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

The current PM10 concentration at O'fallon, Illinois is 39.814 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 0.771 ppb.

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

The current ozone (O3) concentration at O'fallon, Illinois is 29.039 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 4.03 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 7.798 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)

Good

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)

7.80 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

39.81 μg/m³

155

255

425

605+

Ozone (O₃)

29.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.77 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.03 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.19 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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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
2026-03-07T21:00:00.000Z	19 \| good	2.109 \| good	10.28 \| good	20.033 \| good	0.218 \| good	2.979 \| good	0.148 \| good
2026-03-07T22:00:00.000Z	22 \| good	3.71 \| good	16.424 \| good	16.616 \| good	0.237 \| good	3.061 \| good	0.148 \| good
2026-03-07T23:00:00.000Z	22 \| good	3.915 \| good	14.22 \| good	12.854 \| good	0.176 \| good	3.41 \| good	0.145 \| good
2026-03-08T00:00:00.000Z	22 \| good	3.787 \| good	12.825 \| good	13.663 \| good	0.205 \| good	3.716 \| good	0.145 \| good
2026-03-08T01:00:00.000Z	16 \| good	2.97 \| good	15.265 \| good	16.382 \| good	0.193 \| good	3.523 \| good	0.148 \| good
2026-03-08T02:00:00.000Z	27 \| good	4.537 \| good	11.781 \| good	18.392 \| good	0.267 \| good	3.667 \| good	0.145 \| good
2026-03-08T03:00:00.000Z	52 \| moderate	10.057 \| good	44.725 \| good	17.93 \| good	0.775 \| good	6.255 \| good	0.209 \| good
2026-03-08T04:00:00.000Z	27 \| good	4.684 \| good	16.959 \| good	18.989 \| good	0.256 \| good	3.555 \| good	0.109 \| good
2026-03-08T05:00:00.000Z	27 \| good	4.902 \| good	25.185 \| good	21.409 \| good	0.362 \| good	3.759 \| good	0.105 \| good
2026-03-08T06:00:00.000Z	22 \| good	4.353 \| good	14.65 \| good	20.394 \| good	0.209 \| good	9.324 \| good	0.173 \| good
2026-03-08T07:00:00.000Z	27 \| good	5.17 \| good	24.652 \| good	20.022 \| good	0.171 \| good	9.232 \| good	0.145 \| good
2026-03-08T08:00:00.000Z	33 \| good	6.048 \| good	19.723 \| good	17.553 \| good	0.264 \| good	8.643 \| good	0.144 \| good
2026-03-08T09:00:00.000Z	33 \| good	5.605 \| good	22.347 \| good	18.255 \| good	0.155 \| good	13.797 \| good	0.144 \| good
2026-03-08T10:00:00.000Z	27 \| good	5.485 \| good	17.088 \| good	16.622 \| good	0.3 \| good	2.618 \| good	0.144 \| good
2026-03-08T11:00:00.000Z	33 \| good	5.522 \| good	18.647 \| good	12.642 \| good	0.357 \| good	2.041 \| good	0.144 \| good
2026-03-08T12:00:00.000Z	33 \| good	5.807 \| good	19.897 \| good	12.377 \| good	0.421 \| good	2.348 \| good	0.144 \| good
2026-03-08T13:00:00.000Z	33 \| good	5.517 \| good	22.322 \| good	9.324 \| good	0.455 \| good	2.217 \| good	0.145 \| good
2026-03-08T14:00:00.000Z	33 \| good	5.842 \| good	24.278 \| good	9.634 \| good	0.548 \| good	2.599 \| good	0.144 \| good
2026-03-08T15:00:00.000Z	33 \| good	6.35 \| good	29.048 \| good	9.411 \| good	0.18 \| good	2.329 \| good	0.144 \| good
2026-03-08T16:00:00.000Z	38 \| good	6.9 \| good	26.102 \| good	11.49 \| good	0.28 \| good	1.982 \| good	0.177 \| good
2026-03-08T17:00:00.000Z	38 \| good	6.928 \| good	24.745 \| good	15.777 \| good	0.316 \| good	2.142 \| good	0.158 \| good
2026-03-08T18:00:00.000Z	38 \| good	6.542 \| good	24.041 \| good	22.016 \| good	0.471 \| good	2.853 \| good	0.144 \| good
2026-03-08T19:00:00.000Z	33 \| good	5.988 \| good	23.363 \| good	28.332 \| good	0.336 \| good	1.697 \| good	0.177 \| good
2026-03-08T20:00:00.000Z	31 \| good	4.775 \| good	19.751 \| good	32.6 \| good	0.224 \| good	3.082 \| good	0.191 \| good
2026-03-08T21:00:00.000Z	30 \| good	4.064 \| good	15.158 \| good	32.46 \| good	0.42 \| good	1.887 \| good	0.191 \| good
2026-03-08T22:00:00.000Z	32 \| good	3.518 \| good	10.007 \| good	35.355 \| good	0.216 \| good	1.878 \| good	0.175 \| good
2026-03-08T23:00:00.000Z	31 \| good	3.44 \| good	13.201 \| good	33.77 \| good	0.164 \| good	4.009 \| good	0.191 \| good
2026-03-09T00:00:00.000Z	31 \| good	3.498 \| good	15.228 \| good	34.196 \| good	0.253 \| good	5.677 \| good	0.206 \| good
2026-03-09T01:00:00.000Z	30 \| good	3.822 \| good	15.65 \| good	32.089 \| good	0.311 \| good	5.696 \| good	0.208 \| good
2026-03-09T02:00:00.000Z	28 \| good	3.741 \| good	16.996 \| good	29.652 \| good	0.313 \| good	3.876 \| good	0.241 \| good
2026-03-09T03:00:00.000Z	38 \| good	6.543 \| good	29.073 \| good	18.842 \| good	0.558 \| good	4.859 \| good	0.187 \| good
2026-03-09T04:00:00.000Z	25 \| good	3.691 \| good	15.478 \| good	26.646 \| good	0.305 \| good	6.174 \| good	0.306 \| good
2026-03-09T05:00:00.000Z	26 \| good	4.299 \| good	27.975 \| good	25.549 \| good	0.267 \| good	5.668 \| good	0.243 \| good
2026-03-09T06:00:00.000Z	25 \| good	4.418 \| good	27.131 \| good	24.491 \| good	0.192 \| good	5.462 \| good	0.227 \| good
2026-03-09T07:00:00.000Z	22 \| good	4.397 \| good	20.432 \| good	24.303 \| good	0.192 \| good	4.703 \| good	0.179 \| good
2026-03-09T08:00:00.000Z	27 \| good	4.706 \| good	19.785 \| good	23.272 \| good	0.443 \| good	4.68 \| good	0.21 \| good
2026-03-09T09:00:00.000Z	27 \| good	4.745 \| good	21.798 \| good	25.226 \| good	0.282 \| good	7.331 \| good	0.193 \| good
2026-03-09T10:00:00.000Z	27 \| good	4.503 \| good	18.685 \| good	26.256 \| good	0.1 \| good	5.715 \| good	0.24 \| good
2026-03-09T11:00:00.000Z	27 \| good	4.529 \| good	18.841 \| good	25.563 \| good	0.178 \| good	6.963 \| good	0.258 \| good
2026-03-09T12:00:00.000Z	27 \| good	4.939 \| good	16.536 \| good	24.314 \| good	0.218 \| good	8.294 \| good	0.241 \| good
2026-03-09T13:00:00.000Z	27 \| good	5.138 \| good	21.352 \| good	20.201 \| good	0.218 \| good	9.442 \| good	0.194 \| good
2026-03-09T14:00:00.000Z	27 \| good	4.555 \| good	20.853 \| good	15.594 \| good	0.467 \| good	9.844 \| good	0.279 \| good
2026-03-09T15:00:00.000Z	27 \| good	5.194 \| good	24.993 \| good	19.82 \| good	0.459 \| good	6.06 \| good	0.235 \| good
2026-03-09T16:00:00.000Z	33 \| good	5.709 \| good	27.023 \| good	22.847 \| good	0.487 \| good	4.505 \| good	0.186 \| good
2026-03-09T17:00:00.000Z	38 \| good	6.553 \| good	28.69 \| good	28.018 \| good	0.618 \| good	4.3 \| good	0.181 \| good
2026-03-09T18:00:00.000Z	38 \| good	7.19 \| good	31.171 \| good	24.731 \| good	1.269 \| good	4.196 \| good	0.181 \| good
2026-03-09T19:00:00.000Z	38 \| good	7.498 \| good	38.252 \| good	28.985 \| good	0.774 \| good	3.951 \| good	0.186 \| good
2026-03-09T20:00:00.000Z	44 \| good	8.49 \| good	45.656 \| good	28.309 \| good	0.895 \| good	4.028 \| good	0.189 \| good
2026-03-09T20:00:00.000Z	44 \| good	7.798 \| good	39.814 \| good	29.039 \| good	0.771 \| good	4.03 \| good	0.186 \| good
2026-03-09T21:00:00.000Z	33 \| good	6.24 \| good	27.894 \| good	25.928 \| good	0.525 \| good	1.063 \| good	0.139 \| good
2026-03-09T22:00:00.000Z	44 \| good	7.547 \| good	33.387 \| good	26.112 \| good	0.513 \| good	1.775 \| good	0.141 \| good
2026-03-09T23:00:00.000Z	44 \| good	8.042 \| good	35.177 \| good	29.997 \| good	0.502 \| good	2.487 \| good	0.143 \| good
2026-03-10T00:00:00.000Z	33 \| good	5.566 \| good	23.763 \| good	27.715 \| good	0.49 \| good	3.199 \| good	0.145 \| good
2026-03-10T01:00:00.000Z	33 \| good	6.279 \| good	28.023 \| good	25.532 \| good	0.486 \| good	3.061 \| good	0.143 \| good
2026-03-10T02:00:00.000Z	44 \| good	8.145 \| good	35.792 \| good	24.23 \| good	0.483 \| good	2.922 \| good	0.141 \| good
2026-03-10T03:00:00.000Z	49 \| good	8.875 \| good	38.967 \| good	23.413 \| good	0.479 \| good	2.784 \| good	0.138 \| good
2026-03-10T04:00:00.000Z	52 \| moderate	9.728 \| good	43.202 \| good	24.468 \| good	0.476 \| good	2.63 \| good	0.134 \| good
2026-03-10T05:00:00.000Z	52 \| moderate	10.083 \| good	44.93 \| good	22.948 \| good	0.474 \| good	2.476 \| good	0.13 \| good
2026-03-10T06:00:00.000Z	49 \| good	8.91 \| good	39.072 \| good	21.405 \| good	0.472 \| good	2.322 \| good	0.125 \| good
2026-03-10T07:00:00.000Z	49 \| good	8.672 \| good	37.894 \| good	21.031 \| good	0.462 \| good	2.219 \| good	0.122 \| good
2026-03-10T08:00:00.000Z	38 \| good	7.414 \| good	32.475 \| good	19.588 \| good	0.451 \| good	2.115 \| good	0.12 \| good
2026-03-10T09:00:00.000Z	38 \| good	6.796 \| good	30.031 \| good	17.534 \| good	0.441 \| good	2.012 \| good	0.117 \| good
2026-03-10T10:00:00.000Z	33 \| good	5.896 \| good	25.894 \| good	17.751 \| good	0.461 \| good	2.136 \| good	0.118 \| good
2026-03-10T11:00:00.000Z	38 \| good	6.729 \| good	30.036 \| good	15.724 \| good	0.481 \| good	2.259 \| good	0.119 \| good
2026-03-10T12:00:00.000Z	38 \| good	7.472 \| good	32.981 \| good	15.958 \| good	0.501 \| good	2.383 \| good	0.12 \| good
2026-03-10T13:00:00.000Z	49 \| good	8.951 \| good	39.595 \| good	13.75 \| good	0.523 \| good	2.393 \| good	0.124 \| good
2026-03-10T14:00:00.000Z	49 \| good	8.58 \| good	37.481 \| good	18.644 \| good	0.546 \| good	2.403 \| good	0.128 \| good
2026-03-10T15:00:00.000Z	49 \| good	8.519 \| good	37.286 \| good	22.9 \| good	0.568 \| good	2.414 \| good	0.132 \| good
2026-03-10T16:00:00.000Z	38 \| good	7.4 \| good	32.632 \| good	26.598 \| good	0.552 \| good	2.163 \| good	0.13 \| good
2026-03-10T17:00:00.000Z	38 \| good	6.869 \| good	30.409 \| good	26.863 \| good	0.536 \| good	1.913 \| good	0.129 \| good
2026-03-10T18:00:00.000Z	44 \| good	7.975 \| good	34.705 \| good	22.496 \| good	0.52 \| good	1.663 \| good	0.127 \| good
2026-03-10T19:00:00.000Z	38 \| good	7.346 \| good	32.373 \| good	22.222 \| good	0.503 \| good	1.467 \| good	0.126 \| good
2026-03-10T20:00:00.000Z	44 \| good	8.055 \| good	35.317 \| good	18.591 \| good	0.485 \| good	1.271 \| good	0.125 \| good
2026-03-10T21:00:00.000Z	44 \| good	7.713 \| good	33.806 \| good	17.674 \| good	0.468 \| good	1.076 \| good	0.124 \| good
2026-03-10T22:00:00.000Z	49 \| good	8.712 \| good	38.348 \| good	18.935 \| good	0.469 \| good	1.655 \| good	0.127 \| good
2026-03-10T23:00:00.000Z	49 \| good	9.186 \| good	40.527 \| good	20.806 \| good	0.47 \| good	2.234 \| good	0.13 \| good
2026-03-11T00:00:00.000Z	33 \| good	6.183 \| good	27.5 \| good	18.548 \| good	0.471 \| good	2.814 \| good	0.133 \| good
2026-03-11T01:00:00.000Z	33 \| good	6.223 \| good	27.936 \| good	20.685 \| good	0.473 \| good	2.611 \| good	0.129 \| good
2026-03-11T02:00:00.000Z	52 \| moderate	10.336 \| good	45.829 \| good	22.253 \| good	0.475 \| good	2.407 \| good	0.125 \| good
2026-03-11T03:00:00.000Z	49 \| good	9.412 \| good	42.039 \| good	19.151 \| good	0.477 \| good	2.204 \| good	0.121 \| good
2026-03-11T04:00:00.000Z	52 \| moderate	10.283 \| good	45.475 \| good	20.317 \| good	0.485 \| good	2.076 \| good	0.118 \| good
2026-03-11T05:00:00.000Z	54 \| moderate	10.929 \| good	48.205 \| good	19.562 \| good	0.493 \| good	1.948 \| good	0.115 \| good
2026-03-11T06:00:00.000Z	49 \| good	8.868 \| good	9.061 \| good	32.916 \| good	0.5 \| good	1.81 \| good	0.113 \| good
2026-03-11T07:00:00.000Z	49 \| good	9.389 \| good	41.986 \| good	20.185 \| good	0.488 \| good	1.733 \| good	0.113 \| good
2026-03-11T08:00:00.000Z	22 \| good	4.36 \| good	19 \| good	18.68 \| good	0.476 \| good	1.646 \| good	0.113 \| good
2026-03-11T09:00:00.000Z	22 \| good	3.517 \| good	15.76 \| good	18.611 \| good	0.464 \| good	1.559 \| good	0.113 \| good
2026-03-11T10:00:00.000Z	22 \| good	4.101 \| good	17.931 \| good	22.383 \| good	0.43 \| good	1.497 \| good	0.112 \| good
2026-03-11T11:00:00.000Z	22 \| good	3.503 \| good	15.37 \| good	22.661 \| good	0.396 \| good	1.434 \| good	0.112 \| good
2026-03-11T12:00:00.000Z	28 \| good	4.247 \| good	4.376 \| good	30.478 \| good	0.361 \| good	1.365 \| good	0.112 \| good
2026-03-11T13:00:00.000Z	27 \| good	4.14 \| good	4.284 \| good	28.99 \| good	0.419 \| good	1.758 \| good	0.115 \| good
2026-03-11T14:00:00.000Z	26 \| good	4.287 \| good	4.464 \| good	27.503 \| good	0.477 \| good	2.15 \| good	0.118 \| good
2026-03-11T15:00:00.000Z	24 \| good	4.249 \| good	4.453 \| good	26.015 \| good	0.534 \| good	2.543 \| good	0.122 \| good
2026-03-11T16:00:00.000Z	22 \| good	4.044 \| good	4.187 \| good	24.342 \| good	0.545 \| good	2.866 \| good	0.139 \| good
2026-03-11T17:00:00.000Z	44 \| good	8.452 \| good	37.019 \| good	19.88 \| good	0.551 \| good	3.186 \| good	0.157 \| good
2026-03-11T18:00:00.000Z	19 \| good	1.613 \| good	1.616 \| good	20.995 \| good	0.565 \| good	3.514 \| good	0.174 \| good
2026-03-11T19:00:00.000Z	19 \| good	1.472 \| good	1.484 \| good	21.43 \| good	0.605 \| good	3.576 \| good	0.179 \| good
2026-03-11T20:00:00.000Z	20 \| good	1.512 \| good	1.495 \| good	21.866 \| good	0.645 \| good	3.637 \| good	0.183 \| good

O'Fallon

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

0.17ppm

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 07:00:00 on 2026-03-09.

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 2026-03-09.

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

The current air quality in O'fallon, Illinois is 44, categorized as Good based on real-time data.

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

The most common pollutant in O'fallon, Illinois is PM2.5.

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 7.798 μg/m³.

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

The current PM₁₀ concentration at O'fallon, Illinois is 39.814 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 0.186 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 0.771 ppb.

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

The current ozone (O₃) concentration at O'fallon, Illinois is 29.039 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 4.03 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-07T21:00:00.000Z	19 \| good	2.109 \| good	10.28 \| good	20.033 \| good	0.218 \| good	2.979 \| good	0.148 \| good
2026-03-07T22:00:00.000Z	22 \| good	3.71 \| good	16.424 \| good	16.616 \| good	0.237 \| good	3.061 \| good	0.148 \| good
2026-03-07T23:00:00.000Z	22 \| good	3.915 \| good	14.22 \| good	12.854 \| good	0.176 \| good	3.41 \| good	0.145 \| good
2026-03-08T00:00:00.000Z	22 \| good	3.787 \| good	12.825 \| good	13.663 \| good	0.205 \| good	3.716 \| good	0.145 \| good
2026-03-08T01:00:00.000Z	16 \| good	2.97 \| good	15.265 \| good	16.382 \| good	0.193 \| good	3.523 \| good	0.148 \| good
2026-03-08T02:00:00.000Z	27 \| good	4.537 \| good	11.781 \| good	18.392 \| good	0.267 \| good	3.667 \| good	0.145 \| good
2026-03-08T03:00:00.000Z	52 \| moderate	10.057 \| good	44.725 \| good	17.93 \| good	0.775 \| good	6.255 \| good	0.209 \| good
2026-03-08T04:00:00.000Z	27 \| good	4.684 \| good	16.959 \| good	18.989 \| good	0.256 \| good	3.555 \| good	0.109 \| good
2026-03-08T05:00:00.000Z	27 \| good	4.902 \| good	25.185 \| good	21.409 \| good	0.362 \| good	3.759 \| good	0.105 \| good
2026-03-08T06:00:00.000Z	22 \| good	4.353 \| good	14.65 \| good	20.394 \| good	0.209 \| good	9.324 \| good	0.173 \| good
2026-03-08T07:00:00.000Z	27 \| good	5.17 \| good	24.652 \| good	20.022 \| good	0.171 \| good	9.232 \| good	0.145 \| good
2026-03-08T08:00:00.000Z	33 \| good	6.048 \| good	19.723 \| good	17.553 \| good	0.264 \| good	8.643 \| good	0.144 \| good
2026-03-08T09:00:00.000Z	33 \| good	5.605 \| good	22.347 \| good	18.255 \| good	0.155 \| good	13.797 \| good	0.144 \| good
2026-03-08T10:00:00.000Z	27 \| good	5.485 \| good	17.088 \| good	16.622 \| good	0.3 \| good	2.618 \| good	0.144 \| good
2026-03-08T11:00:00.000Z	33 \| good	5.522 \| good	18.647 \| good	12.642 \| good	0.357 \| good	2.041 \| good	0.144 \| good
2026-03-08T12:00:00.000Z	33 \| good	5.807 \| good	19.897 \| good	12.377 \| good	0.421 \| good	2.348 \| good	0.144 \| good
2026-03-08T13:00:00.000Z	33 \| good	5.517 \| good	22.322 \| good	9.324 \| good	0.455 \| good	2.217 \| good	0.145 \| good
2026-03-08T14:00:00.000Z	33 \| good	5.842 \| good	24.278 \| good	9.634 \| good	0.548 \| good	2.599 \| good	0.144 \| good
2026-03-08T15:00:00.000Z	33 \| good	6.35 \| good	29.048 \| good	9.411 \| good	0.18 \| good	2.329 \| good	0.144 \| good
2026-03-08T16:00:00.000Z	38 \| good	6.9 \| good	26.102 \| good	11.49 \| good	0.28 \| good	1.982 \| good	0.177 \| good
2026-03-08T17:00:00.000Z	38 \| good	6.928 \| good	24.745 \| good	15.777 \| good	0.316 \| good	2.142 \| good	0.158 \| good
2026-03-08T18:00:00.000Z	38 \| good	6.542 \| good	24.041 \| good	22.016 \| good	0.471 \| good	2.853 \| good	0.144 \| good
2026-03-08T19:00:00.000Z	33 \| good	5.988 \| good	23.363 \| good	28.332 \| good	0.336 \| good	1.697 \| good	0.177 \| good
2026-03-08T20:00:00.000Z	31 \| good	4.775 \| good	19.751 \| good	32.6 \| good	0.224 \| good	3.082 \| good	0.191 \| good
2026-03-08T21:00:00.000Z	30 \| good	4.064 \| good	15.158 \| good	32.46 \| good	0.42 \| good	1.887 \| good	0.191 \| good
2026-03-08T22:00:00.000Z	32 \| good	3.518 \| good	10.007 \| good	35.355 \| good	0.216 \| good	1.878 \| good	0.175 \| good
2026-03-08T23:00:00.000Z	31 \| good	3.44 \| good	13.201 \| good	33.77 \| good	0.164 \| good	4.009 \| good	0.191 \| good
2026-03-09T00:00:00.000Z	31 \| good	3.498 \| good	15.228 \| good	34.196 \| good	0.253 \| good	5.677 \| good	0.206 \| good
2026-03-09T01:00:00.000Z	30 \| good	3.822 \| good	15.65 \| good	32.089 \| good	0.311 \| good	5.696 \| good	0.208 \| good
2026-03-09T02:00:00.000Z	28 \| good	3.741 \| good	16.996 \| good	29.652 \| good	0.313 \| good	3.876 \| good	0.241 \| good
2026-03-09T03:00:00.000Z	38 \| good	6.543 \| good	29.073 \| good	18.842 \| good	0.558 \| good	4.859 \| good	0.187 \| good
2026-03-09T04:00:00.000Z	25 \| good	3.691 \| good	15.478 \| good	26.646 \| good	0.305 \| good	6.174 \| good	0.306 \| good
2026-03-09T05:00:00.000Z	26 \| good	4.299 \| good	27.975 \| good	25.549 \| good	0.267 \| good	5.668 \| good	0.243 \| good
2026-03-09T06:00:00.000Z	25 \| good	4.418 \| good	27.131 \| good	24.491 \| good	0.192 \| good	5.462 \| good	0.227 \| good
2026-03-09T07:00:00.000Z	22 \| good	4.397 \| good	20.432 \| good	24.303 \| good	0.192 \| good	4.703 \| good	0.179 \| good
2026-03-09T08:00:00.000Z	27 \| good	4.706 \| good	19.785 \| good	23.272 \| good	0.443 \| good	4.68 \| good	0.21 \| good
2026-03-09T09:00:00.000Z	27 \| good	4.745 \| good	21.798 \| good	25.226 \| good	0.282 \| good	7.331 \| good	0.193 \| good
2026-03-09T10:00:00.000Z	27 \| good	4.503 \| good	18.685 \| good	26.256 \| good	0.1 \| good	5.715 \| good	0.24 \| good
2026-03-09T11:00:00.000Z	27 \| good	4.529 \| good	18.841 \| good	25.563 \| good	0.178 \| good	6.963 \| good	0.258 \| good
2026-03-09T12:00:00.000Z	27 \| good	4.939 \| good	16.536 \| good	24.314 \| good	0.218 \| good	8.294 \| good	0.241 \| good
2026-03-09T13:00:00.000Z	27 \| good	5.138 \| good	21.352 \| good	20.201 \| good	0.218 \| good	9.442 \| good	0.194 \| good
2026-03-09T14:00:00.000Z	27 \| good	4.555 \| good	20.853 \| good	15.594 \| good	0.467 \| good	9.844 \| good	0.279 \| good
2026-03-09T15:00:00.000Z	27 \| good	5.194 \| good	24.993 \| good	19.82 \| good	0.459 \| good	6.06 \| good	0.235 \| good
2026-03-09T16:00:00.000Z	33 \| good	5.709 \| good	27.023 \| good	22.847 \| good	0.487 \| good	4.505 \| good	0.186 \| good
2026-03-09T17:00:00.000Z	38 \| good	6.553 \| good	28.69 \| good	28.018 \| good	0.618 \| good	4.3 \| good	0.181 \| good
2026-03-09T18:00:00.000Z	38 \| good	7.19 \| good	31.171 \| good	24.731 \| good	1.269 \| good	4.196 \| good	0.181 \| good
2026-03-09T19:00:00.000Z	38 \| good	7.498 \| good	38.252 \| good	28.985 \| good	0.774 \| good	3.951 \| good	0.186 \| good
2026-03-09T20:00:00.000Z	44 \| good	8.49 \| good	45.656 \| good	28.309 \| good	0.895 \| good	4.028 \| good	0.189 \| good
2026-03-09T20:00:00.000Z	44 \| good	7.798 \| good	39.814 \| good	29.039 \| good	0.771 \| good	4.03 \| good	0.186 \| good
2026-03-09T21:00:00.000Z	33 \| good	6.24 \| good	27.894 \| good	25.928 \| good	0.525 \| good	1.063 \| good	0.139 \| good
2026-03-09T22:00:00.000Z	44 \| good	7.547 \| good	33.387 \| good	26.112 \| good	0.513 \| good	1.775 \| good	0.141 \| good
2026-03-09T23:00:00.000Z	44 \| good	8.042 \| good	35.177 \| good	29.997 \| good	0.502 \| good	2.487 \| good	0.143 \| good
2026-03-10T00:00:00.000Z	33 \| good	5.566 \| good	23.763 \| good	27.715 \| good	0.49 \| good	3.199 \| good	0.145 \| good
2026-03-10T01:00:00.000Z	33 \| good	6.279 \| good	28.023 \| good	25.532 \| good	0.486 \| good	3.061 \| good	0.143 \| good
2026-03-10T02:00:00.000Z	44 \| good	8.145 \| good	35.792 \| good	24.23 \| good	0.483 \| good	2.922 \| good	0.141 \| good
2026-03-10T03:00:00.000Z	49 \| good	8.875 \| good	38.967 \| good	23.413 \| good	0.479 \| good	2.784 \| good	0.138 \| good
2026-03-10T04:00:00.000Z	52 \| moderate	9.728 \| good	43.202 \| good	24.468 \| good	0.476 \| good	2.63 \| good	0.134 \| good
2026-03-10T05:00:00.000Z	52 \| moderate	10.083 \| good	44.93 \| good	22.948 \| good	0.474 \| good	2.476 \| good	0.13 \| good
2026-03-10T06:00:00.000Z	49 \| good	8.91 \| good	39.072 \| good	21.405 \| good	0.472 \| good	2.322 \| good	0.125 \| good
2026-03-10T07:00:00.000Z	49 \| good	8.672 \| good	37.894 \| good	21.031 \| good	0.462 \| good	2.219 \| good	0.122 \| good
2026-03-10T08:00:00.000Z	38 \| good	7.414 \| good	32.475 \| good	19.588 \| good	0.451 \| good	2.115 \| good	0.12 \| good
2026-03-10T09:00:00.000Z	38 \| good	6.796 \| good	30.031 \| good	17.534 \| good	0.441 \| good	2.012 \| good	0.117 \| good
2026-03-10T10:00:00.000Z	33 \| good	5.896 \| good	25.894 \| good	17.751 \| good	0.461 \| good	2.136 \| good	0.118 \| good
2026-03-10T11:00:00.000Z	38 \| good	6.729 \| good	30.036 \| good	15.724 \| good	0.481 \| good	2.259 \| good	0.119 \| good
2026-03-10T12:00:00.000Z	38 \| good	7.472 \| good	32.981 \| good	15.958 \| good	0.501 \| good	2.383 \| good	0.12 \| good
2026-03-10T13:00:00.000Z	49 \| good	8.951 \| good	39.595 \| good	13.75 \| good	0.523 \| good	2.393 \| good	0.124 \| good
2026-03-10T14:00:00.000Z	49 \| good	8.58 \| good	37.481 \| good	18.644 \| good	0.546 \| good	2.403 \| good	0.128 \| good
2026-03-10T15:00:00.000Z	49 \| good	8.519 \| good	37.286 \| good	22.9 \| good	0.568 \| good	2.414 \| good	0.132 \| good
2026-03-10T16:00:00.000Z	38 \| good	7.4 \| good	32.632 \| good	26.598 \| good	0.552 \| good	2.163 \| good	0.13 \| good
2026-03-10T17:00:00.000Z	38 \| good	6.869 \| good	30.409 \| good	26.863 \| good	0.536 \| good	1.913 \| good	0.129 \| good
2026-03-10T18:00:00.000Z	44 \| good	7.975 \| good	34.705 \| good	22.496 \| good	0.52 \| good	1.663 \| good	0.127 \| good
2026-03-10T19:00:00.000Z	38 \| good	7.346 \| good	32.373 \| good	22.222 \| good	0.503 \| good	1.467 \| good	0.126 \| good
2026-03-10T20:00:00.000Z	44 \| good	8.055 \| good	35.317 \| good	18.591 \| good	0.485 \| good	1.271 \| good	0.125 \| good
2026-03-10T21:00:00.000Z	44 \| good	7.713 \| good	33.806 \| good	17.674 \| good	0.468 \| good	1.076 \| good	0.124 \| good
2026-03-10T22:00:00.000Z	49 \| good	8.712 \| good	38.348 \| good	18.935 \| good	0.469 \| good	1.655 \| good	0.127 \| good
2026-03-10T23:00:00.000Z	49 \| good	9.186 \| good	40.527 \| good	20.806 \| good	0.47 \| good	2.234 \| good	0.13 \| good
2026-03-11T00:00:00.000Z	33 \| good	6.183 \| good	27.5 \| good	18.548 \| good	0.471 \| good	2.814 \| good	0.133 \| good
2026-03-11T01:00:00.000Z	33 \| good	6.223 \| good	27.936 \| good	20.685 \| good	0.473 \| good	2.611 \| good	0.129 \| good
2026-03-11T02:00:00.000Z	52 \| moderate	10.336 \| good	45.829 \| good	22.253 \| good	0.475 \| good	2.407 \| good	0.125 \| good
2026-03-11T03:00:00.000Z	49 \| good	9.412 \| good	42.039 \| good	19.151 \| good	0.477 \| good	2.204 \| good	0.121 \| good
2026-03-11T04:00:00.000Z	52 \| moderate	10.283 \| good	45.475 \| good	20.317 \| good	0.485 \| good	2.076 \| good	0.118 \| good
2026-03-11T05:00:00.000Z	54 \| moderate	10.929 \| good	48.205 \| good	19.562 \| good	0.493 \| good	1.948 \| good	0.115 \| good
2026-03-11T06:00:00.000Z	49 \| good	8.868 \| good	9.061 \| good	32.916 \| good	0.5 \| good	1.81 \| good	0.113 \| good
2026-03-11T07:00:00.000Z	49 \| good	9.389 \| good	41.986 \| good	20.185 \| good	0.488 \| good	1.733 \| good	0.113 \| good
2026-03-11T08:00:00.000Z	22 \| good	4.36 \| good	19 \| good	18.68 \| good	0.476 \| good	1.646 \| good	0.113 \| good
2026-03-11T09:00:00.000Z	22 \| good	3.517 \| good	15.76 \| good	18.611 \| good	0.464 \| good	1.559 \| good	0.113 \| good
2026-03-11T10:00:00.000Z	22 \| good	4.101 \| good	17.931 \| good	22.383 \| good	0.43 \| good	1.497 \| good	0.112 \| good
2026-03-11T11:00:00.000Z	22 \| good	3.503 \| good	15.37 \| good	22.661 \| good	0.396 \| good	1.434 \| good	0.112 \| good
2026-03-11T12:00:00.000Z	28 \| good	4.247 \| good	4.376 \| good	30.478 \| good	0.361 \| good	1.365 \| good	0.112 \| good
2026-03-11T13:00:00.000Z	27 \| good	4.14 \| good	4.284 \| good	28.99 \| good	0.419 \| good	1.758 \| good	0.115 \| good
2026-03-11T14:00:00.000Z	26 \| good	4.287 \| good	4.464 \| good	27.503 \| good	0.477 \| good	2.15 \| good	0.118 \| good
2026-03-11T15:00:00.000Z	24 \| good	4.249 \| good	4.453 \| good	26.015 \| good	0.534 \| good	2.543 \| good	0.122 \| good
2026-03-11T16:00:00.000Z	22 \| good	4.044 \| good	4.187 \| good	24.342 \| good	0.545 \| good	2.866 \| good	0.139 \| good
2026-03-11T17:00:00.000Z	44 \| good	8.452 \| good	37.019 \| good	19.88 \| good	0.551 \| good	3.186 \| good	0.157 \| good
2026-03-11T18:00:00.000Z	19 \| good	1.613 \| good	1.616 \| good	20.995 \| good	0.565 \| good	3.514 \| good	0.174 \| good
2026-03-11T19:00:00.000Z	19 \| good	1.472 \| good	1.484 \| good	21.43 \| good	0.605 \| good	3.576 \| good	0.179 \| good
2026-03-11T20:00:00.000Z	20 \| good	1.512 \| good	1.495 \| good	21.866 \| good	0.645 \| good	3.637 \| good	0.183 \| 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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