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

The current PM10 concentration at Marion, Illinois is 21.779 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Marion, Illinois is 1.421 ppb.

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

The current ozone (O3) concentration at Marion, Illinois is 44.05 ppm.

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

The current nitrogen dioxide (NO2) concentration at Marion, Illinois is 2.795 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 4.981 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)

4.98 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

21.78 μg/m³

155

255

425

605+

Ozone (O₃)

44.05 ppb

201

201+

Sulfur Dioxide (SO₂)

1.42 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.79 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.22 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
2026-07-21T23:00:00.000Z	49 \| good	9.123 \| good	39.934 \| good	47.076 \| good	0.647 \| good	1.805 \| good	0.271 \| good
2026-07-22T00:00:00.000Z	56 \| moderate	12.111 \| fine	50.865 \| good	44.901 \| good	0.635 \| good	1.908 \| good	0.26 \| good
2026-07-22T01:00:00.000Z	58 \| moderate	12.918 \| fine	56.497 \| fine	43.568 \| good	0.724 \| good	2.224 \| good	0.26 \| good
2026-07-22T02:00:00.000Z	60 \| moderate	13.629 \| fine	53.102 \| good	39.667 \| good	0.59 \| good	4.193 \| good	0.26 \| good
2026-07-22T03:00:00.000Z	60 \| moderate	14.097 \| fine	52.843 \| good	38.07 \| good	0.572 \| good	2.343 \| good	0.271 \| good
2026-07-22T04:00:00.000Z	56 \| moderate	12.423 \| fine	59.113 \| fine	37.512 \| good	0.684 \| good	3.851 \| good	0.26 \| good
2026-07-22T05:00:00.000Z	54 \| moderate	11.113 \| good	43.945 \| good	38.909 \| good	0.542 \| good	2.485 \| good	0.26 \| good
2026-07-22T06:00:00.000Z	54 \| moderate	10.526 \| good	35.842 \| good	33.797 \| good	0.715 \| good	2.407 \| good	0.249 \| good
2026-07-22T07:00:00.000Z	49 \| good	9.483 \| good	32.108 \| good	32.947 \| good	0.691 \| good	2.406 \| good	0.235 \| good
2026-07-22T08:00:00.000Z	54 \| moderate	10.746 \| good	48.257 \| good	32.851 \| good	0.798 \| good	2.404 \| good	0.224 \| good
2026-07-22T09:00:00.000Z	54 \| moderate	10.975 \| good	35.807 \| good	33.744 \| good	0.672 \| good	5.166 \| good	0.249 \| good
2026-07-22T10:00:00.000Z	54 \| moderate	11.353 \| good	42.416 \| good	30.761 \| good	0.281 \| good	3.686 \| good	0.235 \| good
2026-07-22T11:00:00.000Z	54 \| moderate	11.4 \| good	49.257 \| good	26.481 \| good	0.513 \| good	4.164 \| good	0.224 \| good
2026-07-22T12:00:00.000Z	54 \| moderate	10.858 \| good	39.469 \| good	29.985 \| good	0.438 \| good	5.337 \| good	0.224 \| good
2026-07-22T13:00:00.000Z	52 \| moderate	10.478 \| good	40.112 \| good	27.846 \| good	0.502 \| good	4.662 \| good	0.26 \| good
2026-07-22T14:00:00.000Z	52 \| moderate	10.459 \| good	47.282 \| good	30.064 \| good	0.506 \| good	4.6 \| good	0.224 \| good
2026-07-22T15:00:00.000Z	49 \| good	8.606 \| good	29.709 \| good	30.145 \| good	1.329 \| good	4.586 \| good	0.249 \| good
2026-07-22T16:00:00.000Z	44 \| good	8.337 \| good	33.854 \| good	28.295 \| good	1.144 \| good	3.729 \| good	0.224 \| good
2026-07-22T17:00:00.000Z	49 \| good	9.103 \| good	37.504 \| good	29.253 \| good	1.176 \| good	3.276 \| good	0.224 \| good
2026-07-22T18:00:00.000Z	44 \| good	7.981 \| good	35.703 \| good	33.956 \| good	0.854 \| good	2.738 \| good	0.224 \| good
2026-07-22T19:00:00.000Z	44 \| good	7.828 \| good	30.581 \| good	36.624 \| good	1.13 \| good	1.948 \| good	0.224 \| good
2026-07-22T20:00:00.000Z	44 \| good	8.183 \| good	36.497 \| good	34.885 \| good	1.328 \| good	2.365 \| good	0.235 \| good
2026-07-22T21:00:00.000Z	38 \| good	6.972 \| good	26.626 \| good	37.599 \| good	0.832 \| good	2.374 \| good	0.235 \| good
2026-07-22T22:00:00.000Z	49 \| good	9.035 \| good	28.467 \| good	39.357 \| good	0.752 \| good	2.529 \| good	0.224 \| good
2026-07-22T23:00:00.000Z	38 \| good	7.483 \| good	26.685 \| good	38.125 \| good	0.756 \| good	3.178 \| good	0.224 \| good
2026-07-23T00:00:00.000Z	44 \| good	7.882 \| good	29.512 \| good	36.885 \| good	0.457 \| good	3.412 \| good	0.224 \| good
2026-07-23T01:00:00.000Z	38 \| good	7.239 \| good	28.706 \| good	37.005 \| good	0.464 \| good	3.464 \| good	0.224 \| good
2026-07-23T02:00:00.000Z	44 \| good	8.033 \| good	32.973 \| good	34.733 \| good	0.691 \| good	3.556 \| good	0.224 \| good
2026-07-23T03:00:00.000Z	20 \| good	0.652 \| good	2.059 \| good	22.12 \| good	0.303 \| good	2.746 \| good	0.195 \| good
2026-07-23T04:00:00.000Z	38 \| good	7.439 \| good	26.123 \| good	31.02 \| good	0.811 \| good	4.027 \| good	0.224 \| good
2026-07-23T05:00:00.000Z	38 \| good	6.669 \| good	29.309 \| good	30.535 \| good	0.954 \| good	4.841 \| good	0.224 \| good
2026-07-23T06:00:00.000Z	38 \| good	6.877 \| good	28.655 \| good	28.102 \| good	0.988 \| good	6.364 \| good	0.224 \| good
2026-07-23T07:00:00.000Z	38 \| good	6.876 \| good	28.645 \| good	26.401 \| good	0.965 \| good	6.379 \| good	0.224 \| good
2026-07-23T08:00:00.000Z	38 \| good	6.815 \| good	24.239 \| good	22.661 \| good	1.081 \| good	6.384 \| good	0.199 \| good
2026-07-23T09:00:00.000Z	33 \| good	6.382 \| good	24.332 \| good	23.142 \| good	0.774 \| good	5.899 \| good	0.199 \| good
2026-07-23T10:00:00.000Z	33 \| good	6.095 \| good	24.616 \| good	20.833 \| good	0.786 \| good	6.187 \| good	0.199 \| good
2026-07-23T11:00:00.000Z	33 \| good	6.055 \| good	24.299 \| good	18.975 \| good	0.73 \| good	5.848 \| good	0.175 \| good
2026-07-23T12:00:00.000Z	33 \| good	6.151 \| good	23.567 \| good	22.027 \| good	0.507 \| good	7.45 \| good	0.224 \| good
2026-07-23T13:00:00.000Z	27 \| good	5.327 \| good	21.567 \| good	19.293 \| good	0.619 \| good	7.196 \| good	0.269 \| good
2026-07-23T14:00:00.000Z	27 \| good	5.238 \| good	19.062 \| good	23.455 \| good	2.887 \| good	7.836 \| good	0.277 \| good
2026-07-23T15:00:00.000Z	33 \| good	5.672 \| good	24.347 \| good	28.765 \| good	2.061 \| good	7.1 \| good	0.23 \| good
2026-07-23T16:00:00.000Z	33 \| good	5.576 \| good	20.092 \| good	30.138 \| good	3.475 \| good	6.088 \| good	0.204 \| good
2026-07-23T17:00:00.000Z	32 \| good	5.412 \| good	21.776 \| good	34.759 \| good	1.534 \| good	3.132 \| good	0.21 \| good
2026-07-23T18:00:00.000Z	35 \| good	5.25 \| good	16.98 \| good	38.164 \| good	1.871 \| good	3.048 \| good	0.204 \| good
2026-07-23T19:00:00.000Z	38 \| good	5.157 \| good	20.205 \| good	40.744 \| good	1.081 \| good	3.179 \| good	0.204 \| good
2026-07-23T20:00:00.000Z	40 \| good	5.628 \| good	27.699 \| good	43.015 \| good	1.099 \| good	2.922 \| good	0.204 \| good
2026-07-23T21:00:00.000Z	41 \| good	5.497 \| good	24.199 \| good	44.035 \| good	1.389 \| good	2.802 \| good	0.215 \| good
2026-07-23T22:00:00.000Z	41 \| good	4.981 \| good	21.779 \| good	44.05 \| good	1.421 \| good	2.795 \| good	0.217 \| good
2026-07-23T23:00:00.000Z	39 \| good	3.396 \| good	15.002 \| good	42.279 \| good	0.43 \| good	0.617 \| good	0.143 \| good
2026-07-24T00:00:00.000Z	32 \| good	2.222 \| good	9.032 \| good	35.485 \| good	0.402 \| good	1.221 \| good	0.148 \| good
2026-07-24T01:00:00.000Z	31 \| good	2.938 \| good	12.011 \| good	32.658 \| good	0.387 \| good	2.744 \| good	0.16 \| good
2026-07-24T02:00:00.000Z	28 \| good	3.361 \| good	14.761 \| good	29.744 \| good	0.397 \| good	4.017 \| good	0.168 \| good
2026-07-24T03:00:00.000Z	24 \| good	2.894 \| good	11.981 \| good	25.545 \| good	0.404 \| good	4.112 \| good	0.167 \| good
2026-07-24T04:00:00.000Z	20 \| good	2.159 \| good	8.929 \| good	21.958 \| good	0.413 \| good	4.073 \| good	0.165 \| good
2026-07-24T05:00:00.000Z	17 \| good	1.373 \| good	5.142 \| good	18.48 \| good	0.424 \| good	4.416 \| good	0.167 \| good
2026-07-24T06:00:00.000Z	17 \| good	0.806 \| good	3.03 \| good	18.197 \| good	0.446 \| good	5.331 \| good	0.172 \| good
2026-07-24T07:00:00.000Z	17 \| good	0.367 \| good	1.179 \| good	17.726 \| good	0.481 \| good	6.655 \| good	0.179 \| good
2026-07-24T08:00:00.000Z	16 \| good	0.803 \| good	3.019 \| good	16.936 \| good	0.523 \| good	8.175 \| good	0.188 \| good
2026-07-24T09:00:00.000Z	14 \| good	1.63 \| good	7 \| good	15.03 \| good	0.566 \| good	9.559 \| good	0.197 \| good
2026-07-24T10:00:00.000Z	13 \| good	1.783 \| good	7.117 \| good	14.134 \| good	0.602 \| good	10.405 \| good	0.204 \| good
2026-07-24T11:00:00.000Z	13 \| good	2.433 \| good	10.046 \| good	13.638 \| good	0.614 \| good	10.625 \| good	0.21 \| good
2026-07-24T12:00:00.000Z	19 \| good	3.204 \| good	13.989 \| good	19.608 \| good	0.582 \| good	8.743 \| good	0.211 \| good
2026-07-24T13:00:00.000Z	25 \| good	4.165 \| good	18.077 \| good	27.033 \| good	0.59 \| good	5.237 \| good	0.199 \| good
2026-07-24T14:00:00.000Z	29 \| good	4.492 \| good	19.158 \| good	31.483 \| good	0.834 \| good	2.321 \| good	0.176 \| good
2026-07-24T15:00:00.000Z	35 \| good	5.845 \| good	25.148 \| good	37.714 \| good	1.232 \| good	1.152 \| good	0.162 \| good
2026-07-24T16:00:00.000Z	41 \| good	5.61 \| good	24.151 \| good	44.015 \| good	1.21 \| good	0.748 \| good	0.158 \| good
2026-07-24T17:00:00.000Z	43 \| good	6.214 \| good	28.038 \| good	46.494 \| good	1.111 \| good	0.6 \| good	0.156 \| good
2026-07-24T18:00:00.000Z	44 \| good	6.131 \| good	27.078 \| good	47.809 \| good	1.04 \| good	0.558 \| good	0.156 \| good
2026-07-24T19:00:00.000Z	44 \| good	5.968 \| good	26.823 \| good	48.162 \| good	0.998 \| good	0.545 \| good	0.157 \| good
2026-07-24T20:00:00.000Z	39 \| good	6.635 \| good	29.851 \| good	41.957 \| good	0.972 \| good	0.557 \| good	0.158 \| good
2026-07-24T21:00:00.000Z	44 \| good	8.174 \| good	35.886 \| good	36.879 \| good	0.958 \| good	0.614 \| good	0.16 \| good
2026-07-24T22:00:00.000Z	44 \| good	7.927 \| good	34.921 \| good	42.521 \| good	0.955 \| good	0.745 \| good	0.161 \| good
2026-07-24T23:00:00.000Z	40 \| good	6.777 \| good	30.01 \| good	43.385 \| good	0.927 \| good	1.092 \| good	0.164 \| good
2026-07-25T00:00:00.000Z	38 \| good	6.092 \| good	26.893 \| good	40.637 \| good	0.834 \| good	2.325 \| good	0.177 \| good
2026-07-25T01:00:00.000Z	36 \| good	5.508 \| good	23.894 \| good	38.784 \| good	0.786 \| good	3.225 \| good	0.184 \| good
2026-07-25T02:00:00.000Z	30 \| good	5.233 \| good	22.893 \| good	32.069 \| good	0.748 \| good	3.525 \| good	0.184 \| good
2026-07-25T03:00:00.000Z	25 \| good	4.159 \| good	18.047 \| good	26.726 \| good	0.71 \| good	3.312 \| good	0.179 \| good
2026-07-25T04:00:00.000Z	22 \| good	3.204 \| good	13.989 \| good	23.702 \| good	0.664 \| good	3.069 \| good	0.173 \| good
2026-07-25T05:00:00.000Z	19 \| good	2.916 \| good	11.988 \| good	21.38 \| good	0.59 \| good	2.845 \| good	0.167 \| good
2026-07-25T06:00:00.000Z	21 \| good	2.882 \| good	11.981 \| good	22.797 \| good	0.556 \| good	2.574 \| good	0.163 \| good
2026-07-25T07:00:00.000Z	20 \| good	3.196 \| good	13.962 \| good	22.033 \| good	0.578 \| good	2.376 \| good	0.16 \| good
2026-07-25T08:00:00.000Z	22 \| good	3.847 \| good	17 \| good	20.965 \| good	0.622 \| good	2.338 \| good	0.159 \| good
2026-07-25T09:00:00.000Z	22 \| good	4.489 \| good	19.059 \| good	20.989 \| good	0.64 \| good	2.438 \| good	0.161 \| good
2026-07-25T10:00:00.000Z	22 \| good	3.826 \| good	16.953 \| good	19.474 \| good	0.627 \| good	2.469 \| good	0.162 \| good
2026-07-25T11:00:00.000Z	22 \| good	4.499 \| good	19.112 \| good	20.107 \| good	0.621 \| good	2.563 \| good	0.164 \| good
2026-07-25T12:00:00.000Z	33 \| good	6.053 \| good	26.782 \| good	23.451 \| good	0.59 \| good	2.415 \| good	0.166 \| good
2026-07-25T13:00:00.000Z	49 \| good	9.074 \| good	40.651 \| good	33.925 \| good	0.53 \| good	2.3 \| good	0.17 \| good
2026-07-25T14:00:00.000Z	44 \| good	8.153 \| good	35.927 \| good	39.152 \| good	0.505 \| good	2.253 \| good	0.174 \| good
2026-07-25T15:00:00.000Z	44 \| good	7.978 \| good	35.187 \| good	42.302 \| good	0.476 \| good	1.972 \| good	0.176 \| good
2026-07-25T16:00:00.000Z	49 \| good	8.567 \| good	37.313 \| good	44.624 \| good	0.43 \| good	1.671 \| good	0.176 \| good
2026-07-25T17:00:00.000Z	49 \| good	9.119 \| good	40.951 \| good	44.102 \| good	0.421 \| good	1.228 \| good	0.178 \| good
2026-07-25T18:00:00.000Z	54 \| moderate	10.576 \| good	47.063 \| good	44.673 \| good	0.439 \| good	0.812 \| good	0.183 \| good
2026-07-25T19:00:00.000Z	54 \| moderate	10.893 \| good	48.12 \| good	43.852 \| good	0.438 \| good	0.72 \| good	0.187 \| good
2026-07-25T20:00:00.000Z	56 \| moderate	11.996 \| good	53.986 \| good	44.753 \| good	0.444 \| good	0.778 \| good	0.189 \| good
2026-07-25T21:00:00.000Z	56 \| moderate	11.85 \| good	52.095 \| good	46.837 \| good	0.441 \| good	0.83 \| good	0.19 \| good
2026-07-25T22:00:00.000Z	56 \| moderate	11.829 \| good	52.148 \| good	49.638 \| good	0.425 \| good	0.883 \| good	0.19 \| good

Marion

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Marion, Illinois air quality map: Track AQI near you

0.22ppm

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 10:00:00 on 2026-07-22.

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 03:00:00 on 2026-07-23.

What is the current air quality in Marion, Illinois?

The current air quality in Marion, Illinois is 41, 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 4.981 μg/m³.

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

The current PM₁₀ concentration at Marion, Illinois is 21.779 μg/m³.

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

The current carbon monoxide (CO) concentration at Marion, Illinois is 0.217 ppm.

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

The current sulfur dioxide (SO₂) concentration at Marion, Illinois is 1.421 ppb.

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

The current ozone (O₃) concentration at Marion, Illinois is 44.05 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Marion, Illinois is 2.795 ppb.

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