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

The PM10 concentration in St. Charles, Illinois is 191.053 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 0.978 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 39.488 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 5.349 ppb.

Real-time air quality index in St. Charles, Illinois today

Name: Live air pollution levels in St. Charles, Illinois today
Creator: Ambee

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)

137

Unhealthy for sensitive groups

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)

49.74 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

191.05 μg/m³

155

255

425

605+

Ozone (O₃)

39.49 ppb

201

201+

Sulfur Dioxide (SO₂)

0.98 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.35 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

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
2025-06-04T07:00:00.000Z	43 \| good	5.927 \| good	45.738 \| good	43.937 \| good	0.308 \| good	2.726 \| good	0.569 \| good
2025-06-04T08:00:00.000Z	39 \| good	4.887 \| good	33.619 \| good	41.968 \| good	0.429 \| good	5.007 \| good	0.728 \| good
2025-06-04T09:00:00.000Z	35 \| good	4.019 \| good	16.437 \| good	37.969 \| good	0.463 \| good	4.168 \| good	0.843 \| good
2025-06-04T10:00:00.000Z	69 \| moderate	19.24 \| fine	85.715 \| fine	35.976 \| good	0.541 \| good	4.028 \| good	0.842 \| good
2025-06-04T11:00:00.000Z	56 \| moderate	11.613 \| good	59.162 \| fine	41.26 \| good	0.457 \| good	4.161 \| good	0.884 \| good
2025-06-04T12:00:00.000Z	46 \| good	2.842 \| good	50.413 \| good	37.133 \| good	0.359 \| good	4.56 \| good	0.703 \| good
2025-06-04T13:00:00.000Z	54 \| moderate	10.586 \| good	46.84 \| good	24.54 \| good	0.445 \| good	4.039 \| good	0.229 \| good
2025-06-04T14:00:00.000Z	102 \| sensitive	35.836 \| moderate	155.406 \| moderate	33.868 \| good	0.26 \| good	5.178 \| good	0.818 \| good
2025-06-04T15:00:00.000Z	81 \| moderate	25.467 \| fine	94.264 \| fine	35.799 \| good	0.316 \| good	6.812 \| good	0.797 \| good
2025-06-04T16:00:00.000Z	77 \| moderate	20.041 \| fine	107.627 \| fine	37.809 \| good	0.418 \| good	3.812 \| good	0.504 \| good
2025-06-04T17:00:00.000Z	90 \| moderate	27.745 \| fine	134.407 \| fine	33.118 \| good	0.418 \| good	5.491 \| good	0.598 \| good
2025-06-04T18:00:00.000Z	81 \| moderate	24.8 \| fine	81.405 \| fine	33.548 \| good	0.425 \| good	5.2 \| good	0.615 \| good
2025-06-04T19:00:00.000Z	85 \| moderate	26.057 \| fine	123.687 \| fine	38.49 \| good	0.374 \| good	2.75 \| good	0.57 \| good
2025-06-04T20:00:00.000Z	94 \| moderate	31.877 \| fine	54.838 \| good	44.659 \| good	0.361 \| good	3.33 \| good	0.387 \| good
2025-06-04T21:00:00.000Z	121 \| sensitive	39.186 \| moderate	195.142 \| moderate	47.772 \| good	0.38 \| good	3.589 \| good	0.331 \| good
2025-06-04T22:00:00.000Z	86 \| moderate	28.034 \| fine	117.793 \| fine	50.373 \| good	0.397 \| good	3.42 \| good	0.331 \| good
2025-06-04T23:00:00.000Z	67 \| moderate	17.71 \| fine	70.283 \| fine	47.175 \| good	0.377 \| good	2.09 \| good	0.331 \| good
2025-06-05T00:00:00.000Z	69 \| moderate	18.885 \| fine	87.621 \| fine	45.552 \| good	0.27 \| good	2.775 \| good	0.354 \| good
2025-06-05T01:00:00.000Z	96 \| moderate	32.724 \| fine	105.755 \| fine	41.117 \| good	0.273 \| good	3.731 \| good	0.408 \| good
2025-06-05T02:00:00.000Z	97 \| moderate	34.297 \| fine	93.865 \| fine	36.18 \| good	0.352 \| good	14.19 \| good	0.512 \| good
2025-06-05T03:00:00.000Z	113 \| sensitive	33.396 \| fine	178.849 \| moderate	29.161 \| good	0.406 \| good	19.649 \| good	0.509 \| good
2025-06-05T04:00:00.000Z	77 \| moderate	22.86 \| fine	102.182 \| fine	31.198 \| good	0.392 \| good	31.206 \| good	0.539 \| good
2025-06-05T05:00:00.000Z	73 \| moderate	20.569 \| fine	72.65 \| fine	22.653 \| good	0.367 \| good	27.67 \| good	0.507 \| good
2025-06-05T06:00:00.000Z	105 \| sensitive	37.303 \| moderate	122.599 \| fine	25.424 \| good	0.324 \| good	25.15 \| good	0.507 \| good
2025-06-05T07:00:00.000Z	117 \| sensitive	42.015 \| moderate	177.155 \| moderate	15.102 \| good	0.431 \| good	19.203 \| good	0.476 \| good
2025-06-05T08:00:00.000Z	122 \| sensitive	43.919 \| moderate	171.237 \| moderate	7.963 \| good	0.45 \| good	17.373 \| good	0.462 \| good
2025-06-05T09:00:00.000Z	105 \| sensitive	37.433 \| moderate	147.425 \| fine	9.322 \| good	0.432 \| good	15.396 \| good	0.494 \| good
2025-06-05T10:00:00.000Z	110 \| sensitive	38.791 \| moderate	126.197 \| fine	9.595 \| good	0.396 \| good	14.466 \| good	0.474 \| good
2025-06-05T11:00:00.000Z	107 \| sensitive	37.829 \| moderate	168.038 \| moderate	19.242 \| good	0.356 \| good	15.239 \| good	0.548 \| good
2025-06-05T12:00:00.000Z	108 \| sensitive	36.557 \| moderate	169.625 \| moderate	13.608 \| good	0.31 \| good	16.01 \| good	0.542 \| good
2025-06-05T13:00:00.000Z	112 \| sensitive	40.434 \| moderate	167.74 \| moderate	15.879 \| good	0.422 \| good	7.859 \| good	0.479 \| good
2025-06-05T14:00:00.000Z	110 \| sensitive	38.939 \| moderate	159.397 \| moderate	21.267 \| good	0.336 \| good	3.942 \| good	0.403 \| good
2025-06-05T15:00:00.000Z	124 \| sensitive	45.014 \| moderate	201.959 \| moderate	29.227 \| good	0.294 \| good	3.441 \| good	0.39 \| good
2025-06-05T16:00:00.000Z	137 \| sensitive	50.035 \| moderate	180.944 \| moderate	33.786 \| good	0.651 \| good	3.483 \| good	0.39 \| good
2025-06-05T17:00:00.000Z	149 \| sensitive	55.229 \| moderate	220.641 \| moderate	40.708 \| good	2.334 \| good	2.796 \| good	0.371 \| good
2025-06-05T18:00:00.000Z	122 \| sensitive	44.402 \| moderate	128.458 \| fine	46.734 \| good	1.111 \| good	1.846 \| good	0.359 \| good
2025-06-05T19:00:00.000Z	133 \| sensitive	41.684 \| moderate	219.413 \| moderate	46.407 \| good	1.162 \| good	1.514 \| good	0.309 \| good
2025-06-05T20:00:00.000Z	129 \| sensitive	46.751 \| moderate	164.776 \| moderate	51.44 \| good	0.888 \| good	2.593 \| good	0.29 \| good
2025-06-05T21:00:00.000Z	154 \| unhealthy	59.869 \| poor	175.362 \| moderate	52.847 \| good	0.903 \| good	2.32 \| good	0.263 \| good
2025-06-05T22:00:00.000Z	122 \| sensitive	43.668 \| moderate	160.48 \| moderate	53.535 \| good	0.471 \| good	4.532 \| good	0.263 \| good
2025-06-05T23:00:00.000Z	122 \| sensitive	44.395 \| moderate	136.307 \| fine	58.596 \| fine	0.415 \| good	6.207 \| good	0.244 \| good
2025-06-06T00:00:00.000Z	142 \| sensitive	52.36 \| moderate	216.74 \| moderate	58.069 \| fine	0.775 \| good	5.329 \| good	0.259 \| good
2025-06-06T01:00:00.000Z	137 \| sensitive	49.371 \| moderate	227.622 \| moderate	50.204 \| good	1.102 \| good	6.371 \| good	0.259 \| good
2025-06-06T02:00:00.000Z	134 \| sensitive	49.34 \| moderate	185.541 \| moderate	50.312 \| good	1.767 \| good	6.344 \| good	0.275 \| good
2025-06-06T03:00:00.000Z	122 \| sensitive	43.909 \| moderate	187.696 \| moderate	43.94 \| good	1.865 \| good	8.585 \| good	0.287 \| good
2025-06-06T04:00:00.000Z	122 \| sensitive	43.734 \| moderate	144.944 \| fine	37.523 \| good	1.729 \| good	3.56 \| good	0.272 \| good
2025-06-06T05:00:00.000Z	137 \| sensitive	49.736 \| moderate	191.053 \| moderate	39.488 \| good	0.978 \| good	5.349 \| good	0.322 \| good
2025-06-06T06:00:00.000Z	137 \| sensitive	49.736 \| moderate	191.053 \| moderate	39.488 \| good	0.978 \| good	5.349 \| good	0.322 \| good
2025-06-06T07:00:00.000Z	111 \| sensitive	39.475 \| moderate	174.63 \| moderate	20.418 \| good	0.872 \| good	6.677 \| good	0.225 \| good
2025-06-06T08:00:00.000Z	100 \| moderate	35.338 \| fine	153.834 \| fine	17.593 \| good	0.944 \| good	6.675 \| good	0.224 \| good
2025-06-06T09:00:00.000Z	97 \| moderate	34.192 \| fine	147.391 \| fine	14.889 \| good	1.017 \| good	6.673 \| good	0.224 \| good
2025-06-06T10:00:00.000Z	94 \| moderate	32.389 \| fine	140.502 \| fine	14.584 \| good	0.928 \| good	6.25 \| good	0.224 \| good
2025-06-06T11:00:00.000Z	92 \| moderate	30.755 \| fine	133.177 \| fine	16.07 \| good	1.025 \| good	6.538 \| good	0.225 \| good
2025-06-06T12:00:00.000Z	82 \| moderate	26.027 \| fine	113.105 \| fine	19.777 \| good	1.122 \| good	6.827 \| good	0.225 \| good
2025-06-06T13:00:00.000Z	81 \| moderate	24.991 \| fine	109.143 \| fine	22.513 \| good	1.468 \| good	4.155 \| good	0.215 \| good
2025-06-06T14:00:00.000Z	77 \| moderate	22.844 \| fine	99.481 \| fine	28.755 \| good	1.589 \| good	4.62 \| good	0.217 \| good
2025-06-06T15:00:00.000Z	69 \| moderate	19.322 \| fine	85.313 \| fine	34.088 \| good	1.711 \| good	5.085 \| good	0.219 \| good
2025-06-06T16:00:00.000Z	67 \| moderate	17.952 \| fine	79.161 \| fine	39.806 \| good	0.872 \| good	1.671 \| good	0.176 \| good
2025-06-06T17:00:00.000Z	64 \| moderate	15.971 \| fine	71.607 \| fine	43.132 \| good	1.011 \| good	2.048 \| good	0.181 \| good
2025-06-06T18:00:00.000Z	62 \| moderate	15.414 \| fine	69.388 \| fine	45.06 \| good	1.151 \| good	2.425 \| good	0.185 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	15.455 \| fine	69.435 \| fine	45.348 \| good	0.826 \| good	1.436 \| good	0.166 \| good
2025-06-06T20:00:00.000Z	60 \| moderate	14.137 \| fine	63.703 \| fine	45.211 \| good	0.955 \| good	1.757 \| good	0.169 \| good
2025-06-06T21:00:00.000Z	56 \| moderate	11.576 \| good	51.532 \| good	45.506 \| good	1.085 \| good	2.079 \| good	0.173 \| good
2025-06-06T22:00:00.000Z	49 \| good	9.416 \| good	41.888 \| good	43.803 \| good	1.024 \| good	4.268 \| good	0.18 \| good
2025-06-06T23:00:00.000Z	58 \| moderate	12.571 \| fine	56.992 \| fine	42.883 \| good	1.184 \| good	5.018 \| good	0.186 \| good
2025-06-07T00:00:00.000Z	71 \| moderate	20.253 \| fine	89.203 \| fine	39.911 \| good	1.344 \| good	5.768 \| good	0.191 \| good
2025-06-07T01:00:00.000Z	71 \| moderate	20.265 \| fine	89.135 \| fine	37.399 \| good	1.334 \| good	11.397 \| good	0.224 \| good
2025-06-07T02:00:00.000Z	69 \| moderate	18.945 \| fine	83.047 \| fine	30.908 \| good	1.474 \| good	12.768 \| good	0.233 \| good
2025-06-07T03:00:00.000Z	66 \| moderate	17.058 \| fine	75.249 \| fine	22.081 \| good	1.615 \| good	14.138 \| good	0.242 \| good
2025-06-07T04:00:00.000Z	58 \| moderate	13.305 \| fine	60.327 \| fine	16.135 \| good	1.402 \| good	13.736 \| good	0.236 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	9.751 \| good	43.249 \| good	15.127 \| good	1.46 \| good	14.305 \| good	0.239 \| good
2025-06-07T06:00:00.000Z	44 \| good	7.644 \| good	33.941 \| good	14.164 \| good	1.517 \| good	14.873 \| good	0.242 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.157 \| good	31.99 \| good	13.835 \| good	1.199 \| good	10.461 \| good	0.203 \| good
2025-06-07T08:00:00.000Z	49 \| good	8.642 \| good	37.982 \| good	13.639 \| good	1.209 \| good	10.146 \| good	0.199 \| good
2025-06-07T09:00:00.000Z	52 \| moderate	10.399 \| good	46.032 \| good	12.108 \| good	1.22 \| good	9.83 \| good	0.195 \| good
2025-06-07T10:00:00.000Z	52 \| moderate	9.879 \| good	43.805 \| good	13.746 \| good	1.003 \| good	7.091 \| good	0.185 \| good
2025-06-07T11:00:00.000Z	52 \| moderate	10.163 \| good	44.776 \| good	17.239 \| good	1.068 \| good	7.316 \| good	0.186 \| good
2025-06-07T12:00:00.000Z	54 \| moderate	11.14 \| good	49.499 \| good	24.391 \| good	1.133 \| good	7.541 \| good	0.186 \| good
2025-06-07T13:00:00.000Z	60 \| moderate	13.722 \| fine	61.454 \| fine	29.263 \| good	1.948 \| good	4.958 \| good	0.212 \| good
2025-06-07T14:00:00.000Z	62 \| moderate	15.106 \| fine	67.257 \| fine	34.144 \| good	2.074 \| good	5.523 \| good	0.219 \| good
2025-06-07T15:00:00.000Z	58 \| moderate	12.662 \| fine	56.734 \| fine	34.938 \| good	2.199 \| good	6.089 \| good	0.227 \| good
2025-06-07T16:00:00.000Z	35 \| good	5.623 \| good	24.08 \| good	38.318 \| good	1.329 \| good	1.686 \| good	0.204 \| good
2025-06-07T17:00:00.000Z	40 \| good	5.225 \| good	22.385 \| good	43.134 \| good	1.398 \| good	1.989 \| good	0.207 \| good
2025-06-07T18:00:00.000Z	42 \| good	4.888 \| good	21.003 \| good	44.632 \| good	1.468 \| good	2.291 \| good	0.209 \| good
2025-06-07T19:00:00.000Z	38 \| good	5.307 \| good	22.934 \| good	40.702 \| good	1.328 \| good	1.673 \| good	0.2 \| good
2025-06-07T20:00:00.000Z	34 \| good	5.255 \| good	22.578 \| good	37.354 \| good	1.393 \| good	2.008 \| good	0.201 \| good
2025-06-07T21:00:00.000Z	33 \| good	6.097 \| good	26.585 \| good	34.74 \| good	1.459 \| good	2.342 \| good	0.202 \| good
2025-06-07T22:00:00.000Z	49 \| good	8.653 \| good	37.941 \| good	32.172 \| good	1.545 \| good	5.971 \| good	0.219 \| good
2025-06-07T23:00:00.000Z	54 \| moderate	10.694 \| good	47.716 \| good	31.732 \| good	1.609 \| good	6.927 \| good	0.221 \| good
2025-06-08T00:00:00.000Z	58 \| moderate	13.284 \| fine	60.49 \| fine	32.671 \| good	1.672 \| good	7.884 \| good	0.223 \| good
2025-06-08T01:00:00.000Z	52 \| moderate	9.728 \| good	43.204 \| good	32.733 \| good	1.724 \| good	9.436 \| good	0.212 \| good
2025-06-08T02:00:00.000Z	52 \| moderate	10.29 \| good	45.214 \| good	30.916 \| good	1.677 \| good	9.873 \| good	0.213 \| good
2025-06-08T03:00:00.000Z	49 \| good	8.982 \| good	40.251 \| good	31.507 \| good	1.63 \| good	10.311 \| good	0.214 \| good
2025-06-08T04:00:00.000Z	38 \| good	7.437 \| good	32.851 \| good	29.825 \| good	1.58 \| good	8.839 \| good	0.21 \| good
2025-06-08T05:00:00.000Z	38 \| good	7.455 \| good	32.914 \| good	30.656 \| good	1.531 \| good	8.91 \| good	0.21 \| good
2025-06-08T06:00:00.000Z	58 \| moderate	12.707 \| fine	13.188 \| good	38.109 \| good	1.465 \| good	8.954 \| good	0.21 \| good

St. Charles

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

0.32ppm

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 09:00:00 on 2025-06-05.

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 09:00:00 on 2025-06-05.

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

As of now, the AQI in St. Charles, Illinois is 137, indicating Unhealthy for Sensitive Groups conditions.

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

St. Charles, Illinois air has the highest levels of PM2.5.

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 49.736 μg/m³.

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

The PM₁₀ concentration in St. Charles, Illinois is 191.053 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 0.322 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 0.978 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 39.488 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 5.349 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T07:00:00.000Z	43 \| good	5.927 \| good	45.738 \| good	43.937 \| good	0.308 \| good	2.726 \| good	0.569 \| good
2025-06-04T08:00:00.000Z	39 \| good	4.887 \| good	33.619 \| good	41.968 \| good	0.429 \| good	5.007 \| good	0.728 \| good
2025-06-04T09:00:00.000Z	35 \| good	4.019 \| good	16.437 \| good	37.969 \| good	0.463 \| good	4.168 \| good	0.843 \| good
2025-06-04T10:00:00.000Z	69 \| moderate	19.24 \| fine	85.715 \| fine	35.976 \| good	0.541 \| good	4.028 \| good	0.842 \| good
2025-06-04T11:00:00.000Z	56 \| moderate	11.613 \| good	59.162 \| fine	41.26 \| good	0.457 \| good	4.161 \| good	0.884 \| good
2025-06-04T12:00:00.000Z	46 \| good	2.842 \| good	50.413 \| good	37.133 \| good	0.359 \| good	4.56 \| good	0.703 \| good
2025-06-04T13:00:00.000Z	54 \| moderate	10.586 \| good	46.84 \| good	24.54 \| good	0.445 \| good	4.039 \| good	0.229 \| good
2025-06-04T14:00:00.000Z	102 \| sensitive	35.836 \| moderate	155.406 \| moderate	33.868 \| good	0.26 \| good	5.178 \| good	0.818 \| good
2025-06-04T15:00:00.000Z	81 \| moderate	25.467 \| fine	94.264 \| fine	35.799 \| good	0.316 \| good	6.812 \| good	0.797 \| good
2025-06-04T16:00:00.000Z	77 \| moderate	20.041 \| fine	107.627 \| fine	37.809 \| good	0.418 \| good	3.812 \| good	0.504 \| good
2025-06-04T17:00:00.000Z	90 \| moderate	27.745 \| fine	134.407 \| fine	33.118 \| good	0.418 \| good	5.491 \| good	0.598 \| good
2025-06-04T18:00:00.000Z	81 \| moderate	24.8 \| fine	81.405 \| fine	33.548 \| good	0.425 \| good	5.2 \| good	0.615 \| good
2025-06-04T19:00:00.000Z	85 \| moderate	26.057 \| fine	123.687 \| fine	38.49 \| good	0.374 \| good	2.75 \| good	0.57 \| good
2025-06-04T20:00:00.000Z	94 \| moderate	31.877 \| fine	54.838 \| good	44.659 \| good	0.361 \| good	3.33 \| good	0.387 \| good
2025-06-04T21:00:00.000Z	121 \| sensitive	39.186 \| moderate	195.142 \| moderate	47.772 \| good	0.38 \| good	3.589 \| good	0.331 \| good
2025-06-04T22:00:00.000Z	86 \| moderate	28.034 \| fine	117.793 \| fine	50.373 \| good	0.397 \| good	3.42 \| good	0.331 \| good
2025-06-04T23:00:00.000Z	67 \| moderate	17.71 \| fine	70.283 \| fine	47.175 \| good	0.377 \| good	2.09 \| good	0.331 \| good
2025-06-05T00:00:00.000Z	69 \| moderate	18.885 \| fine	87.621 \| fine	45.552 \| good	0.27 \| good	2.775 \| good	0.354 \| good
2025-06-05T01:00:00.000Z	96 \| moderate	32.724 \| fine	105.755 \| fine	41.117 \| good	0.273 \| good	3.731 \| good	0.408 \| good
2025-06-05T02:00:00.000Z	97 \| moderate	34.297 \| fine	93.865 \| fine	36.18 \| good	0.352 \| good	14.19 \| good	0.512 \| good
2025-06-05T03:00:00.000Z	113 \| sensitive	33.396 \| fine	178.849 \| moderate	29.161 \| good	0.406 \| good	19.649 \| good	0.509 \| good
2025-06-05T04:00:00.000Z	77 \| moderate	22.86 \| fine	102.182 \| fine	31.198 \| good	0.392 \| good	31.206 \| good	0.539 \| good
2025-06-05T05:00:00.000Z	73 \| moderate	20.569 \| fine	72.65 \| fine	22.653 \| good	0.367 \| good	27.67 \| good	0.507 \| good
2025-06-05T06:00:00.000Z	105 \| sensitive	37.303 \| moderate	122.599 \| fine	25.424 \| good	0.324 \| good	25.15 \| good	0.507 \| good
2025-06-05T07:00:00.000Z	117 \| sensitive	42.015 \| moderate	177.155 \| moderate	15.102 \| good	0.431 \| good	19.203 \| good	0.476 \| good
2025-06-05T08:00:00.000Z	122 \| sensitive	43.919 \| moderate	171.237 \| moderate	7.963 \| good	0.45 \| good	17.373 \| good	0.462 \| good
2025-06-05T09:00:00.000Z	105 \| sensitive	37.433 \| moderate	147.425 \| fine	9.322 \| good	0.432 \| good	15.396 \| good	0.494 \| good
2025-06-05T10:00:00.000Z	110 \| sensitive	38.791 \| moderate	126.197 \| fine	9.595 \| good	0.396 \| good	14.466 \| good	0.474 \| good
2025-06-05T11:00:00.000Z	107 \| sensitive	37.829 \| moderate	168.038 \| moderate	19.242 \| good	0.356 \| good	15.239 \| good	0.548 \| good
2025-06-05T12:00:00.000Z	108 \| sensitive	36.557 \| moderate	169.625 \| moderate	13.608 \| good	0.31 \| good	16.01 \| good	0.542 \| good
2025-06-05T13:00:00.000Z	112 \| sensitive	40.434 \| moderate	167.74 \| moderate	15.879 \| good	0.422 \| good	7.859 \| good	0.479 \| good
2025-06-05T14:00:00.000Z	110 \| sensitive	38.939 \| moderate	159.397 \| moderate	21.267 \| good	0.336 \| good	3.942 \| good	0.403 \| good
2025-06-05T15:00:00.000Z	124 \| sensitive	45.014 \| moderate	201.959 \| moderate	29.227 \| good	0.294 \| good	3.441 \| good	0.39 \| good
2025-06-05T16:00:00.000Z	137 \| sensitive	50.035 \| moderate	180.944 \| moderate	33.786 \| good	0.651 \| good	3.483 \| good	0.39 \| good
2025-06-05T17:00:00.000Z	149 \| sensitive	55.229 \| moderate	220.641 \| moderate	40.708 \| good	2.334 \| good	2.796 \| good	0.371 \| good
2025-06-05T18:00:00.000Z	122 \| sensitive	44.402 \| moderate	128.458 \| fine	46.734 \| good	1.111 \| good	1.846 \| good	0.359 \| good
2025-06-05T19:00:00.000Z	133 \| sensitive	41.684 \| moderate	219.413 \| moderate	46.407 \| good	1.162 \| good	1.514 \| good	0.309 \| good
2025-06-05T20:00:00.000Z	129 \| sensitive	46.751 \| moderate	164.776 \| moderate	51.44 \| good	0.888 \| good	2.593 \| good	0.29 \| good
2025-06-05T21:00:00.000Z	154 \| unhealthy	59.869 \| poor	175.362 \| moderate	52.847 \| good	0.903 \| good	2.32 \| good	0.263 \| good
2025-06-05T22:00:00.000Z	122 \| sensitive	43.668 \| moderate	160.48 \| moderate	53.535 \| good	0.471 \| good	4.532 \| good	0.263 \| good
2025-06-05T23:00:00.000Z	122 \| sensitive	44.395 \| moderate	136.307 \| fine	58.596 \| fine	0.415 \| good	6.207 \| good	0.244 \| good
2025-06-06T00:00:00.000Z	142 \| sensitive	52.36 \| moderate	216.74 \| moderate	58.069 \| fine	0.775 \| good	5.329 \| good	0.259 \| good
2025-06-06T01:00:00.000Z	137 \| sensitive	49.371 \| moderate	227.622 \| moderate	50.204 \| good	1.102 \| good	6.371 \| good	0.259 \| good
2025-06-06T02:00:00.000Z	134 \| sensitive	49.34 \| moderate	185.541 \| moderate	50.312 \| good	1.767 \| good	6.344 \| good	0.275 \| good
2025-06-06T03:00:00.000Z	122 \| sensitive	43.909 \| moderate	187.696 \| moderate	43.94 \| good	1.865 \| good	8.585 \| good	0.287 \| good
2025-06-06T04:00:00.000Z	122 \| sensitive	43.734 \| moderate	144.944 \| fine	37.523 \| good	1.729 \| good	3.56 \| good	0.272 \| good
2025-06-06T05:00:00.000Z	137 \| sensitive	49.736 \| moderate	191.053 \| moderate	39.488 \| good	0.978 \| good	5.349 \| good	0.322 \| good
2025-06-06T06:00:00.000Z	137 \| sensitive	49.736 \| moderate	191.053 \| moderate	39.488 \| good	0.978 \| good	5.349 \| good	0.322 \| good
2025-06-06T07:00:00.000Z	111 \| sensitive	39.475 \| moderate	174.63 \| moderate	20.418 \| good	0.872 \| good	6.677 \| good	0.225 \| good
2025-06-06T08:00:00.000Z	100 \| moderate	35.338 \| fine	153.834 \| fine	17.593 \| good	0.944 \| good	6.675 \| good	0.224 \| good
2025-06-06T09:00:00.000Z	97 \| moderate	34.192 \| fine	147.391 \| fine	14.889 \| good	1.017 \| good	6.673 \| good	0.224 \| good
2025-06-06T10:00:00.000Z	94 \| moderate	32.389 \| fine	140.502 \| fine	14.584 \| good	0.928 \| good	6.25 \| good	0.224 \| good
2025-06-06T11:00:00.000Z	92 \| moderate	30.755 \| fine	133.177 \| fine	16.07 \| good	1.025 \| good	6.538 \| good	0.225 \| good
2025-06-06T12:00:00.000Z	82 \| moderate	26.027 \| fine	113.105 \| fine	19.777 \| good	1.122 \| good	6.827 \| good	0.225 \| good
2025-06-06T13:00:00.000Z	81 \| moderate	24.991 \| fine	109.143 \| fine	22.513 \| good	1.468 \| good	4.155 \| good	0.215 \| good
2025-06-06T14:00:00.000Z	77 \| moderate	22.844 \| fine	99.481 \| fine	28.755 \| good	1.589 \| good	4.62 \| good	0.217 \| good
2025-06-06T15:00:00.000Z	69 \| moderate	19.322 \| fine	85.313 \| fine	34.088 \| good	1.711 \| good	5.085 \| good	0.219 \| good
2025-06-06T16:00:00.000Z	67 \| moderate	17.952 \| fine	79.161 \| fine	39.806 \| good	0.872 \| good	1.671 \| good	0.176 \| good
2025-06-06T17:00:00.000Z	64 \| moderate	15.971 \| fine	71.607 \| fine	43.132 \| good	1.011 \| good	2.048 \| good	0.181 \| good
2025-06-06T18:00:00.000Z	62 \| moderate	15.414 \| fine	69.388 \| fine	45.06 \| good	1.151 \| good	2.425 \| good	0.185 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	15.455 \| fine	69.435 \| fine	45.348 \| good	0.826 \| good	1.436 \| good	0.166 \| good
2025-06-06T20:00:00.000Z	60 \| moderate	14.137 \| fine	63.703 \| fine	45.211 \| good	0.955 \| good	1.757 \| good	0.169 \| good
2025-06-06T21:00:00.000Z	56 \| moderate	11.576 \| good	51.532 \| good	45.506 \| good	1.085 \| good	2.079 \| good	0.173 \| good
2025-06-06T22:00:00.000Z	49 \| good	9.416 \| good	41.888 \| good	43.803 \| good	1.024 \| good	4.268 \| good	0.18 \| good
2025-06-06T23:00:00.000Z	58 \| moderate	12.571 \| fine	56.992 \| fine	42.883 \| good	1.184 \| good	5.018 \| good	0.186 \| good
2025-06-07T00:00:00.000Z	71 \| moderate	20.253 \| fine	89.203 \| fine	39.911 \| good	1.344 \| good	5.768 \| good	0.191 \| good
2025-06-07T01:00:00.000Z	71 \| moderate	20.265 \| fine	89.135 \| fine	37.399 \| good	1.334 \| good	11.397 \| good	0.224 \| good
2025-06-07T02:00:00.000Z	69 \| moderate	18.945 \| fine	83.047 \| fine	30.908 \| good	1.474 \| good	12.768 \| good	0.233 \| good
2025-06-07T03:00:00.000Z	66 \| moderate	17.058 \| fine	75.249 \| fine	22.081 \| good	1.615 \| good	14.138 \| good	0.242 \| good
2025-06-07T04:00:00.000Z	58 \| moderate	13.305 \| fine	60.327 \| fine	16.135 \| good	1.402 \| good	13.736 \| good	0.236 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	9.751 \| good	43.249 \| good	15.127 \| good	1.46 \| good	14.305 \| good	0.239 \| good
2025-06-07T06:00:00.000Z	44 \| good	7.644 \| good	33.941 \| good	14.164 \| good	1.517 \| good	14.873 \| good	0.242 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.157 \| good	31.99 \| good	13.835 \| good	1.199 \| good	10.461 \| good	0.203 \| good
2025-06-07T08:00:00.000Z	49 \| good	8.642 \| good	37.982 \| good	13.639 \| good	1.209 \| good	10.146 \| good	0.199 \| good
2025-06-07T09:00:00.000Z	52 \| moderate	10.399 \| good	46.032 \| good	12.108 \| good	1.22 \| good	9.83 \| good	0.195 \| good
2025-06-07T10:00:00.000Z	52 \| moderate	9.879 \| good	43.805 \| good	13.746 \| good	1.003 \| good	7.091 \| good	0.185 \| good
2025-06-07T11:00:00.000Z	52 \| moderate	10.163 \| good	44.776 \| good	17.239 \| good	1.068 \| good	7.316 \| good	0.186 \| good
2025-06-07T12:00:00.000Z	54 \| moderate	11.14 \| good	49.499 \| good	24.391 \| good	1.133 \| good	7.541 \| good	0.186 \| good
2025-06-07T13:00:00.000Z	60 \| moderate	13.722 \| fine	61.454 \| fine	29.263 \| good	1.948 \| good	4.958 \| good	0.212 \| good
2025-06-07T14:00:00.000Z	62 \| moderate	15.106 \| fine	67.257 \| fine	34.144 \| good	2.074 \| good	5.523 \| good	0.219 \| good
2025-06-07T15:00:00.000Z	58 \| moderate	12.662 \| fine	56.734 \| fine	34.938 \| good	2.199 \| good	6.089 \| good	0.227 \| good
2025-06-07T16:00:00.000Z	35 \| good	5.623 \| good	24.08 \| good	38.318 \| good	1.329 \| good	1.686 \| good	0.204 \| good
2025-06-07T17:00:00.000Z	40 \| good	5.225 \| good	22.385 \| good	43.134 \| good	1.398 \| good	1.989 \| good	0.207 \| good
2025-06-07T18:00:00.000Z	42 \| good	4.888 \| good	21.003 \| good	44.632 \| good	1.468 \| good	2.291 \| good	0.209 \| good
2025-06-07T19:00:00.000Z	38 \| good	5.307 \| good	22.934 \| good	40.702 \| good	1.328 \| good	1.673 \| good	0.2 \| good
2025-06-07T20:00:00.000Z	34 \| good	5.255 \| good	22.578 \| good	37.354 \| good	1.393 \| good	2.008 \| good	0.201 \| good
2025-06-07T21:00:00.000Z	33 \| good	6.097 \| good	26.585 \| good	34.74 \| good	1.459 \| good	2.342 \| good	0.202 \| good
2025-06-07T22:00:00.000Z	49 \| good	8.653 \| good	37.941 \| good	32.172 \| good	1.545 \| good	5.971 \| good	0.219 \| good
2025-06-07T23:00:00.000Z	54 \| moderate	10.694 \| good	47.716 \| good	31.732 \| good	1.609 \| good	6.927 \| good	0.221 \| good
2025-06-08T00:00:00.000Z	58 \| moderate	13.284 \| fine	60.49 \| fine	32.671 \| good	1.672 \| good	7.884 \| good	0.223 \| good
2025-06-08T01:00:00.000Z	52 \| moderate	9.728 \| good	43.204 \| good	32.733 \| good	1.724 \| good	9.436 \| good	0.212 \| good
2025-06-08T02:00:00.000Z	52 \| moderate	10.29 \| good	45.214 \| good	30.916 \| good	1.677 \| good	9.873 \| good	0.213 \| good
2025-06-08T03:00:00.000Z	49 \| good	8.982 \| good	40.251 \| good	31.507 \| good	1.63 \| good	10.311 \| good	0.214 \| good
2025-06-08T04:00:00.000Z	38 \| good	7.437 \| good	32.851 \| good	29.825 \| good	1.58 \| good	8.839 \| good	0.21 \| good
2025-06-08T05:00:00.000Z	38 \| good	7.455 \| good	32.914 \| good	30.656 \| good	1.531 \| good	8.91 \| good	0.21 \| good
2025-06-08T06:00:00.000Z	58 \| moderate	12.707 \| fine	13.188 \| good	38.109 \| good	1.465 \| good	8.954 \| good	0.21 \| good

Real-time 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)

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

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

Air quality in nearby cities

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Frequently asked questions

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

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

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

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

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?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

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

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

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?