What is the current concentration of PM10 in Hartford, Connecticut?

The current PM10 concentration at Hartford, Connecticut is 22.751 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Hartford, Connecticut?

The current sulfur dioxide (SO2) concentration at Hartford, Connecticut is 0.698 ppb.

What is the current concentration of ozone (O3) in Hartford, Connecticut?

The current ozone (O3) concentration at Hartford, Connecticut is 21.055 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Hartford, Connecticut?

The current nitrogen dioxide (NO2) concentration at Hartford, Connecticut is 25.162 ppb.

Hartford, Connecticut live air quality index now

Q: What is the current concentration of PM2.5 in Hartford, Connecticut?

The current PM2.5 concentration at Hartford, Connecticut is 11.264 μg/m3.

Stay updated with real-time air quality in Hartford, 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

Hartford, Connecticut

Last updated: ... (Local time)

Major air pollutants in Hartford, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

11.26 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

22.75 μg/m³

155

255

425

605+

Ozone (O₃)

21.05 ppb

201

201+

Sulfur Dioxide (SO₂)

0.70 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

25.16 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.40 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Hartford, Connecticut

Get Live Pollen Counts

Hartford, Connecticut

Scroll To Air Quality Map

Track live Hartford, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-11T21:00:00.000Z	32 \| good	1.565 \| good	5.903 \| good	35.446 \| good	0.121 \| good	4.319 \| good	0.11 \| good
2025-12-11T22:00:00.000Z	33 \| good	1.499 \| good	5.215 \| good	36.33 \| good	0.151 \| good	4.229 \| good	0.11 \| good
2025-12-11T23:00:00.000Z	32 \| good	1.586 \| good	5.195 \| good	35.385 \| good	0.154 \| good	5.152 \| good	0.11 \| good
2025-12-12T00:00:00.000Z	33 \| good	1.613 \| good	5.142 \| good	35.512 \| good	0.213 \| good	4.1 \| good	0.108 \| good
2025-12-12T01:00:00.000Z	32 \| good	1.64 \| good	4.814 \| good	34.642 \| good	0.155 \| good	5.209 \| good	0.108 \| good
2025-12-12T02:00:00.000Z	32 \| good	1.664 \| good	4.486 \| good	34.73 \| good	0.281 \| good	6.605 \| good	0.106 \| good
2025-12-12T03:00:00.000Z	26 \| good	1.1 \| good	4.795 \| good	28.472 \| good	0.496 \| good	2.309 \| good	0.13 \| good
2025-12-12T04:00:00.000Z	31 \| good	1.824 \| good	3.872 \| good	33.351 \| good	0.191 \| good	6.097 \| good	0.106 \| good
2025-12-12T05:00:00.000Z	31 \| good	1.884 \| good	4.489 \| good	33.124 \| good	0.191 \| good	8.045 \| good	0.106 \| good
2025-12-12T06:00:00.000Z	30 \| good	1.884 \| good	4.489 \| good	32.349 \| good	0.202 \| good	8.053 \| good	0.104 \| good
2025-12-12T07:00:00.000Z	31 \| good	2.161 \| good	5.105 \| good	33.321 \| good	0.202 \| good	9.89 \| good	0.193 \| good
2025-12-12T08:00:00.000Z	31 \| good	2.256 \| good	5.105 \| good	32.8 \| good	0.186 \| good	9.548 \| good	0.192 \| good
2025-12-12T09:00:00.000Z	29 \| good	2.539 \| good	5.433 \| good	30.607 \| good	0.192 \| good	14.054 \| good	0.106 \| good
2025-12-12T10:00:00.000Z	28 \| good	2.447 \| good	5.414 \| good	29.66 \| good	0.192 \| good	9.933 \| good	0.106 \| good
2025-12-12T11:00:00.000Z	25 \| good	2.449 \| good	5.433 \| good	26.86 \| good	0.232 \| good	9.729 \| good	0.196 \| good
2025-12-12T12:00:00.000Z	27 \| good	2.583 \| good	6.722 \| good	28.997 \| good	0.228 \| good	15.768 \| good	0.286 \| good
2025-12-12T13:00:00.000Z	26 \| good	2.583 \| good	6.722 \| good	27.721 \| good	0.199 \| good	15.736 \| good	0.281 \| good
2025-12-12T14:00:00.000Z	25 \| good	3.108 \| good	9.629 \| good	27.037 \| good	0.281 \| good	12.766 \| good	0.286 \| good
2025-12-12T15:00:00.000Z	28 \| good	2.954 \| good	8.705 \| good	30.235 \| good	0.28 \| good	6.457 \| good	0.198 \| good
2025-12-12T16:00:00.000Z	30 \| good	2.867 \| good	8.738 \| good	32.423 \| good	0.267 \| good	6.293 \| good	0.198 \| good
2025-12-12T17:00:00.000Z	31 \| good	2.805 \| good	7.794 \| good	33.684 \| good	0.284 \| good	5.601 \| good	0.198 \| good
2025-12-12T18:00:00.000Z	31 \| good	2.643 \| good	7.122 \| good	34.347 \| good	0.249 \| good	4.323 \| good	0.11 \| good
2025-12-12T19:00:00.000Z	32 \| good	2.454 \| good	7.103 \| good	35.283 \| good	0.288 \| good	3.558 \| good	0.11 \| good
2025-12-12T20:00:00.000Z	31 \| good	1.794 \| good	5.229 \| good	33.837 \| good	0.256 \| good	3.355 \| good	0.115 \| good
2025-12-12T21:00:00.000Z	33 \| good	1.501 \| good	4.879 \| good	35.666 \| good	0.294 \| good	3.657 \| good	0.11 \| good
2025-12-12T22:00:00.000Z	33 \| good	1.501 \| good	4.879 \| good	35.944 \| good	0.221 \| good	3.656 \| good	0.11 \| good
2025-12-12T23:00:00.000Z	31 \| good	1.719 \| good	4.899 \| good	33.907 \| good	0.241 \| good	11.638 \| good	0.292 \| good
2025-12-13T00:00:00.000Z	30 \| good	2.281 \| good	6.736 \| good	32.373 \| good	0.227 \| good	16.758 \| good	0.384 \| good
2025-12-13T01:00:00.000Z	28 \| good	3.212 \| good	10.149 \| good	30.439 \| good	0.266 \| good	24.367 \| good	0.471 \| good
2025-12-13T02:00:00.000Z	26 \| good	3.775 \| good	10.802 \| good	27.907 \| good	0.25 \| good	21.631 \| good	0.467 \| good
2025-12-13T03:00:00.000Z	22 \| good	3.846 \| good	16.578 \| good	13.069 \| good	0.575 \| good	4.069 \| good	0.147 \| good
2025-12-13T04:00:00.000Z	27 \| good	4.026 \| good	11.811 \| good	29.186 \| good	0.277 \| good	18.502 \| good	0.381 \| good
2025-12-13T05:00:00.000Z	22 \| good	4.139 \| good	11.593 \| good	24.419 \| good	0.292 \| good	16.125 \| good	0.293 \| good
2025-12-13T06:00:00.000Z	22 \| good	4.125 \| good	10.36 \| good	23.824 \| good	0.258 \| good	14.758 \| good	0.289 \| good
2025-12-13T07:00:00.000Z	24 \| good	4.125 \| good	10.36 \| good	26.25 \| good	0.236 \| good	14.757 \| good	0.284 \| good
2025-12-13T08:00:00.000Z	22 \| good	4.075 \| good	9.214 \| good	22.284 \| good	0.361 \| good	13.96 \| good	0.197 \| good
2025-12-13T09:00:00.000Z	25 \| good	4.449 \| good	9.296 \| good	26.685 \| good	0.277 \| good	19.897 \| good	0.197 \| good
2025-12-13T10:00:00.000Z	27 \| good	4.632 \| good	9.679 \| good	19.687 \| good	0.258 \| good	21.851 \| good	0.199 \| good
2025-12-13T11:00:00.000Z	27 \| good	4.788 \| good	9.679 \| good	17.288 \| good	0.217 \| good	25.873 \| good	0.293 \| good
2025-12-13T12:00:00.000Z	27 \| good	5.019 \| good	10.66 \| good	15.126 \| good	0.264 \| good	27.079 \| good	0.296 \| good
2025-12-13T13:00:00.000Z	27 \| good	5.019 \| good	10.66 \| good	15.761 \| good	0.3 \| good	27.064 \| good	0.298 \| good
2025-12-13T14:00:00.000Z	33 \| good	5.826 \| good	13.565 \| good	17.826 \| good	0.277 \| good	21.432 \| good	0.296 \| good
2025-12-13T15:00:00.000Z	33 \| good	6.254 \| good	14.728 \| good	18.571 \| good	0.447 \| good	17.54 \| good	0.385 \| good
2025-12-13T16:00:00.000Z	33 \| good	6.231 \| good	16.106 \| good	16.902 \| good	0.791 \| good	14.243 \| good	0.293 \| good
2025-12-13T17:00:00.000Z	38 \| good	7.345 \| good	18.72 \| good	23.309 \| good	0.742 \| good	15.898 \| good	0.296 \| good
2025-12-13T18:00:00.000Z	49 \| good	9.019 \| good	20.13 \| good	19.146 \| good	0.624 \| good	21.36 \| good	0.384 \| good
2025-12-13T19:00:00.000Z	54 \| moderate	10.815 \| good	21.592 \| good	20.237 \| good	0.691 \| good	22.804 \| good	0.386 \| good
2025-12-13T20:00:00.000Z	54 \| moderate	11.264 \| good	22.751 \| good	21.055 \| good	0.698 \| good	25.162 \| good	0.399 \| good
2025-12-13T21:00:00.000Z	58 \| moderate	13.34 \| fine	60.523 \| fine	24.609 \| good	3.174 \| good	12.921 \| good	0.197 \| good
2025-12-13T22:00:00.000Z	60 \| moderate	14.233 \| fine	63.175 \| fine	20.956 \| good	3.104 \| good	14.131 \| good	0.214 \| good
2025-12-13T23:00:00.000Z	64 \| moderate	15.522 \| fine	68.71 \| fine	21.516 \| good	3.034 \| good	15.34 \| good	0.231 \| good
2025-12-14T00:00:00.000Z	62 \| moderate	14.903 \| fine	66.584 \| fine	21.104 \| good	2.964 \| good	16.549 \| good	0.248 \| good
2025-12-14T01:00:00.000Z	60 \| moderate	14.036 \| fine	62.627 \| fine	18.377 \| good	2.946 \| good	15.502 \| good	0.246 \| good
2025-12-14T02:00:00.000Z	62 \| moderate	14.997 \| fine	66.662 \| fine	18.697 \| good	2.928 \| good	14.456 \| good	0.243 \| good
2025-12-14T03:00:00.000Z	62 \| moderate	15.334 \| fine	68.527 \| fine	19.687 \| good	2.91 \| good	13.409 \| good	0.24 \| good
2025-12-14T04:00:00.000Z	66 \| moderate	16.564 \| fine	73.063 \| fine	16.625 \| good	2.984 \| good	12.352 \| good	0.231 \| good
2025-12-14T05:00:00.000Z	66 \| moderate	17 \| fine	75.061 \| fine	15.423 \| good	3.057 \| good	11.295 \| good	0.223 \| good
2025-12-14T06:00:00.000Z	62 \| moderate	14.882 \| fine	66.625 \| fine	17.105 \| good	3.131 \| good	10.238 \| good	0.214 \| good
2025-12-14T07:00:00.000Z	54 \| moderate	11.268 \| good	49.906 \| good	18.482 \| good	2.78 \| good	9.016 \| good	0.207 \| good
2025-12-14T08:00:00.000Z	22 \| good	4.249 \| good	18.596 \| good	20.699 \| good	2.428 \| good	7.793 \| good	0.201 \| good
2025-12-14T09:00:00.000Z	21 \| good	3.45 \| good	14.855 \| good	23.325 \| good	2.077 \| good	6.571 \| good	0.194 \| good
2025-12-14T10:00:00.000Z	23 \| good	2.301 \| good	9.749 \| good	24.96 \| good	1.616 \| good	5.721 \| good	0.19 \| good
2025-12-14T11:00:00.000Z	25 \| good	1.727 \| good	6.992 \| good	27.328 \| good	1.155 \| good	4.872 \| good	0.186 \| good
2025-12-14T12:00:00.000Z	26 \| good	1.95 \| good	7.951 \| good	28.078 \| good	0.694 \| good	4.023 \| good	0.181 \| good
2025-12-14T13:00:00.000Z	29 \| good	2.129 \| good	8.814 \| good	30.987 \| good	0.666 \| good	3.767 \| good	0.177 \| good
2025-12-14T14:00:00.000Z	31 \| good	3.281 \| good	14.775 \| good	33.728 \| good	0.637 \| good	3.512 \| good	0.173 \| good
2025-12-14T15:00:00.000Z	33 \| good	3.206 \| good	13.748 \| good	35.775 \| good	0.609 \| good	3.256 \| good	0.169 \| good
2025-12-14T16:00:00.000Z	34 \| good	2.604 \| good	10.864 \| good	36.72 \| good	0.576 \| good	2.806 \| good	0.166 \| good
2025-12-14T17:00:00.000Z	33 \| good	3.198 \| good	14.075 \| good	36.414 \| good	0.544 \| good	2.356 \| good	0.162 \| good
2025-12-14T18:00:00.000Z	32 \| good	3.843 \| good	16.959 \| good	35.053 \| good	0.512 \| good	1.906 \| good	0.158 \| good
2025-12-14T19:00:00.000Z	33 \| good	3.951 \| good	17.187 \| good	35.585 \| good	0.483 \| good	2.33 \| good	0.16 \| good
2025-12-14T20:00:00.000Z	33 \| good	6.16 \| good	27.264 \| good	35.423 \| good	0.454 \| good	2.754 \| good	0.162 \| good
2025-12-14T21:00:00.000Z	44 \| good	7.516 \| good	33.041 \| good	33.325 \| good	0.425 \| good	3.178 \| good	0.163 \| good
2025-12-14T22:00:00.000Z	32 \| good	5.448 \| good	23.088 \| good	34.989 \| good	0.41 \| good	3.42 \| good	0.165 \| good
2025-12-14T23:00:00.000Z	34 \| good	3.503 \| good	15.787 \| good	36.831 \| good	0.396 \| good	3.662 \| good	0.166 \| good
2025-12-15T00:00:00.000Z	31 \| good	4.825 \| good	20.951 \| good	33.603 \| good	0.381 \| good	3.904 \| good	0.167 \| good
2025-12-15T01:00:00.000Z	30 \| good	4.26 \| good	18.905 \| good	32.464 \| good	0.368 \| good	3.668 \| good	0.164 \| good
2025-12-15T02:00:00.000Z	29 \| good	3.791 \| good	16.797 \| good	31.314 \| good	0.355 \| good	3.432 \| good	0.161 \| good
2025-12-15T03:00:00.000Z	28 \| good	2.509 \| good	10.056 \| good	30.053 \| good	0.341 \| good	3.196 \| good	0.158 \| good
2025-12-15T04:00:00.000Z	27 \| good	2.823 \| good	11.843 \| good	28.958 \| good	0.311 \| good	2.669 \| good	0.152 \| good
2025-12-15T05:00:00.000Z	27 \| good	3.236 \| good	14.056 \| good	28.668 \| good	0.28 \| good	2.141 \| good	0.146 \| good
2025-12-15T06:00:00.000Z	26 \| good	2.21 \| good	9.02 \| good	28.131 \| good	0.25 \| good	1.613 \| good	0.139 \| good
2025-12-15T07:00:00.000Z	24 \| good	3.134 \| good	13.812 \| good	26.414 \| good	0.236 \| good	1.505 \| good	0.139 \| good
2025-12-15T08:00:00.000Z	21 \| good	2.969 \| good	12 \| good	23.274 \| good	0.222 \| good	1.396 \| good	0.139 \| good
2025-12-15T09:00:00.000Z	21 \| good	2.517 \| good	10.067 \| good	23.251 \| good	0.209 \| good	1.287 \| good	0.138 \| good
2025-12-15T10:00:00.000Z	23 \| good	1.398 \| good	5.817 \| good	24.757 \| good	0.24 \| good	1.661 \| good	0.141 \| good
2025-12-15T11:00:00.000Z	23 \| good	0.832 \| good	3.079 \| good	25.158 \| good	0.271 \| good	2.035 \| good	0.144 \| good
2025-12-15T12:00:00.000Z	24 \| good	0.619 \| good	2.061 \| good	25.552 \| good	0.303 \| good	2.409 \| good	0.147 \| good
2025-12-15T13:00:00.000Z	26 \| good	0.514 \| good	2.02 \| good	27.885 \| good	0.317 \| good	2.244 \| good	0.146 \| good
2025-12-15T14:00:00.000Z	30 \| good	0.863 \| good	3.059 \| good	31.724 \| good	0.332 \| good	2.079 \| good	0.145 \| good
2025-12-15T15:00:00.000Z	30 \| good	1.139 \| good	4.837 \| good	32.404 \| good	0.346 \| good	1.914 \| good	0.144 \| good
2025-12-15T16:00:00.000Z	31 \| good	0.637 \| good	2 \| good	33.017 \| good	0.321 \| good	1.747 \| good	0.14 \| good
2025-12-15T17:00:00.000Z	31 \| good	0.133 \| good	0 \| good	33.073 \| good	0.296 \| good	1.581 \| good	0.136 \| good
2025-12-15T18:00:00.000Z	31 \| good	0.37 \| good	1.117 \| good	32.651 \| good	0.271 \| good	1.414 \| good	0.132 \| good
2025-12-15T19:00:00.000Z	32 \| good	0.295 \| good	1.02 \| good	34.934 \| good	0.298 \| good	1.967 \| good	0.135 \| good
2025-12-15T20:00:00.000Z	33 \| good	0.865 \| good	3.105 \| good	35.53 \| good	0.325 \| good	2.52 \| good	0.138 \| good

Hartford

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Hartford, Connecticut air quality map: Track AQI near you

0.38ppm

How accurate is Connecticut, USA air quality data?

Air quality data and pollutant measurements for Connecticut, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Hartford, Connecticut updated?

The air quality for Hartford, Connecticut is updated every hour.

When was the worst air quality at Hartford, Connecticut in the last 24 hrs?

The worst air quality in Hartford, Connecticut in the last 24 hours was observed at 07:00:00 on 2025-12-13.

When was the best air quality at Hartford, Connecticut in the last 24 hrs?

In the last 24 hrs, the best air quality in Hartford, Connecticut was observed at 08:00:00 on 2025-12-13.

What is the current air quality in Hartford, Connecticut?

The current air quality in Hartford, Connecticut is 54, categorized as Moderate based on real-time data.

What pollutant is the most common in Hartford, Connecticut?

The most common pollutant in Hartford, Connecticut is PM2.5.

What should I do if the air quality in Hartford, Connecticut is poor?

If the air quality in Hartford, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Hartford, Connecticut?

The current PM_2.5 concentration at Hartford, Connecticut is 11.264 μg/m³.

What is the current concentration of PM₁₀ in Hartford, Connecticut?

The current PM₁₀ concentration at Hartford, Connecticut is 22.751 μg/m³.

What is the current concentration of carbon monoxide (CO) in Hartford, Connecticut?

The current carbon monoxide (CO) concentration at Hartford, Connecticut is 0.399 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Hartford, Connecticut?

The current sulfur dioxide (SO₂) concentration at Hartford, Connecticut is 0.698 ppb.

What is the current concentration of ozone (O₃) in Hartford, Connecticut?

The current ozone (O₃) concentration at Hartford, Connecticut is 21.055 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Hartford, Connecticut?

The current nitrogen dioxide (NO₂) concentration at Hartford, Connecticut is 25.162 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-11T21:00:00.000Z	32 \| good	1.565 \| good	5.903 \| good	35.446 \| good	0.121 \| good	4.319 \| good	0.11 \| good
2025-12-11T22:00:00.000Z	33 \| good	1.499 \| good	5.215 \| good	36.33 \| good	0.151 \| good	4.229 \| good	0.11 \| good
2025-12-11T23:00:00.000Z	32 \| good	1.586 \| good	5.195 \| good	35.385 \| good	0.154 \| good	5.152 \| good	0.11 \| good
2025-12-12T00:00:00.000Z	33 \| good	1.613 \| good	5.142 \| good	35.512 \| good	0.213 \| good	4.1 \| good	0.108 \| good
2025-12-12T01:00:00.000Z	32 \| good	1.64 \| good	4.814 \| good	34.642 \| good	0.155 \| good	5.209 \| good	0.108 \| good
2025-12-12T02:00:00.000Z	32 \| good	1.664 \| good	4.486 \| good	34.73 \| good	0.281 \| good	6.605 \| good	0.106 \| good
2025-12-12T03:00:00.000Z	26 \| good	1.1 \| good	4.795 \| good	28.472 \| good	0.496 \| good	2.309 \| good	0.13 \| good
2025-12-12T04:00:00.000Z	31 \| good	1.824 \| good	3.872 \| good	33.351 \| good	0.191 \| good	6.097 \| good	0.106 \| good
2025-12-12T05:00:00.000Z	31 \| good	1.884 \| good	4.489 \| good	33.124 \| good	0.191 \| good	8.045 \| good	0.106 \| good
2025-12-12T06:00:00.000Z	30 \| good	1.884 \| good	4.489 \| good	32.349 \| good	0.202 \| good	8.053 \| good	0.104 \| good
2025-12-12T07:00:00.000Z	31 \| good	2.161 \| good	5.105 \| good	33.321 \| good	0.202 \| good	9.89 \| good	0.193 \| good
2025-12-12T08:00:00.000Z	31 \| good	2.256 \| good	5.105 \| good	32.8 \| good	0.186 \| good	9.548 \| good	0.192 \| good
2025-12-12T09:00:00.000Z	29 \| good	2.539 \| good	5.433 \| good	30.607 \| good	0.192 \| good	14.054 \| good	0.106 \| good
2025-12-12T10:00:00.000Z	28 \| good	2.447 \| good	5.414 \| good	29.66 \| good	0.192 \| good	9.933 \| good	0.106 \| good
2025-12-12T11:00:00.000Z	25 \| good	2.449 \| good	5.433 \| good	26.86 \| good	0.232 \| good	9.729 \| good	0.196 \| good
2025-12-12T12:00:00.000Z	27 \| good	2.583 \| good	6.722 \| good	28.997 \| good	0.228 \| good	15.768 \| good	0.286 \| good
2025-12-12T13:00:00.000Z	26 \| good	2.583 \| good	6.722 \| good	27.721 \| good	0.199 \| good	15.736 \| good	0.281 \| good
2025-12-12T14:00:00.000Z	25 \| good	3.108 \| good	9.629 \| good	27.037 \| good	0.281 \| good	12.766 \| good	0.286 \| good
2025-12-12T15:00:00.000Z	28 \| good	2.954 \| good	8.705 \| good	30.235 \| good	0.28 \| good	6.457 \| good	0.198 \| good
2025-12-12T16:00:00.000Z	30 \| good	2.867 \| good	8.738 \| good	32.423 \| good	0.267 \| good	6.293 \| good	0.198 \| good
2025-12-12T17:00:00.000Z	31 \| good	2.805 \| good	7.794 \| good	33.684 \| good	0.284 \| good	5.601 \| good	0.198 \| good
2025-12-12T18:00:00.000Z	31 \| good	2.643 \| good	7.122 \| good	34.347 \| good	0.249 \| good	4.323 \| good	0.11 \| good
2025-12-12T19:00:00.000Z	32 \| good	2.454 \| good	7.103 \| good	35.283 \| good	0.288 \| good	3.558 \| good	0.11 \| good
2025-12-12T20:00:00.000Z	31 \| good	1.794 \| good	5.229 \| good	33.837 \| good	0.256 \| good	3.355 \| good	0.115 \| good
2025-12-12T21:00:00.000Z	33 \| good	1.501 \| good	4.879 \| good	35.666 \| good	0.294 \| good	3.657 \| good	0.11 \| good
2025-12-12T22:00:00.000Z	33 \| good	1.501 \| good	4.879 \| good	35.944 \| good	0.221 \| good	3.656 \| good	0.11 \| good
2025-12-12T23:00:00.000Z	31 \| good	1.719 \| good	4.899 \| good	33.907 \| good	0.241 \| good	11.638 \| good	0.292 \| good
2025-12-13T00:00:00.000Z	30 \| good	2.281 \| good	6.736 \| good	32.373 \| good	0.227 \| good	16.758 \| good	0.384 \| good
2025-12-13T01:00:00.000Z	28 \| good	3.212 \| good	10.149 \| good	30.439 \| good	0.266 \| good	24.367 \| good	0.471 \| good
2025-12-13T02:00:00.000Z	26 \| good	3.775 \| good	10.802 \| good	27.907 \| good	0.25 \| good	21.631 \| good	0.467 \| good
2025-12-13T03:00:00.000Z	22 \| good	3.846 \| good	16.578 \| good	13.069 \| good	0.575 \| good	4.069 \| good	0.147 \| good
2025-12-13T04:00:00.000Z	27 \| good	4.026 \| good	11.811 \| good	29.186 \| good	0.277 \| good	18.502 \| good	0.381 \| good
2025-12-13T05:00:00.000Z	22 \| good	4.139 \| good	11.593 \| good	24.419 \| good	0.292 \| good	16.125 \| good	0.293 \| good
2025-12-13T06:00:00.000Z	22 \| good	4.125 \| good	10.36 \| good	23.824 \| good	0.258 \| good	14.758 \| good	0.289 \| good
2025-12-13T07:00:00.000Z	24 \| good	4.125 \| good	10.36 \| good	26.25 \| good	0.236 \| good	14.757 \| good	0.284 \| good
2025-12-13T08:00:00.000Z	22 \| good	4.075 \| good	9.214 \| good	22.284 \| good	0.361 \| good	13.96 \| good	0.197 \| good
2025-12-13T09:00:00.000Z	25 \| good	4.449 \| good	9.296 \| good	26.685 \| good	0.277 \| good	19.897 \| good	0.197 \| good
2025-12-13T10:00:00.000Z	27 \| good	4.632 \| good	9.679 \| good	19.687 \| good	0.258 \| good	21.851 \| good	0.199 \| good
2025-12-13T11:00:00.000Z	27 \| good	4.788 \| good	9.679 \| good	17.288 \| good	0.217 \| good	25.873 \| good	0.293 \| good
2025-12-13T12:00:00.000Z	27 \| good	5.019 \| good	10.66 \| good	15.126 \| good	0.264 \| good	27.079 \| good	0.296 \| good
2025-12-13T13:00:00.000Z	27 \| good	5.019 \| good	10.66 \| good	15.761 \| good	0.3 \| good	27.064 \| good	0.298 \| good
2025-12-13T14:00:00.000Z	33 \| good	5.826 \| good	13.565 \| good	17.826 \| good	0.277 \| good	21.432 \| good	0.296 \| good
2025-12-13T15:00:00.000Z	33 \| good	6.254 \| good	14.728 \| good	18.571 \| good	0.447 \| good	17.54 \| good	0.385 \| good
2025-12-13T16:00:00.000Z	33 \| good	6.231 \| good	16.106 \| good	16.902 \| good	0.791 \| good	14.243 \| good	0.293 \| good
2025-12-13T17:00:00.000Z	38 \| good	7.345 \| good	18.72 \| good	23.309 \| good	0.742 \| good	15.898 \| good	0.296 \| good
2025-12-13T18:00:00.000Z	49 \| good	9.019 \| good	20.13 \| good	19.146 \| good	0.624 \| good	21.36 \| good	0.384 \| good
2025-12-13T19:00:00.000Z	54 \| moderate	10.815 \| good	21.592 \| good	20.237 \| good	0.691 \| good	22.804 \| good	0.386 \| good
2025-12-13T20:00:00.000Z	54 \| moderate	11.264 \| good	22.751 \| good	21.055 \| good	0.698 \| good	25.162 \| good	0.399 \| good
2025-12-13T21:00:00.000Z	58 \| moderate	13.34 \| fine	60.523 \| fine	24.609 \| good	3.174 \| good	12.921 \| good	0.197 \| good
2025-12-13T22:00:00.000Z	60 \| moderate	14.233 \| fine	63.175 \| fine	20.956 \| good	3.104 \| good	14.131 \| good	0.214 \| good
2025-12-13T23:00:00.000Z	64 \| moderate	15.522 \| fine	68.71 \| fine	21.516 \| good	3.034 \| good	15.34 \| good	0.231 \| good
2025-12-14T00:00:00.000Z	62 \| moderate	14.903 \| fine	66.584 \| fine	21.104 \| good	2.964 \| good	16.549 \| good	0.248 \| good
2025-12-14T01:00:00.000Z	60 \| moderate	14.036 \| fine	62.627 \| fine	18.377 \| good	2.946 \| good	15.502 \| good	0.246 \| good
2025-12-14T02:00:00.000Z	62 \| moderate	14.997 \| fine	66.662 \| fine	18.697 \| good	2.928 \| good	14.456 \| good	0.243 \| good
2025-12-14T03:00:00.000Z	62 \| moderate	15.334 \| fine	68.527 \| fine	19.687 \| good	2.91 \| good	13.409 \| good	0.24 \| good
2025-12-14T04:00:00.000Z	66 \| moderate	16.564 \| fine	73.063 \| fine	16.625 \| good	2.984 \| good	12.352 \| good	0.231 \| good
2025-12-14T05:00:00.000Z	66 \| moderate	17 \| fine	75.061 \| fine	15.423 \| good	3.057 \| good	11.295 \| good	0.223 \| good
2025-12-14T06:00:00.000Z	62 \| moderate	14.882 \| fine	66.625 \| fine	17.105 \| good	3.131 \| good	10.238 \| good	0.214 \| good
2025-12-14T07:00:00.000Z	54 \| moderate	11.268 \| good	49.906 \| good	18.482 \| good	2.78 \| good	9.016 \| good	0.207 \| good
2025-12-14T08:00:00.000Z	22 \| good	4.249 \| good	18.596 \| good	20.699 \| good	2.428 \| good	7.793 \| good	0.201 \| good
2025-12-14T09:00:00.000Z	21 \| good	3.45 \| good	14.855 \| good	23.325 \| good	2.077 \| good	6.571 \| good	0.194 \| good
2025-12-14T10:00:00.000Z	23 \| good	2.301 \| good	9.749 \| good	24.96 \| good	1.616 \| good	5.721 \| good	0.19 \| good
2025-12-14T11:00:00.000Z	25 \| good	1.727 \| good	6.992 \| good	27.328 \| good	1.155 \| good	4.872 \| good	0.186 \| good
2025-12-14T12:00:00.000Z	26 \| good	1.95 \| good	7.951 \| good	28.078 \| good	0.694 \| good	4.023 \| good	0.181 \| good
2025-12-14T13:00:00.000Z	29 \| good	2.129 \| good	8.814 \| good	30.987 \| good	0.666 \| good	3.767 \| good	0.177 \| good
2025-12-14T14:00:00.000Z	31 \| good	3.281 \| good	14.775 \| good	33.728 \| good	0.637 \| good	3.512 \| good	0.173 \| good
2025-12-14T15:00:00.000Z	33 \| good	3.206 \| good	13.748 \| good	35.775 \| good	0.609 \| good	3.256 \| good	0.169 \| good
2025-12-14T16:00:00.000Z	34 \| good	2.604 \| good	10.864 \| good	36.72 \| good	0.576 \| good	2.806 \| good	0.166 \| good
2025-12-14T17:00:00.000Z	33 \| good	3.198 \| good	14.075 \| good	36.414 \| good	0.544 \| good	2.356 \| good	0.162 \| good
2025-12-14T18:00:00.000Z	32 \| good	3.843 \| good	16.959 \| good	35.053 \| good	0.512 \| good	1.906 \| good	0.158 \| good
2025-12-14T19:00:00.000Z	33 \| good	3.951 \| good	17.187 \| good	35.585 \| good	0.483 \| good	2.33 \| good	0.16 \| good
2025-12-14T20:00:00.000Z	33 \| good	6.16 \| good	27.264 \| good	35.423 \| good	0.454 \| good	2.754 \| good	0.162 \| good
2025-12-14T21:00:00.000Z	44 \| good	7.516 \| good	33.041 \| good	33.325 \| good	0.425 \| good	3.178 \| good	0.163 \| good
2025-12-14T22:00:00.000Z	32 \| good	5.448 \| good	23.088 \| good	34.989 \| good	0.41 \| good	3.42 \| good	0.165 \| good
2025-12-14T23:00:00.000Z	34 \| good	3.503 \| good	15.787 \| good	36.831 \| good	0.396 \| good	3.662 \| good	0.166 \| good
2025-12-15T00:00:00.000Z	31 \| good	4.825 \| good	20.951 \| good	33.603 \| good	0.381 \| good	3.904 \| good	0.167 \| good
2025-12-15T01:00:00.000Z	30 \| good	4.26 \| good	18.905 \| good	32.464 \| good	0.368 \| good	3.668 \| good	0.164 \| good
2025-12-15T02:00:00.000Z	29 \| good	3.791 \| good	16.797 \| good	31.314 \| good	0.355 \| good	3.432 \| good	0.161 \| good
2025-12-15T03:00:00.000Z	28 \| good	2.509 \| good	10.056 \| good	30.053 \| good	0.341 \| good	3.196 \| good	0.158 \| good
2025-12-15T04:00:00.000Z	27 \| good	2.823 \| good	11.843 \| good	28.958 \| good	0.311 \| good	2.669 \| good	0.152 \| good
2025-12-15T05:00:00.000Z	27 \| good	3.236 \| good	14.056 \| good	28.668 \| good	0.28 \| good	2.141 \| good	0.146 \| good
2025-12-15T06:00:00.000Z	26 \| good	2.21 \| good	9.02 \| good	28.131 \| good	0.25 \| good	1.613 \| good	0.139 \| good
2025-12-15T07:00:00.000Z	24 \| good	3.134 \| good	13.812 \| good	26.414 \| good	0.236 \| good	1.505 \| good	0.139 \| good
2025-12-15T08:00:00.000Z	21 \| good	2.969 \| good	12 \| good	23.274 \| good	0.222 \| good	1.396 \| good	0.139 \| good
2025-12-15T09:00:00.000Z	21 \| good	2.517 \| good	10.067 \| good	23.251 \| good	0.209 \| good	1.287 \| good	0.138 \| good
2025-12-15T10:00:00.000Z	23 \| good	1.398 \| good	5.817 \| good	24.757 \| good	0.24 \| good	1.661 \| good	0.141 \| good
2025-12-15T11:00:00.000Z	23 \| good	0.832 \| good	3.079 \| good	25.158 \| good	0.271 \| good	2.035 \| good	0.144 \| good
2025-12-15T12:00:00.000Z	24 \| good	0.619 \| good	2.061 \| good	25.552 \| good	0.303 \| good	2.409 \| good	0.147 \| good
2025-12-15T13:00:00.000Z	26 \| good	0.514 \| good	2.02 \| good	27.885 \| good	0.317 \| good	2.244 \| good	0.146 \| good
2025-12-15T14:00:00.000Z	30 \| good	0.863 \| good	3.059 \| good	31.724 \| good	0.332 \| good	2.079 \| good	0.145 \| good
2025-12-15T15:00:00.000Z	30 \| good	1.139 \| good	4.837 \| good	32.404 \| good	0.346 \| good	1.914 \| good	0.144 \| good
2025-12-15T16:00:00.000Z	31 \| good	0.637 \| good	2 \| good	33.017 \| good	0.321 \| good	1.747 \| good	0.14 \| good
2025-12-15T17:00:00.000Z	31 \| good	0.133 \| good	0 \| good	33.073 \| good	0.296 \| good	1.581 \| good	0.136 \| good
2025-12-15T18:00:00.000Z	31 \| good	0.37 \| good	1.117 \| good	32.651 \| good	0.271 \| good	1.414 \| good	0.132 \| good
2025-12-15T19:00:00.000Z	32 \| good	0.295 \| good	1.02 \| good	34.934 \| good	0.298 \| good	1.967 \| good	0.135 \| good
2025-12-15T20:00:00.000Z	33 \| good	0.865 \| good	3.105 \| good	35.53 \| good	0.325 \| good	2.52 \| good	0.138 \| good

Hartford, Connecticut live air quality index now

Major air pollutants in Hartford, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Hartford, Connecticut air quality forecast and history

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Hartford, Connecticut air quality map: Track AQI near you

Air quality in nearby cities

East Hartford, Connecticut

West Hartford, Connecticut

Wethersfield, Connecticut

Bloomfield, Connecticut

Newington, Connecticut

Windsor, Connecticut

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Frequently asked questions

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What is the current concentration of PM2.5 in Hartford, Connecticut?

What is the current concentration of PM10 in Hartford, Connecticut?

What is the current concentration of carbon monoxide (CO) in Hartford, Connecticut?

What is the current concentration of sulfur dioxide (SO2) in Hartford, Connecticut?

What is the current concentration of ozone (O3) in Hartford, Connecticut?

What is the current concentration of nitrogen dioxide (NO2) in Hartford, Connecticut?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the current concentration of PM_2.5 in Hartford, Connecticut?

What is the current concentration of PM₁₀ in Hartford, Connecticut?

What is the current concentration of sulfur dioxide (SO₂) in Hartford, Connecticut?

What is the current concentration of ozone (O₃) in Hartford, Connecticut?

What is the current concentration of nitrogen dioxide (NO₂) in Hartford, Connecticut?