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

The current PM10 concentration at Hartford, Connecticut is 25.061 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Hartford, Connecticut is 0.406 ppb.

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

The current ozone (O3) concentration at Hartford, Connecticut is 37.083 ppm.

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

The current nitrogen dioxide (NO2) concentration at Hartford, Connecticut is 11.946 ppb.

Hartford, Connecticut live air quality index now

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

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)

11.52 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.34 μg/m³

155

255

425

605+

Ozone (O₃)

21.34 ppb

201

201+

Sulfur Dioxide (SO₂)

0.18 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

15.45 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 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
2025-07-28T12:00:00.000Z	73 \| moderate	20.937 \| fine	30.347 \| good	12.944 \| good	0.198 \| good	10.875 \| good	0.202 \| good
2025-07-28T13:00:00.000Z	67 \| moderate	17.593 \| fine	26.318 \| good	20.239 \| good	0.211 \| good	7.937 \| good	0.201 \| good
2025-07-28T14:00:00.000Z	67 \| moderate	17.583 \| fine	26.265 \| good	15.807 \| good	0.325 \| good	4.158 \| good	0.201 \| good
2025-07-28T15:00:00.000Z	60 \| moderate	13.699 \| fine	22.263 \| good	25.083 \| good	0.225 \| good	4.155 \| good	0.201 \| good
2025-07-28T16:00:00.000Z	58 \| moderate	12.917 \| fine	21.176 \| good	36.978 \| good	0.206 \| good	4.794 \| good	0.2 \| good
2025-07-28T17:00:00.000Z	58 \| moderate	13.078 \| fine	20.158 \| good	37.166 \| good	0.227 \| good	4.393 \| good	0.2 \| good
2025-07-28T18:00:00.000Z	58 \| moderate	13.048 \| fine	20.146 \| good	41.987 \| good	0.384 \| good	4.499 \| good	0.2 \| good
2025-07-28T19:00:00.000Z	58 \| moderate	12.727 \| fine	19.055 \| good	44.08 \| good	0.181 \| good	5.065 \| good	0.2 \| good
2025-07-28T20:00:00.000Z	58 \| moderate	12.615 \| fine	19.013 \| good	44.975 \| good	0.245 \| good	3.048 \| good	0.201 \| good
2025-07-28T21:00:00.000Z	58 \| moderate	12.616 \| fine	19.036 \| good	48.208 \| good	0.189 \| good	3.013 \| good	0.201 \| good
2025-07-28T22:00:00.000Z	58 \| moderate	12.605 \| fine	19.038 \| good	46.667 \| good	0.176 \| good	3.524 \| good	0.201 \| good
2025-07-28T23:00:00.000Z	58 \| moderate	12.523 \| fine	19.113 \| good	47.117 \| good	0.192 \| good	2.875 \| good	0.201 \| good
2025-07-29T00:00:00.000Z	58 \| moderate	12.818 \| fine	19.099 \| good	38.125 \| good	0.238 \| good	4.676 \| good	0.201 \| good
2025-07-29T01:00:00.000Z	58 \| moderate	12.818 \| fine	19.099 \| good	32.091 \| good	0.188 \| good	4.677 \| good	0.201 \| good
2025-07-29T02:00:00.000Z	60 \| moderate	13.528 \| fine	20.107 \| good	29.083 \| good	0.23 \| good	6.995 \| good	0.3 \| good
2025-07-29T03:00:00.000Z	60 \| moderate	14.066 \| fine	20.246 \| good	31.208 \| good	0.209 \| good	19.422 \| good	0.497 \| good
2025-07-29T04:00:00.000Z	60 \| moderate	13.755 \| fine	20.212 \| good	34.682 \| good	0.201 \| good	14.24 \| good	0.497 \| good
2025-07-29T05:00:00.000Z	60 \| moderate	13.754 \| fine	20.218 \| good	35.273 \| good	0.802 \| good	12.301 \| good	0.399 \| good
2025-07-29T06:00:00.000Z	60 \| moderate	13.675 \| fine	20.111 \| good	29.633 \| good	0.728 \| good	8.945 \| good	0.398 \| good
2025-07-29T07:00:00.000Z	60 \| moderate	13.675 \| fine	20.146 \| good	26.58 \| good	0.264 \| good	8.939 \| good	0.398 \| good
2025-07-29T08:00:00.000Z	60 \| moderate	13.787 \| fine	20.194 \| good	24.393 \| good	0.235 \| good	8.936 \| good	0.398 \| good
2025-07-29T09:00:00.000Z	60 \| moderate	13.981 \| fine	21.168 \| good	19.041 \| good	0.202 \| good	13.965 \| good	0.398 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	13.984 \| fine	21.168 \| good	13.521 \| good	0.201 \| good	13.963 \| good	0.399 \| good
2025-07-29T11:00:00.000Z	60 \| moderate	14.365 \| fine	21.17 \| good	16.007 \| good	0.22 \| good	15.11 \| good	0.498 \| good
2025-07-29T12:00:00.000Z	62 \| moderate	15.031 \| fine	24.923 \| good	13.955 \| good	0.222 \| good	16.504 \| good	0.598 \| good
2025-07-29T13:00:00.000Z	62 \| moderate	15.029 \| fine	24.94 \| good	19.034 \| good	0.248 \| good	20.321 \| good	0.697 \| good
2025-07-29T14:00:00.000Z	64 \| moderate	15.986 \| fine	26.953 \| good	25.153 \| good	0.324 \| good	15.985 \| good	0.498 \| good
2025-07-29T15:00:00.000Z	64 \| moderate	16.191 \| fine	26.962 \| good	31.876 \| good	0.516 \| good	17.162 \| good	0.498 \| good
2025-07-29T16:00:00.000Z	64 \| moderate	15.804 \| fine	26.021 \| good	38.679 \| good	0.484 \| good	14.744 \| good	0.399 \| good
2025-07-29T17:00:00.000Z	62 \| moderate	15.199 \| fine	25.061 \| good	37.083 \| good	0.406 \| good	11.946 \| good	0.399 \| good
2025-07-29T18:00:00.000Z	60 \| moderate	14.393 \| fine	25.948 \| good	43.345 \| good	0.349 \| good	5.639 \| good	0.893 \| good
2025-07-29T19:00:00.000Z	60 \| moderate	13.857 \| fine	26.886 \| good	46.08 \| good	0.334 \| good	11.462 \| good	0.399 \| good
2025-07-29T20:00:00.000Z	61 \| moderate	12.765 \| fine	23.895 \| good	58.494 \| fine	0.395 \| good	9.68 \| good	0.3 \| good
2025-07-29T21:00:00.000Z	93 \| moderate	11.79 \| good	20.935 \| good	68.317 \| fine	0.424 \| good	4.337 \| good	0.201 \| good
2025-07-29T22:00:00.000Z	67 \| moderate	11.783 \| good	20.953 \| good	60.16 \| fine	0.312 \| good	5.841 \| good	0.201 \| good
2025-07-29T23:00:00.000Z	54 \| moderate	11.005 \| good	19.033 \| good	42.872 \| good	0.369 \| good	5.842 \| good	0.201 \| good
2025-07-30T00:00:00.000Z	54 \| moderate	10.914 \| good	18.043 \| good	42.641 \| good	0.368 \| good	6.042 \| good	0.201 \| good
2025-07-30T01:00:00.000Z	54 \| moderate	10.926 \| good	18.045 \| good	42.373 \| good	0.349 \| good	6.045 \| good	0.201 \| good
2025-07-30T02:00:00.000Z	54 \| moderate	11.139 \| good	18.123 \| good	38.647 \| good	0.342 \| good	11.361 \| good	0.3 \| good
2025-07-30T03:00:00.000Z	67 \| moderate	17.86 \| fine	79 \| fine	28.724 \| good	0.75 \| good	9.739 \| good	0.275 \| good
2025-07-30T04:00:00.000Z	54 \| moderate	11.495 \| good	19.165 \| good	42.819 \| good	0.326 \| good	28.148 \| good	0.496 \| good
2025-07-30T05:00:00.000Z	56 \| moderate	11.837 \| good	20.173 \| good	37.863 \| good	0.437 \| good	25.654 \| good	0.398 \| good
2025-07-30T06:00:00.000Z	56 \| moderate	11.887 \| good	19.3 \| good	25.544 \| good	0.372 \| good	15.686 \| good	0.299 \| good
2025-07-30T07:00:00.000Z	56 \| moderate	11.813 \| good	19.297 \| good	20.732 \| good	0.209 \| good	17.152 \| good	0.299 \| good
2025-07-30T08:00:00.000Z	56 \| moderate	11.809 \| good	19.302 \| good	16.013 \| good	0.22 \| good	15.661 \| good	0.299 \| good
2025-07-30T09:00:00.000Z	56 \| moderate	11.526 \| good	18.303 \| good	21.108 \| good	0.192 \| good	11.254 \| good	0.2 \| good
2025-07-30T10:00:00.000Z	56 \| moderate	11.518 \| good	18.34 \| good	21.341 \| good	0.178 \| good	15.453 \| good	0.3 \| good
2025-07-30T11:00:00.000Z	56 \| moderate	11.518 \| good	18.34 \| good	21.341 \| good	0.178 \| good	15.453 \| good	0.3 \| good
2025-07-29T19:00:00.000Z	71 \| moderate	19.782 \| fine	86.99 \| fine	49.196 \| good	0.427 \| good	1.199 \| good	0.186 \| good
2025-07-29T20:00:00.000Z	75 \| moderate	21.832 \| fine	94.978 \| fine	47.236 \| good	0.431 \| good	1.343 \| good	0.182 \| good
2025-07-29T21:00:00.000Z	73 \| moderate	20.911 \| fine	92.948 \| fine	49.179 \| good	0.434 \| good	1.487 \| good	0.177 \| good
2025-07-29T22:00:00.000Z	71 \| moderate	19.718 \| fine	86.988 \| fine	47.566 \| good	0.472 \| good	3.149 \| good	0.194 \| good
2025-07-29T23:00:00.000Z	69 \| moderate	18.961 \| fine	83.006 \| fine	40.913 \| good	0.51 \| good	4.812 \| good	0.21 \| good
2025-07-30T00:00:00.000Z	67 \| moderate	17.668 \| fine	78.975 \| fine	37.571 \| good	0.547 \| good	6.474 \| good	0.226 \| good
2025-07-30T01:00:00.000Z	67 \| moderate	17.78 \| fine	78.981 \| fine	31.903 \| good	0.577 \| good	6.626 \| good	0.226 \| good
2025-07-30T02:00:00.000Z	66 \| moderate	16.604 \| fine	73 \| fine	27.865 \| good	0.606 \| good	6.778 \| good	0.226 \| good
2025-07-30T03:00:00.000Z	67 \| moderate	18.105 \| fine	80.957 \| fine	26.568 \| good	0.636 \| good	6.93 \| good	0.226 \| good
2025-07-30T04:00:00.000Z	69 \| moderate	19.476 \| fine	85 \| fine	21.37 \| good	0.616 \| good	6.348 \| good	0.219 \| good
2025-07-30T05:00:00.000Z	73 \| moderate	21.438 \| fine	94.948 \| fine	18.556 \| good	0.595 \| good	5.766 \| good	0.212 \| good
2025-07-30T06:00:00.000Z	75 \| moderate	21.914 \| fine	96.96 \| fine	10.057 \| good	0.575 \| good	5.184 \| good	0.206 \| good
2025-07-30T07:00:00.000Z	73 \| moderate	21.034 \| fine	92.96 \| fine	7.121 \| good	0.574 \| good	5.06 \| good	0.205 \| good
2025-07-30T08:00:00.000Z	73 \| moderate	21.194 \| fine	92.962 \| fine	6.78 \| good	0.572 \| good	4.936 \| good	0.204 \| good
2025-07-30T09:00:00.000Z	77 \| moderate	22.557 \| fine	98.985 \| fine	9.492 \| good	0.571 \| good	4.812 \| good	0.204 \| good
2025-07-30T10:00:00.000Z	69 \| moderate	19.437 \| fine	84.997 \| fine	9.959 \| good	0.59 \| good	4.577 \| good	0.213 \| good
2025-07-30T11:00:00.000Z	75 \| moderate	22.477 \| fine	98.967 \| fine	17.301 \| good	0.609 \| good	4.341 \| good	0.223 \| good
2025-07-30T12:00:00.000Z	82 \| moderate	25.957 \| fine	112.973 \| fine	30.834 \| good	0.628 \| good	4.105 \| good	0.233 \| good
2025-07-30T13:00:00.000Z	77 \| moderate	22.76 \| fine	99.001 \| fine	38.415 \| good	0.619 \| good	3.413 \| good	0.223 \| good
2025-07-30T14:00:00.000Z	77 \| moderate	23.276 \| fine	101.006 \| fine	52.425 \| good	0.611 \| good	2.72 \| good	0.214 \| good
2025-07-30T15:00:00.000Z	84 \| moderate	26.916 \| fine	116.963 \| fine	55.363 \| fine	0.602 \| good	2.027 \| good	0.204 \| good
2025-07-30T16:00:00.000Z	84 \| moderate	26.598 \| fine	114.977 \| fine	57.185 \| fine	0.514 \| good	1.714 \| good	0.201 \| good
2025-07-30T17:00:00.000Z	82 \| moderate	25.535 \| fine	110.975 \| fine	58.622 \| fine	0.425 \| good	1.401 \| good	0.197 \| good
2025-07-30T18:00:00.000Z	81 \| moderate	24.753 \| fine	106.991 \| fine	57.894 \| fine	0.336 \| good	1.088 \| good	0.194 \| good
2025-07-30T19:00:00.000Z	81 \| moderate	24.597 \| fine	106.976 \| fine	56.236 \| fine	0.326 \| good	1.174 \| good	0.191 \| good
2025-07-30T20:00:00.000Z	75 \| moderate	22.402 \| fine	98.981 \| fine	56.567 \| fine	0.315 \| good	1.26 \| good	0.187 \| good
2025-07-30T21:00:00.000Z	79 \| moderate	23.679 \| fine	103.006 \| fine	62.426 \| fine	0.304 \| good	1.346 \| good	0.184 \| good
2025-07-30T22:00:00.000Z	77 \| moderate	23.201 \| fine	100.976 \| fine	60.347 \| fine	0.353 \| good	3.41 \| good	0.207 \| good
2025-07-30T23:00:00.000Z	77 \| moderate	23.41 \| fine	102.971 \| fine	61.498 \| fine	0.401 \| good	5.474 \| good	0.231 \| good
2025-07-31T00:00:00.000Z	81 \| moderate	25.192 \| fine	109.013 \| fine	57.616 \| fine	0.449 \| good	7.538 \| good	0.254 \| good
2025-07-31T01:00:00.000Z	75 \| moderate	21.833 \| fine	95.007 \| fine	48.444 \| good	0.525 \| good	8.341 \| good	0.265 \| good
2025-07-31T02:00:00.000Z	69 \| moderate	19.186 \| fine	85.008 \| fine	47.537 \| good	0.6 \| good	9.145 \| good	0.275 \| good
2025-07-31T03:00:00.000Z	66 \| moderate	16.965 \| fine	75.019 \| fine	45.767 \| good	0.675 \| good	9.948 \| good	0.285 \| good
2025-07-31T04:00:00.000Z	62 \| moderate	14.763 \| fine	65.027 \| fine	41.272 \| good	0.705 \| good	10.231 \| good	0.29 \| good
2025-07-31T05:00:00.000Z	60 \| moderate	14.402 \| fine	64.996 \| fine	36.026 \| good	0.735 \| good	10.513 \| good	0.294 \| good
2025-07-31T06:00:00.000Z	62 \| moderate	14.647 \| fine	65.003 \| fine	34.748 \| good	0.765 \| good	10.795 \| good	0.299 \| good
2025-07-31T07:00:00.000Z	58 \| moderate	13.366 \| fine	60.995 \| fine	33.733 \| good	0.75 \| good	8.467 \| good	0.266 \| good
2025-07-31T08:00:00.000Z	62 \| moderate	15.001 \| fine	67.002 \| fine	29.45 \| good	0.734 \| good	6.138 \| good	0.234 \| good
2025-07-31T09:00:00.000Z	69 \| moderate	19.079 \| fine	84.965 \| fine	33.47 \| good	0.718 \| good	3.81 \| good	0.202 \| good
2025-07-31T10:00:00.000Z	66 \| moderate	16.66 \| fine	73.011 \| fine	29.722 \| good	0.692 \| good	3.621 \| good	0.198 \| good
2025-07-31T11:00:00.000Z	67 \| moderate	17.682 \| fine	78.988 \| fine	28.8 \| good	0.666 \| good	3.431 \| good	0.194 \| good
2025-07-31T12:00:00.000Z	73 \| moderate	21.19 \| fine	93.009 \| fine	25.333 \| good	0.64 \| good	3.242 \| good	0.19 \| good
2025-07-31T13:00:00.000Z	71 \| moderate	19.571 \| fine	86.976 \| fine	26.698 \| good	0.655 \| good	3.087 \| good	0.189 \| good
2025-07-31T14:00:00.000Z	69 \| moderate	19.475 \| fine	85.013 \| fine	33.137 \| good	0.671 \| good	2.932 \| good	0.189 \| good
2025-07-31T15:00:00.000Z	71 \| moderate	19.955 \| fine	87.008 \| fine	39.527 \| good	0.687 \| good	2.776 \| good	0.188 \| good
2025-07-31T16:00:00.000Z	73 \| moderate	21.274 \| fine	92.97 \| fine	42.027 \| good	0.672 \| good	2.487 \| good	0.188 \| good
2025-07-31T17:00:00.000Z	73 \| moderate	21.426 \| fine	94.93 \| fine	38.877 \| good	0.657 \| good	2.198 \| good	0.188 \| good
2025-07-31T18:00:00.000Z	73 \| moderate	20.57 \| fine	90.941 \| fine	37.637 \| good	0.642 \| good	1.91 \| good	0.189 \| good

Hartford

Get reliable air quality data to drive your business

Hartford, Connecticut air quality map: Track AQI near you

0.39ppm

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 04:00:00 on 2025-07-29.

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 01:00:00 on 2025-07-29.

What is the current air quality in Hartford, Connecticut?

The current air quality in Hartford, Connecticut is 62, 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 15.199 μg/m³.

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

The current PM₁₀ concentration at Hartford, Connecticut is 25.061 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 0.406 ppb.

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

The current ozone (O₃) concentration at Hartford, Connecticut is 37.083 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Hartford, Connecticut is 11.946 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T12:00:00.000Z	73 \| moderate	20.937 \| fine	30.347 \| good	12.944 \| good	0.198 \| good	10.875 \| good	0.202 \| good
2025-07-28T13:00:00.000Z	67 \| moderate	17.593 \| fine	26.318 \| good	20.239 \| good	0.211 \| good	7.937 \| good	0.201 \| good
2025-07-28T14:00:00.000Z	67 \| moderate	17.583 \| fine	26.265 \| good	15.807 \| good	0.325 \| good	4.158 \| good	0.201 \| good
2025-07-28T15:00:00.000Z	60 \| moderate	13.699 \| fine	22.263 \| good	25.083 \| good	0.225 \| good	4.155 \| good	0.201 \| good
2025-07-28T16:00:00.000Z	58 \| moderate	12.917 \| fine	21.176 \| good	36.978 \| good	0.206 \| good	4.794 \| good	0.2 \| good
2025-07-28T17:00:00.000Z	58 \| moderate	13.078 \| fine	20.158 \| good	37.166 \| good	0.227 \| good	4.393 \| good	0.2 \| good
2025-07-28T18:00:00.000Z	58 \| moderate	13.048 \| fine	20.146 \| good	41.987 \| good	0.384 \| good	4.499 \| good	0.2 \| good
2025-07-28T19:00:00.000Z	58 \| moderate	12.727 \| fine	19.055 \| good	44.08 \| good	0.181 \| good	5.065 \| good	0.2 \| good
2025-07-28T20:00:00.000Z	58 \| moderate	12.615 \| fine	19.013 \| good	44.975 \| good	0.245 \| good	3.048 \| good	0.201 \| good
2025-07-28T21:00:00.000Z	58 \| moderate	12.616 \| fine	19.036 \| good	48.208 \| good	0.189 \| good	3.013 \| good	0.201 \| good
2025-07-28T22:00:00.000Z	58 \| moderate	12.605 \| fine	19.038 \| good	46.667 \| good	0.176 \| good	3.524 \| good	0.201 \| good
2025-07-28T23:00:00.000Z	58 \| moderate	12.523 \| fine	19.113 \| good	47.117 \| good	0.192 \| good	2.875 \| good	0.201 \| good
2025-07-29T00:00:00.000Z	58 \| moderate	12.818 \| fine	19.099 \| good	38.125 \| good	0.238 \| good	4.676 \| good	0.201 \| good
2025-07-29T01:00:00.000Z	58 \| moderate	12.818 \| fine	19.099 \| good	32.091 \| good	0.188 \| good	4.677 \| good	0.201 \| good
2025-07-29T02:00:00.000Z	60 \| moderate	13.528 \| fine	20.107 \| good	29.083 \| good	0.23 \| good	6.995 \| good	0.3 \| good
2025-07-29T03:00:00.000Z	60 \| moderate	14.066 \| fine	20.246 \| good	31.208 \| good	0.209 \| good	19.422 \| good	0.497 \| good
2025-07-29T04:00:00.000Z	60 \| moderate	13.755 \| fine	20.212 \| good	34.682 \| good	0.201 \| good	14.24 \| good	0.497 \| good
2025-07-29T05:00:00.000Z	60 \| moderate	13.754 \| fine	20.218 \| good	35.273 \| good	0.802 \| good	12.301 \| good	0.399 \| good
2025-07-29T06:00:00.000Z	60 \| moderate	13.675 \| fine	20.111 \| good	29.633 \| good	0.728 \| good	8.945 \| good	0.398 \| good
2025-07-29T07:00:00.000Z	60 \| moderate	13.675 \| fine	20.146 \| good	26.58 \| good	0.264 \| good	8.939 \| good	0.398 \| good
2025-07-29T08:00:00.000Z	60 \| moderate	13.787 \| fine	20.194 \| good	24.393 \| good	0.235 \| good	8.936 \| good	0.398 \| good
2025-07-29T09:00:00.000Z	60 \| moderate	13.981 \| fine	21.168 \| good	19.041 \| good	0.202 \| good	13.965 \| good	0.398 \| good
2025-07-29T10:00:00.000Z	60 \| moderate	13.984 \| fine	21.168 \| good	13.521 \| good	0.201 \| good	13.963 \| good	0.399 \| good
2025-07-29T11:00:00.000Z	60 \| moderate	14.365 \| fine	21.17 \| good	16.007 \| good	0.22 \| good	15.11 \| good	0.498 \| good
2025-07-29T12:00:00.000Z	62 \| moderate	15.031 \| fine	24.923 \| good	13.955 \| good	0.222 \| good	16.504 \| good	0.598 \| good
2025-07-29T13:00:00.000Z	62 \| moderate	15.029 \| fine	24.94 \| good	19.034 \| good	0.248 \| good	20.321 \| good	0.697 \| good
2025-07-29T14:00:00.000Z	64 \| moderate	15.986 \| fine	26.953 \| good	25.153 \| good	0.324 \| good	15.985 \| good	0.498 \| good
2025-07-29T15:00:00.000Z	64 \| moderate	16.191 \| fine	26.962 \| good	31.876 \| good	0.516 \| good	17.162 \| good	0.498 \| good
2025-07-29T16:00:00.000Z	64 \| moderate	15.804 \| fine	26.021 \| good	38.679 \| good	0.484 \| good	14.744 \| good	0.399 \| good
2025-07-29T17:00:00.000Z	62 \| moderate	15.199 \| fine	25.061 \| good	37.083 \| good	0.406 \| good	11.946 \| good	0.399 \| good
2025-07-29T18:00:00.000Z	60 \| moderate	14.393 \| fine	25.948 \| good	43.345 \| good	0.349 \| good	5.639 \| good	0.893 \| good
2025-07-29T19:00:00.000Z	60 \| moderate	13.857 \| fine	26.886 \| good	46.08 \| good	0.334 \| good	11.462 \| good	0.399 \| good
2025-07-29T20:00:00.000Z	61 \| moderate	12.765 \| fine	23.895 \| good	58.494 \| fine	0.395 \| good	9.68 \| good	0.3 \| good
2025-07-29T21:00:00.000Z	93 \| moderate	11.79 \| good	20.935 \| good	68.317 \| fine	0.424 \| good	4.337 \| good	0.201 \| good
2025-07-29T22:00:00.000Z	67 \| moderate	11.783 \| good	20.953 \| good	60.16 \| fine	0.312 \| good	5.841 \| good	0.201 \| good
2025-07-29T23:00:00.000Z	54 \| moderate	11.005 \| good	19.033 \| good	42.872 \| good	0.369 \| good	5.842 \| good	0.201 \| good
2025-07-30T00:00:00.000Z	54 \| moderate	10.914 \| good	18.043 \| good	42.641 \| good	0.368 \| good	6.042 \| good	0.201 \| good
2025-07-30T01:00:00.000Z	54 \| moderate	10.926 \| good	18.045 \| good	42.373 \| good	0.349 \| good	6.045 \| good	0.201 \| good
2025-07-30T02:00:00.000Z	54 \| moderate	11.139 \| good	18.123 \| good	38.647 \| good	0.342 \| good	11.361 \| good	0.3 \| good
2025-07-30T03:00:00.000Z	67 \| moderate	17.86 \| fine	79 \| fine	28.724 \| good	0.75 \| good	9.739 \| good	0.275 \| good
2025-07-30T04:00:00.000Z	54 \| moderate	11.495 \| good	19.165 \| good	42.819 \| good	0.326 \| good	28.148 \| good	0.496 \| good
2025-07-30T05:00:00.000Z	56 \| moderate	11.837 \| good	20.173 \| good	37.863 \| good	0.437 \| good	25.654 \| good	0.398 \| good
2025-07-30T06:00:00.000Z	56 \| moderate	11.887 \| good	19.3 \| good	25.544 \| good	0.372 \| good	15.686 \| good	0.299 \| good
2025-07-30T07:00:00.000Z	56 \| moderate	11.813 \| good	19.297 \| good	20.732 \| good	0.209 \| good	17.152 \| good	0.299 \| good
2025-07-30T08:00:00.000Z	56 \| moderate	11.809 \| good	19.302 \| good	16.013 \| good	0.22 \| good	15.661 \| good	0.299 \| good
2025-07-30T09:00:00.000Z	56 \| moderate	11.526 \| good	18.303 \| good	21.108 \| good	0.192 \| good	11.254 \| good	0.2 \| good
2025-07-30T10:00:00.000Z	56 \| moderate	11.518 \| good	18.34 \| good	21.341 \| good	0.178 \| good	15.453 \| good	0.3 \| good
2025-07-30T11:00:00.000Z	56 \| moderate	11.518 \| good	18.34 \| good	21.341 \| good	0.178 \| good	15.453 \| good	0.3 \| good
2025-07-29T19:00:00.000Z	71 \| moderate	19.782 \| fine	86.99 \| fine	49.196 \| good	0.427 \| good	1.199 \| good	0.186 \| good
2025-07-29T20:00:00.000Z	75 \| moderate	21.832 \| fine	94.978 \| fine	47.236 \| good	0.431 \| good	1.343 \| good	0.182 \| good
2025-07-29T21:00:00.000Z	73 \| moderate	20.911 \| fine	92.948 \| fine	49.179 \| good	0.434 \| good	1.487 \| good	0.177 \| good
2025-07-29T22:00:00.000Z	71 \| moderate	19.718 \| fine	86.988 \| fine	47.566 \| good	0.472 \| good	3.149 \| good	0.194 \| good
2025-07-29T23:00:00.000Z	69 \| moderate	18.961 \| fine	83.006 \| fine	40.913 \| good	0.51 \| good	4.812 \| good	0.21 \| good
2025-07-30T00:00:00.000Z	67 \| moderate	17.668 \| fine	78.975 \| fine	37.571 \| good	0.547 \| good	6.474 \| good	0.226 \| good
2025-07-30T01:00:00.000Z	67 \| moderate	17.78 \| fine	78.981 \| fine	31.903 \| good	0.577 \| good	6.626 \| good	0.226 \| good
2025-07-30T02:00:00.000Z	66 \| moderate	16.604 \| fine	73 \| fine	27.865 \| good	0.606 \| good	6.778 \| good	0.226 \| good
2025-07-30T03:00:00.000Z	67 \| moderate	18.105 \| fine	80.957 \| fine	26.568 \| good	0.636 \| good	6.93 \| good	0.226 \| good
2025-07-30T04:00:00.000Z	69 \| moderate	19.476 \| fine	85 \| fine	21.37 \| good	0.616 \| good	6.348 \| good	0.219 \| good
2025-07-30T05:00:00.000Z	73 \| moderate	21.438 \| fine	94.948 \| fine	18.556 \| good	0.595 \| good	5.766 \| good	0.212 \| good
2025-07-30T06:00:00.000Z	75 \| moderate	21.914 \| fine	96.96 \| fine	10.057 \| good	0.575 \| good	5.184 \| good	0.206 \| good
2025-07-30T07:00:00.000Z	73 \| moderate	21.034 \| fine	92.96 \| fine	7.121 \| good	0.574 \| good	5.06 \| good	0.205 \| good
2025-07-30T08:00:00.000Z	73 \| moderate	21.194 \| fine	92.962 \| fine	6.78 \| good	0.572 \| good	4.936 \| good	0.204 \| good
2025-07-30T09:00:00.000Z	77 \| moderate	22.557 \| fine	98.985 \| fine	9.492 \| good	0.571 \| good	4.812 \| good	0.204 \| good
2025-07-30T10:00:00.000Z	69 \| moderate	19.437 \| fine	84.997 \| fine	9.959 \| good	0.59 \| good	4.577 \| good	0.213 \| good
2025-07-30T11:00:00.000Z	75 \| moderate	22.477 \| fine	98.967 \| fine	17.301 \| good	0.609 \| good	4.341 \| good	0.223 \| good
2025-07-30T12:00:00.000Z	82 \| moderate	25.957 \| fine	112.973 \| fine	30.834 \| good	0.628 \| good	4.105 \| good	0.233 \| good
2025-07-30T13:00:00.000Z	77 \| moderate	22.76 \| fine	99.001 \| fine	38.415 \| good	0.619 \| good	3.413 \| good	0.223 \| good
2025-07-30T14:00:00.000Z	77 \| moderate	23.276 \| fine	101.006 \| fine	52.425 \| good	0.611 \| good	2.72 \| good	0.214 \| good
2025-07-30T15:00:00.000Z	84 \| moderate	26.916 \| fine	116.963 \| fine	55.363 \| fine	0.602 \| good	2.027 \| good	0.204 \| good
2025-07-30T16:00:00.000Z	84 \| moderate	26.598 \| fine	114.977 \| fine	57.185 \| fine	0.514 \| good	1.714 \| good	0.201 \| good
2025-07-30T17:00:00.000Z	82 \| moderate	25.535 \| fine	110.975 \| fine	58.622 \| fine	0.425 \| good	1.401 \| good	0.197 \| good
2025-07-30T18:00:00.000Z	81 \| moderate	24.753 \| fine	106.991 \| fine	57.894 \| fine	0.336 \| good	1.088 \| good	0.194 \| good
2025-07-30T19:00:00.000Z	81 \| moderate	24.597 \| fine	106.976 \| fine	56.236 \| fine	0.326 \| good	1.174 \| good	0.191 \| good
2025-07-30T20:00:00.000Z	75 \| moderate	22.402 \| fine	98.981 \| fine	56.567 \| fine	0.315 \| good	1.26 \| good	0.187 \| good
2025-07-30T21:00:00.000Z	79 \| moderate	23.679 \| fine	103.006 \| fine	62.426 \| fine	0.304 \| good	1.346 \| good	0.184 \| good
2025-07-30T22:00:00.000Z	77 \| moderate	23.201 \| fine	100.976 \| fine	60.347 \| fine	0.353 \| good	3.41 \| good	0.207 \| good
2025-07-30T23:00:00.000Z	77 \| moderate	23.41 \| fine	102.971 \| fine	61.498 \| fine	0.401 \| good	5.474 \| good	0.231 \| good
2025-07-31T00:00:00.000Z	81 \| moderate	25.192 \| fine	109.013 \| fine	57.616 \| fine	0.449 \| good	7.538 \| good	0.254 \| good
2025-07-31T01:00:00.000Z	75 \| moderate	21.833 \| fine	95.007 \| fine	48.444 \| good	0.525 \| good	8.341 \| good	0.265 \| good
2025-07-31T02:00:00.000Z	69 \| moderate	19.186 \| fine	85.008 \| fine	47.537 \| good	0.6 \| good	9.145 \| good	0.275 \| good
2025-07-31T03:00:00.000Z	66 \| moderate	16.965 \| fine	75.019 \| fine	45.767 \| good	0.675 \| good	9.948 \| good	0.285 \| good
2025-07-31T04:00:00.000Z	62 \| moderate	14.763 \| fine	65.027 \| fine	41.272 \| good	0.705 \| good	10.231 \| good	0.29 \| good
2025-07-31T05:00:00.000Z	60 \| moderate	14.402 \| fine	64.996 \| fine	36.026 \| good	0.735 \| good	10.513 \| good	0.294 \| good
2025-07-31T06:00:00.000Z	62 \| moderate	14.647 \| fine	65.003 \| fine	34.748 \| good	0.765 \| good	10.795 \| good	0.299 \| good
2025-07-31T07:00:00.000Z	58 \| moderate	13.366 \| fine	60.995 \| fine	33.733 \| good	0.75 \| good	8.467 \| good	0.266 \| good
2025-07-31T08:00:00.000Z	62 \| moderate	15.001 \| fine	67.002 \| fine	29.45 \| good	0.734 \| good	6.138 \| good	0.234 \| good
2025-07-31T09:00:00.000Z	69 \| moderate	19.079 \| fine	84.965 \| fine	33.47 \| good	0.718 \| good	3.81 \| good	0.202 \| good
2025-07-31T10:00:00.000Z	66 \| moderate	16.66 \| fine	73.011 \| fine	29.722 \| good	0.692 \| good	3.621 \| good	0.198 \| good
2025-07-31T11:00:00.000Z	67 \| moderate	17.682 \| fine	78.988 \| fine	28.8 \| good	0.666 \| good	3.431 \| good	0.194 \| good
2025-07-31T12:00:00.000Z	73 \| moderate	21.19 \| fine	93.009 \| fine	25.333 \| good	0.64 \| good	3.242 \| good	0.19 \| good
2025-07-31T13:00:00.000Z	71 \| moderate	19.571 \| fine	86.976 \| fine	26.698 \| good	0.655 \| good	3.087 \| good	0.189 \| good
2025-07-31T14:00:00.000Z	69 \| moderate	19.475 \| fine	85.013 \| fine	33.137 \| good	0.671 \| good	2.932 \| good	0.189 \| good
2025-07-31T15:00:00.000Z	71 \| moderate	19.955 \| fine	87.008 \| fine	39.527 \| good	0.687 \| good	2.776 \| good	0.188 \| good
2025-07-31T16:00:00.000Z	73 \| moderate	21.274 \| fine	92.97 \| fine	42.027 \| good	0.672 \| good	2.487 \| good	0.188 \| good
2025-07-31T17:00:00.000Z	73 \| moderate	21.426 \| fine	94.93 \| fine	38.877 \| good	0.657 \| good	2.198 \| good	0.188 \| good
2025-07-31T18:00:00.000Z	73 \| moderate	20.57 \| fine	90.941 \| fine	37.637 \| good	0.642 \| good	1.91 \| good	0.189 \| 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

Get reliable air quality data to drive your business

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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Air quality levels in US

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?