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

Currently, Westchester, Illinois has a sulfur dioxide (SO2) concentration of 0.412 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 41.551 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 3.697 ppb.

Live air quality index in Westchester, Illinois today

Name: Live air pollution levels in Westchester, Illinois today
Creator: Ambee

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)

18.05 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

80.02 μg/m³

155

255

425

605+

Ozone (O₃)

37.98 ppb

201

201+

Sulfur Dioxide (SO₂)

0.33 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.83 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.22 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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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
2025-07-22T01:00:00.000Z	82 \| moderate	25.584 \| fine	110.788 \| fine	48.921 \| good	2.295 \| good	2.822 \| good	0.293 \| good
2025-07-22T02:00:00.000Z	84 \| moderate	26.727 \| fine	115.938 \| fine	44.55 \| good	1.856 \| good	6.865 \| good	0.274 \| good
2025-07-22T03:00:00.000Z	56 \| moderate	11.86 \| good	52.613 \| good	25.034 \| good	1.484 \| good	9.714 \| good	0.291 \| good
2025-07-22T04:00:00.000Z	92 \| moderate	31.46 \| fine	136.415 \| fine	39.75 \| good	0.39 \| good	7.742 \| good	0.214 \| good
2025-07-22T05:00:00.000Z	96 \| moderate	33.407 \| fine	144.569 \| fine	32.784 \| good	0.48 \| good	8.879 \| good	0.175 \| good
2025-07-22T06:00:00.000Z	96 \| moderate	33.407 \| fine	144.569 \| fine	30.482 \| good	1.023 \| good	10.824 \| good	0.176 \| good
2025-07-22T07:00:00.000Z	97 \| moderate	33.853 \| fine	146.698 \| fine	29.74 \| good	0.806 \| good	10.398 \| good	0.143 \| good
2025-07-22T08:00:00.000Z	99 \| moderate	34.977 \| fine	152.402 \| fine	22.144 \| good	0.47 \| good	13.485 \| good	0.143 \| good
2025-07-22T09:00:00.000Z	103 \| sensitive	36.332 \| moderate	158.535 \| moderate	22.865 \| good	0.287 \| good	11.901 \| good	0.128 \| good
2025-07-22T10:00:00.000Z	102 \| sensitive	35.996 \| moderate	157.238 \| moderate	22.146 \| good	0.329 \| good	10.575 \| good	0.143 \| good
2025-07-22T11:00:00.000Z	100 \| moderate	35.24 \| fine	153.728 \| fine	19.714 \| good	0.529 \| good	9.174 \| good	0.194 \| good
2025-07-22T12:00:00.000Z	100 \| moderate	35.24 \| fine	153.728 \| fine	18.141 \| good	0.517 \| good	8.294 \| good	0.222 \| good
2025-07-22T13:00:00.000Z	97 \| moderate	34.087 \| fine	147.73 \| fine	20.153 \| good	0.287 \| good	7.179 \| good	0.194 \| good
2025-07-22T14:00:00.000Z	97 \| moderate	34.087 \| fine	147.73 \| fine	24.586 \| good	0.579 \| good	4.207 \| good	0.209 \| good
2025-07-22T15:00:00.000Z	97 \| moderate	33.674 \| fine	145.393 \| fine	24.651 \| good	0.57 \| good	4.999 \| good	0.242 \| good
2025-07-22T16:00:00.000Z	96 \| moderate	33.352 \| fine	144.543 \| fine	32.511 \| good	1.224 \| good	3.738 \| good	0.226 \| good
2025-07-22T17:00:00.000Z	96 \| moderate	33.352 \| fine	144.543 \| fine	39.431 \| good	0.982 \| good	2.32 \| good	0.226 \| good
2025-07-22T18:00:00.000Z	94 \| moderate	31.707 \| fine	137.897 \| fine	45.317 \| good	0.983 \| good	2.209 \| good	0.226 \| good
2025-07-22T19:00:00.000Z	92 \| moderate	31.067 \| fine	134.403 \| fine	49.848 \| good	0.797 \| good	2.094 \| good	0.245 \| good
2025-07-22T20:00:00.000Z	88 \| moderate	28.54 \| fine	123.825 \| fine	52.528 \| good	0.658 \| good	1.816 \| good	0.273 \| good
2025-07-22T21:00:00.000Z	88 \| moderate	28.54 \| fine	123.825 \| fine	54.861 \| good	0.569 \| good	2.079 \| good	0.371 \| good
2025-07-22T22:00:00.000Z	77 \| moderate	23.261 \| fine	102.214 \| fine	58.274 \| fine	0.698 \| good	2.218 \| good	0.471 \| good
2025-07-22T23:00:00.000Z	75 \| moderate	22.285 \| fine	98.047 \| fine	58.563 \| fine	0.672 \| good	1.868 \| good	0.535 \| good
2025-07-23T00:00:00.000Z	75 \| moderate	21.817 \| fine	95.13 \| fine	57.879 \| fine	0.912 \| good	1.85 \| good	0.505 \| good
2025-07-23T01:00:00.000Z	75 \| moderate	21.817 \| fine	95.13 \| fine	53.018 \| good	0.679 \| good	2.596 \| good	0.49 \| good
2025-07-23T02:00:00.000Z	75 \| moderate	21.963 \| fine	96.181 \| fine	50.52 \| good	0.572 \| good	3.949 \| good	0.509 \| good
2025-07-23T03:00:00.000Z	75 \| moderate	21.809 \| fine	95.946 \| fine	44.899 \| good	0.43 \| good	5.242 \| good	0.525 \| good
2025-07-23T04:00:00.000Z	73 \| moderate	20.656 \| fine	90.623 \| fine	44.043 \| good	0.446 \| good	5.213 \| good	0.446 \| good
2025-07-23T05:00:00.000Z	73 \| moderate	20.656 \| fine	90.623 \| fine	40.616 \| good	0.437 \| good	4.356 \| good	0.446 \| good
2025-07-23T06:00:00.000Z	69 \| moderate	19.476 \| fine	85.572 \| fine	40.293 \| good	0.971 \| good	6.741 \| good	0.45 \| good
2025-07-23T07:00:00.000Z	66 \| moderate	17.205 \| fine	76.514 \| fine	39.221 \| good	3.73 \| good	5.362 \| good	0.417 \| good
2025-07-23T08:00:00.000Z	66 \| moderate	17.129 \| fine	76.218 \| fine	38.512 \| good	5.133 \| good	5.401 \| good	0.369 \| good
2025-07-23T09:00:00.000Z	64 \| moderate	16.239 \| fine	72.249 \| fine	38.559 \| good	2.895 \| good	4.9 \| good	0.369 \| good
2025-07-23T10:00:00.000Z	64 \| moderate	15.759 \| fine	70.332 \| fine	39.345 \| good	3.303 \| good	8.44 \| good	0.369 \| good
2025-07-23T11:00:00.000Z	64 \| moderate	15.998 \| fine	71.129 \| fine	37.417 \| good	1.905 \| good	6.803 \| good	0.383 \| good
2025-07-23T12:00:00.000Z	67 \| moderate	17.782 \| fine	79.269 \| fine	36.575 \| good	1.567 \| good	8.417 \| good	0.269 \| good
2025-07-23T13:00:00.000Z	67 \| moderate	17.782 \| fine	79.269 \| fine	33.428 \| good	2.539 \| good	10.516 \| good	0.285 \| good
2025-07-23T14:00:00.000Z	69 \| moderate	19.059 \| fine	84.426 \| fine	36.526 \| good	0.653 \| good	10.352 \| good	0.285 \| good
2025-07-23T15:00:00.000Z	69 \| moderate	19.104 \| fine	84.623 \| fine	35.335 \| good	0.601 \| good	9.428 \| good	0.285 \| good
2025-07-23T16:00:00.000Z	69 \| moderate	19.495 \| fine	85.81 \| fine	38.785 \| good	1.024 \| good	8.098 \| good	0.265 \| good
2025-07-23T17:00:00.000Z	69 \| moderate	19.307 \| fine	84.998 \| fine	45.339 \| good	0.7 \| good	7.791 \| good	0.249 \| good
2025-07-23T18:00:00.000Z	69 \| moderate	19.095 \| fine	84.936 \| fine	43.84 \| good	0.487 \| good	4.892 \| good	0.242 \| good
2025-07-23T19:00:00.000Z	69 \| moderate	18.968 \| fine	84.006 \| fine	49.067 \| good	0.397 \| good	3.411 \| good	0.227 \| good
2025-07-23T20:00:00.000Z	69 \| moderate	18.968 \| fine	84.077 \| fine	50.425 \| good	0.37 \| good	3.985 \| good	0.227 \| good
2025-07-23T21:00:00.000Z	69 \| moderate	18.942 \| fine	84.046 \| fine	44.14 \| good	0.409 \| good	3.812 \| good	0.227 \| good
2025-07-23T22:00:00.000Z	69 \| moderate	18.764 \| fine	83.264 \| fine	45.913 \| good	0.399 \| good	4.469 \| good	0.227 \| good
2025-07-23T23:00:00.000Z	67 \| moderate	18.471 \| fine	81.347 \| fine	43.857 \| good	0.335 \| good	3.881 \| good	0.194 \| good
2025-07-24T00:00:00.000Z	67 \| moderate	17.78 \| fine	78.596 \| fine	42.008 \| good	0.312 \| good	3.758 \| good	0.225 \| good
2025-07-24T00:00:00.000Z	67 \| moderate	18.054 \| fine	80.022 \| fine	37.983 \| good	0.326 \| good	3.831 \| good	0.222 \| good
2025-07-23T23:00:00.000Z	62 \| moderate	14.959 \| fine	66.773 \| fine	54.839 \| good	1.94 \| good	3.53 \| good	0.19 \| good
2025-07-24T00:00:00.000Z	58 \| moderate	13.044 \| fine	58.554 \| fine	50.437 \| good	1.73 \| good	4.412 \| good	0.193 \| good
2025-07-24T01:00:00.000Z	64 \| moderate	15.931 \| fine	71.052 \| fine	39.59 \| good	1.701 \| good	5.656 \| good	0.199 \| good
2025-07-24T02:00:00.000Z	66 \| moderate	17.324 \| fine	76.539 \| fine	32.655 \| good	1.672 \| good	6.899 \| good	0.206 \| good
2025-07-24T03:00:00.000Z	69 \| moderate	18.732 \| fine	83.155 \| fine	31.569 \| good	1.643 \| good	8.143 \| good	0.213 \| good
2025-07-24T04:00:00.000Z	71 \| moderate	20.327 \| fine	88.826 \| fine	30.671 \| good	1.621 \| good	7.535 \| good	0.211 \| good
2025-07-24T05:00:00.000Z	69 \| moderate	19.366 \| fine	85.252 \| fine	27.887 \| good	1.598 \| good	6.927 \| good	0.209 \| good
2025-07-24T06:00:00.000Z	69 \| moderate	18.829 \| fine	83.097 \| fine	26.283 \| good	1.576 \| good	6.32 \| good	0.208 \| good
2025-07-24T07:00:00.000Z	69 \| moderate	18.781 \| fine	82.539 \| fine	24.61 \| good	1.789 \| good	6.001 \| good	0.206 \| good
2025-07-24T08:00:00.000Z	69 \| moderate	18.513 \| fine	81.685 \| fine	21.808 \| good	2.001 \| good	5.683 \| good	0.205 \| good
2025-07-24T09:00:00.000Z	69 \| moderate	19.156 \| fine	84.8 \| fine	22.397 \| good	2.214 \| good	5.364 \| good	0.204 \| good
2025-07-24T10:00:00.000Z	64 \| moderate	15.991 \| fine	71 \| fine	18.878 \| good	2.677 \| good	5.382 \| good	0.204 \| good
2025-07-24T11:00:00.000Z	69 \| moderate	19.485 \| fine	85.971 \| fine	19.904 \| good	3.14 \| good	5.399 \| good	0.205 \| good
2025-07-24T12:00:00.000Z	67 \| moderate	18.209 \| fine	80.406 \| fine	26.49 \| good	3.602 \| good	5.417 \| good	0.206 \| good
2025-07-24T13:00:00.000Z	69 \| moderate	18.917 \| fine	83.924 \| fine	33.357 \| good	3.427 \| good	4.926 \| good	0.209 \| good
2025-07-24T14:00:00.000Z	71 \| moderate	19.655 \| fine	86.794 \| fine	41.428 \| good	3.251 \| good	4.436 \| good	0.212 \| good
2025-07-24T15:00:00.000Z	71 \| moderate	19.65 \| fine	86.587 \| fine	45.259 \| good	3.075 \| good	3.945 \| good	0.215 \| good
2025-07-24T16:00:00.000Z	71 \| moderate	19.754 \| fine	86.661 \| fine	47.176 \| good	2.538 \| good	3.393 \| good	0.206 \| good
2025-07-24T17:00:00.000Z	69 \| moderate	18.862 \| fine	83.521 \| fine	47.07 \| good	2 \| good	2.842 \| good	0.197 \| good
2025-07-24T18:00:00.000Z	64 \| moderate	16.078 \| fine	71.56 \| fine	46.335 \| good	1.463 \| good	2.29 \| good	0.188 \| good
2025-07-24T19:00:00.000Z	60 \| moderate	14.26 \| fine	63.993 \| fine	46.717 \| good	1.335 \| good	2.151 \| good	0.184 \| good
2025-07-24T20:00:00.000Z	58 \| moderate	12.816 \| fine	57.85 \| fine	45.414 \| good	1.206 \| good	2.011 \| good	0.18 \| good
2025-07-24T21:00:00.000Z	54 \| moderate	10.768 \| good	47.5 \| good	40.644 \| good	1.078 \| good	1.872 \| good	0.175 \| good
2025-07-24T22:00:00.000Z	54 \| moderate	10.746 \| good	47.457 \| good	41.216 \| good	1.166 \| good	3.004 \| good	0.182 \| good
2025-07-24T23:00:00.000Z	52 \| moderate	9.663 \| good	43.053 \| good	43.586 \| good	1.253 \| good	4.136 \| good	0.188 \| good
2025-07-25T00:00:00.000Z	49 \| good	9.261 \| good	41.274 \| good	39.464 \| good	1.341 \| good	5.269 \| good	0.195 \| good
2025-07-25T01:00:00.000Z	54 \| moderate	11.077 \| good	48.795 \| good	36.696 \| good	1.428 \| good	8.071 \| good	0.214 \| good
2025-07-25T02:00:00.000Z	56 \| moderate	11.905 \| good	53.218 \| good	32.138 \| good	1.515 \| good	10.874 \| good	0.233 \| good
2025-07-25T03:00:00.000Z	60 \| moderate	14.095 \| fine	63.04 \| fine	27.527 \| good	1.602 \| good	13.677 \| good	0.253 \| good
2025-07-25T04:00:00.000Z	62 \| moderate	14.866 \| fine	66.678 \| fine	23.72 \| good	1.498 \| good	13.133 \| good	0.247 \| good
2025-07-25T05:00:00.000Z	62 \| moderate	14.611 \| fine	65.34 \| fine	16.818 \| good	1.395 \| good	12.589 \| good	0.241 \| good
2025-07-25T06:00:00.000Z	60 \| moderate	13.797 \| fine	62.05 \| fine	16.74 \| good	1.291 \| good	12.045 \| good	0.235 \| good
2025-07-25T07:00:00.000Z	58 \| moderate	13.057 \| fine	58.497 \| fine	13.516 \| good	1.233 \| good	11.091 \| good	0.224 \| good
2025-07-25T08:00:00.000Z	58 \| moderate	12.659 \| fine	56.572 \| fine	18.034 \| good	1.175 \| good	10.136 \| good	0.213 \| good
2025-07-25T09:00:00.000Z	58 \| moderate	12.755 \| fine	57.177 \| fine	20.506 \| good	1.117 \| good	9.181 \| good	0.202 \| good
2025-07-25T10:00:00.000Z	52 \| moderate	10.372 \| good	45.929 \| good	15.665 \| good	1.136 \| good	8.737 \| good	0.196 \| good
2025-07-25T11:00:00.000Z	54 \| moderate	10.716 \| good	47.577 \| good	17.22 \| good	1.155 \| good	8.293 \| good	0.19 \| good
2025-07-25T12:00:00.000Z	54 \| moderate	10.685 \| good	47.449 \| good	18.848 \| good	1.174 \| good	7.849 \| good	0.184 \| good
2025-07-25T13:00:00.000Z	52 \| moderate	10.03 \| good	44.466 \| good	24.778 \| good	1.578 \| good	8.508 \| good	0.193 \| good
2025-07-25T14:00:00.000Z	56 \| moderate	11.569 \| good	51.044 \| good	33.995 \| good	1.982 \| good	9.167 \| good	0.201 \| good
2025-07-25T15:00:00.000Z	56 \| moderate	12.292 \| fine	55.097 \| fine	44.38 \| good	2.386 \| good	9.826 \| good	0.209 \| good
2025-07-25T16:00:00.000Z	54 \| moderate	11.296 \| good	49.913 \| good	49.846 \| good	2.492 \| good	9.162 \| good	0.208 \| good
2025-07-25T17:00:00.000Z	54 \| moderate	10.949 \| good	48.582 \| good	53.184 \| good	2.598 \| good	8.498 \| good	0.207 \| good
2025-07-25T18:00:00.000Z	52 \| moderate	9.676 \| good	42.967 \| good	53.413 \| good	2.704 \| good	7.834 \| good	0.205 \| good
2025-07-25T19:00:00.000Z	54 \| moderate	10.527 \| good	46.629 \| good	51.424 \| good	2.496 \| good	6.909 \| good	0.2 \| good
2025-07-25T20:00:00.000Z	60 \| moderate	14.446 \| fine	64.688 \| fine	50.462 \| good	2.289 \| good	5.983 \| good	0.195 \| good
2025-07-25T21:00:00.000Z	64 \| moderate	15.916 \| fine	71.122 \| fine	52.972 \| good	2.082 \| good	5.057 \| good	0.19 \| good
2025-07-25T22:00:00.000Z	62 \| moderate	15.313 \| fine	68.764 \| fine	56.393 \| fine	2.002 \| good	6.727 \| good	0.196 \| good

Westchester

Get reliable air quality data to drive your business

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

0.23ppm

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 10:00:00 on 2025-07-22.

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 11:00:00 on 2025-07-23.

What is the AQI in Westchester, Illinois right now?

As of now, the AQI in Westchester, Illinois is 69, 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 19.428 μg/m³.

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

The PM₁₀ concentration in Westchester, Illinois is 85.814 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 0.226 ppm.

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

Currently, Westchester, Illinois has a sulfur dioxide (SO₂) concentration of 0.412 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 41.551 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 3.697 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-22T01:00:00.000Z	82 \| moderate	25.584 \| fine	110.788 \| fine	48.921 \| good	2.295 \| good	2.822 \| good	0.293 \| good
2025-07-22T02:00:00.000Z	84 \| moderate	26.727 \| fine	115.938 \| fine	44.55 \| good	1.856 \| good	6.865 \| good	0.274 \| good
2025-07-22T03:00:00.000Z	56 \| moderate	11.86 \| good	52.613 \| good	25.034 \| good	1.484 \| good	9.714 \| good	0.291 \| good
2025-07-22T04:00:00.000Z	92 \| moderate	31.46 \| fine	136.415 \| fine	39.75 \| good	0.39 \| good	7.742 \| good	0.214 \| good
2025-07-22T05:00:00.000Z	96 \| moderate	33.407 \| fine	144.569 \| fine	32.784 \| good	0.48 \| good	8.879 \| good	0.175 \| good
2025-07-22T06:00:00.000Z	96 \| moderate	33.407 \| fine	144.569 \| fine	30.482 \| good	1.023 \| good	10.824 \| good	0.176 \| good
2025-07-22T07:00:00.000Z	97 \| moderate	33.853 \| fine	146.698 \| fine	29.74 \| good	0.806 \| good	10.398 \| good	0.143 \| good
2025-07-22T08:00:00.000Z	99 \| moderate	34.977 \| fine	152.402 \| fine	22.144 \| good	0.47 \| good	13.485 \| good	0.143 \| good
2025-07-22T09:00:00.000Z	103 \| sensitive	36.332 \| moderate	158.535 \| moderate	22.865 \| good	0.287 \| good	11.901 \| good	0.128 \| good
2025-07-22T10:00:00.000Z	102 \| sensitive	35.996 \| moderate	157.238 \| moderate	22.146 \| good	0.329 \| good	10.575 \| good	0.143 \| good
2025-07-22T11:00:00.000Z	100 \| moderate	35.24 \| fine	153.728 \| fine	19.714 \| good	0.529 \| good	9.174 \| good	0.194 \| good
2025-07-22T12:00:00.000Z	100 \| moderate	35.24 \| fine	153.728 \| fine	18.141 \| good	0.517 \| good	8.294 \| good	0.222 \| good
2025-07-22T13:00:00.000Z	97 \| moderate	34.087 \| fine	147.73 \| fine	20.153 \| good	0.287 \| good	7.179 \| good	0.194 \| good
2025-07-22T14:00:00.000Z	97 \| moderate	34.087 \| fine	147.73 \| fine	24.586 \| good	0.579 \| good	4.207 \| good	0.209 \| good
2025-07-22T15:00:00.000Z	97 \| moderate	33.674 \| fine	145.393 \| fine	24.651 \| good	0.57 \| good	4.999 \| good	0.242 \| good
2025-07-22T16:00:00.000Z	96 \| moderate	33.352 \| fine	144.543 \| fine	32.511 \| good	1.224 \| good	3.738 \| good	0.226 \| good
2025-07-22T17:00:00.000Z	96 \| moderate	33.352 \| fine	144.543 \| fine	39.431 \| good	0.982 \| good	2.32 \| good	0.226 \| good
2025-07-22T18:00:00.000Z	94 \| moderate	31.707 \| fine	137.897 \| fine	45.317 \| good	0.983 \| good	2.209 \| good	0.226 \| good
2025-07-22T19:00:00.000Z	92 \| moderate	31.067 \| fine	134.403 \| fine	49.848 \| good	0.797 \| good	2.094 \| good	0.245 \| good
2025-07-22T20:00:00.000Z	88 \| moderate	28.54 \| fine	123.825 \| fine	52.528 \| good	0.658 \| good	1.816 \| good	0.273 \| good
2025-07-22T21:00:00.000Z	88 \| moderate	28.54 \| fine	123.825 \| fine	54.861 \| good	0.569 \| good	2.079 \| good	0.371 \| good
2025-07-22T22:00:00.000Z	77 \| moderate	23.261 \| fine	102.214 \| fine	58.274 \| fine	0.698 \| good	2.218 \| good	0.471 \| good
2025-07-22T23:00:00.000Z	75 \| moderate	22.285 \| fine	98.047 \| fine	58.563 \| fine	0.672 \| good	1.868 \| good	0.535 \| good
2025-07-23T00:00:00.000Z	75 \| moderate	21.817 \| fine	95.13 \| fine	57.879 \| fine	0.912 \| good	1.85 \| good	0.505 \| good
2025-07-23T01:00:00.000Z	75 \| moderate	21.817 \| fine	95.13 \| fine	53.018 \| good	0.679 \| good	2.596 \| good	0.49 \| good
2025-07-23T02:00:00.000Z	75 \| moderate	21.963 \| fine	96.181 \| fine	50.52 \| good	0.572 \| good	3.949 \| good	0.509 \| good
2025-07-23T03:00:00.000Z	75 \| moderate	21.809 \| fine	95.946 \| fine	44.899 \| good	0.43 \| good	5.242 \| good	0.525 \| good
2025-07-23T04:00:00.000Z	73 \| moderate	20.656 \| fine	90.623 \| fine	44.043 \| good	0.446 \| good	5.213 \| good	0.446 \| good
2025-07-23T05:00:00.000Z	73 \| moderate	20.656 \| fine	90.623 \| fine	40.616 \| good	0.437 \| good	4.356 \| good	0.446 \| good
2025-07-23T06:00:00.000Z	69 \| moderate	19.476 \| fine	85.572 \| fine	40.293 \| good	0.971 \| good	6.741 \| good	0.45 \| good
2025-07-23T07:00:00.000Z	66 \| moderate	17.205 \| fine	76.514 \| fine	39.221 \| good	3.73 \| good	5.362 \| good	0.417 \| good
2025-07-23T08:00:00.000Z	66 \| moderate	17.129 \| fine	76.218 \| fine	38.512 \| good	5.133 \| good	5.401 \| good	0.369 \| good
2025-07-23T09:00:00.000Z	64 \| moderate	16.239 \| fine	72.249 \| fine	38.559 \| good	2.895 \| good	4.9 \| good	0.369 \| good
2025-07-23T10:00:00.000Z	64 \| moderate	15.759 \| fine	70.332 \| fine	39.345 \| good	3.303 \| good	8.44 \| good	0.369 \| good
2025-07-23T11:00:00.000Z	64 \| moderate	15.998 \| fine	71.129 \| fine	37.417 \| good	1.905 \| good	6.803 \| good	0.383 \| good
2025-07-23T12:00:00.000Z	67 \| moderate	17.782 \| fine	79.269 \| fine	36.575 \| good	1.567 \| good	8.417 \| good	0.269 \| good
2025-07-23T13:00:00.000Z	67 \| moderate	17.782 \| fine	79.269 \| fine	33.428 \| good	2.539 \| good	10.516 \| good	0.285 \| good
2025-07-23T14:00:00.000Z	69 \| moderate	19.059 \| fine	84.426 \| fine	36.526 \| good	0.653 \| good	10.352 \| good	0.285 \| good
2025-07-23T15:00:00.000Z	69 \| moderate	19.104 \| fine	84.623 \| fine	35.335 \| good	0.601 \| good	9.428 \| good	0.285 \| good
2025-07-23T16:00:00.000Z	69 \| moderate	19.495 \| fine	85.81 \| fine	38.785 \| good	1.024 \| good	8.098 \| good	0.265 \| good
2025-07-23T17:00:00.000Z	69 \| moderate	19.307 \| fine	84.998 \| fine	45.339 \| good	0.7 \| good	7.791 \| good	0.249 \| good
2025-07-23T18:00:00.000Z	69 \| moderate	19.095 \| fine	84.936 \| fine	43.84 \| good	0.487 \| good	4.892 \| good	0.242 \| good
2025-07-23T19:00:00.000Z	69 \| moderate	18.968 \| fine	84.006 \| fine	49.067 \| good	0.397 \| good	3.411 \| good	0.227 \| good
2025-07-23T20:00:00.000Z	69 \| moderate	18.968 \| fine	84.077 \| fine	50.425 \| good	0.37 \| good	3.985 \| good	0.227 \| good
2025-07-23T21:00:00.000Z	69 \| moderate	18.942 \| fine	84.046 \| fine	44.14 \| good	0.409 \| good	3.812 \| good	0.227 \| good
2025-07-23T22:00:00.000Z	69 \| moderate	18.764 \| fine	83.264 \| fine	45.913 \| good	0.399 \| good	4.469 \| good	0.227 \| good
2025-07-23T23:00:00.000Z	67 \| moderate	18.471 \| fine	81.347 \| fine	43.857 \| good	0.335 \| good	3.881 \| good	0.194 \| good
2025-07-24T00:00:00.000Z	67 \| moderate	17.78 \| fine	78.596 \| fine	42.008 \| good	0.312 \| good	3.758 \| good	0.225 \| good
2025-07-24T00:00:00.000Z	67 \| moderate	18.054 \| fine	80.022 \| fine	37.983 \| good	0.326 \| good	3.831 \| good	0.222 \| good
2025-07-23T23:00:00.000Z	62 \| moderate	14.959 \| fine	66.773 \| fine	54.839 \| good	1.94 \| good	3.53 \| good	0.19 \| good
2025-07-24T00:00:00.000Z	58 \| moderate	13.044 \| fine	58.554 \| fine	50.437 \| good	1.73 \| good	4.412 \| good	0.193 \| good
2025-07-24T01:00:00.000Z	64 \| moderate	15.931 \| fine	71.052 \| fine	39.59 \| good	1.701 \| good	5.656 \| good	0.199 \| good
2025-07-24T02:00:00.000Z	66 \| moderate	17.324 \| fine	76.539 \| fine	32.655 \| good	1.672 \| good	6.899 \| good	0.206 \| good
2025-07-24T03:00:00.000Z	69 \| moderate	18.732 \| fine	83.155 \| fine	31.569 \| good	1.643 \| good	8.143 \| good	0.213 \| good
2025-07-24T04:00:00.000Z	71 \| moderate	20.327 \| fine	88.826 \| fine	30.671 \| good	1.621 \| good	7.535 \| good	0.211 \| good
2025-07-24T05:00:00.000Z	69 \| moderate	19.366 \| fine	85.252 \| fine	27.887 \| good	1.598 \| good	6.927 \| good	0.209 \| good
2025-07-24T06:00:00.000Z	69 \| moderate	18.829 \| fine	83.097 \| fine	26.283 \| good	1.576 \| good	6.32 \| good	0.208 \| good
2025-07-24T07:00:00.000Z	69 \| moderate	18.781 \| fine	82.539 \| fine	24.61 \| good	1.789 \| good	6.001 \| good	0.206 \| good
2025-07-24T08:00:00.000Z	69 \| moderate	18.513 \| fine	81.685 \| fine	21.808 \| good	2.001 \| good	5.683 \| good	0.205 \| good
2025-07-24T09:00:00.000Z	69 \| moderate	19.156 \| fine	84.8 \| fine	22.397 \| good	2.214 \| good	5.364 \| good	0.204 \| good
2025-07-24T10:00:00.000Z	64 \| moderate	15.991 \| fine	71 \| fine	18.878 \| good	2.677 \| good	5.382 \| good	0.204 \| good
2025-07-24T11:00:00.000Z	69 \| moderate	19.485 \| fine	85.971 \| fine	19.904 \| good	3.14 \| good	5.399 \| good	0.205 \| good
2025-07-24T12:00:00.000Z	67 \| moderate	18.209 \| fine	80.406 \| fine	26.49 \| good	3.602 \| good	5.417 \| good	0.206 \| good
2025-07-24T13:00:00.000Z	69 \| moderate	18.917 \| fine	83.924 \| fine	33.357 \| good	3.427 \| good	4.926 \| good	0.209 \| good
2025-07-24T14:00:00.000Z	71 \| moderate	19.655 \| fine	86.794 \| fine	41.428 \| good	3.251 \| good	4.436 \| good	0.212 \| good
2025-07-24T15:00:00.000Z	71 \| moderate	19.65 \| fine	86.587 \| fine	45.259 \| good	3.075 \| good	3.945 \| good	0.215 \| good
2025-07-24T16:00:00.000Z	71 \| moderate	19.754 \| fine	86.661 \| fine	47.176 \| good	2.538 \| good	3.393 \| good	0.206 \| good
2025-07-24T17:00:00.000Z	69 \| moderate	18.862 \| fine	83.521 \| fine	47.07 \| good	2 \| good	2.842 \| good	0.197 \| good
2025-07-24T18:00:00.000Z	64 \| moderate	16.078 \| fine	71.56 \| fine	46.335 \| good	1.463 \| good	2.29 \| good	0.188 \| good
2025-07-24T19:00:00.000Z	60 \| moderate	14.26 \| fine	63.993 \| fine	46.717 \| good	1.335 \| good	2.151 \| good	0.184 \| good
2025-07-24T20:00:00.000Z	58 \| moderate	12.816 \| fine	57.85 \| fine	45.414 \| good	1.206 \| good	2.011 \| good	0.18 \| good
2025-07-24T21:00:00.000Z	54 \| moderate	10.768 \| good	47.5 \| good	40.644 \| good	1.078 \| good	1.872 \| good	0.175 \| good
2025-07-24T22:00:00.000Z	54 \| moderate	10.746 \| good	47.457 \| good	41.216 \| good	1.166 \| good	3.004 \| good	0.182 \| good
2025-07-24T23:00:00.000Z	52 \| moderate	9.663 \| good	43.053 \| good	43.586 \| good	1.253 \| good	4.136 \| good	0.188 \| good
2025-07-25T00:00:00.000Z	49 \| good	9.261 \| good	41.274 \| good	39.464 \| good	1.341 \| good	5.269 \| good	0.195 \| good
2025-07-25T01:00:00.000Z	54 \| moderate	11.077 \| good	48.795 \| good	36.696 \| good	1.428 \| good	8.071 \| good	0.214 \| good
2025-07-25T02:00:00.000Z	56 \| moderate	11.905 \| good	53.218 \| good	32.138 \| good	1.515 \| good	10.874 \| good	0.233 \| good
2025-07-25T03:00:00.000Z	60 \| moderate	14.095 \| fine	63.04 \| fine	27.527 \| good	1.602 \| good	13.677 \| good	0.253 \| good
2025-07-25T04:00:00.000Z	62 \| moderate	14.866 \| fine	66.678 \| fine	23.72 \| good	1.498 \| good	13.133 \| good	0.247 \| good
2025-07-25T05:00:00.000Z	62 \| moderate	14.611 \| fine	65.34 \| fine	16.818 \| good	1.395 \| good	12.589 \| good	0.241 \| good
2025-07-25T06:00:00.000Z	60 \| moderate	13.797 \| fine	62.05 \| fine	16.74 \| good	1.291 \| good	12.045 \| good	0.235 \| good
2025-07-25T07:00:00.000Z	58 \| moderate	13.057 \| fine	58.497 \| fine	13.516 \| good	1.233 \| good	11.091 \| good	0.224 \| good
2025-07-25T08:00:00.000Z	58 \| moderate	12.659 \| fine	56.572 \| fine	18.034 \| good	1.175 \| good	10.136 \| good	0.213 \| good
2025-07-25T09:00:00.000Z	58 \| moderate	12.755 \| fine	57.177 \| fine	20.506 \| good	1.117 \| good	9.181 \| good	0.202 \| good
2025-07-25T10:00:00.000Z	52 \| moderate	10.372 \| good	45.929 \| good	15.665 \| good	1.136 \| good	8.737 \| good	0.196 \| good
2025-07-25T11:00:00.000Z	54 \| moderate	10.716 \| good	47.577 \| good	17.22 \| good	1.155 \| good	8.293 \| good	0.19 \| good
2025-07-25T12:00:00.000Z	54 \| moderate	10.685 \| good	47.449 \| good	18.848 \| good	1.174 \| good	7.849 \| good	0.184 \| good
2025-07-25T13:00:00.000Z	52 \| moderate	10.03 \| good	44.466 \| good	24.778 \| good	1.578 \| good	8.508 \| good	0.193 \| good
2025-07-25T14:00:00.000Z	56 \| moderate	11.569 \| good	51.044 \| good	33.995 \| good	1.982 \| good	9.167 \| good	0.201 \| good
2025-07-25T15:00:00.000Z	56 \| moderate	12.292 \| fine	55.097 \| fine	44.38 \| good	2.386 \| good	9.826 \| good	0.209 \| good
2025-07-25T16:00:00.000Z	54 \| moderate	11.296 \| good	49.913 \| good	49.846 \| good	2.492 \| good	9.162 \| good	0.208 \| good
2025-07-25T17:00:00.000Z	54 \| moderate	10.949 \| good	48.582 \| good	53.184 \| good	2.598 \| good	8.498 \| good	0.207 \| good
2025-07-25T18:00:00.000Z	52 \| moderate	9.676 \| good	42.967 \| good	53.413 \| good	2.704 \| good	7.834 \| good	0.205 \| good
2025-07-25T19:00:00.000Z	54 \| moderate	10.527 \| good	46.629 \| good	51.424 \| good	2.496 \| good	6.909 \| good	0.2 \| good
2025-07-25T20:00:00.000Z	60 \| moderate	14.446 \| fine	64.688 \| fine	50.462 \| good	2.289 \| good	5.983 \| good	0.195 \| good
2025-07-25T21:00:00.000Z	64 \| moderate	15.916 \| fine	71.122 \| fine	52.972 \| good	2.082 \| good	5.057 \| good	0.19 \| good
2025-07-25T22:00:00.000Z	62 \| moderate	15.313 \| fine	68.764 \| fine	56.393 \| fine	2.002 \| good	6.727 \| good	0.196 \| 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)