What are the current PM10 levels at Guilford, Connecticut?

The current PM10 levels in Guilford, Connecticut are 3.245 μg/m3.

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

The current sulfur dioxide (SO2) levels in Guilford, Connecticut are 0.725 ppb.

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

The current ozone (O3) levels at Guilford, Connecticut is 21.741 ppm.

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

The current nitrogen dioxide (NO2) levels at Guilford, Connecticut is 3.919 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 0.892 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)

Good

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)

0.89 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

3.25 μg/m³

155

255

425

605+

Ozone (O₃)

21.74 ppb

201

201+

Sulfur Dioxide (SO₂)

0.72 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.92 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.27 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
2026-09-27T00:00:00.000Z	32 \| good	3.322 \| good	7.577 \| good	34.994 \| good	0.129 \| good	2.6 \| good	0.213 \| good
2026-09-27T01:00:00.000Z	32 \| good	3.287 \| good	8.365 \| good	34.698 \| good	0.14 \| good	2.47 \| good	0.213 \| good
2026-09-27T02:00:00.000Z	31 \| good	3.325 \| good	8.348 \| good	34.07 \| good	0.129 \| good	2.131 \| good	0.213 \| good
2026-09-27T03:00:00.000Z	31 \| good	1.616 \| good	6.455 \| good	33.987 \| good	0.116 \| good	1.301 \| good	0.132 \| good
2026-09-27T04:00:00.000Z	34 \| good	3.237 \| good	7.366 \| good	36.946 \| good	0.378 \| good	2.504 \| good	0.213 \| good
2026-09-27T05:00:00.000Z	31 \| good	2.886 \| good	9.303 \| good	34.314 \| good	0.576 \| good	2.369 \| good	0.213 \| good
2026-09-27T06:00:00.000Z	31 \| good	2.775 \| good	8.602 \| good	33.064 \| good	0.363 \| good	1.832 \| good	0.213 \| good
2026-09-27T07:00:00.000Z	30 \| good	2.672 \| good	5.169 \| good	32.427 \| good	0.363 \| good	1.063 \| good	0.211 \| good
2026-09-27T08:00:00.000Z	30 \| good	1.645 \| good	4.379 \| good	31.998 \| good	0.397 \| good	1.735 \| good	0.213 \| good
2026-09-27T09:00:00.000Z	29 \| good	1.242 \| good	4.441 \| good	30.684 \| good	0.378 \| good	1.631 \| good	0.201 \| good
2026-09-27T10:00:00.000Z	28 \| good	0.967 \| good	5.378 \| good	30.036 \| good	0.363 \| good	1.821 \| good	0.201 \| good
2026-09-27T11:00:00.000Z	28 \| good	0.818 \| good	4.381 \| good	30.176 \| good	0.363 \| good	1.829 \| good	0.201 \| good
2026-09-27T12:00:00.000Z	28 \| good	0.447 \| good	8.436 \| good	30.411 \| good	0.397 \| good	2.033 \| good	0.201 \| good
2026-09-27T13:00:00.000Z	28 \| good	0.573 \| good	5.303 \| good	30.07 \| good	0.397 \| good	2.04 \| good	0.201 \| good
2026-09-27T14:00:00.000Z	28 \| good	0.559 \| good	2.706 \| good	30.035 \| good	0.378 \| good	1.894 \| good	0.201 \| good
2026-09-27T15:00:00.000Z	27 \| good	0.664 \| good	1.558 \| good	29.013 \| good	0.349 \| good	2.23 \| good	0.208 \| good
2026-09-27T16:00:00.000Z	27 \| good	0.89 \| good	3.58 \| good	28.727 \| good	0.381 \| good	2.27 \| good	0.208 \| good
2026-09-27T17:00:00.000Z	27 \| good	0.481 \| good	6.236 \| good	28.54 \| good	0.378 \| good	2.564 \| good	0.208 \| good
2026-09-27T18:00:00.000Z	26 \| good	0.651 \| good	4.811 \| good	27.861 \| good	0.599 \| good	2.959 \| good	0.263 \| good
2026-09-27T19:00:00.000Z	49 \| good	1.069 \| good	52.858 \| good	27.976 \| good	0.332 \| good	3.02 \| good	0.263 \| good
2026-09-27T20:00:00.000Z	25 \| good	1.554 \| good	4.352 \| good	26.556 \| good	0.363 \| good	3.082 \| good	0.263 \| good
2026-09-27T21:00:00.000Z	25 \| good	1.406 \| good	4.388 \| good	26.737 \| good	0.363 \| good	3.126 \| good	0.263 \| good
2026-09-27T22:00:00.000Z	25 \| good	1.146 \| good	3.753 \| good	27.387 \| good	0.378 \| good	3.346 \| good	0.263 \| good
2026-09-27T23:00:00.000Z	25 \| good	1.27 \| good	5.402 \| good	27.318 \| good	0.378 \| good	3.779 \| good	0.263 \| good
2026-09-28T00:00:00.000Z	25 \| good	1.324 \| good	5.934 \| good	27.267 \| good	0.344 \| good	3.511 \| good	0.208 \| good
2026-09-28T01:00:00.000Z	23 \| good	1.19 \| good	4.558 \| good	24.703 \| good	0.363 \| good	3.295 \| good	0.201 \| good
2026-09-28T02:00:00.000Z	22 \| good	1.127 \| good	7.163 \| good	23.834 \| good	0.363 \| good	3.058 \| good	0.201 \| good
2026-09-28T03:00:00.000Z	33 \| good	6.254 \| good	27.964 \| good	34.356 \| good	0.182 \| good	2.243 \| good	0.133 \| good
2026-09-28T04:00:00.000Z	26 \| good	1.173 \| good	9.624 \| good	28.077 \| good	0.344 \| good	3.32 \| good	0.201 \| good
2026-09-28T05:00:00.000Z	25 \| good	1.031 \| good	2.636 \| good	27.447 \| good	0.564 \| good	3.158 \| good	0.201 \| good
2026-09-28T06:00:00.000Z	25 \| good	1.034 \| good	3.148 \| good	27.103 \| good	0.363 \| good	2.871 \| good	0.181 \| good
2026-09-28T07:00:00.000Z	25 \| good	0.841 \| good	2.395 \| good	27.212 \| good	0.363 \| good	1.708 \| good	0.151 \| good
2026-09-28T08:00:00.000Z	26 \| good	0.79 \| good	3.128 \| good	27.809 \| good	0.581 \| good	2.794 \| good	0.181 \| good
2026-09-28T09:00:00.000Z	25 \| good	0.765 \| good	2.239 \| good	26.73 \| good	0.547 \| good	3.177 \| good	0.181 \| good
2026-09-28T10:00:00.000Z	26 \| good	1.073 \| good	3.896 \| good	27.907 \| good	0.332 \| good	4.108 \| good	0.181 \| good
2026-09-28T11:00:00.000Z	26 \| good	0.896 \| good	3.872 \| good	27.97 \| good	0.363 \| good	4.601 \| good	0.195 \| good
2026-09-28T12:00:00.000Z	26 \| good	1.246 \| good	3.637 \| good	28.222 \| good	0.542 \| good	5.453 \| good	0.208 \| good
2026-09-28T13:00:00.000Z	25 \| good	0.901 \| good	3.987 \| good	27.162 \| good	0.542 \| good	3.201 \| good	0.241 \| good
2026-09-28T14:00:00.000Z	25 \| good	0.771 \| good	4.003 \| good	27.204 \| good	0.529 \| good	5.582 \| good	0.215 \| good
2026-09-28T15:00:00.000Z	23 \| good	1.016 \| good	5.038 \| good	25.418 \| good	0.513 \| good	5.478 \| good	0.208 \| good
2026-09-28T16:00:00.000Z	23 \| good	0.996 \| good	5.642 \| good	25.03 \| good	0.514 \| good	4.992 \| good	0.215 \| good
2026-09-28T17:00:00.000Z	21 \| good	1.134 \| good	3.826 \| good	22.755 \| good	0.747 \| good	4.413 \| good	0.215 \| good
2026-09-28T18:00:00.000Z	21 \| good	1.094 \| good	3.689 \| good	23.209 \| good	0.655 \| good	4.001 \| good	0.263 \| good
2026-09-28T19:00:00.000Z	21 \| good	0.753 \| good	1.108 \| good	22.515 \| good	0.533 \| good	4.062 \| good	0.263 \| good
2026-09-28T20:00:00.000Z	20 \| good	0.774 \| good	1.877 \| good	21.867 \| good	0.743 \| good	3.777 \| good	0.27 \| good
2026-09-28T21:00:00.000Z	20 \| good	0.796 \| good	2.232 \| good	22.292 \| good	0.513 \| good	3.569 \| good	0.27 \| good
2026-09-28T22:00:00.000Z	20 \| good	0.892 \| good	3.245 \| good	21.741 \| good	0.725 \| good	3.919 \| good	0.27 \| good
2026-09-28T23:00:00.000Z	20 \| good	0.892 \| good	3.245 \| good	21.741 \| good	0.725 \| good	3.919 \| good	0.27 \| good
2026-09-29T00:00:00.000Z	22 \| good	3.788 \| good	16.723 \| good	19.309 \| good	0.194 \| good	4.415 \| good	0.166 \| good
2026-09-29T01:00:00.000Z	22 \| good	3.544 \| good	15.689 \| good	20.131 \| good	0.195 \| good	4.449 \| good	0.165 \| good
2026-09-29T02:00:00.000Z	19 \| good	3.378 \| good	14.723 \| good	19.872 \| good	0.194 \| good	4.415 \| good	0.163 \| good
2026-09-29T03:00:00.000Z	22 \| good	3.631 \| good	15.762 \| good	20.731 \| good	0.192 \| good	4.475 \| good	0.163 \| good
2026-09-29T04:00:00.000Z	22 \| good	4.047 \| good	17.73 \| good	20.773 \| good	0.19 \| good	4.424 \| good	0.162 \| good
2026-09-29T05:00:00.000Z	19 \| good	3.458 \| good	15.488 \| good	20.616 \| good	0.188 \| good	4.231 \| good	0.161 \| good
2026-09-29T06:00:00.000Z	22 \| good	4.029 \| good	17.486 \| good	20.741 \| good	0.191 \| good	4.046 \| good	0.158 \| good
2026-09-29T07:00:00.000Z	22 \| good	4.232 \| good	18.492 \| good	18.767 \| good	0.194 \| good	3.922 \| good	0.156 \| good
2026-09-29T08:00:00.000Z	22 \| good	4.339 \| good	18.672 \| good	16.665 \| good	0.2 \| good	3.927 \| good	0.155 \| good
2026-09-29T09:00:00.000Z	16 \| good	3.166 \| good	13.525 \| good	10.468 \| good	0.209 \| good	4.093 \| good	0.155 \| good
2026-09-29T10:00:00.000Z	16 \| good	3.399 \| good	14.707 \| good	10.27 \| good	0.221 \| good	4.404 \| good	0.156 \| good
2026-09-29T11:00:00.000Z	22 \| good	3.62 \| good	15.752 \| good	11.103 \| good	0.236 \| good	5.264 \| good	0.163 \| good
2026-09-29T12:00:00.000Z	22 \| good	3.772 \| good	16.685 \| good	13.149 \| good	0.25 \| good	5.305 \| good	0.171 \| good
2026-09-29T13:00:00.000Z	16 \| good	3.379 \| good	14.723 \| good	17.041 \| good	0.257 \| good	4.412 \| good	0.174 \| good
2026-09-29T14:00:00.000Z	19 \| good	2.629 \| good	10.965 \| good	21.386 \| good	0.257 \| good	3.281 \| good	0.167 \| good
2026-09-29T15:00:00.000Z	23 \| good	2.271 \| good	9.364 \| good	24.798 \| good	0.239 \| good	2.455 \| good	0.16 \| good
2026-09-29T16:00:00.000Z	25 \| good	2.043 \| good	8.311 \| good	26.747 \| good	0.228 \| good	1.987 \| good	0.154 \| good
2026-09-29T17:00:00.000Z	25 \| good	2.08 \| good	8.219 \| good	26.916 \| good	0.235 \| good	2.098 \| good	0.154 \| good
2026-09-29T18:00:00.000Z	27 \| good	2.212 \| good	8.953 \| good	28.898 \| good	0.254 \| good	2.534 \| good	0.159 \| good
2026-09-29T19:00:00.000Z	28 \| good	1.988 \| good	8.031 \| good	30.042 \| good	0.261 \| good	2.612 \| good	0.16 \| good
2026-09-29T20:00:00.000Z	28 \| good	2.077 \| good	8.517 \| good	30.182 \| good	0.26 \| good	2.64 \| good	0.161 \| good
2026-09-29T21:00:00.000Z	26 \| good	2.608 \| good	10.46 \| good	27.567 \| good	0.255 \| good	2.703 \| good	0.162 \| good
2026-09-29T22:00:00.000Z	23 \| good	2.715 \| good	11.163 \| good	24.504 \| good	0.264 \| good	3.827 \| good	0.173 \| good
2026-09-29T23:00:00.000Z	19 \| good	3.161 \| good	13.48 \| good	20.084 \| good	0.283 \| good	6.357 \| good	0.195 \| good
2026-09-30T00:00:00.000Z	33 \| good	5.507 \| good	23.602 \| good	25.04 \| good	0.311 \| good	7.789 \| good	0.207 \| good
2026-09-30T01:00:00.000Z	33 \| good	6.09 \| good	26.967 \| good	21.916 \| good	0.33 \| good	8.555 \| good	0.212 \| good
2026-09-30T02:00:00.000Z	38 \| good	6.77 \| good	29.787 \| good	19.342 \| good	0.344 \| good	8.837 \| good	0.212 \| good
2026-09-30T03:00:00.000Z	38 \| good	6.87 \| good	30.494 \| good	20.871 \| good	0.353 \| good	8.796 \| good	0.212 \| good
2026-09-30T04:00:00.000Z	38 \| good	7.043 \| good	31.318 \| good	18.727 \| good	0.359 \| good	8.288 \| good	0.209 \| good
2026-09-30T05:00:00.000Z	38 \| good	6.502 \| good	29.146 \| good	17.67 \| good	0.37 \| good	7.431 \| good	0.202 \| good
2026-09-30T06:00:00.000Z	38 \| good	6.756 \| good	29.834 \| good	16.55 \| good	0.386 \| good	6.921 \| good	0.198 \| good
2026-09-30T07:00:00.000Z	38 \| good	7.315 \| good	32.079 \| good	14.624 \| good	0.404 \| good	6.698 \| good	0.195 \| good
2026-09-30T08:00:00.000Z	44 \| good	7.685 \| good	33.778 \| good	13.078 \| good	0.421 \| good	6.618 \| good	0.193 \| good
2026-09-30T09:00:00.000Z	33 \| good	6.24 \| good	27.908 \| good	9.048 \| good	0.444 \| good	6.452 \| good	0.191 \| good
2026-09-30T10:00:00.000Z	33 \| good	6.158 \| good	27.546 \| good	10.689 \| good	0.471 \| good	6.335 \| good	0.189 \| good
2026-09-30T11:00:00.000Z	33 \| good	5.638 \| good	24.392 \| good	10.922 \| good	0.501 \| good	6.66 \| good	0.193 \| good
2026-09-30T12:00:00.000Z	33 \| good	5.637 \| good	24.163 \| good	14.12 \| good	0.514 \| good	6.142 \| good	0.205 \| good
2026-09-30T13:00:00.000Z	27 \| good	5.071 \| good	21.821 \| good	19.755 \| good	0.588 \| good	4.277 \| good	0.197 \| good
2026-09-30T14:00:00.000Z	27 \| good	4.529 \| good	19.586 \| good	25.47 \| good	0.623 \| good	2.963 \| good	0.187 \| good
2026-09-30T15:00:00.000Z	29 \| good	4.154 \| good	18.371 \| good	31.127 \| good	0.581 \| good	2.212 \| good	0.179 \| good
2026-09-30T16:00:00.000Z	31 \| good	4.241 \| good	18.439 \| good	33.147 \| good	0.506 \| good	1.723 \| good	0.17 \| good
2026-09-30T17:00:00.000Z	32 \| good	4.299 \| good	18.804 \| good	34.634 \| good	0.464 \| good	1.636 \| good	0.167 \| good
2026-09-30T18:00:00.000Z	34 \| good	4.174 \| good	18.24 \| good	36.547 \| good	0.44 \| good	1.783 \| good	0.167 \| good
2026-09-30T19:00:00.000Z	36 \| good	5.112 \| good	22.149 \| good	38.551 \| good	0.426 \| good	2.252 \| good	0.17 \| good
2026-09-30T20:00:00.000Z	37 \| good	3.882 \| good	17.041 \| good	40.045 \| good	0.42 \| good	3.011 \| good	0.175 \| good
2026-09-30T21:00:00.000Z	36 \| good	3.566 \| good	15.791 \| good	38.922 \| good	0.416 \| good	4.331 \| good	0.185 \| good
2026-09-30T22:00:00.000Z	35 \| good	4.158 \| good	18.223 \| good	37.94 \| good	0.443 \| good	7.169 \| good	0.21 \| good
2026-09-30T23:00:00.000Z	33 \| good	5.844 \| good	26.089 \| good	36.196 \| good	0.525 \| good	12.293 \| good	0.254 \| good

Guilford

Empower business decisions with accurate air quality data

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

0.29ppm

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

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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 03:00:00 on 2026-09-28.

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

The best air quality in Guilford, Connecticut was recorded at 10:00:00 on 2026-09-28.

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

The real-time air quality index in Guilford, Connecticut is 20, currently categorized as Good.

Which pollutant is found most often in Guilford, Connecticut?

The most common pollutant in Guilford, Connecticut is O3.

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 0.892 μg/m³.

What are the current PM₁₀ levels at Guilford, Connecticut?

The current PM₁₀ levels in Guilford, Connecticut are 3.245 μg/m³.

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

The current carbon monoxide (CO) level in Guilford, Connecticut is 0.27 ppm.

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

The current sulfur dioxide (SO₂) levels in Guilford, Connecticut are 0.725 ppb.

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

The current ozone (O₃) levels at Guilford, Connecticut is 21.741 ppm.

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

The current nitrogen dioxide (NO₂) levels at Guilford, Connecticut is 3.919 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-27T00:00:00.000Z	32 \| good	3.322 \| good	7.577 \| good	34.994 \| good	0.129 \| good	2.6 \| good	0.213 \| good
2026-09-27T01:00:00.000Z	32 \| good	3.287 \| good	8.365 \| good	34.698 \| good	0.14 \| good	2.47 \| good	0.213 \| good
2026-09-27T02:00:00.000Z	31 \| good	3.325 \| good	8.348 \| good	34.07 \| good	0.129 \| good	2.131 \| good	0.213 \| good
2026-09-27T03:00:00.000Z	31 \| good	1.616 \| good	6.455 \| good	33.987 \| good	0.116 \| good	1.301 \| good	0.132 \| good
2026-09-27T04:00:00.000Z	34 \| good	3.237 \| good	7.366 \| good	36.946 \| good	0.378 \| good	2.504 \| good	0.213 \| good
2026-09-27T05:00:00.000Z	31 \| good	2.886 \| good	9.303 \| good	34.314 \| good	0.576 \| good	2.369 \| good	0.213 \| good
2026-09-27T06:00:00.000Z	31 \| good	2.775 \| good	8.602 \| good	33.064 \| good	0.363 \| good	1.832 \| good	0.213 \| good
2026-09-27T07:00:00.000Z	30 \| good	2.672 \| good	5.169 \| good	32.427 \| good	0.363 \| good	1.063 \| good	0.211 \| good
2026-09-27T08:00:00.000Z	30 \| good	1.645 \| good	4.379 \| good	31.998 \| good	0.397 \| good	1.735 \| good	0.213 \| good
2026-09-27T09:00:00.000Z	29 \| good	1.242 \| good	4.441 \| good	30.684 \| good	0.378 \| good	1.631 \| good	0.201 \| good
2026-09-27T10:00:00.000Z	28 \| good	0.967 \| good	5.378 \| good	30.036 \| good	0.363 \| good	1.821 \| good	0.201 \| good
2026-09-27T11:00:00.000Z	28 \| good	0.818 \| good	4.381 \| good	30.176 \| good	0.363 \| good	1.829 \| good	0.201 \| good
2026-09-27T12:00:00.000Z	28 \| good	0.447 \| good	8.436 \| good	30.411 \| good	0.397 \| good	2.033 \| good	0.201 \| good
2026-09-27T13:00:00.000Z	28 \| good	0.573 \| good	5.303 \| good	30.07 \| good	0.397 \| good	2.04 \| good	0.201 \| good
2026-09-27T14:00:00.000Z	28 \| good	0.559 \| good	2.706 \| good	30.035 \| good	0.378 \| good	1.894 \| good	0.201 \| good
2026-09-27T15:00:00.000Z	27 \| good	0.664 \| good	1.558 \| good	29.013 \| good	0.349 \| good	2.23 \| good	0.208 \| good
2026-09-27T16:00:00.000Z	27 \| good	0.89 \| good	3.58 \| good	28.727 \| good	0.381 \| good	2.27 \| good	0.208 \| good
2026-09-27T17:00:00.000Z	27 \| good	0.481 \| good	6.236 \| good	28.54 \| good	0.378 \| good	2.564 \| good	0.208 \| good
2026-09-27T18:00:00.000Z	26 \| good	0.651 \| good	4.811 \| good	27.861 \| good	0.599 \| good	2.959 \| good	0.263 \| good
2026-09-27T19:00:00.000Z	49 \| good	1.069 \| good	52.858 \| good	27.976 \| good	0.332 \| good	3.02 \| good	0.263 \| good
2026-09-27T20:00:00.000Z	25 \| good	1.554 \| good	4.352 \| good	26.556 \| good	0.363 \| good	3.082 \| good	0.263 \| good
2026-09-27T21:00:00.000Z	25 \| good	1.406 \| good	4.388 \| good	26.737 \| good	0.363 \| good	3.126 \| good	0.263 \| good
2026-09-27T22:00:00.000Z	25 \| good	1.146 \| good	3.753 \| good	27.387 \| good	0.378 \| good	3.346 \| good	0.263 \| good
2026-09-27T23:00:00.000Z	25 \| good	1.27 \| good	5.402 \| good	27.318 \| good	0.378 \| good	3.779 \| good	0.263 \| good
2026-09-28T00:00:00.000Z	25 \| good	1.324 \| good	5.934 \| good	27.267 \| good	0.344 \| good	3.511 \| good	0.208 \| good
2026-09-28T01:00:00.000Z	23 \| good	1.19 \| good	4.558 \| good	24.703 \| good	0.363 \| good	3.295 \| good	0.201 \| good
2026-09-28T02:00:00.000Z	22 \| good	1.127 \| good	7.163 \| good	23.834 \| good	0.363 \| good	3.058 \| good	0.201 \| good
2026-09-28T03:00:00.000Z	33 \| good	6.254 \| good	27.964 \| good	34.356 \| good	0.182 \| good	2.243 \| good	0.133 \| good
2026-09-28T04:00:00.000Z	26 \| good	1.173 \| good	9.624 \| good	28.077 \| good	0.344 \| good	3.32 \| good	0.201 \| good
2026-09-28T05:00:00.000Z	25 \| good	1.031 \| good	2.636 \| good	27.447 \| good	0.564 \| good	3.158 \| good	0.201 \| good
2026-09-28T06:00:00.000Z	25 \| good	1.034 \| good	3.148 \| good	27.103 \| good	0.363 \| good	2.871 \| good	0.181 \| good
2026-09-28T07:00:00.000Z	25 \| good	0.841 \| good	2.395 \| good	27.212 \| good	0.363 \| good	1.708 \| good	0.151 \| good
2026-09-28T08:00:00.000Z	26 \| good	0.79 \| good	3.128 \| good	27.809 \| good	0.581 \| good	2.794 \| good	0.181 \| good
2026-09-28T09:00:00.000Z	25 \| good	0.765 \| good	2.239 \| good	26.73 \| good	0.547 \| good	3.177 \| good	0.181 \| good
2026-09-28T10:00:00.000Z	26 \| good	1.073 \| good	3.896 \| good	27.907 \| good	0.332 \| good	4.108 \| good	0.181 \| good
2026-09-28T11:00:00.000Z	26 \| good	0.896 \| good	3.872 \| good	27.97 \| good	0.363 \| good	4.601 \| good	0.195 \| good
2026-09-28T12:00:00.000Z	26 \| good	1.246 \| good	3.637 \| good	28.222 \| good	0.542 \| good	5.453 \| good	0.208 \| good
2026-09-28T13:00:00.000Z	25 \| good	0.901 \| good	3.987 \| good	27.162 \| good	0.542 \| good	3.201 \| good	0.241 \| good
2026-09-28T14:00:00.000Z	25 \| good	0.771 \| good	4.003 \| good	27.204 \| good	0.529 \| good	5.582 \| good	0.215 \| good
2026-09-28T15:00:00.000Z	23 \| good	1.016 \| good	5.038 \| good	25.418 \| good	0.513 \| good	5.478 \| good	0.208 \| good
2026-09-28T16:00:00.000Z	23 \| good	0.996 \| good	5.642 \| good	25.03 \| good	0.514 \| good	4.992 \| good	0.215 \| good
2026-09-28T17:00:00.000Z	21 \| good	1.134 \| good	3.826 \| good	22.755 \| good	0.747 \| good	4.413 \| good	0.215 \| good
2026-09-28T18:00:00.000Z	21 \| good	1.094 \| good	3.689 \| good	23.209 \| good	0.655 \| good	4.001 \| good	0.263 \| good
2026-09-28T19:00:00.000Z	21 \| good	0.753 \| good	1.108 \| good	22.515 \| good	0.533 \| good	4.062 \| good	0.263 \| good
2026-09-28T20:00:00.000Z	20 \| good	0.774 \| good	1.877 \| good	21.867 \| good	0.743 \| good	3.777 \| good	0.27 \| good
2026-09-28T21:00:00.000Z	20 \| good	0.796 \| good	2.232 \| good	22.292 \| good	0.513 \| good	3.569 \| good	0.27 \| good
2026-09-28T22:00:00.000Z	20 \| good	0.892 \| good	3.245 \| good	21.741 \| good	0.725 \| good	3.919 \| good	0.27 \| good
2026-09-28T23:00:00.000Z	20 \| good	0.892 \| good	3.245 \| good	21.741 \| good	0.725 \| good	3.919 \| good	0.27 \| good
2026-09-29T00:00:00.000Z	22 \| good	3.788 \| good	16.723 \| good	19.309 \| good	0.194 \| good	4.415 \| good	0.166 \| good
2026-09-29T01:00:00.000Z	22 \| good	3.544 \| good	15.689 \| good	20.131 \| good	0.195 \| good	4.449 \| good	0.165 \| good
2026-09-29T02:00:00.000Z	19 \| good	3.378 \| good	14.723 \| good	19.872 \| good	0.194 \| good	4.415 \| good	0.163 \| good
2026-09-29T03:00:00.000Z	22 \| good	3.631 \| good	15.762 \| good	20.731 \| good	0.192 \| good	4.475 \| good	0.163 \| good
2026-09-29T04:00:00.000Z	22 \| good	4.047 \| good	17.73 \| good	20.773 \| good	0.19 \| good	4.424 \| good	0.162 \| good
2026-09-29T05:00:00.000Z	19 \| good	3.458 \| good	15.488 \| good	20.616 \| good	0.188 \| good	4.231 \| good	0.161 \| good
2026-09-29T06:00:00.000Z	22 \| good	4.029 \| good	17.486 \| good	20.741 \| good	0.191 \| good	4.046 \| good	0.158 \| good
2026-09-29T07:00:00.000Z	22 \| good	4.232 \| good	18.492 \| good	18.767 \| good	0.194 \| good	3.922 \| good	0.156 \| good
2026-09-29T08:00:00.000Z	22 \| good	4.339 \| good	18.672 \| good	16.665 \| good	0.2 \| good	3.927 \| good	0.155 \| good
2026-09-29T09:00:00.000Z	16 \| good	3.166 \| good	13.525 \| good	10.468 \| good	0.209 \| good	4.093 \| good	0.155 \| good
2026-09-29T10:00:00.000Z	16 \| good	3.399 \| good	14.707 \| good	10.27 \| good	0.221 \| good	4.404 \| good	0.156 \| good
2026-09-29T11:00:00.000Z	22 \| good	3.62 \| good	15.752 \| good	11.103 \| good	0.236 \| good	5.264 \| good	0.163 \| good
2026-09-29T12:00:00.000Z	22 \| good	3.772 \| good	16.685 \| good	13.149 \| good	0.25 \| good	5.305 \| good	0.171 \| good
2026-09-29T13:00:00.000Z	16 \| good	3.379 \| good	14.723 \| good	17.041 \| good	0.257 \| good	4.412 \| good	0.174 \| good
2026-09-29T14:00:00.000Z	19 \| good	2.629 \| good	10.965 \| good	21.386 \| good	0.257 \| good	3.281 \| good	0.167 \| good
2026-09-29T15:00:00.000Z	23 \| good	2.271 \| good	9.364 \| good	24.798 \| good	0.239 \| good	2.455 \| good	0.16 \| good
2026-09-29T16:00:00.000Z	25 \| good	2.043 \| good	8.311 \| good	26.747 \| good	0.228 \| good	1.987 \| good	0.154 \| good
2026-09-29T17:00:00.000Z	25 \| good	2.08 \| good	8.219 \| good	26.916 \| good	0.235 \| good	2.098 \| good	0.154 \| good
2026-09-29T18:00:00.000Z	27 \| good	2.212 \| good	8.953 \| good	28.898 \| good	0.254 \| good	2.534 \| good	0.159 \| good
2026-09-29T19:00:00.000Z	28 \| good	1.988 \| good	8.031 \| good	30.042 \| good	0.261 \| good	2.612 \| good	0.16 \| good
2026-09-29T20:00:00.000Z	28 \| good	2.077 \| good	8.517 \| good	30.182 \| good	0.26 \| good	2.64 \| good	0.161 \| good
2026-09-29T21:00:00.000Z	26 \| good	2.608 \| good	10.46 \| good	27.567 \| good	0.255 \| good	2.703 \| good	0.162 \| good
2026-09-29T22:00:00.000Z	23 \| good	2.715 \| good	11.163 \| good	24.504 \| good	0.264 \| good	3.827 \| good	0.173 \| good
2026-09-29T23:00:00.000Z	19 \| good	3.161 \| good	13.48 \| good	20.084 \| good	0.283 \| good	6.357 \| good	0.195 \| good
2026-09-30T00:00:00.000Z	33 \| good	5.507 \| good	23.602 \| good	25.04 \| good	0.311 \| good	7.789 \| good	0.207 \| good
2026-09-30T01:00:00.000Z	33 \| good	6.09 \| good	26.967 \| good	21.916 \| good	0.33 \| good	8.555 \| good	0.212 \| good
2026-09-30T02:00:00.000Z	38 \| good	6.77 \| good	29.787 \| good	19.342 \| good	0.344 \| good	8.837 \| good	0.212 \| good
2026-09-30T03:00:00.000Z	38 \| good	6.87 \| good	30.494 \| good	20.871 \| good	0.353 \| good	8.796 \| good	0.212 \| good
2026-09-30T04:00:00.000Z	38 \| good	7.043 \| good	31.318 \| good	18.727 \| good	0.359 \| good	8.288 \| good	0.209 \| good
2026-09-30T05:00:00.000Z	38 \| good	6.502 \| good	29.146 \| good	17.67 \| good	0.37 \| good	7.431 \| good	0.202 \| good
2026-09-30T06:00:00.000Z	38 \| good	6.756 \| good	29.834 \| good	16.55 \| good	0.386 \| good	6.921 \| good	0.198 \| good
2026-09-30T07:00:00.000Z	38 \| good	7.315 \| good	32.079 \| good	14.624 \| good	0.404 \| good	6.698 \| good	0.195 \| good
2026-09-30T08:00:00.000Z	44 \| good	7.685 \| good	33.778 \| good	13.078 \| good	0.421 \| good	6.618 \| good	0.193 \| good
2026-09-30T09:00:00.000Z	33 \| good	6.24 \| good	27.908 \| good	9.048 \| good	0.444 \| good	6.452 \| good	0.191 \| good
2026-09-30T10:00:00.000Z	33 \| good	6.158 \| good	27.546 \| good	10.689 \| good	0.471 \| good	6.335 \| good	0.189 \| good
2026-09-30T11:00:00.000Z	33 \| good	5.638 \| good	24.392 \| good	10.922 \| good	0.501 \| good	6.66 \| good	0.193 \| good
2026-09-30T12:00:00.000Z	33 \| good	5.637 \| good	24.163 \| good	14.12 \| good	0.514 \| good	6.142 \| good	0.205 \| good
2026-09-30T13:00:00.000Z	27 \| good	5.071 \| good	21.821 \| good	19.755 \| good	0.588 \| good	4.277 \| good	0.197 \| good
2026-09-30T14:00:00.000Z	27 \| good	4.529 \| good	19.586 \| good	25.47 \| good	0.623 \| good	2.963 \| good	0.187 \| good
2026-09-30T15:00:00.000Z	29 \| good	4.154 \| good	18.371 \| good	31.127 \| good	0.581 \| good	2.212 \| good	0.179 \| good
2026-09-30T16:00:00.000Z	31 \| good	4.241 \| good	18.439 \| good	33.147 \| good	0.506 \| good	1.723 \| good	0.17 \| good
2026-09-30T17:00:00.000Z	32 \| good	4.299 \| good	18.804 \| good	34.634 \| good	0.464 \| good	1.636 \| good	0.167 \| good
2026-09-30T18:00:00.000Z	34 \| good	4.174 \| good	18.24 \| good	36.547 \| good	0.44 \| good	1.783 \| good	0.167 \| good
2026-09-30T19:00:00.000Z	36 \| good	5.112 \| good	22.149 \| good	38.551 \| good	0.426 \| good	2.252 \| good	0.17 \| good
2026-09-30T20:00:00.000Z	37 \| good	3.882 \| good	17.041 \| good	40.045 \| good	0.42 \| good	3.011 \| good	0.175 \| good
2026-09-30T21:00:00.000Z	36 \| good	3.566 \| good	15.791 \| good	38.922 \| good	0.416 \| good	4.331 \| good	0.185 \| good
2026-09-30T22:00:00.000Z	35 \| good	4.158 \| good	18.223 \| good	37.94 \| good	0.443 \| good	7.169 \| good	0.21 \| good
2026-09-30T23:00:00.000Z	33 \| good	5.844 \| good	26.089 \| good	36.196 \| good	0.525 \| good	12.293 \| good	0.254 \| 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?