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

Currently, Chicago Heights, Illinois has a sulfur dioxide (SO2) concentration of 0.339 ppb.

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

The current ozone (O3) level in Chicago Heights, Illinois at the moment is 17.279 ppm.

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

Nitrogen dioxide (NO2) level in Chicago Heights, Illinois at the moment is 3.299 ppb.

Live air quality index in Chicago Heights, Illinois today

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

PM2.5 levels in Chicago Heights, Illinois are currently 2.479 μg/m3.

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

The PM10 concentration in Chicago Heights, Illinois is 10.206 μg/m3 at the moment.

Stay updated with real-time air quality in Chicago Heights, 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

Chicago Heights, Illinois

Last updated: ... (Local time)

Major air pollutants in Chicago Heights, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.86 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

43.82 μg/m³

155

255

425

605+

Ozone (O₃)

12.20 ppb

201

201+

Sulfur Dioxide (SO₂)

1.92 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

20.21 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Chicago Heights, Illinois

Get Live Pollen Counts

Chicago Heights, Illinois

Scroll To Air Quality Map

Track live Chicago Heights, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-23T05:00:00.000Z	17 \| good	1.964 \| good	8.014 \| good	17.566 \| good	1.081 \| good	10.873 \| good	0.315 \| good
2025-10-23T06:00:00.000Z	11 \| good	1.518 \| good	6.352 \| good	11.207 \| good	0.714 \| good	11.149 \| good	0.278 \| good
2025-10-23T07:00:00.000Z	12 \| good	1.676 \| good	6.515 \| good	12.144 \| good	0.61 \| good	13.097 \| good	0.26 \| good
2025-10-23T08:00:00.000Z	11 \| good	1.819 \| good	6.685 \| good	12.265 \| good	0.913 \| good	12.057 \| good	0.241 \| good
2025-10-23T09:00:00.000Z	11 \| good	2.08 \| good	8.317 \| good	11.15 \| good	0.642 \| good	9.936 \| good	0.204 \| good
2025-10-23T10:00:00.000Z	11 \| good	2.35 \| good	7.359 \| good	8.226 \| good	0.534 \| good	10.202 \| good	0.222 \| good
2025-10-23T11:00:00.000Z	16 \| good	2.873 \| good	10.405 \| good	4.419 \| good	0.547 \| good	10.906 \| good	0.271 \| good
2025-10-23T12:00:00.000Z	16 \| good	2.71 \| good	11.126 \| good	3.074 \| good	0.603 \| good	10.47 \| good	0.308 \| good
2025-10-23T13:00:00.000Z	16 \| good	3.353 \| good	14.73 \| good	2.737 \| good	0.665 \| good	11.31 \| good	0.327 \| good
2025-10-23T14:00:00.000Z	22 \| good	4.142 \| good	16.998 \| good	4.047 \| good	0.719 \| good	11.627 \| good	0.394 \| good
2025-10-23T15:00:00.000Z	22 \| good	4.001 \| good	17.262 \| good	5.987 \| good	0.702 \| good	9.375 \| good	0.305 \| good
2025-10-23T16:00:00.000Z	22 \| good	3.838 \| good	16.323 \| good	9.768 \| good	1.351 \| good	8.724 \| good	0.254 \| good
2025-10-23T17:00:00.000Z	22 \| good	3.866 \| good	14.279 \| good	12.306 \| good	1.155 \| good	6.259 \| good	0.237 \| good
2025-10-23T18:00:00.000Z	16 \| good	3.227 \| good	9.805 \| good	14.295 \| good	0.849 \| good	5.262 \| good	0.227 \| good
2025-10-23T19:00:00.000Z	16 \| good	3.031 \| good	12.601 \| good	16.502 \| good	0.959 \| good	4.824 \| good	0.254 \| good
2025-10-23T20:00:00.000Z	17 \| good	2.84 \| good	11.706 \| good	18.283 \| good	0.869 \| good	4.703 \| good	0.281 \| good
2025-10-23T21:00:00.000Z	19 \| good	2.661 \| good	9.597 \| good	20.193 \| good	0.845 \| good	3.941 \| good	0.281 \| good
2025-10-23T22:00:00.000Z	20 \| good	2.514 \| good	10.266 \| good	22.342 \| good	0.814 \| good	2.808 \| good	0.281 \| good
2025-10-23T23:00:00.000Z	21 \| good	2.159 \| good	8.998 \| good	22.983 \| good	0.681 \| good	2.65 \| good	0.281 \| good
2025-10-24T00:00:00.000Z	21 \| good	2.331 \| good	9.154 \| good	22.683 \| good	0.788 \| good	8.744 \| good	0.271 \| good
2025-10-24T01:00:00.000Z	20 \| good	2.67 \| good	11.014 \| good	21.9 \| good	1.306 \| good	10.531 \| good	0.288 \| good
2025-10-24T02:00:00.000Z	17 \| good	3.123 \| good	15.727 \| good	17.971 \| good	0.929 \| good	15.267 \| good	0.332 \| good
2025-10-24T03:00:00.000Z	52 \| moderate	10.211 \| good	45.343 \| good	0.292 \| good	1.506 \| good	16.85 \| good	0.199 \| good
2025-10-24T04:00:00.000Z	22 \| good	4.235 \| good	19.292 \| good	9.399 \| good	1.192 \| good	20.812 \| good	0.328 \| good
2025-10-24T05:00:00.000Z	52 \| moderate	4.094 \| good	57.47 \| fine	5.107 \| good	0.923 \| good	15.421 \| good	0.361 \| good
2025-10-24T06:00:00.000Z	22 \| good	4.328 \| good	21.812 \| good	2.791 \| good	1.184 \| good	15.279 \| good	0.378 \| good
2025-10-24T07:00:00.000Z	27 \| good	4.793 \| good	28.72 \| good	6.819 \| good	1.274 \| good	15.551 \| good	0.395 \| good
2025-10-24T08:00:00.000Z	27 \| good	4.768 \| good	22.472 \| good	5.118 \| good	1.232 \| good	14.981 \| good	0.361 \| good
2025-10-24T09:00:00.000Z	27 \| good	5.263 \| good	23.213 \| good	4.999 \| good	0.889 \| good	13.968 \| good	0.362 \| good
2025-10-24T10:00:00.000Z	27 \| good	5.406 \| good	25.853 \| good	4.582 \| good	1.067 \| good	17.125 \| good	0.372 \| good
2025-10-24T11:00:00.000Z	27 \| good	4.822 \| good	22.742 \| good	4.096 \| good	1.024 \| good	15.521 \| good	0.367 \| good
2025-10-24T12:00:00.000Z	27 \| good	5.113 \| good	21.515 \| good	2.935 \| good	0.982 \| good	15.762 \| good	0.426 \| good
2025-10-24T13:00:00.000Z	27 \| good	5.204 \| good	20.915 \| good	1.779 \| good	0.86 \| good	15.71 \| good	0.459 \| good
2025-10-24T14:00:00.000Z	33 \| good	5.969 \| good	26.457 \| good	1.514 \| good	1.005 \| good	17.457 \| good	0.602 \| good
2025-10-24T15:00:00.000Z	27 \| good	5.476 \| good	24.06 \| good	3.425 \| good	1.22 \| good	17.373 \| good	0.476 \| good
2025-10-24T16:00:00.000Z	27 \| good	5.369 \| good	21.659 \| good	5.216 \| good	2.622 \| good	15.553 \| good	0.186 \| good
2025-10-24T17:00:00.000Z	27 \| good	4.56 \| good	17.982 \| good	9.601 \| good	1.001 \| good	8.11 \| good	0.187 \| good
2025-10-24T18:00:00.000Z	27 \| good	4.598 \| good	19.714 \| good	12.696 \| good	0.732 \| good	3.53 \| good	0.254 \| good
2025-10-24T19:00:00.000Z	22 \| good	3.78 \| good	20.476 \| good	16.634 \| good	0.771 \| good	4.661 \| good	0.271 \| good
2025-10-24T20:00:00.000Z	22 \| good	3.523 \| good	15.584 \| good	17.432 \| good	0.674 \| good	5.305 \| good	0.271 \| good
2025-10-24T21:00:00.000Z	22 \| good	3.539 \| good	15.383 \| good	19.779 \| good	0.829 \| good	4.499 \| good	0.271 \| good
2025-10-24T22:00:00.000Z	22 \| good	4.025 \| good	20.739 \| good	20.227 \| good	1.171 \| good	7.453 \| good	0.244 \| good
2025-10-24T23:00:00.000Z	22 \| good	3.619 \| good	15.65 \| good	24.061 \| good	2.661 \| good	12.332 \| good	0.244 \| good
2025-10-25T00:00:00.000Z	22 \| good	4.368 \| good	19.984 \| good	19.609 \| good	2.466 \| good	12.389 \| good	0.277 \| good
2025-10-25T01:00:00.000Z	27 \| good	4.58 \| good	21.464 \| good	14.897 \| good	0.76 \| good	20.003 \| good	0.388 \| good
2025-10-25T02:00:00.000Z	33 \| good	6.214 \| good	29.187 \| good	13.204 \| good	0.716 \| good	17.917 \| good	0.431 \| good
2025-10-25T03:00:00.000Z	56 \| moderate	11.652 \| good	52.198 \| good	8.747 \| good	1.82 \| good	20.875 \| good	0.236 \| good
2025-10-25T04:00:00.000Z	52 \| moderate	9.856 \| good	43.818 \| good	12.197 \| good	1.917 \| good	20.209 \| good	0.237 \| good
2025-10-22T23:00:00.000Z	17 \| good	2.71 \| good	11.062 \| good	17.58 \| good	0.691 \| good	4.882 \| good	0.143 \| good
2025-10-23T00:00:00.000Z	16 \| good	0.625 \| good	2.122 \| good	16.554 \| good	0.8 \| good	5.991 \| good	0.149 \| good
2025-10-23T01:00:00.000Z	13 \| good	1.05 \| good	3.981 \| good	13.643 \| good	0.81 \| good	5.877 \| good	0.147 \| good
2025-10-23T02:00:00.000Z	11 \| good	1.796 \| good	7.756 \| good	11.578 \| good	0.819 \| good	5.763 \| good	0.145 \| good
2025-10-23T03:00:00.000Z	11 \| good	1.995 \| good	8.071 \| good	10.143 \| good	0.828 \| good	5.649 \| good	0.143 \| good
2025-10-23T04:00:00.000Z	11 \| good	2.125 \| good	8.89 \| good	10.768 \| good	0.81 \| good	5.284 \| good	0.141 \| good
2025-10-23T05:00:00.000Z	10 \| good	1.43 \| good	5.928 \| good	10.899 \| good	0.791 \| good	4.919 \| good	0.14 \| good
2025-10-23T06:00:00.000Z	11 \| good	0.917 \| good	3.886 \| good	11.645 \| good	0.772 \| good	4.554 \| good	0.138 \| good
2025-10-23T07:00:00.000Z	12 \| good	0.64 \| good	2.189 \| good	12.608 \| good	0.799 \| good	4.51 \| good	0.137 \| good
2025-10-23T08:00:00.000Z	13 \| good	0.545 \| good	2.013 \| good	14.441 \| good	0.827 \| good	4.466 \| good	0.136 \| good
2025-10-23T09:00:00.000Z	12 \| good	0.193 \| good	0.206 \| good	12.959 \| good	0.854 \| good	4.423 \| good	0.135 \| good
2025-10-23T10:00:00.000Z	10 \| good	0.687 \| good	2.169 \| good	10.523 \| good	0.924 \| good	5.188 \| good	0.139 \| good
2025-10-23T11:00:00.000Z	6 \| good	0.855 \| good	3.155 \| good	5.451 \| good	0.994 \| good	5.953 \| good	0.143 \| good
2025-10-23T12:00:00.000Z	7 \| good	1.169 \| good	4.957 \| good	2.861 \| good	1.064 \| good	6.718 \| good	0.147 \| good
2025-10-23T13:00:00.000Z	11 \| good	1.866 \| good	7.938 \| good	7.716 \| good	1.159 \| good	6.181 \| good	0.151 \| good
2025-10-23T14:00:00.000Z	12 \| good	2.22 \| good	9.048 \| good	12.575 \| good	1.254 \| good	5.644 \| good	0.155 \| good
2025-10-23T15:00:00.000Z	19 \| good	2.043 \| good	8.137 \| good	20.287 \| good	1.349 \| good	5.107 \| good	0.159 \| good
2025-10-23T16:00:00.000Z	21 \| good	2.116 \| good	8.98 \| good	22.998 \| good	1.169 \| good	4.332 \| good	0.149 \| good
2025-10-23T17:00:00.000Z	23 \| good	1.936 \| good	8.032 \| good	25.027 \| good	0.989 \| good	3.557 \| good	0.139 \| good
2025-10-23T18:00:00.000Z	24 \| good	1.825 \| good	7.89 \| good	25.879 \| good	0.808 \| good	2.783 \| good	0.129 \| good
2025-10-23T19:00:00.000Z	25 \| good	2.018 \| good	8.091 \| good	27.151 \| good	0.771 \| good	2.744 \| good	0.127 \| good
2025-10-23T20:00:00.000Z	27 \| good	1.702 \| good	7.067 \| good	29.125 \| good	0.735 \| good	2.705 \| good	0.126 \| good
2025-10-23T21:00:00.000Z	25 \| good	2.263 \| good	9.072 \| good	27.396 \| good	0.698 \| good	2.666 \| good	0.125 \| good
2025-10-23T22:00:00.000Z	22 \| good	3.585 \| good	15.899 \| good	23.594 \| good	0.81 \| good	5.34 \| good	0.142 \| good
2025-10-23T23:00:00.000Z	33 \| good	6.329 \| good	28.029 \| good	15.922 \| good	0.923 \| good	8.014 \| good	0.158 \| good
2025-10-24T00:00:00.000Z	33 \| good	6.191 \| good	27.226 \| good	10.931 \| good	1.036 \| good	10.687 \| good	0.175 \| good
2025-10-24T01:00:00.000Z	22 \| good	3.638 \| good	16.142 \| good	6.206 \| good	1.157 \| good	12.203 \| good	0.181 \| good
2025-10-24T02:00:00.000Z	22 \| good	4.09 \| good	18.02 \| good	1.385 \| good	1.278 \| good	13.718 \| good	0.187 \| good
2025-10-24T03:00:00.000Z	22 \| good	4.326 \| good	19.059 \| good	0.288 \| good	1.399 \| good	15.233 \| good	0.194 \| good
2025-10-24T04:00:00.000Z	22 \| good	4.205 \| good	18.8 \| good	0.287 \| good	1.414 \| good	15.017 \| good	0.193 \| good
2025-10-24T05:00:00.000Z	22 \| good	4.302 \| good	18.87 \| good	0.484 \| good	1.429 \| good	14.8 \| good	0.193 \| good
2025-10-24T06:00:00.000Z	27 \| good	4.736 \| good	20.87 \| good	0.872 \| good	1.444 \| good	14.584 \| good	0.192 \| good
2025-10-24T07:00:00.000Z	27 \| good	4.745 \| good	20.875 \| good	0.967 \| good	1.437 \| good	13.753 \| good	0.187 \| good
2025-10-24T08:00:00.000Z	27 \| good	5.076 \| good	21.965 \| good	0.777 \| good	1.429 \| good	12.921 \| good	0.182 \| good
2025-10-24T09:00:00.000Z	27 \| good	5.352 \| good	23.014 \| good	1.468 \| good	1.422 \| good	12.09 \| good	0.177 \| good
2025-10-24T10:00:00.000Z	27 \| good	5.453 \| good	23.288 \| good	1.791 \| good	1.46 \| good	12.891 \| good	0.182 \| good
2025-10-24T11:00:00.000Z	38 \| good	7.152 \| good	31.959 \| good	1.271 \| good	1.497 \| good	13.693 \| good	0.187 \| good
2025-10-24T12:00:00.000Z	52 \| moderate	9.527 \| good	42.132 \| good	0.557 \| good	1.534 \| good	14.494 \| good	0.192 \| good
2025-10-24T13:00:00.000Z	49 \| good	9.336 \| good	41.887 \| good	2.701 \| good	1.764 \| good	12.748 \| good	0.198 \| good
2025-10-24T14:00:00.000Z	33 \| good	6.246 \| good	27.961 \| good	9.791 \| good	1.994 \| good	11.002 \| good	0.205 \| good
2025-10-24T15:00:00.000Z	27 \| good	5.188 \| good	22.071 \| good	15.418 \| good	2.224 \| good	9.255 \| good	0.212 \| good
2025-10-24T16:00:00.000Z	33 \| good	5.681 \| good	24.181 \| good	19.958 \| good	2.067 \| good	7.452 \| good	0.19 \| good
2025-10-24T17:00:00.000Z	33 \| good	6.33 \| good	28.052 \| good	23.427 \| good	1.91 \| good	5.648 \| good	0.168 \| good
2025-10-24T18:00:00.000Z	38 \| good	6.682 \| good	29.934 \| good	26.447 \| good	1.752 \| good	3.844 \| good	0.147 \| good
2025-10-24T19:00:00.000Z	44 \| good	7.582 \| good	33.203 \| good	28.15 \| good	1.867 \| good	4.35 \| good	0.15 \| good
2025-10-24T20:00:00.000Z	44 \| good	8.37 \| good	36.948 \| good	28.28 \| good	1.983 \| good	4.856 \| good	0.153 \| good
2025-10-24T21:00:00.000Z	49 \| good	8.707 \| good	38.045 \| good	26.987 \| good	2.098 \| good	5.363 \| good	0.156 \| good
2025-10-24T22:00:00.000Z	56 \| moderate	12.075 \| good	54.114 \| good	19.077 \| good	2.25 \| good	11.798 \| good	0.214 \| good

Chicago Heights

Get reliable air quality data to drive your business

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

0.27ppm

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 Chicago Heights, Illinois?

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

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

In the past 24 hours, the air quality in Chicago Heights, Illinois was at its worst at 03:00:00 on 2025-10-22.

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

In the last 24 hours, the best air quality in Chicago Heights, Illinois was observed at 08:00:00 on 2025-10-22.

What is the AQI in Chicago Heights, Illinois right now?

As of now, the AQI in Chicago Heights, Illinois is 16, indicating Good conditions.

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

Chicago Heights, Illinois air has the highest levels of O3.

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

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

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

PM_2.5 levels in Chicago Heights, Illinois are currently 2.479 μg/m³.

What is the PM₁₀ level in Chicago Heights, Illinois at the moment?

The PM₁₀ concentration in Chicago Heights, Illinois is 10.206 μg/m³ at the moment.

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

The current carbon monoxide (CO) concentration in Chicago Heights, Illinois is 0.271 ppm.

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

Currently, Chicago Heights, Illinois has a sulfur dioxide (SO₂) concentration of 0.339 ppb.

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

The current ozone (O₃) level in Chicago Heights, Illinois at the moment is 17.279 ppm.

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

Nitrogen dioxide (NO₂) level in Chicago Heights, Illinois at the moment is 3.299 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-23T05:00:00.000Z	17 \| good	1.964 \| good	8.014 \| good	17.566 \| good	1.081 \| good	10.873 \| good	0.315 \| good
2025-10-23T06:00:00.000Z	11 \| good	1.518 \| good	6.352 \| good	11.207 \| good	0.714 \| good	11.149 \| good	0.278 \| good
2025-10-23T07:00:00.000Z	12 \| good	1.676 \| good	6.515 \| good	12.144 \| good	0.61 \| good	13.097 \| good	0.26 \| good
2025-10-23T08:00:00.000Z	11 \| good	1.819 \| good	6.685 \| good	12.265 \| good	0.913 \| good	12.057 \| good	0.241 \| good
2025-10-23T09:00:00.000Z	11 \| good	2.08 \| good	8.317 \| good	11.15 \| good	0.642 \| good	9.936 \| good	0.204 \| good
2025-10-23T10:00:00.000Z	11 \| good	2.35 \| good	7.359 \| good	8.226 \| good	0.534 \| good	10.202 \| good	0.222 \| good
2025-10-23T11:00:00.000Z	16 \| good	2.873 \| good	10.405 \| good	4.419 \| good	0.547 \| good	10.906 \| good	0.271 \| good
2025-10-23T12:00:00.000Z	16 \| good	2.71 \| good	11.126 \| good	3.074 \| good	0.603 \| good	10.47 \| good	0.308 \| good
2025-10-23T13:00:00.000Z	16 \| good	3.353 \| good	14.73 \| good	2.737 \| good	0.665 \| good	11.31 \| good	0.327 \| good
2025-10-23T14:00:00.000Z	22 \| good	4.142 \| good	16.998 \| good	4.047 \| good	0.719 \| good	11.627 \| good	0.394 \| good
2025-10-23T15:00:00.000Z	22 \| good	4.001 \| good	17.262 \| good	5.987 \| good	0.702 \| good	9.375 \| good	0.305 \| good
2025-10-23T16:00:00.000Z	22 \| good	3.838 \| good	16.323 \| good	9.768 \| good	1.351 \| good	8.724 \| good	0.254 \| good
2025-10-23T17:00:00.000Z	22 \| good	3.866 \| good	14.279 \| good	12.306 \| good	1.155 \| good	6.259 \| good	0.237 \| good
2025-10-23T18:00:00.000Z	16 \| good	3.227 \| good	9.805 \| good	14.295 \| good	0.849 \| good	5.262 \| good	0.227 \| good
2025-10-23T19:00:00.000Z	16 \| good	3.031 \| good	12.601 \| good	16.502 \| good	0.959 \| good	4.824 \| good	0.254 \| good
2025-10-23T20:00:00.000Z	17 \| good	2.84 \| good	11.706 \| good	18.283 \| good	0.869 \| good	4.703 \| good	0.281 \| good
2025-10-23T21:00:00.000Z	19 \| good	2.661 \| good	9.597 \| good	20.193 \| good	0.845 \| good	3.941 \| good	0.281 \| good
2025-10-23T22:00:00.000Z	20 \| good	2.514 \| good	10.266 \| good	22.342 \| good	0.814 \| good	2.808 \| good	0.281 \| good
2025-10-23T23:00:00.000Z	21 \| good	2.159 \| good	8.998 \| good	22.983 \| good	0.681 \| good	2.65 \| good	0.281 \| good
2025-10-24T00:00:00.000Z	21 \| good	2.331 \| good	9.154 \| good	22.683 \| good	0.788 \| good	8.744 \| good	0.271 \| good
2025-10-24T01:00:00.000Z	20 \| good	2.67 \| good	11.014 \| good	21.9 \| good	1.306 \| good	10.531 \| good	0.288 \| good
2025-10-24T02:00:00.000Z	17 \| good	3.123 \| good	15.727 \| good	17.971 \| good	0.929 \| good	15.267 \| good	0.332 \| good
2025-10-24T03:00:00.000Z	52 \| moderate	10.211 \| good	45.343 \| good	0.292 \| good	1.506 \| good	16.85 \| good	0.199 \| good
2025-10-24T04:00:00.000Z	22 \| good	4.235 \| good	19.292 \| good	9.399 \| good	1.192 \| good	20.812 \| good	0.328 \| good
2025-10-24T05:00:00.000Z	52 \| moderate	4.094 \| good	57.47 \| fine	5.107 \| good	0.923 \| good	15.421 \| good	0.361 \| good
2025-10-24T06:00:00.000Z	22 \| good	4.328 \| good	21.812 \| good	2.791 \| good	1.184 \| good	15.279 \| good	0.378 \| good
2025-10-24T07:00:00.000Z	27 \| good	4.793 \| good	28.72 \| good	6.819 \| good	1.274 \| good	15.551 \| good	0.395 \| good
2025-10-24T08:00:00.000Z	27 \| good	4.768 \| good	22.472 \| good	5.118 \| good	1.232 \| good	14.981 \| good	0.361 \| good
2025-10-24T09:00:00.000Z	27 \| good	5.263 \| good	23.213 \| good	4.999 \| good	0.889 \| good	13.968 \| good	0.362 \| good
2025-10-24T10:00:00.000Z	27 \| good	5.406 \| good	25.853 \| good	4.582 \| good	1.067 \| good	17.125 \| good	0.372 \| good
2025-10-24T11:00:00.000Z	27 \| good	4.822 \| good	22.742 \| good	4.096 \| good	1.024 \| good	15.521 \| good	0.367 \| good
2025-10-24T12:00:00.000Z	27 \| good	5.113 \| good	21.515 \| good	2.935 \| good	0.982 \| good	15.762 \| good	0.426 \| good
2025-10-24T13:00:00.000Z	27 \| good	5.204 \| good	20.915 \| good	1.779 \| good	0.86 \| good	15.71 \| good	0.459 \| good
2025-10-24T14:00:00.000Z	33 \| good	5.969 \| good	26.457 \| good	1.514 \| good	1.005 \| good	17.457 \| good	0.602 \| good
2025-10-24T15:00:00.000Z	27 \| good	5.476 \| good	24.06 \| good	3.425 \| good	1.22 \| good	17.373 \| good	0.476 \| good
2025-10-24T16:00:00.000Z	27 \| good	5.369 \| good	21.659 \| good	5.216 \| good	2.622 \| good	15.553 \| good	0.186 \| good
2025-10-24T17:00:00.000Z	27 \| good	4.56 \| good	17.982 \| good	9.601 \| good	1.001 \| good	8.11 \| good	0.187 \| good
2025-10-24T18:00:00.000Z	27 \| good	4.598 \| good	19.714 \| good	12.696 \| good	0.732 \| good	3.53 \| good	0.254 \| good
2025-10-24T19:00:00.000Z	22 \| good	3.78 \| good	20.476 \| good	16.634 \| good	0.771 \| good	4.661 \| good	0.271 \| good
2025-10-24T20:00:00.000Z	22 \| good	3.523 \| good	15.584 \| good	17.432 \| good	0.674 \| good	5.305 \| good	0.271 \| good
2025-10-24T21:00:00.000Z	22 \| good	3.539 \| good	15.383 \| good	19.779 \| good	0.829 \| good	4.499 \| good	0.271 \| good
2025-10-24T22:00:00.000Z	22 \| good	4.025 \| good	20.739 \| good	20.227 \| good	1.171 \| good	7.453 \| good	0.244 \| good
2025-10-24T23:00:00.000Z	22 \| good	3.619 \| good	15.65 \| good	24.061 \| good	2.661 \| good	12.332 \| good	0.244 \| good
2025-10-25T00:00:00.000Z	22 \| good	4.368 \| good	19.984 \| good	19.609 \| good	2.466 \| good	12.389 \| good	0.277 \| good
2025-10-25T01:00:00.000Z	27 \| good	4.58 \| good	21.464 \| good	14.897 \| good	0.76 \| good	20.003 \| good	0.388 \| good
2025-10-25T02:00:00.000Z	33 \| good	6.214 \| good	29.187 \| good	13.204 \| good	0.716 \| good	17.917 \| good	0.431 \| good
2025-10-25T03:00:00.000Z	56 \| moderate	11.652 \| good	52.198 \| good	8.747 \| good	1.82 \| good	20.875 \| good	0.236 \| good
2025-10-25T04:00:00.000Z	52 \| moderate	9.856 \| good	43.818 \| good	12.197 \| good	1.917 \| good	20.209 \| good	0.237 \| good
2025-10-22T23:00:00.000Z	17 \| good	2.71 \| good	11.062 \| good	17.58 \| good	0.691 \| good	4.882 \| good	0.143 \| good
2025-10-23T00:00:00.000Z	16 \| good	0.625 \| good	2.122 \| good	16.554 \| good	0.8 \| good	5.991 \| good	0.149 \| good
2025-10-23T01:00:00.000Z	13 \| good	1.05 \| good	3.981 \| good	13.643 \| good	0.81 \| good	5.877 \| good	0.147 \| good
2025-10-23T02:00:00.000Z	11 \| good	1.796 \| good	7.756 \| good	11.578 \| good	0.819 \| good	5.763 \| good	0.145 \| good
2025-10-23T03:00:00.000Z	11 \| good	1.995 \| good	8.071 \| good	10.143 \| good	0.828 \| good	5.649 \| good	0.143 \| good
2025-10-23T04:00:00.000Z	11 \| good	2.125 \| good	8.89 \| good	10.768 \| good	0.81 \| good	5.284 \| good	0.141 \| good
2025-10-23T05:00:00.000Z	10 \| good	1.43 \| good	5.928 \| good	10.899 \| good	0.791 \| good	4.919 \| good	0.14 \| good
2025-10-23T06:00:00.000Z	11 \| good	0.917 \| good	3.886 \| good	11.645 \| good	0.772 \| good	4.554 \| good	0.138 \| good
2025-10-23T07:00:00.000Z	12 \| good	0.64 \| good	2.189 \| good	12.608 \| good	0.799 \| good	4.51 \| good	0.137 \| good
2025-10-23T08:00:00.000Z	13 \| good	0.545 \| good	2.013 \| good	14.441 \| good	0.827 \| good	4.466 \| good	0.136 \| good
2025-10-23T09:00:00.000Z	12 \| good	0.193 \| good	0.206 \| good	12.959 \| good	0.854 \| good	4.423 \| good	0.135 \| good
2025-10-23T10:00:00.000Z	10 \| good	0.687 \| good	2.169 \| good	10.523 \| good	0.924 \| good	5.188 \| good	0.139 \| good
2025-10-23T11:00:00.000Z	6 \| good	0.855 \| good	3.155 \| good	5.451 \| good	0.994 \| good	5.953 \| good	0.143 \| good
2025-10-23T12:00:00.000Z	7 \| good	1.169 \| good	4.957 \| good	2.861 \| good	1.064 \| good	6.718 \| good	0.147 \| good
2025-10-23T13:00:00.000Z	11 \| good	1.866 \| good	7.938 \| good	7.716 \| good	1.159 \| good	6.181 \| good	0.151 \| good
2025-10-23T14:00:00.000Z	12 \| good	2.22 \| good	9.048 \| good	12.575 \| good	1.254 \| good	5.644 \| good	0.155 \| good
2025-10-23T15:00:00.000Z	19 \| good	2.043 \| good	8.137 \| good	20.287 \| good	1.349 \| good	5.107 \| good	0.159 \| good
2025-10-23T16:00:00.000Z	21 \| good	2.116 \| good	8.98 \| good	22.998 \| good	1.169 \| good	4.332 \| good	0.149 \| good
2025-10-23T17:00:00.000Z	23 \| good	1.936 \| good	8.032 \| good	25.027 \| good	0.989 \| good	3.557 \| good	0.139 \| good
2025-10-23T18:00:00.000Z	24 \| good	1.825 \| good	7.89 \| good	25.879 \| good	0.808 \| good	2.783 \| good	0.129 \| good
2025-10-23T19:00:00.000Z	25 \| good	2.018 \| good	8.091 \| good	27.151 \| good	0.771 \| good	2.744 \| good	0.127 \| good
2025-10-23T20:00:00.000Z	27 \| good	1.702 \| good	7.067 \| good	29.125 \| good	0.735 \| good	2.705 \| good	0.126 \| good
2025-10-23T21:00:00.000Z	25 \| good	2.263 \| good	9.072 \| good	27.396 \| good	0.698 \| good	2.666 \| good	0.125 \| good
2025-10-23T22:00:00.000Z	22 \| good	3.585 \| good	15.899 \| good	23.594 \| good	0.81 \| good	5.34 \| good	0.142 \| good
2025-10-23T23:00:00.000Z	33 \| good	6.329 \| good	28.029 \| good	15.922 \| good	0.923 \| good	8.014 \| good	0.158 \| good
2025-10-24T00:00:00.000Z	33 \| good	6.191 \| good	27.226 \| good	10.931 \| good	1.036 \| good	10.687 \| good	0.175 \| good
2025-10-24T01:00:00.000Z	22 \| good	3.638 \| good	16.142 \| good	6.206 \| good	1.157 \| good	12.203 \| good	0.181 \| good
2025-10-24T02:00:00.000Z	22 \| good	4.09 \| good	18.02 \| good	1.385 \| good	1.278 \| good	13.718 \| good	0.187 \| good
2025-10-24T03:00:00.000Z	22 \| good	4.326 \| good	19.059 \| good	0.288 \| good	1.399 \| good	15.233 \| good	0.194 \| good
2025-10-24T04:00:00.000Z	22 \| good	4.205 \| good	18.8 \| good	0.287 \| good	1.414 \| good	15.017 \| good	0.193 \| good
2025-10-24T05:00:00.000Z	22 \| good	4.302 \| good	18.87 \| good	0.484 \| good	1.429 \| good	14.8 \| good	0.193 \| good
2025-10-24T06:00:00.000Z	27 \| good	4.736 \| good	20.87 \| good	0.872 \| good	1.444 \| good	14.584 \| good	0.192 \| good
2025-10-24T07:00:00.000Z	27 \| good	4.745 \| good	20.875 \| good	0.967 \| good	1.437 \| good	13.753 \| good	0.187 \| good
2025-10-24T08:00:00.000Z	27 \| good	5.076 \| good	21.965 \| good	0.777 \| good	1.429 \| good	12.921 \| good	0.182 \| good
2025-10-24T09:00:00.000Z	27 \| good	5.352 \| good	23.014 \| good	1.468 \| good	1.422 \| good	12.09 \| good	0.177 \| good
2025-10-24T10:00:00.000Z	27 \| good	5.453 \| good	23.288 \| good	1.791 \| good	1.46 \| good	12.891 \| good	0.182 \| good
2025-10-24T11:00:00.000Z	38 \| good	7.152 \| good	31.959 \| good	1.271 \| good	1.497 \| good	13.693 \| good	0.187 \| good
2025-10-24T12:00:00.000Z	52 \| moderate	9.527 \| good	42.132 \| good	0.557 \| good	1.534 \| good	14.494 \| good	0.192 \| good
2025-10-24T13:00:00.000Z	49 \| good	9.336 \| good	41.887 \| good	2.701 \| good	1.764 \| good	12.748 \| good	0.198 \| good
2025-10-24T14:00:00.000Z	33 \| good	6.246 \| good	27.961 \| good	9.791 \| good	1.994 \| good	11.002 \| good	0.205 \| good
2025-10-24T15:00:00.000Z	27 \| good	5.188 \| good	22.071 \| good	15.418 \| good	2.224 \| good	9.255 \| good	0.212 \| good
2025-10-24T16:00:00.000Z	33 \| good	5.681 \| good	24.181 \| good	19.958 \| good	2.067 \| good	7.452 \| good	0.19 \| good
2025-10-24T17:00:00.000Z	33 \| good	6.33 \| good	28.052 \| good	23.427 \| good	1.91 \| good	5.648 \| good	0.168 \| good
2025-10-24T18:00:00.000Z	38 \| good	6.682 \| good	29.934 \| good	26.447 \| good	1.752 \| good	3.844 \| good	0.147 \| good
2025-10-24T19:00:00.000Z	44 \| good	7.582 \| good	33.203 \| good	28.15 \| good	1.867 \| good	4.35 \| good	0.15 \| good
2025-10-24T20:00:00.000Z	44 \| good	8.37 \| good	36.948 \| good	28.28 \| good	1.983 \| good	4.856 \| good	0.153 \| good
2025-10-24T21:00:00.000Z	49 \| good	8.707 \| good	38.045 \| good	26.987 \| good	2.098 \| good	5.363 \| good	0.156 \| good
2025-10-24T22:00:00.000Z	56 \| moderate	12.075 \| good	54.114 \| good	19.077 \| good	2.25 \| good	11.798 \| good	0.214 \| good

Live air quality index in Chicago Heights, Illinois today

Major air pollutants in Chicago Heights, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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

Air quality in nearby cities

Park Forest, Illinois

Richton Park, Illinois

Matteson, Illinois

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Hazel Crest, Illinois

Dyer, Indiana

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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