What are the current PM10 levels at Killingly, Connecticut?

The current PM10 levels in Killingly, Connecticut are 12.272 μg/m3.

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

The current sulfur dioxide (SO2) levels in Killingly, Connecticut are 0.218 ppb.

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

The current ozone (O3) levels at Killingly, Connecticut is 33.045 ppm.

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

The current nitrogen dioxide (NO2) levels at Killingly, Connecticut is 5.781 ppb.

Real-time air quality index in Killingly, Connecticut today

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

The measured PM2.5 levels in Killingly, Connecticut at present are 3.014 μg/m3.

Stay updated with real-time air quality in Killingly, 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

Killingly, Connecticut

Last updated: ... (Local time)

Common air pollutants in Killingly, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.01 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

12.27 μg/m³

155

255

425

605+

Ozone (O₃)

33.05 ppb

201

201+

Sulfur Dioxide (SO₂)

0.22 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.78 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

Please contact us for custom requests

Killingly, Connecticut

Scroll To Air Quality Map

Track live Killingly, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-05T03:00:00.000Z	44 \| good	7.613 \| good	33.641 \| good	44.465 \| good	1.338 \| good	20.937 \| good	0.363 \| good
2026-03-05T04:00:00.000Z	33 \| good	6.226 \| good	26.09 \| good	30.958 \| good	0.82 \| good	26.44 \| good	0.522 \| good
2026-03-05T05:00:00.000Z	38 \| good	7.414 \| good	23.526 \| good	28.281 \| good	0.669 \| good	24.622 \| good	0.63 \| good
2026-03-05T06:00:00.000Z	44 \| good	8.214 \| good	37.851 \| good	23.648 \| good	0.792 \| good	20.442 \| good	0.621 \| good
2026-03-05T07:00:00.000Z	44 \| good	8.461 \| good	35.12 \| good	19.985 \| good	0.789 \| good	25.76 \| good	0.621 \| good
2026-03-05T08:00:00.000Z	49 \| good	9.272 \| good	18.421 \| good	19.947 \| good	0.752 \| good	23.49 \| good	0.475 \| good
2026-03-05T09:00:00.000Z	44 \| good	8.043 \| good	17.148 \| good	11.044 \| good	0.656 \| good	19.244 \| good	0.619 \| good
2026-03-05T10:00:00.000Z	33 \| good	6.426 \| good	15.216 \| good	18.029 \| good	0.627 \| good	20.927 \| good	0.771 \| good
2026-03-05T11:00:00.000Z	44 \| good	7.77 \| good	20.824 \| good	11.987 \| good	0.721 \| good	19.124 \| good	0.928 \| good
2026-03-05T12:00:00.000Z	52 \| moderate	9.533 \| good	27.255 \| good	15.443 \| good	0.84 \| good	18.807 \| good	1.061 \| good
2026-03-05T13:00:00.000Z	44 \| good	8.224 \| good	39.101 \| good	19.883 \| good	0.831 \| good	23.579 \| good	0.829 \| good
2026-03-05T14:00:00.000Z	54 \| moderate	10.924 \| good	40.383 \| good	18.344 \| good	1.009 \| good	29.089 \| good	1.227 \| good
2026-03-05T15:00:00.000Z	38 \| good	6.861 \| good	17.777 \| good	9.304 \| good	1.015 \| good	27.265 \| good	1.174 \| good
2026-03-05T16:00:00.000Z	54 \| moderate	11.133 \| good	38.872 \| good	8.533 \| good	0.921 \| good	35.449 \| good	0.93 \| good
2026-03-05T17:00:00.000Z	58 \| moderate	12.969 \| fine	40.656 \| good	13.254 \| good	0.575 \| good	29.078 \| good	0.771 \| good
2026-03-05T18:00:00.000Z	44 \| good	8.136 \| good	47.13 \| good	25.174 \| good	0.406 \| good	29.528 \| good	0.648 \| good
2026-03-05T19:00:00.000Z	44 \| good	7.79 \| good	37.541 \| good	19.3 \| good	0.339 \| good	22.437 \| good	0.443 \| good
2026-03-05T20:00:00.000Z	54 \| moderate	10.627 \| good	35.059 \| good	20.708 \| good	0.342 \| good	18.956 \| good	0.342 \| good
2026-03-05T21:00:00.000Z	52 \| moderate	10.204 \| good	25.478 \| good	22.959 \| good	0.306 \| good	14.275 \| good	0.317 \| good
2026-03-05T22:00:00.000Z	49 \| good	8.808 \| good	40.551 \| good	29.66 \| good	0.264 \| good	7.804 \| good	0.266 \| good
2026-03-05T23:00:00.000Z	44 \| good	7.984 \| good	23.779 \| good	31.446 \| good	0.248 \| good	5.829 \| good	0.226 \| good
2026-03-06T00:00:00.000Z	52 \| moderate	9.99 \| good	29.514 \| good	26.643 \| good	0.219 \| good	6.467 \| good	0.187 \| good
2026-03-06T01:00:00.000Z	38 \| good	7.4 \| good	24.13 \| good	35.645 \| good	0.247 \| good	4.543 \| good	0.2 \| good
2026-03-06T02:00:00.000Z	44 \| good	8.154 \| good	38.778 \| good	33.37 \| good	0.202 \| good	5.547 \| good	0.187 \| good
2026-03-06T03:00:00.000Z	38 \| good	3.202 \| good	14 \| good	40.577 \| good	0.327 \| good	3.995 \| good	0.169 \| good
2026-03-06T04:00:00.000Z	32 \| good	5.043 \| good	17.255 \| good	34.541 \| good	0.202 \| good	5.085 \| good	0.187 \| good
2026-03-06T05:00:00.000Z	32 \| good	3.908 \| good	14.291 \| good	34.579 \| good	0.202 \| good	4.66 \| good	0.187 \| good
2026-03-06T06:00:00.000Z	34 \| good	3.606 \| good	11.456 \| good	36.527 \| good	0.202 \| good	4.053 \| good	0.187 \| good
2026-03-06T07:00:00.000Z	33 \| good	3.666 \| good	15.794 \| good	36.265 \| good	0.202 \| good	3.765 \| good	0.187 \| good
2026-03-06T08:00:00.000Z	34 \| good	2.484 \| good	11.193 \| good	37.432 \| good	0.258 \| good	3.811 \| good	0.173 \| good
2026-03-06T09:00:00.000Z	37 \| good	2.254 \| good	11.557 \| good	39.504 \| good	0.219 \| good	3.04 \| good	0.165 \| good
2026-03-06T10:00:00.000Z	37 \| good	1.154 \| good	7.254 \| good	39.946 \| good	0.219 \| good	4.772 \| good	0.187 \| good
2026-03-06T11:00:00.000Z	37 \| good	1.44 \| good	5.209 \| good	39.922 \| good	0.202 \| good	7.108 \| good	0.213 \| good
2026-03-06T12:00:00.000Z	37 \| good	2.01 \| good	4.86 \| good	39.529 \| good	0.234 \| good	8.562 \| good	0.24 \| good
2026-03-06T13:00:00.000Z	34 \| good	1.507 \| good	3.883 \| good	37.292 \| good	0.234 \| good	5.824 \| good	0.203 \| good
2026-03-06T14:00:00.000Z	34 \| good	1.115 \| good	3.302 \| good	37.243 \| good	0.218 \| good	9.091 \| good	0.237 \| good
2026-03-06T15:00:00.000Z	33 \| good	2.272 \| good	8.7 \| good	35.519 \| good	0.247 \| good	10.179 \| good	0.314 \| good
2026-03-06T16:00:00.000Z	33 \| good	3.825 \| good	18.182 \| good	35.797 \| good	0.218 \| good	8.865 \| good	0.262 \| good
2026-03-06T17:00:00.000Z	33 \| good	3.991 \| good	16.965 \| good	36.048 \| good	0.218 \| good	8.678 \| good	0.235 \| good
2026-03-06T18:00:00.000Z	32 \| good	3.719 \| good	12.828 \| good	35.095 \| good	0.247 \| good	9.254 \| good	0.26 \| good
2026-03-06T19:00:00.000Z	33 \| good	3.751 \| good	19.407 \| good	35.957 \| good	0.247 \| good	8.726 \| good	0.286 \| good
2026-03-06T20:00:00.000Z	31 \| good	3.597 \| good	12.377 \| good	34.486 \| good	0.247 \| good	7.714 \| good	0.262 \| good
2026-03-06T21:00:00.000Z	31 \| good	2.749 \| good	14.402 \| good	34.122 \| good	0.247 \| good	7.065 \| good	0.237 \| good
2026-03-06T22:00:00.000Z	31 \| good	3.359 \| good	19.543 \| good	33.377 \| good	0.218 \| good	5.285 \| good	0.212 \| good
2026-03-06T23:00:00.000Z	33 \| good	2.713 \| good	10.448 \| good	36.367 \| good	0.202 \| good	7.884 \| good	0.212 \| good
2026-03-07T00:00:00.000Z	31 \| good	3.32 \| good	18.882 \| good	33.455 \| good	0.219 \| good	7.113 \| good	0.237 \| good
2026-03-07T01:00:00.000Z	31 \| good	3.014 \| good	12.272 \| good	33.045 \| good	0.218 \| good	5.781 \| good	0.237 \| good
2026-03-07T02:00:00.000Z	29 \| good	3.43 \| good	26.1 \| good	30.508 \| good	0.218 \| good	6.765 \| good	0.262 \| good
2026-03-07T02:00:00.000Z	31 \| good	3.014 \| good	12.272 \| good	33.045 \| good	0.218 \| good	5.781 \| good	0.237 \| good
2026-03-07T03:00:00.000Z	29 \| good	1.717 \| good	7.067 \| good	31.232 \| good	0.454 \| good	8.036 \| good	0.196 \| good
2026-03-07T04:00:00.000Z	28 \| good	1.249 \| good	4.967 \| good	30.306 \| good	0.415 \| good	7.72 \| good	0.194 \| good
2026-03-07T05:00:00.000Z	28 \| good	1.17 \| good	4.774 \| good	30.354 \| good	0.376 \| good	7.403 \| good	0.193 \| good
2026-03-07T06:00:00.000Z	29 \| good	1.591 \| good	6.774 \| good	31.069 \| good	0.338 \| good	7.086 \| good	0.191 \| good
2026-03-07T07:00:00.000Z	28 \| good	2.34 \| good	9.856 \| good	29.953 \| good	0.331 \| good	6.671 \| good	0.189 \| good
2026-03-07T08:00:00.000Z	26 \| good	4.136 \| good	18.089 \| good	27.766 \| good	0.325 \| good	6.256 \| good	0.186 \| good
2026-03-07T09:00:00.000Z	27 \| good	4.822 \| good	21.043 \| good	26.236 \| good	0.318 \| good	5.841 \| good	0.184 \| good
2026-03-07T10:00:00.000Z	27 \| good	5.48 \| good	23.454 \| good	25.789 \| good	0.315 \| good	5.649 \| good	0.182 \| good
2026-03-07T11:00:00.000Z	26 \| good	3.778 \| good	16.311 \| good	27.534 \| good	0.312 \| good	5.458 \| good	0.18 \| good
2026-03-07T12:00:00.000Z	25 \| good	3.138 \| good	13.896 \| good	26.834 \| good	0.308 \| good	5.266 \| good	0.177 \| good
2026-03-07T13:00:00.000Z	25 \| good	4.351 \| good	18.951 \| good	26.878 \| good	0.304 \| good	4.702 \| good	0.173 \| good
2026-03-07T14:00:00.000Z	27 \| good	3.564 \| good	15.856 \| good	28.988 \| good	0.3 \| good	4.138 \| good	0.168 \| good
2026-03-07T15:00:00.000Z	28 \| good	4.405 \| good	19.107 \| good	30.016 \| good	0.296 \| good	3.575 \| good	0.164 \| good
2026-03-07T16:00:00.000Z	30 \| good	4.237 \| good	18.76 \| good	32.431 \| good	0.287 \| good	3.411 \| good	0.163 \| good
2026-03-07T17:00:00.000Z	31 \| good	4.123 \| good	18.009 \| good	33.879 \| good	0.278 \| good	3.247 \| good	0.162 \| good
2026-03-07T18:00:00.000Z	31 \| good	4.044 \| good	17.921 \| good	32.616 \| good	0.268 \| good	3.083 \| good	0.161 \| good
2026-03-07T19:00:00.000Z	29 \| good	4.108 \| good	18.009 \| good	31.254 \| good	0.248 \| good	3.395 \| good	0.162 \| good
2026-03-07T20:00:00.000Z	27 \| good	3.987 \| good	17.198 \| good	29.27 \| good	0.228 \| good	3.706 \| good	0.162 \| good
2026-03-07T21:00:00.000Z	28 \| good	2.821 \| good	11.793 \| good	29.788 \| good	0.208 \| good	4.017 \| good	0.163 \| good
2026-03-07T22:00:00.000Z	29 \| good	2.999 \| good	12 \| good	31.214 \| good	0.201 \| good	4.225 \| good	0.163 \| good
2026-03-07T23:00:00.000Z	28 \| good	2.958 \| good	12.292 \| good	29.775 \| good	0.193 \| good	4.433 \| good	0.164 \| good
2026-03-08T00:00:00.000Z	31 \| good	4.048 \| good	17.834 \| good	33.285 \| good	0.186 \| good	4.64 \| good	0.165 \| good
2026-03-08T01:00:00.000Z	31 \| good	4.803 \| good	20.953 \| good	33.698 \| good	0.194 \| good	4.539 \| good	0.157 \| good
2026-03-08T02:00:00.000Z	33 \| good	5.824 \| good	24.963 \| good	31.904 \| good	0.201 \| good	4.438 \| good	0.15 \| good
2026-03-08T03:00:00.000Z	38 \| good	7.022 \| good	31.009 \| good	28.496 \| good	0.209 \| good	4.337 \| good	0.143 \| good
2026-03-08T04:00:00.000Z	49 \| good	9.422 \| good	41.88 \| good	29.593 \| good	0.206 \| good	4.225 \| good	0.134 \| good
2026-03-08T05:00:00.000Z	54 \| moderate	11.311 \| good	49.968 \| good	27.988 \| good	0.203 \| good	4.114 \| good	0.125 \| good
2026-03-08T06:00:00.000Z	49 \| good	8.868 \| good	10.214 \| good	25.24 \| good	0.199 \| good	3.981 \| good	0.117 \| good
2026-03-08T07:00:00.000Z	52 \| moderate	10.18 \| good	45.028 \| good	27.914 \| good	0.289 \| good	4.104 \| good	0.117 \| good
2026-03-08T08:00:00.000Z	52 \| moderate	10.431 \| good	46.221 \| good	26.509 \| good	0.377 \| good	4.204 \| good	0.117 \| good
2026-03-08T09:00:00.000Z	56 \| moderate	12.167 \| fine	54.693 \| good	22.613 \| good	0.465 \| good	4.305 \| good	0.117 \| good
2026-03-08T10:00:00.000Z	58 \| moderate	12.538 \| fine	56.638 \| fine	21.784 \| good	0.603 \| good	4.541 \| good	0.121 \| good
2026-03-08T11:00:00.000Z	56 \| moderate	11.717 \| good	51.772 \| good	20.154 \| good	0.741 \| good	4.777 \| good	0.124 \| good
2026-03-08T12:00:00.000Z	22 \| good	2.816 \| good	2.885 \| good	23.955 \| good	0.875 \| good	5.027 \| good	0.128 \| good
2026-03-08T13:00:00.000Z	27 \| good	4.511 \| good	4.553 \| good	23.47 \| good	1.037 \| good	5.599 \| good	0.139 \| good
2026-03-08T14:00:00.000Z	38 \| good	6.948 \| good	7.006 \| good	22.985 \| good	1.198 \| good	6.171 \| good	0.15 \| good
2026-03-08T15:00:00.000Z	38 \| good	7.337 \| good	7.41 \| good	22.499 \| good	1.36 \| good	6.743 \| good	0.161 \| good
2026-03-08T16:00:00.000Z	38 \| good	6.798 \| good	6.904 \| good	23.631 \| good	1.308 \| good	6.414 \| good	0.162 \| good
2026-03-08T17:00:00.000Z	33 \| good	6.073 \| good	6.299 \| good	24.763 \| good	1.256 \| good	6.084 \| good	0.162 \| good
2026-03-08T18:00:00.000Z	33 \| good	5.81 \| good	6.187 \| good	25.895 \| good	1.205 \| good	5.755 \| good	0.162 \| good
2026-03-08T19:00:00.000Z	33 \| good	5.708 \| good	6.207 \| good	27.435 \| good	1.083 \| good	5.774 \| good	0.168 \| good
2026-03-08T20:00:00.000Z	27 \| good	5.441 \| good	6.03 \| good	28.974 \| good	0.962 \| good	5.793 \| good	0.174 \| good
2026-03-08T21:00:00.000Z	33 \| good	5.602 \| good	6.244 \| good	30.514 \| good	0.84 \| good	5.812 \| good	0.179 \| good
2026-03-08T22:00:00.000Z	33 \| good	6.484 \| good	7.153 \| good	29.039 \| good	0.806 \| good	7.781 \| good	0.198 \| good
2026-03-08T23:00:00.000Z	44 \| good	7.875 \| good	8.545 \| good	27.564 \| good	0.773 \| good	9.75 \| good	0.218 \| good
2026-03-09T00:00:00.000Z	49 \| good	8.775 \| good	9.422 \| good	26.09 \| good	0.739 \| good	11.719 \| good	0.237 \| good
2026-03-09T01:00:00.000Z	49 \| good	8.552 \| good	9.146 \| good	27.904 \| good	0.755 \| good	10.555 \| good	0.233 \| good
2026-03-09T02:00:00.000Z	44 \| good	8.216 \| good	8.751 \| good	29.718 \| good	0.77 \| good	9.392 \| good	0.229 \| good

Killingly

Empower business decisions with accurate air quality data

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

0.24ppm

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

Air quality levels in US

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

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

Frequently asked questions

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

Air quality data for Killingly, Connecticut is updated on an hourly basis.

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

The worst air quality in Killingly, Connecticut was recorded at 02:00:00 on 2026-03-06.

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

The best air quality in Killingly, Connecticut was recorded at 01:00:00 on 2026-03-07.

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

The real-time air quality index in Killingly, Connecticut is 31, currently categorized as Good.

Which pollutant is found most often in Killingly, Connecticut?

The most common pollutant in Killingly, Connecticut is O3.

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

If the air quality in Killingly, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Killingly, Connecticut?

The measured PM_2.5 levels in Killingly, Connecticut at present are 3.014 μg/m³.

What are the current PM₁₀ levels at Killingly, Connecticut?

The current PM₁₀ levels in Killingly, Connecticut are 12.272 μg/m³.

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

The current carbon monoxide (CO) level in Killingly, Connecticut is 0.237 ppm.

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

The current sulfur dioxide (SO₂) levels in Killingly, Connecticut are 0.218 ppb.

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

The current ozone (O₃) levels at Killingly, Connecticut is 33.045 ppm.

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

The current nitrogen dioxide (NO₂) levels at Killingly, Connecticut is 5.781 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions