What is the PM10 level in Decatur, Illinois at the moment?

The PM10 concentration in Decatur, Illinois is 23.209 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Decatur, Illinois at the moment?

Currently, Decatur, Illinois has a sulfur dioxide (SO2) concentration of 0.65 ppb.

What is the ozone (O3) level in Decatur, Illinois at the moment?

The current ozone (O3) level in Decatur, Illinois at the moment is 35.043 ppm.

What is the nitrogen dioxide (NO2) level in Decatur, Illinois at the moment?

Nitrogen dioxide (NO2) level in Decatur, Illinois at the moment is 2.574 ppb.

Real-time air quality index in Decatur, Illinois today

Name: Live air pollution levels in Decatur, Illinois today
Creator: Ambee

Stay updated with real-time air quality in Decatur, 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

Decatur, Illinois

Last updated: ... (Local time)

Major air pollutants in Decatur, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.44 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

23.21 μg/m³

155

255

425

605+

Ozone (O₃)

35.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.65 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.57 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 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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Decatur, Illinois

Scroll To Air Quality Map

Track live Decatur, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T07:00:00.000Z	71 \| moderate	19.512 \| fine	86.596 \| fine	42.036 \| good	1.059 \| good	6.177 \| good	0.245 \| good
2025-06-04T08:00:00.000Z	69 \| moderate	19.413 \| fine	86.605 \| fine	40.015 \| good	1.053 \| good	6.182 \| good	0.234 \| good
2025-06-04T09:00:00.000Z	69 \| moderate	19.21 \| fine	84.602 \| fine	36.055 \| good	1.037 \| good	2.962 \| good	0.191 \| good
2025-06-04T10:00:00.000Z	66 \| moderate	17.134 \| fine	76.69 \| fine	38.017 \| good	0.847 \| good	4.224 \| good	0.205 \| good
2025-06-04T11:00:00.000Z	54 \| moderate	10.511 \| good	47.042 \| good	34.044 \| good	0.808 \| good	9.681 \| good	0.228 \| good
2025-06-04T12:00:00.000Z	38 \| good	6.896 \| good	30.971 \| good	34.054 \| good	0.823 \| good	12.934 \| good	0.234 \| good
2025-06-04T13:00:00.000Z	44 \| good	8.444 \| good	37.178 \| good	39.923 \| good	0.344 \| good	2.084 \| good	0.197 \| good
2025-06-04T14:00:00.000Z	35 \| good	5.763 \| good	24.841 \| good	38.012 \| good	0.632 \| good	20.524 \| good	0.425 \| good
2025-06-04T15:00:00.000Z	34 \| good	4.771 \| good	20.869 \| good	37.052 \| good	0.777 \| good	11.964 \| good	0.392 \| good
2025-06-04T16:00:00.000Z	36 \| good	3.679 \| good	15.9 \| good	39.049 \| good	0.741 \| good	10.773 \| good	0.259 \| good
2025-06-04T17:00:00.000Z	52 \| moderate	10.277 \| good	45.398 \| good	36.46 \| good	0.323 \| good	1.809 \| good	0.193 \| good
2025-06-04T18:00:00.000Z	52 \| moderate	9.71 \| good	43.342 \| good	44.989 \| good	0.321 \| good	1.725 \| good	0.195 \| good
2025-06-04T19:00:00.000Z	44 \| good	8.032 \| good	35.693 \| good	37.088 \| good	0.84 \| good	4.959 \| good	0.419 \| good
2025-06-04T20:00:00.000Z	52 \| moderate	10.45 \| good	46.773 \| good	38.035 \| good	0.883 \| good	6.602 \| good	0.237 \| good
2025-06-04T21:00:00.000Z	52 \| moderate	10.162 \| good	44.838 \| good	36.052 \| good	0.817 \| good	6.148 \| good	0.234 \| good
2025-06-04T22:00:00.000Z	33 \| good	5.416 \| good	23.08 \| good	36.057 \| good	0.785 \| good	6.821 \| good	0.205 \| good
2025-06-04T23:00:00.000Z	32 \| good	3.413 \| good	15.056 \| good	35.074 \| good	0.705 \| good	4.456 \| good	0.234 \| good
2025-06-05T00:00:00.000Z	27 \| good	2.614 \| good	11.061 \| good	29.117 \| good	0.697 \| good	2.252 \| good	0.365 \| good
2025-06-05T01:00:00.000Z	26 \| good	2.114 \| good	9.06 \| good	28.153 \| good	0.7 \| good	6.515 \| good	0.379 \| good
2025-06-05T02:00:00.000Z	26 \| good	1.812 \| good	8.042 \| good	28.114 \| good	0.631 \| good	5.855 \| good	0.413 \| good
2025-06-05T03:00:00.000Z	31 \| good	1.714 \| good	7.064 \| good	33.063 \| good	0.663 \| good	4.618 \| good	0.376 \| good
2025-06-05T04:00:00.000Z	31 \| good	1.619 \| good	7.085 \| good	33.07 \| good	0.709 \| good	5.499 \| good	0.316 \| good
2025-06-05T05:00:00.000Z	33 \| good	2.216 \| good	9.076 \| good	36.033 \| good	0.698 \| good	5.812 \| good	0.331 \| good
2025-06-05T06:00:00.000Z	33 \| good	3.01 \| good	12.061 \| good	36.041 \| good	0.709 \| good	6.388 \| good	0.331 \| good
2025-06-05T07:00:00.000Z	33 \| good	4.602 \| good	20.012 \| good	36.041 \| good	0.699 \| good	6.584 \| good	0.331 \| good
2025-06-05T08:00:00.000Z	33 \| good	5.9 \| good	26.99 \| good	36.038 \| good	0.676 \| good	6.589 \| good	0.38 \| good
2025-06-05T09:00:00.000Z	34 \| good	5.713 \| good	25.058 \| good	37.031 \| good	0.68 \| good	3.058 \| good	0.466 \| good
2025-06-05T10:00:00.000Z	33 \| good	5.629 \| good	24.139 \| good	36.035 \| good	0.596 \| good	3.125 \| good	0.388 \| good
2025-06-05T11:00:00.000Z	32 \| good	5.444 \| good	23.209 \| good	35.043 \| good	0.65 \| good	2.574 \| good	0.323 \| good
2025-06-05T12:00:00.000Z	35 \| good	5.063 \| good	22.285 \| good	38.014 \| good	0.666 \| good	3.291 \| good	0.286 \| good
2025-06-05T13:00:00.000Z	35 \| good	5.68 \| good	24.372 \| good	38.037 \| good	0.679 \| good	5.126 \| good	0.286 \| good
2025-06-05T14:00:00.000Z	54 \| moderate	10.586 \| good	47.377 \| good	39.026 \| good	0.61 \| good	3.075 \| good	0.286 \| good
2025-06-05T15:00:00.000Z	62 \| moderate	14.663 \| fine	65.263 \| fine	39.016 \| good	0.587 \| good	2.489 \| good	0.356 \| good
2025-06-05T16:00:00.000Z	60 \| moderate	14.084 \| fine	63.36 \| fine	37.041 \| good	0.726 \| good	3.758 \| good	0.345 \| good
2025-06-05T17:00:00.000Z	62 \| moderate	15.009 \| fine	67.474 \| fine	40.039 \| good	0.717 \| good	3.794 \| good	0.408 \| good
2025-06-05T18:00:00.000Z	67 \| moderate	17.726 \| fine	79.568 \| fine	40.061 \| good	0.63 \| good	3.67 \| good	0.397 \| good
2025-06-05T19:00:00.000Z	71 \| moderate	20.034 \| fine	87.514 \| fine	43.076 \| good	0.691 \| good	4.008 \| good	0.333 \| good
2025-06-05T20:00:00.000Z	79 \| moderate	24.118 \| fine	105.3 \| fine	46.069 \| good	0.637 \| good	4.725 \| good	0.285 \| good
2025-06-05T21:00:00.000Z	84 \| moderate	26.891 \| fine	117.133 \| fine	52.046 \| good	0.623 \| good	3.555 \| good	0.274 \| good
2025-06-05T22:00:00.000Z	86 \| moderate	27.764 \| fine	121.051 \| fine	54.066 \| good	0.63 \| good	3.487 \| good	0.274 \| good
2025-06-05T23:00:00.000Z	82 \| moderate	26.362 \| fine	115.067 \| fine	55.041 \| fine	0.684 \| good	4.007 \| good	0.211 \| good
2025-06-06T00:00:00.000Z	81 \| moderate	24.752 \| fine	107.125 \| fine	56.025 \| fine	0.675 \| good	4.365 \| good	0.252 \| good
2025-06-06T01:00:00.000Z	77 \| moderate	23.125 \| fine	101.133 \| fine	55.024 \| fine	0.674 \| good	5.907 \| good	0.237 \| good
2025-06-06T02:00:00.000Z	84 \| moderate	27.339 \| fine	118.769 \| fine	53.988 \| good	0.649 \| good	7.907 \| good	0.263 \| good
2025-06-06T03:00:00.000Z	94 \| moderate	32.303 \| fine	140.617 \| fine	51.927 \| good	1.334 \| good	10.468 \| good	0.3 \| good
2025-06-06T04:00:00.000Z	84 \| moderate	27.211 \| fine	119.068 \| fine	51.898 \| good	1.35 \| good	3.66 \| good	0.303 \| good
2025-06-06T05:00:00.000Z	79 \| moderate	23.68 \| fine	103.351 \| fine	45.904 \| good	0.878 \| good	1.826 \| good	0.381 \| good
2025-06-06T06:00:00.000Z	75 \| moderate	22.419 \| fine	97.527 \| fine	36.978 \| good	0.589 \| good	4.03 \| good	0.398 \| good
2025-06-05T11:00:00.000Z	32 \| good	5.444 \| good	23.209 \| good	35.043 \| good	0.65 \| good	2.574 \| good	0.323 \| good
2025-06-05T12:00:00.000Z	90 \| moderate	29.803 \| fine	128.639 \| fine	17.856 \| good	0.509 \| good	4.782 \| good	0.197 \| good
2025-06-05T13:00:00.000Z	88 \| moderate	28.629 \| fine	124.276 \| fine	27.063 \| good	1.009 \| good	3.892 \| good	0.207 \| good
2025-06-05T14:00:00.000Z	86 \| moderate	27.629 \| fine	120.232 \| fine	26.349 \| good	0.956 \| good	3.812 \| good	0.207 \| good
2025-06-05T15:00:00.000Z	84 \| moderate	26.916 \| fine	117.061 \| fine	27.653 \| good	0.904 \| good	3.732 \| good	0.207 \| good
2025-06-05T16:00:00.000Z	79 \| moderate	23.938 \| fine	104.822 \| fine	38.496 \| good	0.648 \| good	0.976 \| good	0.189 \| good
2025-06-05T17:00:00.000Z	66 \| moderate	17.35 \| fine	77.148 \| fine	41.082 \| good	0.591 \| good	0.951 \| good	0.19 \| good
2025-06-05T18:00:00.000Z	60 \| moderate	13.574 \| fine	60.884 \| fine	44.32 \| good	0.535 \| good	0.925 \| good	0.19 \| good
2025-06-05T19:00:00.000Z	56 \| moderate	11.718 \| good	51.701 \| good	48.893 \| good	0.405 \| good	0.865 \| good	0.182 \| good
2025-06-05T20:00:00.000Z	56 \| moderate	12.093 \| good	53.924 \| good	55.612 \| fine	0.372 \| good	0.849 \| good	0.183 \| good
2025-06-05T21:00:00.000Z	71 \| moderate	11.49 \| good	50.715 \| good	61.176 \| fine	0.34 \| good	0.833 \| good	0.183 \| good
2025-06-05T22:00:00.000Z	58 \| moderate	9.198 \| good	41.081 \| good	57.296 \| fine	0.352 \| good	2.243 \| good	0.192 \| good
2025-06-05T23:00:00.000Z	54 \| moderate	11.261 \| good	49.882 \| good	52.945 \| good	0.322 \| good	2.233 \| good	0.192 \| good
2025-06-06T00:00:00.000Z	52 \| moderate	10.075 \| good	44.947 \| good	48.708 \| good	0.293 \| good	2.222 \| good	0.193 \| good
2025-06-06T01:00:00.000Z	56 \| moderate	11.679 \| good	51.938 \| good	41.937 \| good	0.432 \| good	10.419 \| good	0.249 \| good
2025-06-06T02:00:00.000Z	62 \| moderate	14.517 \| fine	64.965 \| fine	34.829 \| good	0.409 \| good	10.161 \| good	0.248 \| good
2025-06-06T03:00:00.000Z	62 \| moderate	15.198 \| fine	68.195 \| fine	31.519 \| good	0.385 \| good	9.904 \| good	0.247 \| good
2025-06-06T04:00:00.000Z	62 \| moderate	14.564 \| fine	65.347 \| fine	30.865 \| good	0.666 \| good	7.424 \| good	0.239 \| good
2025-06-06T05:00:00.000Z	67 \| moderate	17.953 \| fine	79.318 \| fine	32.205 \| good	0.688 \| good	7.152 \| good	0.239 \| good
2025-06-06T06:00:00.000Z	73 \| moderate	21.466 \| fine	93.907 \| fine	33.548 \| good	0.709 \| good	6.88 \| good	0.239 \| good
2025-06-06T07:00:00.000Z	79 \| moderate	23.539 \| fine	103.36 \| fine	27.92 \| good	0.996 \| good	6.247 \| good	0.247 \| good
2025-06-06T08:00:00.000Z	79 \| moderate	24.173 \| fine	105.935 \| fine	25.094 \| good	1.006 \| good	6.098 \| good	0.248 \| good
2025-06-06T09:00:00.000Z	81 \| moderate	25.45 \| fine	110.557 \| fine	25.772 \| good	1.015 \| good	5.949 \| good	0.249 \| good
2025-06-06T10:00:00.000Z	88 \| moderate	29.479 \| fine	128.086 \| fine	21.905 \| good	0.891 \| good	5.369 \| good	0.258 \| good
2025-06-06T11:00:00.000Z	94 \| moderate	32.188 \| fine	139.989 \| fine	12.974 \| good	0.88 \| good	5.261 \| good	0.258 \| good
2025-06-06T12:00:00.000Z	86 \| moderate	27.822 \| fine	120.366 \| fine	23.945 \| good	0.869 \| good	5.154 \| good	0.257 \| good
2025-06-06T13:00:00.000Z	73 \| moderate	21.037 \| fine	93.018 \| fine	36.958 \| good	0.727 \| good	2.055 \| good	0.239 \| good
2025-06-06T14:00:00.000Z	60 \| moderate	13.708 \| fine	61.94 \| fine	47.116 \| good	0.677 \| good	1.986 \| good	0.238 \| good
2025-06-06T15:00:00.000Z	60 \| moderate	13.562 \| fine	61.595 \| fine	54.506 \| good	0.628 \| good	1.918 \| good	0.237 \| good
2025-06-06T16:00:00.000Z	58 \| moderate	12.964 \| fine	57.978 \| fine	57.053 \| fine	0.447 \| good	0.773 \| good	0.194 \| good
2025-06-06T17:00:00.000Z	58 \| moderate	13.264 \| fine	59.766 \| fine	54.554 \| good	0.397 \| good	0.748 \| good	0.194 \| good
2025-06-06T18:00:00.000Z	60 \| moderate	13.89 \| fine	62.705 \| fine	49.214 \| good	0.346 \| good	0.723 \| good	0.193 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	14.627 \| fine	65.397 \| fine	45.581 \| good	0.364 \| good	0.714 \| good	0.177 \| good
2025-06-06T20:00:00.000Z	60 \| moderate	13.542 \| fine	61.14 \| fine	46.583 \| good	0.32 \| good	0.695 \| good	0.177 \| good
2025-06-06T21:00:00.000Z	58 \| moderate	12.797 \| fine	57.369 \| fine	44.122 \| good	0.277 \| good	0.676 \| good	0.177 \| good
2025-06-06T22:00:00.000Z	60 \| moderate	14.428 \| fine	65.05 \| fine	43.26 \| good	0.376 \| good	2.47 \| good	0.185 \| good
2025-06-06T23:00:00.000Z	64 \| moderate	16.331 \| fine	72.788 \| fine	44.31 \| good	0.333 \| good	2.508 \| good	0.185 \| good
2025-06-07T00:00:00.000Z	45 \| good	8.482 \| good	37.466 \| good	49.051 \| good	0.289 \| good	2.547 \| good	0.186 \| good
2025-06-07T01:00:00.000Z	58 \| moderate	12.624 \| fine	56.586 \| fine	44.351 \| good	0.546 \| good	12.622 \| good	0.258 \| good
2025-06-07T02:00:00.000Z	58 \| moderate	13.402 \| fine	60.754 \| fine	33.773 \| good	0.522 \| good	12.061 \| good	0.256 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	11.776 \| good	52.233 \| good	22.53 \| good	0.498 \| good	11.501 \| good	0.253 \| good
2025-06-07T04:00:00.000Z	52 \| moderate	10.078 \| good	44.768 \| good	24.822 \| good	0.844 \| good	8.143 \| good	0.234 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	10.074 \| good	44.69 \| good	28.327 \| good	0.876 \| good	7.422 \| good	0.229 \| good
2025-06-07T06:00:00.000Z	56 \| moderate	11.894 \| good	12.156 \| good	34.481 \| good	0.915 \| good	6.529 \| good	0.223 \| good
2025-06-07T07:00:00.000Z	49 \| good	9.044 \| good	39.586 \| good	32.025 \| good	1.013 \| good	5.039 \| good	0.203 \| good
2025-06-07T08:00:00.000Z	44 \| good	8.112 \| good	35.614 \| good	24.55 \| good	1.003 \| good	4.951 \| good	0.202 \| good
2025-06-07T09:00:00.000Z	44 \| good	8.146 \| good	35.939 \| good	21.116 \| good	0.993 \| good	4.863 \| good	0.2 \| good
2025-06-07T10:00:00.000Z	49 \| good	8.863 \| good	38.942 \| good	19.55 \| good	0.838 \| good	4.265 \| good	0.197 \| good
2025-06-07T11:00:00.000Z	52 \| moderate	9.517 \| good	42.459 \| good	16.834 \| good	0.822 \| good	4.255 \| good	0.196 \| good

Decatur

Get reliable air quality data to drive your business

Decatur, Illinois air quality map: Stay updated on AQI near you

0.40ppm

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 Decatur, Illinois?

The air quality information for Decatur, Illinois is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Decatur, Illinois at its worst?

In the past 24 hours, the air quality in Decatur, Illinois was at its worst at 11:00:00 on 2025-06-04.

When did Decatur, Illinois experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Decatur, Illinois was observed at 02:00:00 on 2025-06-05.

What is the AQI in Decatur, Illinois right now?

As of now, the AQI in Decatur, Illinois is 32, indicating Good conditions.

What is the most common type of pollution in Decatur, Illinois?

Decatur, Illinois air has the highest levels of O3.

What should I do in case of poor air quality in Decatur, Illinois?

Poor air quality in Decatur, Illinois means it's advisable to stay indoors and wear a mask for your protection.

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

PM_2.5 levels in Decatur, Illinois are currently 5.444 μg/m³.

What is the PM₁₀ level in Decatur, Illinois at the moment?

The PM₁₀ concentration in Decatur, Illinois is 23.209 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Decatur, Illinois at the moment?

The current carbon monoxide (CO) concentration in Decatur, Illinois is 0.323 ppm.

What is the sulfur dioxide (SO₂) level in Decatur, Illinois at the moment?

Currently, Decatur, Illinois has a sulfur dioxide (SO₂) concentration of 0.65 ppb.

What is the ozone (O₃) level in Decatur, Illinois at the moment?

The current ozone (O₃) level in Decatur, Illinois at the moment is 35.043 ppm.

What is the nitrogen dioxide (NO₂) level in Decatur, Illinois at the moment?

Nitrogen dioxide (NO₂) level in Decatur, Illinois at the moment is 2.574 ppb.

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