What are the current PM10 levels at Guilford, Connecticut?

The current PM10 levels in Guilford, Connecticut are 75.879 μg/m3.

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

The current sulfur dioxide (SO2) levels in Guilford, Connecticut are 0.419 ppb.

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

The current ozone (O3) levels at Guilford, Connecticut is 20.089 ppm.

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

The current nitrogen dioxide (NO2) levels at Guilford, Connecticut is 30.611 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 18.656 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)

18.66 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

75.88 μg/m³

155

255

425

605+

Ozone (O₃)

20.09 ppb

201

201+

Sulfur Dioxide (SO₂)

0.42 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

30.61 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.36 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
2025-12-27T02:00:00.000Z	27 \| good	3.215 \| good	8.266 \| good	28.817 \| good	0.235 \| good	6.789 \| good	0.2 \| good
2025-12-27T03:00:00.000Z	24 \| good	3.096 \| good	10.53 \| good	26.36 \| good	0.22 \| good	6.844 \| good	0.174 \| good
2025-12-27T04:00:00.000Z	25 \| good	3.094 \| good	19.745 \| good	27.24 \| good	0.221 \| good	5.907 \| good	0.2 \| good
2025-12-27T05:00:00.000Z	28 \| good	3.097 \| good	21.341 \| good	30.076 \| good	0.22 \| good	8.448 \| good	0.241 \| good
2025-12-27T06:00:00.000Z	26 \| good	3.234 \| good	13.522 \| good	28.13 \| good	0.206 \| good	8.709 \| good	0.241 \| good
2025-12-27T07:00:00.000Z	26 \| good	3.365 \| good	15.947 \| good	27.965 \| good	0.206 \| good	7.323 \| good	0.2 \| good
2025-12-27T08:00:00.000Z	30 \| good	4.635 \| good	28.698 \| good	31.943 \| good	0.182 \| good	5.321 \| good	0.2 \| good
2025-12-27T09:00:00.000Z	26 \| good	3.481 \| good	19.194 \| good	27.96 \| good	0.24 \| good	7.009 \| good	0.174 \| good
2025-12-27T10:00:00.000Z	26 \| good	3.33 \| good	15.793 \| good	27.583 \| good	0.23 \| good	7.375 \| good	0.17 \| good
2025-12-27T11:00:00.000Z	27 \| good	4.502 \| good	20.978 \| good	24.575 \| good	0.218 \| good	4.8 \| good	0.16 \| good
2025-12-27T12:00:00.000Z	27 \| good	3.391 \| good	9.756 \| good	28.939 \| good	0.143 \| good	5.443 \| good	0.16 \| good
2025-12-27T13:00:00.000Z	28 \| good	3.388 \| good	11.534 \| good	29.697 \| good	0.154 \| good	7.241 \| good	0.16 \| good
2025-12-27T14:00:00.000Z	29 \| good	3.691 \| good	11.975 \| good	30.909 \| good	0.177 \| good	7.825 \| good	0.23 \| good
2025-12-27T15:00:00.000Z	29 \| good	3.691 \| good	9.636 \| good	31.277 \| good	0.162 \| good	8.046 \| good	0.23 \| good
2025-12-27T16:00:00.000Z	29 \| good	3.253 \| good	8.435 \| good	30.967 \| good	0.151 \| good	7.414 \| good	0.246 \| good
2025-12-27T17:00:00.000Z	31 \| good	3.398 \| good	10.678 \| good	32.725 \| good	0.151 \| good	7.119 \| good	0.256 \| good
2025-12-27T18:00:00.000Z	31 \| good	3.349 \| good	8.82 \| good	33.55 \| good	0.162 \| good	7.01 \| good	0.22 \| good
2025-12-27T19:00:00.000Z	30 \| good	3.297 \| good	12.012 \| good	32.489 \| good	0.162 \| good	6.759 \| good	0.22 \| good
2025-12-27T20:00:00.000Z	31 \| good	4.116 \| good	7.069 \| good	33.262 \| good	0.162 \| good	7.135 \| good	0.189 \| good
2025-12-27T21:00:00.000Z	30 \| good	4.35 \| good	9.165 \| good	32.326 \| good	0.162 \| good	8.613 \| good	0.208 \| good
2025-12-27T22:00:00.000Z	27 \| good	4.542 \| good	25.191 \| good	29.078 \| good	0.161 \| good	9.679 \| good	0.285 \| good
2025-12-27T23:00:00.000Z	30 \| good	4.875 \| good	10.764 \| good	31.542 \| good	0.204 \| good	13.409 \| good	0.365 \| good
2025-12-28T00:00:00.000Z	28 \| good	5.473 \| good	27.171 \| good	30.388 \| good	0.211 \| good	16.512 \| good	0.447 \| good
2025-12-28T01:00:00.000Z	44 \| good	7.773 \| good	15.225 \| good	25.304 \| good	0.334 \| good	13.143 \| good	0.572 \| good
2025-12-28T02:00:00.000Z	52 \| moderate	9.626 \| good	36.842 \| good	18.508 \| good	0.428 \| good	23.52 \| good	0.618 \| good
2025-12-28T03:00:00.000Z	54 \| moderate	10.668 \| good	47.414 \| good	14.483 \| good	0.907 \| good	12.756 \| good	0.236 \| good
2025-12-28T04:00:00.000Z	54 \| moderate	11.317 \| good	34.821 \| good	16.879 \| good	0.497 \| good	18.338 \| good	0.604 \| good
2025-12-28T05:00:00.000Z	58 \| moderate	13.491 \| fine	40.925 \| good	22.202 \| good	0.37 \| good	26.058 \| good	0.576 \| good
2025-12-28T06:00:00.000Z	64 \| moderate	15.552 \| fine	39.277 \| good	14.454 \| good	0.513 \| good	21.495 \| good	0.378 \| good
2025-12-28T07:00:00.000Z	60 \| moderate	13.82 \| fine	30.182 \| good	12.665 \| good	0.475 \| good	16.324 \| good	0.44 \| good
2025-12-28T08:00:00.000Z	64 \| moderate	15.504 \| fine	34.36 \| good	17.579 \| good	0.258 \| good	24.249 \| good	0.306 \| good
2025-12-28T09:00:00.000Z	58 \| moderate	12.696 \| fine	28.261 \| good	9.815 \| good	0.52 \| good	17.595 \| good	0.369 \| good
2025-12-28T10:00:00.000Z	58 \| moderate	13.346 \| fine	32.111 \| good	8.675 \| good	0.458 \| good	20.393 \| good	0.524 \| good
2025-12-28T11:00:00.000Z	66 \| moderate	17.043 \| fine	29.346 \| good	13.617 \| good	0.324 \| good	18.782 \| good	0.409 \| good
2025-12-28T12:00:00.000Z	52 \| moderate	10.293 \| good	25.851 \| good	9.299 \| good	0.367 \| good	21.476 \| good	0.426 \| good
2025-12-28T13:00:00.000Z	54 \| moderate	11.436 \| good	42.591 \| good	10.542 \| good	0.366 \| good	20.761 \| good	0.406 \| good
2025-12-28T14:00:00.000Z	52 \| moderate	9.673 \| good	28.486 \| good	18.29 \| good	0.456 \| good	16.391 \| good	0.614 \| good
2025-12-28T15:00:00.000Z	49 \| good	8.644 \| good	20.501 \| good	13.519 \| good	0.299 \| good	19.359 \| good	0.354 \| good
2025-12-28T16:00:00.000Z	44 \| good	8.107 \| good	26.782 \| good	22.955 \| good	0.258 \| good	17.507 \| good	0.277 \| good
2025-12-28T17:00:00.000Z	44 \| good	7.948 \| good	41.207 \| good	22.996 \| good	0.249 \| good	14.87 \| good	0.232 \| good
2025-12-28T18:00:00.000Z	49 \| good	9.452 \| good	28.579 \| good	25.372 \| good	0.274 \| good	14.056 \| good	0.222 \| good
2025-12-28T19:00:00.000Z	49 \| good	9.001 \| good	32.585 \| good	27.41 \| good	0.259 \| good	14.962 \| good	0.275 \| good
2025-12-28T20:00:00.000Z	61 \| moderate	13.256 \| fine	76.084 \| fine	25.637 \| good	0.278 \| good	13.158 \| good	0.302 \| good
2025-12-28T21:00:00.000Z	56 \| moderate	11.807 \| good	52.784 \| good	14.967 \| good	0.263 \| good	17.078 \| good	0.308 \| good
2025-12-28T22:00:00.000Z	60 \| moderate	13.639 \| fine	62.944 \| fine	11.244 \| good	0.253 \| good	19.619 \| good	0.421 \| good
2025-12-28T23:00:00.000Z	54 \| moderate	10.909 \| good	51.255 \| good	13.155 \| good	0.25 \| good	23.054 \| good	0.423 \| good
2025-12-29T00:00:00.000Z	62 \| moderate	15.496 \| fine	74.287 \| fine	20.15 \| good	0.359 \| good	26.617 \| good	0.382 \| good
2025-12-29T01:00:00.000Z	69 \| moderate	18.656 \| fine	75.879 \| fine	20.089 \| good	0.419 \| good	30.611 \| good	0.363 \| good
2025-12-29T02:00:00.000Z	54 \| moderate	11.192 \| good	49.418 \| good	20.531 \| good	1.754 \| good	21.022 \| good	0.232 \| good
2025-12-29T03:00:00.000Z	38 \| good	7.33 \| good	32.188 \| good	20.497 \| good	1.223 \| good	17.064 \| good	0.208 \| good
2025-12-29T04:00:00.000Z	38 \| good	6.553 \| good	29.035 \| good	26.193 \| good	0.926 \| good	12.666 \| good	0.187 \| good
2025-12-29T05:00:00.000Z	31 \| good	5.151 \| good	22.054 \| good	34.21 \| good	0.629 \| good	8.267 \| good	0.166 \| good
2025-12-29T06:00:00.000Z	34 \| good	3.456 \| good	15.04 \| good	36.683 \| good	0.332 \| good	3.869 \| good	0.145 \| good
2025-12-29T07:00:00.000Z	34 \| good	3.35 \| good	14.96 \| good	36.547 \| good	0.337 \| good	3.082 \| good	0.14 \| good
2025-12-29T08:00:00.000Z	32 \| good	3.613 \| good	15.955 \| good	34.944 \| good	0.342 \| good	2.294 \| good	0.135 \| good
2025-12-29T09:00:00.000Z	24 \| good	3.746 \| good	16.401 \| good	25.636 \| good	0.347 \| good	1.507 \| good	0.129 \| good
2025-12-29T10:00:00.000Z	25 \| good	3.571 \| good	15.955 \| good	27.422 \| good	0.498 \| good	2.51 \| good	0.138 \| good
2025-12-29T11:00:00.000Z	30 \| good	3.361 \| good	14.899 \| good	32.492 \| good	0.649 \| good	3.513 \| good	0.146 \| good
2025-12-29T12:00:00.000Z	31 \| good	3.879 \| good	17.062 \| good	32.646 \| good	0.799 \| good	4.516 \| good	0.154 \| good
2025-12-29T13:00:00.000Z	31 \| good	4.891 \| good	21.119 \| good	33.845 \| good	0.838 \| good	5.162 \| good	0.161 \| good
2025-12-29T14:00:00.000Z	29 \| good	5.294 \| good	23.004 \| good	31.185 \| good	0.877 \| good	5.808 \| good	0.167 \| good
2025-12-29T15:00:00.000Z	33 \| good	6.135 \| good	27.047 \| good	30.75 \| good	0.915 \| good	6.454 \| good	0.174 \| good
2025-12-29T16:00:00.000Z	33 \| good	6.322 \| good	27.985 \| good	31.717 \| good	0.898 \| good	6.516 \| good	0.172 \| good
2025-12-29T17:00:00.000Z	33 \| good	6.262 \| good	27.686 \| good	30.08 \| good	0.88 \| good	6.577 \| good	0.17 \| good
2025-12-29T18:00:00.000Z	38 \| good	6.967 \| good	30.827 \| good	28.828 \| good	0.863 \| good	6.638 \| good	0.168 \| good
2025-12-29T19:00:00.000Z	49 \| good	8.57 \| good	37.719 \| good	26.575 \| good	1.122 \| good	7.628 \| good	0.172 \| good
2025-12-29T20:00:00.000Z	44 \| good	7.7 \| good	33.468 \| good	31.043 \| good	1.381 \| good	8.617 \| good	0.176 \| good
2025-12-29T21:00:00.000Z	40 \| good	3.132 \| good	13.834 \| good	42.79 \| good	1.641 \| good	9.606 \| good	0.181 \| good
2025-12-29T22:00:00.000Z	33 \| good	3.762 \| good	16.433 \| good	36.013 \| good	1.594 \| good	7.631 \| good	0.178 \| good
2025-12-29T23:00:00.000Z	29 \| good	4.049 \| good	17.941 \| good	30.883 \| good	1.548 \| good	5.655 \| good	0.176 \| good
2025-12-30T00:00:00.000Z	17 \| good	2.727 \| good	11.048 \| good	18.173 \| good	1.501 \| good	3.68 \| good	0.173 \| good
2025-12-30T01:00:00.000Z	19 \| good	2.333 \| good	9.899 \| good	20.328 \| good	1.279 \| good	3.497 \| good	0.17 \| good
2025-12-30T02:00:00.000Z	15 \| good	2.071 \| good	8.366 \| good	16.277 \| good	1.057 \| good	3.314 \| good	0.167 \| good
2025-12-30T03:00:00.000Z	15 \| good	2.261 \| good	9.245 \| good	15.638 \| good	0.835 \| good	3.132 \| good	0.164 \| good
2025-12-30T04:00:00.000Z	15 \| good	2.26 \| good	9.222 \| good	15.564 \| good	0.719 \| good	2.7 \| good	0.159 \| good
2025-12-30T05:00:00.000Z	20 \| good	2.153 \| good	8.946 \| good	22.053 \| good	0.602 \| good	2.268 \| good	0.153 \| good
2025-12-30T06:00:00.000Z	28 \| good	1.617 \| good	6.387 \| good	30.294 \| good	0.486 \| good	1.836 \| good	0.147 \| good
2025-12-30T07:00:00.000Z	31 \| good	1.159 \| good	4.941 \| good	32.732 \| good	0.411 \| good	1.551 \| good	0.144 \| good
2025-12-30T08:00:00.000Z	31 \| good	1.217 \| good	5.025 \| good	33.501 \| good	0.335 \| good	1.265 \| good	0.141 \| good
2025-12-30T09:00:00.000Z	29 \| good	1.078 \| good	4.323 \| good	31.451 \| good	0.26 \| good	0.979 \| good	0.138 \| good
2025-12-30T10:00:00.000Z	28 \| good	1.11 \| good	4.318 \| good	29.604 \| good	0.283 \| good	1.187 \| good	0.14 \| good
2025-12-30T11:00:00.000Z	30 \| good	0.47 \| good	1.899 \| good	31.586 \| good	0.305 \| good	1.396 \| good	0.143 \| good
2025-12-30T12:00:00.000Z	30 \| good	0.337 \| good	1.087 \| good	32.408 \| good	0.327 \| good	1.604 \| good	0.145 \| good
2025-12-30T13:00:00.000Z	33 \| good	0.299 \| good	1.048 \| good	35.707 \| good	0.335 \| good	1.598 \| good	0.146 \| good
2025-12-30T14:00:00.000Z	33 \| good	0.355 \| good	1.284 \| good	35.976 \| good	0.343 \| good	1.593 \| good	0.146 \| good
2025-12-30T15:00:00.000Z	33 \| good	0.417 \| good	1.323 \| good	36.474 \| good	0.352 \| good	1.587 \| good	0.147 \| good
2025-12-30T16:00:00.000Z	34 \| good	0.59 \| good	2.087 \| good	36.861 \| good	0.339 \| good	1.467 \| good	0.144 \| good
2025-12-30T17:00:00.000Z	34 \| good	0.667 \| good	2.342 \| good	37.072 \| good	0.325 \| good	1.347 \| good	0.142 \| good
2025-12-30T18:00:00.000Z	37 \| good	1.02 \| good	4.064 \| good	39.587 \| good	0.312 \| good	1.228 \| good	0.139 \| good
2025-12-30T19:00:00.000Z	38 \| good	1.26 \| good	5.048 \| good	40.511 \| good	0.342 \| good	1.48 \| good	0.138 \| good
2025-12-30T20:00:00.000Z	41 \| good	1.011 \| good	4.048 \| good	44.446 \| good	0.371 \| good	1.732 \| good	0.137 \| good
2025-12-30T21:00:00.000Z	41 \| good	0.762 \| good	2.941 \| good	43.658 \| good	0.4 \| good	1.984 \| good	0.136 \| good
2025-12-30T22:00:00.000Z	38 \| good	0.831 \| good	3.087 \| good	40.6 \| good	0.465 \| good	2.259 \| good	0.136 \| good
2025-12-30T23:00:00.000Z	36 \| good	0.634 \| good	2.019 \| good	39.035 \| good	0.529 \| good	2.534 \| good	0.137 \| good
2025-12-31T00:00:00.000Z	37 \| good	1.653 \| good	1.759 \| good	39.868 \| good	0.594 \| good	2.81 \| good	0.137 \| good
2025-12-31T01:00:00.000Z	35 \| good	0.505 \| good	1.922 \| good	37.51 \| good	0.589 \| good	2.781 \| good	0.137 \| good

Guilford

Empower business decisions with accurate air quality data

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

0.40ppm

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 11:00:00 on 2025-12-28.

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

The best air quality in Guilford, Connecticut was recorded at 05:00:00 on 2025-12-28.

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

The real-time air quality index in Guilford, Connecticut is 69, 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 18.656 μg/m³.

What are the current PM₁₀ levels at Guilford, Connecticut?

The current PM₁₀ levels in Guilford, Connecticut are 75.879 μg/m³.

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

The current carbon monoxide (CO) level in Guilford, Connecticut is 0.363 ppm.

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

The current sulfur dioxide (SO₂) levels in Guilford, Connecticut are 0.419 ppb.

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

The current ozone (O₃) levels at Guilford, Connecticut is 20.089 ppm.

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

The current nitrogen dioxide (NO₂) levels at Guilford, Connecticut is 30.611 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-27T02:00:00.000Z	27 \| good	3.215 \| good	8.266 \| good	28.817 \| good	0.235 \| good	6.789 \| good	0.2 \| good
2025-12-27T03:00:00.000Z	24 \| good	3.096 \| good	10.53 \| good	26.36 \| good	0.22 \| good	6.844 \| good	0.174 \| good
2025-12-27T04:00:00.000Z	25 \| good	3.094 \| good	19.745 \| good	27.24 \| good	0.221 \| good	5.907 \| good	0.2 \| good
2025-12-27T05:00:00.000Z	28 \| good	3.097 \| good	21.341 \| good	30.076 \| good	0.22 \| good	8.448 \| good	0.241 \| good
2025-12-27T06:00:00.000Z	26 \| good	3.234 \| good	13.522 \| good	28.13 \| good	0.206 \| good	8.709 \| good	0.241 \| good
2025-12-27T07:00:00.000Z	26 \| good	3.365 \| good	15.947 \| good	27.965 \| good	0.206 \| good	7.323 \| good	0.2 \| good
2025-12-27T08:00:00.000Z	30 \| good	4.635 \| good	28.698 \| good	31.943 \| good	0.182 \| good	5.321 \| good	0.2 \| good
2025-12-27T09:00:00.000Z	26 \| good	3.481 \| good	19.194 \| good	27.96 \| good	0.24 \| good	7.009 \| good	0.174 \| good
2025-12-27T10:00:00.000Z	26 \| good	3.33 \| good	15.793 \| good	27.583 \| good	0.23 \| good	7.375 \| good	0.17 \| good
2025-12-27T11:00:00.000Z	27 \| good	4.502 \| good	20.978 \| good	24.575 \| good	0.218 \| good	4.8 \| good	0.16 \| good
2025-12-27T12:00:00.000Z	27 \| good	3.391 \| good	9.756 \| good	28.939 \| good	0.143 \| good	5.443 \| good	0.16 \| good
2025-12-27T13:00:00.000Z	28 \| good	3.388 \| good	11.534 \| good	29.697 \| good	0.154 \| good	7.241 \| good	0.16 \| good
2025-12-27T14:00:00.000Z	29 \| good	3.691 \| good	11.975 \| good	30.909 \| good	0.177 \| good	7.825 \| good	0.23 \| good
2025-12-27T15:00:00.000Z	29 \| good	3.691 \| good	9.636 \| good	31.277 \| good	0.162 \| good	8.046 \| good	0.23 \| good
2025-12-27T16:00:00.000Z	29 \| good	3.253 \| good	8.435 \| good	30.967 \| good	0.151 \| good	7.414 \| good	0.246 \| good
2025-12-27T17:00:00.000Z	31 \| good	3.398 \| good	10.678 \| good	32.725 \| good	0.151 \| good	7.119 \| good	0.256 \| good
2025-12-27T18:00:00.000Z	31 \| good	3.349 \| good	8.82 \| good	33.55 \| good	0.162 \| good	7.01 \| good	0.22 \| good
2025-12-27T19:00:00.000Z	30 \| good	3.297 \| good	12.012 \| good	32.489 \| good	0.162 \| good	6.759 \| good	0.22 \| good
2025-12-27T20:00:00.000Z	31 \| good	4.116 \| good	7.069 \| good	33.262 \| good	0.162 \| good	7.135 \| good	0.189 \| good
2025-12-27T21:00:00.000Z	30 \| good	4.35 \| good	9.165 \| good	32.326 \| good	0.162 \| good	8.613 \| good	0.208 \| good
2025-12-27T22:00:00.000Z	27 \| good	4.542 \| good	25.191 \| good	29.078 \| good	0.161 \| good	9.679 \| good	0.285 \| good
2025-12-27T23:00:00.000Z	30 \| good	4.875 \| good	10.764 \| good	31.542 \| good	0.204 \| good	13.409 \| good	0.365 \| good
2025-12-28T00:00:00.000Z	28 \| good	5.473 \| good	27.171 \| good	30.388 \| good	0.211 \| good	16.512 \| good	0.447 \| good
2025-12-28T01:00:00.000Z	44 \| good	7.773 \| good	15.225 \| good	25.304 \| good	0.334 \| good	13.143 \| good	0.572 \| good
2025-12-28T02:00:00.000Z	52 \| moderate	9.626 \| good	36.842 \| good	18.508 \| good	0.428 \| good	23.52 \| good	0.618 \| good
2025-12-28T03:00:00.000Z	54 \| moderate	10.668 \| good	47.414 \| good	14.483 \| good	0.907 \| good	12.756 \| good	0.236 \| good
2025-12-28T04:00:00.000Z	54 \| moderate	11.317 \| good	34.821 \| good	16.879 \| good	0.497 \| good	18.338 \| good	0.604 \| good
2025-12-28T05:00:00.000Z	58 \| moderate	13.491 \| fine	40.925 \| good	22.202 \| good	0.37 \| good	26.058 \| good	0.576 \| good
2025-12-28T06:00:00.000Z	64 \| moderate	15.552 \| fine	39.277 \| good	14.454 \| good	0.513 \| good	21.495 \| good	0.378 \| good
2025-12-28T07:00:00.000Z	60 \| moderate	13.82 \| fine	30.182 \| good	12.665 \| good	0.475 \| good	16.324 \| good	0.44 \| good
2025-12-28T08:00:00.000Z	64 \| moderate	15.504 \| fine	34.36 \| good	17.579 \| good	0.258 \| good	24.249 \| good	0.306 \| good
2025-12-28T09:00:00.000Z	58 \| moderate	12.696 \| fine	28.261 \| good	9.815 \| good	0.52 \| good	17.595 \| good	0.369 \| good
2025-12-28T10:00:00.000Z	58 \| moderate	13.346 \| fine	32.111 \| good	8.675 \| good	0.458 \| good	20.393 \| good	0.524 \| good
2025-12-28T11:00:00.000Z	66 \| moderate	17.043 \| fine	29.346 \| good	13.617 \| good	0.324 \| good	18.782 \| good	0.409 \| good
2025-12-28T12:00:00.000Z	52 \| moderate	10.293 \| good	25.851 \| good	9.299 \| good	0.367 \| good	21.476 \| good	0.426 \| good
2025-12-28T13:00:00.000Z	54 \| moderate	11.436 \| good	42.591 \| good	10.542 \| good	0.366 \| good	20.761 \| good	0.406 \| good
2025-12-28T14:00:00.000Z	52 \| moderate	9.673 \| good	28.486 \| good	18.29 \| good	0.456 \| good	16.391 \| good	0.614 \| good
2025-12-28T15:00:00.000Z	49 \| good	8.644 \| good	20.501 \| good	13.519 \| good	0.299 \| good	19.359 \| good	0.354 \| good
2025-12-28T16:00:00.000Z	44 \| good	8.107 \| good	26.782 \| good	22.955 \| good	0.258 \| good	17.507 \| good	0.277 \| good
2025-12-28T17:00:00.000Z	44 \| good	7.948 \| good	41.207 \| good	22.996 \| good	0.249 \| good	14.87 \| good	0.232 \| good
2025-12-28T18:00:00.000Z	49 \| good	9.452 \| good	28.579 \| good	25.372 \| good	0.274 \| good	14.056 \| good	0.222 \| good
2025-12-28T19:00:00.000Z	49 \| good	9.001 \| good	32.585 \| good	27.41 \| good	0.259 \| good	14.962 \| good	0.275 \| good
2025-12-28T20:00:00.000Z	61 \| moderate	13.256 \| fine	76.084 \| fine	25.637 \| good	0.278 \| good	13.158 \| good	0.302 \| good
2025-12-28T21:00:00.000Z	56 \| moderate	11.807 \| good	52.784 \| good	14.967 \| good	0.263 \| good	17.078 \| good	0.308 \| good
2025-12-28T22:00:00.000Z	60 \| moderate	13.639 \| fine	62.944 \| fine	11.244 \| good	0.253 \| good	19.619 \| good	0.421 \| good
2025-12-28T23:00:00.000Z	54 \| moderate	10.909 \| good	51.255 \| good	13.155 \| good	0.25 \| good	23.054 \| good	0.423 \| good
2025-12-29T00:00:00.000Z	62 \| moderate	15.496 \| fine	74.287 \| fine	20.15 \| good	0.359 \| good	26.617 \| good	0.382 \| good
2025-12-29T01:00:00.000Z	69 \| moderate	18.656 \| fine	75.879 \| fine	20.089 \| good	0.419 \| good	30.611 \| good	0.363 \| good
2025-12-29T02:00:00.000Z	54 \| moderate	11.192 \| good	49.418 \| good	20.531 \| good	1.754 \| good	21.022 \| good	0.232 \| good
2025-12-29T03:00:00.000Z	38 \| good	7.33 \| good	32.188 \| good	20.497 \| good	1.223 \| good	17.064 \| good	0.208 \| good
2025-12-29T04:00:00.000Z	38 \| good	6.553 \| good	29.035 \| good	26.193 \| good	0.926 \| good	12.666 \| good	0.187 \| good
2025-12-29T05:00:00.000Z	31 \| good	5.151 \| good	22.054 \| good	34.21 \| good	0.629 \| good	8.267 \| good	0.166 \| good
2025-12-29T06:00:00.000Z	34 \| good	3.456 \| good	15.04 \| good	36.683 \| good	0.332 \| good	3.869 \| good	0.145 \| good
2025-12-29T07:00:00.000Z	34 \| good	3.35 \| good	14.96 \| good	36.547 \| good	0.337 \| good	3.082 \| good	0.14 \| good
2025-12-29T08:00:00.000Z	32 \| good	3.613 \| good	15.955 \| good	34.944 \| good	0.342 \| good	2.294 \| good	0.135 \| good
2025-12-29T09:00:00.000Z	24 \| good	3.746 \| good	16.401 \| good	25.636 \| good	0.347 \| good	1.507 \| good	0.129 \| good
2025-12-29T10:00:00.000Z	25 \| good	3.571 \| good	15.955 \| good	27.422 \| good	0.498 \| good	2.51 \| good	0.138 \| good
2025-12-29T11:00:00.000Z	30 \| good	3.361 \| good	14.899 \| good	32.492 \| good	0.649 \| good	3.513 \| good	0.146 \| good
2025-12-29T12:00:00.000Z	31 \| good	3.879 \| good	17.062 \| good	32.646 \| good	0.799 \| good	4.516 \| good	0.154 \| good
2025-12-29T13:00:00.000Z	31 \| good	4.891 \| good	21.119 \| good	33.845 \| good	0.838 \| good	5.162 \| good	0.161 \| good
2025-12-29T14:00:00.000Z	29 \| good	5.294 \| good	23.004 \| good	31.185 \| good	0.877 \| good	5.808 \| good	0.167 \| good
2025-12-29T15:00:00.000Z	33 \| good	6.135 \| good	27.047 \| good	30.75 \| good	0.915 \| good	6.454 \| good	0.174 \| good
2025-12-29T16:00:00.000Z	33 \| good	6.322 \| good	27.985 \| good	31.717 \| good	0.898 \| good	6.516 \| good	0.172 \| good
2025-12-29T17:00:00.000Z	33 \| good	6.262 \| good	27.686 \| good	30.08 \| good	0.88 \| good	6.577 \| good	0.17 \| good
2025-12-29T18:00:00.000Z	38 \| good	6.967 \| good	30.827 \| good	28.828 \| good	0.863 \| good	6.638 \| good	0.168 \| good
2025-12-29T19:00:00.000Z	49 \| good	8.57 \| good	37.719 \| good	26.575 \| good	1.122 \| good	7.628 \| good	0.172 \| good
2025-12-29T20:00:00.000Z	44 \| good	7.7 \| good	33.468 \| good	31.043 \| good	1.381 \| good	8.617 \| good	0.176 \| good
2025-12-29T21:00:00.000Z	40 \| good	3.132 \| good	13.834 \| good	42.79 \| good	1.641 \| good	9.606 \| good	0.181 \| good
2025-12-29T22:00:00.000Z	33 \| good	3.762 \| good	16.433 \| good	36.013 \| good	1.594 \| good	7.631 \| good	0.178 \| good
2025-12-29T23:00:00.000Z	29 \| good	4.049 \| good	17.941 \| good	30.883 \| good	1.548 \| good	5.655 \| good	0.176 \| good
2025-12-30T00:00:00.000Z	17 \| good	2.727 \| good	11.048 \| good	18.173 \| good	1.501 \| good	3.68 \| good	0.173 \| good
2025-12-30T01:00:00.000Z	19 \| good	2.333 \| good	9.899 \| good	20.328 \| good	1.279 \| good	3.497 \| good	0.17 \| good
2025-12-30T02:00:00.000Z	15 \| good	2.071 \| good	8.366 \| good	16.277 \| good	1.057 \| good	3.314 \| good	0.167 \| good
2025-12-30T03:00:00.000Z	15 \| good	2.261 \| good	9.245 \| good	15.638 \| good	0.835 \| good	3.132 \| good	0.164 \| good
2025-12-30T04:00:00.000Z	15 \| good	2.26 \| good	9.222 \| good	15.564 \| good	0.719 \| good	2.7 \| good	0.159 \| good
2025-12-30T05:00:00.000Z	20 \| good	2.153 \| good	8.946 \| good	22.053 \| good	0.602 \| good	2.268 \| good	0.153 \| good
2025-12-30T06:00:00.000Z	28 \| good	1.617 \| good	6.387 \| good	30.294 \| good	0.486 \| good	1.836 \| good	0.147 \| good
2025-12-30T07:00:00.000Z	31 \| good	1.159 \| good	4.941 \| good	32.732 \| good	0.411 \| good	1.551 \| good	0.144 \| good
2025-12-30T08:00:00.000Z	31 \| good	1.217 \| good	5.025 \| good	33.501 \| good	0.335 \| good	1.265 \| good	0.141 \| good
2025-12-30T09:00:00.000Z	29 \| good	1.078 \| good	4.323 \| good	31.451 \| good	0.26 \| good	0.979 \| good	0.138 \| good
2025-12-30T10:00:00.000Z	28 \| good	1.11 \| good	4.318 \| good	29.604 \| good	0.283 \| good	1.187 \| good	0.14 \| good
2025-12-30T11:00:00.000Z	30 \| good	0.47 \| good	1.899 \| good	31.586 \| good	0.305 \| good	1.396 \| good	0.143 \| good
2025-12-30T12:00:00.000Z	30 \| good	0.337 \| good	1.087 \| good	32.408 \| good	0.327 \| good	1.604 \| good	0.145 \| good
2025-12-30T13:00:00.000Z	33 \| good	0.299 \| good	1.048 \| good	35.707 \| good	0.335 \| good	1.598 \| good	0.146 \| good
2025-12-30T14:00:00.000Z	33 \| good	0.355 \| good	1.284 \| good	35.976 \| good	0.343 \| good	1.593 \| good	0.146 \| good
2025-12-30T15:00:00.000Z	33 \| good	0.417 \| good	1.323 \| good	36.474 \| good	0.352 \| good	1.587 \| good	0.147 \| good
2025-12-30T16:00:00.000Z	34 \| good	0.59 \| good	2.087 \| good	36.861 \| good	0.339 \| good	1.467 \| good	0.144 \| good
2025-12-30T17:00:00.000Z	34 \| good	0.667 \| good	2.342 \| good	37.072 \| good	0.325 \| good	1.347 \| good	0.142 \| good
2025-12-30T18:00:00.000Z	37 \| good	1.02 \| good	4.064 \| good	39.587 \| good	0.312 \| good	1.228 \| good	0.139 \| good
2025-12-30T19:00:00.000Z	38 \| good	1.26 \| good	5.048 \| good	40.511 \| good	0.342 \| good	1.48 \| good	0.138 \| good
2025-12-30T20:00:00.000Z	41 \| good	1.011 \| good	4.048 \| good	44.446 \| good	0.371 \| good	1.732 \| good	0.137 \| good
2025-12-30T21:00:00.000Z	41 \| good	0.762 \| good	2.941 \| good	43.658 \| good	0.4 \| good	1.984 \| good	0.136 \| good
2025-12-30T22:00:00.000Z	38 \| good	0.831 \| good	3.087 \| good	40.6 \| good	0.465 \| good	2.259 \| good	0.136 \| good
2025-12-30T23:00:00.000Z	36 \| good	0.634 \| good	2.019 \| good	39.035 \| good	0.529 \| good	2.534 \| good	0.137 \| good
2025-12-31T00:00:00.000Z	37 \| good	1.653 \| good	1.759 \| good	39.868 \| good	0.594 \| good	2.81 \| good	0.137 \| good
2025-12-31T01:00:00.000Z	35 \| good	0.505 \| good	1.922 \| good	37.51 \| good	0.589 \| good	2.781 \| good	0.137 \| 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?