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

Currently, Westchester, Illinois has a sulfur dioxide (SO2) concentration of 0.901 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 8.041 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 32.755 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 10.399 μg/m3.

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

The PM10 concentration in Westchester, Illinois is 46.476 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)

10.40 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

46.48 μg/m³

155

255

425

605+

Ozone (O₃)

8.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.90 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

32.76 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.39 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
2026-02-11T08:00:00.000Z	44 \| good	8.142 \| good	25.83 \| good	18.022 \| good	0.848 \| good	2.309 \| good	0.153 \| good
2026-02-11T09:00:00.000Z	38 \| good	7.018 \| good	22.564 \| good	19.685 \| good	0.735 \| good	2.928 \| good	0.168 \| good
2026-02-11T10:00:00.000Z	33 \| good	6.2 \| good	20.401 \| good	21.335 \| good	0.765 \| good	5.234 \| good	0.168 \| good
2026-02-11T11:00:00.000Z	33 \| good	6.016 \| good	19.967 \| good	20.805 \| good	0.797 \| good	6.095 \| good	0.181 \| good
2026-02-11T12:00:00.000Z	38 \| good	6.579 \| good	29.059 \| good	19.366 \| good	1.622 \| good	11.471 \| good	0.2 \| good
2026-02-11T13:00:00.000Z	38 \| good	6.579 \| good	29.059 \| good	16.218 \| good	2.428 \| good	14.963 \| good	0.213 \| good
2026-02-11T14:00:00.000Z	49 \| good	9.186 \| good	41.114 \| good	14.702 \| good	2.657 \| good	18.844 \| good	0.283 \| good
2026-02-11T15:00:00.000Z	52 \| moderate	9.873 \| good	43.566 \| good	16.368 \| good	2.209 \| good	15.965 \| good	0.246 \| good
2026-02-11T16:00:00.000Z	52 \| moderate	9.939 \| good	44.469 \| good	17.625 \| good	2.393 \| good	12.934 \| good	0.213 \| good
2026-02-11T17:00:00.000Z	49 \| good	9.127 \| good	40.557 \| good	17.907 \| good	3.189 \| good	11.427 \| good	0.2 \| good
2026-02-11T18:00:00.000Z	49 \| good	8.574 \| good	38.528 \| good	18.872 \| good	1.902 \| good	9.733 \| good	0.2 \| good
2026-02-11T19:00:00.000Z	44 \| good	8.006 \| good	35.709 \| good	22.221 \| good	1.184 \| good	7.567 \| good	0.2 \| good
2026-02-11T20:00:00.000Z	38 \| good	7.301 \| good	32.552 \| good	22.726 \| good	1.381 \| good	7.066 \| good	0.2 \| good
2026-02-11T21:00:00.000Z	33 \| good	6.446 \| good	28.751 \| good	27.024 \| good	1.246 \| good	6.671 \| good	0.18 \| good
2026-02-11T22:00:00.000Z	33 \| good	5.624 \| good	24.58 \| good	29.349 \| good	1.057 \| good	5.332 \| good	0.213 \| good
2026-02-11T23:00:00.000Z	28 \| good	5.142 \| good	22.702 \| good	29.742 \| good	0.961 \| good	3.853 \| good	0.213 \| good
2026-02-12T00:00:00.000Z	27 \| good	5.005 \| good	21.927 \| good	27.064 \| good	0.85 \| good	4.044 \| good	0.291 \| good
2026-02-12T01:00:00.000Z	33 \| good	5.769 \| good	25.785 \| good	25.208 \| good	0.739 \| good	13.844 \| good	0.252 \| good
2026-02-12T02:00:00.000Z	38 \| good	7.277 \| good	32.164 \| good	22.136 \| good	0.778 \| good	19.431 \| good	0.239 \| good
2026-02-12T03:00:00.000Z	52 \| moderate	9.818 \| good	43.718 \| good	21.822 \| good	0.967 \| good	25.689 \| good	0.226 \| good
2026-02-12T04:00:00.000Z	54 \| moderate	10.801 \| good	47.752 \| good	15.165 \| good	0.895 \| good	23.274 \| good	0.241 \| good
2026-02-12T05:00:00.000Z	54 \| moderate	11.068 \| good	49.284 \| good	12.133 \| good	1.734 \| good	23.245 \| good	0.289 \| good
2026-02-12T06:00:00.000Z	54 \| moderate	11.457 \| good	51.222 \| good	8.908 \| good	1.354 \| good	21.391 \| good	0.269 \| good
2026-02-12T07:00:00.000Z	54 \| moderate	11.457 \| good	51.222 \| good	9.243 \| good	1.925 \| good	21.791 \| good	0.297 \| good
2026-02-12T08:00:00.000Z	54 \| moderate	11.126 \| good	39.9 \| good	5.993 \| good	2.048 \| good	22.41 \| good	0.291 \| good
2026-02-12T09:00:00.000Z	54 \| moderate	10.741 \| good	37.166 \| good	8.415 \| good	2.138 \| good	26.414 \| good	0.322 \| good
2026-02-12T10:00:00.000Z	54 \| moderate	10.601 \| good	36.47 \| good	7.237 \| good	2.196 \| good	27.171 \| good	0.306 \| good
2026-02-12T11:00:00.000Z	54 \| moderate	10.616 \| good	36.532 \| good	7.632 \| good	1.47 \| good	24.88 \| good	0.305 \| good
2026-02-12T12:00:00.000Z	54 \| moderate	10.68 \| good	47.773 \| good	5.616 \| good	1.315 \| good	24.831 \| good	0.378 \| good
2026-02-12T13:00:00.000Z	54 \| moderate	10.68 \| good	47.773 \| good	8.886 \| good	1.385 \| good	27.198 \| good	0.354 \| good
2026-02-12T14:00:00.000Z	54 \| moderate	11.034 \| good	49.653 \| good	7.009 \| good	1.344 \| good	29.468 \| good	0.463 \| good
2026-02-12T15:00:00.000Z	56 \| moderate	11.691 \| good	52.178 \| good	8.858 \| good	1.235 \| good	27.921 \| good	0.419 \| good
2026-02-12T16:00:00.000Z	58 \| moderate	12.577 \| fine	56.272 \| fine	14.56 \| good	1.231 \| good	22.206 \| good	0.258 \| good
2026-02-12T17:00:00.000Z	58 \| moderate	13.224 \| fine	59.521 \| fine	15.088 \| good	1.097 \| good	13.494 \| good	0.187 \| good
2026-02-12T18:00:00.000Z	56 \| moderate	12.289 \| fine	55.331 \| fine	17.634 \| good	1.084 \| good	12.731 \| good	0.174 \| good
2026-02-12T19:00:00.000Z	54 \| moderate	11.481 \| good	51.528 \| good	20.124 \| good	1.575 \| good	8.757 \| good	0.148 \| good
2026-02-12T20:00:00.000Z	54 \| moderate	10.998 \| good	49.472 \| good	27.695 \| good	1.027 \| good	9.57 \| good	0.148 \| good
2026-02-12T21:00:00.000Z	54 \| moderate	11.281 \| good	50.686 \| good	32.111 \| good	1.054 \| good	7.232 \| good	0.148 \| good
2026-02-12T22:00:00.000Z	54 \| moderate	11.045 \| good	49.217 \| good	32.655 \| good	1.233 \| good	12.897 \| good	0.147 \| good
2026-02-12T23:00:00.000Z	54 \| moderate	11.313 \| good	51.187 \| good	27.303 \| good	1.953 \| good	14.292 \| good	0.161 \| good
2026-02-13T00:00:00.000Z	56 \| moderate	11.648 \| good	52.147 \| good	28.175 \| good	1.505 \| good	17.059 \| good	0.161 \| good
2026-02-13T01:00:00.000Z	56 \| moderate	11.848 \| good	53.44 \| good	17.263 \| good	0.782 \| good	25.805 \| good	0.24 \| good
2026-02-13T02:00:00.000Z	56 \| moderate	12.297 \| fine	55.642 \| fine	16.153 \| good	0.701 \| good	31.34 \| good	0.242 \| good
2026-02-13T03:00:00.000Z	56 \| moderate	12.064 \| good	54.431 \| good	14.475 \| good	0.727 \| good	32.92 \| good	0.274 \| good
2026-02-13T04:00:00.000Z	56 \| moderate	11.796 \| good	53.37 \| good	13.433 \| good	0.741 \| good	32.508 \| good	0.287 \| good
2026-02-13T05:00:00.000Z	54 \| moderate	11.157 \| good	50.359 \| good	12.38 \| good	0.7 \| good	33.944 \| good	0.318 \| good
2026-02-13T06:00:00.000Z	54 \| moderate	11.157 \| good	50.359 \| good	11.34 \| good	0.725 \| good	34.669 \| good	0.407 \| good
2026-02-13T07:00:00.000Z	52 \| moderate	10.399 \| good	46.476 \| good	8.041 \| good	0.901 \| good	32.755 \| good	0.392 \| good
2026-02-13T07:00:00.000Z	52 \| moderate	10.399 \| good	46.476 \| good	8.041 \| good	0.901 \| good	32.755 \| good	0.392 \| good
2026-02-13T08:00:00.000Z	82 \| moderate	26.009 \| fine	113.043 \| fine	0.17 \| good	2.961 \| good	28.234 \| good	0.346 \| good
2026-02-13T09:00:00.000Z	79 \| moderate	24.369 \| fine	106.4 \| fine	0.283 \| good	3.017 \| good	27.306 \| good	0.348 \| good
2026-02-13T10:00:00.000Z	79 \| moderate	23.914 \| fine	104.103 \| fine	0.578 \| good	2.967 \| good	24.98 \| good	0.336 \| good
2026-02-13T11:00:00.000Z	79 \| moderate	23.542 \| fine	102.558 \| fine	0.486 \| good	2.918 \| good	22.654 \| good	0.324 \| good
2026-02-13T12:00:00.000Z	79 \| moderate	23.815 \| fine	103.829 \| fine	0.489 \| good	2.869 \| good	20.328 \| good	0.312 \| good
2026-02-13T13:00:00.000Z	77 \| moderate	23.3 \| fine	101.922 \| fine	1.093 \| good	3.576 \| good	18.061 \| good	0.314 \| good
2026-02-13T14:00:00.000Z	73 \| moderate	21.087 \| fine	92.685 \| fine	6.249 \| good	4.283 \| good	15.794 \| good	0.316 \| good
2026-02-13T15:00:00.000Z	69 \| moderate	19.064 \| fine	83.897 \| fine	16.285 \| good	4.99 \| good	13.527 \| good	0.319 \| good
2026-02-13T16:00:00.000Z	66 \| moderate	16.929 \| fine	74.948 \| fine	22.305 \| good	5.205 \| good	11.271 \| good	0.292 \| good
2026-02-13T17:00:00.000Z	62 \| moderate	14.515 \| fine	64.693 \| fine	27.956 \| good	5.42 \| good	9.014 \| good	0.265 \| good
2026-02-13T18:00:00.000Z	56 \| moderate	11.691 \| good	51.494 \| good	31.352 \| good	5.635 \| good	6.758 \| good	0.238 \| good
2026-02-13T19:00:00.000Z	49 \| good	9.384 \| good	41.769 \| good	33.061 \| good	4.94 \| good	6.716 \| good	0.232 \| good
2026-02-13T20:00:00.000Z	49 \| good	9.191 \| good	41.049 \| good	34.426 \| good	4.244 \| good	6.675 \| good	0.227 \| good
2026-02-13T21:00:00.000Z	52 \| moderate	10.233 \| good	45.225 \| good	30.717 \| good	3.549 \| good	6.633 \| good	0.221 \| good
2026-02-13T22:00:00.000Z	62 \| moderate	14.562 \| fine	64.984 \| fine	23.108 \| good	3.276 \| good	12.056 \| good	0.25 \| good
2026-02-13T23:00:00.000Z	62 \| moderate	15.257 \| fine	68.242 \| fine	10.475 \| good	3.004 \| good	17.478 \| good	0.279 \| good
2026-02-14T00:00:00.000Z	71 \| moderate	20.103 \| fine	88.865 \| fine	7.634 \| good	2.731 \| good	22.901 \| good	0.308 \| good
2026-02-14T01:00:00.000Z	75 \| moderate	21.627 \| fine	95.283 \| fine	5.776 \| good	2.608 \| good	23.364 \| good	0.311 \| good
2026-02-14T02:00:00.000Z	81 \| moderate	24.929 \| fine	108.392 \| fine	4.066 \| good	2.486 \| good	23.828 \| good	0.313 \| good
2026-02-14T03:00:00.000Z	82 \| moderate	25.599 \| fine	111.56 \| fine	2.832 \| good	2.363 \| good	24.291 \| good	0.316 \| good
2026-02-14T04:00:00.000Z	82 \| moderate	25.541 \| fine	110.992 \| fine	0.435 \| good	2.203 \| good	23.67 \| good	0.316 \| good
2026-02-14T05:00:00.000Z	79 \| moderate	24.122 \| fine	105.278 \| fine	1.042 \| good	2.044 \| good	23.048 \| good	0.316 \| good
2026-02-14T06:00:00.000Z	79 \| moderate	23.648 \| fine	103.724 \| fine	2.087 \| good	1.885 \| good	22.427 \| good	0.317 \| good
2026-02-14T07:00:00.000Z	81 \| moderate	25.057 \| fine	109.676 \| fine	0.997 \| good	1.836 \| good	21.755 \| good	0.312 \| good
2026-02-14T08:00:00.000Z	82 \| moderate	26.333 \| fine	114.289 \| fine	0.651 \| good	1.787 \| good	21.083 \| good	0.308 \| good
2026-02-14T09:00:00.000Z	86 \| moderate	27.502 \| fine	119.453 \| fine	0.628 \| good	1.738 \| good	20.412 \| good	0.303 \| good
2026-02-14T10:00:00.000Z	86 \| moderate	28.455 \| fine	124.006 \| fine	0.443 \| good	1.899 \| good	20.383 \| good	0.314 \| good
2026-02-14T11:00:00.000Z	88 \| moderate	29.464 \| fine	127.831 \| fine	0.269 \| good	2.06 \| good	20.353 \| good	0.325 \| good
2026-02-14T12:00:00.000Z	105 \| sensitive	37.467 \| moderate	163.964 \| moderate	0.113 \| good	2.221 \| good	20.324 \| good	0.337 \| good
2026-02-14T13:00:00.000Z	98 \| moderate	34.379 \| fine	148.567 \| fine	0.506 \| good	2.676 \| good	19.85 \| good	0.39 \| good
2026-02-14T14:00:00.000Z	102 \| sensitive	35.62 \| moderate	154.894 \| fine	1.917 \| good	3.13 \| good	19.377 \| good	0.444 \| good
2026-02-14T15:00:00.000Z	99 \| moderate	34.765 \| fine	150.939 \| fine	8.314 \| good	3.584 \| good	18.903 \| good	0.498 \| good
2026-02-14T16:00:00.000Z	94 \| moderate	32.097 \| fine	138.875 \| fine	16.928 \| good	4.038 \| good	18.552 \| good	0.449 \| good
2026-02-14T17:00:00.000Z	84 \| moderate	27.407 \| fine	118.559 \| fine	22.793 \| good	4.491 \| good	18.201 \| good	0.4 \| good
2026-02-14T18:00:00.000Z	77 \| moderate	22.668 \| fine	99.231 \| fine	26.824 \| good	4.945 \| good	17.851 \| good	0.351 \| good
2026-02-14T19:00:00.000Z	69 \| moderate	19.148 \| fine	84.693 \| fine	29.353 \| good	5.11 \| good	18.749 \| good	0.348 \| good
2026-02-14T20:00:00.000Z	67 \| moderate	17.678 \| fine	77.953 \| fine	32.254 \| good	5.275 \| good	19.648 \| good	0.345 \| good
2026-02-14T21:00:00.000Z	67 \| moderate	17.887 \| fine	79.556 \| fine	29.212 \| good	5.441 \| good	20.546 \| good	0.342 \| good
2026-02-14T22:00:00.000Z	77 \| moderate	23.19 \| fine	101.68 \| fine	19.65 \| good	5.392 \| good	23.665 \| good	0.418 \| good
2026-02-14T23:00:00.000Z	71 \| moderate	20.335 \| fine	89.412 \| fine	11.606 \| good	5.343 \| good	26.785 \| good	0.495 \| good
2026-02-15T00:00:00.000Z	77 \| moderate	22.889 \| fine	99.949 \| fine	9.193 \| good	5.295 \| good	29.904 \| good	0.571 \| good
2026-02-15T01:00:00.000Z	79 \| moderate	24.31 \| fine	106.016 \| fine	7.841 \| good	5.331 \| good	29.154 \| good	0.579 \| good
2026-02-15T02:00:00.000Z	81 \| moderate	24.875 \| fine	108.828 \| fine	8.695 \| good	5.367 \| good	28.405 \| good	0.588 \| good
2026-02-15T03:00:00.000Z	79 \| moderate	24.191 \| fine	105.787 \| fine	10.262 \| good	5.403 \| good	27.655 \| good	0.596 \| good
2026-02-15T04:00:00.000Z	77 \| moderate	23.276 \| fine	101.874 \| fine	8.758 \| good	5.327 \| good	26.793 \| good	0.597 \| good
2026-02-15T05:00:00.000Z	77 \| moderate	22.948 \| fine	100.52 \| fine	6.128 \| good	5.25 \| good	25.93 \| good	0.599 \| good
2026-02-15T06:00:00.000Z	117 \| sensitive	41.966 \| moderate	42.467 \| good	1.312 \| good	5.196 \| good	25.142 \| good	0.602 \| good
2026-02-15T07:00:00.000Z	77 \| moderate	23.319 \| fine	101.866 \| fine	6.242 \| good	5.037 \| good	24.594 \| good	0.594 \| good

Westchester

Get reliable air quality data to drive your business

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

0.43ppm

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 05:00:00 on 2026-02-12.

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 06:00:00 on 2026-02-13.

What is the AQI in Westchester, Illinois right now?

As of now, the AQI in Westchester, Illinois is 52, 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 10.399 μg/m³.

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

The PM₁₀ concentration in Westchester, Illinois is 46.476 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 0.392 ppm.

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

Currently, Westchester, Illinois has a sulfur dioxide (SO₂) concentration of 0.901 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 8.041 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 32.755 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-02-11T08:00:00.000Z	44 \| good	8.142 \| good	25.83 \| good	18.022 \| good	0.848 \| good	2.309 \| good	0.153 \| good
2026-02-11T09:00:00.000Z	38 \| good	7.018 \| good	22.564 \| good	19.685 \| good	0.735 \| good	2.928 \| good	0.168 \| good
2026-02-11T10:00:00.000Z	33 \| good	6.2 \| good	20.401 \| good	21.335 \| good	0.765 \| good	5.234 \| good	0.168 \| good
2026-02-11T11:00:00.000Z	33 \| good	6.016 \| good	19.967 \| good	20.805 \| good	0.797 \| good	6.095 \| good	0.181 \| good
2026-02-11T12:00:00.000Z	38 \| good	6.579 \| good	29.059 \| good	19.366 \| good	1.622 \| good	11.471 \| good	0.2 \| good
2026-02-11T13:00:00.000Z	38 \| good	6.579 \| good	29.059 \| good	16.218 \| good	2.428 \| good	14.963 \| good	0.213 \| good
2026-02-11T14:00:00.000Z	49 \| good	9.186 \| good	41.114 \| good	14.702 \| good	2.657 \| good	18.844 \| good	0.283 \| good
2026-02-11T15:00:00.000Z	52 \| moderate	9.873 \| good	43.566 \| good	16.368 \| good	2.209 \| good	15.965 \| good	0.246 \| good
2026-02-11T16:00:00.000Z	52 \| moderate	9.939 \| good	44.469 \| good	17.625 \| good	2.393 \| good	12.934 \| good	0.213 \| good
2026-02-11T17:00:00.000Z	49 \| good	9.127 \| good	40.557 \| good	17.907 \| good	3.189 \| good	11.427 \| good	0.2 \| good
2026-02-11T18:00:00.000Z	49 \| good	8.574 \| good	38.528 \| good	18.872 \| good	1.902 \| good	9.733 \| good	0.2 \| good
2026-02-11T19:00:00.000Z	44 \| good	8.006 \| good	35.709 \| good	22.221 \| good	1.184 \| good	7.567 \| good	0.2 \| good
2026-02-11T20:00:00.000Z	38 \| good	7.301 \| good	32.552 \| good	22.726 \| good	1.381 \| good	7.066 \| good	0.2 \| good
2026-02-11T21:00:00.000Z	33 \| good	6.446 \| good	28.751 \| good	27.024 \| good	1.246 \| good	6.671 \| good	0.18 \| good
2026-02-11T22:00:00.000Z	33 \| good	5.624 \| good	24.58 \| good	29.349 \| good	1.057 \| good	5.332 \| good	0.213 \| good
2026-02-11T23:00:00.000Z	28 \| good	5.142 \| good	22.702 \| good	29.742 \| good	0.961 \| good	3.853 \| good	0.213 \| good
2026-02-12T00:00:00.000Z	27 \| good	5.005 \| good	21.927 \| good	27.064 \| good	0.85 \| good	4.044 \| good	0.291 \| good
2026-02-12T01:00:00.000Z	33 \| good	5.769 \| good	25.785 \| good	25.208 \| good	0.739 \| good	13.844 \| good	0.252 \| good
2026-02-12T02:00:00.000Z	38 \| good	7.277 \| good	32.164 \| good	22.136 \| good	0.778 \| good	19.431 \| good	0.239 \| good
2026-02-12T03:00:00.000Z	52 \| moderate	9.818 \| good	43.718 \| good	21.822 \| good	0.967 \| good	25.689 \| good	0.226 \| good
2026-02-12T04:00:00.000Z	54 \| moderate	10.801 \| good	47.752 \| good	15.165 \| good	0.895 \| good	23.274 \| good	0.241 \| good
2026-02-12T05:00:00.000Z	54 \| moderate	11.068 \| good	49.284 \| good	12.133 \| good	1.734 \| good	23.245 \| good	0.289 \| good
2026-02-12T06:00:00.000Z	54 \| moderate	11.457 \| good	51.222 \| good	8.908 \| good	1.354 \| good	21.391 \| good	0.269 \| good
2026-02-12T07:00:00.000Z	54 \| moderate	11.457 \| good	51.222 \| good	9.243 \| good	1.925 \| good	21.791 \| good	0.297 \| good
2026-02-12T08:00:00.000Z	54 \| moderate	11.126 \| good	39.9 \| good	5.993 \| good	2.048 \| good	22.41 \| good	0.291 \| good
2026-02-12T09:00:00.000Z	54 \| moderate	10.741 \| good	37.166 \| good	8.415 \| good	2.138 \| good	26.414 \| good	0.322 \| good
2026-02-12T10:00:00.000Z	54 \| moderate	10.601 \| good	36.47 \| good	7.237 \| good	2.196 \| good	27.171 \| good	0.306 \| good
2026-02-12T11:00:00.000Z	54 \| moderate	10.616 \| good	36.532 \| good	7.632 \| good	1.47 \| good	24.88 \| good	0.305 \| good
2026-02-12T12:00:00.000Z	54 \| moderate	10.68 \| good	47.773 \| good	5.616 \| good	1.315 \| good	24.831 \| good	0.378 \| good
2026-02-12T13:00:00.000Z	54 \| moderate	10.68 \| good	47.773 \| good	8.886 \| good	1.385 \| good	27.198 \| good	0.354 \| good
2026-02-12T14:00:00.000Z	54 \| moderate	11.034 \| good	49.653 \| good	7.009 \| good	1.344 \| good	29.468 \| good	0.463 \| good
2026-02-12T15:00:00.000Z	56 \| moderate	11.691 \| good	52.178 \| good	8.858 \| good	1.235 \| good	27.921 \| good	0.419 \| good
2026-02-12T16:00:00.000Z	58 \| moderate	12.577 \| fine	56.272 \| fine	14.56 \| good	1.231 \| good	22.206 \| good	0.258 \| good
2026-02-12T17:00:00.000Z	58 \| moderate	13.224 \| fine	59.521 \| fine	15.088 \| good	1.097 \| good	13.494 \| good	0.187 \| good
2026-02-12T18:00:00.000Z	56 \| moderate	12.289 \| fine	55.331 \| fine	17.634 \| good	1.084 \| good	12.731 \| good	0.174 \| good
2026-02-12T19:00:00.000Z	54 \| moderate	11.481 \| good	51.528 \| good	20.124 \| good	1.575 \| good	8.757 \| good	0.148 \| good
2026-02-12T20:00:00.000Z	54 \| moderate	10.998 \| good	49.472 \| good	27.695 \| good	1.027 \| good	9.57 \| good	0.148 \| good
2026-02-12T21:00:00.000Z	54 \| moderate	11.281 \| good	50.686 \| good	32.111 \| good	1.054 \| good	7.232 \| good	0.148 \| good
2026-02-12T22:00:00.000Z	54 \| moderate	11.045 \| good	49.217 \| good	32.655 \| good	1.233 \| good	12.897 \| good	0.147 \| good
2026-02-12T23:00:00.000Z	54 \| moderate	11.313 \| good	51.187 \| good	27.303 \| good	1.953 \| good	14.292 \| good	0.161 \| good
2026-02-13T00:00:00.000Z	56 \| moderate	11.648 \| good	52.147 \| good	28.175 \| good	1.505 \| good	17.059 \| good	0.161 \| good
2026-02-13T01:00:00.000Z	56 \| moderate	11.848 \| good	53.44 \| good	17.263 \| good	0.782 \| good	25.805 \| good	0.24 \| good
2026-02-13T02:00:00.000Z	56 \| moderate	12.297 \| fine	55.642 \| fine	16.153 \| good	0.701 \| good	31.34 \| good	0.242 \| good
2026-02-13T03:00:00.000Z	56 \| moderate	12.064 \| good	54.431 \| good	14.475 \| good	0.727 \| good	32.92 \| good	0.274 \| good
2026-02-13T04:00:00.000Z	56 \| moderate	11.796 \| good	53.37 \| good	13.433 \| good	0.741 \| good	32.508 \| good	0.287 \| good
2026-02-13T05:00:00.000Z	54 \| moderate	11.157 \| good	50.359 \| good	12.38 \| good	0.7 \| good	33.944 \| good	0.318 \| good
2026-02-13T06:00:00.000Z	54 \| moderate	11.157 \| good	50.359 \| good	11.34 \| good	0.725 \| good	34.669 \| good	0.407 \| good
2026-02-13T07:00:00.000Z	52 \| moderate	10.399 \| good	46.476 \| good	8.041 \| good	0.901 \| good	32.755 \| good	0.392 \| good
2026-02-13T07:00:00.000Z	52 \| moderate	10.399 \| good	46.476 \| good	8.041 \| good	0.901 \| good	32.755 \| good	0.392 \| good
2026-02-13T08:00:00.000Z	82 \| moderate	26.009 \| fine	113.043 \| fine	0.17 \| good	2.961 \| good	28.234 \| good	0.346 \| good
2026-02-13T09:00:00.000Z	79 \| moderate	24.369 \| fine	106.4 \| fine	0.283 \| good	3.017 \| good	27.306 \| good	0.348 \| good
2026-02-13T10:00:00.000Z	79 \| moderate	23.914 \| fine	104.103 \| fine	0.578 \| good	2.967 \| good	24.98 \| good	0.336 \| good
2026-02-13T11:00:00.000Z	79 \| moderate	23.542 \| fine	102.558 \| fine	0.486 \| good	2.918 \| good	22.654 \| good	0.324 \| good
2026-02-13T12:00:00.000Z	79 \| moderate	23.815 \| fine	103.829 \| fine	0.489 \| good	2.869 \| good	20.328 \| good	0.312 \| good
2026-02-13T13:00:00.000Z	77 \| moderate	23.3 \| fine	101.922 \| fine	1.093 \| good	3.576 \| good	18.061 \| good	0.314 \| good
2026-02-13T14:00:00.000Z	73 \| moderate	21.087 \| fine	92.685 \| fine	6.249 \| good	4.283 \| good	15.794 \| good	0.316 \| good
2026-02-13T15:00:00.000Z	69 \| moderate	19.064 \| fine	83.897 \| fine	16.285 \| good	4.99 \| good	13.527 \| good	0.319 \| good
2026-02-13T16:00:00.000Z	66 \| moderate	16.929 \| fine	74.948 \| fine	22.305 \| good	5.205 \| good	11.271 \| good	0.292 \| good
2026-02-13T17:00:00.000Z	62 \| moderate	14.515 \| fine	64.693 \| fine	27.956 \| good	5.42 \| good	9.014 \| good	0.265 \| good
2026-02-13T18:00:00.000Z	56 \| moderate	11.691 \| good	51.494 \| good	31.352 \| good	5.635 \| good	6.758 \| good	0.238 \| good
2026-02-13T19:00:00.000Z	49 \| good	9.384 \| good	41.769 \| good	33.061 \| good	4.94 \| good	6.716 \| good	0.232 \| good
2026-02-13T20:00:00.000Z	49 \| good	9.191 \| good	41.049 \| good	34.426 \| good	4.244 \| good	6.675 \| good	0.227 \| good
2026-02-13T21:00:00.000Z	52 \| moderate	10.233 \| good	45.225 \| good	30.717 \| good	3.549 \| good	6.633 \| good	0.221 \| good
2026-02-13T22:00:00.000Z	62 \| moderate	14.562 \| fine	64.984 \| fine	23.108 \| good	3.276 \| good	12.056 \| good	0.25 \| good
2026-02-13T23:00:00.000Z	62 \| moderate	15.257 \| fine	68.242 \| fine	10.475 \| good	3.004 \| good	17.478 \| good	0.279 \| good
2026-02-14T00:00:00.000Z	71 \| moderate	20.103 \| fine	88.865 \| fine	7.634 \| good	2.731 \| good	22.901 \| good	0.308 \| good
2026-02-14T01:00:00.000Z	75 \| moderate	21.627 \| fine	95.283 \| fine	5.776 \| good	2.608 \| good	23.364 \| good	0.311 \| good
2026-02-14T02:00:00.000Z	81 \| moderate	24.929 \| fine	108.392 \| fine	4.066 \| good	2.486 \| good	23.828 \| good	0.313 \| good
2026-02-14T03:00:00.000Z	82 \| moderate	25.599 \| fine	111.56 \| fine	2.832 \| good	2.363 \| good	24.291 \| good	0.316 \| good
2026-02-14T04:00:00.000Z	82 \| moderate	25.541 \| fine	110.992 \| fine	0.435 \| good	2.203 \| good	23.67 \| good	0.316 \| good
2026-02-14T05:00:00.000Z	79 \| moderate	24.122 \| fine	105.278 \| fine	1.042 \| good	2.044 \| good	23.048 \| good	0.316 \| good
2026-02-14T06:00:00.000Z	79 \| moderate	23.648 \| fine	103.724 \| fine	2.087 \| good	1.885 \| good	22.427 \| good	0.317 \| good
2026-02-14T07:00:00.000Z	81 \| moderate	25.057 \| fine	109.676 \| fine	0.997 \| good	1.836 \| good	21.755 \| good	0.312 \| good
2026-02-14T08:00:00.000Z	82 \| moderate	26.333 \| fine	114.289 \| fine	0.651 \| good	1.787 \| good	21.083 \| good	0.308 \| good
2026-02-14T09:00:00.000Z	86 \| moderate	27.502 \| fine	119.453 \| fine	0.628 \| good	1.738 \| good	20.412 \| good	0.303 \| good
2026-02-14T10:00:00.000Z	86 \| moderate	28.455 \| fine	124.006 \| fine	0.443 \| good	1.899 \| good	20.383 \| good	0.314 \| good
2026-02-14T11:00:00.000Z	88 \| moderate	29.464 \| fine	127.831 \| fine	0.269 \| good	2.06 \| good	20.353 \| good	0.325 \| good
2026-02-14T12:00:00.000Z	105 \| sensitive	37.467 \| moderate	163.964 \| moderate	0.113 \| good	2.221 \| good	20.324 \| good	0.337 \| good
2026-02-14T13:00:00.000Z	98 \| moderate	34.379 \| fine	148.567 \| fine	0.506 \| good	2.676 \| good	19.85 \| good	0.39 \| good
2026-02-14T14:00:00.000Z	102 \| sensitive	35.62 \| moderate	154.894 \| fine	1.917 \| good	3.13 \| good	19.377 \| good	0.444 \| good
2026-02-14T15:00:00.000Z	99 \| moderate	34.765 \| fine	150.939 \| fine	8.314 \| good	3.584 \| good	18.903 \| good	0.498 \| good
2026-02-14T16:00:00.000Z	94 \| moderate	32.097 \| fine	138.875 \| fine	16.928 \| good	4.038 \| good	18.552 \| good	0.449 \| good
2026-02-14T17:00:00.000Z	84 \| moderate	27.407 \| fine	118.559 \| fine	22.793 \| good	4.491 \| good	18.201 \| good	0.4 \| good
2026-02-14T18:00:00.000Z	77 \| moderate	22.668 \| fine	99.231 \| fine	26.824 \| good	4.945 \| good	17.851 \| good	0.351 \| good
2026-02-14T19:00:00.000Z	69 \| moderate	19.148 \| fine	84.693 \| fine	29.353 \| good	5.11 \| good	18.749 \| good	0.348 \| good
2026-02-14T20:00:00.000Z	67 \| moderate	17.678 \| fine	77.953 \| fine	32.254 \| good	5.275 \| good	19.648 \| good	0.345 \| good
2026-02-14T21:00:00.000Z	67 \| moderate	17.887 \| fine	79.556 \| fine	29.212 \| good	5.441 \| good	20.546 \| good	0.342 \| good
2026-02-14T22:00:00.000Z	77 \| moderate	23.19 \| fine	101.68 \| fine	19.65 \| good	5.392 \| good	23.665 \| good	0.418 \| good
2026-02-14T23:00:00.000Z	71 \| moderate	20.335 \| fine	89.412 \| fine	11.606 \| good	5.343 \| good	26.785 \| good	0.495 \| good
2026-02-15T00:00:00.000Z	77 \| moderate	22.889 \| fine	99.949 \| fine	9.193 \| good	5.295 \| good	29.904 \| good	0.571 \| good
2026-02-15T01:00:00.000Z	79 \| moderate	24.31 \| fine	106.016 \| fine	7.841 \| good	5.331 \| good	29.154 \| good	0.579 \| good
2026-02-15T02:00:00.000Z	81 \| moderate	24.875 \| fine	108.828 \| fine	8.695 \| good	5.367 \| good	28.405 \| good	0.588 \| good
2026-02-15T03:00:00.000Z	79 \| moderate	24.191 \| fine	105.787 \| fine	10.262 \| good	5.403 \| good	27.655 \| good	0.596 \| good
2026-02-15T04:00:00.000Z	77 \| moderate	23.276 \| fine	101.874 \| fine	8.758 \| good	5.327 \| good	26.793 \| good	0.597 \| good
2026-02-15T05:00:00.000Z	77 \| moderate	22.948 \| fine	100.52 \| fine	6.128 \| good	5.25 \| good	25.93 \| good	0.599 \| good
2026-02-15T06:00:00.000Z	117 \| sensitive	41.966 \| moderate	42.467 \| good	1.312 \| good	5.196 \| good	25.142 \| good	0.602 \| good
2026-02-15T07:00:00.000Z	77 \| moderate	23.319 \| fine	101.866 \| fine	6.242 \| good	5.037 \| good	24.594 \| good	0.594 \| 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)