What is the sulfur dioxide (SO2) level in Westchester, Illinois at the moment?

Currently, Westchester, Illinois has a sulfur dioxide (SO2) concentration of 0.501 ppb.

What is the ozone (O3) level in Westchester, Illinois at the moment?

The current ozone (O3) level in Westchester, Illinois at the moment is 17.976 ppm.

What is the nitrogen dioxide (NO2) level in Westchester, Illinois at the moment?

Nitrogen dioxide (NO2) level in Westchester, Illinois at the moment is 6.402 ppb.

Live air quality index in Westchester, Illinois today

Q: What is the PM2.5 level in Westchester, Illinois at the moment?

PM2.5 levels in Westchester, Illinois are currently 10.973 μg/m3.

Q: What is the PM10 level in Westchester, Illinois at the moment?

The PM10 concentration in Westchester, Illinois is 49.427 μg/m3 at the moment.

Stay updated with real-time air quality in Westchester, Illinois 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

Westchester, Illinois

Last updated: ... (Local time)

Major air pollutants in Westchester, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

10.97 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

49.43 μg/m³

155

255

425

605+

Ozone (O₃)

17.98 ppb

201

201+

Sulfur Dioxide (SO₂)

0.50 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.40 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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

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Westchester, Illinois

Scroll To Air Quality Map

Track live Westchester, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-25T22:00:00.000Z	31 \| good	4.463 \| good	19.281 \| good	33.565 \| good	0.569 \| good	1.826 \| good	0.157 \| good
2026-04-25T23:00:00.000Z	31 \| good	4.424 \| good	19.396 \| good	33.397 \| good	0.573 \| good	2.048 \| good	0.195 \| good
2026-04-26T00:00:00.000Z	31 \| good	4.592 \| good	19.565 \| good	34.457 \| good	0.514 \| good	2.323 \| good	0.162 \| good
2026-04-26T01:00:00.000Z	31 \| good	4.899 \| good	21.141 \| good	33.887 \| good	0.327 \| good	5.68 \| good	0.221 \| good
2026-04-26T02:00:00.000Z	31 \| good	5.057 \| good	21.893 \| good	32.609 \| good	0.397 \| good	9.398 \| good	0.221 \| good
2026-04-26T03:00:00.000Z	27 \| good	4.948 \| good	21.834 \| good	28.852 \| good	0.363 \| good	7.55 \| good	0.244 \| good
2026-04-26T04:00:00.000Z	27 \| good	5.013 \| good	21.815 \| good	28.21 \| good	0.344 \| good	6.894 \| good	0.229 \| good
2026-04-26T05:00:00.000Z	28 \| good	4.228 \| good	18.516 \| good	30.201 \| good	0.346 \| good	6.701 \| good	0.195 \| good
2026-04-26T06:00:00.000Z	27 \| good	4.186 \| good	18.489 \| good	29.219 \| good	0.333 \| good	4.585 \| good	0.195 \| good
2026-04-26T07:00:00.000Z	29 \| good	4.049 \| good	16.353 \| good	30.56 \| good	0.516 \| good	3.55 \| good	0.187 \| good
2026-04-26T08:00:00.000Z	27 \| good	5.201 \| good	16.832 \| good	28.263 \| good	0.41 \| good	3.03 \| good	0.154 \| good
2026-04-26T09:00:00.000Z	33 \| good	5.998 \| good	17.893 \| good	25.03 \| good	0.444 \| good	2.506 \| good	0.162 \| good
2026-04-26T10:00:00.000Z	33 \| good	5.859 \| good	18.04 \| good	24.504 \| good	0.353 \| good	6.567 \| good	0.157 \| good
2026-04-26T11:00:00.000Z	33 \| good	5.852 \| good	25.914 \| good	23.608 \| good	0.53 \| good	7.73 \| good	0.154 \| good
2026-04-26T12:00:00.000Z	52 \| moderate	9.573 \| good	42.024 \| good	22.945 \| good	0.558 \| good	4.43 \| good	0.154 \| good
2026-04-26T13:00:00.000Z	60 \| moderate	13.628 \| fine	62.051 \| fine	21.384 \| good	0.522 \| good	3.394 \| good	0.154 \| good
2026-04-26T14:00:00.000Z	67 \| moderate	18.266 \| fine	77.778 \| fine	24.24 \| good	0.572 \| good	1.464 \| good	0.165 \| good
2026-04-26T15:00:00.000Z	62 \| moderate	14.523 \| fine	64.066 \| fine	26.701 \| good	0.637 \| good	1.188 \| good	0.154 \| good
2026-04-26T16:00:00.000Z	62 \| moderate	14.579 \| fine	65.099 \| fine	27.432 \| good	0.694 \| good	1.525 \| good	0.154 \| good
2026-04-26T17:00:00.000Z	54 \| moderate	11.058 \| good	49.185 \| good	28.839 \| good	0.867 \| good	1.729 \| good	0.162 \| good
2026-04-26T18:00:00.000Z	56 \| moderate	11.659 \| good	50.383 \| good	30.605 \| good	2.143 \| good	1.357 \| good	0.162 \| good
2026-04-26T19:00:00.000Z	56 \| moderate	11.879 \| good	53.628 \| good	34.302 \| good	2.094 \| good	1.454 \| good	0.154 \| good
2026-04-26T20:00:00.000Z	54 \| moderate	11.197 \| good	49.971 \| good	35.44 \| good	2.394 \| good	1.395 \| good	0.154 \| good
2026-04-26T21:00:00.000Z	54 \| moderate	11.097 \| good	48.932 \| good	37.25 \| good	2.303 \| good	1.369 \| good	0.154 \| good
2026-04-26T22:00:00.000Z	54 \| moderate	11.35 \| good	48.907 \| good	37.567 \| good	1.607 \| good	2.391 \| good	0.162 \| good
2026-04-26T23:00:00.000Z	56 \| moderate	11.565 \| good	51.101 \| good	39.989 \| good	0.87 \| good	3.945 \| good	0.162 \| good
2026-04-27T00:00:00.000Z	56 \| moderate	11.92 \| good	53.394 \| good	39.076 \| good	0.709 \| good	5.726 \| good	0.157 \| good
2026-04-27T01:00:00.000Z	56 \| moderate	11.704 \| good	50.599 \| good	38.15 \| good	0.431 \| good	5.42 \| good	0.162 \| good
2026-04-27T02:00:00.000Z	56 \| moderate	11.92 \| good	53.401 \| good	36.212 \| good	0.526 \| good	8.728 \| good	0.177 \| good
2026-04-27T03:00:00.000Z	38 \| good	6.794 \| good	30.027 \| good	32.576 \| good	1.221 \| good	12.203 \| good	0.215 \| good
2026-04-27T04:00:00.000Z	54 \| moderate	11.268 \| good	49.848 \| good	33.757 \| good	0.588 \| good	10.184 \| good	0.162 \| good
2026-04-27T05:00:00.000Z	54 \| moderate	10.652 \| good	46.674 \| good	31.136 \| good	2.441 \| good	5.51 \| good	0.198 \| good
2026-04-27T06:00:00.000Z	54 \| moderate	10.811 \| good	45.174 \| good	30.479 \| good	1.741 \| good	2.013 \| good	0.162 \| good
2026-04-27T07:00:00.000Z	54 \| moderate	10.965 \| good	40.606 \| good	29.185 \| good	0.62 \| good	3.119 \| good	0.162 \| good
2026-04-27T08:00:00.000Z	52 \| moderate	10.482 \| good	37.913 \| good	26.673 \| good	0.361 \| good	2.402 \| good	0.157 \| good
2026-04-27T09:00:00.000Z	52 \| moderate	9.529 \| good	34.278 \| good	25.576 \| good	0.366 \| good	1.838 \| good	0.157 \| good
2026-04-27T10:00:00.000Z	49 \| good	9.496 \| good	34.574 \| good	24.997 \| good	0.321 \| good	2.13 \| good	0.157 \| good
2026-04-27T11:00:00.000Z	49 \| good	9.305 \| good	41.618 \| good	23.519 \| good	0.424 \| good	2.575 \| good	0.162 \| good
2026-04-27T12:00:00.000Z	49 \| good	9.432 \| good	41.066 \| good	21.169 \| good	0.426 \| good	2.991 \| good	0.157 \| good
2026-04-27T13:00:00.000Z	49 \| good	9.213 \| good	40.243 \| good	18.858 \| good	0.503 \| good	7.473 \| good	0.162 \| good
2026-04-27T14:00:00.000Z	49 \| good	9.414 \| good	41.622 \| good	19.204 \| good	0.488 \| good	5.048 \| good	0.182 \| good
2026-04-27T15:00:00.000Z	49 \| good	9.424 \| good	41.785 \| good	18.836 \| good	0.491 \| good	5.721 \| good	0.177 \| good
2026-04-27T16:00:00.000Z	52 \| moderate	9.511 \| good	41.31 \| good	17.977 \| good	0.524 \| good	4.238 \| good	0.177 \| good
2026-04-27T17:00:00.000Z	52 \| moderate	9.633 \| good	42.488 \| good	17.297 \| good	0.517 \| good	3.592 \| good	0.177 \| good
2026-04-27T18:00:00.000Z	52 \| moderate	9.701 \| good	42.885 \| good	16.236 \| good	0.509 \| good	4.186 \| good	0.177 \| good
2026-04-27T19:00:00.000Z	54 \| moderate	10.875 \| good	48.692 \| good	13.837 \| good	0.392 \| good	4.344 \| good	0.182 \| good
2026-04-27T20:00:00.000Z	52 \| moderate	9.7 \| good	43.708 \| good	15.108 \| good	0.465 \| good	6.192 \| good	0.177 \| good
2026-04-27T21:00:00.000Z	49 \| good	8.964 \| good	39.091 \| good	18.379 \| good	0.432 \| good	3.215 \| good	0.185 \| good
2026-04-27T21:00:00.000Z	54 \| moderate	10.973 \| good	49.427 \| good	17.976 \| good	0.501 \| good	6.402 \| good	0.179 \| good
2026-04-27T22:00:00.000Z	44 \| good	8.273 \| good	36.012 \| good	38.366 \| good	1.363 \| good	5.437 \| good	0.178 \| good
2026-04-27T23:00:00.000Z	49 \| good	8.721 \| good	37.977 \| good	42.147 \| good	1.089 \| good	5.816 \| good	0.177 \| good
2026-04-28T00:00:00.000Z	46 \| good	7.863 \| good	34.042 \| good	50.386 \| good	0.814 \| good	6.194 \| good	0.175 \| good
2026-04-28T01:00:00.000Z	50 \| good	7.812 \| good	34.031 \| good	54.498 \| good	0.741 \| good	5.984 \| good	0.17 \| good
2026-04-28T02:00:00.000Z	49 \| good	7.745 \| good	33.993 \| good	53.321 \| good	0.667 \| good	5.774 \| good	0.165 \| good
2026-04-28T03:00:00.000Z	50 \| good	7.132 \| good	31.963 \| good	53.781 \| good	0.594 \| good	5.564 \| good	0.159 \| good
2026-04-28T04:00:00.000Z	48 \| good	7.212 \| good	31.981 \| good	51.941 \| good	0.577 \| good	5.032 \| good	0.157 \| good
2026-04-28T05:00:00.000Z	45 \| good	7.035 \| good	31.019 \| good	49.102 \| good	0.561 \| good	4.5 \| good	0.155 \| good
2026-04-28T06:00:00.000Z	48 \| good	5.057 \| good	22.029 \| good	51.888 \| good	0.544 \| good	3.968 \| good	0.152 \| good
2026-04-28T07:00:00.000Z	44 \| good	4.148 \| good	18.065 \| good	48.214 \| good	0.506 \| good	3.586 \| good	0.153 \| good
2026-04-28T08:00:00.000Z	36 \| good	4.746 \| good	21.014 \| good	39.066 \| good	0.468 \| good	3.205 \| good	0.153 \| good
2026-04-28T09:00:00.000Z	33 \| good	6.193 \| good	27.049 \| good	30.004 \| good	0.431 \| good	2.823 \| good	0.153 \| good
2026-04-28T10:00:00.000Z	49 \| good	9.493 \| good	42.035 \| good	33.484 \| good	0.441 \| good	2.831 \| good	0.153 \| good
2026-04-28T11:00:00.000Z	49 \| good	9.237 \| good	41.023 \| good	29.555 \| good	0.452 \| good	2.839 \| good	0.152 \| good
2026-04-28T12:00:00.000Z	52 \| moderate	10.279 \| good	45.035 \| good	27.826 \| good	0.463 \| good	2.847 \| good	0.152 \| good
2026-04-28T13:00:00.000Z	49 \| good	9.488 \| good	42.032 \| good	24.639 \| good	0.53 \| good	2.775 \| good	0.153 \| good
2026-04-28T14:00:00.000Z	49 \| good	8.819 \| good	38.975 \| good	25.467 \| good	0.597 \| good	2.703 \| good	0.155 \| good
2026-04-28T15:00:00.000Z	44 \| good	7.661 \| good	33.958 \| good	29.356 \| good	0.664 \| good	2.631 \| good	0.156 \| good
2026-04-28T16:00:00.000Z	38 \| good	6.546 \| good	29.018 \| good	34.191 \| good	0.638 \| good	2.381 \| good	0.155 \| good
2026-04-28T17:00:00.000Z	38 \| good	7.354 \| good	32.035 \| good	38.638 \| good	0.612 \| good	2.131 \| good	0.154 \| good
2026-04-28T18:00:00.000Z	49 \| good	9.3 \| good	41.043 \| good	43.78 \| good	0.586 \| good	1.881 \| good	0.153 \| good
2026-04-28T19:00:00.000Z	44 \| good	7.736 \| good	34.008 \| good	43.726 \| good	0.609 \| good	1.993 \| good	0.153 \| good
2026-04-28T20:00:00.000Z	44 \| good	8.394 \| good	36.997 \| good	46.841 \| good	0.632 \| good	2.106 \| good	0.152 \| good
2026-04-28T21:00:00.000Z	52 \| moderate	9.631 \| good	42.993 \| good	45.419 \| good	0.655 \| good	2.219 \| good	0.152 \| good
2026-04-28T22:00:00.000Z	52 \| moderate	10.012 \| good	44.952 \| good	43.884 \| good	0.705 \| good	4.762 \| good	0.163 \| good
2026-04-28T23:00:00.000Z	49 \| good	9.008 \| good	40.946 \| good	43.358 \| good	0.756 \| good	7.306 \| good	0.175 \| good
2026-04-29T00:00:00.000Z	49 \| good	9.493 \| good	42.04 \| good	33.544 \| good	0.806 \| good	9.85 \| good	0.187 \| good
2026-04-29T01:00:00.000Z	60 \| moderate	13.926 \| fine	62.886 \| fine	24.467 \| good	0.992 \| good	14.004 \| good	0.206 \| good
2026-04-29T02:00:00.000Z	62 \| moderate	14.76 \| fine	65.031 \| fine	24.478 \| good	1.179 \| good	18.158 \| good	0.225 \| good
2026-04-29T03:00:00.000Z	62 \| moderate	14.865 \| fine	66.964 \| fine	25.285 \| good	1.366 \| good	22.311 \| good	0.244 \| good
2026-04-29T04:00:00.000Z	58 \| moderate	13.451 \| fine	60.875 \| fine	26.049 \| good	1.478 \| good	22.48 \| good	0.243 \| good
2026-04-29T05:00:00.000Z	62 \| moderate	15.049 \| fine	66.871 \| fine	19.939 \| good	1.591 \| good	22.648 \| good	0.243 \| good
2026-04-29T06:00:00.000Z	64 \| moderate	16.311 \| fine	72.897 \| fine	19.894 \| good	1.703 \| good	22.816 \| good	0.243 \| good
2026-04-29T07:00:00.000Z	54 \| moderate	10.529 \| good	47.052 \| good	35.161 \| good	1.672 \| good	22.084 \| good	0.234 \| good
2026-04-29T08:00:00.000Z	33 \| good	6.185 \| good	27.067 \| good	34.941 \| good	1.642 \| good	21.352 \| good	0.226 \| good
2026-04-29T09:00:00.000Z	29 \| good	5.476 \| good	23.143 \| good	31.237 \| good	1.612 \| good	20.621 \| good	0.218 \| good
2026-04-29T10:00:00.000Z	38 \| good	7.321 \| good	32.123 \| good	30.208 \| good	1.49 \| good	17.595 \| good	0.208 \| good
2026-04-29T11:00:00.000Z	44 \| good	7.698 \| good	34.062 \| good	27.027 \| good	1.368 \| good	14.569 \| good	0.197 \| good
2026-04-29T12:00:00.000Z	27 \| good	5.457 \| good	23.024 \| good	28.089 \| good	1.247 \| good	11.544 \| good	0.187 \| good
2026-04-29T13:00:00.000Z	27 \| good	4.708 \| good	20.969 \| good	27.452 \| good	1.296 \| good	9.453 \| good	0.182 \| good
2026-04-29T14:00:00.000Z	26 \| good	3.363 \| good	14.977 \| good	28.456 \| good	1.346 \| good	7.363 \| good	0.177 \| good
2026-04-29T15:00:00.000Z	31 \| good	2.158 \| good	9 \| good	32.617 \| good	1.396 \| good	5.272 \| good	0.172 \| good
2026-04-29T16:00:00.000Z	31 \| good	2.104 \| good	8.995 \| good	33.893 \| good	1.265 \| good	4.687 \| good	0.166 \| good
2026-04-29T17:00:00.000Z	31 \| good	3.11 \| good	13.947 \| good	34.478 \| good	1.134 \| good	4.102 \| good	0.16 \| good
2026-04-29T18:00:00.000Z	33 \| good	4.236 \| good	18.932 \| good	35.901 \| good	1.004 \| good	3.517 \| good	0.153 \| good
2026-04-29T19:00:00.000Z	32 \| good	3.126 \| good	13.932 \| good	35.151 \| good	0.948 \| good	3.641 \| good	0.152 \| good
2026-04-29T20:00:00.000Z	31 \| good	2.801 \| good	11.958 \| good	33.219 \| good	0.893 \| good	3.765 \| good	0.15 \| good
2026-04-29T21:00:00.000Z	32 \| good	3.784 \| good	16.062 \| good	34.658 \| good	0.838 \| good	3.889 \| good	0.148 \| good

Westchester

Get reliable air quality data to drive your business

Westchester, Illinois air quality map: Stay updated on AQI near you

0.18ppm

How accurate is Illinois, USA air quality data?

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

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Westchester, Illinois?

The air quality information for Westchester, Illinois is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Westchester, Illinois at its worst?

In the past 24 hours, the air quality in Westchester, Illinois was at its worst at 02:00:00 on 2026-04-27.

When did Westchester, Illinois experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Westchester, Illinois was observed at 03:00:00 on 2026-04-27.

What is the AQI in Westchester, Illinois right now?

As of now, the AQI in Westchester, Illinois is 54, indicating Moderate conditions.

What is the most common type of pollution in Westchester, Illinois?

Westchester, Illinois air has the highest levels of PM2.5.

What should I do in case of poor air quality in Westchester, Illinois?

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

What is the PM_2.5 level in Westchester, Illinois at the moment?

PM_2.5 levels in Westchester, Illinois are currently 10.973 μg/m³.

What is the PM₁₀ level in Westchester, Illinois at the moment?

The PM₁₀ concentration in Westchester, Illinois is 49.427 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Westchester, Illinois at the moment?

The current carbon monoxide (CO) concentration in Westchester, Illinois is 0.179 ppm.

What is the sulfur dioxide (SO₂) level in Westchester, Illinois at the moment?

Currently, Westchester, Illinois has a sulfur dioxide (SO₂) concentration of 0.501 ppb.

What is the ozone (O₃) level in Westchester, Illinois at the moment?

The current ozone (O₃) level in Westchester, Illinois at the moment is 17.976 ppm.

What is the nitrogen dioxide (NO₂) level in Westchester, Illinois at the moment?

Nitrogen dioxide (NO₂) level in Westchester, Illinois at the moment is 6.402 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-25T22:00:00.000Z	31 \| good	4.463 \| good	19.281 \| good	33.565 \| good	0.569 \| good	1.826 \| good	0.157 \| good
2026-04-25T23:00:00.000Z	31 \| good	4.424 \| good	19.396 \| good	33.397 \| good	0.573 \| good	2.048 \| good	0.195 \| good
2026-04-26T00:00:00.000Z	31 \| good	4.592 \| good	19.565 \| good	34.457 \| good	0.514 \| good	2.323 \| good	0.162 \| good
2026-04-26T01:00:00.000Z	31 \| good	4.899 \| good	21.141 \| good	33.887 \| good	0.327 \| good	5.68 \| good	0.221 \| good
2026-04-26T02:00:00.000Z	31 \| good	5.057 \| good	21.893 \| good	32.609 \| good	0.397 \| good	9.398 \| good	0.221 \| good
2026-04-26T03:00:00.000Z	27 \| good	4.948 \| good	21.834 \| good	28.852 \| good	0.363 \| good	7.55 \| good	0.244 \| good
2026-04-26T04:00:00.000Z	27 \| good	5.013 \| good	21.815 \| good	28.21 \| good	0.344 \| good	6.894 \| good	0.229 \| good
2026-04-26T05:00:00.000Z	28 \| good	4.228 \| good	18.516 \| good	30.201 \| good	0.346 \| good	6.701 \| good	0.195 \| good
2026-04-26T06:00:00.000Z	27 \| good	4.186 \| good	18.489 \| good	29.219 \| good	0.333 \| good	4.585 \| good	0.195 \| good
2026-04-26T07:00:00.000Z	29 \| good	4.049 \| good	16.353 \| good	30.56 \| good	0.516 \| good	3.55 \| good	0.187 \| good
2026-04-26T08:00:00.000Z	27 \| good	5.201 \| good	16.832 \| good	28.263 \| good	0.41 \| good	3.03 \| good	0.154 \| good
2026-04-26T09:00:00.000Z	33 \| good	5.998 \| good	17.893 \| good	25.03 \| good	0.444 \| good	2.506 \| good	0.162 \| good
2026-04-26T10:00:00.000Z	33 \| good	5.859 \| good	18.04 \| good	24.504 \| good	0.353 \| good	6.567 \| good	0.157 \| good
2026-04-26T11:00:00.000Z	33 \| good	5.852 \| good	25.914 \| good	23.608 \| good	0.53 \| good	7.73 \| good	0.154 \| good
2026-04-26T12:00:00.000Z	52 \| moderate	9.573 \| good	42.024 \| good	22.945 \| good	0.558 \| good	4.43 \| good	0.154 \| good
2026-04-26T13:00:00.000Z	60 \| moderate	13.628 \| fine	62.051 \| fine	21.384 \| good	0.522 \| good	3.394 \| good	0.154 \| good
2026-04-26T14:00:00.000Z	67 \| moderate	18.266 \| fine	77.778 \| fine	24.24 \| good	0.572 \| good	1.464 \| good	0.165 \| good
2026-04-26T15:00:00.000Z	62 \| moderate	14.523 \| fine	64.066 \| fine	26.701 \| good	0.637 \| good	1.188 \| good	0.154 \| good
2026-04-26T16:00:00.000Z	62 \| moderate	14.579 \| fine	65.099 \| fine	27.432 \| good	0.694 \| good	1.525 \| good	0.154 \| good
2026-04-26T17:00:00.000Z	54 \| moderate	11.058 \| good	49.185 \| good	28.839 \| good	0.867 \| good	1.729 \| good	0.162 \| good
2026-04-26T18:00:00.000Z	56 \| moderate	11.659 \| good	50.383 \| good	30.605 \| good	2.143 \| good	1.357 \| good	0.162 \| good
2026-04-26T19:00:00.000Z	56 \| moderate	11.879 \| good	53.628 \| good	34.302 \| good	2.094 \| good	1.454 \| good	0.154 \| good
2026-04-26T20:00:00.000Z	54 \| moderate	11.197 \| good	49.971 \| good	35.44 \| good	2.394 \| good	1.395 \| good	0.154 \| good
2026-04-26T21:00:00.000Z	54 \| moderate	11.097 \| good	48.932 \| good	37.25 \| good	2.303 \| good	1.369 \| good	0.154 \| good
2026-04-26T22:00:00.000Z	54 \| moderate	11.35 \| good	48.907 \| good	37.567 \| good	1.607 \| good	2.391 \| good	0.162 \| good
2026-04-26T23:00:00.000Z	56 \| moderate	11.565 \| good	51.101 \| good	39.989 \| good	0.87 \| good	3.945 \| good	0.162 \| good
2026-04-27T00:00:00.000Z	56 \| moderate	11.92 \| good	53.394 \| good	39.076 \| good	0.709 \| good	5.726 \| good	0.157 \| good
2026-04-27T01:00:00.000Z	56 \| moderate	11.704 \| good	50.599 \| good	38.15 \| good	0.431 \| good	5.42 \| good	0.162 \| good
2026-04-27T02:00:00.000Z	56 \| moderate	11.92 \| good	53.401 \| good	36.212 \| good	0.526 \| good	8.728 \| good	0.177 \| good
2026-04-27T03:00:00.000Z	38 \| good	6.794 \| good	30.027 \| good	32.576 \| good	1.221 \| good	12.203 \| good	0.215 \| good
2026-04-27T04:00:00.000Z	54 \| moderate	11.268 \| good	49.848 \| good	33.757 \| good	0.588 \| good	10.184 \| good	0.162 \| good
2026-04-27T05:00:00.000Z	54 \| moderate	10.652 \| good	46.674 \| good	31.136 \| good	2.441 \| good	5.51 \| good	0.198 \| good
2026-04-27T06:00:00.000Z	54 \| moderate	10.811 \| good	45.174 \| good	30.479 \| good	1.741 \| good	2.013 \| good	0.162 \| good
2026-04-27T07:00:00.000Z	54 \| moderate	10.965 \| good	40.606 \| good	29.185 \| good	0.62 \| good	3.119 \| good	0.162 \| good
2026-04-27T08:00:00.000Z	52 \| moderate	10.482 \| good	37.913 \| good	26.673 \| good	0.361 \| good	2.402 \| good	0.157 \| good
2026-04-27T09:00:00.000Z	52 \| moderate	9.529 \| good	34.278 \| good	25.576 \| good	0.366 \| good	1.838 \| good	0.157 \| good
2026-04-27T10:00:00.000Z	49 \| good	9.496 \| good	34.574 \| good	24.997 \| good	0.321 \| good	2.13 \| good	0.157 \| good
2026-04-27T11:00:00.000Z	49 \| good	9.305 \| good	41.618 \| good	23.519 \| good	0.424 \| good	2.575 \| good	0.162 \| good
2026-04-27T12:00:00.000Z	49 \| good	9.432 \| good	41.066 \| good	21.169 \| good	0.426 \| good	2.991 \| good	0.157 \| good
2026-04-27T13:00:00.000Z	49 \| good	9.213 \| good	40.243 \| good	18.858 \| good	0.503 \| good	7.473 \| good	0.162 \| good
2026-04-27T14:00:00.000Z	49 \| good	9.414 \| good	41.622 \| good	19.204 \| good	0.488 \| good	5.048 \| good	0.182 \| good
2026-04-27T15:00:00.000Z	49 \| good	9.424 \| good	41.785 \| good	18.836 \| good	0.491 \| good	5.721 \| good	0.177 \| good
2026-04-27T16:00:00.000Z	52 \| moderate	9.511 \| good	41.31 \| good	17.977 \| good	0.524 \| good	4.238 \| good	0.177 \| good
2026-04-27T17:00:00.000Z	52 \| moderate	9.633 \| good	42.488 \| good	17.297 \| good	0.517 \| good	3.592 \| good	0.177 \| good
2026-04-27T18:00:00.000Z	52 \| moderate	9.701 \| good	42.885 \| good	16.236 \| good	0.509 \| good	4.186 \| good	0.177 \| good
2026-04-27T19:00:00.000Z	54 \| moderate	10.875 \| good	48.692 \| good	13.837 \| good	0.392 \| good	4.344 \| good	0.182 \| good
2026-04-27T20:00:00.000Z	52 \| moderate	9.7 \| good	43.708 \| good	15.108 \| good	0.465 \| good	6.192 \| good	0.177 \| good
2026-04-27T21:00:00.000Z	49 \| good	8.964 \| good	39.091 \| good	18.379 \| good	0.432 \| good	3.215 \| good	0.185 \| good
2026-04-27T21:00:00.000Z	54 \| moderate	10.973 \| good	49.427 \| good	17.976 \| good	0.501 \| good	6.402 \| good	0.179 \| good
2026-04-27T22:00:00.000Z	44 \| good	8.273 \| good	36.012 \| good	38.366 \| good	1.363 \| good	5.437 \| good	0.178 \| good
2026-04-27T23:00:00.000Z	49 \| good	8.721 \| good	37.977 \| good	42.147 \| good	1.089 \| good	5.816 \| good	0.177 \| good
2026-04-28T00:00:00.000Z	46 \| good	7.863 \| good	34.042 \| good	50.386 \| good	0.814 \| good	6.194 \| good	0.175 \| good
2026-04-28T01:00:00.000Z	50 \| good	7.812 \| good	34.031 \| good	54.498 \| good	0.741 \| good	5.984 \| good	0.17 \| good
2026-04-28T02:00:00.000Z	49 \| good	7.745 \| good	33.993 \| good	53.321 \| good	0.667 \| good	5.774 \| good	0.165 \| good
2026-04-28T03:00:00.000Z	50 \| good	7.132 \| good	31.963 \| good	53.781 \| good	0.594 \| good	5.564 \| good	0.159 \| good
2026-04-28T04:00:00.000Z	48 \| good	7.212 \| good	31.981 \| good	51.941 \| good	0.577 \| good	5.032 \| good	0.157 \| good
2026-04-28T05:00:00.000Z	45 \| good	7.035 \| good	31.019 \| good	49.102 \| good	0.561 \| good	4.5 \| good	0.155 \| good
2026-04-28T06:00:00.000Z	48 \| good	5.057 \| good	22.029 \| good	51.888 \| good	0.544 \| good	3.968 \| good	0.152 \| good
2026-04-28T07:00:00.000Z	44 \| good	4.148 \| good	18.065 \| good	48.214 \| good	0.506 \| good	3.586 \| good	0.153 \| good
2026-04-28T08:00:00.000Z	36 \| good	4.746 \| good	21.014 \| good	39.066 \| good	0.468 \| good	3.205 \| good	0.153 \| good
2026-04-28T09:00:00.000Z	33 \| good	6.193 \| good	27.049 \| good	30.004 \| good	0.431 \| good	2.823 \| good	0.153 \| good
2026-04-28T10:00:00.000Z	49 \| good	9.493 \| good	42.035 \| good	33.484 \| good	0.441 \| good	2.831 \| good	0.153 \| good
2026-04-28T11:00:00.000Z	49 \| good	9.237 \| good	41.023 \| good	29.555 \| good	0.452 \| good	2.839 \| good	0.152 \| good
2026-04-28T12:00:00.000Z	52 \| moderate	10.279 \| good	45.035 \| good	27.826 \| good	0.463 \| good	2.847 \| good	0.152 \| good
2026-04-28T13:00:00.000Z	49 \| good	9.488 \| good	42.032 \| good	24.639 \| good	0.53 \| good	2.775 \| good	0.153 \| good
2026-04-28T14:00:00.000Z	49 \| good	8.819 \| good	38.975 \| good	25.467 \| good	0.597 \| good	2.703 \| good	0.155 \| good
2026-04-28T15:00:00.000Z	44 \| good	7.661 \| good	33.958 \| good	29.356 \| good	0.664 \| good	2.631 \| good	0.156 \| good
2026-04-28T16:00:00.000Z	38 \| good	6.546 \| good	29.018 \| good	34.191 \| good	0.638 \| good	2.381 \| good	0.155 \| good
2026-04-28T17:00:00.000Z	38 \| good	7.354 \| good	32.035 \| good	38.638 \| good	0.612 \| good	2.131 \| good	0.154 \| good
2026-04-28T18:00:00.000Z	49 \| good	9.3 \| good	41.043 \| good	43.78 \| good	0.586 \| good	1.881 \| good	0.153 \| good
2026-04-28T19:00:00.000Z	44 \| good	7.736 \| good	34.008 \| good	43.726 \| good	0.609 \| good	1.993 \| good	0.153 \| good
2026-04-28T20:00:00.000Z	44 \| good	8.394 \| good	36.997 \| good	46.841 \| good	0.632 \| good	2.106 \| good	0.152 \| good
2026-04-28T21:00:00.000Z	52 \| moderate	9.631 \| good	42.993 \| good	45.419 \| good	0.655 \| good	2.219 \| good	0.152 \| good
2026-04-28T22:00:00.000Z	52 \| moderate	10.012 \| good	44.952 \| good	43.884 \| good	0.705 \| good	4.762 \| good	0.163 \| good
2026-04-28T23:00:00.000Z	49 \| good	9.008 \| good	40.946 \| good	43.358 \| good	0.756 \| good	7.306 \| good	0.175 \| good
2026-04-29T00:00:00.000Z	49 \| good	9.493 \| good	42.04 \| good	33.544 \| good	0.806 \| good	9.85 \| good	0.187 \| good
2026-04-29T01:00:00.000Z	60 \| moderate	13.926 \| fine	62.886 \| fine	24.467 \| good	0.992 \| good	14.004 \| good	0.206 \| good
2026-04-29T02:00:00.000Z	62 \| moderate	14.76 \| fine	65.031 \| fine	24.478 \| good	1.179 \| good	18.158 \| good	0.225 \| good
2026-04-29T03:00:00.000Z	62 \| moderate	14.865 \| fine	66.964 \| fine	25.285 \| good	1.366 \| good	22.311 \| good	0.244 \| good
2026-04-29T04:00:00.000Z	58 \| moderate	13.451 \| fine	60.875 \| fine	26.049 \| good	1.478 \| good	22.48 \| good	0.243 \| good
2026-04-29T05:00:00.000Z	62 \| moderate	15.049 \| fine	66.871 \| fine	19.939 \| good	1.591 \| good	22.648 \| good	0.243 \| good
2026-04-29T06:00:00.000Z	64 \| moderate	16.311 \| fine	72.897 \| fine	19.894 \| good	1.703 \| good	22.816 \| good	0.243 \| good
2026-04-29T07:00:00.000Z	54 \| moderate	10.529 \| good	47.052 \| good	35.161 \| good	1.672 \| good	22.084 \| good	0.234 \| good
2026-04-29T08:00:00.000Z	33 \| good	6.185 \| good	27.067 \| good	34.941 \| good	1.642 \| good	21.352 \| good	0.226 \| good
2026-04-29T09:00:00.000Z	29 \| good	5.476 \| good	23.143 \| good	31.237 \| good	1.612 \| good	20.621 \| good	0.218 \| good
2026-04-29T10:00:00.000Z	38 \| good	7.321 \| good	32.123 \| good	30.208 \| good	1.49 \| good	17.595 \| good	0.208 \| good
2026-04-29T11:00:00.000Z	44 \| good	7.698 \| good	34.062 \| good	27.027 \| good	1.368 \| good	14.569 \| good	0.197 \| good
2026-04-29T12:00:00.000Z	27 \| good	5.457 \| good	23.024 \| good	28.089 \| good	1.247 \| good	11.544 \| good	0.187 \| good
2026-04-29T13:00:00.000Z	27 \| good	4.708 \| good	20.969 \| good	27.452 \| good	1.296 \| good	9.453 \| good	0.182 \| good
2026-04-29T14:00:00.000Z	26 \| good	3.363 \| good	14.977 \| good	28.456 \| good	1.346 \| good	7.363 \| good	0.177 \| good
2026-04-29T15:00:00.000Z	31 \| good	2.158 \| good	9 \| good	32.617 \| good	1.396 \| good	5.272 \| good	0.172 \| good
2026-04-29T16:00:00.000Z	31 \| good	2.104 \| good	8.995 \| good	33.893 \| good	1.265 \| good	4.687 \| good	0.166 \| good
2026-04-29T17:00:00.000Z	31 \| good	3.11 \| good	13.947 \| good	34.478 \| good	1.134 \| good	4.102 \| good	0.16 \| good
2026-04-29T18:00:00.000Z	33 \| good	4.236 \| good	18.932 \| good	35.901 \| good	1.004 \| good	3.517 \| good	0.153 \| good
2026-04-29T19:00:00.000Z	32 \| good	3.126 \| good	13.932 \| good	35.151 \| good	0.948 \| good	3.641 \| good	0.152 \| good
2026-04-29T20:00:00.000Z	31 \| good	2.801 \| good	11.958 \| good	33.219 \| good	0.893 \| good	3.765 \| good	0.15 \| good
2026-04-29T21:00:00.000Z	32 \| good	3.784 \| good	16.062 \| good	34.658 \| good	0.838 \| good	3.889 \| good	0.148 \| good

Live air quality index in Westchester, Illinois today

Major air pollutants in Westchester, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)