What are the current PM10 levels at Centralia, Illinois?

The current PM10 levels in Centralia, Illinois are 14.182 μg/m3.

What are the current sulfur dioxide (SO2) levels at Centralia, Illinois?

The current sulfur dioxide (SO2) levels in Centralia, Illinois are 0.562 ppb.

What are the current ozone (O3) levels at Centralia, Illinois?

The current ozone (O3) levels at Centralia, Illinois is 20.099 ppm.

What are the current nitrogen dioxide (NO2) levels at Centralia, Illinois?

The current nitrogen dioxide (NO2) levels at Centralia, Illinois is 2.95 ppb.

Real-time air quality index in Centralia, Illinois today

Q: What are the current PM2.5 levels in Centralia, Illinois?

The measured PM2.5 levels in Centralia, Illinois at present are 3.038 μg/m3.

Stay updated with real-time air quality in Centralia, 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

Centralia, Illinois

Last updated: ... (Local time)

Common air pollutants in Centralia, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.04 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

14.18 μg/m³

155

255

425

605+

Ozone (O₃)

20.10 ppb

201

201+

Sulfur Dioxide (SO₂)

0.56 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.95 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.15 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Centralia, Illinois

Get Live Pollen Counts

Centralia, Illinois

Scroll To Air Quality Map

Track live Centralia, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-20T12:00:00.000Z	22 \| good	3.566 \| good	15.248 \| good	15.519 \| good	0.606 \| good	7.125 \| good	0.193 \| good
2025-10-20T13:00:00.000Z	22 \| good	3.96 \| good	17.858 \| good	16.316 \| good	0.589 \| good	8.64 \| good	0.212 \| good
2025-10-20T14:00:00.000Z	27 \| good	4.762 \| good	19.899 \| good	21.375 \| good	0.57 \| good	6.07 \| good	0.254 \| good
2025-10-20T15:00:00.000Z	23 \| good	4.233 \| good	21.425 \| good	24.972 \| good	0.86 \| good	4.525 \| good	0.185 \| good
2025-10-20T16:00:00.000Z	28 \| good	3.509 \| good	16.015 \| good	29.847 \| good	1.127 \| good	3.038 \| good	0.172 \| good
2025-10-20T17:00:00.000Z	29 \| good	3.167 \| good	13.876 \| good	31.13 \| good	0.763 \| good	1.763 \| good	0.152 \| good
2025-10-20T18:00:00.000Z	31 \| good	3.211 \| good	14.166 \| good	33.967 \| good	0.779 \| good	1.926 \| good	0.143 \| good
2025-10-20T19:00:00.000Z	33 \| good	3.762 \| good	16.484 \| good	36.36 \| good	0.706 \| good	1.976 \| good	0.135 \| good
2025-10-20T20:00:00.000Z	36 \| good	5.302 \| good	23.686 \| good	39.085 \| good	0.722 \| good	1.957 \| good	0.164 \| good
2025-10-20T21:00:00.000Z	39 \| good	3.924 \| good	17.107 \| good	41.932 \| good	0.808 \| good	2.24 \| good	0.142 \| good
2025-10-20T22:00:00.000Z	39 \| good	4 \| good	16.992 \| good	41.644 \| good	0.855 \| good	2.409 \| good	0.143 \| good
2025-10-20T23:00:00.000Z	38 \| good	3.415 \| good	15.359 \| good	41.163 \| good	0.836 \| good	2.711 \| good	0.154 \| good
2025-10-21T00:00:00.000Z	37 \| good	3.675 \| good	14.277 \| good	39.64 \| good	0.927 \| good	2.588 \| good	0.167 \| good
2025-10-21T01:00:00.000Z	35 \| good	4.007 \| good	18.493 \| good	37.617 \| good	0.845 \| good	2.746 \| good	0.156 \| good
2025-10-21T02:00:00.000Z	35 \| good	4.164 \| good	17.389 \| good	37.768 \| good	0.758 \| good	3.234 \| good	0.146 \| good
2025-10-21T03:00:00.000Z	34 \| good	4.659 \| good	20.136 \| good	37.396 \| good	0.741 \| good	1.615 \| good	0.128 \| good
2025-10-21T04:00:00.000Z	32 \| good	4.792 \| good	20.453 \| good	34.868 \| good	1.142 \| good	2.682 \| good	0.159 \| good
2025-10-21T05:00:00.000Z	29 \| good	4.358 \| good	18.96 \| good	31.308 \| good	1.857 \| good	2.444 \| good	0.145 \| good
2025-10-21T06:00:00.000Z	28 \| good	5.305 \| good	24.01 \| good	30.265 \| good	2.371 \| good	2.819 \| good	0.149 \| good
2025-10-21T07:00:00.000Z	29 \| good	5.085 \| good	24.798 \| good	31.248 \| good	1.071 \| good	2.797 \| good	0.15 \| good
2025-10-21T08:00:00.000Z	27 \| good	4.483 \| good	20.97 \| good	28.963 \| good	0.591 \| good	2.772 \| good	0.145 \| good
2025-10-21T09:00:00.000Z	25 \| good	4.339 \| good	17.85 \| good	27.008 \| good	0.388 \| good	4.083 \| good	0.152 \| good
2025-10-21T10:00:00.000Z	22 \| good	4.438 \| good	18.346 \| good	22.889 \| good	0.391 \| good	3.151 \| good	0.151 \| good
2025-10-21T11:00:00.000Z	27 \| good	4.841 \| good	21.063 \| good	20.508 \| good	0.453 \| good	4.131 \| good	0.155 \| good
2025-10-21T12:00:00.000Z	22 \| good	4.008 \| good	18.047 \| good	21.519 \| good	0.517 \| good	5.349 \| good	0.187 \| good
2025-10-21T13:00:00.000Z	21 \| good	3.413 \| good	16.075 \| good	23.126 \| good	0.549 \| good	5.264 \| good	0.234 \| good
2025-10-21T14:00:00.000Z	23 \| good	3.252 \| good	14.212 \| good	24.756 \| good	0.74 \| good	4.903 \| good	0.248 \| good
2025-10-21T15:00:00.000Z	25 \| good	3.394 \| good	13.175 \| good	27.294 \| good	1.161 \| good	4.064 \| good	0.187 \| good
2025-10-21T16:00:00.000Z	27 \| good	3.792 \| good	15.615 \| good	28.913 \| good	0.827 \| good	2.999 \| good	0.153 \| good
2025-10-21T17:00:00.000Z	30 \| good	3.335 \| good	16.157 \| good	32.389 \| good	0.691 \| good	2.174 \| good	0.16 \| good
2025-10-21T18:00:00.000Z	32 \| good	2.482 \| good	10.326 \| good	34.845 \| good	0.607 \| good	1.737 \| good	0.133 \| good
2025-10-21T19:00:00.000Z	34 \| good	2.461 \| good	10.018 \| good	36.76 \| good	0.545 \| good	1.789 \| good	0.158 \| good
2025-10-21T20:00:00.000Z	34 \| good	2.219 \| good	10.397 \| good	37.315 \| good	0.489 \| good	1.658 \| good	0.16 \| good
2025-10-21T21:00:00.000Z	34 \| good	2.546 \| good	11.796 \| good	36.666 \| good	0.411 \| good	1.565 \| good	0.129 \| good
2025-10-21T22:00:00.000Z	34 \| good	2.399 \| good	12.542 \| good	36.722 \| good	0.465 \| good	1.829 \| good	0.119 \| good
2025-10-21T23:00:00.000Z	31 \| good	2.393 \| good	12.184 \| good	33.442 \| good	0.468 \| good	2.034 \| good	0.121 \| good
2025-10-22T00:00:00.000Z	30 \| good	2.511 \| good	10.479 \| good	31.693 \| good	0.467 \| good	2.808 \| good	0.123 \| good
2025-10-22T01:00:00.000Z	27 \| good	1.924 \| good	10.559 \| good	29.046 \| good	0.494 \| good	3.189 \| good	0.152 \| good
2025-10-22T02:00:00.000Z	25 \| good	2.268 \| good	7.385 \| good	27.484 \| good	0.524 \| good	3.895 \| good	0.149 \| good
2025-10-22T03:00:00.000Z	21 \| good	1.892 \| good	7.864 \| good	22.77 \| good	0.526 \| good	2.969 \| good	0.138 \| good
2025-10-22T04:00:00.000Z	23 \| good	2.517 \| good	11.792 \| good	24.865 \| good	0.536 \| good	4.173 \| good	0.167 \| good
2025-10-22T05:00:00.000Z	23 \| good	2.439 \| good	9.991 \| good	24.526 \| good	0.571 \| good	3.868 \| good	0.172 \| good
2025-10-22T06:00:00.000Z	22 \| good	2.595 \| good	12.613 \| good	24.184 \| good	0.567 \| good	3.757 \| good	0.153 \| good
2025-10-22T07:00:00.000Z	22 \| good	2.819 \| good	12.97 \| good	23.555 \| good	0.566 \| good	3.622 \| good	0.163 \| good
2025-10-22T08:00:00.000Z	20 \| good	2.747 \| good	15.105 \| good	21.527 \| good	0.577 \| good	3.487 \| good	0.161 \| good
2025-10-22T09:00:00.000Z	19 \| good	2.932 \| good	13.58 \| good	21.288 \| good	0.654 \| good	3.402 \| good	0.148 \| good
2025-10-22T10:00:00.000Z	19 \| good	3.038 \| good	14.182 \| good	20.099 \| good	0.562 \| good	2.95 \| good	0.148 \| good
2025-10-22T11:00:00.000Z	19 \| good	3.038 \| good	14.182 \| good	20.099 \| good	0.562 \| good	2.95 \| good	0.148 \| good
2025-10-22T12:00:00.000Z	22 \| good	4.295 \| good	18.83 \| good	17.69 \| good	0.536 \| good	2.352 \| good	0.123 \| good
2025-10-22T13:00:00.000Z	22 \| good	3.799 \| good	16.713 \| good	20.441 \| good	0.566 \| good	2.215 \| good	0.124 \| good
2025-10-22T14:00:00.000Z	23 \| good	2.734 \| good	11.32 \| good	25.382 \| good	0.596 \| good	2.078 \| good	0.125 \| good
2025-10-22T15:00:00.000Z	26 \| good	2.266 \| good	9.165 \| good	27.74 \| good	0.626 \| good	1.941 \| good	0.126 \| good
2025-10-22T16:00:00.000Z	28 \| good	1.938 \| good	7.969 \| good	29.509 \| good	0.626 \| good	1.713 \| good	0.124 \| good
2025-10-22T17:00:00.000Z	29 \| good	1.412 \| good	5.487 \| good	31.407 \| good	0.625 \| good	1.485 \| good	0.123 \| good
2025-10-22T18:00:00.000Z	31 \| good	1.057 \| good	4.393 \| good	32.564 \| good	0.625 \| good	1.256 \| good	0.122 \| good
2025-10-22T19:00:00.000Z	31 \| good	1.474 \| good	6.007 \| good	33.644 \| good	0.611 \| good	1.169 \| good	0.122 \| good
2025-10-22T20:00:00.000Z	31 \| good	1.894 \| good	7.884 \| good	34.114 \| good	0.598 \| good	1.082 \| good	0.122 \| good
2025-10-22T21:00:00.000Z	29 \| good	2.46 \| good	9.908 \| good	30.978 \| good	0.584 \| good	0.994 \| good	0.122 \| good
2025-10-22T22:00:00.000Z	26 \| good	2.827 \| good	11.743 \| good	27.774 \| good	0.593 \| good	1.769 \| good	0.13 \| good
2025-10-22T23:00:00.000Z	22 \| good	3.083 \| good	13.446 \| good	24.343 \| good	0.601 \| good	2.543 \| good	0.138 \| good
2025-10-23T00:00:00.000Z	21 \| good	2.698 \| good	11.18 \| good	22.944 \| good	0.61 \| good	3.317 \| good	0.145 \| good
2025-10-23T01:00:00.000Z	20 \| good	2.236 \| good	8.887 \| good	21.603 \| good	0.637 \| good	3.993 \| good	0.153 \| good
2025-10-23T02:00:00.000Z	19 \| good	0.814 \| good	3.121 \| good	19.608 \| good	0.664 \| good	4.668 \| good	0.16 \| good
2025-10-23T03:00:00.000Z	16 \| good	0.887 \| good	3.427 \| good	17.31 \| good	0.69 \| good	5.343 \| good	0.168 \| good
2025-10-23T04:00:00.000Z	14 \| good	1.313 \| good	5.072 \| good	15.197 \| good	0.632 \| good	5.152 \| good	0.166 \| good
2025-10-23T05:00:00.000Z	13 \| good	0.866 \| good	3.246 \| good	14.075 \| good	0.574 \| good	4.962 \| good	0.164 \| good
2025-10-23T06:00:00.000Z	12 \| good	0.741 \| good	2.878 \| good	12.953 \| good	0.516 \| good	4.771 \| good	0.162 \| good
2025-10-23T07:00:00.000Z	12 \| good	0.464 \| good	1.735 \| good	12.799 \| good	0.456 \| good	4.199 \| good	0.155 \| good
2025-10-23T08:00:00.000Z	13 \| good	0.633 \| good	2.067 \| good	13.802 \| good	0.396 \| good	3.627 \| good	0.148 \| good
2025-10-23T09:00:00.000Z	13 \| good	0.174 \| good	0.093 \| good	14.09 \| good	0.336 \| good	3.055 \| good	0.141 \| good
2025-10-23T10:00:00.000Z	11 \| good	0.501 \| good	2 \| good	12.285 \| good	0.33 \| good	3.333 \| good	0.142 \| good
2025-10-23T11:00:00.000Z	10 \| good	1.192 \| good	5 \| good	11.065 \| good	0.325 \| good	3.611 \| good	0.144 \| good
2025-10-23T12:00:00.000Z	11 \| good	1.798 \| good	7.58 \| good	10.836 \| good	0.319 \| good	3.889 \| good	0.146 \| good
2025-10-23T13:00:00.000Z	16 \| good	2.591 \| good	10.607 \| good	11.467 \| good	0.334 \| good	3.372 \| good	0.147 \| good
2025-10-23T14:00:00.000Z	17 \| good	3.344 \| good	14.707 \| good	17.802 \| good	0.349 \| good	2.856 \| good	0.147 \| good
2025-10-23T15:00:00.000Z	22 \| good	3.082 \| good	13.213 \| good	23.901 \| good	0.363 \| good	2.339 \| good	0.148 \| good
2025-10-23T16:00:00.000Z	27 \| good	3.183 \| good	13.87 \| good	29.116 \| good	0.388 \| good	1.843 \| good	0.142 \| good
2025-10-23T17:00:00.000Z	31 \| good	2.594 \| good	10.384 \| good	32.816 \| good	0.412 \| good	1.348 \| good	0.135 \| good
2025-10-23T18:00:00.000Z	33 \| good	2.421 \| good	10 \| good	35.6 \| good	0.436 \| good	0.852 \| good	0.128 \| good
2025-10-23T19:00:00.000Z	35 \| good	2.885 \| good	11.94 \| good	37.59 \| good	0.466 \| good	0.884 \| good	0.128 \| good
2025-10-23T20:00:00.000Z	35 \| good	2.867 \| good	11.735 \| good	37.542 \| good	0.495 \| good	0.916 \| good	0.129 \| good
2025-10-23T21:00:00.000Z	34 \| good	1.971 \| good	8.072 \| good	36.874 \| good	0.524 \| good	0.948 \| good	0.129 \| good
2025-10-23T22:00:00.000Z	32 \| good	3.289 \| good	14.248 \| good	35.083 \| good	0.512 \| good	2.393 \| good	0.143 \| good
2025-10-23T23:00:00.000Z	30 \| good	4.349 \| good	18.897 \| good	31.943 \| good	0.5 \| good	3.839 \| good	0.158 \| good
2025-10-24T00:00:00.000Z	33 \| good	6.197 \| good	27.413 \| good	27.134 \| good	0.487 \| good	5.284 \| good	0.173 \| good
2025-10-24T01:00:00.000Z	33 \| good	6.445 \| good	28.848 \| good	23.85 \| good	0.491 \| good	6.069 \| good	0.182 \| good
2025-10-24T02:00:00.000Z	33 \| good	6.091 \| good	26.987 \| good	23.033 \| good	0.494 \| good	6.854 \| good	0.19 \| good
2025-10-24T03:00:00.000Z	33 \| good	5.913 \| good	26.053 \| good	21.414 \| good	0.498 \| good	7.639 \| good	0.199 \| good
2025-10-24T04:00:00.000Z	27 \| good	5.027 \| good	21.666 \| good	20.601 \| good	0.477 \| good	8.09 \| good	0.203 \| good
2025-10-24T05:00:00.000Z	19 \| good	3.235 \| good	13.692 \| good	20.332 \| good	0.457 \| good	8.541 \| good	0.208 \| good
2025-10-24T06:00:00.000Z	44 \| good	8.484 \| good	8.669 \| good	17.444 \| good	0.441 \| good	9.027 \| good	0.213 \| good
2025-10-24T07:00:00.000Z	18 \| good	1.977 \| good	8 \| good	18.897 \| good	0.41 \| good	8.427 \| good	0.206 \| good
2025-10-24T08:00:00.000Z	17 \| good	2.055 \| good	8.033 \| good	18.056 \| good	0.384 \| good	7.862 \| good	0.2 \| good
2025-10-24T09:00:00.000Z	16 \| good	1.923 \| good	7.97 \| good	16.974 \| good	0.359 \| good	7.296 \| good	0.194 \| good
2025-10-24T10:00:00.000Z	13 \| good	2.249 \| good	9.072 \| good	14.171 \| good	0.353 \| good	7.042 \| good	0.191 \| good
2025-10-24T11:00:00.000Z	22 \| good	3.791 \| good	16.749 \| good	10.687 \| good	0.347 \| good	6.789 \| good	0.189 \| good

Centralia

Empower business decisions with accurate air quality data

Centralia, Illinois air quality map: Real-time AQI near you

0.16ppm

How accurate is Illinois, USA air quality data?

Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How frequently is the air quality data for Centralia, Illinois updated?

Air quality data for Centralia, Illinois is updated on an hourly basis.

When did Centralia, Illinois experience the worst air quality in the last 24 hours?

The worst air quality in Centralia, Illinois was recorded at 10:00:00 on 2025-10-21.

When did Centralia, Illinois have its best air quality in the last 24 hours?

The best air quality in Centralia, Illinois was recorded at 10:00:00 on 2025-10-22.

What is the real-time air quality index for Centralia, Illinois?

The real-time air quality index in Centralia, Illinois is 19, currently categorized as Good.

Which pollutant is found most often in Centralia, Illinois?

The most common pollutant in Centralia, Illinois is O3.

What can I do if the air quality in Centralia, Illinois is poor?

If the air quality in Centralia, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Centralia, Illinois?

The measured PM_2.5 levels in Centralia, Illinois at present are 3.038 μg/m³.

What are the current PM₁₀ levels at Centralia, Illinois?

The current PM₁₀ levels in Centralia, Illinois are 14.182 μg/m³.

What are the current carbon monoxide (CO) levels at Centralia, Illinois?

The current carbon monoxide (CO) level in Centralia, Illinois is 0.148 ppm.

What are the current sulfur dioxide (SO₂) levels at Centralia, Illinois?

The current sulfur dioxide (SO₂) levels in Centralia, Illinois are 0.562 ppb.

What are the current ozone (O₃) levels at Centralia, Illinois?

The current ozone (O₃) levels at Centralia, Illinois is 20.099 ppm.

What are the current nitrogen dioxide (NO₂) levels at Centralia, Illinois?

The current nitrogen dioxide (NO₂) levels at Centralia, Illinois is 2.95 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-20T12:00:00.000Z	22 \| good	3.566 \| good	15.248 \| good	15.519 \| good	0.606 \| good	7.125 \| good	0.193 \| good
2025-10-20T13:00:00.000Z	22 \| good	3.96 \| good	17.858 \| good	16.316 \| good	0.589 \| good	8.64 \| good	0.212 \| good
2025-10-20T14:00:00.000Z	27 \| good	4.762 \| good	19.899 \| good	21.375 \| good	0.57 \| good	6.07 \| good	0.254 \| good
2025-10-20T15:00:00.000Z	23 \| good	4.233 \| good	21.425 \| good	24.972 \| good	0.86 \| good	4.525 \| good	0.185 \| good
2025-10-20T16:00:00.000Z	28 \| good	3.509 \| good	16.015 \| good	29.847 \| good	1.127 \| good	3.038 \| good	0.172 \| good
2025-10-20T17:00:00.000Z	29 \| good	3.167 \| good	13.876 \| good	31.13 \| good	0.763 \| good	1.763 \| good	0.152 \| good
2025-10-20T18:00:00.000Z	31 \| good	3.211 \| good	14.166 \| good	33.967 \| good	0.779 \| good	1.926 \| good	0.143 \| good
2025-10-20T19:00:00.000Z	33 \| good	3.762 \| good	16.484 \| good	36.36 \| good	0.706 \| good	1.976 \| good	0.135 \| good
2025-10-20T20:00:00.000Z	36 \| good	5.302 \| good	23.686 \| good	39.085 \| good	0.722 \| good	1.957 \| good	0.164 \| good
2025-10-20T21:00:00.000Z	39 \| good	3.924 \| good	17.107 \| good	41.932 \| good	0.808 \| good	2.24 \| good	0.142 \| good
2025-10-20T22:00:00.000Z	39 \| good	4 \| good	16.992 \| good	41.644 \| good	0.855 \| good	2.409 \| good	0.143 \| good
2025-10-20T23:00:00.000Z	38 \| good	3.415 \| good	15.359 \| good	41.163 \| good	0.836 \| good	2.711 \| good	0.154 \| good
2025-10-21T00:00:00.000Z	37 \| good	3.675 \| good	14.277 \| good	39.64 \| good	0.927 \| good	2.588 \| good	0.167 \| good
2025-10-21T01:00:00.000Z	35 \| good	4.007 \| good	18.493 \| good	37.617 \| good	0.845 \| good	2.746 \| good	0.156 \| good
2025-10-21T02:00:00.000Z	35 \| good	4.164 \| good	17.389 \| good	37.768 \| good	0.758 \| good	3.234 \| good	0.146 \| good
2025-10-21T03:00:00.000Z	34 \| good	4.659 \| good	20.136 \| good	37.396 \| good	0.741 \| good	1.615 \| good	0.128 \| good
2025-10-21T04:00:00.000Z	32 \| good	4.792 \| good	20.453 \| good	34.868 \| good	1.142 \| good	2.682 \| good	0.159 \| good
2025-10-21T05:00:00.000Z	29 \| good	4.358 \| good	18.96 \| good	31.308 \| good	1.857 \| good	2.444 \| good	0.145 \| good
2025-10-21T06:00:00.000Z	28 \| good	5.305 \| good	24.01 \| good	30.265 \| good	2.371 \| good	2.819 \| good	0.149 \| good
2025-10-21T07:00:00.000Z	29 \| good	5.085 \| good	24.798 \| good	31.248 \| good	1.071 \| good	2.797 \| good	0.15 \| good
2025-10-21T08:00:00.000Z	27 \| good	4.483 \| good	20.97 \| good	28.963 \| good	0.591 \| good	2.772 \| good	0.145 \| good
2025-10-21T09:00:00.000Z	25 \| good	4.339 \| good	17.85 \| good	27.008 \| good	0.388 \| good	4.083 \| good	0.152 \| good
2025-10-21T10:00:00.000Z	22 \| good	4.438 \| good	18.346 \| good	22.889 \| good	0.391 \| good	3.151 \| good	0.151 \| good
2025-10-21T11:00:00.000Z	27 \| good	4.841 \| good	21.063 \| good	20.508 \| good	0.453 \| good	4.131 \| good	0.155 \| good
2025-10-21T12:00:00.000Z	22 \| good	4.008 \| good	18.047 \| good	21.519 \| good	0.517 \| good	5.349 \| good	0.187 \| good
2025-10-21T13:00:00.000Z	21 \| good	3.413 \| good	16.075 \| good	23.126 \| good	0.549 \| good	5.264 \| good	0.234 \| good
2025-10-21T14:00:00.000Z	23 \| good	3.252 \| good	14.212 \| good	24.756 \| good	0.74 \| good	4.903 \| good	0.248 \| good
2025-10-21T15:00:00.000Z	25 \| good	3.394 \| good	13.175 \| good	27.294 \| good	1.161 \| good	4.064 \| good	0.187 \| good
2025-10-21T16:00:00.000Z	27 \| good	3.792 \| good	15.615 \| good	28.913 \| good	0.827 \| good	2.999 \| good	0.153 \| good
2025-10-21T17:00:00.000Z	30 \| good	3.335 \| good	16.157 \| good	32.389 \| good	0.691 \| good	2.174 \| good	0.16 \| good
2025-10-21T18:00:00.000Z	32 \| good	2.482 \| good	10.326 \| good	34.845 \| good	0.607 \| good	1.737 \| good	0.133 \| good
2025-10-21T19:00:00.000Z	34 \| good	2.461 \| good	10.018 \| good	36.76 \| good	0.545 \| good	1.789 \| good	0.158 \| good
2025-10-21T20:00:00.000Z	34 \| good	2.219 \| good	10.397 \| good	37.315 \| good	0.489 \| good	1.658 \| good	0.16 \| good
2025-10-21T21:00:00.000Z	34 \| good	2.546 \| good	11.796 \| good	36.666 \| good	0.411 \| good	1.565 \| good	0.129 \| good
2025-10-21T22:00:00.000Z	34 \| good	2.399 \| good	12.542 \| good	36.722 \| good	0.465 \| good	1.829 \| good	0.119 \| good
2025-10-21T23:00:00.000Z	31 \| good	2.393 \| good	12.184 \| good	33.442 \| good	0.468 \| good	2.034 \| good	0.121 \| good
2025-10-22T00:00:00.000Z	30 \| good	2.511 \| good	10.479 \| good	31.693 \| good	0.467 \| good	2.808 \| good	0.123 \| good
2025-10-22T01:00:00.000Z	27 \| good	1.924 \| good	10.559 \| good	29.046 \| good	0.494 \| good	3.189 \| good	0.152 \| good
2025-10-22T02:00:00.000Z	25 \| good	2.268 \| good	7.385 \| good	27.484 \| good	0.524 \| good	3.895 \| good	0.149 \| good
2025-10-22T03:00:00.000Z	21 \| good	1.892 \| good	7.864 \| good	22.77 \| good	0.526 \| good	2.969 \| good	0.138 \| good
2025-10-22T04:00:00.000Z	23 \| good	2.517 \| good	11.792 \| good	24.865 \| good	0.536 \| good	4.173 \| good	0.167 \| good
2025-10-22T05:00:00.000Z	23 \| good	2.439 \| good	9.991 \| good	24.526 \| good	0.571 \| good	3.868 \| good	0.172 \| good
2025-10-22T06:00:00.000Z	22 \| good	2.595 \| good	12.613 \| good	24.184 \| good	0.567 \| good	3.757 \| good	0.153 \| good
2025-10-22T07:00:00.000Z	22 \| good	2.819 \| good	12.97 \| good	23.555 \| good	0.566 \| good	3.622 \| good	0.163 \| good
2025-10-22T08:00:00.000Z	20 \| good	2.747 \| good	15.105 \| good	21.527 \| good	0.577 \| good	3.487 \| good	0.161 \| good
2025-10-22T09:00:00.000Z	19 \| good	2.932 \| good	13.58 \| good	21.288 \| good	0.654 \| good	3.402 \| good	0.148 \| good
2025-10-22T10:00:00.000Z	19 \| good	3.038 \| good	14.182 \| good	20.099 \| good	0.562 \| good	2.95 \| good	0.148 \| good
2025-10-22T11:00:00.000Z	19 \| good	3.038 \| good	14.182 \| good	20.099 \| good	0.562 \| good	2.95 \| good	0.148 \| good
2025-10-22T12:00:00.000Z	22 \| good	4.295 \| good	18.83 \| good	17.69 \| good	0.536 \| good	2.352 \| good	0.123 \| good
2025-10-22T13:00:00.000Z	22 \| good	3.799 \| good	16.713 \| good	20.441 \| good	0.566 \| good	2.215 \| good	0.124 \| good
2025-10-22T14:00:00.000Z	23 \| good	2.734 \| good	11.32 \| good	25.382 \| good	0.596 \| good	2.078 \| good	0.125 \| good
2025-10-22T15:00:00.000Z	26 \| good	2.266 \| good	9.165 \| good	27.74 \| good	0.626 \| good	1.941 \| good	0.126 \| good
2025-10-22T16:00:00.000Z	28 \| good	1.938 \| good	7.969 \| good	29.509 \| good	0.626 \| good	1.713 \| good	0.124 \| good
2025-10-22T17:00:00.000Z	29 \| good	1.412 \| good	5.487 \| good	31.407 \| good	0.625 \| good	1.485 \| good	0.123 \| good
2025-10-22T18:00:00.000Z	31 \| good	1.057 \| good	4.393 \| good	32.564 \| good	0.625 \| good	1.256 \| good	0.122 \| good
2025-10-22T19:00:00.000Z	31 \| good	1.474 \| good	6.007 \| good	33.644 \| good	0.611 \| good	1.169 \| good	0.122 \| good
2025-10-22T20:00:00.000Z	31 \| good	1.894 \| good	7.884 \| good	34.114 \| good	0.598 \| good	1.082 \| good	0.122 \| good
2025-10-22T21:00:00.000Z	29 \| good	2.46 \| good	9.908 \| good	30.978 \| good	0.584 \| good	0.994 \| good	0.122 \| good
2025-10-22T22:00:00.000Z	26 \| good	2.827 \| good	11.743 \| good	27.774 \| good	0.593 \| good	1.769 \| good	0.13 \| good
2025-10-22T23:00:00.000Z	22 \| good	3.083 \| good	13.446 \| good	24.343 \| good	0.601 \| good	2.543 \| good	0.138 \| good
2025-10-23T00:00:00.000Z	21 \| good	2.698 \| good	11.18 \| good	22.944 \| good	0.61 \| good	3.317 \| good	0.145 \| good
2025-10-23T01:00:00.000Z	20 \| good	2.236 \| good	8.887 \| good	21.603 \| good	0.637 \| good	3.993 \| good	0.153 \| good
2025-10-23T02:00:00.000Z	19 \| good	0.814 \| good	3.121 \| good	19.608 \| good	0.664 \| good	4.668 \| good	0.16 \| good
2025-10-23T03:00:00.000Z	16 \| good	0.887 \| good	3.427 \| good	17.31 \| good	0.69 \| good	5.343 \| good	0.168 \| good
2025-10-23T04:00:00.000Z	14 \| good	1.313 \| good	5.072 \| good	15.197 \| good	0.632 \| good	5.152 \| good	0.166 \| good
2025-10-23T05:00:00.000Z	13 \| good	0.866 \| good	3.246 \| good	14.075 \| good	0.574 \| good	4.962 \| good	0.164 \| good
2025-10-23T06:00:00.000Z	12 \| good	0.741 \| good	2.878 \| good	12.953 \| good	0.516 \| good	4.771 \| good	0.162 \| good
2025-10-23T07:00:00.000Z	12 \| good	0.464 \| good	1.735 \| good	12.799 \| good	0.456 \| good	4.199 \| good	0.155 \| good
2025-10-23T08:00:00.000Z	13 \| good	0.633 \| good	2.067 \| good	13.802 \| good	0.396 \| good	3.627 \| good	0.148 \| good
2025-10-23T09:00:00.000Z	13 \| good	0.174 \| good	0.093 \| good	14.09 \| good	0.336 \| good	3.055 \| good	0.141 \| good
2025-10-23T10:00:00.000Z	11 \| good	0.501 \| good	2 \| good	12.285 \| good	0.33 \| good	3.333 \| good	0.142 \| good
2025-10-23T11:00:00.000Z	10 \| good	1.192 \| good	5 \| good	11.065 \| good	0.325 \| good	3.611 \| good	0.144 \| good
2025-10-23T12:00:00.000Z	11 \| good	1.798 \| good	7.58 \| good	10.836 \| good	0.319 \| good	3.889 \| good	0.146 \| good
2025-10-23T13:00:00.000Z	16 \| good	2.591 \| good	10.607 \| good	11.467 \| good	0.334 \| good	3.372 \| good	0.147 \| good
2025-10-23T14:00:00.000Z	17 \| good	3.344 \| good	14.707 \| good	17.802 \| good	0.349 \| good	2.856 \| good	0.147 \| good
2025-10-23T15:00:00.000Z	22 \| good	3.082 \| good	13.213 \| good	23.901 \| good	0.363 \| good	2.339 \| good	0.148 \| good
2025-10-23T16:00:00.000Z	27 \| good	3.183 \| good	13.87 \| good	29.116 \| good	0.388 \| good	1.843 \| good	0.142 \| good
2025-10-23T17:00:00.000Z	31 \| good	2.594 \| good	10.384 \| good	32.816 \| good	0.412 \| good	1.348 \| good	0.135 \| good
2025-10-23T18:00:00.000Z	33 \| good	2.421 \| good	10 \| good	35.6 \| good	0.436 \| good	0.852 \| good	0.128 \| good
2025-10-23T19:00:00.000Z	35 \| good	2.885 \| good	11.94 \| good	37.59 \| good	0.466 \| good	0.884 \| good	0.128 \| good
2025-10-23T20:00:00.000Z	35 \| good	2.867 \| good	11.735 \| good	37.542 \| good	0.495 \| good	0.916 \| good	0.129 \| good
2025-10-23T21:00:00.000Z	34 \| good	1.971 \| good	8.072 \| good	36.874 \| good	0.524 \| good	0.948 \| good	0.129 \| good
2025-10-23T22:00:00.000Z	32 \| good	3.289 \| good	14.248 \| good	35.083 \| good	0.512 \| good	2.393 \| good	0.143 \| good
2025-10-23T23:00:00.000Z	30 \| good	4.349 \| good	18.897 \| good	31.943 \| good	0.5 \| good	3.839 \| good	0.158 \| good
2025-10-24T00:00:00.000Z	33 \| good	6.197 \| good	27.413 \| good	27.134 \| good	0.487 \| good	5.284 \| good	0.173 \| good
2025-10-24T01:00:00.000Z	33 \| good	6.445 \| good	28.848 \| good	23.85 \| good	0.491 \| good	6.069 \| good	0.182 \| good
2025-10-24T02:00:00.000Z	33 \| good	6.091 \| good	26.987 \| good	23.033 \| good	0.494 \| good	6.854 \| good	0.19 \| good
2025-10-24T03:00:00.000Z	33 \| good	5.913 \| good	26.053 \| good	21.414 \| good	0.498 \| good	7.639 \| good	0.199 \| good
2025-10-24T04:00:00.000Z	27 \| good	5.027 \| good	21.666 \| good	20.601 \| good	0.477 \| good	8.09 \| good	0.203 \| good
2025-10-24T05:00:00.000Z	19 \| good	3.235 \| good	13.692 \| good	20.332 \| good	0.457 \| good	8.541 \| good	0.208 \| good
2025-10-24T06:00:00.000Z	44 \| good	8.484 \| good	8.669 \| good	17.444 \| good	0.441 \| good	9.027 \| good	0.213 \| good
2025-10-24T07:00:00.000Z	18 \| good	1.977 \| good	8 \| good	18.897 \| good	0.41 \| good	8.427 \| good	0.206 \| good
2025-10-24T08:00:00.000Z	17 \| good	2.055 \| good	8.033 \| good	18.056 \| good	0.384 \| good	7.862 \| good	0.2 \| good
2025-10-24T09:00:00.000Z	16 \| good	1.923 \| good	7.97 \| good	16.974 \| good	0.359 \| good	7.296 \| good	0.194 \| good
2025-10-24T10:00:00.000Z	13 \| good	2.249 \| good	9.072 \| good	14.171 \| good	0.353 \| good	7.042 \| good	0.191 \| good
2025-10-24T11:00:00.000Z	22 \| good	3.791 \| good	16.749 \| good	10.687 \| good	0.347 \| good	6.789 \| good	0.189 \| good

Real-time air quality index in Centralia, Illinois today

Common air pollutants in Centralia, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Centralia, Illinois air quality forecast and history

Empower business decisions with accurate air quality data

Centralia, Illinois air quality map: Real-time AQI near you

Air quality in nearby cities

Mount Vernon, Illinois

Shiloh, Illinois

O'Fallon, Illinois

Troy, Illinois

Belleville, Illinois

Swansea, Illinois

How accurate is Illinois, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently is the air quality data for Centralia, Illinois updated?

When did Centralia, Illinois experience the worst air quality in the last 24 hours?

When did Centralia, Illinois have its best air quality in the last 24 hours?

What is the real-time air quality index for Centralia, Illinois?

Which pollutant is found most often in Centralia, Illinois?

What can I do if the air quality in Centralia, Illinois is poor?

What are the current PM2.5 levels in Centralia, Illinois?

What are the current PM10 levels at Centralia, Illinois?

What are the current carbon monoxide (CO) levels at Centralia, Illinois?

What are the current sulfur dioxide (SO2) levels at Centralia, Illinois?

What are the current ozone (O3) levels at Centralia, Illinois?

What are the current nitrogen dioxide (NO2) levels at Centralia, Illinois?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in Centralia, Illinois?

What are the current PM₁₀ levels at Centralia, Illinois?

What are the current sulfur dioxide (SO₂) levels at Centralia, Illinois?

What are the current ozone (O₃) levels at Centralia, Illinois?

What are the current nitrogen dioxide (NO₂) levels at Centralia, Illinois?