What is the sulfur dioxide (SO2) level in Old Saybrook, Connecticut at the moment?

Currently, Old Saybrook, Connecticut has a sulfur dioxide (SO2) concentration of 0.265 ppb.

What is the ozone (O3) level in Old Saybrook, Connecticut at the moment?

The current ozone (O3) level in Old Saybrook, Connecticut at the moment is 24.746 ppm.

What is the nitrogen dioxide (NO2) level in Old Saybrook, Connecticut at the moment?

Nitrogen dioxide (NO2) level in Old Saybrook, Connecticut at the moment is 6.416 ppb.

Live air quality index in Old Saybrook, Connecticut today

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

Stay updated with real-time air quality in Old Saybrook, 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

Old Saybrook, Connecticut

Last updated: ... (Local time)

Major air pollutants in Old Saybrook, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

10.14 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

56.74 μg/m³

155

255

425

605+

Ozone (O₃)

33.23 ppb

201

201+

Sulfur Dioxide (SO₂)

0.20 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

15.36 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Old Saybrook, Connecticut

Get Live Pollen Counts

Old Saybrook, Connecticut

Scroll To Air Quality Map

Track live Old Saybrook, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-29T08:00:00.000Z	60 \| moderate	14.253 \| fine	63.284 \| fine	31.944 \| good	0.297 \| good	5.651 \| good	0.364 \| good
2025-07-29T09:00:00.000Z	62 \| moderate	14.788 \| fine	24.681 \| good	30.653 \| good	0.247 \| good	8.087 \| good	0.308 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	14.498 \| fine	54.004 \| good	29.782 \| good	0.251 \| good	9.631 \| good	0.366 \| good
2025-07-29T11:00:00.000Z	64 \| moderate	15.744 \| fine	38.796 \| good	22.513 \| good	0.243 \| good	10.499 \| good	0.401 \| good
2025-07-29T12:00:00.000Z	62 \| moderate	14.605 \| fine	28.468 \| good	26.945 \| good	0.241 \| good	12.907 \| good	0.499 \| good
2025-07-29T13:00:00.000Z	60 \| moderate	13.61 \| fine	35.586 \| good	24.537 \| good	0.312 \| good	12.402 \| good	0.501 \| good
2025-07-29T14:00:00.000Z	58 \| moderate	13.341 \| fine	35.331 \| good	21.9 \| good	0.435 \| good	17.084 \| good	0.394 \| good
2025-07-29T15:00:00.000Z	62 \| moderate	15.031 \| fine	35.869 \| good	26.29 \| good	0.747 \| good	21.945 \| good	0.4 \| good
2025-07-29T16:00:00.000Z	60 \| moderate	13.866 \| fine	28.472 \| good	37.544 \| good	0.687 \| good	13.494 \| good	0.358 \| good
2025-07-29T17:00:00.000Z	62 \| moderate	14.891 \| fine	68.743 \| fine	42.725 \| good	0.501 \| good	8.488 \| good	0.358 \| good
2025-07-29T18:00:00.000Z	60 \| moderate	13.886 \| fine	40.271 \| good	53.979 \| good	0.43 \| good	11.495 \| good	0.471 \| good
2025-07-29T19:00:00.000Z	87 \| moderate	15.154 \| fine	42.21 \| good	66.254 \| fine	0.396 \| good	11.618 \| good	0.318 \| good
2025-07-29T20:00:00.000Z	90 \| moderate	14.279 \| fine	24.306 \| good	67.022 \| fine	0.501 \| good	21.894 \| good	0.3 \| good
2025-07-29T21:00:00.000Z	87 \| moderate	12.005 \| good	29.673 \| good	65.84 \| fine	0.543 \| good	22.089 \| good	0.266 \| good
2025-07-29T22:00:00.000Z	97 \| moderate	10.963 \| good	50.156 \| good	68.657 \| fine	0.394 \| good	10.219 \| good	0.266 \| good
2025-07-29T23:00:00.000Z	90 \| moderate	11.72 \| good	61.648 \| fine	66.571 \| fine	0.438 \| good	3.752 \| good	0.266 \| good
2025-07-30T00:00:00.000Z	122 \| sensitive	14.65 \| fine	68.027 \| fine	76.887 \| moderate	0.459 \| good	4.314 \| good	0.283 \| good
2025-07-30T01:00:00.000Z	108 \| sensitive	13.837 \| fine	52.867 \| good	73.271 \| moderate	0.443 \| good	5.006 \| good	0.25 \| good
2025-07-30T02:00:00.000Z	77 \| moderate	13.065 \| fine	39.725 \| good	63.49 \| fine	0.449 \| good	5.585 \| good	0.316 \| good
2025-07-30T03:00:00.000Z	79 \| moderate	23.824 \| fine	104.062 \| fine	45.617 \| good	0.845 \| good	7.76 \| good	0.283 \| good
2025-07-30T04:00:00.000Z	58 \| moderate	13.16 \| fine	40.458 \| good	53.887 \| good	0.392 \| good	13.576 \| good	0.29 \| good
2025-07-30T05:00:00.000Z	58 \| moderate	12.8 \| fine	59.945 \| fine	51.626 \| good	0.497 \| good	17.966 \| good	0.277 \| good
2025-07-30T06:00:00.000Z	60 \| moderate	14.356 \| fine	32.864 \| good	44.553 \| good	0.368 \| good	14.001 \| good	0.255 \| good
2025-07-30T07:00:00.000Z	62 \| moderate	14.947 \| fine	53.461 \| good	35.57 \| good	0.248 \| good	12.646 \| good	0.241 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	15.019 \| fine	66.319 \| fine	30.57 \| good	0.295 \| good	11.244 \| good	0.241 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	12.83 \| fine	59.8 \| fine	36.087 \| good	0.215 \| good	12.52 \| good	0.227 \| good
2025-07-30T10:00:00.000Z	58 \| moderate	12.56 \| fine	57.12 \| fine	26.878 \| good	0.192 \| good	9.308 \| good	0.301 \| good
2025-07-30T11:00:00.000Z	54 \| moderate	10.98 \| good	54.003 \| good	31.592 \| good	0.196 \| good	18.473 \| good	0.294 \| good
2025-07-30T12:00:00.000Z	52 \| moderate	10.137 \| good	46.409 \| good	25.406 \| good	0.212 \| good	15.046 \| good	0.316 \| good
2025-07-30T13:00:00.000Z	49 \| good	8.974 \| good	31.995 \| good	23.461 \| good	0.239 \| good	8.635 \| good	0.283 \| good
2025-07-30T14:00:00.000Z	52 \| moderate	10.171 \| good	21.356 \| good	29.722 \| good	0.289 \| good	7.896 \| good	0.254 \| good
2025-07-30T15:00:00.000Z	52 \| moderate	10.094 \| good	42.07 \| good	29.135 \| good	0.366 \| good	8.617 \| good	0.313 \| good
2025-07-30T16:00:00.000Z	52 \| moderate	9.791 \| good	41.706 \| good	36.361 \| good	0.397 \| good	8.954 \| good	0.507 \| good
2025-07-30T17:00:00.000Z	52 \| moderate	10.486 \| good	30.522 \| good	45.716 \| good	0.393 \| good	9.261 \| good	0.272 \| good
2025-07-30T18:00:00.000Z	54 \| moderate	11.351 \| good	46.563 \| good	53.007 \| good	0.305 \| good	8.941 \| good	0.243 \| good
2025-07-30T19:00:00.000Z	80 \| moderate	10.905 \| good	44.721 \| good	63.804 \| fine	0.312 \| good	13.637 \| good	0.227 \| good
2025-07-30T20:00:00.000Z	64 \| moderate	8.687 \| good	38.258 \| good	58.562 \| fine	0.256 \| good	9.745 \| good	0.227 \| good
2025-07-30T21:00:00.000Z	105 \| sensitive	8.114 \| good	39.547 \| good	72.308 \| moderate	0.536 \| good	20 \| good	0.24 \| good
2025-07-30T22:00:00.000Z	93 \| moderate	9.458 \| good	45.434 \| good	67.715 \| fine	0.363 \| good	8.062 \| good	0.313 \| good
2025-07-30T23:00:00.000Z	64 \| moderate	8.174 \| good	45.438 \| good	59.172 \| fine	0.218 \| good	14.123 \| good	0.369 \| good
2025-07-31T00:00:00.000Z	74 \| moderate	8.521 \| good	34.527 \| good	61.68 \| fine	0.265 \| good	12.048 \| good	0.335 \| good
2025-07-31T01:00:00.000Z	93 \| moderate	11.07 \| good	72.767 \| fine	67.688 \| fine	0.288 \| good	10.641 \| good	0.335 \| good
2025-07-31T02:00:00.000Z	47 \| good	7.908 \| good	34.29 \| good	50.728 \| good	0.399 \| good	6.704 \| good	0.319 \| good
2025-07-31T03:00:00.000Z	61 \| moderate	8.791 \| good	17.329 \| good	58.103 \| fine	0.302 \| good	5.484 \| good	0.296 \| good
2025-07-31T04:00:00.000Z	51 \| moderate	8.731 \| good	19.518 \| good	55.372 \| fine	0.267 \| good	4.913 \| good	0.264 \| good
2025-07-31T05:00:00.000Z	52 \| moderate	9.616 \| good	47.277 \| good	48.211 \| good	1.05 \| good	11.068 \| good	0.263 \| good
2025-07-31T06:00:00.000Z	57 \| moderate	11.84 \| good	66.506 \| fine	34.294 \| good	1.311 \| good	12.793 \| good	0.341 \| good
2025-07-31T07:00:00.000Z	52 \| moderate	10.14 \| good	56.743 \| fine	33.232 \| good	0.205 \| good	15.363 \| good	0.209 \| good
2025-07-31T07:00:00.000Z	52 \| moderate	10.14 \| good	56.743 \| fine	33.232 \| good	0.205 \| good	15.363 \| good	0.209 \| good
2025-07-28T16:00:00.000Z	73 \| moderate	21.125 \| fine	93.292 \| fine	56.752 \| fine	0.481 \| good	3.94 \| good	0.284 \| good
2025-07-28T17:00:00.000Z	74 \| moderate	19.931 \| fine	88.203 \| fine	61.74 \| fine	0.414 \| good	3.995 \| good	0.311 \| good
2025-07-28T18:00:00.000Z	74 \| moderate	19.995 \| fine	87.927 \| fine	61.534 \| fine	0.346 \| good	4.05 \| good	0.337 \| good
2025-07-28T19:00:00.000Z	69 \| moderate	19.307 \| fine	85.278 \| fine	57.32 \| fine	0.278 \| good	4.814 \| good	0.352 \| good
2025-07-28T20:00:00.000Z	69 \| moderate	18.906 \| fine	83.215 \| fine	59.973 \| fine	0.211 \| good	5.578 \| good	0.366 \| good
2025-07-28T21:00:00.000Z	67 \| moderate	17.957 \| fine	79.361 \| fine	59.942 \| fine	0.144 \| good	6.343 \| good	0.38 \| good
2025-07-28T22:00:00.000Z	67 \| moderate	18.461 \| fine	81.21 \| fine	59.563 \| fine	0.184 \| good	7.843 \| good	0.371 \| good
2025-07-28T23:00:00.000Z	69 \| moderate	19.444 \| fine	85.392 \| fine	56.614 \| fine	0.225 \| good	9.343 \| good	0.362 \| good
2025-07-29T00:00:00.000Z	62 \| moderate	15.149 \| fine	67.469 \| fine	52.273 \| good	0.265 \| good	10.843 \| good	0.353 \| good
2025-07-29T01:00:00.000Z	62 \| moderate	14.849 \| fine	65.739 \| fine	46.626 \| good	0.352 \| good	9.702 \| good	0.335 \| good
2025-07-29T02:00:00.000Z	62 \| moderate	15.113 \| fine	67.412 \| fine	42.455 \| good	0.44 \| good	8.561 \| good	0.316 \| good
2025-07-29T03:00:00.000Z	64 \| moderate	16.052 \| fine	71.461 \| fine	42.446 \| good	0.527 \| good	7.42 \| good	0.298 \| good
2025-07-29T04:00:00.000Z	64 \| moderate	16.403 \| fine	72.867 \| fine	40.249 \| good	0.599 \| good	7.511 \| good	0.297 \| good
2025-07-29T05:00:00.000Z	64 \| moderate	16.384 \| fine	73.157 \| fine	38.453 \| good	0.671 \| good	7.602 \| good	0.295 \| good
2025-07-29T06:00:00.000Z	64 \| moderate	16.112 \| fine	71.464 \| fine	36.894 \| good	0.744 \| good	7.694 \| good	0.293 \| good
2025-07-29T07:00:00.000Z	64 \| moderate	16.453 \| fine	73.261 \| fine	34.814 \| good	0.745 \| good	7.634 \| good	0.296 \| good
2025-07-29T08:00:00.000Z	67 \| moderate	18.117 \| fine	79.665 \| fine	33.172 \| good	0.747 \| good	7.574 \| good	0.299 \| good
2025-07-29T09:00:00.000Z	71 \| moderate	19.653 \| fine	86.926 \| fine	32.693 \| good	0.749 \| good	7.515 \| good	0.302 \| good
2025-07-29T10:00:00.000Z	69 \| moderate	19.347 \| fine	85.182 \| fine	28.638 \| good	0.709 \| good	6.844 \| good	0.297 \| good
2025-07-29T11:00:00.000Z	71 \| moderate	20.223 \| fine	89.024 \| fine	29.514 \| good	0.67 \| good	6.174 \| good	0.293 \| good
2025-07-29T12:00:00.000Z	77 \| moderate	22.592 \| fine	99.164 \| fine	36.781 \| good	0.63 \| good	5.503 \| good	0.289 \| good
2025-07-29T13:00:00.000Z	79 \| moderate	23.604 \| fine	103.577 \| fine	43.62 \| good	0.626 \| good	5.172 \| good	0.292 \| good
2025-07-29T14:00:00.000Z	79 \| moderate	24.5 \| fine	106.384 \| fine	51.798 \| good	0.622 \| good	4.841 \| good	0.295 \| good
2025-07-29T15:00:00.000Z	82 \| moderate	25.853 \| fine	112.626 \| fine	62.998 \| fine	0.617 \| good	4.51 \| good	0.298 \| good
2025-07-29T16:00:00.000Z	108 \| sensitive	27.299 \| fine	118.629 \| fine	73.386 \| moderate	0.641 \| good	4.301 \| good	0.314 \| good
2025-07-29T17:00:00.000Z	126 \| sensitive	28.384 \| fine	122.591 \| fine	78.483 \| moderate	0.665 \| good	4.092 \| good	0.331 \| good
2025-07-29T18:00:00.000Z	133 \| sensitive	27.539 \| fine	119.608 \| fine	79.596 \| moderate	0.689 \| good	3.882 \| good	0.347 \| good
2025-07-29T19:00:00.000Z	126 \| sensitive	26.063 \| fine	113.595 \| fine	78.207 \| moderate	0.771 \| good	4.432 \| good	0.374 \| good
2025-07-29T20:00:00.000Z	101 \| sensitive	24.058 \| fine	105.711 \| fine	70.675 \| fine	0.853 \| good	4.981 \| good	0.401 \| good
2025-07-29T21:00:00.000Z	80 \| moderate	22.389 \| fine	97.995 \| fine	64.328 \| fine	0.935 \| good	5.53 \| good	0.428 \| good
2025-07-29T22:00:00.000Z	84 \| moderate	23.219 \| fine	102.105 \| fine	64.645 \| fine	1.005 \| good	7.608 \| good	0.441 \| good
2025-07-29T23:00:00.000Z	90 \| moderate	23.335 \| fine	101.66 \| fine	67.033 \| fine	1.075 \| good	9.686 \| good	0.454 \| good
2025-07-30T00:00:00.000Z	74 \| moderate	17.881 \| fine	78.926 \| fine	61.904 \| fine	1.145 \| good	11.764 \| good	0.467 \| good
2025-07-30T01:00:00.000Z	66 \| moderate	16.645 \| fine	73.71 \| fine	54.256 \| good	1.133 \| good	10.683 \| good	0.437 \| good
2025-07-30T02:00:00.000Z	64 \| moderate	16.034 \| fine	71.634 \| fine	45.146 \| good	1.12 \| good	9.603 \| good	0.407 \| good
2025-07-30T03:00:00.000Z	64 \| moderate	15.864 \| fine	70.693 \| fine	32.955 \| good	1.108 \| good	8.522 \| good	0.376 \| good
2025-07-30T04:00:00.000Z	60 \| moderate	13.598 \| fine	61.297 \| fine	28.9 \| good	1.024 \| good	8.135 \| good	0.344 \| good
2025-07-30T05:00:00.000Z	58 \| moderate	12.599 \| fine	57.281 \| fine	28.559 \| good	0.939 \| good	7.747 \| good	0.312 \| good
2025-07-30T06:00:00.000Z	56 \| moderate	12.47 \| fine	56.028 \| fine	26.459 \| good	0.855 \| good	7.359 \| good	0.28 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.101 \| fine	63.135 \| fine	25.91 \| good	0.798 \| good	6.822 \| good	0.261 \| good
2025-07-30T08:00:00.000Z	66 \| moderate	16.606 \| fine	73.295 \| fine	27.314 \| good	0.741 \| good	6.285 \| good	0.243 \| good
2025-07-30T09:00:00.000Z	66 \| moderate	17.144 \| fine	76.877 \| fine	25.89 \| good	0.684 \| good	5.748 \| good	0.224 \| good
2025-07-30T10:00:00.000Z	64 \| moderate	16.487 \| fine	73.035 \| fine	25.683 \| good	0.694 \| good	6.153 \| good	0.236 \| good
2025-07-30T11:00:00.000Z	67 \| moderate	17.765 \| fine	78.796 \| fine	26.712 \| good	0.705 \| good	6.559 \| good	0.248 \| good
2025-07-30T12:00:00.000Z	75 \| moderate	21.997 \| fine	97.002 \| fine	32.485 \| good	0.716 \| good	6.965 \| good	0.26 \| good
2025-07-30T13:00:00.000Z	81 \| moderate	24.689 \| fine	107.494 \| fine	37.174 \| good	0.749 \| good	7.851 \| good	0.297 \| good
2025-07-30T14:00:00.000Z	77 \| moderate	23.436 \| fine	102.86 \| fine	44.263 \| good	0.782 \| good	8.737 \| good	0.334 \| good
2025-07-30T15:00:00.000Z	75 \| moderate	22.493 \| fine	99.069 \| fine	49.571 \| good	0.815 \| good	9.623 \| good	0.372 \| good

Old Saybrook

Get reliable air quality data to drive your business

Old Saybrook, Connecticut air quality map: Stay updated on AQI near you

0.28ppm

How accurate is Connecticut, USA air quality data?

Air quality and pollutant data for Connecticut, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Old Saybrook, Connecticut?

The air quality information for Old Saybrook, Connecticut is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Old Saybrook, Connecticut at its worst?

In the past 24 hours, the air quality in Old Saybrook, Connecticut was at its worst at 06:00:00 on 2025-07-27.

When did Old Saybrook, Connecticut experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Old Saybrook, Connecticut was observed at 02:00:00 on 2025-07-28.

What is the AQI in Old Saybrook, Connecticut right now?

As of now, the AQI in Old Saybrook, Connecticut is 62, indicating Moderate conditions.

What is the most common type of pollution in Old Saybrook, Connecticut?

Old Saybrook, Connecticut air has the highest levels of PM2.5.

What should I do in case of poor air quality in Old Saybrook, Connecticut?

Poor air quality in Old Saybrook, Connecticut means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Old Saybrook, Connecticut at the moment?

PM_2.5 levels in Old Saybrook, Connecticut are currently 15.273 μg/m³.

What is the PM₁₀ level in Old Saybrook, Connecticut at the moment?

The PM₁₀ concentration in Old Saybrook, Connecticut is 48.97 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Old Saybrook, Connecticut at the moment?

The current carbon monoxide (CO) concentration in Old Saybrook, Connecticut is 0.268 ppm.

What is the sulfur dioxide (SO₂) level in Old Saybrook, Connecticut at the moment?

Currently, Old Saybrook, Connecticut has a sulfur dioxide (SO₂) concentration of 0.265 ppb.

What is the ozone (O₃) level in Old Saybrook, Connecticut at the moment?

The current ozone (O₃) level in Old Saybrook, Connecticut at the moment is 24.746 ppm.

What is the nitrogen dioxide (NO₂) level in Old Saybrook, Connecticut at the moment?

Nitrogen dioxide (NO₂) level in Old Saybrook, Connecticut at the moment is 6.416 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-29T08:00:00.000Z	60 \| moderate	14.253 \| fine	63.284 \| fine	31.944 \| good	0.297 \| good	5.651 \| good	0.364 \| good
2025-07-29T09:00:00.000Z	62 \| moderate	14.788 \| fine	24.681 \| good	30.653 \| good	0.247 \| good	8.087 \| good	0.308 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	14.498 \| fine	54.004 \| good	29.782 \| good	0.251 \| good	9.631 \| good	0.366 \| good
2025-07-29T11:00:00.000Z	64 \| moderate	15.744 \| fine	38.796 \| good	22.513 \| good	0.243 \| good	10.499 \| good	0.401 \| good
2025-07-29T12:00:00.000Z	62 \| moderate	14.605 \| fine	28.468 \| good	26.945 \| good	0.241 \| good	12.907 \| good	0.499 \| good
2025-07-29T13:00:00.000Z	60 \| moderate	13.61 \| fine	35.586 \| good	24.537 \| good	0.312 \| good	12.402 \| good	0.501 \| good
2025-07-29T14:00:00.000Z	58 \| moderate	13.341 \| fine	35.331 \| good	21.9 \| good	0.435 \| good	17.084 \| good	0.394 \| good
2025-07-29T15:00:00.000Z	62 \| moderate	15.031 \| fine	35.869 \| good	26.29 \| good	0.747 \| good	21.945 \| good	0.4 \| good
2025-07-29T16:00:00.000Z	60 \| moderate	13.866 \| fine	28.472 \| good	37.544 \| good	0.687 \| good	13.494 \| good	0.358 \| good
2025-07-29T17:00:00.000Z	62 \| moderate	14.891 \| fine	68.743 \| fine	42.725 \| good	0.501 \| good	8.488 \| good	0.358 \| good
2025-07-29T18:00:00.000Z	60 \| moderate	13.886 \| fine	40.271 \| good	53.979 \| good	0.43 \| good	11.495 \| good	0.471 \| good
2025-07-29T19:00:00.000Z	87 \| moderate	15.154 \| fine	42.21 \| good	66.254 \| fine	0.396 \| good	11.618 \| good	0.318 \| good
2025-07-29T20:00:00.000Z	90 \| moderate	14.279 \| fine	24.306 \| good	67.022 \| fine	0.501 \| good	21.894 \| good	0.3 \| good
2025-07-29T21:00:00.000Z	87 \| moderate	12.005 \| good	29.673 \| good	65.84 \| fine	0.543 \| good	22.089 \| good	0.266 \| good
2025-07-29T22:00:00.000Z	97 \| moderate	10.963 \| good	50.156 \| good	68.657 \| fine	0.394 \| good	10.219 \| good	0.266 \| good
2025-07-29T23:00:00.000Z	90 \| moderate	11.72 \| good	61.648 \| fine	66.571 \| fine	0.438 \| good	3.752 \| good	0.266 \| good
2025-07-30T00:00:00.000Z	122 \| sensitive	14.65 \| fine	68.027 \| fine	76.887 \| moderate	0.459 \| good	4.314 \| good	0.283 \| good
2025-07-30T01:00:00.000Z	108 \| sensitive	13.837 \| fine	52.867 \| good	73.271 \| moderate	0.443 \| good	5.006 \| good	0.25 \| good
2025-07-30T02:00:00.000Z	77 \| moderate	13.065 \| fine	39.725 \| good	63.49 \| fine	0.449 \| good	5.585 \| good	0.316 \| good
2025-07-30T03:00:00.000Z	79 \| moderate	23.824 \| fine	104.062 \| fine	45.617 \| good	0.845 \| good	7.76 \| good	0.283 \| good
2025-07-30T04:00:00.000Z	58 \| moderate	13.16 \| fine	40.458 \| good	53.887 \| good	0.392 \| good	13.576 \| good	0.29 \| good
2025-07-30T05:00:00.000Z	58 \| moderate	12.8 \| fine	59.945 \| fine	51.626 \| good	0.497 \| good	17.966 \| good	0.277 \| good
2025-07-30T06:00:00.000Z	60 \| moderate	14.356 \| fine	32.864 \| good	44.553 \| good	0.368 \| good	14.001 \| good	0.255 \| good
2025-07-30T07:00:00.000Z	62 \| moderate	14.947 \| fine	53.461 \| good	35.57 \| good	0.248 \| good	12.646 \| good	0.241 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	15.019 \| fine	66.319 \| fine	30.57 \| good	0.295 \| good	11.244 \| good	0.241 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	12.83 \| fine	59.8 \| fine	36.087 \| good	0.215 \| good	12.52 \| good	0.227 \| good
2025-07-30T10:00:00.000Z	58 \| moderate	12.56 \| fine	57.12 \| fine	26.878 \| good	0.192 \| good	9.308 \| good	0.301 \| good
2025-07-30T11:00:00.000Z	54 \| moderate	10.98 \| good	54.003 \| good	31.592 \| good	0.196 \| good	18.473 \| good	0.294 \| good
2025-07-30T12:00:00.000Z	52 \| moderate	10.137 \| good	46.409 \| good	25.406 \| good	0.212 \| good	15.046 \| good	0.316 \| good
2025-07-30T13:00:00.000Z	49 \| good	8.974 \| good	31.995 \| good	23.461 \| good	0.239 \| good	8.635 \| good	0.283 \| good
2025-07-30T14:00:00.000Z	52 \| moderate	10.171 \| good	21.356 \| good	29.722 \| good	0.289 \| good	7.896 \| good	0.254 \| good
2025-07-30T15:00:00.000Z	52 \| moderate	10.094 \| good	42.07 \| good	29.135 \| good	0.366 \| good	8.617 \| good	0.313 \| good
2025-07-30T16:00:00.000Z	52 \| moderate	9.791 \| good	41.706 \| good	36.361 \| good	0.397 \| good	8.954 \| good	0.507 \| good
2025-07-30T17:00:00.000Z	52 \| moderate	10.486 \| good	30.522 \| good	45.716 \| good	0.393 \| good	9.261 \| good	0.272 \| good
2025-07-30T18:00:00.000Z	54 \| moderate	11.351 \| good	46.563 \| good	53.007 \| good	0.305 \| good	8.941 \| good	0.243 \| good
2025-07-30T19:00:00.000Z	80 \| moderate	10.905 \| good	44.721 \| good	63.804 \| fine	0.312 \| good	13.637 \| good	0.227 \| good
2025-07-30T20:00:00.000Z	64 \| moderate	8.687 \| good	38.258 \| good	58.562 \| fine	0.256 \| good	9.745 \| good	0.227 \| good
2025-07-30T21:00:00.000Z	105 \| sensitive	8.114 \| good	39.547 \| good	72.308 \| moderate	0.536 \| good	20 \| good	0.24 \| good
2025-07-30T22:00:00.000Z	93 \| moderate	9.458 \| good	45.434 \| good	67.715 \| fine	0.363 \| good	8.062 \| good	0.313 \| good
2025-07-30T23:00:00.000Z	64 \| moderate	8.174 \| good	45.438 \| good	59.172 \| fine	0.218 \| good	14.123 \| good	0.369 \| good
2025-07-31T00:00:00.000Z	74 \| moderate	8.521 \| good	34.527 \| good	61.68 \| fine	0.265 \| good	12.048 \| good	0.335 \| good
2025-07-31T01:00:00.000Z	93 \| moderate	11.07 \| good	72.767 \| fine	67.688 \| fine	0.288 \| good	10.641 \| good	0.335 \| good
2025-07-31T02:00:00.000Z	47 \| good	7.908 \| good	34.29 \| good	50.728 \| good	0.399 \| good	6.704 \| good	0.319 \| good
2025-07-31T03:00:00.000Z	61 \| moderate	8.791 \| good	17.329 \| good	58.103 \| fine	0.302 \| good	5.484 \| good	0.296 \| good
2025-07-31T04:00:00.000Z	51 \| moderate	8.731 \| good	19.518 \| good	55.372 \| fine	0.267 \| good	4.913 \| good	0.264 \| good
2025-07-31T05:00:00.000Z	52 \| moderate	9.616 \| good	47.277 \| good	48.211 \| good	1.05 \| good	11.068 \| good	0.263 \| good
2025-07-31T06:00:00.000Z	57 \| moderate	11.84 \| good	66.506 \| fine	34.294 \| good	1.311 \| good	12.793 \| good	0.341 \| good
2025-07-31T07:00:00.000Z	52 \| moderate	10.14 \| good	56.743 \| fine	33.232 \| good	0.205 \| good	15.363 \| good	0.209 \| good
2025-07-31T07:00:00.000Z	52 \| moderate	10.14 \| good	56.743 \| fine	33.232 \| good	0.205 \| good	15.363 \| good	0.209 \| good
2025-07-28T16:00:00.000Z	73 \| moderate	21.125 \| fine	93.292 \| fine	56.752 \| fine	0.481 \| good	3.94 \| good	0.284 \| good
2025-07-28T17:00:00.000Z	74 \| moderate	19.931 \| fine	88.203 \| fine	61.74 \| fine	0.414 \| good	3.995 \| good	0.311 \| good
2025-07-28T18:00:00.000Z	74 \| moderate	19.995 \| fine	87.927 \| fine	61.534 \| fine	0.346 \| good	4.05 \| good	0.337 \| good
2025-07-28T19:00:00.000Z	69 \| moderate	19.307 \| fine	85.278 \| fine	57.32 \| fine	0.278 \| good	4.814 \| good	0.352 \| good
2025-07-28T20:00:00.000Z	69 \| moderate	18.906 \| fine	83.215 \| fine	59.973 \| fine	0.211 \| good	5.578 \| good	0.366 \| good
2025-07-28T21:00:00.000Z	67 \| moderate	17.957 \| fine	79.361 \| fine	59.942 \| fine	0.144 \| good	6.343 \| good	0.38 \| good
2025-07-28T22:00:00.000Z	67 \| moderate	18.461 \| fine	81.21 \| fine	59.563 \| fine	0.184 \| good	7.843 \| good	0.371 \| good
2025-07-28T23:00:00.000Z	69 \| moderate	19.444 \| fine	85.392 \| fine	56.614 \| fine	0.225 \| good	9.343 \| good	0.362 \| good
2025-07-29T00:00:00.000Z	62 \| moderate	15.149 \| fine	67.469 \| fine	52.273 \| good	0.265 \| good	10.843 \| good	0.353 \| good
2025-07-29T01:00:00.000Z	62 \| moderate	14.849 \| fine	65.739 \| fine	46.626 \| good	0.352 \| good	9.702 \| good	0.335 \| good
2025-07-29T02:00:00.000Z	62 \| moderate	15.113 \| fine	67.412 \| fine	42.455 \| good	0.44 \| good	8.561 \| good	0.316 \| good
2025-07-29T03:00:00.000Z	64 \| moderate	16.052 \| fine	71.461 \| fine	42.446 \| good	0.527 \| good	7.42 \| good	0.298 \| good
2025-07-29T04:00:00.000Z	64 \| moderate	16.403 \| fine	72.867 \| fine	40.249 \| good	0.599 \| good	7.511 \| good	0.297 \| good
2025-07-29T05:00:00.000Z	64 \| moderate	16.384 \| fine	73.157 \| fine	38.453 \| good	0.671 \| good	7.602 \| good	0.295 \| good
2025-07-29T06:00:00.000Z	64 \| moderate	16.112 \| fine	71.464 \| fine	36.894 \| good	0.744 \| good	7.694 \| good	0.293 \| good
2025-07-29T07:00:00.000Z	64 \| moderate	16.453 \| fine	73.261 \| fine	34.814 \| good	0.745 \| good	7.634 \| good	0.296 \| good
2025-07-29T08:00:00.000Z	67 \| moderate	18.117 \| fine	79.665 \| fine	33.172 \| good	0.747 \| good	7.574 \| good	0.299 \| good
2025-07-29T09:00:00.000Z	71 \| moderate	19.653 \| fine	86.926 \| fine	32.693 \| good	0.749 \| good	7.515 \| good	0.302 \| good
2025-07-29T10:00:00.000Z	69 \| moderate	19.347 \| fine	85.182 \| fine	28.638 \| good	0.709 \| good	6.844 \| good	0.297 \| good
2025-07-29T11:00:00.000Z	71 \| moderate	20.223 \| fine	89.024 \| fine	29.514 \| good	0.67 \| good	6.174 \| good	0.293 \| good
2025-07-29T12:00:00.000Z	77 \| moderate	22.592 \| fine	99.164 \| fine	36.781 \| good	0.63 \| good	5.503 \| good	0.289 \| good
2025-07-29T13:00:00.000Z	79 \| moderate	23.604 \| fine	103.577 \| fine	43.62 \| good	0.626 \| good	5.172 \| good	0.292 \| good
2025-07-29T14:00:00.000Z	79 \| moderate	24.5 \| fine	106.384 \| fine	51.798 \| good	0.622 \| good	4.841 \| good	0.295 \| good
2025-07-29T15:00:00.000Z	82 \| moderate	25.853 \| fine	112.626 \| fine	62.998 \| fine	0.617 \| good	4.51 \| good	0.298 \| good
2025-07-29T16:00:00.000Z	108 \| sensitive	27.299 \| fine	118.629 \| fine	73.386 \| moderate	0.641 \| good	4.301 \| good	0.314 \| good
2025-07-29T17:00:00.000Z	126 \| sensitive	28.384 \| fine	122.591 \| fine	78.483 \| moderate	0.665 \| good	4.092 \| good	0.331 \| good
2025-07-29T18:00:00.000Z	133 \| sensitive	27.539 \| fine	119.608 \| fine	79.596 \| moderate	0.689 \| good	3.882 \| good	0.347 \| good
2025-07-29T19:00:00.000Z	126 \| sensitive	26.063 \| fine	113.595 \| fine	78.207 \| moderate	0.771 \| good	4.432 \| good	0.374 \| good
2025-07-29T20:00:00.000Z	101 \| sensitive	24.058 \| fine	105.711 \| fine	70.675 \| fine	0.853 \| good	4.981 \| good	0.401 \| good
2025-07-29T21:00:00.000Z	80 \| moderate	22.389 \| fine	97.995 \| fine	64.328 \| fine	0.935 \| good	5.53 \| good	0.428 \| good
2025-07-29T22:00:00.000Z	84 \| moderate	23.219 \| fine	102.105 \| fine	64.645 \| fine	1.005 \| good	7.608 \| good	0.441 \| good
2025-07-29T23:00:00.000Z	90 \| moderate	23.335 \| fine	101.66 \| fine	67.033 \| fine	1.075 \| good	9.686 \| good	0.454 \| good
2025-07-30T00:00:00.000Z	74 \| moderate	17.881 \| fine	78.926 \| fine	61.904 \| fine	1.145 \| good	11.764 \| good	0.467 \| good
2025-07-30T01:00:00.000Z	66 \| moderate	16.645 \| fine	73.71 \| fine	54.256 \| good	1.133 \| good	10.683 \| good	0.437 \| good
2025-07-30T02:00:00.000Z	64 \| moderate	16.034 \| fine	71.634 \| fine	45.146 \| good	1.12 \| good	9.603 \| good	0.407 \| good
2025-07-30T03:00:00.000Z	64 \| moderate	15.864 \| fine	70.693 \| fine	32.955 \| good	1.108 \| good	8.522 \| good	0.376 \| good
2025-07-30T04:00:00.000Z	60 \| moderate	13.598 \| fine	61.297 \| fine	28.9 \| good	1.024 \| good	8.135 \| good	0.344 \| good
2025-07-30T05:00:00.000Z	58 \| moderate	12.599 \| fine	57.281 \| fine	28.559 \| good	0.939 \| good	7.747 \| good	0.312 \| good
2025-07-30T06:00:00.000Z	56 \| moderate	12.47 \| fine	56.028 \| fine	26.459 \| good	0.855 \| good	7.359 \| good	0.28 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.101 \| fine	63.135 \| fine	25.91 \| good	0.798 \| good	6.822 \| good	0.261 \| good
2025-07-30T08:00:00.000Z	66 \| moderate	16.606 \| fine	73.295 \| fine	27.314 \| good	0.741 \| good	6.285 \| good	0.243 \| good
2025-07-30T09:00:00.000Z	66 \| moderate	17.144 \| fine	76.877 \| fine	25.89 \| good	0.684 \| good	5.748 \| good	0.224 \| good
2025-07-30T10:00:00.000Z	64 \| moderate	16.487 \| fine	73.035 \| fine	25.683 \| good	0.694 \| good	6.153 \| good	0.236 \| good
2025-07-30T11:00:00.000Z	67 \| moderate	17.765 \| fine	78.796 \| fine	26.712 \| good	0.705 \| good	6.559 \| good	0.248 \| good
2025-07-30T12:00:00.000Z	75 \| moderate	21.997 \| fine	97.002 \| fine	32.485 \| good	0.716 \| good	6.965 \| good	0.26 \| good
2025-07-30T13:00:00.000Z	81 \| moderate	24.689 \| fine	107.494 \| fine	37.174 \| good	0.749 \| good	7.851 \| good	0.297 \| good
2025-07-30T14:00:00.000Z	77 \| moderate	23.436 \| fine	102.86 \| fine	44.263 \| good	0.782 \| good	8.737 \| good	0.334 \| good
2025-07-30T15:00:00.000Z	75 \| moderate	22.493 \| fine	99.069 \| fine	49.571 \| good	0.815 \| good	9.623 \| good	0.372 \| good

Live air quality index in Old Saybrook, Connecticut today

Major air pollutants in Old Saybrook, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Old Saybrook, Connecticut air quality map: Stay updated on AQI near you

Air quality in nearby cities

Clinton, Connecticut

East Lyme, Connecticut

Madison, Connecticut

Waterford, Connecticut

New London, Connecticut

Guilford, Connecticut

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Frequently asked questions

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What is the carbon monoxide (CO) level in Old Saybrook, Connecticut at the moment?

What is the sulfur dioxide (SO2) level in Old Saybrook, Connecticut at the moment?

What is the ozone (O3) level in Old Saybrook, Connecticut at the moment?

What is the nitrogen dioxide (NO2) level in Old Saybrook, Connecticut at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Old Saybrook, Connecticut at the moment?

What is the PM₁₀ level in Old Saybrook, Connecticut at the moment?

What is the sulfur dioxide (SO₂) level in Old Saybrook, Connecticut at the moment?

What is the ozone (O₃) level in Old Saybrook, Connecticut at the moment?

What is the nitrogen dioxide (NO₂) level in Old Saybrook, Connecticut at the moment?