What is the current concentration of PM10 in O'fallon, Illinois?

The current PM10 concentration at O'fallon, Illinois is 59.684 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in O'fallon, Illinois?

The current sulfur dioxide (SO2) concentration at O'fallon, Illinois is 1.071 ppb.

What is the current concentration of ozone (O3) in O'fallon, Illinois?

The current ozone (O3) concentration at O'fallon, Illinois is 33.74 ppm.

What is the current concentration of nitrogen dioxide (NO2) in O'fallon, Illinois?

The current nitrogen dioxide (NO2) concentration at O'fallon, Illinois is 4.274 ppb.

O'Fallon, Illinois live air quality index now

Q: What is the current concentration of PM2.5 in O'fallon, Illinois?

The current PM2.5 concentration at O'fallon, Illinois is 7.369 μg/m3.

Stay updated with real-time air quality in O'Fallon, 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)

Moderate

O'Fallon, Illinois

Last updated: ... (Local time)

Major air pollutants in O'Fallon, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.37 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

59.68 μg/m³

155

255

425

605+

Ozone (O₃)

33.74 ppb

201

201+

Sulfur Dioxide (SO₂)

1.07 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.27 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

O'Fallon, Illinois

Get Live Pollen Counts

O'Fallon, Illinois

Scroll To Air Quality Map

Track live O'Fallon, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-14T20:00:00.000Z	56 \| moderate	12.08 \| good	66.113 \| fine	37.93 \| good	0.653 \| good	5.481 \| good	0.257 \| good
2026-08-14T21:00:00.000Z	56 \| moderate	11.802 \| good	56.199 \| fine	39.55 \| good	1.114 \| good	5.103 \| good	0.254 \| good
2026-08-14T22:00:00.000Z	58 \| moderate	12.55 \| fine	61.341 \| fine	45.231 \| good	0.733 \| good	4.706 \| good	0.254 \| good
2026-08-14T23:00:00.000Z	56 \| moderate	12.198 \| fine	51.424 \| good	41.117 \| good	0.895 \| good	5.064 \| good	0.297 \| good
2026-08-15T00:00:00.000Z	56 \| moderate	12.059 \| good	53.539 \| good	43.03 \| good	0.722 \| good	4.282 \| good	0.29 \| good
2026-08-15T01:00:00.000Z	56 \| moderate	11.974 \| good	40.946 \| good	41.534 \| good	0.878 \| good	4.18 \| good	0.343 \| good
2026-08-15T02:00:00.000Z	58 \| moderate	13.245 \| fine	40.014 \| good	35.601 \| good	0.795 \| good	4.889 \| good	0.363 \| good
2026-08-15T03:00:00.000Z	52 \| moderate	9.796 \| good	39.432 \| good	30.614 \| good	1.981 \| good	6.404 \| good	0.329 \| good
2026-08-15T04:00:00.000Z	52 \| moderate	9.739 \| good	43.279 \| good	25.578 \| good	0.859 \| good	7.666 \| good	0.378 \| good
2026-08-15T05:00:00.000Z	56 \| moderate	11.742 \| good	49.247 \| good	28.666 \| good	0.535 \| good	8.275 \| good	0.313 \| good
2026-08-15T06:00:00.000Z	54 \| moderate	11.021 \| good	42.309 \| good	21.582 \| good	0.622 \| good	5.253 \| good	0.384 \| good
2026-08-15T07:00:00.000Z	54 \| moderate	11.076 \| good	29.211 \| good	23.873 \| good	0.617 \| good	6.309 \| good	0.382 \| good
2026-08-15T08:00:00.000Z	54 \| moderate	11.263 \| good	34.707 \| good	24.743 \| good	0.614 \| good	7.409 \| good	0.369 \| good
2026-08-15T09:00:00.000Z	56 \| moderate	12.015 \| good	46.472 \| good	25.91 \| good	2.197 \| good	5.476 \| good	0.217 \| good
2026-08-15T10:00:00.000Z	58 \| moderate	13.053 \| fine	40.208 \| good	23.854 \| good	2.114 \| good	5.279 \| good	0.206 \| good
2026-08-15T11:00:00.000Z	58 \| moderate	12.967 \| fine	57.301 \| fine	20.849 \| good	0.65 \| good	5.341 \| good	0.218 \| good
2026-08-15T12:00:00.000Z	60 \| moderate	14.453 \| fine	51.21 \| good	22.717 \| good	0.947 \| good	4.865 \| good	0.213 \| good
2026-08-15T13:00:00.000Z	60 \| moderate	13.977 \| fine	57.998 \| fine	22.563 \| good	0.598 \| good	4.42 \| good	0.184 \| good
2026-08-15T14:00:00.000Z	38 \| good	7.26 \| good	29.084 \| good	26.737 \| good	0.631 \| good	3.952 \| good	0.186 \| good
2026-08-15T15:00:00.000Z	34 \| good	4.269 \| good	37.176 \| good	32.712 \| good	0.922 \| good	5.099 \| good	0.182 \| good
2026-08-15T16:00:00.000Z	31 \| good	3.985 \| good	25.702 \| good	34.307 \| good	0.516 \| good	5.787 \| good	0.257 \| good
2026-08-15T17:00:00.000Z	36 \| good	3.947 \| good	38.585 \| good	34.637 \| good	0.386 \| good	4.531 \| good	0.245 \| good
2026-08-15T18:00:00.000Z	54 \| moderate	4.845 \| good	62.361 \| fine	37.696 \| good	0.779 \| good	4.573 \| good	0.251 \| good
2026-08-15T19:00:00.000Z	40 \| good	4.935 \| good	42.588 \| good	42.259 \| good	1.554 \| good	4.626 \| good	0.246 \| good
2026-08-15T20:00:00.000Z	44 \| good	6.531 \| good	47.665 \| good	41.616 \| good	1.214 \| good	5.107 \| good	0.246 \| good
2026-08-15T21:00:00.000Z	64 \| moderate	7.737 \| good	80.916 \| fine	42.743 \| good	0.662 \| good	4.719 \| good	0.29 \| good
2026-08-15T22:00:00.000Z	55 \| moderate	9.908 \| good	63.275 \| fine	40.69 \| good	0.88 \| good	4.993 \| good	0.32 \| good
2026-08-15T23:00:00.000Z	52 \| moderate	9.719 \| good	35.08 \| good	39.636 \| good	0.565 \| good	4.439 \| good	0.248 \| good
2026-08-16T00:00:00.000Z	54 \| moderate	10.852 \| good	45.715 \| good	38.786 \| good	0.513 \| good	4.165 \| good	0.211 \| good
2026-08-16T01:00:00.000Z	58 \| moderate	13.018 \| fine	56.293 \| fine	36.712 \| good	0.512 \| good	5.5 \| good	0.246 \| good
2026-08-16T02:00:00.000Z	60 \| moderate	13.777 \| fine	65.658 \| fine	35.152 \| good	0.442 \| good	6.582 \| good	0.25 \| good
2026-08-16T03:00:00.000Z	52 \| moderate	9.824 \| good	36.725 \| good	27.044 \| good	0.461 \| good	6.361 \| good	0.28 \| good
2026-08-16T04:00:00.000Z	56 \| moderate	9.189 \| good	65.189 \| fine	21.833 \| good	0.459 \| good	4.858 \| good	0.224 \| good
2026-08-16T05:00:00.000Z	56 \| moderate	12.376 \| fine	54.765 \| good	15.267 \| good	0.499 \| good	5.413 \| good	0.241 \| good
2026-08-16T06:00:00.000Z	56 \| moderate	12.013 \| good	42.708 \| good	14.88 \| good	0.394 \| good	7.555 \| good	0.255 \| good
2026-08-16T07:00:00.000Z	58 \| moderate	13.304 \| fine	58.26 \| fine	14.3 \| good	0.456 \| good	7.032 \| good	0.255 \| good
2026-08-16T08:00:00.000Z	62 \| moderate	15.295 \| fine	68.895 \| fine	11.382 \| good	0.457 \| good	7.302 \| good	0.255 \| good
2026-08-16T09:00:00.000Z	66 \| moderate	16.969 \| fine	65.812 \| fine	12.614 \| good	1.56 \| good	5.346 \| good	0.206 \| good
2026-08-16T10:00:00.000Z	66 \| moderate	16.783 \| fine	50.555 \| good	11.78 \| good	2.135 \| good	6.846 \| good	0.206 \| good
2026-08-16T11:00:00.000Z	62 \| moderate	15.48 \| fine	50.83 \| good	9.24 \| good	0.444 \| good	4.043 \| good	0.2 \| good
2026-08-16T12:00:00.000Z	60 \| moderate	13.607 \| fine	61.686 \| fine	16.206 \| good	0.481 \| good	3.532 \| good	0.206 \| good
2026-08-16T13:00:00.000Z	62 \| moderate	14.879 \| fine	58.622 \| fine	18.462 \| good	0.485 \| good	3.337 \| good	0.2 \| good
2026-08-16T14:00:00.000Z	60 \| moderate	13.589 \| fine	49.524 \| good	19.063 \| good	0.466 \| good	3.927 \| good	0.204 \| good
2026-08-16T15:00:00.000Z	56 \| moderate	11.754 \| good	25.823 \| good	23.076 \| good	0.407 \| good	3.196 \| good	0.204 \| good
2026-08-16T16:00:00.000Z	52 \| moderate	10.332 \| good	41.917 \| good	28.332 \| good	0.433 \| good	3.567 \| good	0.2 \| good
2026-08-16T17:00:00.000Z	44 \| good	8.003 \| good	36.221 \| good	33.23 \| good	0.994 \| good	5.812 \| good	0.245 \| good
2026-08-16T18:00:00.000Z	53 \| moderate	7.369 \| good	59.684 \| fine	33.74 \| good	1.071 \| good	4.274 \| good	0.215 \| good
2026-08-16T19:00:00.000Z	53 \| moderate	7.369 \| good	59.684 \| fine	33.74 \| good	1.071 \| good	4.274 \| good	0.215 \| good
2026-08-15T23:00:00.000Z	58 \| moderate	12.909 \| fine	58.667 \| fine	36.925 \| good	1.153 \| good	1.84 \| good	0.162 \| good
2026-08-16T00:00:00.000Z	52 \| moderate	9.933 \| good	44.033 \| good	30.917 \| good	1.114 \| good	4.08 \| good	0.186 \| good
2026-08-16T01:00:00.000Z	62 \| moderate	14.527 \| fine	65.263 \| fine	29.81 \| good	1.191 \| good	7.576 \| good	0.21 \| good
2026-08-16T02:00:00.000Z	60 \| moderate	14.332 \| fine	63.563 \| fine	32.03 \| good	1.283 \| good	11.644 \| good	0.235 \| good
2026-08-16T03:00:00.000Z	62 \| moderate	14.911 \| fine	66.879 \| fine	32.96 \| good	1.363 \| good	15.092 \| good	0.257 \| good
2026-08-16T04:00:00.000Z	60 \| moderate	14.01 \| fine	63.121 \| fine	29.742 \| good	1.43 \| good	18.128 \| good	0.275 \| good
2026-08-16T05:00:00.000Z	58 \| moderate	13.374 \| fine	59.801 \| fine	21.987 \| good	1.448 \| good	20.654 \| good	0.293 \| good
2026-08-16T06:00:00.000Z	60 \| moderate	13.924 \| fine	63.014 \| fine	16.855 \| good	1.356 \| good	21.206 \| good	0.302 \| good
2026-08-16T07:00:00.000Z	58 \| moderate	13.14 \| fine	59.37 \| fine	13.804 \| good	1.207 \| good	17.538 \| good	0.283 \| good
2026-08-16T08:00:00.000Z	58 \| moderate	13.04 \| fine	58.8 \| fine	13.611 \| good	1.106 \| good	14.178 \| good	0.262 \| good
2026-08-16T09:00:00.000Z	60 \| moderate	13.663 \| fine	61.415 \| fine	15.111 \| good	1.031 \| good	12.492 \| good	0.249 \| good
2026-08-16T10:00:00.000Z	56 \| moderate	12.016 \| good	53.973 \| good	14.848 \| good	0.96 \| good	11.201 \| good	0.238 \| good
2026-08-16T11:00:00.000Z	54 \| moderate	10.648 \| good	47.143 \| good	18.517 \| good	0.895 \| good	10.062 \| good	0.226 \| good
2026-08-16T12:00:00.000Z	52 \| moderate	10.45 \| good	46.276 \| good	17.241 \| good	0.822 \| good	7.972 \| good	0.219 \| good
2026-08-16T13:00:00.000Z	56 \| moderate	12.476 \| fine	56.371 \| fine	17.619 \| good	0.762 \| good	5.414 \| good	0.221 \| good
2026-08-16T14:00:00.000Z	56 \| moderate	11.828 \| good	52.774 \| good	26.237 \| good	0.812 \| good	3.124 \| good	0.213 \| good
2026-08-16T15:00:00.000Z	54 \| moderate	11.348 \| good	50.181 \| good	31.906 \| good	0.926 \| good	2.062 \| good	0.203 \| good
2026-08-16T16:00:00.000Z	56 \| moderate	11.681 \| good	51.748 \| good	44.394 \| good	1.044 \| good	1.624 \| good	0.189 \| good
2026-08-16T17:00:00.000Z	56 \| moderate	12.187 \| fine	54.834 \| good	50.358 \| good	1.163 \| good	1.319 \| good	0.174 \| good
2026-08-16T18:00:00.000Z	54 \| moderate	11.004 \| good	48.624 \| good	49.901 \| good	1.275 \| good	1.092 \| good	0.162 \| good
2026-08-16T19:00:00.000Z	54 \| moderate	10.673 \| good	47.437 \| good	51.289 \| good	1.151 \| good	0.921 \| good	0.152 \| good
2026-08-16T20:00:00.000Z	52 \| moderate	9.562 \| good	42.554 \| good	48.859 \| good	1.106 \| good	0.848 \| good	0.148 \| good
2026-08-16T21:00:00.000Z	49 \| good	9.302 \| good	41.472 \| good	45.251 \| good	1.091 \| good	0.86 \| good	0.146 \| good
2026-08-16T22:00:00.000Z	36 \| good	6.285 \| good	27.878 \| good	39.147 \| good	1.028 \| good	1.118 \| good	0.146 \| good
2026-08-16T23:00:00.000Z	38 \| good	6.721 \| good	29.919 \| good	32.447 \| good	1.022 \| good	1.771 \| good	0.155 \| good
2026-08-17T00:00:00.000Z	24 \| good	4.406 \| good	19.079 \| good	25.539 \| good	0.926 \| good	2.322 \| good	0.161 \| good
2026-08-17T01:00:00.000Z	28 \| good	4.53 \| good	19.905 \| good	29.535 \| good	0.81 \| good	2.888 \| good	0.163 \| good
2026-08-17T02:00:00.000Z	27 \| good	4.943 \| good	21.013 \| good	26.982 \| good	0.694 \| good	3.379 \| good	0.164 \| good
2026-08-17T03:00:00.000Z	33 \| good	6.346 \| good	27.963 \| good	22.5 \| good	0.598 \| good	3.675 \| good	0.163 \| good
2026-08-17T04:00:00.000Z	38 \| good	7.295 \| good	32.061 \| good	22.296 \| good	0.53 \| good	4.188 \| good	0.163 \| good
2026-08-17T05:00:00.000Z	52 \| moderate	10.251 \| good	45.244 \| good	20.695 \| good	0.48 \| good	4.781 \| good	0.164 \| good
2026-08-17T06:00:00.000Z	56 \| moderate	12.116 \| fine	54.751 \| good	18.325 \| good	0.445 \| good	4.981 \| good	0.163 \| good
2026-08-17T07:00:00.000Z	52 \| moderate	10.346 \| good	45.809 \| good	16.584 \| good	0.433 \| good	5.377 \| good	0.164 \| good
2026-08-17T08:00:00.000Z	52 \| moderate	10.061 \| good	44.977 \| good	16.062 \| good	0.434 \| good	5.878 \| good	0.167 \| good
2026-08-17T09:00:00.000Z	52 \| moderate	10.462 \| good	46.075 \| good	14.56 \| good	0.45 \| good	6.175 \| good	0.17 \| good
2026-08-17T10:00:00.000Z	52 \| moderate	9.741 \| good	43.077 \| good	9.952 \| good	0.48 \| good	6.227 \| good	0.174 \| good
2026-08-17T11:00:00.000Z	52 \| moderate	10.275 \| good	45.743 \| good	12.518 \| good	0.512 \| good	6.175 \| good	0.181 \| good
2026-08-17T12:00:00.000Z	54 \| moderate	10.987 \| good	48.743 \| good	15.509 \| good	0.525 \| good	5.466 \| good	0.189 \| good
2026-08-17T13:00:00.000Z	49 \| good	9.429 \| good	41.914 \| good	20.213 \| good	0.596 \| good	3.834 \| good	0.197 \| good
2026-08-17T14:00:00.000Z	49 \| good	9.451 \| good	42.077 \| good	24.85 \| good	0.69 \| good	2.742 \| good	0.204 \| good
2026-08-17T15:00:00.000Z	44 \| good	8.419 \| good	36.977 \| good	31.471 \| good	0.841 \| good	1.798 \| good	0.205 \| good
2026-08-17T16:00:00.000Z	44 \| good	8.03 \| good	35.068 \| good	33.591 \| good	0.946 \| good	1.323 \| good	0.203 \| good
2026-08-17T17:00:00.000Z	49 \| good	8.887 \| good	38.977 \| good	35.073 \| good	0.887 \| good	0.997 \| good	0.199 \| good
2026-08-17T18:00:00.000Z	49 \| good	8.567 \| good	37.098 \| good	38.714 \| good	0.84 \| good	0.842 \| good	0.197 \| good
2026-08-17T19:00:00.000Z	44 \| good	7.792 \| good	34.035 \| good	42.169 \| good	0.817 \| good	0.786 \| good	0.198 \| good
2026-08-17T20:00:00.000Z	44 \| good	7.815 \| good	34.191 \| good	42.47 \| good	0.778 \| good	0.788 \| good	0.197 \| good
2026-08-17T21:00:00.000Z	49 \| good	8.615 \| good	37.284 \| good	37.763 \| good	0.744 \| good	0.828 \| good	0.197 \| good
2026-08-17T22:00:00.000Z	52 \| moderate	9.872 \| good	43.881 \| good	37.831 \| good	0.715 \| good	0.943 \| good	0.197 \| good

O'Fallon

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O'Fallon, Illinois air quality map: Track AQI near you

0.21ppm

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 O'fallon, Illinois updated?

The air quality for O'fallon, Illinois is updated every hour.

When was the worst air quality at O'fallon, Illinois in the last 24 hrs?

The worst air quality in O'fallon, Illinois in the last 24 hours was observed at 10:00:00 on 2026-08-16.

When was the best air quality at O'fallon, Illinois in the last 24 hrs?

In the last 24 hrs, the best air quality in O'fallon, Illinois was observed at 07:00:00 on 2026-08-15.

What is the current air quality in O'fallon, Illinois?

The current air quality in O'fallon, Illinois is 53, categorized as Moderate based on real-time data.

What pollutant is the most common in O'fallon, Illinois?

The most common pollutant in O'fallon, Illinois is PM10.

What should I do if the air quality in O'fallon, Illinois is poor?

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

What is the current concentration of PM_2.5 in O'fallon, Illinois?

The current PM_2.5 concentration at O'fallon, Illinois is 7.369 μg/m³.

What is the current concentration of PM₁₀ in O'fallon, Illinois?

The current PM₁₀ concentration at O'fallon, Illinois is 59.684 μg/m³.

What is the current concentration of carbon monoxide (CO) in O'fallon, Illinois?

The current carbon monoxide (CO) concentration at O'fallon, Illinois is 0.215 ppm.

What is the current concentration of sulfur dioxide (SO₂) in O'fallon, Illinois?

The current sulfur dioxide (SO₂) concentration at O'fallon, Illinois is 1.071 ppb.

What is the current concentration of ozone (O₃) in O'fallon, Illinois?

The current ozone (O₃) concentration at O'fallon, Illinois is 33.74 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in O'fallon, Illinois?

The current nitrogen dioxide (NO₂) concentration at O'fallon, Illinois is 4.274 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-14T20:00:00.000Z	56 \| moderate	12.08 \| good	66.113 \| fine	37.93 \| good	0.653 \| good	5.481 \| good	0.257 \| good
2026-08-14T21:00:00.000Z	56 \| moderate	11.802 \| good	56.199 \| fine	39.55 \| good	1.114 \| good	5.103 \| good	0.254 \| good
2026-08-14T22:00:00.000Z	58 \| moderate	12.55 \| fine	61.341 \| fine	45.231 \| good	0.733 \| good	4.706 \| good	0.254 \| good
2026-08-14T23:00:00.000Z	56 \| moderate	12.198 \| fine	51.424 \| good	41.117 \| good	0.895 \| good	5.064 \| good	0.297 \| good
2026-08-15T00:00:00.000Z	56 \| moderate	12.059 \| good	53.539 \| good	43.03 \| good	0.722 \| good	4.282 \| good	0.29 \| good
2026-08-15T01:00:00.000Z	56 \| moderate	11.974 \| good	40.946 \| good	41.534 \| good	0.878 \| good	4.18 \| good	0.343 \| good
2026-08-15T02:00:00.000Z	58 \| moderate	13.245 \| fine	40.014 \| good	35.601 \| good	0.795 \| good	4.889 \| good	0.363 \| good
2026-08-15T03:00:00.000Z	52 \| moderate	9.796 \| good	39.432 \| good	30.614 \| good	1.981 \| good	6.404 \| good	0.329 \| good
2026-08-15T04:00:00.000Z	52 \| moderate	9.739 \| good	43.279 \| good	25.578 \| good	0.859 \| good	7.666 \| good	0.378 \| good
2026-08-15T05:00:00.000Z	56 \| moderate	11.742 \| good	49.247 \| good	28.666 \| good	0.535 \| good	8.275 \| good	0.313 \| good
2026-08-15T06:00:00.000Z	54 \| moderate	11.021 \| good	42.309 \| good	21.582 \| good	0.622 \| good	5.253 \| good	0.384 \| good
2026-08-15T07:00:00.000Z	54 \| moderate	11.076 \| good	29.211 \| good	23.873 \| good	0.617 \| good	6.309 \| good	0.382 \| good
2026-08-15T08:00:00.000Z	54 \| moderate	11.263 \| good	34.707 \| good	24.743 \| good	0.614 \| good	7.409 \| good	0.369 \| good
2026-08-15T09:00:00.000Z	56 \| moderate	12.015 \| good	46.472 \| good	25.91 \| good	2.197 \| good	5.476 \| good	0.217 \| good
2026-08-15T10:00:00.000Z	58 \| moderate	13.053 \| fine	40.208 \| good	23.854 \| good	2.114 \| good	5.279 \| good	0.206 \| good
2026-08-15T11:00:00.000Z	58 \| moderate	12.967 \| fine	57.301 \| fine	20.849 \| good	0.65 \| good	5.341 \| good	0.218 \| good
2026-08-15T12:00:00.000Z	60 \| moderate	14.453 \| fine	51.21 \| good	22.717 \| good	0.947 \| good	4.865 \| good	0.213 \| good
2026-08-15T13:00:00.000Z	60 \| moderate	13.977 \| fine	57.998 \| fine	22.563 \| good	0.598 \| good	4.42 \| good	0.184 \| good
2026-08-15T14:00:00.000Z	38 \| good	7.26 \| good	29.084 \| good	26.737 \| good	0.631 \| good	3.952 \| good	0.186 \| good
2026-08-15T15:00:00.000Z	34 \| good	4.269 \| good	37.176 \| good	32.712 \| good	0.922 \| good	5.099 \| good	0.182 \| good
2026-08-15T16:00:00.000Z	31 \| good	3.985 \| good	25.702 \| good	34.307 \| good	0.516 \| good	5.787 \| good	0.257 \| good
2026-08-15T17:00:00.000Z	36 \| good	3.947 \| good	38.585 \| good	34.637 \| good	0.386 \| good	4.531 \| good	0.245 \| good
2026-08-15T18:00:00.000Z	54 \| moderate	4.845 \| good	62.361 \| fine	37.696 \| good	0.779 \| good	4.573 \| good	0.251 \| good
2026-08-15T19:00:00.000Z	40 \| good	4.935 \| good	42.588 \| good	42.259 \| good	1.554 \| good	4.626 \| good	0.246 \| good
2026-08-15T20:00:00.000Z	44 \| good	6.531 \| good	47.665 \| good	41.616 \| good	1.214 \| good	5.107 \| good	0.246 \| good
2026-08-15T21:00:00.000Z	64 \| moderate	7.737 \| good	80.916 \| fine	42.743 \| good	0.662 \| good	4.719 \| good	0.29 \| good
2026-08-15T22:00:00.000Z	55 \| moderate	9.908 \| good	63.275 \| fine	40.69 \| good	0.88 \| good	4.993 \| good	0.32 \| good
2026-08-15T23:00:00.000Z	52 \| moderate	9.719 \| good	35.08 \| good	39.636 \| good	0.565 \| good	4.439 \| good	0.248 \| good
2026-08-16T00:00:00.000Z	54 \| moderate	10.852 \| good	45.715 \| good	38.786 \| good	0.513 \| good	4.165 \| good	0.211 \| good
2026-08-16T01:00:00.000Z	58 \| moderate	13.018 \| fine	56.293 \| fine	36.712 \| good	0.512 \| good	5.5 \| good	0.246 \| good
2026-08-16T02:00:00.000Z	60 \| moderate	13.777 \| fine	65.658 \| fine	35.152 \| good	0.442 \| good	6.582 \| good	0.25 \| good
2026-08-16T03:00:00.000Z	52 \| moderate	9.824 \| good	36.725 \| good	27.044 \| good	0.461 \| good	6.361 \| good	0.28 \| good
2026-08-16T04:00:00.000Z	56 \| moderate	9.189 \| good	65.189 \| fine	21.833 \| good	0.459 \| good	4.858 \| good	0.224 \| good
2026-08-16T05:00:00.000Z	56 \| moderate	12.376 \| fine	54.765 \| good	15.267 \| good	0.499 \| good	5.413 \| good	0.241 \| good
2026-08-16T06:00:00.000Z	56 \| moderate	12.013 \| good	42.708 \| good	14.88 \| good	0.394 \| good	7.555 \| good	0.255 \| good
2026-08-16T07:00:00.000Z	58 \| moderate	13.304 \| fine	58.26 \| fine	14.3 \| good	0.456 \| good	7.032 \| good	0.255 \| good
2026-08-16T08:00:00.000Z	62 \| moderate	15.295 \| fine	68.895 \| fine	11.382 \| good	0.457 \| good	7.302 \| good	0.255 \| good
2026-08-16T09:00:00.000Z	66 \| moderate	16.969 \| fine	65.812 \| fine	12.614 \| good	1.56 \| good	5.346 \| good	0.206 \| good
2026-08-16T10:00:00.000Z	66 \| moderate	16.783 \| fine	50.555 \| good	11.78 \| good	2.135 \| good	6.846 \| good	0.206 \| good
2026-08-16T11:00:00.000Z	62 \| moderate	15.48 \| fine	50.83 \| good	9.24 \| good	0.444 \| good	4.043 \| good	0.2 \| good
2026-08-16T12:00:00.000Z	60 \| moderate	13.607 \| fine	61.686 \| fine	16.206 \| good	0.481 \| good	3.532 \| good	0.206 \| good
2026-08-16T13:00:00.000Z	62 \| moderate	14.879 \| fine	58.622 \| fine	18.462 \| good	0.485 \| good	3.337 \| good	0.2 \| good
2026-08-16T14:00:00.000Z	60 \| moderate	13.589 \| fine	49.524 \| good	19.063 \| good	0.466 \| good	3.927 \| good	0.204 \| good
2026-08-16T15:00:00.000Z	56 \| moderate	11.754 \| good	25.823 \| good	23.076 \| good	0.407 \| good	3.196 \| good	0.204 \| good
2026-08-16T16:00:00.000Z	52 \| moderate	10.332 \| good	41.917 \| good	28.332 \| good	0.433 \| good	3.567 \| good	0.2 \| good
2026-08-16T17:00:00.000Z	44 \| good	8.003 \| good	36.221 \| good	33.23 \| good	0.994 \| good	5.812 \| good	0.245 \| good
2026-08-16T18:00:00.000Z	53 \| moderate	7.369 \| good	59.684 \| fine	33.74 \| good	1.071 \| good	4.274 \| good	0.215 \| good
2026-08-16T19:00:00.000Z	53 \| moderate	7.369 \| good	59.684 \| fine	33.74 \| good	1.071 \| good	4.274 \| good	0.215 \| good
2026-08-15T23:00:00.000Z	58 \| moderate	12.909 \| fine	58.667 \| fine	36.925 \| good	1.153 \| good	1.84 \| good	0.162 \| good
2026-08-16T00:00:00.000Z	52 \| moderate	9.933 \| good	44.033 \| good	30.917 \| good	1.114 \| good	4.08 \| good	0.186 \| good
2026-08-16T01:00:00.000Z	62 \| moderate	14.527 \| fine	65.263 \| fine	29.81 \| good	1.191 \| good	7.576 \| good	0.21 \| good
2026-08-16T02:00:00.000Z	60 \| moderate	14.332 \| fine	63.563 \| fine	32.03 \| good	1.283 \| good	11.644 \| good	0.235 \| good
2026-08-16T03:00:00.000Z	62 \| moderate	14.911 \| fine	66.879 \| fine	32.96 \| good	1.363 \| good	15.092 \| good	0.257 \| good
2026-08-16T04:00:00.000Z	60 \| moderate	14.01 \| fine	63.121 \| fine	29.742 \| good	1.43 \| good	18.128 \| good	0.275 \| good
2026-08-16T05:00:00.000Z	58 \| moderate	13.374 \| fine	59.801 \| fine	21.987 \| good	1.448 \| good	20.654 \| good	0.293 \| good
2026-08-16T06:00:00.000Z	60 \| moderate	13.924 \| fine	63.014 \| fine	16.855 \| good	1.356 \| good	21.206 \| good	0.302 \| good
2026-08-16T07:00:00.000Z	58 \| moderate	13.14 \| fine	59.37 \| fine	13.804 \| good	1.207 \| good	17.538 \| good	0.283 \| good
2026-08-16T08:00:00.000Z	58 \| moderate	13.04 \| fine	58.8 \| fine	13.611 \| good	1.106 \| good	14.178 \| good	0.262 \| good
2026-08-16T09:00:00.000Z	60 \| moderate	13.663 \| fine	61.415 \| fine	15.111 \| good	1.031 \| good	12.492 \| good	0.249 \| good
2026-08-16T10:00:00.000Z	56 \| moderate	12.016 \| good	53.973 \| good	14.848 \| good	0.96 \| good	11.201 \| good	0.238 \| good
2026-08-16T11:00:00.000Z	54 \| moderate	10.648 \| good	47.143 \| good	18.517 \| good	0.895 \| good	10.062 \| good	0.226 \| good
2026-08-16T12:00:00.000Z	52 \| moderate	10.45 \| good	46.276 \| good	17.241 \| good	0.822 \| good	7.972 \| good	0.219 \| good
2026-08-16T13:00:00.000Z	56 \| moderate	12.476 \| fine	56.371 \| fine	17.619 \| good	0.762 \| good	5.414 \| good	0.221 \| good
2026-08-16T14:00:00.000Z	56 \| moderate	11.828 \| good	52.774 \| good	26.237 \| good	0.812 \| good	3.124 \| good	0.213 \| good
2026-08-16T15:00:00.000Z	54 \| moderate	11.348 \| good	50.181 \| good	31.906 \| good	0.926 \| good	2.062 \| good	0.203 \| good
2026-08-16T16:00:00.000Z	56 \| moderate	11.681 \| good	51.748 \| good	44.394 \| good	1.044 \| good	1.624 \| good	0.189 \| good
2026-08-16T17:00:00.000Z	56 \| moderate	12.187 \| fine	54.834 \| good	50.358 \| good	1.163 \| good	1.319 \| good	0.174 \| good
2026-08-16T18:00:00.000Z	54 \| moderate	11.004 \| good	48.624 \| good	49.901 \| good	1.275 \| good	1.092 \| good	0.162 \| good
2026-08-16T19:00:00.000Z	54 \| moderate	10.673 \| good	47.437 \| good	51.289 \| good	1.151 \| good	0.921 \| good	0.152 \| good
2026-08-16T20:00:00.000Z	52 \| moderate	9.562 \| good	42.554 \| good	48.859 \| good	1.106 \| good	0.848 \| good	0.148 \| good
2026-08-16T21:00:00.000Z	49 \| good	9.302 \| good	41.472 \| good	45.251 \| good	1.091 \| good	0.86 \| good	0.146 \| good
2026-08-16T22:00:00.000Z	36 \| good	6.285 \| good	27.878 \| good	39.147 \| good	1.028 \| good	1.118 \| good	0.146 \| good
2026-08-16T23:00:00.000Z	38 \| good	6.721 \| good	29.919 \| good	32.447 \| good	1.022 \| good	1.771 \| good	0.155 \| good
2026-08-17T00:00:00.000Z	24 \| good	4.406 \| good	19.079 \| good	25.539 \| good	0.926 \| good	2.322 \| good	0.161 \| good
2026-08-17T01:00:00.000Z	28 \| good	4.53 \| good	19.905 \| good	29.535 \| good	0.81 \| good	2.888 \| good	0.163 \| good
2026-08-17T02:00:00.000Z	27 \| good	4.943 \| good	21.013 \| good	26.982 \| good	0.694 \| good	3.379 \| good	0.164 \| good
2026-08-17T03:00:00.000Z	33 \| good	6.346 \| good	27.963 \| good	22.5 \| good	0.598 \| good	3.675 \| good	0.163 \| good
2026-08-17T04:00:00.000Z	38 \| good	7.295 \| good	32.061 \| good	22.296 \| good	0.53 \| good	4.188 \| good	0.163 \| good
2026-08-17T05:00:00.000Z	52 \| moderate	10.251 \| good	45.244 \| good	20.695 \| good	0.48 \| good	4.781 \| good	0.164 \| good
2026-08-17T06:00:00.000Z	56 \| moderate	12.116 \| fine	54.751 \| good	18.325 \| good	0.445 \| good	4.981 \| good	0.163 \| good
2026-08-17T07:00:00.000Z	52 \| moderate	10.346 \| good	45.809 \| good	16.584 \| good	0.433 \| good	5.377 \| good	0.164 \| good
2026-08-17T08:00:00.000Z	52 \| moderate	10.061 \| good	44.977 \| good	16.062 \| good	0.434 \| good	5.878 \| good	0.167 \| good
2026-08-17T09:00:00.000Z	52 \| moderate	10.462 \| good	46.075 \| good	14.56 \| good	0.45 \| good	6.175 \| good	0.17 \| good
2026-08-17T10:00:00.000Z	52 \| moderate	9.741 \| good	43.077 \| good	9.952 \| good	0.48 \| good	6.227 \| good	0.174 \| good
2026-08-17T11:00:00.000Z	52 \| moderate	10.275 \| good	45.743 \| good	12.518 \| good	0.512 \| good	6.175 \| good	0.181 \| good
2026-08-17T12:00:00.000Z	54 \| moderate	10.987 \| good	48.743 \| good	15.509 \| good	0.525 \| good	5.466 \| good	0.189 \| good
2026-08-17T13:00:00.000Z	49 \| good	9.429 \| good	41.914 \| good	20.213 \| good	0.596 \| good	3.834 \| good	0.197 \| good
2026-08-17T14:00:00.000Z	49 \| good	9.451 \| good	42.077 \| good	24.85 \| good	0.69 \| good	2.742 \| good	0.204 \| good
2026-08-17T15:00:00.000Z	44 \| good	8.419 \| good	36.977 \| good	31.471 \| good	0.841 \| good	1.798 \| good	0.205 \| good
2026-08-17T16:00:00.000Z	44 \| good	8.03 \| good	35.068 \| good	33.591 \| good	0.946 \| good	1.323 \| good	0.203 \| good
2026-08-17T17:00:00.000Z	49 \| good	8.887 \| good	38.977 \| good	35.073 \| good	0.887 \| good	0.997 \| good	0.199 \| good
2026-08-17T18:00:00.000Z	49 \| good	8.567 \| good	37.098 \| good	38.714 \| good	0.84 \| good	0.842 \| good	0.197 \| good
2026-08-17T19:00:00.000Z	44 \| good	7.792 \| good	34.035 \| good	42.169 \| good	0.817 \| good	0.786 \| good	0.198 \| good
2026-08-17T20:00:00.000Z	44 \| good	7.815 \| good	34.191 \| good	42.47 \| good	0.778 \| good	0.788 \| good	0.197 \| good
2026-08-17T21:00:00.000Z	49 \| good	8.615 \| good	37.284 \| good	37.763 \| good	0.744 \| good	0.828 \| good	0.197 \| good
2026-08-17T22:00:00.000Z	52 \| moderate	9.872 \| good	43.881 \| good	37.831 \| good	0.715 \| good	0.943 \| good	0.197 \| good

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Major air pollutants in O'Fallon, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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