What is the current concentration of PM10 in Marion, Illinois?

The current PM10 concentration at Marion, Illinois is 29.862 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Marion, Illinois?

The current sulfur dioxide (SO2) concentration at Marion, Illinois is 3.346 ppb.

What is the current concentration of ozone (O3) in Marion, Illinois?

The current ozone (O3) concentration at Marion, Illinois is 42.424 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Marion, Illinois?

The current nitrogen dioxide (NO2) concentration at Marion, Illinois is 5.554 ppb.

Marion, Illinois live air quality index now

Q: What is the current concentration of PM2.5 in Marion, Illinois?

The current PM2.5 concentration at Marion, Illinois is 6.212 μg/m3.

Stay updated with real-time air quality in Marion, 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

Marion, Illinois

Last updated: ... (Local time)

Major air pollutants in Marion, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.21 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

29.86 μg/m³

155

255

425

605+

Ozone (O₃)

42.42 ppb

201

201+

Sulfur Dioxide (SO₂)

3.35 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.55 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Marion, Illinois

Scroll To Air Quality Map

Track live Marion, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T21:00:00.000Z	43 \| good	4.618 \| good	18.734 \| good	46.055 \| good	2.089 \| good	4.348 \| good	0.185 \| good
2026-10-20T22:00:00.000Z	43 \| good	5.172 \| good	26.032 \| good	46.272 \| good	2.102 \| good	4.116 \| good	0.185 \| good
2026-10-20T23:00:00.000Z	44 \| good	5.952 \| good	21.909 \| good	47.617 \| good	1.48 \| good	3.126 \| good	0.208 \| good
2026-10-21T00:00:00.000Z	44 \| good	7.703 \| good	24.382 \| good	46.653 \| good	1.484 \| good	3.433 \| good	0.331 \| good
2026-10-21T01:00:00.000Z	36 \| good	6.467 \| good	26.887 \| good	38.97 \| good	1.465 \| good	6.177 \| good	0.541 \| good
2026-10-21T02:00:00.000Z	38 \| good	6.595 \| good	23.136 \| good	38.482 \| good	1.349 \| good	16.339 \| good	0.553 \| good
2026-10-21T03:00:00.000Z	52 \| moderate	9.91 \| good	43.963 \| good	18.686 \| good	0.794 \| good	6.466 \| good	0.188 \| good
2026-10-21T04:00:00.000Z	52 \| moderate	10.212 \| good	45.61 \| good	24.277 \| good	1.048 \| good	15.443 \| good	0.475 \| good
2026-10-21T05:00:00.000Z	44 \| good	8.221 \| good	28.454 \| good	20.34 \| good	0.991 \| good	11.783 \| good	0.562 \| good
2026-10-21T06:00:00.000Z	44 \| good	8.204 \| good	31.125 \| good	23.472 \| good	1.006 \| good	10.403 \| good	0.634 \| good
2026-10-21T07:00:00.000Z	38 \| good	7.226 \| good	29.374 \| good	22.758 \| good	1.005 \| good	10.705 \| good	0.656 \| good
2026-10-21T08:00:00.000Z	33 \| good	5.938 \| good	27.412 \| good	21.209 \| good	1.025 \| good	13.606 \| good	0.656 \| good
2026-10-21T09:00:00.000Z	33 \| good	5.966 \| good	24.703 \| good	26.661 \| good	1.002 \| good	13.396 \| good	0.593 \| good
2026-10-21T10:00:00.000Z	44 \| good	7.501 \| good	22.797 \| good	17.405 \| good	0.917 \| good	12.313 \| good	0.558 \| good
2026-10-21T11:00:00.000Z	38 \| good	7.48 \| good	22.865 \| good	15.793 \| good	1.182 \| good	10.55 \| good	0.533 \| good
2026-10-21T12:00:00.000Z	44 \| good	8.092 \| good	41.313 \| good	9.794 \| good	1.425 \| good	11.968 \| good	0.607 \| good
2026-10-21T13:00:00.000Z	44 \| good	8.152 \| good	29.21 \| good	9.851 \| good	1.409 \| good	9.291 \| good	0.643 \| good
2026-10-21T14:00:00.000Z	27 \| good	4.615 \| good	21.972 \| good	14.668 \| good	1.54 \| good	10.423 \| good	0.812 \| good
2026-10-21T15:00:00.000Z	38 \| good	6.75 \| good	32.829 \| good	16.612 \| good	1.592 \| good	11.12 \| good	0.574 \| good
2026-10-21T16:00:00.000Z	38 \| good	6.582 \| good	31.59 \| good	27.578 \| good	3.896 \| good	9.818 \| good	0.453 \| good
2026-10-21T17:00:00.000Z	33 \| good	6.389 \| good	27.386 \| good	30.818 \| good	8.189 \| good	10.252 \| good	0.368 \| good
2026-10-21T18:00:00.000Z	37 \| good	5.352 \| good	22.614 \| good	40.439 \| good	5.439 \| good	11.167 \| good	0.309 \| good
2026-10-21T19:00:00.000Z	44 \| good	5.1 \| good	18.841 \| good	48.261 \| good	5.968 \| good	9.474 \| good	0.282 \| good
2026-10-21T20:00:00.000Z	47 \| good	4.712 \| good	18.831 \| good	50.729 \| good	2.621 \| good	6.616 \| good	0.258 \| good
2026-10-21T21:00:00.000Z	47 \| good	4.756 \| good	17.858 \| good	51.056 \| good	2.014 \| good	5.245 \| good	0.222 \| good
2026-10-21T22:00:00.000Z	50 \| good	5.217 \| good	19.619 \| good	54.281 \| good	1.895 \| good	4.47 \| good	0.224 \| good
2026-10-21T23:00:00.000Z	47 \| good	7.239 \| good	29.144 \| good	51.143 \| good	1.887 \| good	3.519 \| good	0.235 \| good
2026-10-22T00:00:00.000Z	44 \| good	6.377 \| good	26.46 \| good	48.22 \| good	1.691 \| good	10.642 \| good	0.269 \| good
2026-10-22T01:00:00.000Z	44 \| good	7.46 \| good	24.383 \| good	46.862 \| good	1.677 \| good	12.1 \| good	0.516 \| good
2026-10-22T02:00:00.000Z	58 \| moderate	13.204 \| fine	50.636 \| good	39.286 \| good	1.409 \| good	14.085 \| good	0.55 \| good
2026-10-22T03:00:00.000Z	60 \| moderate	14.161 \| fine	63 \| fine	19.536 \| good	0.988 \| good	11.228 \| good	0.267 \| good
2026-10-22T04:00:00.000Z	62 \| moderate	14.696 \| fine	46.104 \| good	21.968 \| good	1.495 \| good	15.201 \| good	0.765 \| good
2026-10-22T05:00:00.000Z	66 \| moderate	16.549 \| fine	52.292 \| good	26.195 \| good	1.327 \| good	16.074 \| good	0.725 \| good
2026-10-22T06:00:00.000Z	67 \| moderate	18.292 \| fine	59.599 \| fine	24.439 \| good	1.302 \| good	18.888 \| good	0.71 \| good
2026-10-22T07:00:00.000Z	54 \| moderate	11.088 \| good	29.513 \| good	16.812 \| good	1.155 \| good	15.584 \| good	0.732 \| good
2026-10-22T08:00:00.000Z	44 \| good	7.953 \| good	29.173 \| good	15.207 \| good	1.143 \| good	18.065 \| good	0.606 \| good
2026-10-22T09:00:00.000Z	43 \| good	6.811 \| good	45.952 \| good	14.495 \| good	1.233 \| good	16.117 \| good	0.584 \| good
2026-10-22T10:00:00.000Z	58 \| moderate	12.866 \| fine	44.389 \| good	13.971 \| good	1.369 \| good	10.93 \| good	0.499 \| good
2026-10-22T11:00:00.000Z	52 \| moderate	10.065 \| good	42.986 \| good	11.747 \| good	1.322 \| good	10.421 \| good	0.591 \| good
2026-10-22T12:00:00.000Z	38 \| good	6.984 \| good	36.446 \| good	8.792 \| good	1.194 \| good	9.701 \| good	0.676 \| good
2026-10-22T13:00:00.000Z	44 \| good	8.064 \| good	39.413 \| good	21.554 \| good	1.182 \| good	9.785 \| good	0.63 \| good
2026-10-22T14:00:00.000Z	45 \| good	5.399 \| good	48.785 \| good	16.813 \| good	1.267 \| good	8.755 \| good	0.694 \| good
2026-10-22T15:00:00.000Z	38 \| good	6.996 \| good	28.511 \| good	20.735 \| good	1.284 \| good	8.603 \| good	0.674 \| good
2026-10-22T16:00:00.000Z	33 \| good	6.288 \| good	32.308 \| good	27.351 \| good	2.002 \| good	11.265 \| good	0.525 \| good
2026-10-22T17:00:00.000Z	34 \| good	5.887 \| good	27.967 \| good	37.231 \| good	2.604 \| good	8.466 \| good	0.417 \| good
2026-10-22T18:00:00.000Z	38 \| good	6.195 \| good	26.496 \| good	41.074 \| good	2.866 \| good	9.462 \| good	0.368 \| good
2026-10-22T19:00:00.000Z	38 \| good	6.215 \| good	26.406 \| good	40.811 \| good	3.213 \| good	5.947 \| good	0.311 \| good
2026-10-22T20:00:00.000Z	39 \| good	6.212 \| good	29.862 \| good	42.424 \| good	3.346 \| good	5.554 \| good	0.303 \| good
2026-10-21T21:00:00.000Z	51 \| moderate	7.2 \| good	31.958 \| good	54.978 \| good	1.004 \| good	0.598 \| good	0.14 \| good
2026-10-21T22:00:00.000Z	47 \| good	8.264 \| good	36.052 \| good	50.734 \| good	0.946 \| good	0.8 \| good	0.142 \| good
2026-10-21T23:00:00.000Z	52 \| moderate	9.694 \| good	42.958 \| good	40.657 \| good	0.854 \| good	3.202 \| good	0.169 \| good
2026-10-22T00:00:00.000Z	60 \| moderate	14.482 \| fine	64.858 \| fine	31.709 \| good	0.859 \| good	5.838 \| good	0.201 \| good
2026-10-22T01:00:00.000Z	60 \| moderate	13.599 \| fine	60.934 \| fine	23.302 \| good	0.878 \| good	7.665 \| good	0.223 \| good
2026-10-22T02:00:00.000Z	60 \| moderate	13.807 \| fine	62.661 \| fine	20.471 \| good	0.908 \| good	9.137 \| good	0.241 \| good
2026-10-22T03:00:00.000Z	62 \| moderate	14.733 \| fine	64.94 \| fine	17.862 \| good	0.942 \| good	10.517 \| good	0.257 \| good
2026-10-22T04:00:00.000Z	62 \| moderate	15.132 \| fine	66.897 \| fine	16.688 \| good	0.963 \| good	11.916 \| good	0.273 \| good
2026-10-22T05:00:00.000Z	62 \| moderate	15.448 \| fine	68.861 \| fine	17.073 \| good	0.951 \| good	12.936 \| good	0.288 \| good
2026-10-22T06:00:00.000Z	64 \| moderate	15.552 \| fine	68.861 \| fine	16.519 \| good	0.917 \| good	13.418 \| good	0.298 \| good
2026-10-22T07:00:00.000Z	62 \| moderate	15.097 \| fine	66.861 \| fine	15.559 \| good	0.884 \| good	13.611 \| good	0.303 \| good
2026-10-22T08:00:00.000Z	60 \| moderate	14.411 \| fine	64.71 \| fine	14.685 \| good	0.865 \| good	13.774 \| good	0.308 \| good
2026-10-22T09:00:00.000Z	60 \| moderate	13.967 \| fine	62.601 \| fine	13.515 \| good	0.835 \| good	13.876 \| good	0.312 \| good
2026-10-22T10:00:00.000Z	58 \| moderate	13.428 \| fine	60.546 \| fine	15.006 \| good	0.788 \| good	12.836 \| good	0.304 \| good
2026-10-22T11:00:00.000Z	56 \| moderate	12.363 \| fine	56.391 \| fine	13.085 \| good	0.77 \| good	11.813 \| good	0.294 \| good
2026-10-22T12:00:00.000Z	56 \| moderate	11.589 \| good	50.831 \| good	12.888 \| good	0.773 \| good	11.463 \| good	0.291 \| good
2026-10-22T13:00:00.000Z	56 \| moderate	11.969 \| good	53.788 \| good	14.48 \| good	0.765 \| good	10.807 \| good	0.297 \| good
2026-10-22T14:00:00.000Z	52 \| moderate	10.002 \| good	44.878 \| good	27.394 \| good	0.744 \| good	7.084 \| good	0.267 \| good
2026-10-22T15:00:00.000Z	49 \| good	9.328 \| good	41.923 \| good	38.568 \| good	0.79 \| good	4.537 \| good	0.227 \| good
2026-10-22T16:00:00.000Z	49 \| good	8.673 \| good	37.966 \| good	45.891 \| good	0.891 \| good	2.218 \| good	0.183 \| good
2026-10-22T17:00:00.000Z	45 \| good	8.266 \| good	36.059 \| good	49.449 \| good	0.997 \| good	0.99 \| good	0.157 \| good
2026-10-22T18:00:00.000Z	49 \| good	8.545 \| good	37.105 \| good	51.608 \| good	0.956 \| good	0.601 \| good	0.148 \| good
2026-10-22T19:00:00.000Z	49 \| good	8.313 \| good	36.92 \| good	52.965 \| good	0.885 \| good	0.503 \| good	0.145 \| good
2026-10-22T20:00:00.000Z	50 \| good	8.376 \| good	36.97 \| good	53.707 \| good	0.83 \| good	0.487 \| good	0.144 \| good
2026-10-22T21:00:00.000Z	51 \| moderate	8.82 \| good	39.006 \| good	55.353 \| fine	0.789 \| good	0.531 \| good	0.144 \| good
2026-10-22T22:00:00.000Z	49 \| good	9.184 \| good	41.01 \| good	49.925 \| good	0.755 \| good	0.782 \| good	0.147 \| good
2026-10-22T23:00:00.000Z	49 \| good	9.173 \| good	40.886 \| good	41.072 \| good	0.691 \| good	2.668 \| good	0.169 \| good
2026-10-23T00:00:00.000Z	56 \| moderate	11.762 \| good	52.053 \| good	32.632 \| good	0.692 \| good	4.697 \| good	0.194 \| good
2026-10-23T01:00:00.000Z	54 \| moderate	10.916 \| good	48.021 \| good	24.241 \| good	0.707 \| good	5.619 \| good	0.206 \| good
2026-10-23T02:00:00.000Z	56 \| moderate	12.255 \| fine	54.99 \| good	21.847 \| good	0.73 \| good	6.018 \| good	0.213 \| good
2026-10-23T03:00:00.000Z	60 \| moderate	14.229 \| fine	63.172 \| fine	19.877 \| good	0.756 \| good	6.091 \| good	0.216 \| good
2026-10-23T04:00:00.000Z	64 \| moderate	15.875 \| fine	70.824 \| fine	18.608 \| good	0.785 \| good	5.754 \| good	0.215 \| good
2026-10-23T05:00:00.000Z	64 \| moderate	15.882 \| fine	70.946 \| fine	16.708 \| good	0.81 \| good	5.159 \| good	0.211 \| good
2026-10-23T06:00:00.000Z	64 \| moderate	15.693 \| fine	70.67 \| fine	15.327 \| good	0.838 \| good	4.618 \| good	0.208 \| good
2026-10-23T07:00:00.000Z	60 \| moderate	14.175 \| fine	63.059 \| fine	14.309 \| good	0.86 \| good	4.301 \| good	0.206 \| good
2026-10-23T08:00:00.000Z	58 \| moderate	13.062 \| fine	58.88 \| fine	12.893 \| good	0.865 \| good	4.171 \| good	0.206 \| good
2026-10-23T09:00:00.000Z	58 \| moderate	12.621 \| fine	57.024 \| fine	9.817 \| good	0.852 \| good	4.186 \| good	0.207 \| good
2026-10-23T10:00:00.000Z	60 \| moderate	13.541 \| fine	60.892 \| fine	10.674 \| good	0.828 \| good	4.287 \| good	0.209 \| good
2026-10-23T11:00:00.000Z	58 \| moderate	12.895 \| fine	58.787 \| fine	8.328 \| good	0.802 \| good	4.434 \| good	0.212 \| good
2026-10-23T12:00:00.000Z	58 \| moderate	12.716 \| fine	57.024 \| fine	7.985 \| good	0.788 \| good	4.758 \| good	0.217 \| good
2026-10-23T13:00:00.000Z	56 \| moderate	12.375 \| fine	55.06 \| fine	12.59 \| good	0.775 \| good	4.923 \| good	0.226 \| good
2026-10-23T14:00:00.000Z	54 \| moderate	10.66 \| good	47.021 \| good	26.859 \| good	0.756 \| good	3.929 \| good	0.232 \| good
2026-10-23T15:00:00.000Z	52 \| moderate	9.855 \| good	43.982 \| good	37.977 \| good	0.982 \| good	2.872 \| good	0.22 \| good
2026-10-23T16:00:00.000Z	49 \| good	8.614 \| good	37.935 \| good	44.474 \| good	1.338 \| good	1.888 \| good	0.205 \| good
2026-10-23T17:00:00.000Z	44 \| good	7.38 \| good	32.164 \| good	47.503 \| good	1.62 \| good	0.999 \| good	0.183 \| good
2026-10-23T18:00:00.000Z	45 \| good	7.122 \| good	31.906 \| good	49.043 \| good	1.494 \| good	0.686 \| good	0.172 \| good
2026-10-23T19:00:00.000Z	46 \| good	6.349 \| good	28.011 \| good	49.744 \| good	1.34 \| good	0.583 \| good	0.165 \| good
2026-10-23T20:00:00.000Z	46 \| good	5.667 \| good	24.065 \| good	50.494 \| good	1.222 \| good	0.557 \| good	0.159 \| good

Marion

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Marion, Illinois air quality map: Track AQI near you

0.28ppm

How accurate is Illinois, USA air quality data?

Air quality data and pollutant measurements for Illinois, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Marion, Illinois updated?

The air quality for Marion, Illinois is updated every hour.

When was the worst air quality at Marion, Illinois in the last 24 hrs?

The worst air quality in Marion, Illinois in the last 24 hours was observed at 06:00:00 on 2026-10-22.

When was the best air quality at Marion, Illinois in the last 24 hrs?

In the last 24 hrs, the best air quality in Marion, Illinois was observed at 04:00:00 on 2026-10-22.

What is the current air quality in Marion, Illinois?

The current air quality in Marion, Illinois is 39, categorized as Good based on real-time data.

What pollutant is the most common in Marion, Illinois?

The most common pollutant in Marion, Illinois is O3.

What should I do if the air quality in Marion, Illinois is poor?

If the air quality in Marion, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Marion, Illinois?

The current PM_2.5 concentration at Marion, Illinois is 6.212 μg/m³.

What is the current concentration of PM₁₀ in Marion, Illinois?

The current PM₁₀ concentration at Marion, Illinois is 29.862 μg/m³.

What is the current concentration of carbon monoxide (CO) in Marion, Illinois?

The current carbon monoxide (CO) concentration at Marion, Illinois is 0.303 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Marion, Illinois?

The current sulfur dioxide (SO₂) concentration at Marion, Illinois is 3.346 ppb.

What is the current concentration of ozone (O₃) in Marion, Illinois?

The current ozone (O₃) concentration at Marion, Illinois is 42.424 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Marion, Illinois?

The current nitrogen dioxide (NO₂) concentration at Marion, Illinois is 5.554 ppb.

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