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

Currently, Westchester, Illinois has a sulfur dioxide (SO2) concentration of 1.612 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 24.929 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 1.802 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 14.617 μg/m3.

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

The PM10 concentration in Westchester, Illinois is 65.902 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)

14.62 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

65.90 μg/m³

155

255

425

605+

Ozone (O₃)

24.93 ppb

201

201+

Sulfur Dioxide (SO₂)

1.61 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

1.80 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 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
2026-08-22T02:00:00.000Z	58 \| moderate	12.898 \| fine	49.626 \| good	33.068 \| good	1.138 \| good	5.891 \| good	0.29 \| good
2026-08-22T03:00:00.000Z	60 \| moderate	13.799 \| fine	51.075 \| good	24.821 \| good	0.948 \| good	7.344 \| good	0.257 \| good
2026-08-22T04:00:00.000Z	58 \| moderate	13.481 \| fine	61.758 \| fine	25.398 \| good	0.982 \| good	6.821 \| good	0.257 \| good
2026-08-22T05:00:00.000Z	58 \| moderate	13.026 \| fine	59.017 \| fine	24.033 \| good	1.056 \| good	14.115 \| good	0.252 \| good
2026-08-22T06:00:00.000Z	56 \| moderate	12.38 \| fine	51.059 \| good	22.808 \| good	1.059 \| good	17.483 \| good	0.218 \| good
2026-08-22T07:00:00.000Z	54 \| moderate	10.778 \| good	46.633 \| good	20.286 \| good	0.951 \| good	16.004 \| good	0.213 \| good
2026-08-22T08:00:00.000Z	49 \| good	9.245 \| good	35.42 \| good	18.119 \| good	1.072 \| good	13.988 \| good	0.216 \| good
2026-08-22T09:00:00.000Z	38 \| good	6.785 \| good	28.237 \| good	19.962 \| good	1.013 \| good	6.107 \| good	0.279 \| good
2026-08-22T10:00:00.000Z	33 \| good	6.224 \| good	26.595 \| good	21.88 \| good	0.976 \| good	8.986 \| good	0.208 \| good
2026-08-22T11:00:00.000Z	38 \| good	6.781 \| good	29.12 \| good	18.832 \| good	1.115 \| good	7.388 \| good	0.203 \| good
2026-08-22T12:00:00.000Z	44 \| good	7.705 \| good	35.324 \| good	17.437 \| good	1.183 \| good	5.556 \| good	0.2 \| good
2026-08-22T13:00:00.000Z	44 \| good	7.75 \| good	34.147 \| good	18.958 \| good	1.148 \| good	5.104 \| good	0.198 \| good
2026-08-22T14:00:00.000Z	49 \| good	8.521 \| good	37.641 \| good	19.883 \| good	1.175 \| good	7.457 \| good	0.277 \| good
2026-08-22T15:00:00.000Z	44 \| good	8.269 \| good	36.909 \| good	22.359 \| good	0.979 \| good	4.302 \| good	0.232 \| good
2026-08-22T16:00:00.000Z	44 \| good	8.034 \| good	36.416 \| good	25.265 \| good	0.875 \| good	3.813 \| good	0.23 \| good
2026-08-22T17:00:00.000Z	44 \| good	7.905 \| good	34.422 \| good	27.332 \| good	0.845 \| good	3.203 \| good	0.214 \| good
2026-08-22T18:00:00.000Z	44 \| good	8.228 \| good	37.503 \| good	28.944 \| good	0.789 \| good	2.662 \| good	0.214 \| good
2026-08-22T19:00:00.000Z	49 \| good	8.581 \| good	37.447 \| good	29.568 \| good	0.847 \| good	2.663 \| good	0.183 \| good
2026-08-22T20:00:00.000Z	49 \| good	8.568 \| good	37.717 \| good	32.745 \| good	0.908 \| good	2.414 \| good	0.214 \| good
2026-08-22T21:00:00.000Z	44 \| good	8.162 \| good	35.844 \| good	35.331 \| good	1.176 \| good	2.381 \| good	0.183 \| good
2026-08-22T22:00:00.000Z	44 \| good	8.155 \| good	33.199 \| good	36.313 \| good	0.809 \| good	2.623 \| good	0.214 \| good
2026-08-22T23:00:00.000Z	44 \| good	8.084 \| good	34.906 \| good	36.441 \| good	0.764 \| good	2.295 \| good	0.214 \| good
2026-08-23T00:00:00.000Z	44 \| good	7.966 \| good	34.695 \| good	35.352 \| good	0.825 \| good	3.361 \| good	0.183 \| good
2026-08-23T01:00:00.000Z	44 \| good	8.163 \| good	35.925 \| good	32.319 \| good	0.826 \| good	4.008 \| good	0.246 \| good
2026-08-23T02:00:00.000Z	44 \| good	8.25 \| good	36.262 \| good	28.052 \| good	0.775 \| good	4.102 \| good	0.246 \| good
2026-08-23T03:00:00.000Z	24 \| good	3.038 \| good	12.324 \| good	25.556 \| good	0.421 \| good	8.204 \| good	0.178 \| good
2026-08-23T04:00:00.000Z	44 \| good	8.431 \| good	37.52 \| good	24.114 \| good	0.803 \| good	7.467 \| good	0.278 \| good
2026-08-23T05:00:00.000Z	44 \| good	8.389 \| good	34.097 \| good	20.722 \| good	0.91 \| good	4.81 \| good	0.249 \| good
2026-08-23T06:00:00.000Z	44 \| good	8.358 \| good	32.543 \| good	16.376 \| good	0.842 \| good	6.169 \| good	0.246 \| good
2026-08-23T07:00:00.000Z	49 \| good	8.576 \| good	39.988 \| good	11.52 \| good	0.73 \| good	7.514 \| good	0.246 \| good
2026-08-23T08:00:00.000Z	44 \| good	7.657 \| good	31.363 \| good	9.193 \| good	0.791 \| good	7.081 \| good	0.185 \| good
2026-08-23T09:00:00.000Z	44 \| good	8.443 \| good	29.097 \| good	10.299 \| good	0.881 \| good	6.107 \| good	0.188 \| good
2026-08-23T10:00:00.000Z	49 \| good	8.935 \| good	36.171 \| good	10.182 \| good	0.815 \| good	5.513 \| good	0.188 \| good
2026-08-23T11:00:00.000Z	49 \| good	9.212 \| good	38.008 \| good	11.925 \| good	0.897 \| good	5.507 \| good	0.188 \| good
2026-08-23T12:00:00.000Z	49 \| good	9.096 \| good	40.167 \| good	11.566 \| good	0.839 \| good	5.076 \| good	0.185 \| good
2026-08-23T13:00:00.000Z	49 \| good	8.994 \| good	38.095 \| good	11.539 \| good	1.554 \| good	5.345 \| good	0.185 \| good
2026-08-23T14:00:00.000Z	54 \| moderate	10.732 \| good	51.307 \| good	13.716 \| good	2.246 \| good	4.147 \| good	0.25 \| good
2026-08-23T15:00:00.000Z	62 \| moderate	14.898 \| fine	57.724 \| fine	17.011 \| good	1.867 \| good	3.483 \| good	0.23 \| good
2026-08-23T16:00:00.000Z	62 \| moderate	14.998 \| fine	62.07 \| fine	21.325 \| good	1.424 \| good	2.691 \| good	0.242 \| good
2026-08-23T17:00:00.000Z	96 \| moderate	32.823 \| fine	126.335 \| fine	25.426 \| good	1.098 \| good	2.205 \| good	0.24 \| good
2026-08-23T18:00:00.000Z	99 \| moderate	34.706 \| fine	138.328 \| fine	27.173 \| good	0.952 \| good	2.069 \| good	0.196 \| good
2026-08-23T19:00:00.000Z	90 \| moderate	29.911 \| fine	123.515 \| fine	28.093 \| good	0.861 \| good	2.026 \| good	0.227 \| good
2026-08-23T20:00:00.000Z	77 \| moderate	22.665 \| fine	96.452 \| fine	27.951 \| good	0.939 \| good	1.978 \| good	0.214 \| good
2026-08-23T21:00:00.000Z	69 \| moderate	18.998 \| fine	75.374 \| fine	27.267 \| good	1.043 \| good	1.876 \| good	0.227 \| good
2026-08-23T22:00:00.000Z	66 \| moderate	16.685 \| fine	71.315 \| fine	27.775 \| good	3.027 \| good	1.933 \| good	0.214 \| good
2026-08-23T23:00:00.000Z	64 \| moderate	15.642 \| fine	71.549 \| fine	28.412 \| good	2.05 \| good	2.386 \| good	0.194 \| good
2026-08-24T00:00:00.000Z	60 \| moderate	13.536 \| fine	44.658 \| good	28.504 \| good	1.865 \| good	3.236 \| good	0.194 \| good
2026-08-24T01:00:00.000Z	62 \| moderate	15.253 \| fine	59.811 \| fine	24.831 \| good	1.366 \| good	2.148 \| good	0.227 \| good
2026-08-24T01:00:00.000Z	62 \| moderate	14.617 \| fine	65.902 \| fine	24.929 \| good	1.612 \| good	1.802 \| good	0.227 \| good
2026-08-24T02:00:00.000Z	33 \| good	5.756 \| good	25.203 \| good	20.578 \| good	0.423 \| good	10.343 \| good	0.182 \| good
2026-08-24T03:00:00.000Z	33 \| good	5.782 \| good	25.297 \| good	19.333 \| good	0.464 \| good	12.054 \| good	0.186 \| good
2026-08-24T04:00:00.000Z	33 \| good	5.875 \| good	25.438 \| good	16.088 \| good	0.501 \| good	13.874 \| good	0.191 \| good
2026-08-24T05:00:00.000Z	27 \| good	5.198 \| good	22.268 \| good	13.831 \| good	0.516 \| good	13.642 \| good	0.193 \| good
2026-08-24T06:00:00.000Z	27 \| good	4.8 \| good	21.1 \| good	13.437 \| good	0.535 \| good	13.285 \| good	0.196 \| good
2026-08-24T07:00:00.000Z	22 \| good	4.303 \| good	18.588 \| good	14.292 \| good	0.581 \| good	14.381 \| good	0.203 \| good
2026-08-24T08:00:00.000Z	22 \| good	4.138 \| good	18.212 \| good	11.606 \| good	0.641 \| good	15.721 \| good	0.211 \| good
2026-08-24T09:00:00.000Z	22 \| good	4.385 \| good	19.307 \| good	6.22 \| good	0.714 \| good	17.019 \| good	0.221 \| good
2026-08-24T10:00:00.000Z	33 \| good	6.334 \| good	28.226 \| good	4.823 \| good	0.791 \| good	17.312 \| good	0.228 \| good
2026-08-24T11:00:00.000Z	44 \| good	7.921 \| good	35.016 \| good	3.205 \| good	0.869 \| good	18.052 \| good	0.24 \| good
2026-08-24T12:00:00.000Z	52 \| moderate	9.544 \| good	42.262 \| good	5.522 \| good	0.954 \| good	15.374 \| good	0.252 \| good
2026-08-24T13:00:00.000Z	52 \| moderate	9.92 \| good	44.076 \| good	14.491 \| good	1.088 \| good	11.651 \| good	0.254 \| good
2026-08-24T14:00:00.000Z	52 \| moderate	10.365 \| good	46.085 \| good	19.91 \| good	1.534 \| good	9.673 \| good	0.211 \| good
2026-08-24T15:00:00.000Z	54 \| moderate	10.613 \| good	46.997 \| good	23.663 \| good	1.639 \| good	7.519 \| good	0.19 \| good
2026-08-24T16:00:00.000Z	49 \| good	8.614 \| good	37.615 \| good	29.752 \| good	1.479 \| good	5.649 \| good	0.177 \| good
2026-08-24T17:00:00.000Z	44 \| good	7.811 \| good	34.383 \| good	31.729 \| good	1.208 \| good	3.993 \| good	0.168 \| good
2026-08-24T18:00:00.000Z	44 \| good	7.515 \| good	33.413 \| good	31.603 \| good	0.872 \| good	2.542 \| good	0.159 \| good
2026-08-24T19:00:00.000Z	38 \| good	6.916 \| good	30.678 \| good	30.47 \| good	0.624 \| good	1.752 \| good	0.153 \| good
2026-08-24T20:00:00.000Z	38 \| good	7.038 \| good	31.469 \| good	30.191 \| good	0.511 \| good	1.45 \| good	0.15 \| good
2026-08-24T21:00:00.000Z	38 \| good	6.846 \| good	30.534 \| good	32.253 \| good	0.49 \| good	1.448 \| good	0.15 \| good
2026-08-24T22:00:00.000Z	38 \| good	6.724 \| good	29.977 \| good	34.347 \| good	0.522 \| good	1.825 \| good	0.151 \| good
2026-08-24T23:00:00.000Z	49 \| good	8.539 \| good	37.53 \| good	30.697 \| good	0.545 \| good	2.73 \| good	0.156 \| good
2026-08-25T00:00:00.000Z	49 \| good	9.474 \| good	42.294 \| good	23.834 \| good	0.587 \| good	7.329 \| good	0.186 \| good
2026-08-25T01:00:00.000Z	58 \| moderate	13.046 \| fine	58.584 \| fine	15.491 \| good	0.697 \| good	15.937 \| good	0.229 \| good
2026-08-25T02:00:00.000Z	58 \| moderate	12.915 \| fine	58.442 \| fine	13.086 \| good	0.818 \| good	21.677 \| good	0.253 \| good
2026-08-25T03:00:00.000Z	58 \| moderate	12.535 \| fine	57.02 \| fine	17.579 \| good	0.929 \| good	22.079 \| good	0.253 \| good
2026-08-25T04:00:00.000Z	56 \| moderate	12.177 \| fine	54.52 \| good	17.23 \| good	1.031 \| good	21.531 \| good	0.246 \| good
2026-08-25T05:00:00.000Z	56 \| moderate	12.403 \| fine	55.606 \| fine	13.465 \| good	1.14 \| good	21.495 \| good	0.241 \| good
2026-08-25T06:00:00.000Z	56 \| moderate	11.763 \| good	51.969 \| good	11.366 \| good	1.244 \| good	20.288 \| good	0.238 \| good
2026-08-25T07:00:00.000Z	54 \| moderate	10.956 \| good	48.498 \| good	10.207 \| good	1.364 \| good	19.329 \| good	0.234 \| good
2026-08-25T08:00:00.000Z	54 \| moderate	11.493 \| good	51.381 \| good	7.367 \| good	1.497 \| good	19.114 \| good	0.234 \| good
2026-08-25T09:00:00.000Z	56 \| moderate	12.063 \| good	54.399 \| good	3.849 \| good	1.624 \| good	19.597 \| good	0.238 \| good
2026-08-25T10:00:00.000Z	60 \| moderate	14.049 \| fine	63.409 \| fine	2.719 \| good	1.838 \| good	20.203 \| good	0.244 \| good
2026-08-25T11:00:00.000Z	64 \| moderate	15.578 \| fine	69.739 \| fine	0.456 \| good	2.035 \| good	21.409 \| good	0.253 \| good
2026-08-25T12:00:00.000Z	69 \| moderate	18.659 \| fine	82.358 \| fine	2.333 \| good	2.15 \| good	18.794 \| good	0.263 \| good
2026-08-25T13:00:00.000Z	66 \| moderate	16.81 \| fine	74.533 \| fine	12.389 \| good	2.246 \| good	15.203 \| good	0.272 \| good
2026-08-25T14:00:00.000Z	60 \| moderate	14.334 \| fine	63.804 \| fine	22.277 \| good	2.824 \| good	12.985 \| good	0.266 \| good
2026-08-25T15:00:00.000Z	58 \| moderate	13.142 \| fine	59.108 \| fine	28.077 \| good	3.596 \| good	9.894 \| good	0.23 \| good
2026-08-25T16:00:00.000Z	56 \| moderate	12.029 \| good	53.849 \| good	36.837 \| good	3.212 \| good	6.576 \| good	0.201 \| good
2026-08-25T17:00:00.000Z	58 \| moderate	13.24 \| fine	60.271 \| fine	41.757 \| good	2.397 \| good	3.903 \| good	0.18 \| good
2026-08-25T18:00:00.000Z	62 \| moderate	14.571 \| fine	64.966 \| fine	47.557 \| good	1.949 \| good	2.631 \| good	0.174 \| good
2026-08-25T19:00:00.000Z	62 \| moderate	14.954 \| fine	66.755 \| fine	53.341 \| good	1.657 \| good	2.018 \| good	0.171 \| good
2026-08-25T20:00:00.000Z	62 \| moderate	14.992 \| fine	66.907 \| fine	56.408 \| fine	1.442 \| good	1.843 \| good	0.169 \| good
2026-08-25T21:00:00.000Z	60 \| moderate	14.345 \| fine	64.399 \| fine	53.863 \| good	1.3 \| good	1.877 \| good	0.167 \| good
2026-08-25T22:00:00.000Z	56 \| moderate	12.433 \| fine	56.356 \| fine	49.995 \| good	1.18 \| good	2.101 \| good	0.166 \| good
2026-08-25T23:00:00.000Z	56 \| moderate	12.419 \| fine	56.266 \| fine	46.062 \| good	1.053 \| good	2.923 \| good	0.169 \| good
2026-08-26T00:00:00.000Z	56 \| moderate	11.571 \| good	11.802 \| good	44.907 \| good	0.952 \| good	8.066 \| good	0.199 \| good
2026-08-26T01:00:00.000Z	54 \| moderate	11.306 \| good	50.304 \| good	26.606 \| good	0.932 \| good	14.674 \| good	0.229 \| good

Westchester

Get reliable air quality data to drive your business

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

0.21ppm

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 06:00:00 on 2026-08-23.

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 2026-08-23.

What is the AQI in Westchester, Illinois right now?

As of now, the AQI in Westchester, Illinois is 62, 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 14.617 μg/m³.

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

The PM₁₀ concentration in Westchester, Illinois is 65.902 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 0.227 ppm.

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

Currently, Westchester, Illinois has a sulfur dioxide (SO₂) concentration of 1.612 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 24.929 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 1.802 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-22T02:00:00.000Z	58 \| moderate	12.898 \| fine	49.626 \| good	33.068 \| good	1.138 \| good	5.891 \| good	0.29 \| good
2026-08-22T03:00:00.000Z	60 \| moderate	13.799 \| fine	51.075 \| good	24.821 \| good	0.948 \| good	7.344 \| good	0.257 \| good
2026-08-22T04:00:00.000Z	58 \| moderate	13.481 \| fine	61.758 \| fine	25.398 \| good	0.982 \| good	6.821 \| good	0.257 \| good
2026-08-22T05:00:00.000Z	58 \| moderate	13.026 \| fine	59.017 \| fine	24.033 \| good	1.056 \| good	14.115 \| good	0.252 \| good
2026-08-22T06:00:00.000Z	56 \| moderate	12.38 \| fine	51.059 \| good	22.808 \| good	1.059 \| good	17.483 \| good	0.218 \| good
2026-08-22T07:00:00.000Z	54 \| moderate	10.778 \| good	46.633 \| good	20.286 \| good	0.951 \| good	16.004 \| good	0.213 \| good
2026-08-22T08:00:00.000Z	49 \| good	9.245 \| good	35.42 \| good	18.119 \| good	1.072 \| good	13.988 \| good	0.216 \| good
2026-08-22T09:00:00.000Z	38 \| good	6.785 \| good	28.237 \| good	19.962 \| good	1.013 \| good	6.107 \| good	0.279 \| good
2026-08-22T10:00:00.000Z	33 \| good	6.224 \| good	26.595 \| good	21.88 \| good	0.976 \| good	8.986 \| good	0.208 \| good
2026-08-22T11:00:00.000Z	38 \| good	6.781 \| good	29.12 \| good	18.832 \| good	1.115 \| good	7.388 \| good	0.203 \| good
2026-08-22T12:00:00.000Z	44 \| good	7.705 \| good	35.324 \| good	17.437 \| good	1.183 \| good	5.556 \| good	0.2 \| good
2026-08-22T13:00:00.000Z	44 \| good	7.75 \| good	34.147 \| good	18.958 \| good	1.148 \| good	5.104 \| good	0.198 \| good
2026-08-22T14:00:00.000Z	49 \| good	8.521 \| good	37.641 \| good	19.883 \| good	1.175 \| good	7.457 \| good	0.277 \| good
2026-08-22T15:00:00.000Z	44 \| good	8.269 \| good	36.909 \| good	22.359 \| good	0.979 \| good	4.302 \| good	0.232 \| good
2026-08-22T16:00:00.000Z	44 \| good	8.034 \| good	36.416 \| good	25.265 \| good	0.875 \| good	3.813 \| good	0.23 \| good
2026-08-22T17:00:00.000Z	44 \| good	7.905 \| good	34.422 \| good	27.332 \| good	0.845 \| good	3.203 \| good	0.214 \| good
2026-08-22T18:00:00.000Z	44 \| good	8.228 \| good	37.503 \| good	28.944 \| good	0.789 \| good	2.662 \| good	0.214 \| good
2026-08-22T19:00:00.000Z	49 \| good	8.581 \| good	37.447 \| good	29.568 \| good	0.847 \| good	2.663 \| good	0.183 \| good
2026-08-22T20:00:00.000Z	49 \| good	8.568 \| good	37.717 \| good	32.745 \| good	0.908 \| good	2.414 \| good	0.214 \| good
2026-08-22T21:00:00.000Z	44 \| good	8.162 \| good	35.844 \| good	35.331 \| good	1.176 \| good	2.381 \| good	0.183 \| good
2026-08-22T22:00:00.000Z	44 \| good	8.155 \| good	33.199 \| good	36.313 \| good	0.809 \| good	2.623 \| good	0.214 \| good
2026-08-22T23:00:00.000Z	44 \| good	8.084 \| good	34.906 \| good	36.441 \| good	0.764 \| good	2.295 \| good	0.214 \| good
2026-08-23T00:00:00.000Z	44 \| good	7.966 \| good	34.695 \| good	35.352 \| good	0.825 \| good	3.361 \| good	0.183 \| good
2026-08-23T01:00:00.000Z	44 \| good	8.163 \| good	35.925 \| good	32.319 \| good	0.826 \| good	4.008 \| good	0.246 \| good
2026-08-23T02:00:00.000Z	44 \| good	8.25 \| good	36.262 \| good	28.052 \| good	0.775 \| good	4.102 \| good	0.246 \| good
2026-08-23T03:00:00.000Z	24 \| good	3.038 \| good	12.324 \| good	25.556 \| good	0.421 \| good	8.204 \| good	0.178 \| good
2026-08-23T04:00:00.000Z	44 \| good	8.431 \| good	37.52 \| good	24.114 \| good	0.803 \| good	7.467 \| good	0.278 \| good
2026-08-23T05:00:00.000Z	44 \| good	8.389 \| good	34.097 \| good	20.722 \| good	0.91 \| good	4.81 \| good	0.249 \| good
2026-08-23T06:00:00.000Z	44 \| good	8.358 \| good	32.543 \| good	16.376 \| good	0.842 \| good	6.169 \| good	0.246 \| good
2026-08-23T07:00:00.000Z	49 \| good	8.576 \| good	39.988 \| good	11.52 \| good	0.73 \| good	7.514 \| good	0.246 \| good
2026-08-23T08:00:00.000Z	44 \| good	7.657 \| good	31.363 \| good	9.193 \| good	0.791 \| good	7.081 \| good	0.185 \| good
2026-08-23T09:00:00.000Z	44 \| good	8.443 \| good	29.097 \| good	10.299 \| good	0.881 \| good	6.107 \| good	0.188 \| good
2026-08-23T10:00:00.000Z	49 \| good	8.935 \| good	36.171 \| good	10.182 \| good	0.815 \| good	5.513 \| good	0.188 \| good
2026-08-23T11:00:00.000Z	49 \| good	9.212 \| good	38.008 \| good	11.925 \| good	0.897 \| good	5.507 \| good	0.188 \| good
2026-08-23T12:00:00.000Z	49 \| good	9.096 \| good	40.167 \| good	11.566 \| good	0.839 \| good	5.076 \| good	0.185 \| good
2026-08-23T13:00:00.000Z	49 \| good	8.994 \| good	38.095 \| good	11.539 \| good	1.554 \| good	5.345 \| good	0.185 \| good
2026-08-23T14:00:00.000Z	54 \| moderate	10.732 \| good	51.307 \| good	13.716 \| good	2.246 \| good	4.147 \| good	0.25 \| good
2026-08-23T15:00:00.000Z	62 \| moderate	14.898 \| fine	57.724 \| fine	17.011 \| good	1.867 \| good	3.483 \| good	0.23 \| good
2026-08-23T16:00:00.000Z	62 \| moderate	14.998 \| fine	62.07 \| fine	21.325 \| good	1.424 \| good	2.691 \| good	0.242 \| good
2026-08-23T17:00:00.000Z	96 \| moderate	32.823 \| fine	126.335 \| fine	25.426 \| good	1.098 \| good	2.205 \| good	0.24 \| good
2026-08-23T18:00:00.000Z	99 \| moderate	34.706 \| fine	138.328 \| fine	27.173 \| good	0.952 \| good	2.069 \| good	0.196 \| good
2026-08-23T19:00:00.000Z	90 \| moderate	29.911 \| fine	123.515 \| fine	28.093 \| good	0.861 \| good	2.026 \| good	0.227 \| good
2026-08-23T20:00:00.000Z	77 \| moderate	22.665 \| fine	96.452 \| fine	27.951 \| good	0.939 \| good	1.978 \| good	0.214 \| good
2026-08-23T21:00:00.000Z	69 \| moderate	18.998 \| fine	75.374 \| fine	27.267 \| good	1.043 \| good	1.876 \| good	0.227 \| good
2026-08-23T22:00:00.000Z	66 \| moderate	16.685 \| fine	71.315 \| fine	27.775 \| good	3.027 \| good	1.933 \| good	0.214 \| good
2026-08-23T23:00:00.000Z	64 \| moderate	15.642 \| fine	71.549 \| fine	28.412 \| good	2.05 \| good	2.386 \| good	0.194 \| good
2026-08-24T00:00:00.000Z	60 \| moderate	13.536 \| fine	44.658 \| good	28.504 \| good	1.865 \| good	3.236 \| good	0.194 \| good
2026-08-24T01:00:00.000Z	62 \| moderate	15.253 \| fine	59.811 \| fine	24.831 \| good	1.366 \| good	2.148 \| good	0.227 \| good
2026-08-24T01:00:00.000Z	62 \| moderate	14.617 \| fine	65.902 \| fine	24.929 \| good	1.612 \| good	1.802 \| good	0.227 \| good
2026-08-24T02:00:00.000Z	33 \| good	5.756 \| good	25.203 \| good	20.578 \| good	0.423 \| good	10.343 \| good	0.182 \| good
2026-08-24T03:00:00.000Z	33 \| good	5.782 \| good	25.297 \| good	19.333 \| good	0.464 \| good	12.054 \| good	0.186 \| good
2026-08-24T04:00:00.000Z	33 \| good	5.875 \| good	25.438 \| good	16.088 \| good	0.501 \| good	13.874 \| good	0.191 \| good
2026-08-24T05:00:00.000Z	27 \| good	5.198 \| good	22.268 \| good	13.831 \| good	0.516 \| good	13.642 \| good	0.193 \| good
2026-08-24T06:00:00.000Z	27 \| good	4.8 \| good	21.1 \| good	13.437 \| good	0.535 \| good	13.285 \| good	0.196 \| good
2026-08-24T07:00:00.000Z	22 \| good	4.303 \| good	18.588 \| good	14.292 \| good	0.581 \| good	14.381 \| good	0.203 \| good
2026-08-24T08:00:00.000Z	22 \| good	4.138 \| good	18.212 \| good	11.606 \| good	0.641 \| good	15.721 \| good	0.211 \| good
2026-08-24T09:00:00.000Z	22 \| good	4.385 \| good	19.307 \| good	6.22 \| good	0.714 \| good	17.019 \| good	0.221 \| good
2026-08-24T10:00:00.000Z	33 \| good	6.334 \| good	28.226 \| good	4.823 \| good	0.791 \| good	17.312 \| good	0.228 \| good
2026-08-24T11:00:00.000Z	44 \| good	7.921 \| good	35.016 \| good	3.205 \| good	0.869 \| good	18.052 \| good	0.24 \| good
2026-08-24T12:00:00.000Z	52 \| moderate	9.544 \| good	42.262 \| good	5.522 \| good	0.954 \| good	15.374 \| good	0.252 \| good
2026-08-24T13:00:00.000Z	52 \| moderate	9.92 \| good	44.076 \| good	14.491 \| good	1.088 \| good	11.651 \| good	0.254 \| good
2026-08-24T14:00:00.000Z	52 \| moderate	10.365 \| good	46.085 \| good	19.91 \| good	1.534 \| good	9.673 \| good	0.211 \| good
2026-08-24T15:00:00.000Z	54 \| moderate	10.613 \| good	46.997 \| good	23.663 \| good	1.639 \| good	7.519 \| good	0.19 \| good
2026-08-24T16:00:00.000Z	49 \| good	8.614 \| good	37.615 \| good	29.752 \| good	1.479 \| good	5.649 \| good	0.177 \| good
2026-08-24T17:00:00.000Z	44 \| good	7.811 \| good	34.383 \| good	31.729 \| good	1.208 \| good	3.993 \| good	0.168 \| good
2026-08-24T18:00:00.000Z	44 \| good	7.515 \| good	33.413 \| good	31.603 \| good	0.872 \| good	2.542 \| good	0.159 \| good
2026-08-24T19:00:00.000Z	38 \| good	6.916 \| good	30.678 \| good	30.47 \| good	0.624 \| good	1.752 \| good	0.153 \| good
2026-08-24T20:00:00.000Z	38 \| good	7.038 \| good	31.469 \| good	30.191 \| good	0.511 \| good	1.45 \| good	0.15 \| good
2026-08-24T21:00:00.000Z	38 \| good	6.846 \| good	30.534 \| good	32.253 \| good	0.49 \| good	1.448 \| good	0.15 \| good
2026-08-24T22:00:00.000Z	38 \| good	6.724 \| good	29.977 \| good	34.347 \| good	0.522 \| good	1.825 \| good	0.151 \| good
2026-08-24T23:00:00.000Z	49 \| good	8.539 \| good	37.53 \| good	30.697 \| good	0.545 \| good	2.73 \| good	0.156 \| good
2026-08-25T00:00:00.000Z	49 \| good	9.474 \| good	42.294 \| good	23.834 \| good	0.587 \| good	7.329 \| good	0.186 \| good
2026-08-25T01:00:00.000Z	58 \| moderate	13.046 \| fine	58.584 \| fine	15.491 \| good	0.697 \| good	15.937 \| good	0.229 \| good
2026-08-25T02:00:00.000Z	58 \| moderate	12.915 \| fine	58.442 \| fine	13.086 \| good	0.818 \| good	21.677 \| good	0.253 \| good
2026-08-25T03:00:00.000Z	58 \| moderate	12.535 \| fine	57.02 \| fine	17.579 \| good	0.929 \| good	22.079 \| good	0.253 \| good
2026-08-25T04:00:00.000Z	56 \| moderate	12.177 \| fine	54.52 \| good	17.23 \| good	1.031 \| good	21.531 \| good	0.246 \| good
2026-08-25T05:00:00.000Z	56 \| moderate	12.403 \| fine	55.606 \| fine	13.465 \| good	1.14 \| good	21.495 \| good	0.241 \| good
2026-08-25T06:00:00.000Z	56 \| moderate	11.763 \| good	51.969 \| good	11.366 \| good	1.244 \| good	20.288 \| good	0.238 \| good
2026-08-25T07:00:00.000Z	54 \| moderate	10.956 \| good	48.498 \| good	10.207 \| good	1.364 \| good	19.329 \| good	0.234 \| good
2026-08-25T08:00:00.000Z	54 \| moderate	11.493 \| good	51.381 \| good	7.367 \| good	1.497 \| good	19.114 \| good	0.234 \| good
2026-08-25T09:00:00.000Z	56 \| moderate	12.063 \| good	54.399 \| good	3.849 \| good	1.624 \| good	19.597 \| good	0.238 \| good
2026-08-25T10:00:00.000Z	60 \| moderate	14.049 \| fine	63.409 \| fine	2.719 \| good	1.838 \| good	20.203 \| good	0.244 \| good
2026-08-25T11:00:00.000Z	64 \| moderate	15.578 \| fine	69.739 \| fine	0.456 \| good	2.035 \| good	21.409 \| good	0.253 \| good
2026-08-25T12:00:00.000Z	69 \| moderate	18.659 \| fine	82.358 \| fine	2.333 \| good	2.15 \| good	18.794 \| good	0.263 \| good
2026-08-25T13:00:00.000Z	66 \| moderate	16.81 \| fine	74.533 \| fine	12.389 \| good	2.246 \| good	15.203 \| good	0.272 \| good
2026-08-25T14:00:00.000Z	60 \| moderate	14.334 \| fine	63.804 \| fine	22.277 \| good	2.824 \| good	12.985 \| good	0.266 \| good
2026-08-25T15:00:00.000Z	58 \| moderate	13.142 \| fine	59.108 \| fine	28.077 \| good	3.596 \| good	9.894 \| good	0.23 \| good
2026-08-25T16:00:00.000Z	56 \| moderate	12.029 \| good	53.849 \| good	36.837 \| good	3.212 \| good	6.576 \| good	0.201 \| good
2026-08-25T17:00:00.000Z	58 \| moderate	13.24 \| fine	60.271 \| fine	41.757 \| good	2.397 \| good	3.903 \| good	0.18 \| good
2026-08-25T18:00:00.000Z	62 \| moderate	14.571 \| fine	64.966 \| fine	47.557 \| good	1.949 \| good	2.631 \| good	0.174 \| good
2026-08-25T19:00:00.000Z	62 \| moderate	14.954 \| fine	66.755 \| fine	53.341 \| good	1.657 \| good	2.018 \| good	0.171 \| good
2026-08-25T20:00:00.000Z	62 \| moderate	14.992 \| fine	66.907 \| fine	56.408 \| fine	1.442 \| good	1.843 \| good	0.169 \| good
2026-08-25T21:00:00.000Z	60 \| moderate	14.345 \| fine	64.399 \| fine	53.863 \| good	1.3 \| good	1.877 \| good	0.167 \| good
2026-08-25T22:00:00.000Z	56 \| moderate	12.433 \| fine	56.356 \| fine	49.995 \| good	1.18 \| good	2.101 \| good	0.166 \| good
2026-08-25T23:00:00.000Z	56 \| moderate	12.419 \| fine	56.266 \| fine	46.062 \| good	1.053 \| good	2.923 \| good	0.169 \| good
2026-08-26T00:00:00.000Z	56 \| moderate	11.571 \| good	11.802 \| good	44.907 \| good	0.952 \| good	8.066 \| good	0.199 \| good
2026-08-26T01:00:00.000Z	54 \| moderate	11.306 \| good	50.304 \| good	26.606 \| good	0.932 \| good	14.674 \| good	0.229 \| 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)