What are the current PM10 levels at Guilford, Connecticut?

The current PM10 levels in Guilford, Connecticut are 38.204 μg/m3.

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

The current sulfur dioxide (SO2) levels in Guilford, Connecticut are 0.616 ppb.

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

The current ozone (O3) levels at Guilford, Connecticut is 46.938 ppm.

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

The current nitrogen dioxide (NO2) levels at Guilford, Connecticut is 21.036 ppb.

Real-time 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)

Common air pollutants in Guilford, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

10.83 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

50.63 μg/m³

155

255

425

605+

Ozone (O₃)

16.78 ppb

201

201+

Sulfur Dioxide (SO₂)

0.22 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

9.17 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.29 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
2025-07-28T12:00:00.000Z	75 \| moderate	22.092 \| fine	34.538 \| good	19.096 \| good	0.279 \| good	9.85 \| good	0.295 \| good
2025-07-28T13:00:00.000Z	56 \| moderate	12.219 \| fine	25.555 \| good	23.312 \| good	0.293 \| good	6.876 \| good	0.292 \| good
2025-07-28T14:00:00.000Z	54 \| moderate	11 \| good	31.196 \| good	19.634 \| good	0.28 \| good	4.647 \| good	0.279 \| good
2025-07-28T15:00:00.000Z	49 \| good	9.324 \| good	18.946 \| good	25.96 \| good	0.246 \| good	4.771 \| good	0.28 \| good
2025-07-28T16:00:00.000Z	52 \| moderate	10.412 \| good	40.535 \| good	33.901 \| good	0.295 \| good	3.996 \| good	0.152 \| good
2025-07-28T17:00:00.000Z	52 \| moderate	9.536 \| good	31.482 \| good	44.283 \| good	0.312 \| good	5.841 \| good	0.152 \| good
2025-07-28T18:00:00.000Z	52 \| moderate	9.681 \| good	38.758 \| good	46.421 \| good	0.595 \| good	17.747 \| good	0.207 \| good
2025-07-28T19:00:00.000Z	52 \| moderate	9.813 \| good	48.924 \| good	48.928 \| good	0.229 \| good	9.727 \| good	0.152 \| good
2025-07-28T20:00:00.000Z	52 \| moderate	10.255 \| good	43.196 \| good	45.592 \| good	0.346 \| good	12.595 \| good	0.207 \| good
2025-07-28T21:00:00.000Z	54 \| moderate	10.936 \| good	29.067 \| good	43.989 \| good	0.26 \| good	5.064 \| good	0.266 \| good
2025-07-28T22:00:00.000Z	58 \| moderate	13.028 \| fine	58.543 \| fine	46.542 \| good	0.205 \| good	2.887 \| good	0.253 \| good
2025-07-28T23:00:00.000Z	58 \| moderate	12.809 \| fine	51.696 \| good	56.827 \| fine	0.241 \| good	8.266 \| good	0.221 \| good
2025-07-29T00:00:00.000Z	64 \| moderate	12.174 \| fine	29.976 \| good	59.268 \| fine	0.312 \| good	11.332 \| good	0.269 \| good
2025-07-29T01:00:00.000Z	62 \| moderate	14.779 \| fine	27.124 \| good	43.406 \| good	0.26 \| good	4.054 \| good	0.267 \| good
2025-07-29T02:00:00.000Z	62 \| moderate	15.439 \| fine	22.814 \| good	44.384 \| good	0.353 \| good	14.353 \| good	0.241 \| good
2025-07-29T03:00:00.000Z	60 \| moderate	13.894 \| fine	47.544 \| good	40.099 \| good	0.476 \| good	12.93 \| good	0.287 \| good
2025-07-29T04:00:00.000Z	64 \| moderate	15.512 \| fine	50.408 \| good	39.636 \| good	0.308 \| good	16.056 \| good	0.307 \| good
2025-07-29T05:00:00.000Z	60 \| moderate	13.738 \| fine	31.485 \| good	34.636 \| good	0.896 \| good	8.409 \| good	0.381 \| good
2025-07-29T06:00:00.000Z	58 \| moderate	13.385 \| fine	53.169 \| good	30.499 \| good	0.54 \| good	10.687 \| good	0.281 \| good
2025-07-29T07:00:00.000Z	58 \| moderate	12.742 \| fine	63.936 \| fine	27.015 \| good	0.736 \| good	8.142 \| good	0.37 \| good
2025-07-29T08:00:00.000Z	62 \| moderate	14.839 \| fine	53.298 \| good	31.981 \| good	0.691 \| good	8.137 \| good	0.37 \| good
2025-07-29T09:00:00.000Z	58 \| moderate	13.387 \| fine	57.864 \| fine	20.328 \| good	0.306 \| good	10.427 \| good	0.274 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	13.982 \| fine	28.642 \| good	17.297 \| good	0.314 \| good	7.075 \| good	0.395 \| good
2025-07-29T11:00:00.000Z	60 \| moderate	14.378 \| fine	44.77 \| good	17.884 \| good	0.351 \| good	10.895 \| good	0.393 \| good
2025-07-29T12:00:00.000Z	62 \| moderate	14.57 \| fine	25.324 \| good	15.617 \| good	0.228 \| good	20.487 \| good	0.47 \| good
2025-07-29T13:00:00.000Z	58 \| moderate	13.494 \| fine	32.639 \| good	24.399 \| good	0.417 \| good	15.726 \| good	0.521 \| good
2025-07-29T14:00:00.000Z	62 \| moderate	15.083 \| fine	40.861 \| good	18.773 \| good	0.475 \| good	20.139 \| good	0.356 \| good
2025-07-29T15:00:00.000Z	64 \| moderate	15.576 \| fine	46.485 \| good	31.212 \| good	1.012 \| good	25.039 \| good	0.389 \| good
2025-07-29T16:00:00.000Z	66 \| moderate	17.2 \| fine	79.994 \| fine	27.838 \| good	0.934 \| good	23.366 \| good	0.363 \| good
2025-07-29T17:00:00.000Z	66 \| moderate	17.49 \| fine	38.204 \| good	46.938 \| good	0.616 \| good	21.036 \| good	0.355 \| good
2025-07-29T18:00:00.000Z	60 \| moderate	14.007 \| fine	37.749 \| good	56.356 \| fine	0.494 \| good	13.903 \| good	0.489 \| good
2025-07-29T19:00:00.000Z	84 \| moderate	15.358 \| fine	39.608 \| good	65.122 \| fine	0.477 \| good	14.094 \| good	0.328 \| good
2025-07-29T20:00:00.000Z	93 \| moderate	14.544 \| fine	27.306 \| good	68.318 \| fine	0.633 \| good	31.658 \| good	0.304 \| good
2025-07-29T21:00:00.000Z	71 \| moderate	11.615 \| good	59.86 \| fine	60.838 \| fine	0.727 \| good	28.624 \| good	0.266 \| good
2025-07-29T22:00:00.000Z	108 \| sensitive	10.525 \| good	33.763 \| good	73.36 \| moderate	0.459 \| good	4.023 \| good	0.266 \| good
2025-07-29T23:00:00.000Z	122 \| sensitive	11.382 \| good	55.458 \| fine	76.8 \| moderate	0.501 \| good	3.04 \| good	0.266 \| good
2025-07-30T00:00:00.000Z	100 \| moderate	14.746 \| fine	65.899 \| fine	69.578 \| fine	0.533 \| good	5.514 \| good	0.279 \| good
2025-07-30T01:00:00.000Z	112 \| sensitive	14.265 \| fine	52.632 \| good	73.732 \| moderate	0.521 \| good	3.775 \| good	0.239 \| good
2025-07-30T02:00:00.000Z	80 \| moderate	14.368 \| fine	58.431 \| fine	63.943 \| fine	0.608 \| good	5.578 \| good	0.303 \| good
2025-07-30T03:00:00.000Z	81 \| moderate	25.478 \| fine	111.123 \| fine	42.651 \| good	0.855 \| good	8.393 \| good	0.255 \| good
2025-07-30T04:00:00.000Z	58 \| moderate	13.461 \| fine	39.002 \| good	47.047 \| good	0.412 \| good	21.286 \| good	0.22 \| good
2025-07-30T05:00:00.000Z	62 \| moderate	15.085 \| fine	53.806 \| good	53.281 \| good	0.425 \| good	17.618 \| good	0.219 \| good
2025-07-30T06:00:00.000Z	56 \| moderate	12.164 \| fine	27.812 \| good	47.82 \| good	0.609 \| good	15.925 \| good	0.248 \| good
2025-07-30T07:00:00.000Z	67 \| moderate	17.991 \| fine	64.676 \| fine	36.943 \| good	0.267 \| good	15.357 \| good	0.234 \| good
2025-07-30T08:00:00.000Z	66 \| moderate	16.712 \| fine	71.689 \| fine	38.951 \| good	0.33 \| good	14.331 \| good	0.234 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	13.01 \| fine	42.56 \| good	24.006 \| good	0.257 \| good	13.085 \| good	0.207 \| good
2025-07-30T10:00:00.000Z	54 \| moderate	10.827 \| good	50.635 \| good	16.777 \| good	0.224 \| good	9.166 \| good	0.29 \| good
2025-07-30T11:00:00.000Z	54 \| moderate	10.827 \| good	50.635 \| good	16.777 \| good	0.224 \| good	9.166 \| good	0.29 \| good
2025-07-29T19:00:00.000Z	84 \| moderate	25.434 \| fine	110.45 \| fine	65.467 \| fine	0.655 \| good	2.034 \| good	0.232 \| good
2025-07-29T20:00:00.000Z	77 \| moderate	23.461 \| fine	102.86 \| fine	58.596 \| fine	0.676 \| good	2.129 \| good	0.227 \| good
2025-07-29T21:00:00.000Z	73 \| moderate	20.905 \| fine	91.984 \| fine	55.001 \| fine	0.697 \| good	2.224 \| good	0.222 \| good
2025-07-29T22:00:00.000Z	73 \| moderate	21.282 \| fine	93.638 \| fine	55.587 \| fine	0.693 \| good	3.518 \| good	0.229 \| good
2025-07-29T23:00:00.000Z	82 \| moderate	26.482 \| fine	115.615 \| fine	59.462 \| fine	0.69 \| good	4.812 \| good	0.235 \| good
2025-07-30T00:00:00.000Z	82 \| moderate	25.646 \| fine	111.781 \| fine	57.451 \| fine	0.686 \| good	6.106 \| good	0.242 \| good
2025-07-30T01:00:00.000Z	79 \| moderate	23.595 \| fine	102.674 \| fine	47.711 \| good	0.73 \| good	6.533 \| good	0.242 \| good
2025-07-30T02:00:00.000Z	79 \| moderate	23.978 \| fine	104.736 \| fine	42.074 \| good	0.773 \| good	6.96 \| good	0.242 \| good
2025-07-30T03:00:00.000Z	81 \| moderate	25.312 \| fine	110.094 \| fine	38.492 \| good	0.817 \| good	7.387 \| good	0.242 \| good
2025-07-30T04:00:00.000Z	79 \| moderate	24.246 \| fine	105.683 \| fine	33.328 \| good	0.801 \| good	6.994 \| good	0.234 \| good
2025-07-30T05:00:00.000Z	75 \| moderate	22.181 \| fine	97.08 \| fine	29.909 \| good	0.786 \| good	6.601 \| good	0.227 \| good
2025-07-30T06:00:00.000Z	71 \| moderate	19.566 \| fine	85.997 \| fine	21.543 \| good	0.77 \| good	6.208 \| good	0.219 \| good
2025-07-30T07:00:00.000Z	66 \| moderate	17.002 \| fine	75.43 \| fine	16.774 \| good	0.729 \| good	5.582 \| good	0.209 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	14.654 \| fine	65.486 \| fine	16.248 \| good	0.687 \| good	4.956 \| good	0.2 \| good
2025-07-30T09:00:00.000Z	67 \| moderate	18.112 \| fine	80.35 \| fine	15.334 \| good	0.646 \| good	4.33 \| good	0.19 \| good
2025-07-30T10:00:00.000Z	67 \| moderate	17.522 \| fine	78.365 \| fine	11.598 \| good	0.64 \| good	4.335 \| good	0.195 \| good
2025-07-30T11:00:00.000Z	69 \| moderate	19.161 \| fine	84.668 \| fine	16.345 \| good	0.634 \| good	4.34 \| good	0.199 \| good
2025-07-30T12:00:00.000Z	73 \| moderate	21.375 \| fine	93.396 \| fine	27.164 \| good	0.628 \| good	4.345 \| good	0.204 \| good
2025-07-30T13:00:00.000Z	75 \| moderate	22.34 \| fine	98.162 \| fine	38.25 \| good	0.624 \| good	4.3 \| good	0.213 \| good
2025-07-30T14:00:00.000Z	77 \| moderate	23.042 \| fine	100.747 \| fine	48.072 \| good	0.62 \| good	4.256 \| good	0.222 \| good
2025-07-30T15:00:00.000Z	79 \| moderate	24.494 \| fine	107.337 \| fine	55.825 \| fine	0.615 \| good	4.212 \| good	0.232 \| good
2025-07-30T16:00:00.000Z	81 \| moderate	24.756 \| fine	108.071 \| fine	60.815 \| fine	0.645 \| good	3.459 \| good	0.232 \| good
2025-07-30T17:00:00.000Z	82 \| moderate	25.837 \| fine	112.081 \| fine	58.016 \| fine	0.674 \| good	2.706 \| good	0.233 \| good
2025-07-30T18:00:00.000Z	82 \| moderate	25.563 \| fine	111.105 \| fine	64.126 \| fine	0.704 \| good	1.953 \| good	0.233 \| good
2025-07-30T19:00:00.000Z	100 \| moderate	24.635 \| fine	107.207 \| fine	70.293 \| fine	0.705 \| good	1.981 \| good	0.224 \| good
2025-07-30T20:00:00.000Z	108 \| sensitive	24.289 \| fine	105.791 \| fine	72.554 \| moderate	0.706 \| good	2.008 \| good	0.214 \| good
2025-07-30T21:00:00.000Z	129 \| sensitive	27.102 \| fine	117.772 \| fine	79.329 \| moderate	0.707 \| good	2.035 \| good	0.205 \| good
2025-07-30T22:00:00.000Z	147 \| sensitive	28.739 \| fine	124.37 \| fine	84.463 \| moderate	0.71 \| good	3.444 \| good	0.213 \| good
2025-07-30T23:00:00.000Z	115 \| sensitive	29.042 \| fine	126.205 \| fine	75.374 \| moderate	0.713 \| good	4.853 \| good	0.222 \| good
2025-07-31T00:00:00.000Z	77 \| moderate	23.366 \| fine	102.57 \| fine	58.443 \| fine	0.716 \| good	6.263 \| good	0.23 \| good
2025-07-31T01:00:00.000Z	73 \| moderate	21.343 \| fine	93.646 \| fine	50.255 \| good	0.763 \| good	7.016 \| good	0.24 \| good
2025-07-31T02:00:00.000Z	69 \| moderate	18.92 \| fine	83.036 \| fine	46.767 \| good	0.81 \| good	7.77 \| good	0.249 \| good
2025-07-31T03:00:00.000Z	66 \| moderate	16.803 \| fine	74.932 \| fine	43.097 \| good	0.858 \| good	8.523 \| good	0.259 \| good
2025-07-31T04:00:00.000Z	60 \| moderate	13.939 \| fine	62.656 \| fine	39.973 \| good	0.913 \| good	9.127 \| good	0.263 \| good
2025-07-31T05:00:00.000Z	58 \| moderate	12.807 \| fine	57.989 \| fine	38.147 \| good	0.969 \| good	9.73 \| good	0.267 \| good
2025-07-31T06:00:00.000Z	56 \| moderate	12.314 \| fine	55.521 \| fine	34.464 \| good	1.024 \| good	10.334 \| good	0.272 \| good
2025-07-31T07:00:00.000Z	56 \| moderate	12.152 \| fine	54.36 \| good	32.755 \| good	1.004 \| good	8.828 \| good	0.255 \| good
2025-07-31T08:00:00.000Z	56 \| moderate	11.975 \| good	53.536 \| good	32.959 \| good	0.984 \| good	7.323 \| good	0.238 \| good
2025-07-31T09:00:00.000Z	58 \| moderate	12.734 \| fine	57.444 \| fine	31.339 \| good	0.964 \| good	5.818 \| good	0.221 \| good
2025-07-31T10:00:00.000Z	60 \| moderate	13.614 \| fine	61.335 \| fine	27.868 \| good	0.912 \| good	5.171 \| good	0.212 \| good
2025-07-31T11:00:00.000Z	62 \| moderate	14.697 \| fine	65.875 \| fine	25.079 \| good	0.861 \| good	4.523 \| good	0.204 \| good
2025-07-31T12:00:00.000Z	75 \| moderate	21.798 \| fine	95.85 \| fine	29.953 \| good	0.81 \| good	3.876 \| good	0.196 \| good
2025-07-31T13:00:00.000Z	75 \| moderate	22.469 \| fine	98.492 \| fine	34.507 \| good	0.845 \| good	3.835 \| good	0.203 \| good
2025-07-31T14:00:00.000Z	75 \| moderate	22.47 \| fine	98.467 \| fine	37.977 \| good	0.879 \| good	3.795 \| good	0.21 \| good
2025-07-31T15:00:00.000Z	77 \| moderate	22.666 \| fine	98.729 \| fine	43.347 \| good	0.913 \| good	3.755 \| good	0.216 \| good
2025-07-31T16:00:00.000Z	75 \| moderate	22.115 \| fine	96.503 \| fine	49.077 \| good	0.833 \| good	3.222 \| good	0.22 \| good
2025-07-31T17:00:00.000Z	75 \| moderate	21.786 \| fine	95.546 \| fine	49.539 \| good	0.753 \| good	2.689 \| good	0.224 \| good
2025-07-31T18:00:00.000Z	73 \| moderate	21.198 \| fine	93.227 \| fine	46.149 \| good	0.672 \| good	2.156 \| good	0.228 \| good

Guilford

Empower business decisions with accurate air quality data

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

0.39ppm

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 05:00:00 on 2025-07-29.

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

The best air quality in Guilford, Connecticut was recorded at 08:00:00 on 2025-07-28.

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

The real-time air quality index in Guilford, Connecticut is 66, 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 17.49 μg/m³.

What are the current PM₁₀ levels at Guilford, Connecticut?

The current PM₁₀ levels in Guilford, Connecticut are 38.204 μg/m³.

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

The current carbon monoxide (CO) level in Guilford, Connecticut is 0.355 ppm.

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

The current sulfur dioxide (SO₂) levels in Guilford, Connecticut are 0.616 ppb.

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

The current ozone (O₃) levels at Guilford, Connecticut is 46.938 ppm.

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

The current nitrogen dioxide (NO₂) levels at Guilford, Connecticut is 21.036 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T12:00:00.000Z	75 \| moderate	22.092 \| fine	34.538 \| good	19.096 \| good	0.279 \| good	9.85 \| good	0.295 \| good
2025-07-28T13:00:00.000Z	56 \| moderate	12.219 \| fine	25.555 \| good	23.312 \| good	0.293 \| good	6.876 \| good	0.292 \| good
2025-07-28T14:00:00.000Z	54 \| moderate	11 \| good	31.196 \| good	19.634 \| good	0.28 \| good	4.647 \| good	0.279 \| good
2025-07-28T15:00:00.000Z	49 \| good	9.324 \| good	18.946 \| good	25.96 \| good	0.246 \| good	4.771 \| good	0.28 \| good
2025-07-28T16:00:00.000Z	52 \| moderate	10.412 \| good	40.535 \| good	33.901 \| good	0.295 \| good	3.996 \| good	0.152 \| good
2025-07-28T17:00:00.000Z	52 \| moderate	9.536 \| good	31.482 \| good	44.283 \| good	0.312 \| good	5.841 \| good	0.152 \| good
2025-07-28T18:00:00.000Z	52 \| moderate	9.681 \| good	38.758 \| good	46.421 \| good	0.595 \| good	17.747 \| good	0.207 \| good
2025-07-28T19:00:00.000Z	52 \| moderate	9.813 \| good	48.924 \| good	48.928 \| good	0.229 \| good	9.727 \| good	0.152 \| good
2025-07-28T20:00:00.000Z	52 \| moderate	10.255 \| good	43.196 \| good	45.592 \| good	0.346 \| good	12.595 \| good	0.207 \| good
2025-07-28T21:00:00.000Z	54 \| moderate	10.936 \| good	29.067 \| good	43.989 \| good	0.26 \| good	5.064 \| good	0.266 \| good
2025-07-28T22:00:00.000Z	58 \| moderate	13.028 \| fine	58.543 \| fine	46.542 \| good	0.205 \| good	2.887 \| good	0.253 \| good
2025-07-28T23:00:00.000Z	58 \| moderate	12.809 \| fine	51.696 \| good	56.827 \| fine	0.241 \| good	8.266 \| good	0.221 \| good
2025-07-29T00:00:00.000Z	64 \| moderate	12.174 \| fine	29.976 \| good	59.268 \| fine	0.312 \| good	11.332 \| good	0.269 \| good
2025-07-29T01:00:00.000Z	62 \| moderate	14.779 \| fine	27.124 \| good	43.406 \| good	0.26 \| good	4.054 \| good	0.267 \| good
2025-07-29T02:00:00.000Z	62 \| moderate	15.439 \| fine	22.814 \| good	44.384 \| good	0.353 \| good	14.353 \| good	0.241 \| good
2025-07-29T03:00:00.000Z	60 \| moderate	13.894 \| fine	47.544 \| good	40.099 \| good	0.476 \| good	12.93 \| good	0.287 \| good
2025-07-29T04:00:00.000Z	64 \| moderate	15.512 \| fine	50.408 \| good	39.636 \| good	0.308 \| good	16.056 \| good	0.307 \| good
2025-07-29T05:00:00.000Z	60 \| moderate	13.738 \| fine	31.485 \| good	34.636 \| good	0.896 \| good	8.409 \| good	0.381 \| good
2025-07-29T06:00:00.000Z	58 \| moderate	13.385 \| fine	53.169 \| good	30.499 \| good	0.54 \| good	10.687 \| good	0.281 \| good
2025-07-29T07:00:00.000Z	58 \| moderate	12.742 \| fine	63.936 \| fine	27.015 \| good	0.736 \| good	8.142 \| good	0.37 \| good
2025-07-29T08:00:00.000Z	62 \| moderate	14.839 \| fine	53.298 \| good	31.981 \| good	0.691 \| good	8.137 \| good	0.37 \| good
2025-07-29T09:00:00.000Z	58 \| moderate	13.387 \| fine	57.864 \| fine	20.328 \| good	0.306 \| good	10.427 \| good	0.274 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	13.982 \| fine	28.642 \| good	17.297 \| good	0.314 \| good	7.075 \| good	0.395 \| good
2025-07-29T11:00:00.000Z	60 \| moderate	14.378 \| fine	44.77 \| good	17.884 \| good	0.351 \| good	10.895 \| good	0.393 \| good
2025-07-29T12:00:00.000Z	62 \| moderate	14.57 \| fine	25.324 \| good	15.617 \| good	0.228 \| good	20.487 \| good	0.47 \| good
2025-07-29T13:00:00.000Z	58 \| moderate	13.494 \| fine	32.639 \| good	24.399 \| good	0.417 \| good	15.726 \| good	0.521 \| good
2025-07-29T14:00:00.000Z	62 \| moderate	15.083 \| fine	40.861 \| good	18.773 \| good	0.475 \| good	20.139 \| good	0.356 \| good
2025-07-29T15:00:00.000Z	64 \| moderate	15.576 \| fine	46.485 \| good	31.212 \| good	1.012 \| good	25.039 \| good	0.389 \| good
2025-07-29T16:00:00.000Z	66 \| moderate	17.2 \| fine	79.994 \| fine	27.838 \| good	0.934 \| good	23.366 \| good	0.363 \| good
2025-07-29T17:00:00.000Z	66 \| moderate	17.49 \| fine	38.204 \| good	46.938 \| good	0.616 \| good	21.036 \| good	0.355 \| good
2025-07-29T18:00:00.000Z	60 \| moderate	14.007 \| fine	37.749 \| good	56.356 \| fine	0.494 \| good	13.903 \| good	0.489 \| good
2025-07-29T19:00:00.000Z	84 \| moderate	15.358 \| fine	39.608 \| good	65.122 \| fine	0.477 \| good	14.094 \| good	0.328 \| good
2025-07-29T20:00:00.000Z	93 \| moderate	14.544 \| fine	27.306 \| good	68.318 \| fine	0.633 \| good	31.658 \| good	0.304 \| good
2025-07-29T21:00:00.000Z	71 \| moderate	11.615 \| good	59.86 \| fine	60.838 \| fine	0.727 \| good	28.624 \| good	0.266 \| good
2025-07-29T22:00:00.000Z	108 \| sensitive	10.525 \| good	33.763 \| good	73.36 \| moderate	0.459 \| good	4.023 \| good	0.266 \| good
2025-07-29T23:00:00.000Z	122 \| sensitive	11.382 \| good	55.458 \| fine	76.8 \| moderate	0.501 \| good	3.04 \| good	0.266 \| good
2025-07-30T00:00:00.000Z	100 \| moderate	14.746 \| fine	65.899 \| fine	69.578 \| fine	0.533 \| good	5.514 \| good	0.279 \| good
2025-07-30T01:00:00.000Z	112 \| sensitive	14.265 \| fine	52.632 \| good	73.732 \| moderate	0.521 \| good	3.775 \| good	0.239 \| good
2025-07-30T02:00:00.000Z	80 \| moderate	14.368 \| fine	58.431 \| fine	63.943 \| fine	0.608 \| good	5.578 \| good	0.303 \| good
2025-07-30T03:00:00.000Z	81 \| moderate	25.478 \| fine	111.123 \| fine	42.651 \| good	0.855 \| good	8.393 \| good	0.255 \| good
2025-07-30T04:00:00.000Z	58 \| moderate	13.461 \| fine	39.002 \| good	47.047 \| good	0.412 \| good	21.286 \| good	0.22 \| good
2025-07-30T05:00:00.000Z	62 \| moderate	15.085 \| fine	53.806 \| good	53.281 \| good	0.425 \| good	17.618 \| good	0.219 \| good
2025-07-30T06:00:00.000Z	56 \| moderate	12.164 \| fine	27.812 \| good	47.82 \| good	0.609 \| good	15.925 \| good	0.248 \| good
2025-07-30T07:00:00.000Z	67 \| moderate	17.991 \| fine	64.676 \| fine	36.943 \| good	0.267 \| good	15.357 \| good	0.234 \| good
2025-07-30T08:00:00.000Z	66 \| moderate	16.712 \| fine	71.689 \| fine	38.951 \| good	0.33 \| good	14.331 \| good	0.234 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	13.01 \| fine	42.56 \| good	24.006 \| good	0.257 \| good	13.085 \| good	0.207 \| good
2025-07-30T10:00:00.000Z	54 \| moderate	10.827 \| good	50.635 \| good	16.777 \| good	0.224 \| good	9.166 \| good	0.29 \| good
2025-07-30T11:00:00.000Z	54 \| moderate	10.827 \| good	50.635 \| good	16.777 \| good	0.224 \| good	9.166 \| good	0.29 \| good
2025-07-29T19:00:00.000Z	84 \| moderate	25.434 \| fine	110.45 \| fine	65.467 \| fine	0.655 \| good	2.034 \| good	0.232 \| good
2025-07-29T20:00:00.000Z	77 \| moderate	23.461 \| fine	102.86 \| fine	58.596 \| fine	0.676 \| good	2.129 \| good	0.227 \| good
2025-07-29T21:00:00.000Z	73 \| moderate	20.905 \| fine	91.984 \| fine	55.001 \| fine	0.697 \| good	2.224 \| good	0.222 \| good
2025-07-29T22:00:00.000Z	73 \| moderate	21.282 \| fine	93.638 \| fine	55.587 \| fine	0.693 \| good	3.518 \| good	0.229 \| good
2025-07-29T23:00:00.000Z	82 \| moderate	26.482 \| fine	115.615 \| fine	59.462 \| fine	0.69 \| good	4.812 \| good	0.235 \| good
2025-07-30T00:00:00.000Z	82 \| moderate	25.646 \| fine	111.781 \| fine	57.451 \| fine	0.686 \| good	6.106 \| good	0.242 \| good
2025-07-30T01:00:00.000Z	79 \| moderate	23.595 \| fine	102.674 \| fine	47.711 \| good	0.73 \| good	6.533 \| good	0.242 \| good
2025-07-30T02:00:00.000Z	79 \| moderate	23.978 \| fine	104.736 \| fine	42.074 \| good	0.773 \| good	6.96 \| good	0.242 \| good
2025-07-30T03:00:00.000Z	81 \| moderate	25.312 \| fine	110.094 \| fine	38.492 \| good	0.817 \| good	7.387 \| good	0.242 \| good
2025-07-30T04:00:00.000Z	79 \| moderate	24.246 \| fine	105.683 \| fine	33.328 \| good	0.801 \| good	6.994 \| good	0.234 \| good
2025-07-30T05:00:00.000Z	75 \| moderate	22.181 \| fine	97.08 \| fine	29.909 \| good	0.786 \| good	6.601 \| good	0.227 \| good
2025-07-30T06:00:00.000Z	71 \| moderate	19.566 \| fine	85.997 \| fine	21.543 \| good	0.77 \| good	6.208 \| good	0.219 \| good
2025-07-30T07:00:00.000Z	66 \| moderate	17.002 \| fine	75.43 \| fine	16.774 \| good	0.729 \| good	5.582 \| good	0.209 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	14.654 \| fine	65.486 \| fine	16.248 \| good	0.687 \| good	4.956 \| good	0.2 \| good
2025-07-30T09:00:00.000Z	67 \| moderate	18.112 \| fine	80.35 \| fine	15.334 \| good	0.646 \| good	4.33 \| good	0.19 \| good
2025-07-30T10:00:00.000Z	67 \| moderate	17.522 \| fine	78.365 \| fine	11.598 \| good	0.64 \| good	4.335 \| good	0.195 \| good
2025-07-30T11:00:00.000Z	69 \| moderate	19.161 \| fine	84.668 \| fine	16.345 \| good	0.634 \| good	4.34 \| good	0.199 \| good
2025-07-30T12:00:00.000Z	73 \| moderate	21.375 \| fine	93.396 \| fine	27.164 \| good	0.628 \| good	4.345 \| good	0.204 \| good
2025-07-30T13:00:00.000Z	75 \| moderate	22.34 \| fine	98.162 \| fine	38.25 \| good	0.624 \| good	4.3 \| good	0.213 \| good
2025-07-30T14:00:00.000Z	77 \| moderate	23.042 \| fine	100.747 \| fine	48.072 \| good	0.62 \| good	4.256 \| good	0.222 \| good
2025-07-30T15:00:00.000Z	79 \| moderate	24.494 \| fine	107.337 \| fine	55.825 \| fine	0.615 \| good	4.212 \| good	0.232 \| good
2025-07-30T16:00:00.000Z	81 \| moderate	24.756 \| fine	108.071 \| fine	60.815 \| fine	0.645 \| good	3.459 \| good	0.232 \| good
2025-07-30T17:00:00.000Z	82 \| moderate	25.837 \| fine	112.081 \| fine	58.016 \| fine	0.674 \| good	2.706 \| good	0.233 \| good
2025-07-30T18:00:00.000Z	82 \| moderate	25.563 \| fine	111.105 \| fine	64.126 \| fine	0.704 \| good	1.953 \| good	0.233 \| good
2025-07-30T19:00:00.000Z	100 \| moderate	24.635 \| fine	107.207 \| fine	70.293 \| fine	0.705 \| good	1.981 \| good	0.224 \| good
2025-07-30T20:00:00.000Z	108 \| sensitive	24.289 \| fine	105.791 \| fine	72.554 \| moderate	0.706 \| good	2.008 \| good	0.214 \| good
2025-07-30T21:00:00.000Z	129 \| sensitive	27.102 \| fine	117.772 \| fine	79.329 \| moderate	0.707 \| good	2.035 \| good	0.205 \| good
2025-07-30T22:00:00.000Z	147 \| sensitive	28.739 \| fine	124.37 \| fine	84.463 \| moderate	0.71 \| good	3.444 \| good	0.213 \| good
2025-07-30T23:00:00.000Z	115 \| sensitive	29.042 \| fine	126.205 \| fine	75.374 \| moderate	0.713 \| good	4.853 \| good	0.222 \| good
2025-07-31T00:00:00.000Z	77 \| moderate	23.366 \| fine	102.57 \| fine	58.443 \| fine	0.716 \| good	6.263 \| good	0.23 \| good
2025-07-31T01:00:00.000Z	73 \| moderate	21.343 \| fine	93.646 \| fine	50.255 \| good	0.763 \| good	7.016 \| good	0.24 \| good
2025-07-31T02:00:00.000Z	69 \| moderate	18.92 \| fine	83.036 \| fine	46.767 \| good	0.81 \| good	7.77 \| good	0.249 \| good
2025-07-31T03:00:00.000Z	66 \| moderate	16.803 \| fine	74.932 \| fine	43.097 \| good	0.858 \| good	8.523 \| good	0.259 \| good
2025-07-31T04:00:00.000Z	60 \| moderate	13.939 \| fine	62.656 \| fine	39.973 \| good	0.913 \| good	9.127 \| good	0.263 \| good
2025-07-31T05:00:00.000Z	58 \| moderate	12.807 \| fine	57.989 \| fine	38.147 \| good	0.969 \| good	9.73 \| good	0.267 \| good
2025-07-31T06:00:00.000Z	56 \| moderate	12.314 \| fine	55.521 \| fine	34.464 \| good	1.024 \| good	10.334 \| good	0.272 \| good
2025-07-31T07:00:00.000Z	56 \| moderate	12.152 \| fine	54.36 \| good	32.755 \| good	1.004 \| good	8.828 \| good	0.255 \| good
2025-07-31T08:00:00.000Z	56 \| moderate	11.975 \| good	53.536 \| good	32.959 \| good	0.984 \| good	7.323 \| good	0.238 \| good
2025-07-31T09:00:00.000Z	58 \| moderate	12.734 \| fine	57.444 \| fine	31.339 \| good	0.964 \| good	5.818 \| good	0.221 \| good
2025-07-31T10:00:00.000Z	60 \| moderate	13.614 \| fine	61.335 \| fine	27.868 \| good	0.912 \| good	5.171 \| good	0.212 \| good
2025-07-31T11:00:00.000Z	62 \| moderate	14.697 \| fine	65.875 \| fine	25.079 \| good	0.861 \| good	4.523 \| good	0.204 \| good
2025-07-31T12:00:00.000Z	75 \| moderate	21.798 \| fine	95.85 \| fine	29.953 \| good	0.81 \| good	3.876 \| good	0.196 \| good
2025-07-31T13:00:00.000Z	75 \| moderate	22.469 \| fine	98.492 \| fine	34.507 \| good	0.845 \| good	3.835 \| good	0.203 \| good
2025-07-31T14:00:00.000Z	75 \| moderate	22.47 \| fine	98.467 \| fine	37.977 \| good	0.879 \| good	3.795 \| good	0.21 \| good
2025-07-31T15:00:00.000Z	77 \| moderate	22.666 \| fine	98.729 \| fine	43.347 \| good	0.913 \| good	3.755 \| good	0.216 \| good
2025-07-31T16:00:00.000Z	75 \| moderate	22.115 \| fine	96.503 \| fine	49.077 \| good	0.833 \| good	3.222 \| good	0.22 \| good
2025-07-31T17:00:00.000Z	75 \| moderate	21.786 \| fine	95.546 \| fine	49.539 \| good	0.753 \| good	2.689 \| good	0.224 \| good
2025-07-31T18:00:00.000Z	73 \| moderate	21.198 \| fine	93.227 \| fine	46.149 \| good	0.672 \| good	2.156 \| good	0.228 \| 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?