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

The PM10 concentration in St. Charles, Illinois is 29.479 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 0.542 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 14.465 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 5.48 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 6.801 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)

6.80 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

29.48 μg/m³

155

255

425

605+

Ozone (O₃)

14.46 ppb

201

201+

Sulfur Dioxide (SO₂)

0.54 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.48 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.33 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
2026-09-05T13:00:00.000Z	44 \| good	8.232 \| good	36.722 \| good	24.861 \| good	0.39 \| good	6.416 \| good	0.14 \| good
2026-09-05T14:00:00.000Z	33 \| good	5.751 \| good	30.063 \| good	24.983 \| good	0.328 \| good	2.805 \| good	0.175 \| good
2026-09-05T15:00:00.000Z	33 \| good	5.819 \| good	26.634 \| good	28.128 \| good	0.291 \| good	2.18 \| good	0.175 \| good
2026-09-05T16:00:00.000Z	33 \| good	6.464 \| good	28.804 \| good	31.435 \| good	0.302 \| good	2.889 \| good	0.2 \| good
2026-09-05T17:00:00.000Z	38 \| good	6.782 \| good	24.921 \| good	34.357 \| good	0.301 \| good	2.003 \| good	0.183 \| good
2026-09-05T18:00:00.000Z	34 \| good	5.976 \| good	26.151 \| good	37.411 \| good	0.343 \| good	1.857 \| good	0.2 \| good
2026-09-05T19:00:00.000Z	44 \| good	7.624 \| good	22.19 \| good	44.591 \| good	0.262 \| good	1.966 \| good	0.197 \| good
2026-09-05T20:00:00.000Z	44 \| good	7.748 \| good	34.078 \| good	42.139 \| good	0.301 \| good	2.138 \| good	0.209 \| good
2026-09-05T21:00:00.000Z	38 \| good	7.13 \| good	30.265 \| good	40.939 \| good	0.302 \| good	2.158 \| good	0.182 \| good
2026-09-05T22:00:00.000Z	44 \| good	8.14 \| good	27.204 \| good	38.021 \| good	0.301 \| good	2.53 \| good	0.213 \| good
2026-09-05T23:00:00.000Z	39 \| good	6.611 \| good	29.215 \| good	42.167 \| good	0.351 \| good	2.45 \| good	0.194 \| good
2026-09-06T00:00:00.000Z	44 \| good	7.954 \| good	28.699 \| good	38.724 \| good	0.329 \| good	2.533 \| good	0.226 \| good
2026-09-06T01:00:00.000Z	38 \| good	7.485 \| good	33.894 \| good	36.248 \| good	0.341 \| good	2.967 \| good	0.194 \| good
2026-09-06T02:00:00.000Z	38 \| good	6.933 \| good	27.993 \| good	34.644 \| good	0.465 \| good	6.209 \| good	0.213 \| good
2026-09-06T03:00:00.000Z	49 \| good	9.09 \| good	41.103 \| good	25.201 \| good	0.551 \| good	5.078 \| good	0.166 \| good
2026-09-06T04:00:00.000Z	33 \| good	6.452 \| good	26.875 \| good	31.956 \| good	0.324 \| good	4.236 \| good	0.213 \| good
2026-09-06T05:00:00.000Z	33 \| good	6.248 \| good	30.78 \| good	31.884 \| good	0.357 \| good	4.325 \| good	0.213 \| good
2026-09-06T06:00:00.000Z	33 \| good	5.937 \| good	28.399 \| good	25.74 \| good	0.488 \| good	4.021 \| good	0.226 \| good
2026-09-06T07:00:00.000Z	33 \| good	5.556 \| good	21.972 \| good	23.716 \| good	0.387 \| good	4.019 \| good	0.226 \| good
2026-09-06T08:00:00.000Z	33 \| good	5.652 \| good	23.96 \| good	23.485 \| good	0.379 \| good	2.868 \| good	0.194 \| good
2026-09-06T09:00:00.000Z	33 \| good	5.776 \| good	21.788 \| good	24.839 \| good	0.337 \| good	3.198 \| good	0.194 \| good
2026-09-06T10:00:00.000Z	33 \| good	5.848 \| good	24.01 \| good	18.92 \| good	0.301 \| good	3.294 \| good	0.194 \| good
2026-09-06T11:00:00.000Z	27 \| good	5.216 \| good	19.695 \| good	19.204 \| good	0.301 \| good	3.746 \| good	0.197 \| good
2026-09-06T12:00:00.000Z	33 \| good	5.577 \| good	22.237 \| good	20.052 \| good	0.622 \| good	2.663 \| good	0.162 \| good
2026-09-06T13:00:00.000Z	33 \| good	6.177 \| good	25.943 \| good	20.003 \| good	0.448 \| good	2.262 \| good	0.162 \| good
2026-09-06T14:00:00.000Z	44 \| good	7.526 \| good	29.394 \| good	17.882 \| good	0.737 \| good	2.357 \| good	0.15 \| good
2026-09-06T15:00:00.000Z	49 \| good	8.65 \| good	28.12 \| good	19.403 \| good	1.433 \| good	1.345 \| good	0.15 \| good
2026-09-06T16:00:00.000Z	44 \| good	8.411 \| good	27.519 \| good	22.107 \| good	2.246 \| good	1.149 \| good	0.15 \| good
2026-09-06T17:00:00.000Z	44 \| good	7.596 \| good	27.938 \| good	26.015 \| good	0.708 \| good	1.286 \| good	0.15 \| good
2026-09-06T18:00:00.000Z	49 \| good	8.879 \| good	29.689 \| good	27.552 \| good	1.951 \| good	1.111 \| good	0.182 \| good
2026-09-06T19:00:00.000Z	38 \| good	6.884 \| good	30.329 \| good	31.592 \| good	2.068 \| good	1.299 \| good	0.182 \| good
2026-09-06T20:00:00.000Z	44 \| good	7.868 \| good	28.433 \| good	33.166 \| good	1.203 \| good	1.111 \| good	0.182 \| good
2026-09-06T21:00:00.000Z	33 \| good	5.798 \| good	23.265 \| good	35.976 \| good	5.782 \| good	1.195 \| good	0.182 \| good
2026-09-06T22:00:00.000Z	29 \| good	5.322 \| good	25.99 \| good	30.785 \| good	6.127 \| good	1.188 \| good	0.182 \| good
2026-09-06T23:00:00.000Z	31 \| good	5.199 \| good	16.485 \| good	33.078 \| good	2.521 \| good	1.74 \| good	0.226 \| good
2026-09-07T00:00:00.000Z	33 \| good	5.713 \| good	19.269 \| good	31.689 \| good	1.277 \| good	2.414 \| good	0.213 \| good
2026-09-07T01:00:00.000Z	33 \| good	5.965 \| good	21.739 \| good	29.22 \| good	0.537 \| good	2.997 \| good	0.226 \| good
2026-09-07T02:00:00.000Z	33 \| good	5.552 \| good	23.919 \| good	32.676 \| good	0.492 \| good	3.839 \| good	0.226 \| good
2026-09-07T03:00:00.000Z	58 \| moderate	12.831 \| fine	57.286 \| fine	17.321 \| good	0.68 \| good	7.794 \| good	0.179 \| good
2026-09-07T04:00:00.000Z	38 \| good	7.006 \| good	25.981 \| good	24.258 \| good	0.56 \| good	5.52 \| good	0.257 \| good
2026-09-07T05:00:00.000Z	33 \| good	5.678 \| good	22.02 \| good	24.72 \| good	0.376 \| good	4.802 \| good	0.226 \| good
2026-09-07T06:00:00.000Z	38 \| good	6.643 \| good	23.801 \| good	20.184 \| good	0.307 \| good	3.564 \| good	0.25 \| good
2026-09-07T07:00:00.000Z	27 \| good	5.378 \| good	25.183 \| good	18.915 \| good	0.307 \| good	6.308 \| good	0.238 \| good
2026-09-07T08:00:00.000Z	33 \| good	5.847 \| good	21.764 \| good	20.921 \| good	0.474 \| good	9.417 \| good	0.238 \| good
2026-09-07T09:00:00.000Z	33 \| good	5.886 \| good	25.532 \| good	19.269 \| good	0.768 \| good	4.801 \| good	0.213 \| good
2026-09-07T10:00:00.000Z	27 \| good	5.021 \| good	25.726 \| good	19.428 \| good	1.646 \| good	5.44 \| good	0.226 \| good
2026-09-07T11:00:00.000Z	38 \| good	6.766 \| good	27.825 \| good	15.161 \| good	0.79 \| good	5.997 \| good	0.245 \| good
2026-09-07T12:00:00.000Z	38 \| good	6.801 \| good	29.479 \| good	14.465 \| good	0.542 \| good	5.48 \| good	0.333 \| good
2026-09-07T12:00:00.000Z	38 \| good	6.801 \| good	29.479 \| good	14.465 \| good	0.542 \| good	5.48 \| good	0.333 \| good
2026-09-07T13:00:00.000Z	64 \| moderate	15.864 \| fine	70.62 \| fine	12.321 \| good	1.033 \| good	7.456 \| good	0.186 \| good
2026-09-07T14:00:00.000Z	58 \| moderate	13.181 \| fine	59.06 \| fine	23.039 \| good	1.679 \| good	5.999 \| good	0.181 \| good
2026-09-07T15:00:00.000Z	56 \| moderate	11.974 \| good	53.769 \| good	32.143 \| good	1.992 \| good	4.828 \| good	0.179 \| good
2026-09-07T16:00:00.000Z	52 \| moderate	10.48 \| good	46.197 \| good	39.321 \| good	1.827 \| good	3.043 \| good	0.169 \| good
2026-09-07T17:00:00.000Z	54 \| moderate	10.848 \| good	48.025 \| good	46.15 \| good	1.579 \| good	2.003 \| good	0.164 \| good
2026-09-07T18:00:00.000Z	60 \| moderate	13.741 \| fine	61.501 \| fine	52.325 \| good	1.441 \| good	1.504 \| good	0.162 \| good
2026-09-07T19:00:00.000Z	62 \| moderate	14.842 \| fine	67.03 \| fine	56.612 \| fine	1.363 \| good	1.275 \| good	0.161 \| good
2026-09-07T20:00:00.000Z	62 \| moderate	15.397 \| fine	68.864 \| fine	58.215 \| fine	1.338 \| good	1.251 \| good	0.161 \| good
2026-09-07T21:00:00.000Z	64 \| moderate	16.141 \| fine	71.497 \| fine	51.92 \| good	1.34 \| good	1.406 \| good	0.161 \| good
2026-09-07T22:00:00.000Z	66 \| moderate	17.34 \| fine	77.216 \| fine	43.394 \| good	1.364 \| good	1.805 \| good	0.162 \| good
2026-09-07T23:00:00.000Z	67 \| moderate	17.967 \| fine	79.287 \| fine	38.367 \| good	1.363 \| good	2.827 \| good	0.168 \| good
2026-09-08T00:00:00.000Z	69 \| moderate	19.383 \| fine	85.028 \| fine	30.726 \| good	1.361 \| good	5.213 \| good	0.18 \| good
2026-09-08T01:00:00.000Z	66 \| moderate	16.73 \| fine	74.557 \| fine	25.002 \| good	1.407 \| good	7.984 \| good	0.194 \| good
2026-09-08T02:00:00.000Z	60 \| moderate	14.003 \| fine	62.796 \| fine	19.689 \| good	1.454 \| good	9.731 \| good	0.198 \| good
2026-09-08T03:00:00.000Z	60 \| moderate	13.528 \| fine	60.855 \| fine	16.419 \| good	1.516 \| good	11.003 \| good	0.2 \| good
2026-09-08T04:00:00.000Z	60 \| moderate	14.445 \| fine	64.964 \| fine	12.948 \| good	1.608 \| good	12.049 \| good	0.201 \| good
2026-09-08T05:00:00.000Z	58 \| moderate	13.368 \| fine	60.312 \| fine	14.086 \| good	1.698 \| good	12.668 \| good	0.203 \| good
2026-09-08T06:00:00.000Z	56 \| moderate	11.867 \| good	53.381 \| good	15.541 \| good	1.755 \| good	12.737 \| good	0.204 \| good
2026-09-08T07:00:00.000Z	54 \| moderate	11.284 \| good	49.875 \| good	14.5 \| good	1.825 \| good	11.96 \| good	0.199 \| good
2026-09-08T08:00:00.000Z	56 \| moderate	12.365 \| fine	55.301 \| fine	13.936 \| good	1.871 \| good	10.859 \| good	0.193 \| good
2026-09-08T09:00:00.000Z	56 \| moderate	12.386 \| fine	55.301 \| fine	13.482 \| good	1.858 \| good	10.195 \| good	0.19 \| good
2026-09-08T10:00:00.000Z	64 \| moderate	16.082 \| fine	71.461 \| fine	11.68 \| good	1.806 \| good	10.061 \| good	0.19 \| good
2026-09-08T11:00:00.000Z	64 \| moderate	16.177 \| fine	71.588 \| fine	10.267 \| good	1.747 \| good	10.365 \| good	0.192 \| good
2026-09-08T12:00:00.000Z	66 \| moderate	16.809 \| fine	74.811 \| fine	8.976 \| good	1.679 \| good	11.097 \| good	0.199 \| good
2026-09-08T13:00:00.000Z	64 \| moderate	15.805 \| fine	70.757 \| fine	14.481 \| good	1.582 \| good	10.462 \| good	0.215 \| good
2026-09-08T14:00:00.000Z	62 \| moderate	15.213 \| fine	67.466 \| fine	19.898 \| good	1.634 \| good	8.358 \| good	0.212 \| good
2026-09-08T15:00:00.000Z	64 \| moderate	16.167 \| fine	71.468 \| fine	26.838 \| good	1.568 \| good	6.966 \| good	0.21 \| good
2026-09-08T16:00:00.000Z	66 \| moderate	16.523 \| fine	73.282 \| fine	39.102 \| good	1.444 \| good	5.387 \| good	0.206 \| good
2026-09-08T17:00:00.000Z	62 \| moderate	14.605 \| fine	65.282 \| fine	50.661 \| good	1.249 \| good	3.171 \| good	0.195 \| good
2026-09-08T18:00:00.000Z	58 \| moderate	13.234 \| fine	59.282 \| fine	54.476 \| good	1.084 \| good	1.827 \| good	0.186 \| good
2026-09-08T19:00:00.000Z	60 \| moderate	14.372 \| fine	64.882 \| fine	53.595 \| good	0.983 \| good	1.406 \| good	0.182 \| good
2026-09-08T20:00:00.000Z	62 \| moderate	15.02 \| fine	67.354 \| fine	51.3 \| good	0.917 \| good	1.32 \| good	0.179 \| good
2026-09-08T21:00:00.000Z	62 \| moderate	14.917 \| fine	66.948 \| fine	47.373 \| good	0.883 \| good	1.399 \| good	0.178 \| good
2026-09-08T22:00:00.000Z	62 \| moderate	15.061 \| fine	67.24 \| fine	39.688 \| good	0.884 \| good	1.732 \| good	0.18 \| good
2026-09-08T23:00:00.000Z	64 \| moderate	15.653 \| fine	69.15 \| fine	32.536 \| good	0.903 \| good	2.848 \| good	0.188 \| good
2026-09-09T00:00:00.000Z	64 \| moderate	16.349 \| fine	73.078 \| fine	34.832 \| good	0.954 \| good	5.232 \| good	0.202 \| good
2026-09-09T01:00:00.000Z	62 \| moderate	15.083 \| fine	67.144 \| fine	37.651 \| good	1.013 \| good	7.081 \| good	0.211 \| good
2026-09-09T02:00:00.000Z	60 \| moderate	13.652 \| fine	61.054 \| fine	37.147 \| good	1.009 \| good	7.951 \| good	0.215 \| good
2026-09-09T03:00:00.000Z	58 \| moderate	12.844 \| fine	57.466 \| fine	34.88 \| good	0.955 \| good	8.084 \| good	0.215 \| good
2026-09-09T04:00:00.000Z	56 \| moderate	12.22 \| fine	55.001 \| fine	31.078 \| good	0.877 \| good	7.725 \| good	0.214 \| good
2026-09-09T05:00:00.000Z	56 \| moderate	11.974 \| good	53.901 \| good	28.208 \| good	0.805 \| good	6.83 \| good	0.211 \| good
2026-09-09T06:00:00.000Z	58 \| moderate	12.754 \| fine	57.269 \| fine	25.131 \| good	0.77 \| good	5.881 \| good	0.207 \| good
2026-09-09T07:00:00.000Z	60 \| moderate	14.058 \| fine	63.164 \| fine	24.266 \| good	0.781 \| good	5.394 \| good	0.203 \| good
2026-09-09T08:00:00.000Z	60 \| moderate	14.475 \| fine	64.998 \| fine	20.456 \| good	0.813 \| good	5.087 \| good	0.2 \| good
2026-09-09T09:00:00.000Z	60 \| moderate	13.514 \| fine	61.124 \| fine	19.825 \| good	0.869 \| good	4.694 \| good	0.198 \| good
2026-09-09T10:00:00.000Z	64 \| moderate	16.136 \| fine	71.492 \| fine	20.052 \| good	0.843 \| good	4.612 \| good	0.196 \| good
2026-09-09T11:00:00.000Z	62 \| moderate	15.042 \| fine	67.288 \| fine	18.169 \| good	0.78 \| good	4.383 \| good	0.193 \| good
2026-09-09T12:00:00.000Z	38 \| good	7.258 \| good	7.563 \| good	41.186 \| good	0.69 \| good	4.49 \| good	0.19 \| good

St. Charles

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

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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 2026-09-07.

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 10:00:00 on 2026-09-07.

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

As of now, the AQI in St. Charles, Illinois is 38, 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 6.801 μg/m³.

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

The PM₁₀ concentration in St. Charles, Illinois is 29.479 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 0.333 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 0.542 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 14.465 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 5.48 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-05T13:00:00.000Z	44 \| good	8.232 \| good	36.722 \| good	24.861 \| good	0.39 \| good	6.416 \| good	0.14 \| good
2026-09-05T14:00:00.000Z	33 \| good	5.751 \| good	30.063 \| good	24.983 \| good	0.328 \| good	2.805 \| good	0.175 \| good
2026-09-05T15:00:00.000Z	33 \| good	5.819 \| good	26.634 \| good	28.128 \| good	0.291 \| good	2.18 \| good	0.175 \| good
2026-09-05T16:00:00.000Z	33 \| good	6.464 \| good	28.804 \| good	31.435 \| good	0.302 \| good	2.889 \| good	0.2 \| good
2026-09-05T17:00:00.000Z	38 \| good	6.782 \| good	24.921 \| good	34.357 \| good	0.301 \| good	2.003 \| good	0.183 \| good
2026-09-05T18:00:00.000Z	34 \| good	5.976 \| good	26.151 \| good	37.411 \| good	0.343 \| good	1.857 \| good	0.2 \| good
2026-09-05T19:00:00.000Z	44 \| good	7.624 \| good	22.19 \| good	44.591 \| good	0.262 \| good	1.966 \| good	0.197 \| good
2026-09-05T20:00:00.000Z	44 \| good	7.748 \| good	34.078 \| good	42.139 \| good	0.301 \| good	2.138 \| good	0.209 \| good
2026-09-05T21:00:00.000Z	38 \| good	7.13 \| good	30.265 \| good	40.939 \| good	0.302 \| good	2.158 \| good	0.182 \| good
2026-09-05T22:00:00.000Z	44 \| good	8.14 \| good	27.204 \| good	38.021 \| good	0.301 \| good	2.53 \| good	0.213 \| good
2026-09-05T23:00:00.000Z	39 \| good	6.611 \| good	29.215 \| good	42.167 \| good	0.351 \| good	2.45 \| good	0.194 \| good
2026-09-06T00:00:00.000Z	44 \| good	7.954 \| good	28.699 \| good	38.724 \| good	0.329 \| good	2.533 \| good	0.226 \| good
2026-09-06T01:00:00.000Z	38 \| good	7.485 \| good	33.894 \| good	36.248 \| good	0.341 \| good	2.967 \| good	0.194 \| good
2026-09-06T02:00:00.000Z	38 \| good	6.933 \| good	27.993 \| good	34.644 \| good	0.465 \| good	6.209 \| good	0.213 \| good
2026-09-06T03:00:00.000Z	49 \| good	9.09 \| good	41.103 \| good	25.201 \| good	0.551 \| good	5.078 \| good	0.166 \| good
2026-09-06T04:00:00.000Z	33 \| good	6.452 \| good	26.875 \| good	31.956 \| good	0.324 \| good	4.236 \| good	0.213 \| good
2026-09-06T05:00:00.000Z	33 \| good	6.248 \| good	30.78 \| good	31.884 \| good	0.357 \| good	4.325 \| good	0.213 \| good
2026-09-06T06:00:00.000Z	33 \| good	5.937 \| good	28.399 \| good	25.74 \| good	0.488 \| good	4.021 \| good	0.226 \| good
2026-09-06T07:00:00.000Z	33 \| good	5.556 \| good	21.972 \| good	23.716 \| good	0.387 \| good	4.019 \| good	0.226 \| good
2026-09-06T08:00:00.000Z	33 \| good	5.652 \| good	23.96 \| good	23.485 \| good	0.379 \| good	2.868 \| good	0.194 \| good
2026-09-06T09:00:00.000Z	33 \| good	5.776 \| good	21.788 \| good	24.839 \| good	0.337 \| good	3.198 \| good	0.194 \| good
2026-09-06T10:00:00.000Z	33 \| good	5.848 \| good	24.01 \| good	18.92 \| good	0.301 \| good	3.294 \| good	0.194 \| good
2026-09-06T11:00:00.000Z	27 \| good	5.216 \| good	19.695 \| good	19.204 \| good	0.301 \| good	3.746 \| good	0.197 \| good
2026-09-06T12:00:00.000Z	33 \| good	5.577 \| good	22.237 \| good	20.052 \| good	0.622 \| good	2.663 \| good	0.162 \| good
2026-09-06T13:00:00.000Z	33 \| good	6.177 \| good	25.943 \| good	20.003 \| good	0.448 \| good	2.262 \| good	0.162 \| good
2026-09-06T14:00:00.000Z	44 \| good	7.526 \| good	29.394 \| good	17.882 \| good	0.737 \| good	2.357 \| good	0.15 \| good
2026-09-06T15:00:00.000Z	49 \| good	8.65 \| good	28.12 \| good	19.403 \| good	1.433 \| good	1.345 \| good	0.15 \| good
2026-09-06T16:00:00.000Z	44 \| good	8.411 \| good	27.519 \| good	22.107 \| good	2.246 \| good	1.149 \| good	0.15 \| good
2026-09-06T17:00:00.000Z	44 \| good	7.596 \| good	27.938 \| good	26.015 \| good	0.708 \| good	1.286 \| good	0.15 \| good
2026-09-06T18:00:00.000Z	49 \| good	8.879 \| good	29.689 \| good	27.552 \| good	1.951 \| good	1.111 \| good	0.182 \| good
2026-09-06T19:00:00.000Z	38 \| good	6.884 \| good	30.329 \| good	31.592 \| good	2.068 \| good	1.299 \| good	0.182 \| good
2026-09-06T20:00:00.000Z	44 \| good	7.868 \| good	28.433 \| good	33.166 \| good	1.203 \| good	1.111 \| good	0.182 \| good
2026-09-06T21:00:00.000Z	33 \| good	5.798 \| good	23.265 \| good	35.976 \| good	5.782 \| good	1.195 \| good	0.182 \| good
2026-09-06T22:00:00.000Z	29 \| good	5.322 \| good	25.99 \| good	30.785 \| good	6.127 \| good	1.188 \| good	0.182 \| good
2026-09-06T23:00:00.000Z	31 \| good	5.199 \| good	16.485 \| good	33.078 \| good	2.521 \| good	1.74 \| good	0.226 \| good
2026-09-07T00:00:00.000Z	33 \| good	5.713 \| good	19.269 \| good	31.689 \| good	1.277 \| good	2.414 \| good	0.213 \| good
2026-09-07T01:00:00.000Z	33 \| good	5.965 \| good	21.739 \| good	29.22 \| good	0.537 \| good	2.997 \| good	0.226 \| good
2026-09-07T02:00:00.000Z	33 \| good	5.552 \| good	23.919 \| good	32.676 \| good	0.492 \| good	3.839 \| good	0.226 \| good
2026-09-07T03:00:00.000Z	58 \| moderate	12.831 \| fine	57.286 \| fine	17.321 \| good	0.68 \| good	7.794 \| good	0.179 \| good
2026-09-07T04:00:00.000Z	38 \| good	7.006 \| good	25.981 \| good	24.258 \| good	0.56 \| good	5.52 \| good	0.257 \| good
2026-09-07T05:00:00.000Z	33 \| good	5.678 \| good	22.02 \| good	24.72 \| good	0.376 \| good	4.802 \| good	0.226 \| good
2026-09-07T06:00:00.000Z	38 \| good	6.643 \| good	23.801 \| good	20.184 \| good	0.307 \| good	3.564 \| good	0.25 \| good
2026-09-07T07:00:00.000Z	27 \| good	5.378 \| good	25.183 \| good	18.915 \| good	0.307 \| good	6.308 \| good	0.238 \| good
2026-09-07T08:00:00.000Z	33 \| good	5.847 \| good	21.764 \| good	20.921 \| good	0.474 \| good	9.417 \| good	0.238 \| good
2026-09-07T09:00:00.000Z	33 \| good	5.886 \| good	25.532 \| good	19.269 \| good	0.768 \| good	4.801 \| good	0.213 \| good
2026-09-07T10:00:00.000Z	27 \| good	5.021 \| good	25.726 \| good	19.428 \| good	1.646 \| good	5.44 \| good	0.226 \| good
2026-09-07T11:00:00.000Z	38 \| good	6.766 \| good	27.825 \| good	15.161 \| good	0.79 \| good	5.997 \| good	0.245 \| good
2026-09-07T12:00:00.000Z	38 \| good	6.801 \| good	29.479 \| good	14.465 \| good	0.542 \| good	5.48 \| good	0.333 \| good
2026-09-07T12:00:00.000Z	38 \| good	6.801 \| good	29.479 \| good	14.465 \| good	0.542 \| good	5.48 \| good	0.333 \| good
2026-09-07T13:00:00.000Z	64 \| moderate	15.864 \| fine	70.62 \| fine	12.321 \| good	1.033 \| good	7.456 \| good	0.186 \| good
2026-09-07T14:00:00.000Z	58 \| moderate	13.181 \| fine	59.06 \| fine	23.039 \| good	1.679 \| good	5.999 \| good	0.181 \| good
2026-09-07T15:00:00.000Z	56 \| moderate	11.974 \| good	53.769 \| good	32.143 \| good	1.992 \| good	4.828 \| good	0.179 \| good
2026-09-07T16:00:00.000Z	52 \| moderate	10.48 \| good	46.197 \| good	39.321 \| good	1.827 \| good	3.043 \| good	0.169 \| good
2026-09-07T17:00:00.000Z	54 \| moderate	10.848 \| good	48.025 \| good	46.15 \| good	1.579 \| good	2.003 \| good	0.164 \| good
2026-09-07T18:00:00.000Z	60 \| moderate	13.741 \| fine	61.501 \| fine	52.325 \| good	1.441 \| good	1.504 \| good	0.162 \| good
2026-09-07T19:00:00.000Z	62 \| moderate	14.842 \| fine	67.03 \| fine	56.612 \| fine	1.363 \| good	1.275 \| good	0.161 \| good
2026-09-07T20:00:00.000Z	62 \| moderate	15.397 \| fine	68.864 \| fine	58.215 \| fine	1.338 \| good	1.251 \| good	0.161 \| good
2026-09-07T21:00:00.000Z	64 \| moderate	16.141 \| fine	71.497 \| fine	51.92 \| good	1.34 \| good	1.406 \| good	0.161 \| good
2026-09-07T22:00:00.000Z	66 \| moderate	17.34 \| fine	77.216 \| fine	43.394 \| good	1.364 \| good	1.805 \| good	0.162 \| good
2026-09-07T23:00:00.000Z	67 \| moderate	17.967 \| fine	79.287 \| fine	38.367 \| good	1.363 \| good	2.827 \| good	0.168 \| good
2026-09-08T00:00:00.000Z	69 \| moderate	19.383 \| fine	85.028 \| fine	30.726 \| good	1.361 \| good	5.213 \| good	0.18 \| good
2026-09-08T01:00:00.000Z	66 \| moderate	16.73 \| fine	74.557 \| fine	25.002 \| good	1.407 \| good	7.984 \| good	0.194 \| good
2026-09-08T02:00:00.000Z	60 \| moderate	14.003 \| fine	62.796 \| fine	19.689 \| good	1.454 \| good	9.731 \| good	0.198 \| good
2026-09-08T03:00:00.000Z	60 \| moderate	13.528 \| fine	60.855 \| fine	16.419 \| good	1.516 \| good	11.003 \| good	0.2 \| good
2026-09-08T04:00:00.000Z	60 \| moderate	14.445 \| fine	64.964 \| fine	12.948 \| good	1.608 \| good	12.049 \| good	0.201 \| good
2026-09-08T05:00:00.000Z	58 \| moderate	13.368 \| fine	60.312 \| fine	14.086 \| good	1.698 \| good	12.668 \| good	0.203 \| good
2026-09-08T06:00:00.000Z	56 \| moderate	11.867 \| good	53.381 \| good	15.541 \| good	1.755 \| good	12.737 \| good	0.204 \| good
2026-09-08T07:00:00.000Z	54 \| moderate	11.284 \| good	49.875 \| good	14.5 \| good	1.825 \| good	11.96 \| good	0.199 \| good
2026-09-08T08:00:00.000Z	56 \| moderate	12.365 \| fine	55.301 \| fine	13.936 \| good	1.871 \| good	10.859 \| good	0.193 \| good
2026-09-08T09:00:00.000Z	56 \| moderate	12.386 \| fine	55.301 \| fine	13.482 \| good	1.858 \| good	10.195 \| good	0.19 \| good
2026-09-08T10:00:00.000Z	64 \| moderate	16.082 \| fine	71.461 \| fine	11.68 \| good	1.806 \| good	10.061 \| good	0.19 \| good
2026-09-08T11:00:00.000Z	64 \| moderate	16.177 \| fine	71.588 \| fine	10.267 \| good	1.747 \| good	10.365 \| good	0.192 \| good
2026-09-08T12:00:00.000Z	66 \| moderate	16.809 \| fine	74.811 \| fine	8.976 \| good	1.679 \| good	11.097 \| good	0.199 \| good
2026-09-08T13:00:00.000Z	64 \| moderate	15.805 \| fine	70.757 \| fine	14.481 \| good	1.582 \| good	10.462 \| good	0.215 \| good
2026-09-08T14:00:00.000Z	62 \| moderate	15.213 \| fine	67.466 \| fine	19.898 \| good	1.634 \| good	8.358 \| good	0.212 \| good
2026-09-08T15:00:00.000Z	64 \| moderate	16.167 \| fine	71.468 \| fine	26.838 \| good	1.568 \| good	6.966 \| good	0.21 \| good
2026-09-08T16:00:00.000Z	66 \| moderate	16.523 \| fine	73.282 \| fine	39.102 \| good	1.444 \| good	5.387 \| good	0.206 \| good
2026-09-08T17:00:00.000Z	62 \| moderate	14.605 \| fine	65.282 \| fine	50.661 \| good	1.249 \| good	3.171 \| good	0.195 \| good
2026-09-08T18:00:00.000Z	58 \| moderate	13.234 \| fine	59.282 \| fine	54.476 \| good	1.084 \| good	1.827 \| good	0.186 \| good
2026-09-08T19:00:00.000Z	60 \| moderate	14.372 \| fine	64.882 \| fine	53.595 \| good	0.983 \| good	1.406 \| good	0.182 \| good
2026-09-08T20:00:00.000Z	62 \| moderate	15.02 \| fine	67.354 \| fine	51.3 \| good	0.917 \| good	1.32 \| good	0.179 \| good
2026-09-08T21:00:00.000Z	62 \| moderate	14.917 \| fine	66.948 \| fine	47.373 \| good	0.883 \| good	1.399 \| good	0.178 \| good
2026-09-08T22:00:00.000Z	62 \| moderate	15.061 \| fine	67.24 \| fine	39.688 \| good	0.884 \| good	1.732 \| good	0.18 \| good
2026-09-08T23:00:00.000Z	64 \| moderate	15.653 \| fine	69.15 \| fine	32.536 \| good	0.903 \| good	2.848 \| good	0.188 \| good
2026-09-09T00:00:00.000Z	64 \| moderate	16.349 \| fine	73.078 \| fine	34.832 \| good	0.954 \| good	5.232 \| good	0.202 \| good
2026-09-09T01:00:00.000Z	62 \| moderate	15.083 \| fine	67.144 \| fine	37.651 \| good	1.013 \| good	7.081 \| good	0.211 \| good
2026-09-09T02:00:00.000Z	60 \| moderate	13.652 \| fine	61.054 \| fine	37.147 \| good	1.009 \| good	7.951 \| good	0.215 \| good
2026-09-09T03:00:00.000Z	58 \| moderate	12.844 \| fine	57.466 \| fine	34.88 \| good	0.955 \| good	8.084 \| good	0.215 \| good
2026-09-09T04:00:00.000Z	56 \| moderate	12.22 \| fine	55.001 \| fine	31.078 \| good	0.877 \| good	7.725 \| good	0.214 \| good
2026-09-09T05:00:00.000Z	56 \| moderate	11.974 \| good	53.901 \| good	28.208 \| good	0.805 \| good	6.83 \| good	0.211 \| good
2026-09-09T06:00:00.000Z	58 \| moderate	12.754 \| fine	57.269 \| fine	25.131 \| good	0.77 \| good	5.881 \| good	0.207 \| good
2026-09-09T07:00:00.000Z	60 \| moderate	14.058 \| fine	63.164 \| fine	24.266 \| good	0.781 \| good	5.394 \| good	0.203 \| good
2026-09-09T08:00:00.000Z	60 \| moderate	14.475 \| fine	64.998 \| fine	20.456 \| good	0.813 \| good	5.087 \| good	0.2 \| good
2026-09-09T09:00:00.000Z	60 \| moderate	13.514 \| fine	61.124 \| fine	19.825 \| good	0.869 \| good	4.694 \| good	0.198 \| good
2026-09-09T10:00:00.000Z	64 \| moderate	16.136 \| fine	71.492 \| fine	20.052 \| good	0.843 \| good	4.612 \| good	0.196 \| good
2026-09-09T11:00:00.000Z	62 \| moderate	15.042 \| fine	67.288 \| fine	18.169 \| good	0.78 \| good	4.383 \| good	0.193 \| good
2026-09-09T12:00:00.000Z	38 \| good	7.258 \| good	7.563 \| good	41.186 \| good	0.69 \| good	4.49 \| good	0.19 \| 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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St. Charles, Illinois air quality map: Stay updated on AQI near you

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)

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

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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?