08:00:00.000Z	44 \| good	8.432 \| good	26.306 \| good	27.461 \| good	0.25 \| good	8.255 \| good	0.187 \| good
2026-06-29T09:00:00.000Z	44 \| good	8.49 \| good	36.649 \| good	26.413 \| good	0.253 \| good	5.056 \| good	0.187 \| good
2026-06-29T10:00:00.000Z	49 \| good	8.87 \| good	18.445 \| good	20.422 \| good	0.145 \| good	6.53 \| good	0.207 \| good
2026-06-29T11:00:00.000Z	52 \| moderate	10.263 \| good	17.982 \| good	18.95 \| good	0.136 \| good	10.95 \| good	0.241 \| good
2026-06-29T12:00:00.000Z	54 \| moderate	10.535 \| good	24.482 \| good	19.546 \| good	0.119 \| good	9.634 \| good	0.222 \| good
2026-06-29T13:00:00.000Z	49 \| good	8.936 \| good	24.46 \| good	26.919 \| good	0.382 \| good	8.797 \| good	0.267 \| good
2026-06-29T14:00:00.000Z	49 \| good	8.636 \| good	30.383 \| good	23.823 \| good	0.231 \| good	4.984 \| good	0.196 \| good
2026-06-29T15:00:00.000Z	52 \| moderate	9.591 \| good	24.742 \| good	26.144 \| good	0.265 \| good	5.09 \| good	0.196 \| good
2026-06-29T16:00:00.000Z	54 \| moderate	10.718 \| good	20.754 \| good	36.791 \| good	0.237 \| good	5.672 \| good	0.202 \| good
2026-06-29T17:00:00.000Z	52 \| moderate	10.178 \| good	24.914 \| good	43.447 \| good	0.284 \| good	7.009 \| good	0.223 \| good
2026-06-29T18:00:00.000Z	52 \| moderate	9.777 \| good	38.913 \| good	53.317 \| good	0.327 \| good	10.661 \| good	0.23 \| good
2026-06-29T19:00:00.000Z	58 \| moderate	11.974 \| good	33.88 \| good	57.444 \| fine	0.264 \| good	9.234 \| good	0.162 \| good
2026-06-29T19:00:00.000Z	52 \| moderate	9.777 \| good	38.913 \| good	53.317 \| good	0.327 \| good	10.661 \| good	0.23 \| good
2026-06-29T20:00:00.000Z	46 \| good	6.153 \| good	27.179 \| good	50.073 \| good	0.235 \| good	1.351 \| good	0.167 \| good
2026-06-29T21:00:00.000Z	47 \| good	5.891 \| good	26.141 \| good	50.733 \| good	0.232 \| good	1.547 \| good	0.168 \| good
2026-06-29T22:00:00.000Z	49 \| good	6.837 \| good	30.083 \| good	53.102 \| good	0.236 \| good	1.89 \| good	0.168 \| good
2026-06-29T23:00:00.000Z	45 \| good	7.029 \| good	31.311 \| good	49.053 \| good	0.238 \| good	2.534 \| good	0.172 \| good
2026-06-30T00:00:00.000Z	44 \| good	7.949 \| good	34.673 \| good	46.247 \| good	0.252 \| good	3.647 \| good	0.177 \| good
2026-06-30T01:00:00.000Z	49 \| good	8.798 \| good	38.587 \| good	42.278 \| good	0.29 \| good	4.602 \| good	0.18 \| good
2026-06-30T02:00:00.000Z	49 \| good	9.312 \| good	41.517 \| good	37.89 \| good	0.327 \| good	4.693 \| good	0.174 \| good
2026-06-30T03:00:00.000Z	52 \| moderate	9.511 \| good	42.415 \| good	34.775 \| good	0.373 \| good	4.58 \| good	0.165 \| good
2026-06-30T04:00:00.000Z	52 \| moderate	10.043 \| good	44.797 \| good	29.227 \| good	0.398 \| good	4.992 \| good	0.161 \| good
2026-06-30T05:00:00.000Z	52 \| moderate	10.081 \| good	44.52 \| good	25.679 \| good	0.411 \| good	5.294 \| good	0.158 \| good
2026-06-30T06:00:00.000Z	54 \| moderate	11.254 \| good	49.894 \| good	24.675 \| good	0.439 \| good	5.705 \| good	0.153 \| good
2026-06-30T07:00:00.000Z	54 \| moderate	11.26 \| good	49.841 \| good	22.153 \| good	0.468 \| good	6.311 \| good	0.151 \| good
2026-06-30T08:00:00.000Z	54 \| moderate	11.465 \| good	50.742 \| good	18.296 \| good	0.499 \| good	7.003 \| good	0.15 \| good
2026-06-30T09:00:00.000Z	52 \| moderate	10.461 \| good	46.181 \| good	20.521 \| good	0.533 \| good	7.721 \| good	0.152 \| good
2026-06-30T10:00:00.000Z	52 \| moderate	10.218 \| good	45.181 \| good	20.249 \| good	0.554 \| good	8.561 \| good	0.156 \| good
2026-06-30T11:00:00.000Z	49 \| good	9.046 \| good	39.926 \| good	25.246 \| good	0.572 \| good	7.964 \| good	0.161 \| good
2026-06-30T12:00:00.000Z	49 \| good	8.732 \| good	38.249 \| good	29.687 \| good	0.676 \| good	7.306 \| good	0.17 \| good
2026-06-30T13:00:00.000Z	49 \| good	9.467 \| good	42.263 \| good	33.592 \| good	0.743 \| good	6.039 \| good	0.179 \| good
2026-06-30T14:00:00.000Z	54 \| moderate	11.248 \| good	49.954 \| good	39.136 \| good	0.746 \| good	4.381 \| good	0.181 \| good
2026-06-30T15:00:00.000Z	58 \| moderate	13.397 \| fine	59.814 \| fine	46.585 \| good	0.7 \| good	3.452 \| good	0.178 \| good
2026-06-30T16:00:00.000Z	60 \| moderate	14.26 \| fine	63.689 \| fine	56.128 \| fine	0.621 \| good	2.856 \| good	0.174 \| good
2026-06-30T17:00:00.000Z	97 \| moderate	14.85 \| fine	66.407 \| fine	68.737 \| fine	0.572 \| good	2.274 \| good	0.167 \| good
2026-06-30T18:00:00.000Z	100 \| moderate	10.985 \| good	48.953 \| good	69.749 \| fine	0.539 \| good	1.761 \| good	0.16 \| good
2026-06-30T19:00:00.000Z	64 \| moderate	7.4 \| good	32.788 \| good	58.74 \| fine	0.497 \| good	1.384 \| good	0.152 \| good
2026-06-30T20:00:00.000Z	45 \| good	6.828 \| good	30.349 \| good	49.441 \| good	0.432 \| good	1.182 \| good	0.143 \| good
2026-06-30T21:00:00.000Z	41 \| good	5.141 \| good	22.178 \| good	44.298 \| good	0.355 \| good	1.172 \| good	0.137 \| good
2026-06-30T22:00:00.000Z	38 \| good	4.078 \| good	17.918 \| good	40.57 \| good	0.287 \| good	1.426 \| good	0.135 \| good
2026-06-30T23:00:00.000Z	34 \| good	3.645 \| good	16.007 \| good	37.458 \| good	0.234 \| good	1.872 \| good	0.135 \| good
2026-07-01T00:00:00.000Z	34 \| good	4.703 \| good	20.585 \| good	37.224 \| good	0.205 \| good	2.35 \| good	0.134 \| good
2026-07-01T01:00:00.000Z	32 \| good	4.952 \| good	21.073 \| good	34.971 \| good	0.216 \| good	2.683 \| good	0.133 \| good
2026-07-01T02:00:00.000Z	33 \| good	6.038 \| good	27 \| good	34.078 \| good	0.256 \| good	3.136 \| good	0.134 \| good
2026-07-01T03:00:00.000Z	38 \| good	6.928 \| good	30.738 \| good	35.727 \| good	0.299 \| good	3.585 \| good	0.134 \| good
2026-07-01T04:00:00.000Z	38 \| good	6.872 \| good	30.137 \| good	33.265 \| good	0.341 \| good	4.024 \| good	0.135 \| good
2026-07-01T05:00:00.000Z	38 \| good	6.604 \| good	29.464 \| good	34.427 \| good	0.385 \| good	4.337 \| good	0.137 \| good
2026-07-01T06:00:00.000Z	44 \| good	8.137 \| good	35.71 \| good	29.421 \| good	0.395 \| good	4.125 \| good	0.133 \| good
2026-07-01T07:00:00.000Z	49 \| good	9.477 \| good	42.157 \| good	26.093 \| good	0.401 \| good	3.736 \| good	0.13 \| good
2026-07-01T08:00:00.000Z	49 \| good	9.455 \| good	41.971 \| good	23.164 \| good	0.413 \| good	3.549 \| good	0.128 \| good
2026-07-01T09:00:00.000Z	44 \| good	8.167 \| good	35.818 \| good	15.416 \| good	0.426 \| good	3.557 \| good	0.129 \| good
2026-07-01T10:00:00.000Z	44 \| good	7.759 \| good	34.126 \| good	15.91 \| good	0.436 \| good	3.696 \| good	0.13 \| good
2026-07-01T11:00:00.000Z	44 \| good	8.129 \| good	35.645 \| good	22.462 \| good	0.441 \| good	3.56 \| good	0.132 \| good
2026-07-01T12:00:00.000Z	49 \| good	9.213 \| good	40.776 \| good	28.896 \| good	0.473 \| good	3.448 \| good	0.138 \| good
2026-07-01T13:00:00.000Z	54 \| moderate	11.425 \| good	50.756 \| good	35.302 \| good	0.53 \| good	3.063 \| good	0.146 \| good
2026-07-01T14:00:00.000Z	60 \| moderate	14.459 \| fine	64.815 \| fine	46.039 \| good	0.557 \| good	2.533 \| good	0.155 \| good
2026-07-01T15:00:00.000Z	71 \| moderate	19.932 \| fine	87.895 \| fine	61.087 \| fine	0.577 \| good	2.125 \| good	0.163 \| good
2026-07-01T16:00:00.000Z	105 \| sensitive	23.955 \| fine	104.941 \| fine	72.073 \| moderate	0.598 \| good	1.777 \| good	0.169 \| good
2026-07-01T17:00:00.000Z	122 \| sensitive	23.928 \| fine	104.851 \| fine	76.874 \| moderate	0.607 \| good	1.502 \| good	0.171 \| good
2026-07-01T18:00:00.000Z	133 \| sensitive	22.621 \| fine	99.167 \| fine	79.861 \| moderate	0.57 \| good	1.302 \| good	0.168 \| good
2026-07-01T19:00:00.000Z	154 \| unhealthy	21.207 \| fine	93.428 \| fine	87.162 \| poor	0.528 \| good	1.234 \| good	0.166 \| good

Guilford

Empower business decisions with accurate air quality data

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

0.27ppm

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 09:00:00 on 2026-06-28.

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

The best air quality in Guilford, Connecticut was recorded at 09:00:00 on 2026-06-29.

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 9.777 μg/m³.

What are the current PM₁₀ levels at Guilford, Connecticut?

The current PM₁₀ levels in Guilford, Connecticut are 38.913 μg/m³.

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

The current carbon monoxide (CO) level in Guilford, Connecticut is 0.23 ppm.

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

The current sulfur dioxide (SO₂) levels in Guilford, Connecticut are 0.327 ppb.

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

The current ozone (O₃) levels at Guilford, Connecticut is 53.317 ppm.

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

The current nitrogen dioxide (NO₂) levels at Guilford, Connecticut is 10.661 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-27T20:00:00.000Z	38 \| good	6.523 \| good	12.548 \| good	39.748 \| good	0.184 \| good	9.436 \| good	0.195 \| good
2026-06-27T21:00:00.000Z	42 \| good	6.08 \| good	14.076 \| good	45.302 \| good	0.195 \| good	6.458 \| good	0.141 \| good
2026-06-27T22:00:00.000Z	41 \| good	6.379 \| good	14.472 \| good	43.671 \| good	0.203 \| good	5.717 \| good	0.16 \| good
2026-06-27T23:00:00.000Z	45 \| good	6.879 \| good	20.905 \| good	48.659 \| good	0.22 \| good	6.178 \| good	0.215 \| good
2026-06-28T00:00:00.000Z	41 \| good	6.703 \| good	35.717 \| good	43.631 \| good	0.127 \| good	11.465 \| good	0.277 \| good
2026-06-28T01:00:00.000Z	44 \| good	8.384 \| good	36.126 \| good	39.542 \| good	0.182 \| good	10.716 \| good	0.229 \| good
2026-06-28T02:00:00.000Z	49 \| good	9.178 \| good	36.222 \| good	35.565 \| good	0.181 \| good	6.975 \| good	0.256 \| good
2026-06-28T03:00:00.000Z	60 \| moderate	13.801 \| fine	62.505 \| fine	37.944 \| good	0.408 \| good	6.903 \| good	0.234 \| good
2026-06-28T04:00:00.000Z	52 \| moderate	9.711 \| good	47.193 \| good	34.681 \| good	0.193 \| good	8.092 \| good	0.303 \| good
2026-06-28T05:00:00.000Z	52 \| moderate	9.614 \| good	31.186 \| good	27.944 \| good	0.131 \| good	11.343 \| good	0.351 \| good
2026-06-28T06:00:00.000Z	58 \| moderate	12.561 \| fine	50.452 \| good	28.406 \| good	0.121 \| good	9.346 \| good	0.365 \| good
2026-06-28T07:00:00.000Z	60 \| moderate	14.166 \| fine	52.983 \| good	27.462 \| good	0.326 \| good	4.232 \| good	0.306 \| good
2026-06-28T08:00:00.000Z	62 \| moderate	14.638 \| fine	68.579 \| fine	22.299 \| good	0.136 \| good	8.008 \| good	0.338 \| good
2026-06-28T09:00:00.000Z	60 \| moderate	13.568 \| fine	52.349 \| good	21.318 \| good	0.272 \| good	9.418 \| good	0.284 \| good
2026-06-28T10:00:00.000Z	61 \| moderate	14.393 \| fine	74.748 \| fine	16.375 \| good	0.136 \| good	7.671 \| good	0.229 \| good
2026-06-28T11:00:00.000Z	52 \| moderate	10.159 \| good	55.228 \| fine	16.979 \| good	0.271 \| good	7.314 \| good	0.277 \| good
2026-06-28T12:00:00.000Z	49 \| good	9.093 \| good	22.521 \| good	18.831 \| good	0.333 \| good	7.936 \| good	0.25 \| good
2026-06-28T13:00:00.000Z	49 \| good	8.518 \| good	17.576 \| good	24.249 \| good	0.678 \| good	5.758 \| good	0.204 \| good
2026-06-28T14:00:00.000Z	49 \| good	8.783 \| good	30.697 \| good	23.782 \| good	0.157 \| good	4.353 \| good	0.188 \| good
2026-06-28T15:00:00.000Z	49 \| good	9.079 \| good	28.03 \| good	32.637 \| good	0.191 \| good	4.335 \| good	0.169 \| good
2026-06-28T16:00:00.000Z	52 \| moderate	9.628 \| good	36.556 \| good	39.296 \| good	0.301 \| good	6.667 \| good	0.223 \| good
2026-06-28T17:00:00.000Z	52 \| moderate	9.875 \| good	24.508 \| good	45.684 \| good	0.236 \| good	7.149 \| good	0.175 \| good
2026-06-28T18:00:00.000Z	52 \| moderate	9.68 \| good	27.651 \| good	50.462 \| good	0.227 \| good	5.779 \| good	0.188 \| good
2026-06-28T19:00:00.000Z	51 \| moderate	8.513 \| good	29.033 \| good	54.943 \| good	0.173 \| good	3.397 \| good	0.243 \| good
2026-06-28T20:00:00.000Z	50 \| good	8.862 \| good	34.932 \| good	54.009 \| good	0.196 \| good	2.93 \| good	0.188 \| good
2026-06-28T21:00:00.000Z	67 \| moderate	8.697 \| good	18.468 \| good	60.38 \| fine	0.215 \| good	4.179 \| good	0.188 \| good
2026-06-28T22:00:00.000Z	64 \| moderate	8.067 \| good	18.993 \| good	59.237 \| fine	0.186 \| good	5.374 \| good	0.208 \| good
2026-06-28T23:00:00.000Z	50 \| good	7.069 \| good	14.908 \| good	53.835 \| good	0.138 \| good	6.437 \| good	0.188 \| good
2026-06-29T00:00:00.000Z	46 \| good	5.833 \| good	22.125 \| good	50.373 \| good	0.138 \| good	2.606 \| good	0.235 \| good
2026-06-29T01:00:00.000Z	44 \| good	6.374 \| good	20.105 \| good	47.879 \| good	0.141 \| good	4.145 \| good	0.195 \| good
2026-06-29T02:00:00.000Z	44 \| good	7.688 \| good	18.264 \| good	46.806 \| good	0.203 \| good	4.119 \| good	0.195 \| good
2026-06-29T03:00:00.000Z	54 \| moderate	11.1 \| good	49.306 \| good	40.204 \| good	0.33 \| good	4.135 \| good	0.183 \| good
2026-06-29T04:00:00.000Z	44 \| good	7.712 \| good	24.62 \| good	45.383 \| good	0.296 \| good	4.576 \| good	0.222 \| good
2026-06-29T05:00:00.000Z	44 \| good	8.073 \| good	21.394 \| good	39.237 \| good	0.3 \| good	5.411 \| good	0.159 \| good
2026-06-29T06:00:00.000Z	44 \| good	8.364 \| good	20.629 \| good	35.62 \| good	0.25 \| good	5.659 \| good	0.187 \| good
2026-06-29T07:00:00.000Z	49 \| good	8.51 \| good	17.847 \| good	24.961 \| good	0.469 \| good	5.049 \| good	0.201 \| good
2026-06-29T08:00:00.000Z	44 \| good	8.432 \| good	26.306 \| good	27.461 \| good	0.25 \| good	8.255 \| good	0.187 \| good
2026-06-29T09:00:00.000Z	44 \| good	8.49 \| good	36.649 \| good	26.413 \| good	0.253 \| good	5.056 \| good	0.187 \| good
2026-06-29T10:00:00.000Z	49 \| good	8.87 \| good	18.445 \| good	20.422 \| good	0.145 \| good	6.53 \| good	0.207 \| good
2026-06-29T11:00:00.000Z	52 \| moderate	10.263 \| good	17.982 \| good	18.95 \| good	0.136 \| good	10.95 \| good	0.241 \| good
2026-06-29T12:00:00.000Z	54 \| moderate	10.535 \| good	24.482 \| good	19.546 \| good	0.119 \| good	9.634 \| good	0.222 \| good
2026-06-29T13:00:00.000Z	49 \| good	8.936 \| good	24.46 \| good	26.919 \| good	0.382 \| good	8.797 \| good	0.267 \| good
2026-06-29T14:00:00.000Z	49 \| good	8.636 \| good	30.383 \| good	23.823 \| good	0.231 \| good	4.984 \| good	0.196 \| good
2026-06-29T15:00:00.000Z	52 \| moderate	9.591 \| good	24.742 \| good	26.144 \| good	0.265 \| good	5.09 \| good	0.196 \| good
2026-06-29T16:00:00.000Z	54 \| moderate	10.718 \| good	20.754 \| good	36.791 \| good	0.237 \| good	5.672 \| good	0.202 \| good
2026-06-29T17:00:00.000Z	52 \| moderate	10.178 \| good	24.914 \| good	43.447 \| good	0.284 \| good	7.009 \| good	0.223 \| good
2026-06-29T18:00:00.000Z	52 \| moderate	9.777 \| good	38.913 \| good	53.317 \| good	0.327 \| good	10.661 \| good	0.23 \| good
2026-06-29T19:00:00.000Z	58 \| moderate	11.974 \| good	33.88 \| good	57.444 \| fine	0.264 \| good	9.234 \| good	0.162 \| good
2026-06-29T19:00:00.000Z	52 \| moderate	9.777 \| good	38.913 \| good	53.317 \| good	0.327 \| good	10.661 \| good	0.23 \| good
2026-06-29T20:00:00.000Z	46 \| good	6.153 \| good	27.179 \| good	50.073 \| good	0.235 \| good	1.351 \| good	0.167 \| good
2026-06-29T21:00:00.000Z	47 \| good	5.891 \| good	26.141 \| good	50.733 \| good	0.232 \| good	1.547 \| good	0.168 \| good
2026-06-29T22:00:00.000Z	49 \| good	6.837 \| good	30.083 \| good	53.102 \| good	0.236 \| good	1.89 \| good	0.168 \| good
2026-06-29T23:00:00.000Z	45 \| good	7.029 \| good	31.311 \| good	49.053 \| good	0.238 \| good	2.534 \| good	0.172 \| good
2026-06-30T00:00:00.000Z	44 \| good	7.949 \| good	34.673 \| good	46.247 \| good	0.252 \| good	3.647 \| good	0.177 \| good
2026-06-30T01:00:00.000Z	49 \| good	8.798 \| good	38.587 \| good	42.278 \| good	0.29 \| good	4.602 \| good	0.18 \| good
2026-06-30T02:00:00.000Z	49 \| good	9.312 \| good	41.517 \| good	37.89 \| good	0.327 \| good	4.693 \| good	0.174 \| good
2026-06-30T03:00:00.000Z	52 \| moderate	9.511 \| good	42.415 \| good	34.775 \| good	0.373 \| good	4.58 \| good	0.165 \| good
2026-06-30T04:00:00.000Z	52 \| moderate	10.043 \| good	44.797 \| good	29.227 \| good	0.398 \| good	4.992 \| good	0.161 \| good
2026-06-30T05:00:00.000Z	52 \| moderate	10.081 \| good	44.52 \| good	25.679 \| good	0.411 \| good	5.294 \| good	0.158 \| good
2026-06-30T06:00:00.000Z	54 \| moderate	11.254 \| good	49.894 \| good	24.675 \| good	0.439 \| good	5.705 \| good	0.153 \| good
2026-06-30T07:00:00.000Z	54 \| moderate	11.26 \| good	49.841 \| good	22.153 \| good	0.468 \| good	6.311 \| good	0.151 \| good
2026-06-30T08:00:00.000Z	54 \| moderate	11.465 \| good	50.742 \| good	18.296 \| good	0.499 \| good	7.003 \| good	0.15 \| good
2026-06-30T09:00:00.000Z	52 \| moderate	10.461 \| good	46.181 \| good	20.521 \| good	0.533 \| good	7.721 \| good	0.152 \| good
2026-06-30T10:00:00.000Z	52 \| moderate	10.218 \| good	45.181 \| good	20.249 \| good	0.554 \| good	8.561 \| good	0.156 \| good
2026-06-30T11:00:00.000Z	49 \| good	9.046 \| good	39.926 \| good	25.246 \| good	0.572 \| good	7.964 \| good	0.161 \| good
2026-06-30T12:00:00.000Z	49 \| good	8.732 \| good	38.249 \| good	29.687 \| good	0.676 \| good	7.306 \| good	0.17 \| good
2026-06-30T13:00:00.000Z	49 \| good	9.467 \| good	42.263 \| good	33.592 \| good	0.743 \| good	6.039 \| good	0.179 \| good
2026-06-30T14:00:00.000Z	54 \| moderate	11.248 \| good	49.954 \| good	39.136 \| good	0.746 \| good	4.381 \| good	0.181 \| good
2026-06-30T15:00:00.000Z	58 \| moderate	13.397 \| fine	59.814 \| fine	46.585 \| good	0.7 \| good	3.452 \| good	0.178 \| good
2026-06-30T16:00:00.000Z	60 \| moderate	14.26 \| fine	63.689 \| fine	56.128 \| fine	0.621 \| good	2.856 \| good	0.174 \| good
2026-06-30T17:00:00.000Z	97 \| moderate	14.85 \| fine	66.407 \| fine	68.737 \| fine	0.572 \| good	2.274 \| good	0.167 \| good
2026-06-30T18:00:00.000Z	100 \| moderate	10.985 \| good	48.953 \| good	69.749 \| fine	0.539 \| good	1.761 \| good	0.16 \| good
2026-06-30T19:00:00.000Z	64 \| moderate	7.4 \| good	32.788 \| good	58.74 \| fine	0.497 \| good	1.384 \| good	0.152 \| good
2026-06-30T20:00:00.000Z	45 \| good	6.828 \| good	30.349 \| good	49.441 \| good	0.432 \| good	1.182 \| good	0.143 \| good
2026-06-30T21:00:00.000Z	41 \| good	5.141 \| good	22.178 \| good	44.298 \| good	0.355 \| good	1.172 \| good	0.137 \| good
2026-06-30T22:00:00.000Z	38 \| good	4.078 \| good	17.918 \| good	40.57 \| good	0.287 \| good	1.426 \| good	0.135 \| good
2026-06-30T23:00:00.000Z	34 \| good	3.645 \| good	16.007 \| good	37.458 \| good	0.234 \| good	1.872 \| good	0.135 \| good
2026-07-01T00:00:00.000Z	34 \| good	4.703 \| good	20.585 \| good	37.224 \| good	0.205 \| good	2.35 \| good	0.134 \| good
2026-07-01T01:00:00.000Z	32 \| good	4.952 \| good	21.073 \| good	34.971 \| good	0.216 \| good	2.683 \| good	0.133 \| good
2026-07-01T02:00:00.000Z	33 \| good	6.038 \| good	27 \| good	34.078 \| good	0.256 \| good	3.136 \| good	0.134 \| good
2026-07-01T03:00:00.000Z	38 \| good	6.928 \| good	30.738 \| good	35.727 \| good	0.299 \| good	3.585 \| good	0.134 \| good
2026-07-01T04:00:00.000Z	38 \| good	6.872 \| good	30.137 \| good	33.265 \| good	0.341 \| good	4.024 \| good	0.135 \| good
2026-07-01T05:00:00.000Z	38 \| good	6.604 \| good	29.464 \| good	34.427 \| good	0.385 \| good	4.337 \| good	0.137 \| good
2026-07-01T06:00:00.000Z	44 \| good	8.137 \| good	35.71 \| good	29.421 \| good	0.395 \| good	4.125 \| good	0.133 \| good
2026-07-01T07:00:00.000Z	49 \| good	9.477 \| good	42.157 \| good	26.093 \| good	0.401 \| good	3.736 \| good	0.13 \| good
2026-07-01T08:00:00.000Z	49 \| good	9.455 \| good	41.971 \| good	23.164 \| good	0.413 \| good	3.549 \| good	0.128 \| good
2026-07-01T09:00:00.000Z	44 \| good	8.167 \| good	35.818 \| good	15.416 \| good	0.426 \| good	3.557 \| good	0.129 \| good
2026-07-01T10:00:00.000Z	44 \| good	7.759 \| good	34.126 \| good	15.91 \| good	0.436 \| good	3.696 \| good	0.13 \| good
2026-07-01T11:00:00.000Z	44 \| good	8.129 \| good	35.645 \| good	22.462 \| good	0.441 \| good	3.56 \| good	0.132 \| good
2026-07-01T12:00:00.000Z	49 \| good	9.213 \| good	40.776 \| good	28.896 \| good	0.473 \| good	3.448 \| good	0.138 \| good
2026-07-01T13:00:00.000Z	54 \| moderate	11.425 \| good	50.756 \| good	35.302 \| good	0.53 \| good	3.063 \| good	0.146 \| good
2026-07-01T14:00:00.000Z	60 \| moderate	14.459 \| fine	64.815 \| fine	46.039 \| good	0.557 \| good	2.533 \| good	0.155 \| good
2026-07-01T15:00:00.000Z	71 \| moderate	19.932 \| fine	87.895 \| fine	61.087 \| fine	0.577 \| good	2.125 \| good	0.163 \| good
2026-07-01T16:00:00.000Z	105 \| sensitive	23.955 \| fine	104.941 \| fine	72.073 \| moderate	0.598 \| good	1.777 \| good	0.169 \| good
2026-07-01T17:00:00.000Z	122 \| sensitive	23.928 \| fine	104.851 \| fine	76.874 \| moderate	0.607 \| good	1.502 \| good	0.171 \| good
2026-07-01T18:00:00.000Z	133 \| sensitive	22.621 \| fine	99.167 \| fine	79.861 \| moderate	0.57 \| good	1.302 \| good	0.168 \| good
2026-07-01T19:00:00.000Z	154 \| unhealthy	21.207 \| fine	93.428 \| fine	87.162 \| poor	0.528 \| good	1.234 \| good	0.166 \| good

Real-time air quality index in Guilford, Connecticut today

Common 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

How accurate is Connecticut, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

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

Which pollutant is found most often in Guilford, Connecticut?

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

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?