What is the PM10 level in St. Charles, Illinois at the moment?

The PM10 concentration in St. Charles, Illinois is 31.853 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in St. Charles, Illinois at the moment?

Currently, St. Charles, Illinois has a sulfur dioxide (SO2) concentration of 1.719 ppb.

What is the ozone (O3) level in St. Charles, Illinois at the moment?

The current ozone (O3) level in St. Charles, Illinois at the moment is 44.011 ppm.

What is the nitrogen dioxide (NO2) level in St. Charles, Illinois at the moment?

Nitrogen dioxide (NO2) level in St. Charles, Illinois at the moment is 4.543 ppb.

Live air quality index in St. Charles, Illinois today

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

PM2.5 levels in St. Charles, Illinois are currently 6.551 μg/m3.

Stay updated with real-time air quality in St. Charles, 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)

Good

St. Charles, Illinois

Last updated: ... (Local time)

Major air pollutants in St. Charles, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.55 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

31.85 μg/m³

155

255

425

605+

Ozone (O₃)

44.01 ppb

201

201+

Sulfur Dioxide (SO₂)

1.72 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.54 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.14 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

St. Charles, Illinois

Get Live Pollen Counts

St. Charles, Illinois

Scroll To Air Quality Map

Track live St. Charles, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T23:00:00.000Z	49 \| good	9.367 \| good	38.303 \| good	37.923 \| good	1.518 \| good	3.256 \| good	0.221 \| good
2026-07-22T00:00:00.000Z	52 \| moderate	9.625 \| good	41.583 \| good	44.896 \| good	2.222 \| good	2.181 \| good	0.19 \| good
2026-07-22T01:00:00.000Z	49 \| good	8.544 \| good	52.344 \| good	38.582 \| good	1.148 \| good	3.085 \| good	0.19 \| good
2026-07-22T02:00:00.000Z	34 \| good	6.466 \| good	37.19 \| good	37.198 \| good	0.765 \| good	2.696 \| good	0.19 \| good
2026-07-22T03:00:00.000Z	38 \| good	7.153 \| good	27.425 \| good	32.037 \| good	0.576 \| good	2.756 \| good	0.147 \| good
2026-07-22T04:00:00.000Z	24 \| good	3.772 \| good	15.715 \| good	25.704 \| good	0.637 \| good	2.984 \| good	0.147 \| good
2026-07-22T05:00:00.000Z	23 \| good	3.939 \| good	13.856 \| good	24.835 \| good	0.581 \| good	2.937 \| good	0.147 \| good
2026-07-22T06:00:00.000Z	22 \| good	3.819 \| good	19.531 \| good	23.868 \| good	0.379 \| good	2.876 \| good	0.164 \| good
2026-07-22T07:00:00.000Z	22 \| good	3.688 \| good	12.965 \| good	23.573 \| good	0.492 \| good	2.629 \| good	0.164 \| good
2026-07-22T08:00:00.000Z	22 \| good	3.28 \| good	13.137 \| good	23.739 \| good	0.588 \| good	3.768 \| good	0.164 \| good
2026-07-22T09:00:00.000Z	21 \| good	2.586 \| good	10.322 \| good	22.661 \| good	0.862 \| good	3.382 \| good	0.184 \| good
2026-07-22T10:00:00.000Z	20 \| good	2.332 \| good	9.06 \| good	22.328 \| good	0.605 \| good	4.555 \| good	0.178 \| good
2026-07-22T11:00:00.000Z	21 \| good	2.371 \| good	9.529 \| good	22.705 \| good	0.656 \| good	6.172 \| good	0.214 \| good
2026-07-22T12:00:00.000Z	20 \| good	2.684 \| good	11.13 \| good	22.456 \| good	0.677 \| good	7.472 \| good	0.231 \| good
2026-07-22T13:00:00.000Z	20 \| good	3 \| good	14.756 \| good	22.258 \| good	0.445 \| good	8.224 \| good	0.231 \| good
2026-07-22T14:00:00.000Z	21 \| good	2.823 \| good	12.805 \| good	23.161 \| good	0.456 \| good	7.684 \| good	0.182 \| good
2026-07-22T15:00:00.000Z	25 \| good	2.904 \| good	11.826 \| good	27.086 \| good	0.78 \| good	3.024 \| good	0.157 \| good
2026-07-22T16:00:00.000Z	27 \| good	3.182 \| good	12.529 \| good	28.655 \| good	0.817 \| good	2.751 \| good	0.16 \| good
2026-07-22T17:00:00.000Z	29 \| good	3.226 \| good	15.745 \| good	31.496 \| good	1.817 \| good	1.603 \| good	0.16 \| good
2026-07-22T18:00:00.000Z	31 \| good	3.179 \| good	11.786 \| good	34.075 \| good	2.573 \| good	1.605 \| good	0.16 \| good
2026-07-22T19:00:00.000Z	32 \| good	3.616 \| good	16.094 \| good	35.4 \| good	1.298 \| good	1.64 \| good	0.16 \| good
2026-07-22T20:00:00.000Z	36 \| good	4.221 \| good	18.389 \| good	38.585 \| good	1.298 \| good	1.536 \| good	0.125 \| good
2026-07-22T21:00:00.000Z	36 \| good	4.36 \| good	20.14 \| good	39.469 \| good	1.697 \| good	1.946 \| good	0.143 \| good
2026-07-22T22:00:00.000Z	35 \| good	3.87 \| good	17.18 \| good	38.288 \| good	2.264 \| good	1.945 \| good	0.112 \| good
2026-07-22T23:00:00.000Z	36 \| good	3.908 \| good	17.333 \| good	38.781 \| good	0.524 \| good	2.441 \| good	0.112 \| good
2026-07-23T00:00:00.000Z	34 \| good	4.824 \| good	21.059 \| good	37.208 \| good	0.789 \| good	2.569 \| good	0.143 \| good
2026-07-23T01:00:00.000Z	33 \| good	5.722 \| good	22.937 \| good	35.625 \| good	1.302 \| good	4.665 \| good	0.143 \| good
2026-07-23T02:00:00.000Z	33 \| good	5.897 \| good	21.096 \| good	35.514 \| good	1.014 \| good	4.297 \| good	0.159 \| good
2026-07-23T03:00:00.000Z	58 \| moderate	12.733 \| fine	57.381 \| fine	13.804 \| good	0.628 \| good	8.646 \| good	0.146 \| good
2026-07-23T04:00:00.000Z	27 \| good	5.157 \| good	21.139 \| good	27.437 \| good	0.528 \| good	9.035 \| good	0.205 \| good
2026-07-23T05:00:00.000Z	29 \| good	4.753 \| good	19.04 \| good	30.512 \| good	0.599 \| good	7.933 \| good	0.202 \| good
2026-07-23T06:00:00.000Z	44 \| good	7.932 \| good	36.475 \| good	24.305 \| good	0.793 \| good	11.982 \| good	0.159 \| good
2026-07-23T07:00:00.000Z	49 \| good	8.892 \| good	31.077 \| good	20.436 \| good	0.781 \| good	13.159 \| good	0.159 \| good
2026-07-23T08:00:00.000Z	44 \| good	8.388 \| good	37.255 \| good	18.878 \| good	0.859 \| good	13.926 \| good	0.159 \| good
2026-07-23T09:00:00.000Z	44 \| good	8.329 \| good	35.85 \| good	16.381 \| good	0.929 \| good	12.387 \| good	0.159 \| good
2026-07-23T10:00:00.000Z	38 \| good	7.309 \| good	29.714 \| good	22.916 \| good	1.035 \| good	13.265 \| good	0.19 \| good
2026-07-23T11:00:00.000Z	44 \| good	8.132 \| good	37.476 \| good	21.098 \| good	1.186 \| good	11.74 \| good	0.202 \| good
2026-07-23T12:00:00.000Z	52 \| moderate	10.086 \| good	44.955 \| good	6.788 \| good	1.36 \| good	13.787 \| good	0.258 \| good
2026-07-23T13:00:00.000Z	54 \| moderate	10.567 \| good	47.168 \| good	10.088 \| good	1.534 \| good	11.976 \| good	0.258 \| good
2026-07-23T14:00:00.000Z	49 \| good	8.904 \| good	40.769 \| good	11.372 \| good	2.126 \| good	12.532 \| good	0.272 \| good
2026-07-23T15:00:00.000Z	38 \| good	7.49 \| good	35.477 \| good	18.742 \| good	2.626 \| good	11.581 \| good	0.244 \| good
2026-07-23T16:00:00.000Z	33 \| good	5.729 \| good	25.185 \| good	24.456 \| good	2.828 \| good	5.804 \| good	0.15 \| good
2026-07-23T17:00:00.000Z	33 \| good	6.443 \| good	29.888 \| good	30.468 \| good	2.206 \| good	4.312 \| good	0.126 \| good
2026-07-23T18:00:00.000Z	34 \| good	5.529 \| good	26.526 \| good	36.786 \| good	2.012 \| good	6.795 \| good	0.174 \| good
2026-07-23T19:00:00.000Z	38 \| good	6.988 \| good	31.797 \| good	40.767 \| good	1.746 \| good	6.395 \| good	0.141 \| good
2026-07-23T20:00:00.000Z	39 \| good	6.178 \| good	29.52 \| good	42.258 \| good	1.327 \| good	4.685 \| good	0.141 \| good
2026-07-23T21:00:00.000Z	41 \| good	6.118 \| good	25.277 \| good	44.404 \| good	1.738 \| good	4.547 \| good	0.141 \| good
2026-07-23T22:00:00.000Z	41 \| good	6.551 \| good	31.853 \| good	44.011 \| good	1.719 \| good	4.543 \| good	0.14 \| good
2026-07-23T23:00:00.000Z	35 \| good	3.134 \| good	13.514 \| good	38.316 \| good	0.931 \| good	1.84 \| good	0.118 \| good
2026-07-24T00:00:00.000Z	32 \| good	3.791 \| good	16.716 \| good	35.214 \| good	0.961 \| good	2.782 \| good	0.124 \| good
2026-07-24T01:00:00.000Z	44 \| good	8.282 \| good	36.297 \| good	33.322 \| good	0.939 \| good	6.824 \| good	0.148 \| good
2026-07-24T02:00:00.000Z	54 \| moderate	10.921 \| good	48.109 \| good	31.174 \| good	0.905 \| good	13.319 \| good	0.182 \| good
2026-07-24T03:00:00.000Z	58 \| moderate	12.512 \| fine	56.179 \| fine	30.194 \| good	0.88 \| good	18.427 \| good	0.207 \| good
2026-07-24T04:00:00.000Z	56 \| moderate	12.454 \| fine	56.116 \| fine	28.981 \| good	0.889 \| good	21.859 \| good	0.231 \| good
2026-07-24T05:00:00.000Z	58 \| moderate	12.879 \| fine	58.019 \| fine	25.129 \| good	0.903 \| good	23.182 \| good	0.257 \| good
2026-07-24T06:00:00.000Z	52 \| moderate	10.473 \| good	46.589 \| good	19.704 \| good	0.865 \| good	24.131 \| good	0.271 \| good
2026-07-24T07:00:00.000Z	49 \| good	8.706 \| good	38.498 \| good	17.164 \| good	0.855 \| good	24.745 \| good	0.276 \| good
2026-07-24T08:00:00.000Z	38 \| good	6.529 \| good	28.818 \| good	15.296 \| good	0.848 \| good	25.289 \| good	0.283 \| good
2026-07-24T09:00:00.000Z	25 \| good	3.685 \| good	15.935 \| good	12.818 \| good	0.858 \| good	26.256 \| good	0.293 \| good
2026-07-24T10:00:00.000Z	25 \| good	2.752 \| good	11.275 \| good	8.868 \| good	0.887 \| good	27.418 \| good	0.302 \| good
2026-07-24T11:00:00.000Z	25 \| good	1.642 \| good	6.978 \| good	8.291 \| good	0.93 \| good	25.633 \| good	0.316 \| good
2026-07-24T12:00:00.000Z	21 \| good	1.615 \| good	6.955 \| good	7.711 \| good	0.976 \| good	22.39 \| good	0.32 \| good
2026-07-24T13:00:00.000Z	18 \| good	1.169 \| good	4.648 \| good	18.716 \| good	1.316 \| good	16.562 \| good	0.235 \| good
2026-07-24T14:00:00.000Z	26 \| good	1.11 \| good	4.69 \| good	28.207 \| good	1.781 \| good	9.982 \| good	0.18 \| good
2026-07-24T15:00:00.000Z	31 \| good	1.099 \| good	4.69 \| good	34.043 \| good	1.788 \| good	6.079 \| good	0.156 \| good
2026-07-24T16:00:00.000Z	36 \| good	1.209 \| good	4.888 \| good	38.714 \| good	1.405 \| good	3.276 \| good	0.141 \| good
2026-07-24T17:00:00.000Z	38 \| good	1.205 \| good	4.934 \| good	40.766 \| good	1.025 \| good	1.791 \| good	0.135 \| good
2026-07-24T18:00:00.000Z	39 \| good	1.128 \| good	4.798 \| good	42.262 \| good	0.829 \| good	1.151 \| good	0.134 \| good
2026-07-24T19:00:00.000Z	41 \| good	1.652 \| good	6.753 \| good	43.671 \| good	0.745 \| good	0.941 \| good	0.136 \| good
2026-07-24T20:00:00.000Z	41 \| good	1.599 \| good	6.264 \| good	44.155 \| good	0.679 \| good	0.899 \| good	0.138 \| good
2026-07-24T21:00:00.000Z	42 \| good	1.518 \| good	6.101 \| good	45.252 \| good	0.602 \| good	0.941 \| good	0.141 \| good
2026-07-24T22:00:00.000Z	41 \| good	1.471 \| good	5.932 \| good	44.432 \| good	0.523 \| good	1.038 \| good	0.144 \| good
2026-07-24T23:00:00.000Z	36 \| good	1.558 \| good	6.147 \| good	38.947 \| good	0.472 \| good	1.275 \| good	0.148 \| good
2026-07-25T00:00:00.000Z	31 \| good	1.719 \| good	7.06 \| good	33.343 \| good	0.441 \| good	1.806 \| good	0.153 \| good
2026-07-25T01:00:00.000Z	28 \| good	1.88 \| good	7.91 \| good	29.717 \| good	0.428 \| good	3.294 \| good	0.16 \| good
2026-07-25T02:00:00.000Z	27 \| good	1.93 \| good	8 \| good	29.076 \| good	0.444 \| good	5.335 \| good	0.17 \| good
2026-07-25T03:00:00.000Z	27 \| good	2.003 \| good	8 \| good	28.507 \| good	0.464 \| good	6.152 \| good	0.174 \| good
2026-07-25T04:00:00.000Z	26 \| good	1.407 \| good	5.491 \| good	27.729 \| good	0.505 \| good	6.438 \| good	0.177 \| good
2026-07-25T05:00:00.000Z	24 \| good	2.277 \| good	9.105 \| good	25.899 \| good	0.561 \| good	6.473 \| good	0.18 \| good
2026-07-25T06:00:00.000Z	22 \| good	2.476 \| good	9.72 \| good	23.764 \| good	0.607 \| good	6.581 \| good	0.183 \| good
2026-07-25T07:00:00.000Z	20 \| good	0.173 \| good	0.605 \| good	21.878 \| good	0.643 \| good	7.598 \| good	0.188 \| good
2026-07-25T08:00:00.000Z	18 \| good	0.647 \| good	2 \| good	18.545 \| good	0.675 \| good	9.089 \| good	0.195 \| good
2026-07-25T09:00:00.000Z	16 \| good	0.436 \| good	1.397 \| good	17.477 \| good	0.702 \| good	10.301 \| good	0.201 \| good
2026-07-25T10:00:00.000Z	13 \| good	0.431 \| good	1.477 \| good	14.382 \| good	0.736 \| good	10.512 \| good	0.203 \| good
2026-07-25T11:00:00.000Z	12 \| good	0.328 \| good	1 \| good	13.121 \| good	0.772 \| good	10.218 \| good	0.203 \| good
2026-07-25T12:00:00.000Z	11 \| good	0.622 \| good	1.929 \| good	12.253 \| good	0.768 \| good	10.236 \| good	0.207 \| good
2026-07-25T13:00:00.000Z	11 \| good	1.167 \| good	5.052 \| good	12.152 \| good	0.861 \| good	8.402 \| good	0.201 \| good
2026-07-25T14:00:00.000Z	22 \| good	3.816 \| good	16.53 \| good	15.918 \| good	0.914 \| good	6.471 \| good	0.196 \| good
2026-07-25T15:00:00.000Z	49 \| good	8.992 \| good	39.386 \| good	23.845 \| good	0.924 \| good	4.735 \| good	0.193 \| good
2026-07-25T16:00:00.000Z	38 \| good	6.865 \| good	30.15 \| good	32.506 \| good	0.918 \| good	3.331 \| good	0.191 \| good
2026-07-25T17:00:00.000Z	31 \| good	4.176 \| good	18.507 \| good	32.668 \| good	0.94 \| good	1.933 \| good	0.189 \| good
2026-07-25T18:00:00.000Z	29 \| good	3.755 \| good	16.46 \| good	30.631 \| good	0.91 \| good	1.122 \| good	0.189 \| good
2026-07-25T19:00:00.000Z	30 \| good	3.873 \| good	16.788 \| good	31.667 \| good	0.81 \| good	1.041 \| good	0.189 \| good
2026-07-25T20:00:00.000Z	30 \| good	4.24 \| good	18.435 \| good	32.25 \| good	0.75 \| good	1.196 \| good	0.19 \| good
2026-07-25T21:00:00.000Z	29 \| good	3.511 \| good	15.629 \| good	30.784 \| good	0.7 \| good	1.329 \| good	0.192 \| good
2026-07-25T22:00:00.000Z	29 \| good	2.843 \| good	12.111 \| good	31.441 \| good	0.681 \| good	1.55 \| good	0.194 \| good

St. Charles

Get reliable air quality data to drive your business

St. Charles, Illinois air quality map: Stay updated on AQI near you

0.14ppm

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 St. Charles, Illinois?

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

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

In the past 24 hours, the air quality in St. Charles, Illinois was at its worst at 03:00:00 on 2026-07-23.

When did St. Charles, Illinois experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in St. Charles, Illinois was observed at 04:00:00 on 2026-07-23.

What is the AQI in St. Charles, Illinois right now?

As of now, the AQI in St. Charles, Illinois is 41, indicating Good conditions.

What is the most common type of pollution in St. Charles, Illinois?

St. Charles, Illinois air has the highest levels of O3.

What should I do in case of poor air quality in St. Charles, Illinois?

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

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

PM_2.5 levels in St. Charles, Illinois are currently 6.551 μg/m³.

What is the PM₁₀ level in St. Charles, Illinois at the moment?

The PM₁₀ concentration in St. Charles, Illinois is 31.853 μg/m³ at the moment.

What is the carbon monoxide (CO) level in St. Charles, Illinois at the moment?

The current carbon monoxide (CO) concentration in St. Charles, Illinois is 0.14 ppm.

What is the sulfur dioxide (SO₂) level in St. Charles, Illinois at the moment?

Currently, St. Charles, Illinois has a sulfur dioxide (SO₂) concentration of 1.719 ppb.

What is the ozone (O₃) level in St. Charles, Illinois at the moment?

The current ozone (O₃) level in St. Charles, Illinois at the moment is 44.011 ppm.

What is the nitrogen dioxide (NO₂) level in St. Charles, Illinois at the moment?

Nitrogen dioxide (NO₂) level in St. Charles, Illinois at the moment is 4.543 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T23:00:00.000Z	49 \| good	9.367 \| good	38.303 \| good	37.923 \| good	1.518 \| good	3.256 \| good	0.221 \| good
2026-07-22T00:00:00.000Z	52 \| moderate	9.625 \| good	41.583 \| good	44.896 \| good	2.222 \| good	2.181 \| good	0.19 \| good
2026-07-22T01:00:00.000Z	49 \| good	8.544 \| good	52.344 \| good	38.582 \| good	1.148 \| good	3.085 \| good	0.19 \| good
2026-07-22T02:00:00.000Z	34 \| good	6.466 \| good	37.19 \| good	37.198 \| good	0.765 \| good	2.696 \| good	0.19 \| good
2026-07-22T03:00:00.000Z	38 \| good	7.153 \| good	27.425 \| good	32.037 \| good	0.576 \| good	2.756 \| good	0.147 \| good
2026-07-22T04:00:00.000Z	24 \| good	3.772 \| good	15.715 \| good	25.704 \| good	0.637 \| good	2.984 \| good	0.147 \| good
2026-07-22T05:00:00.000Z	23 \| good	3.939 \| good	13.856 \| good	24.835 \| good	0.581 \| good	2.937 \| good	0.147 \| good
2026-07-22T06:00:00.000Z	22 \| good	3.819 \| good	19.531 \| good	23.868 \| good	0.379 \| good	2.876 \| good	0.164 \| good
2026-07-22T07:00:00.000Z	22 \| good	3.688 \| good	12.965 \| good	23.573 \| good	0.492 \| good	2.629 \| good	0.164 \| good
2026-07-22T08:00:00.000Z	22 \| good	3.28 \| good	13.137 \| good	23.739 \| good	0.588 \| good	3.768 \| good	0.164 \| good
2026-07-22T09:00:00.000Z	21 \| good	2.586 \| good	10.322 \| good	22.661 \| good	0.862 \| good	3.382 \| good	0.184 \| good
2026-07-22T10:00:00.000Z	20 \| good	2.332 \| good	9.06 \| good	22.328 \| good	0.605 \| good	4.555 \| good	0.178 \| good
2026-07-22T11:00:00.000Z	21 \| good	2.371 \| good	9.529 \| good	22.705 \| good	0.656 \| good	6.172 \| good	0.214 \| good
2026-07-22T12:00:00.000Z	20 \| good	2.684 \| good	11.13 \| good	22.456 \| good	0.677 \| good	7.472 \| good	0.231 \| good
2026-07-22T13:00:00.000Z	20 \| good	3 \| good	14.756 \| good	22.258 \| good	0.445 \| good	8.224 \| good	0.231 \| good
2026-07-22T14:00:00.000Z	21 \| good	2.823 \| good	12.805 \| good	23.161 \| good	0.456 \| good	7.684 \| good	0.182 \| good
2026-07-22T15:00:00.000Z	25 \| good	2.904 \| good	11.826 \| good	27.086 \| good	0.78 \| good	3.024 \| good	0.157 \| good
2026-07-22T16:00:00.000Z	27 \| good	3.182 \| good	12.529 \| good	28.655 \| good	0.817 \| good	2.751 \| good	0.16 \| good
2026-07-22T17:00:00.000Z	29 \| good	3.226 \| good	15.745 \| good	31.496 \| good	1.817 \| good	1.603 \| good	0.16 \| good
2026-07-22T18:00:00.000Z	31 \| good	3.179 \| good	11.786 \| good	34.075 \| good	2.573 \| good	1.605 \| good	0.16 \| good
2026-07-22T19:00:00.000Z	32 \| good	3.616 \| good	16.094 \| good	35.4 \| good	1.298 \| good	1.64 \| good	0.16 \| good
2026-07-22T20:00:00.000Z	36 \| good	4.221 \| good	18.389 \| good	38.585 \| good	1.298 \| good	1.536 \| good	0.125 \| good
2026-07-22T21:00:00.000Z	36 \| good	4.36 \| good	20.14 \| good	39.469 \| good	1.697 \| good	1.946 \| good	0.143 \| good
2026-07-22T22:00:00.000Z	35 \| good	3.87 \| good	17.18 \| good	38.288 \| good	2.264 \| good	1.945 \| good	0.112 \| good
2026-07-22T23:00:00.000Z	36 \| good	3.908 \| good	17.333 \| good	38.781 \| good	0.524 \| good	2.441 \| good	0.112 \| good
2026-07-23T00:00:00.000Z	34 \| good	4.824 \| good	21.059 \| good	37.208 \| good	0.789 \| good	2.569 \| good	0.143 \| good
2026-07-23T01:00:00.000Z	33 \| good	5.722 \| good	22.937 \| good	35.625 \| good	1.302 \| good	4.665 \| good	0.143 \| good
2026-07-23T02:00:00.000Z	33 \| good	5.897 \| good	21.096 \| good	35.514 \| good	1.014 \| good	4.297 \| good	0.159 \| good
2026-07-23T03:00:00.000Z	58 \| moderate	12.733 \| fine	57.381 \| fine	13.804 \| good	0.628 \| good	8.646 \| good	0.146 \| good
2026-07-23T04:00:00.000Z	27 \| good	5.157 \| good	21.139 \| good	27.437 \| good	0.528 \| good	9.035 \| good	0.205 \| good
2026-07-23T05:00:00.000Z	29 \| good	4.753 \| good	19.04 \| good	30.512 \| good	0.599 \| good	7.933 \| good	0.202 \| good
2026-07-23T06:00:00.000Z	44 \| good	7.932 \| good	36.475 \| good	24.305 \| good	0.793 \| good	11.982 \| good	0.159 \| good
2026-07-23T07:00:00.000Z	49 \| good	8.892 \| good	31.077 \| good	20.436 \| good	0.781 \| good	13.159 \| good	0.159 \| good
2026-07-23T08:00:00.000Z	44 \| good	8.388 \| good	37.255 \| good	18.878 \| good	0.859 \| good	13.926 \| good	0.159 \| good
2026-07-23T09:00:00.000Z	44 \| good	8.329 \| good	35.85 \| good	16.381 \| good	0.929 \| good	12.387 \| good	0.159 \| good
2026-07-23T10:00:00.000Z	38 \| good	7.309 \| good	29.714 \| good	22.916 \| good	1.035 \| good	13.265 \| good	0.19 \| good
2026-07-23T11:00:00.000Z	44 \| good	8.132 \| good	37.476 \| good	21.098 \| good	1.186 \| good	11.74 \| good	0.202 \| good
2026-07-23T12:00:00.000Z	52 \| moderate	10.086 \| good	44.955 \| good	6.788 \| good	1.36 \| good	13.787 \| good	0.258 \| good
2026-07-23T13:00:00.000Z	54 \| moderate	10.567 \| good	47.168 \| good	10.088 \| good	1.534 \| good	11.976 \| good	0.258 \| good
2026-07-23T14:00:00.000Z	49 \| good	8.904 \| good	40.769 \| good	11.372 \| good	2.126 \| good	12.532 \| good	0.272 \| good
2026-07-23T15:00:00.000Z	38 \| good	7.49 \| good	35.477 \| good	18.742 \| good	2.626 \| good	11.581 \| good	0.244 \| good
2026-07-23T16:00:00.000Z	33 \| good	5.729 \| good	25.185 \| good	24.456 \| good	2.828 \| good	5.804 \| good	0.15 \| good
2026-07-23T17:00:00.000Z	33 \| good	6.443 \| good	29.888 \| good	30.468 \| good	2.206 \| good	4.312 \| good	0.126 \| good
2026-07-23T18:00:00.000Z	34 \| good	5.529 \| good	26.526 \| good	36.786 \| good	2.012 \| good	6.795 \| good	0.174 \| good
2026-07-23T19:00:00.000Z	38 \| good	6.988 \| good	31.797 \| good	40.767 \| good	1.746 \| good	6.395 \| good	0.141 \| good
2026-07-23T20:00:00.000Z	39 \| good	6.178 \| good	29.52 \| good	42.258 \| good	1.327 \| good	4.685 \| good	0.141 \| good
2026-07-23T21:00:00.000Z	41 \| good	6.118 \| good	25.277 \| good	44.404 \| good	1.738 \| good	4.547 \| good	0.141 \| good
2026-07-23T22:00:00.000Z	41 \| good	6.551 \| good	31.853 \| good	44.011 \| good	1.719 \| good	4.543 \| good	0.14 \| good
2026-07-23T23:00:00.000Z	35 \| good	3.134 \| good	13.514 \| good	38.316 \| good	0.931 \| good	1.84 \| good	0.118 \| good
2026-07-24T00:00:00.000Z	32 \| good	3.791 \| good	16.716 \| good	35.214 \| good	0.961 \| good	2.782 \| good	0.124 \| good
2026-07-24T01:00:00.000Z	44 \| good	8.282 \| good	36.297 \| good	33.322 \| good	0.939 \| good	6.824 \| good	0.148 \| good
2026-07-24T02:00:00.000Z	54 \| moderate	10.921 \| good	48.109 \| good	31.174 \| good	0.905 \| good	13.319 \| good	0.182 \| good
2026-07-24T03:00:00.000Z	58 \| moderate	12.512 \| fine	56.179 \| fine	30.194 \| good	0.88 \| good	18.427 \| good	0.207 \| good
2026-07-24T04:00:00.000Z	56 \| moderate	12.454 \| fine	56.116 \| fine	28.981 \| good	0.889 \| good	21.859 \| good	0.231 \| good
2026-07-24T05:00:00.000Z	58 \| moderate	12.879 \| fine	58.019 \| fine	25.129 \| good	0.903 \| good	23.182 \| good	0.257 \| good
2026-07-24T06:00:00.000Z	52 \| moderate	10.473 \| good	46.589 \| good	19.704 \| good	0.865 \| good	24.131 \| good	0.271 \| good
2026-07-24T07:00:00.000Z	49 \| good	8.706 \| good	38.498 \| good	17.164 \| good	0.855 \| good	24.745 \| good	0.276 \| good
2026-07-24T08:00:00.000Z	38 \| good	6.529 \| good	28.818 \| good	15.296 \| good	0.848 \| good	25.289 \| good	0.283 \| good
2026-07-24T09:00:00.000Z	25 \| good	3.685 \| good	15.935 \| good	12.818 \| good	0.858 \| good	26.256 \| good	0.293 \| good
2026-07-24T10:00:00.000Z	25 \| good	2.752 \| good	11.275 \| good	8.868 \| good	0.887 \| good	27.418 \| good	0.302 \| good
2026-07-24T11:00:00.000Z	25 \| good	1.642 \| good	6.978 \| good	8.291 \| good	0.93 \| good	25.633 \| good	0.316 \| good
2026-07-24T12:00:00.000Z	21 \| good	1.615 \| good	6.955 \| good	7.711 \| good	0.976 \| good	22.39 \| good	0.32 \| good
2026-07-24T13:00:00.000Z	18 \| good	1.169 \| good	4.648 \| good	18.716 \| good	1.316 \| good	16.562 \| good	0.235 \| good
2026-07-24T14:00:00.000Z	26 \| good	1.11 \| good	4.69 \| good	28.207 \| good	1.781 \| good	9.982 \| good	0.18 \| good
2026-07-24T15:00:00.000Z	31 \| good	1.099 \| good	4.69 \| good	34.043 \| good	1.788 \| good	6.079 \| good	0.156 \| good
2026-07-24T16:00:00.000Z	36 \| good	1.209 \| good	4.888 \| good	38.714 \| good	1.405 \| good	3.276 \| good	0.141 \| good
2026-07-24T17:00:00.000Z	38 \| good	1.205 \| good	4.934 \| good	40.766 \| good	1.025 \| good	1.791 \| good	0.135 \| good
2026-07-24T18:00:00.000Z	39 \| good	1.128 \| good	4.798 \| good	42.262 \| good	0.829 \| good	1.151 \| good	0.134 \| good
2026-07-24T19:00:00.000Z	41 \| good	1.652 \| good	6.753 \| good	43.671 \| good	0.745 \| good	0.941 \| good	0.136 \| good
2026-07-24T20:00:00.000Z	41 \| good	1.599 \| good	6.264 \| good	44.155 \| good	0.679 \| good	0.899 \| good	0.138 \| good
2026-07-24T21:00:00.000Z	42 \| good	1.518 \| good	6.101 \| good	45.252 \| good	0.602 \| good	0.941 \| good	0.141 \| good
2026-07-24T22:00:00.000Z	41 \| good	1.471 \| good	5.932 \| good	44.432 \| good	0.523 \| good	1.038 \| good	0.144 \| good
2026-07-24T23:00:00.000Z	36 \| good	1.558 \| good	6.147 \| good	38.947 \| good	0.472 \| good	1.275 \| good	0.148 \| good
2026-07-25T00:00:00.000Z	31 \| good	1.719 \| good	7.06 \| good	33.343 \| good	0.441 \| good	1.806 \| good	0.153 \| good
2026-07-25T01:00:00.000Z	28 \| good	1.88 \| good	7.91 \| good	29.717 \| good	0.428 \| good	3.294 \| good	0.16 \| good
2026-07-25T02:00:00.000Z	27 \| good	1.93 \| good	8 \| good	29.076 \| good	0.444 \| good	5.335 \| good	0.17 \| good
2026-07-25T03:00:00.000Z	27 \| good	2.003 \| good	8 \| good	28.507 \| good	0.464 \| good	6.152 \| good	0.174 \| good
2026-07-25T04:00:00.000Z	26 \| good	1.407 \| good	5.491 \| good	27.729 \| good	0.505 \| good	6.438 \| good	0.177 \| good
2026-07-25T05:00:00.000Z	24 \| good	2.277 \| good	9.105 \| good	25.899 \| good	0.561 \| good	6.473 \| good	0.18 \| good
2026-07-25T06:00:00.000Z	22 \| good	2.476 \| good	9.72 \| good	23.764 \| good	0.607 \| good	6.581 \| good	0.183 \| good
2026-07-25T07:00:00.000Z	20 \| good	0.173 \| good	0.605 \| good	21.878 \| good	0.643 \| good	7.598 \| good	0.188 \| good
2026-07-25T08:00:00.000Z	18 \| good	0.647 \| good	2 \| good	18.545 \| good	0.675 \| good	9.089 \| good	0.195 \| good
2026-07-25T09:00:00.000Z	16 \| good	0.436 \| good	1.397 \| good	17.477 \| good	0.702 \| good	10.301 \| good	0.201 \| good
2026-07-25T10:00:00.000Z	13 \| good	0.431 \| good	1.477 \| good	14.382 \| good	0.736 \| good	10.512 \| good	0.203 \| good
2026-07-25T11:00:00.000Z	12 \| good	0.328 \| good	1 \| good	13.121 \| good	0.772 \| good	10.218 \| good	0.203 \| good
2026-07-25T12:00:00.000Z	11 \| good	0.622 \| good	1.929 \| good	12.253 \| good	0.768 \| good	10.236 \| good	0.207 \| good
2026-07-25T13:00:00.000Z	11 \| good	1.167 \| good	5.052 \| good	12.152 \| good	0.861 \| good	8.402 \| good	0.201 \| good
2026-07-25T14:00:00.000Z	22 \| good	3.816 \| good	16.53 \| good	15.918 \| good	0.914 \| good	6.471 \| good	0.196 \| good
2026-07-25T15:00:00.000Z	49 \| good	8.992 \| good	39.386 \| good	23.845 \| good	0.924 \| good	4.735 \| good	0.193 \| good
2026-07-25T16:00:00.000Z	38 \| good	6.865 \| good	30.15 \| good	32.506 \| good	0.918 \| good	3.331 \| good	0.191 \| good
2026-07-25T17:00:00.000Z	31 \| good	4.176 \| good	18.507 \| good	32.668 \| good	0.94 \| good	1.933 \| good	0.189 \| good
2026-07-25T18:00:00.000Z	29 \| good	3.755 \| good	16.46 \| good	30.631 \| good	0.91 \| good	1.122 \| good	0.189 \| good
2026-07-25T19:00:00.000Z	30 \| good	3.873 \| good	16.788 \| good	31.667 \| good	0.81 \| good	1.041 \| good	0.189 \| good
2026-07-25T20:00:00.000Z	30 \| good	4.24 \| good	18.435 \| good	32.25 \| good	0.75 \| good	1.196 \| good	0.19 \| good
2026-07-25T21:00:00.000Z	29 \| good	3.511 \| good	15.629 \| good	30.784 \| good	0.7 \| good	1.329 \| good	0.192 \| good
2026-07-25T22:00:00.000Z	29 \| good	2.843 \| good	12.111 \| good	31.441 \| good	0.681 \| good	1.55 \| good	0.194 \| good

Live air quality index in St. Charles, Illinois today

Major air pollutants in St. Charles, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Air quality in nearby cities

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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 ozone (O₃) level in St. Charles, Illinois at the moment?

What is the nitrogen dioxide (NO₂) level in St. Charles, Illinois at the moment?