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

Currently, Westport, Connecticut has a sulfur dioxide (SO2) concentration of 0.582 ppb.

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

The current ozone (O3) level in Westport, Connecticut at the moment is 30.286 ppm.

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

Nitrogen dioxide (NO2) level in Westport, Connecticut at the moment is 11.55 ppb.

Live air quality index in Westport, Connecticut today

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

Stay updated with real-time air quality in Westport, 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

Westport, Connecticut

Last updated: ... (Local time)

Major air pollutants in Westport, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

11.95 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

52.20 μg/m³

155

255

425

605+

Ozone (O₃)

18.31 ppb

201

201+

Sulfur Dioxide (SO₂)

0.71 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

19.50 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Westport, Connecticut

Get Live Pollen Counts

Westport, Connecticut

Scroll To Air Quality Map

Track live Westport, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T12:00:00.000Z	54 \| moderate	11.23 \| good	28.521 \| good	17.54 \| good	0.478 \| good	10.24 \| good	0.364 \| good
2025-07-28T13:00:00.000Z	54 \| moderate	10.552 \| good	26.444 \| good	25.398 \| good	0.468 \| good	6.359 \| good	0.326 \| good
2025-07-28T14:00:00.000Z	54 \| moderate	10.702 \| good	29.094 \| good	22.812 \| good	0.295 \| good	3.721 \| good	0.323 \| good
2025-07-28T15:00:00.000Z	52 \| moderate	9.65 \| good	25.85 \| good	21.9 \| good	0.299 \| good	3.676 \| good	0.271 \| good
2025-07-28T16:00:00.000Z	52 \| moderate	9.512 \| good	21.249 \| good	35.896 \| good	0.535 \| good	3.511 \| good	0.18 \| good
2025-07-28T17:00:00.000Z	52 \| moderate	10.224 \| good	28.099 \| good	40.731 \| good	0.539 \| good	3.789 \| good	0.18 \| good
2025-07-28T18:00:00.000Z	52 \| moderate	10.095 \| good	26.96 \| good	40.78 \| good	0.582 \| good	7.742 \| good	0.214 \| good
2025-07-28T19:00:00.000Z	49 \| good	9.499 \| good	26.996 \| good	45.525 \| good	0.435 \| good	4.785 \| good	0.18 \| good
2025-07-28T20:00:00.000Z	52 \| moderate	10.035 \| good	23.779 \| good	46.96 \| good	0.458 \| good	5.051 \| good	0.217 \| good
2025-07-28T21:00:00.000Z	52 \| moderate	9.8 \| good	23.092 \| good	42.679 \| good	0.45 \| good	2.012 \| good	0.252 \| good
2025-07-28T22:00:00.000Z	52 \| moderate	9.551 \| good	25.835 \| good	46.8 \| good	0.281 \| good	1.833 \| good	0.252 \| good
2025-07-28T23:00:00.000Z	52 \| moderate	10.324 \| good	28.022 \| good	50.41 \| good	0.368 \| good	4.312 \| good	0.217 \| good
2025-07-29T00:00:00.000Z	54 \| moderate	10.952 \| good	22.134 \| good	46.373 \| good	0.473 \| good	6.622 \| good	0.266 \| good
2025-07-29T01:00:00.000Z	54 \| moderate	11.069 \| good	21.377 \| good	43.48 \| good	0.454 \| good	4.908 \| good	0.302 \| good
2025-07-29T02:00:00.000Z	56 \| moderate	12.308 \| fine	34.096 \| good	37.572 \| good	0.634 \| good	15.461 \| good	0.292 \| good
2025-07-29T03:00:00.000Z	56 \| moderate	11.949 \| good	29.854 \| good	34.752 \| good	0.529 \| good	12.797 \| good	0.339 \| good
2025-07-29T04:00:00.000Z	56 \| moderate	11.673 \| good	24.662 \| good	34.23 \| good	0.577 \| good	11.419 \| good	0.356 \| good
2025-07-29T05:00:00.000Z	56 \| moderate	12.179 \| fine	32.807 \| good	30.671 \| good	0.934 \| good	16.451 \| good	0.443 \| good
2025-07-29T06:00:00.000Z	56 \| moderate	11.949 \| good	31.555 \| good	22.933 \| good	0.832 \| good	14.298 \| good	0.326 \| good
2025-07-29T07:00:00.000Z	56 \| moderate	11.697 \| good	25.046 \| good	18.691 \| good	0.758 \| good	12.871 \| good	0.43 \| good
2025-07-29T08:00:00.000Z	58 \| moderate	13.012 \| fine	34.733 \| good	15.743 \| good	0.752 \| good	13.122 \| good	0.43 \| good
2025-07-29T09:00:00.000Z	56 \| moderate	12.41 \| fine	28.615 \| good	21.369 \| good	0.752 \| good	11.183 \| good	0.326 \| good
2025-07-29T10:00:00.000Z	58 \| moderate	12.863 \| fine	30.188 \| good	14.279 \| good	0.752 \| good	11.843 \| good	0.426 \| good
2025-07-29T11:00:00.000Z	58 \| moderate	13.275 \| fine	27.896 \| good	16.928 \| good	0.759 \| good	13.142 \| good	0.469 \| good
2025-07-29T12:00:00.000Z	58 \| moderate	13.115 \| fine	23.379 \| good	20.555 \| good	0.742 \| good	11.896 \| good	0.487 \| good
2025-07-29T13:00:00.000Z	60 \| moderate	14.341 \| fine	39.178 \| good	15.021 \| good	0.861 \| good	13.701 \| good	0.575 \| good
2025-07-29T14:00:00.000Z	64 \| moderate	16.372 \| fine	58.578 \| fine	18.323 \| good	1.034 \| good	17.803 \| good	0.431 \| good
2025-07-29T15:00:00.000Z	60 \| moderate	14.448 \| fine	38.906 \| good	24.752 \| good	1.082 \| good	14.654 \| good	0.421 \| good
2025-07-29T16:00:00.000Z	62 \| moderate	14.612 \| fine	40.488 \| good	31.423 \| good	1.016 \| good	13.449 \| good	0.346 \| good
2025-07-29T17:00:00.000Z	62 \| moderate	15.334 \| fine	38.861 \| good	41.314 \| good	0.951 \| good	12.012 \| good	0.315 \| good
2025-07-29T18:00:00.000Z	62 \| moderate	15.16 \| fine	32.273 \| good	58.218 \| fine	0.919 \| good	7.453 \| good	0.392 \| good
2025-07-29T19:00:00.000Z	101 \| sensitive	15.316 \| fine	31.023 \| good	70.862 \| fine	0.8 \| good	7.728 \| good	0.327 \| good
2025-07-29T20:00:00.000Z	61 \| moderate	13.769 \| fine	27.894 \| good	58.439 \| fine	0.881 \| good	13.618 \| good	0.328 \| good
2025-07-29T21:00:00.000Z	77 \| moderate	13.49 \| fine	33.507 \| good	63.103 \| fine	0.86 \| good	12.018 \| good	0.308 \| good
2025-07-29T22:00:00.000Z	74 \| moderate	13.697 \| fine	37.848 \| good	61.61 \| fine	0.998 \| good	2.673 \| good	0.308 \| good
2025-07-29T23:00:00.000Z	74 \| moderate	12.852 \| fine	34.855 \| good	62.245 \| fine	1.025 \| good	2.068 \| good	0.345 \| good
2025-07-30T00:00:00.000Z	97 \| moderate	14.179 \| fine	28.293 \| good	68.81 \| fine	1.05 \| good	4.785 \| good	0.344 \| good
2025-07-30T01:00:00.000Z	93 \| moderate	14.019 \| fine	34.124 \| good	68.037 \| fine	1.04 \| good	4.413 \| good	0.268 \| good
2025-07-30T02:00:00.000Z	84 \| moderate	13.055 \| fine	35.42 \| good	64.525 \| fine	1.434 \| good	5.732 \| good	0.31 \| good
2025-07-30T03:00:00.000Z	73 \| moderate	21.333 \| fine	94.072 \| fine	24.332 \| good	0.946 \| good	9.457 \| good	0.267 \| good
2025-07-30T04:00:00.000Z	60 \| moderate	13.703 \| fine	30.186 \| good	47.418 \| good	1.153 \| good	20.441 \| good	0.253 \| good
2025-07-30T05:00:00.000Z	62 \| moderate	14.725 \| fine	41.459 \| good	48.308 \| good	1.147 \| good	19.311 \| good	0.258 \| good
2025-07-30T06:00:00.000Z	62 \| moderate	14.62 \| fine	37.036 \| good	42.042 \| good	1.025 \| good	12.801 \| good	0.263 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.45 \| fine	35.363 \| good	36.838 \| good	0.793 \| good	14.672 \| good	0.232 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	14.619 \| fine	37.306 \| good	28.88 \| good	0.775 \| good	12.883 \| good	0.232 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	13.08 \| fine	33.287 \| good	25.223 \| good	0.584 \| good	13.751 \| good	0.217 \| good
2025-07-30T10:00:00.000Z	56 \| moderate	12.217 \| fine	31.424 \| good	21.337 \| good	0.501 \| good	14.945 \| good	0.285 \| good
2025-07-30T11:00:00.000Z	56 \| moderate	11.95 \| good	52.205 \| good	18.308 \| good	0.709 \| good	19.504 \| good	0.321 \| good
2025-07-29T05:00:00.000Z	62 \| moderate	15.448 \| fine	68.838 \| fine	24.218 \| good	0.808 \| good	14.849 \| good	0.361 \| good
2025-07-29T06:00:00.000Z	64 \| moderate	16.112 \| fine	70.972 \| fine	23.388 \| good	0.81 \| good	15.762 \| good	0.377 \| good
2025-07-29T07:00:00.000Z	66 \| moderate	16.504 \| fine	72.972 \| fine	23.239 \| good	0.823 \| good	14.96 \| good	0.369 \| good
2025-07-29T08:00:00.000Z	66 \| moderate	17.235 \| fine	76.623 \| fine	21.589 \| good	0.836 \| good	14.159 \| good	0.361 \| good
2025-07-29T09:00:00.000Z	67 \| moderate	18.175 \| fine	80.622 \| fine	22.92 \| good	0.849 \| good	13.357 \| good	0.353 \| good
2025-07-29T10:00:00.000Z	67 \| moderate	18.365 \| fine	81.094 \| fine	20.153 \| good	0.876 \| good	11.634 \| good	0.342 \| good
2025-07-29T11:00:00.000Z	71 \| moderate	20.075 \| fine	89.008 \| fine	24 \| good	0.903 \| good	9.911 \| good	0.331 \| good
2025-07-29T12:00:00.000Z	77 \| moderate	23.392 \| fine	101.842 \| fine	37.819 \| good	0.93 \| good	8.188 \| good	0.319 \| good
2025-07-29T13:00:00.000Z	84 \| moderate	27.326 \| fine	119.167 \| fine	46.939 \| good	0.849 \| good	6.599 \| good	0.289 \| good
2025-07-29T14:00:00.000Z	88 \| moderate	28.615 \| fine	123.691 \| fine	50.832 \| good	0.767 \| good	5.01 \| good	0.258 \| good
2025-07-29T15:00:00.000Z	84 \| moderate	26.905 \| fine	117.089 \| fine	58.749 \| fine	0.686 \| good	3.42 \| good	0.228 \| good
2025-07-29T16:00:00.000Z	84 \| moderate	25.378 \| fine	110.727 \| fine	64.64 \| fine	0.649 \| good	2.851 \| good	0.215 \| good
2025-07-29T17:00:00.000Z	90 \| moderate	25.302 \| fine	110.553 \| fine	66.574 \| fine	0.611 \| good	2.282 \| good	0.202 \| good
2025-07-29T18:00:00.000Z	100 \| moderate	24.777 \| fine	108.479 \| fine	69.714 \| fine	0.574 \| good	1.713 \| good	0.19 \| good
2025-07-29T19:00:00.000Z	90 \| moderate	24.474 \| fine	106.233 \| fine	67.412 \| fine	0.539 \| good	1.733 \| good	0.185 \| good
2025-07-29T20:00:00.000Z	73 \| moderate	21.356 \| fine	94.333 \| fine	52.7 \| good	0.504 \| good	1.754 \| good	0.181 \| good
2025-07-29T21:00:00.000Z	69 \| moderate	19.289 \| fine	84.721 \| fine	49.782 \| good	0.47 \| good	1.774 \| good	0.176 \| good
2025-07-29T22:00:00.000Z	67 \| moderate	18.022 \| fine	79.159 \| fine	49.68 \| good	0.503 \| good	2.968 \| good	0.187 \| good
2025-07-29T23:00:00.000Z	69 \| moderate	19.325 \| fine	84.775 \| fine	44.263 \| good	0.536 \| good	4.163 \| good	0.197 \| good
2025-07-30T00:00:00.000Z	62 \| moderate	15.021 \| fine	66.872 \| fine	41.154 \| good	0.569 \| good	5.357 \| good	0.208 \| good
2025-07-30T01:00:00.000Z	60 \| moderate	13.587 \| fine	60.826 \| fine	36.481 \| good	0.642 \| good	7.85 \| good	0.228 \| good
2025-07-30T02:00:00.000Z	58 \| moderate	13.22 \| fine	58.988 \| fine	34.5 \| good	0.716 \| good	10.343 \| good	0.248 \| good
2025-07-30T03:00:00.000Z	58 \| moderate	12.758 \| fine	56.94 \| fine	32.075 \| good	0.789 \| good	12.837 \| good	0.268 \| good
2025-07-30T04:00:00.000Z	54 \| moderate	11.411 \| good	50.787 \| good	27.895 \| good	0.767 \| good	13.262 \| good	0.278 \| good
2025-07-30T05:00:00.000Z	54 \| moderate	11.25 \| good	49.859 \| good	24.225 \| good	0.745 \| good	13.687 \| good	0.288 \| good
2025-07-30T06:00:00.000Z	54 \| moderate	10.845 \| good	48.009 \| good	23.187 \| good	0.723 \| good	14.112 \| good	0.297 \| good
2025-07-30T07:00:00.000Z	54 \| moderate	11.22 \| good	49.734 \| good	23.092 \| good	0.723 \| good	13.806 \| good	0.299 \| good
2025-07-30T08:00:00.000Z	56 \| moderate	12.342 \| fine	55.839 \| fine	21.659 \| good	0.722 \| good	13.5 \| good	0.301 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	12.653 \| fine	56.509 \| fine	19.34 \| good	0.721 \| good	13.193 \| good	0.304 \| good
2025-07-30T10:00:00.000Z	62 \| moderate	14.722 \| fine	66.112 \| fine	16.55 \| good	0.923 \| good	12.616 \| good	0.311 \| good
2025-07-30T11:00:00.000Z	67 \| moderate	17.976 \| fine	78.975 \| fine	23.3 \| good	1.124 \| good	12.038 \| good	0.318 \| good
2025-07-30T12:00:00.000Z	82 \| moderate	25.562 \| fine	111.815 \| fine	35.796 \| good	1.326 \| good	11.461 \| good	0.326 \| good
2025-07-30T13:00:00.000Z	82 \| moderate	26.333 \| fine	114.223 \| fine	43.35 \| good	2.209 \| good	9.615 \| good	0.312 \| good
2025-07-30T14:00:00.000Z	86 \| moderate	27.52 \| fine	119.739 \| fine	49.788 \| good	3.092 \| good	7.769 \| good	0.298 \| good
2025-07-30T15:00:00.000Z	81 \| moderate	25.294 \| fine	110.232 \| fine	56.124 \| fine	3.976 \| good	5.923 \| good	0.284 \| good
2025-07-30T16:00:00.000Z	84 \| moderate	23.976 \| fine	105.013 \| fine	64.871 \| fine	3.362 \| good	4.613 \| good	0.262 \| good
2025-07-30T17:00:00.000Z	122 \| sensitive	27.007 \| fine	117.425 \| fine	76.861 \| moderate	2.747 \| good	3.304 \| good	0.24 \| good
2025-07-30T18:00:00.000Z	154 \| unhealthy	29.154 \| fine	126.828 \| fine	86.969 \| poor	2.133 \| good	1.994 \| good	0.218 \| good
2025-07-30T19:00:00.000Z	147 \| sensitive	29.89 \| fine	129.093 \| fine	84.349 \| moderate	2.146 \| good	2.105 \| good	0.215 \| good
2025-07-30T20:00:00.000Z	100 \| moderate	27.9 \| fine	121.143 \| fine	70.111 \| fine	2.158 \| good	2.215 \| good	0.211 \| good
2025-07-30T21:00:00.000Z	105 \| sensitive	28.416 \| fine	123.104 \| fine	72.453 \| moderate	2.171 \| good	2.325 \| good	0.207 \| good
2025-07-30T22:00:00.000Z	101 \| sensitive	23.439 \| fine	102.55 \| fine	71.421 \| moderate	2.288 \| good	3.43 \| good	0.221 \| good
2025-07-30T23:00:00.000Z	81 \| moderate	25.15 \| fine	109.982 \| fine	63.149 \| fine	2.406 \| good	4.535 \| good	0.234 \| good
2025-07-31T00:00:00.000Z	140 \| sensitive	18.285 \| fine	19.082 \| good	81.974 \| moderate	2.525 \| good	5.658 \| good	0.247 \| good
2025-07-31T01:00:00.000Z	69 \| moderate	19.14 \| fine	84.891 \| fine	48.341 \| good	2.524 \| good	6.234 \| good	0.255 \| good
2025-07-31T02:00:00.000Z	67 \| moderate	17.624 \| fine	77.639 \| fine	45.403 \| good	2.525 \| good	6.829 \| good	0.263 \| good
2025-07-31T03:00:00.000Z	64 \| moderate	15.802 \| fine	70.57 \| fine	44.635 \| good	2.526 \| good	7.423 \| good	0.271 \| good
2025-07-31T04:00:00.000Z	62 \| moderate	15.318 \| fine	68.528 \| fine	42.799 \| good	2.389 \| good	7.264 \| good	0.266 \| good

Westport

Get reliable air quality data to drive your business

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

0.40ppm

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

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 often is air quality information updated for Westport, Connecticut?

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

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

In the past 24 hours, the air quality in Westport, Connecticut was at its worst at 04:00:00 on 2025-07-28.

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

In the last 24 hours, the best air quality in Westport, Connecticut was observed at 10:00:00 on 2025-07-28.

What is the AQI in Westport, Connecticut right now?

As of now, the AQI in Westport, Connecticut is 60, indicating Moderate conditions.

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

Westport, Connecticut air has the highest levels of PM2.5.

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

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

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

PM_2.5 levels in Westport, Connecticut are currently 13.913 μg/m³.

What is the PM₁₀ level in Westport, Connecticut at the moment?

The PM₁₀ concentration in Westport, Connecticut is 56.373 μg/m³ at the moment.

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

The current carbon monoxide (CO) concentration in Westport, Connecticut is 0.358 ppm.

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

Currently, Westport, Connecticut has a sulfur dioxide (SO₂) concentration of 0.582 ppb.

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

The current ozone (O₃) level in Westport, Connecticut at the moment is 30.286 ppm.

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

Nitrogen dioxide (NO₂) level in Westport, Connecticut at the moment is 11.55 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T12:00:00.000Z	54 \| moderate	11.23 \| good	28.521 \| good	17.54 \| good	0.478 \| good	10.24 \| good	0.364 \| good
2025-07-28T13:00:00.000Z	54 \| moderate	10.552 \| good	26.444 \| good	25.398 \| good	0.468 \| good	6.359 \| good	0.326 \| good
2025-07-28T14:00:00.000Z	54 \| moderate	10.702 \| good	29.094 \| good	22.812 \| good	0.295 \| good	3.721 \| good	0.323 \| good
2025-07-28T15:00:00.000Z	52 \| moderate	9.65 \| good	25.85 \| good	21.9 \| good	0.299 \| good	3.676 \| good	0.271 \| good
2025-07-28T16:00:00.000Z	52 \| moderate	9.512 \| good	21.249 \| good	35.896 \| good	0.535 \| good	3.511 \| good	0.18 \| good
2025-07-28T17:00:00.000Z	52 \| moderate	10.224 \| good	28.099 \| good	40.731 \| good	0.539 \| good	3.789 \| good	0.18 \| good
2025-07-28T18:00:00.000Z	52 \| moderate	10.095 \| good	26.96 \| good	40.78 \| good	0.582 \| good	7.742 \| good	0.214 \| good
2025-07-28T19:00:00.000Z	49 \| good	9.499 \| good	26.996 \| good	45.525 \| good	0.435 \| good	4.785 \| good	0.18 \| good
2025-07-28T20:00:00.000Z	52 \| moderate	10.035 \| good	23.779 \| good	46.96 \| good	0.458 \| good	5.051 \| good	0.217 \| good
2025-07-28T21:00:00.000Z	52 \| moderate	9.8 \| good	23.092 \| good	42.679 \| good	0.45 \| good	2.012 \| good	0.252 \| good
2025-07-28T22:00:00.000Z	52 \| moderate	9.551 \| good	25.835 \| good	46.8 \| good	0.281 \| good	1.833 \| good	0.252 \| good
2025-07-28T23:00:00.000Z	52 \| moderate	10.324 \| good	28.022 \| good	50.41 \| good	0.368 \| good	4.312 \| good	0.217 \| good
2025-07-29T00:00:00.000Z	54 \| moderate	10.952 \| good	22.134 \| good	46.373 \| good	0.473 \| good	6.622 \| good	0.266 \| good
2025-07-29T01:00:00.000Z	54 \| moderate	11.069 \| good	21.377 \| good	43.48 \| good	0.454 \| good	4.908 \| good	0.302 \| good
2025-07-29T02:00:00.000Z	56 \| moderate	12.308 \| fine	34.096 \| good	37.572 \| good	0.634 \| good	15.461 \| good	0.292 \| good
2025-07-29T03:00:00.000Z	56 \| moderate	11.949 \| good	29.854 \| good	34.752 \| good	0.529 \| good	12.797 \| good	0.339 \| good
2025-07-29T04:00:00.000Z	56 \| moderate	11.673 \| good	24.662 \| good	34.23 \| good	0.577 \| good	11.419 \| good	0.356 \| good
2025-07-29T05:00:00.000Z	56 \| moderate	12.179 \| fine	32.807 \| good	30.671 \| good	0.934 \| good	16.451 \| good	0.443 \| good
2025-07-29T06:00:00.000Z	56 \| moderate	11.949 \| good	31.555 \| good	22.933 \| good	0.832 \| good	14.298 \| good	0.326 \| good
2025-07-29T07:00:00.000Z	56 \| moderate	11.697 \| good	25.046 \| good	18.691 \| good	0.758 \| good	12.871 \| good	0.43 \| good
2025-07-29T08:00:00.000Z	58 \| moderate	13.012 \| fine	34.733 \| good	15.743 \| good	0.752 \| good	13.122 \| good	0.43 \| good
2025-07-29T09:00:00.000Z	56 \| moderate	12.41 \| fine	28.615 \| good	21.369 \| good	0.752 \| good	11.183 \| good	0.326 \| good
2025-07-29T10:00:00.000Z	58 \| moderate	12.863 \| fine	30.188 \| good	14.279 \| good	0.752 \| good	11.843 \| good	0.426 \| good
2025-07-29T11:00:00.000Z	58 \| moderate	13.275 \| fine	27.896 \| good	16.928 \| good	0.759 \| good	13.142 \| good	0.469 \| good
2025-07-29T12:00:00.000Z	58 \| moderate	13.115 \| fine	23.379 \| good	20.555 \| good	0.742 \| good	11.896 \| good	0.487 \| good
2025-07-29T13:00:00.000Z	60 \| moderate	14.341 \| fine	39.178 \| good	15.021 \| good	0.861 \| good	13.701 \| good	0.575 \| good
2025-07-29T14:00:00.000Z	64 \| moderate	16.372 \| fine	58.578 \| fine	18.323 \| good	1.034 \| good	17.803 \| good	0.431 \| good
2025-07-29T15:00:00.000Z	60 \| moderate	14.448 \| fine	38.906 \| good	24.752 \| good	1.082 \| good	14.654 \| good	0.421 \| good
2025-07-29T16:00:00.000Z	62 \| moderate	14.612 \| fine	40.488 \| good	31.423 \| good	1.016 \| good	13.449 \| good	0.346 \| good
2025-07-29T17:00:00.000Z	62 \| moderate	15.334 \| fine	38.861 \| good	41.314 \| good	0.951 \| good	12.012 \| good	0.315 \| good
2025-07-29T18:00:00.000Z	62 \| moderate	15.16 \| fine	32.273 \| good	58.218 \| fine	0.919 \| good	7.453 \| good	0.392 \| good
2025-07-29T19:00:00.000Z	101 \| sensitive	15.316 \| fine	31.023 \| good	70.862 \| fine	0.8 \| good	7.728 \| good	0.327 \| good
2025-07-29T20:00:00.000Z	61 \| moderate	13.769 \| fine	27.894 \| good	58.439 \| fine	0.881 \| good	13.618 \| good	0.328 \| good
2025-07-29T21:00:00.000Z	77 \| moderate	13.49 \| fine	33.507 \| good	63.103 \| fine	0.86 \| good	12.018 \| good	0.308 \| good
2025-07-29T22:00:00.000Z	74 \| moderate	13.697 \| fine	37.848 \| good	61.61 \| fine	0.998 \| good	2.673 \| good	0.308 \| good
2025-07-29T23:00:00.000Z	74 \| moderate	12.852 \| fine	34.855 \| good	62.245 \| fine	1.025 \| good	2.068 \| good	0.345 \| good
2025-07-30T00:00:00.000Z	97 \| moderate	14.179 \| fine	28.293 \| good	68.81 \| fine	1.05 \| good	4.785 \| good	0.344 \| good
2025-07-30T01:00:00.000Z	93 \| moderate	14.019 \| fine	34.124 \| good	68.037 \| fine	1.04 \| good	4.413 \| good	0.268 \| good
2025-07-30T02:00:00.000Z	84 \| moderate	13.055 \| fine	35.42 \| good	64.525 \| fine	1.434 \| good	5.732 \| good	0.31 \| good
2025-07-30T03:00:00.000Z	73 \| moderate	21.333 \| fine	94.072 \| fine	24.332 \| good	0.946 \| good	9.457 \| good	0.267 \| good
2025-07-30T04:00:00.000Z	60 \| moderate	13.703 \| fine	30.186 \| good	47.418 \| good	1.153 \| good	20.441 \| good	0.253 \| good
2025-07-30T05:00:00.000Z	62 \| moderate	14.725 \| fine	41.459 \| good	48.308 \| good	1.147 \| good	19.311 \| good	0.258 \| good
2025-07-30T06:00:00.000Z	62 \| moderate	14.62 \| fine	37.036 \| good	42.042 \| good	1.025 \| good	12.801 \| good	0.263 \| good
2025-07-30T07:00:00.000Z	60 \| moderate	14.45 \| fine	35.363 \| good	36.838 \| good	0.793 \| good	14.672 \| good	0.232 \| good
2025-07-30T08:00:00.000Z	62 \| moderate	14.619 \| fine	37.306 \| good	28.88 \| good	0.775 \| good	12.883 \| good	0.232 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	13.08 \| fine	33.287 \| good	25.223 \| good	0.584 \| good	13.751 \| good	0.217 \| good
2025-07-30T10:00:00.000Z	56 \| moderate	12.217 \| fine	31.424 \| good	21.337 \| good	0.501 \| good	14.945 \| good	0.285 \| good
2025-07-30T11:00:00.000Z	56 \| moderate	11.95 \| good	52.205 \| good	18.308 \| good	0.709 \| good	19.504 \| good	0.321 \| good
2025-07-29T05:00:00.000Z	62 \| moderate	15.448 \| fine	68.838 \| fine	24.218 \| good	0.808 \| good	14.849 \| good	0.361 \| good
2025-07-29T06:00:00.000Z	64 \| moderate	16.112 \| fine	70.972 \| fine	23.388 \| good	0.81 \| good	15.762 \| good	0.377 \| good
2025-07-29T07:00:00.000Z	66 \| moderate	16.504 \| fine	72.972 \| fine	23.239 \| good	0.823 \| good	14.96 \| good	0.369 \| good
2025-07-29T08:00:00.000Z	66 \| moderate	17.235 \| fine	76.623 \| fine	21.589 \| good	0.836 \| good	14.159 \| good	0.361 \| good
2025-07-29T09:00:00.000Z	67 \| moderate	18.175 \| fine	80.622 \| fine	22.92 \| good	0.849 \| good	13.357 \| good	0.353 \| good
2025-07-29T10:00:00.000Z	67 \| moderate	18.365 \| fine	81.094 \| fine	20.153 \| good	0.876 \| good	11.634 \| good	0.342 \| good
2025-07-29T11:00:00.000Z	71 \| moderate	20.075 \| fine	89.008 \| fine	24 \| good	0.903 \| good	9.911 \| good	0.331 \| good
2025-07-29T12:00:00.000Z	77 \| moderate	23.392 \| fine	101.842 \| fine	37.819 \| good	0.93 \| good	8.188 \| good	0.319 \| good
2025-07-29T13:00:00.000Z	84 \| moderate	27.326 \| fine	119.167 \| fine	46.939 \| good	0.849 \| good	6.599 \| good	0.289 \| good
2025-07-29T14:00:00.000Z	88 \| moderate	28.615 \| fine	123.691 \| fine	50.832 \| good	0.767 \| good	5.01 \| good	0.258 \| good
2025-07-29T15:00:00.000Z	84 \| moderate	26.905 \| fine	117.089 \| fine	58.749 \| fine	0.686 \| good	3.42 \| good	0.228 \| good
2025-07-29T16:00:00.000Z	84 \| moderate	25.378 \| fine	110.727 \| fine	64.64 \| fine	0.649 \| good	2.851 \| good	0.215 \| good
2025-07-29T17:00:00.000Z	90 \| moderate	25.302 \| fine	110.553 \| fine	66.574 \| fine	0.611 \| good	2.282 \| good	0.202 \| good
2025-07-29T18:00:00.000Z	100 \| moderate	24.777 \| fine	108.479 \| fine	69.714 \| fine	0.574 \| good	1.713 \| good	0.19 \| good
2025-07-29T19:00:00.000Z	90 \| moderate	24.474 \| fine	106.233 \| fine	67.412 \| fine	0.539 \| good	1.733 \| good	0.185 \| good
2025-07-29T20:00:00.000Z	73 \| moderate	21.356 \| fine	94.333 \| fine	52.7 \| good	0.504 \| good	1.754 \| good	0.181 \| good
2025-07-29T21:00:00.000Z	69 \| moderate	19.289 \| fine	84.721 \| fine	49.782 \| good	0.47 \| good	1.774 \| good	0.176 \| good
2025-07-29T22:00:00.000Z	67 \| moderate	18.022 \| fine	79.159 \| fine	49.68 \| good	0.503 \| good	2.968 \| good	0.187 \| good
2025-07-29T23:00:00.000Z	69 \| moderate	19.325 \| fine	84.775 \| fine	44.263 \| good	0.536 \| good	4.163 \| good	0.197 \| good
2025-07-30T00:00:00.000Z	62 \| moderate	15.021 \| fine	66.872 \| fine	41.154 \| good	0.569 \| good	5.357 \| good	0.208 \| good
2025-07-30T01:00:00.000Z	60 \| moderate	13.587 \| fine	60.826 \| fine	36.481 \| good	0.642 \| good	7.85 \| good	0.228 \| good
2025-07-30T02:00:00.000Z	58 \| moderate	13.22 \| fine	58.988 \| fine	34.5 \| good	0.716 \| good	10.343 \| good	0.248 \| good
2025-07-30T03:00:00.000Z	58 \| moderate	12.758 \| fine	56.94 \| fine	32.075 \| good	0.789 \| good	12.837 \| good	0.268 \| good
2025-07-30T04:00:00.000Z	54 \| moderate	11.411 \| good	50.787 \| good	27.895 \| good	0.767 \| good	13.262 \| good	0.278 \| good
2025-07-30T05:00:00.000Z	54 \| moderate	11.25 \| good	49.859 \| good	24.225 \| good	0.745 \| good	13.687 \| good	0.288 \| good
2025-07-30T06:00:00.000Z	54 \| moderate	10.845 \| good	48.009 \| good	23.187 \| good	0.723 \| good	14.112 \| good	0.297 \| good
2025-07-30T07:00:00.000Z	54 \| moderate	11.22 \| good	49.734 \| good	23.092 \| good	0.723 \| good	13.806 \| good	0.299 \| good
2025-07-30T08:00:00.000Z	56 \| moderate	12.342 \| fine	55.839 \| fine	21.659 \| good	0.722 \| good	13.5 \| good	0.301 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	12.653 \| fine	56.509 \| fine	19.34 \| good	0.721 \| good	13.193 \| good	0.304 \| good
2025-07-30T10:00:00.000Z	62 \| moderate	14.722 \| fine	66.112 \| fine	16.55 \| good	0.923 \| good	12.616 \| good	0.311 \| good
2025-07-30T11:00:00.000Z	67 \| moderate	17.976 \| fine	78.975 \| fine	23.3 \| good	1.124 \| good	12.038 \| good	0.318 \| good
2025-07-30T12:00:00.000Z	82 \| moderate	25.562 \| fine	111.815 \| fine	35.796 \| good	1.326 \| good	11.461 \| good	0.326 \| good
2025-07-30T13:00:00.000Z	82 \| moderate	26.333 \| fine	114.223 \| fine	43.35 \| good	2.209 \| good	9.615 \| good	0.312 \| good
2025-07-30T14:00:00.000Z	86 \| moderate	27.52 \| fine	119.739 \| fine	49.788 \| good	3.092 \| good	7.769 \| good	0.298 \| good
2025-07-30T15:00:00.000Z	81 \| moderate	25.294 \| fine	110.232 \| fine	56.124 \| fine	3.976 \| good	5.923 \| good	0.284 \| good
2025-07-30T16:00:00.000Z	84 \| moderate	23.976 \| fine	105.013 \| fine	64.871 \| fine	3.362 \| good	4.613 \| good	0.262 \| good
2025-07-30T17:00:00.000Z	122 \| sensitive	27.007 \| fine	117.425 \| fine	76.861 \| moderate	2.747 \| good	3.304 \| good	0.24 \| good
2025-07-30T18:00:00.000Z	154 \| unhealthy	29.154 \| fine	126.828 \| fine	86.969 \| poor	2.133 \| good	1.994 \| good	0.218 \| good
2025-07-30T19:00:00.000Z	147 \| sensitive	29.89 \| fine	129.093 \| fine	84.349 \| moderate	2.146 \| good	2.105 \| good	0.215 \| good
2025-07-30T20:00:00.000Z	100 \| moderate	27.9 \| fine	121.143 \| fine	70.111 \| fine	2.158 \| good	2.215 \| good	0.211 \| good
2025-07-30T21:00:00.000Z	105 \| sensitive	28.416 \| fine	123.104 \| fine	72.453 \| moderate	2.171 \| good	2.325 \| good	0.207 \| good
2025-07-30T22:00:00.000Z	101 \| sensitive	23.439 \| fine	102.55 \| fine	71.421 \| moderate	2.288 \| good	3.43 \| good	0.221 \| good
2025-07-30T23:00:00.000Z	81 \| moderate	25.15 \| fine	109.982 \| fine	63.149 \| fine	2.406 \| good	4.535 \| good	0.234 \| good
2025-07-31T00:00:00.000Z	140 \| sensitive	18.285 \| fine	19.082 \| good	81.974 \| moderate	2.525 \| good	5.658 \| good	0.247 \| good
2025-07-31T01:00:00.000Z	69 \| moderate	19.14 \| fine	84.891 \| fine	48.341 \| good	2.524 \| good	6.234 \| good	0.255 \| good
2025-07-31T02:00:00.000Z	67 \| moderate	17.624 \| fine	77.639 \| fine	45.403 \| good	2.525 \| good	6.829 \| good	0.263 \| good
2025-07-31T03:00:00.000Z	64 \| moderate	15.802 \| fine	70.57 \| fine	44.635 \| good	2.526 \| good	7.423 \| good	0.271 \| good
2025-07-31T04:00:00.000Z	62 \| moderate	15.318 \| fine	68.528 \| fine	42.799 \| good	2.389 \| good	7.264 \| good	0.266 \| good

Live air quality index in Westport, Connecticut today

Major air pollutants in Westport, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Westport, Connecticut air quality forecast and history

Get reliable air quality data to drive your business

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

Air quality in nearby cities

Norwalk, Connecticut

Weston, Connecticut

Fairfield, Connecticut

Wilton, Connecticut

New Canaan, Connecticut

Darien, Connecticut

How accurate is Connecticut, USA air quality data?

Air quality levels in US

Frequently asked questions

How often is air quality information updated for Westport, Connecticut?

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

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

What is the AQI in Westport, Connecticut right now?

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

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

What is the PM2.5 level in Westport, Connecticut at the moment?

What is the PM10 level in Westport, Connecticut at the moment?

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

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

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

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

What is the PM₁₀ level in Westport, Connecticut at the moment?

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

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

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