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

The PM10 concentration in St. Charles, Illinois is 38.407 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 0.653 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 27.294 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 11.41 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 8.543 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)

8.54 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

38.41 μg/m³

155

255

425

605+

Ozone (O₃)

27.29 ppb

201

201+

Sulfur Dioxide (SO₂)

0.65 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.41 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 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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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
2026-03-08T05:00:00.000Z	27 \| good	5.046 \| good	19.5 \| good	21.514 \| good	0.308 \| good	3.193 \| good	0.149 \| good
2026-03-08T06:00:00.000Z	27 \| good	5.185 \| good	17.908 \| good	23.088 \| good	0.253 \| good	3.441 \| good	0.168 \| good
2026-03-08T07:00:00.000Z	27 \| good	5.377 \| good	22.171 \| good	23.526 \| good	0.28 \| good	3.536 \| good	0.158 \| good
2026-03-08T08:00:00.000Z	33 \| good	5.592 \| good	21.484 \| good	27.125 \| good	0.327 \| good	2.405 \| good	0.158 \| good
2026-03-08T09:00:00.000Z	33 \| good	5.768 \| good	25.418 \| good	25.417 \| good	0.278 \| good	2.511 \| good	0.145 \| good
2026-03-08T10:00:00.000Z	33 \| good	5.884 \| good	15.538 \| good	25.819 \| good	0.355 \| good	2.194 \| good	0.158 \| good
2026-03-08T11:00:00.000Z	33 \| good	6.499 \| good	28.291 \| good	26.65 \| good	0.498 \| good	1.936 \| good	0.158 \| good
2026-03-08T12:00:00.000Z	38 \| good	6.954 \| good	21.279 \| good	25.931 \| good	0.57 \| good	2.39 \| good	0.158 \| good
2026-03-08T13:00:00.000Z	38 \| good	7.048 \| good	31.663 \| good	25.346 \| good	0.617 \| good	2.161 \| good	0.158 \| good
2026-03-08T14:00:00.000Z	38 \| good	7.28 \| good	32.952 \| good	26.338 \| good	0.658 \| good	2.503 \| good	0.158 \| good
2026-03-08T15:00:00.000Z	38 \| good	6.813 \| good	27.665 \| good	27.397 \| good	0.837 \| good	2.11 \| good	0.158 \| good
2026-03-08T16:00:00.000Z	38 \| good	6.693 \| good	23.361 \| good	27.511 \| good	0.863 \| good	2.087 \| good	0.158 \| good
2026-03-08T17:00:00.000Z	38 \| good	6.713 \| good	30.289 \| good	30.442 \| good	0.863 \| good	2.346 \| good	0.194 \| good
2026-03-08T18:00:00.000Z	33 \| good	5.552 \| good	20.83 \| good	31.405 \| good	0.849 \| good	2.256 \| good	0.158 \| good
2026-03-08T19:00:00.000Z	32 \| good	4.99 \| good	17.393 \| good	35.09 \| good	0.958 \| good	2.393 \| good	0.158 \| good
2026-03-08T20:00:00.000Z	34 \| good	4.568 \| good	18.316 \| good	36.769 \| good	0.829 \| good	2.423 \| good	0.194 \| good
2026-03-08T21:00:00.000Z	34 \| good	4.425 \| good	16.429 \| good	36.932 \| good	0.854 \| good	1.919 \| good	0.194 \| good
2026-03-08T22:00:00.000Z	36 \| good	4.375 \| good	17.105 \| good	38.612 \| good	0.888 \| good	1.768 \| good	0.194 \| good
2026-03-08T23:00:00.000Z	37 \| good	3.718 \| good	14.421 \| good	39.558 \| good	0.744 \| good	4.489 \| good	0.196 \| good
2026-03-09T00:00:00.000Z	37 \| good	3.733 \| good	17.019 \| good	40.134 \| good	0.805 \| good	3.852 \| good	0.229 \| good
2026-03-09T01:00:00.000Z	38 \| good	3.293 \| good	15.526 \| good	41.082 \| good	0.643 \| good	3.288 \| good	0.194 \| good
2026-03-09T02:00:00.000Z	35 \| good	3.127 \| good	13.456 \| good	37.575 \| good	0.605 \| good	4.137 \| good	0.194 \| good
2026-03-09T03:00:00.000Z	32 \| good	1.126 \| good	4.929 \| good	35.414 \| good	0.633 \| good	3.412 \| good	0.153 \| good
2026-03-09T04:00:00.000Z	31 \| good	3.301 \| good	15.08 \| good	33.427 \| good	0.537 \| good	2.681 \| good	0.168 \| good
2026-03-09T05:00:00.000Z	32 \| good	3.42 \| good	16.112 \| good	34.584 \| good	0.541 \| good	3.009 \| good	0.158 \| good
2026-03-09T06:00:00.000Z	32 \| good	3.741 \| good	16.807 \| good	34.839 \| good	0.546 \| good	2.059 \| good	0.158 \| good
2026-03-09T07:00:00.000Z	31 \| good	3.61 \| good	16.47 \| good	34.035 \| good	0.561 \| good	2.31 \| good	0.158 \| good
2026-03-09T08:00:00.000Z	30 \| good	3.346 \| good	14.498 \| good	32.004 \| good	0.55 \| good	2.238 \| good	0.158 \| good
2026-03-09T09:00:00.000Z	31 \| good	3.372 \| good	11.139 \| good	33.42 \| good	0.565 \| good	2.356 \| good	0.158 \| good
2026-03-09T10:00:00.000Z	31 \| good	3.536 \| good	12.386 \| good	32.861 \| good	0.552 \| good	3.795 \| good	0.168 \| good
2026-03-09T11:00:00.000Z	28 \| good	3.607 \| good	12.632 \| good	30.119 \| good	0.538 \| good	5.37 \| good	0.194 \| good
2026-03-09T12:00:00.000Z	26 \| good	3.765 \| good	16.337 \| good	27.982 \| good	0.642 \| good	6.501 \| good	0.194 \| good
2026-03-09T13:00:00.000Z	23 \| good	3.693 \| good	14.11 \| good	25.235 \| good	0.614 \| good	6.728 \| good	0.194 \| good
2026-03-09T14:00:00.000Z	23 \| good	3.82 \| good	14.59 \| good	25.456 \| good	0.594 \| good	7.926 \| good	0.211 \| good
2026-03-09T15:00:00.000Z	27 \| good	3.938 \| good	20.995 \| good	29.4 \| good	0.686 \| good	5.507 \| good	0.159 \| good
2026-03-09T16:00:00.000Z	30 \| good	4.011 \| good	17.654 \| good	31.81 \| good	0.644 \| good	4.366 \| good	0.165 \| good
2026-03-09T17:00:00.000Z	26 \| good	4.009 \| good	16.613 \| good	27.789 \| good	0.829 \| good	4.444 \| good	0.149 \| good
2026-03-09T18:00:00.000Z	33 \| good	5.685 \| good	27.453 \| good	32.524 \| good	0.916 \| good	4.522 \| good	0.184 \| good
2026-03-09T19:00:00.000Z	36 \| good	5.074 \| good	25.767 \| good	38.795 \| good	0.816 \| good	3.991 \| good	0.2 \| good
2026-03-09T20:00:00.000Z	37 \| good	5.615 \| good	27.763 \| good	39.671 \| good	0.764 \| good	3.461 \| good	0.2 \| good
2026-03-09T21:00:00.000Z	41 \| good	5.291 \| good	29.681 \| good	44.177 \| good	0.764 \| good	3.485 \| good	0.27 \| good
2026-03-09T22:00:00.000Z	40 \| good	5.538 \| good	27.16 \| good	42.537 \| good	0.725 \| good	3.338 \| good	0.235 \| good
2026-03-09T23:00:00.000Z	39 \| good	6.005 \| good	27.57 \| good	42.196 \| good	0.691 \| good	4.095 \| good	0.245 \| good
2026-03-10T00:00:00.000Z	41 \| good	6.825 \| good	32.528 \| good	44.22 \| good	0.644 \| good	5.536 \| good	0.294 \| good
2026-03-10T01:00:00.000Z	38 \| good	7.272 \| good	32.151 \| good	31.888 \| good	0.677 \| good	11.75 \| good	0.311 \| good
2026-03-10T02:00:00.000Z	49 \| good	9.475 \| good	29.746 \| good	27.442 \| good	0.705 \| good	14.215 \| good	0.322 \| good
2026-03-10T03:00:00.000Z	20 \| good	3.274 \| good	14.287 \| good	22.437 \| good	1.204 \| good	12.366 \| good	0.218 \| good
2026-03-10T04:00:00.000Z	49 \| good	8.543 \| good	38.407 \| good	27.294 \| good	0.653 \| good	11.41 \| good	0.304 \| good
2026-03-10T04:00:00.000Z	49 \| good	8.543 \| good	38.407 \| good	27.294 \| good	0.653 \| good	11.41 \| good	0.304 \| good
2026-03-10T05:00:00.000Z	27 \| good	4.61 \| good	20.097 \| good	25.063 \| good	1.176 \| good	12.482 \| good	0.222 \| good
2026-03-10T06:00:00.000Z	27 \| good	5.215 \| good	22.854 \| good	24.737 \| good	0.981 \| good	7.858 \| good	0.191 \| good
2026-03-10T07:00:00.000Z	49 \| good	9.449 \| good	41.941 \| good	21.736 \| good	0.914 \| good	6.555 \| good	0.179 \| good
2026-03-10T08:00:00.000Z	54 \| moderate	10.936 \| good	48.054 \| good	19.475 \| good	0.848 \| good	5.253 \| good	0.166 \| good
2026-03-10T09:00:00.000Z	54 \| moderate	10.841 \| good	47.819 \| good	17.789 \| good	0.781 \| good	3.95 \| good	0.154 \| good
2026-03-10T10:00:00.000Z	44 \| good	7.931 \| good	34.371 \| good	15.098 \| good	0.741 \| good	4.082 \| good	0.154 \| good
2026-03-10T11:00:00.000Z	52 \| moderate	9.803 \| good	43.864 \| good	10.843 \| good	0.701 \| good	4.214 \| good	0.153 \| good
2026-03-10T12:00:00.000Z	52 \| moderate	10.457 \| good	46.614 \| good	6.286 \| good	0.66 \| good	4.345 \| good	0.153 \| good
2026-03-10T13:00:00.000Z	49 \| good	8.707 \| good	38.525 \| good	12.635 \| good	0.678 \| good	4.696 \| good	0.159 \| good
2026-03-10T14:00:00.000Z	38 \| good	7.438 \| good	32.569 \| good	22.978 \| good	0.696 \| good	5.046 \| good	0.165 \| good
2026-03-10T15:00:00.000Z	33 \| good	6.238 \| good	27.625 \| good	14.454 \| good	0.714 \| good	5.397 \| good	0.17 \| good
2026-03-10T16:00:00.000Z	44 \| good	7.512 \| good	33.001 \| good	16.434 \| good	0.707 \| good	4.627 \| good	0.165 \| good
2026-03-10T17:00:00.000Z	49 \| good	8.503 \| good	37.067 \| good	17.529 \| good	0.7 \| good	3.856 \| good	0.159 \| good
2026-03-10T18:00:00.000Z	52 \| moderate	10.208 \| good	45.376 \| good	37.53 \| good	0.693 \| good	3.086 \| good	0.154 \| good
2026-03-10T19:00:00.000Z	54 \| moderate	11.238 \| good	49.506 \| good	39.455 \| good	0.869 \| good	4.267 \| good	0.161 \| good
2026-03-10T20:00:00.000Z	58 \| moderate	13.18 \| fine	59.502 \| fine	40.551 \| good	1.045 \| good	5.448 \| good	0.167 \| good
2026-03-10T21:00:00.000Z	58 \| moderate	12.964 \| fine	57.639 \| fine	39.225 \| good	1.221 \| good	6.629 \| good	0.174 \| good
2026-03-10T22:00:00.000Z	52 \| moderate	9.857 \| good	43.556 \| good	36.994 \| good	1.191 \| good	9.882 \| good	0.197 \| good
2026-03-10T23:00:00.000Z	32 \| good	5.365 \| good	23.104 \| good	35.033 \| good	1.16 \| good	13.136 \| good	0.22 \| good
2026-03-11T00:00:00.000Z	33 \| good	5.849 \| good	25.301 \| good	21.991 \| good	1.129 \| good	16.39 \| good	0.243 \| good
2026-03-11T01:00:00.000Z	23 \| good	4.217 \| good	18.348 \| good	25.155 \| good	1.184 \| good	18.156 \| good	0.252 \| good
2026-03-11T02:00:00.000Z	38 \| good	6.995 \| good	31.132 \| good	31.029 \| good	1.238 \| good	19.923 \| good	0.262 \| good
2026-03-11T03:00:00.000Z	44 \| good	7.646 \| good	33.866 \| good	29.308 \| good	1.292 \| good	21.689 \| good	0.271 \| good
2026-03-11T04:00:00.000Z	33 \| good	6.233 \| good	27.963 \| good	29.287 \| good	1.255 \| good	20.786 \| good	0.269 \| good
2026-03-11T05:00:00.000Z	33 \| good	6.356 \| good	28.025 \| good	30.09 \| good	1.218 \| good	19.883 \| good	0.266 \| good
2026-03-11T06:00:00.000Z	44 \| good	8.182 \| good	8.224 \| good	10.843 \| good	1.17 \| good	18.811 \| good	0.261 \| good
2026-03-11T07:00:00.000Z	38 \| good	7.384 \| good	32.384 \| good	28.906 \| good	1.053 \| good	16.273 \| good	0.241 \| good
2026-03-11T08:00:00.000Z	33 \| good	6.241 \| good	27.337 \| good	24.591 \| good	0.924 \| good	13.567 \| good	0.219 \| good
2026-03-11T09:00:00.000Z	27 \| good	4.74 \| good	20.377 \| good	26.913 \| good	0.796 \| good	10.861 \| good	0.196 \| good
2026-03-11T10:00:00.000Z	27 \| good	5.365 \| good	23.195 \| good	27.178 \| good	0.75 \| good	8.69 \| good	0.187 \| good
2026-03-11T11:00:00.000Z	27 \| good	4.606 \| good	20.127 \| good	29.362 \| good	0.704 \| good	6.519 \| good	0.177 \| good
2026-03-11T12:00:00.000Z	22 \| good	4.045 \| good	4.055 \| good	23.768 \| good	0.663 \| good	4.404 \| good	0.168 \| good
2026-03-11T13:00:00.000Z	23 \| good	3.359 \| good	3.366 \| good	25.021 \| good	0.656 \| good	4.595 \| good	0.171 \| good
2026-03-11T14:00:00.000Z	24 \| good	3.22 \| good	3.223 \| good	26.274 \| good	0.648 \| good	4.785 \| good	0.175 \| good
2026-03-11T15:00:00.000Z	26 \| good	2.788 \| good	2.79 \| good	27.527 \| good	0.641 \| good	4.976 \| good	0.178 \| good
2026-03-11T16:00:00.000Z	27 \| good	2.407 \| good	2.418 \| good	29.142 \| good	0.618 \| good	4.346 \| good	0.175 \| good
2026-03-11T17:00:00.000Z	25 \| good	2.49 \| good	10 \| good	27.194 \| good	0.592 \| good	3.696 \| good	0.171 \| good
2026-03-11T18:00:00.000Z	30 \| good	1.65 \| good	1.657 \| good	32.371 \| good	0.571 \| good	3.086 \| good	0.167 \| good
2026-03-11T19:00:00.000Z	31 \| good	1.45 \| good	1.461 \| good	33.257 \| good	0.525 \| good	3.023 \| good	0.166 \| good
2026-03-11T20:00:00.000Z	31 \| good	2.322 \| good	2.455 \| good	34.142 \| good	0.479 \| good	2.96 \| good	0.164 \| good
2026-03-11T21:00:00.000Z	32 \| good	2.622 \| good	2.882 \| good	35.028 \| good	0.433 \| good	2.897 \| good	0.162 \| good
2026-03-11T22:00:00.000Z	31 \| good	1.675 \| good	1.779 \| good	33.397 \| good	0.475 \| good	4.018 \| good	0.169 \| good
2026-03-11T23:00:00.000Z	30 \| good	2.135 \| good	2.188 \| good	31.766 \| good	0.516 \| good	5.139 \| good	0.175 \| good
2026-03-12T00:00:00.000Z	28 \| good	2.931 \| good	2.988 \| good	30.135 \| good	0.558 \| good	6.261 \| good	0.182 \| good
2026-03-12T01:00:00.000Z	29 \| good	2.665 \| good	2.74 \| good	30.571 \| good	0.598 \| good	5.774 \| good	0.177 \| good
2026-03-12T02:00:00.000Z	29 \| good	2.602 \| good	2.679 \| good	31.006 \| good	0.638 \| good	5.287 \| good	0.173 \| good
2026-03-12T03:00:00.000Z	29 \| good	2.827 \| good	2.896 \| good	31.442 \| good	0.678 \| good	4.8 \| good	0.168 \| good
2026-03-12T04:00:00.000Z	28 \| good	3.303 \| good	3.373 \| good	29.951 \| good	0.678 \| good	5.169 \| good	0.171 \| good

St. Charles

Get reliable air quality data to drive your business

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

0.21ppm

How accurate is Illinois, USA air quality data?

Air quality and pollutant data for Illinois, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for 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 02:00:00 on 2026-03-10.

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 03:00:00 on 2026-03-10.

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

As of now, the AQI in St. Charles, Illinois is 49, indicating Good 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 8.543 μg/m³.

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

The PM₁₀ concentration in St. Charles, Illinois is 38.407 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 0.304 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 0.653 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 27.294 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 11.41 ppb.

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