What are the current PM10 levels at O'fallon, Missouri?

The current PM10 levels in O'fallon, Missouri are 24.546 μg/m3.

What are the current sulfur dioxide (SO2) levels at O'fallon, Missouri?

The current sulfur dioxide (SO2) levels in O'fallon, Missouri are 0.621 ppb.

What are the current ozone (O3) levels at O'fallon, Missouri?

The current ozone (O3) levels at O'fallon, Missouri is 44.19 ppm.

What are the current nitrogen dioxide (NO2) levels at O'fallon, Missouri?

The current nitrogen dioxide (NO2) levels at O'fallon, Missouri is 2.984 ppb.

Real-time air quality index in O'Fallon, Missouri today

Q: What are the current PM2.5 levels in O'fallon, Missouri?

The measured PM2.5 levels in O'fallon, Missouri at present are 5.907 μg/m3.

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

Last updated: ... (Local time)

Common air pollutants in O'Fallon, Missouri

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.91 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

24.55 μg/m³

155

255

425

605+

Ozone (O₃)

44.19 ppb

201

201+

Sulfur Dioxide (SO₂)

0.62 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.98 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.22 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, Missouri

Scroll To Air Quality Map

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

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-22T01:00:00.000Z	56 \| moderate	12.186 \| fine	46.243 \| good	44.152 \| good	0.674 \| good	1.88 \| good	0.21 \| good
2026-07-22T02:00:00.000Z	60 \| moderate	13.635 \| fine	56.585 \| fine	41.147 \| good	0.578 \| good	2.063 \| good	0.21 \| good
2026-07-22T03:00:00.000Z	56 \| moderate	11.671 \| good	40.316 \| good	39.299 \| good	0.54 \| good	2.122 \| good	0.21 \| good
2026-07-22T04:00:00.000Z	52 \| moderate	10.051 \| good	51.147 \| good	37.268 \| good	0.597 \| good	3.601 \| good	0.21 \| good
2026-07-22T05:00:00.000Z	52 \| moderate	9.983 \| good	52.287 \| good	36.344 \| good	0.523 \| good	2.241 \| good	0.21 \| good
2026-07-22T06:00:00.000Z	48 \| good	8.459 \| good	51.852 \| good	36.453 \| good	0.541 \| good	2.215 \| good	0.21 \| good
2026-07-22T07:00:00.000Z	54 \| moderate	11.485 \| good	33.871 \| good	34.822 \| good	0.537 \| good	2.199 \| good	0.205 \| good
2026-07-22T08:00:00.000Z	52 \| moderate	9.65 \| good	41.675 \| good	33.832 \| good	0.542 \| good	2.194 \| good	0.205 \| good
2026-07-22T09:00:00.000Z	52 \| moderate	10.266 \| good	49.295 \| good	33.754 \| good	0.359 \| good	1.79 \| good	0.217 \| good
2026-07-22T10:00:00.000Z	56 \| moderate	11.933 \| good	61.613 \| fine	28.583 \| good	0.582 \| good	3.616 \| good	0.205 \| good
2026-07-22T11:00:00.000Z	56 \| moderate	11.904 \| good	44.253 \| good	30.994 \| good	0.54 \| good	4.092 \| good	0.205 \| good
2026-07-22T12:00:00.000Z	56 \| moderate	11.558 \| good	54.809 \| good	27.733 \| good	0.488 \| good	5.307 \| good	0.198 \| good
2026-07-22T13:00:00.000Z	56 \| moderate	12.374 \| fine	58.618 \| fine	28.93 \| good	0.537 \| good	4.585 \| good	0.204 \| good
2026-07-22T14:00:00.000Z	54 \| moderate	10.662 \| good	54.954 \| good	29.166 \| good	0.741 \| good	4.498 \| good	0.198 \| good
2026-07-22T15:00:00.000Z	50 \| good	9.47 \| good	54.116 \| good	28.774 \| good	1.191 \| good	4.517 \| good	0.233 \| good
2026-07-22T16:00:00.000Z	49 \| good	8.745 \| good	49.442 \| good	28.68 \| good	0.951 \| good	3.559 \| good	0.198 \| good
2026-07-22T17:00:00.000Z	35 \| good	6.118 \| good	38.255 \| good	29.749 \| good	0.55 \| good	3.139 \| good	0.198 \| good
2026-07-22T18:00:00.000Z	38 \| good	6.643 \| good	30.145 \| good	32.715 \| good	0.505 \| good	2.587 \| good	0.198 \| good
2026-07-22T19:00:00.000Z	44 \| good	5.966 \| good	47.554 \| good	33.339 \| good	0.661 \| good	1.776 \| good	0.198 \| good
2026-07-22T20:00:00.000Z	33 \| good	5.792 \| good	32.778 \| good	33.407 \| good	0.725 \| good	2.216 \| good	0.198 \| good
2026-07-22T21:00:00.000Z	38 \| good	6.667 \| good	28.996 \| good	37.283 \| good	0.661 \| good	2.263 \| good	0.198 \| good
2026-07-22T22:00:00.000Z	49 \| good	9.382 \| good	35.099 \| good	37.037 \| good	0.597 \| good	2.441 \| good	0.198 \| good
2026-07-22T23:00:00.000Z	44 \| good	8.476 \| good	22.905 \| good	37.405 \| good	0.659 \| good	3.12 \| good	0.198 \| good
2026-07-23T00:00:00.000Z	44 \| good	7.999 \| good	31.057 \| good	37.225 \| good	0.698 \| good	3.341 \| good	0.198 \| good
2026-07-23T01:00:00.000Z	35 \| good	6.473 \| good	21.401 \| good	37.872 \| good	0.672 \| good	3.361 \| good	0.198 \| good
2026-07-23T02:00:00.000Z	33 \| good	5.781 \| good	26.045 \| good	34.599 \| good	0.538 \| good	3.48 \| good	0.205 \| good
2026-07-23T03:00:00.000Z	28 \| good	1.971 \| good	7.865 \| good	29.859 \| good	0.541 \| good	3.632 \| good	0.209 \| good
2026-07-23T04:00:00.000Z	33 \| good	6.417 \| good	24.027 \| good	31.775 \| good	0.545 \| good	4.203 \| good	0.211 \| good
2026-07-23T05:00:00.000Z	33 \| good	5.868 \| good	21.932 \| good	28.677 \| good	0.538 \| good	5.515 \| good	0.205 \| good
2026-07-23T06:00:00.000Z	33 \| good	6.132 \| good	22.281 \| good	28.909 \| good	0.909 \| good	6.311 \| good	0.205 \| good
2026-07-23T07:00:00.000Z	33 \| good	6.283 \| good	24.661 \| good	28.399 \| good	0.897 \| good	6.373 \| good	0.205 \| good
2026-07-23T08:00:00.000Z	33 \| good	6.482 \| good	25.615 \| good	27.117 \| good	0.897 \| good	6.404 \| good	0.199 \| good
2026-07-23T09:00:00.000Z	27 \| good	5.073 \| good	18.545 \| good	19.557 \| good	0.742 \| good	5.912 \| good	0.199 \| good
2026-07-23T10:00:00.000Z	22 \| good	4.066 \| good	16.342 \| good	23.082 \| good	0.518 \| good	6.241 \| good	0.199 \| good
2026-07-23T11:00:00.000Z	20 \| good	3.361 \| good	13.391 \| good	22.059 \| good	0.63 \| good	6.699 \| good	0.154 \| good
2026-07-23T12:00:00.000Z	30 \| good	5.079 \| good	32.184 \| good	16.308 \| good	0.668 \| good	8.613 \| good	0.205 \| good
2026-07-23T13:00:00.000Z	33 \| good	5.66 \| good	24.519 \| good	18.829 \| good	0.901 \| good	8.674 \| good	0.249 \| good
2026-07-23T14:00:00.000Z	27 \| good	5.392 \| good	17.916 \| good	23.378 \| good	0.724 \| good	7.941 \| good	0.263 \| good
2026-07-23T15:00:00.000Z	27 \| good	4.619 \| good	14.919 \| good	27.088 \| good	0.747 \| good	7.251 \| good	0.222 \| good
2026-07-23T16:00:00.000Z	28 \| good	3.66 \| good	14.37 \| good	30.404 \| good	0.736 \| good	6.436 \| good	0.211 \| good
2026-07-23T17:00:00.000Z	31 \| good	4.62 \| good	31.407 \| good	33.507 \| good	1.144 \| good	3.075 \| good	0.208 \| good
2026-07-23T18:00:00.000Z	35 \| good	4.411 \| good	16.934 \| good	38.081 \| good	1.134 \| good	2.778 \| good	0.216 \| good
2026-07-23T19:00:00.000Z	37 \| good	6.475 \| good	30.017 \| good	39.687 \| good	0.915 \| good	2.96 \| good	0.216 \| good
2026-07-23T20:00:00.000Z	39 \| good	5.759 \| good	24.231 \| good	41.721 \| good	0.767 \| good	2.61 \| good	0.211 \| good
2026-07-23T21:00:00.000Z	39 \| good	4.549 \| good	18.478 \| good	41.653 \| good	0.966 \| good	2.581 \| good	0.211 \| good
2026-07-23T22:00:00.000Z	41 \| good	5.045 \| good	23.856 \| good	43.553 \| good	0.862 \| good	2.99 \| good	0.204 \| good
2026-07-23T23:00:00.000Z	41 \| good	5.907 \| good	24.546 \| good	44.19 \| good	0.621 \| good	2.984 \| good	0.216 \| good
2026-07-24T00:00:00.000Z	40 \| good	5.765 \| good	21.215 \| good	43.075 \| good	0.508 \| good	2.827 \| good	0.216 \| good
2026-07-24T00:00:00.000Z	41 \| good	5.907 \| good	24.546 \| good	44.19 \| good	0.621 \| good	2.984 \| good	0.216 \| good
2026-07-24T01:00:00.000Z	32 \| good	1.581 \| good	6.736 \| good	35.355 \| good	0.67 \| good	3.503 \| good	0.158 \| good
2026-07-24T02:00:00.000Z	29 \| good	2.059 \| good	8.578 \| good	30.659 \| good	0.693 \| good	4.76 \| good	0.16 \| good
2026-07-24T03:00:00.000Z	24 \| good	3.423 \| good	14.582 \| good	26.171 \| good	0.712 \| good	5.051 \| good	0.154 \| good
2026-07-24T04:00:00.000Z	33 \| good	5.762 \| good	25.249 \| good	22.442 \| good	0.714 \| good	5.319 \| good	0.15 \| good
2026-07-24T05:00:00.000Z	27 \| good	5.085 \| good	22.064 \| good	19.112 \| good	0.696 \| good	5.553 \| good	0.149 \| good
2026-07-24T06:00:00.000Z	27 \| good	4.516 \| good	19.643 \| good	18.185 \| good	0.672 \| good	5.544 \| good	0.148 \| good
2026-07-24T07:00:00.000Z	22 \| good	3.984 \| good	17.735 \| good	16.845 \| good	0.654 \| good	5.621 \| good	0.149 \| good
2026-07-24T08:00:00.000Z	22 \| good	4.419 \| good	18.906 \| good	16.334 \| good	0.648 \| good	6.018 \| good	0.152 \| good
2026-07-24T09:00:00.000Z	33 \| good	5.617 \| good	24.166 \| good	14.689 \| good	0.659 \| good	6.713 \| good	0.158 \| good
2026-07-24T10:00:00.000Z	27 \| good	5.251 \| good	22.657 \| good	9.778 \| good	0.692 \| good	7.568 \| good	0.165 \| good
2026-07-24T11:00:00.000Z	38 \| good	7.106 \| good	31.473 \| good	9.813 \| good	0.75 \| good	8.427 \| good	0.173 \| good
2026-07-24T12:00:00.000Z	52 \| moderate	10.017 \| good	44.462 \| good	8.659 \| good	0.807 \| good	8.483 \| good	0.181 \| good
2026-07-24T13:00:00.000Z	62 \| moderate	15.087 \| fine	67.524 \| fine	7.299 \| good	0.904 \| good	7.916 \| good	0.189 \| good
2026-07-24T14:00:00.000Z	67 \| moderate	17.53 \| fine	77.438 \| fine	9.136 \| good	1.219 \| good	7.103 \| good	0.193 \| good
2026-07-24T15:00:00.000Z	71 \| moderate	19.992 \| fine	88.087 \| fine	11.978 \| good	1.629 \| good	5.975 \| good	0.194 \| good
2026-07-24T16:00:00.000Z	69 \| moderate	19.36 \| fine	85.829 \| fine	11.932 \| good	2.004 \| good	4.862 \| good	0.19 \| good
2026-07-24T17:00:00.000Z	67 \| moderate	18.035 \| fine	79.625 \| fine	15.228 \| good	2.291 \| good	3.719 \| good	0.186 \| good
2026-07-24T18:00:00.000Z	56 \| moderate	12.136 \| fine	54.894 \| good	21.502 \| good	2.521 \| good	2.859 \| good	0.184 \| good
2026-07-24T19:00:00.000Z	54 \| moderate	11.206 \| good	49.807 \| good	23.77 \| good	2.632 \| good	2.597 \| good	0.185 \| good
2026-07-24T20:00:00.000Z	54 \| moderate	10.592 \| good	47.196 \| good	26.959 \| good	2.527 \| good	2.98 \| good	0.189 \| good
2026-07-24T21:00:00.000Z	54 \| moderate	10.913 \| good	48.065 \| good	34.677 \| good	2.187 \| good	3.931 \| good	0.2 \| good
2026-07-24T22:00:00.000Z	54 \| moderate	10.609 \| good	47.2 \| good	38.88 \| good	1.926 \| good	5.169 \| good	0.21 \| good
2026-07-24T23:00:00.000Z	56 \| moderate	12.408 \| fine	55.525 \| fine	39.718 \| good	1.782 \| good	6.208 \| good	0.216 \| good
2026-07-25T00:00:00.000Z	56 \| moderate	11.811 \| good	52.277 \| good	37.522 \| good	1.56 \| good	6.68 \| good	0.218 \| good
2026-07-25T01:00:00.000Z	52 \| moderate	9.551 \| good	42.628 \| good	39.963 \| good	1.369 \| good	6.774 \| good	0.213 \| good
2026-07-25T02:00:00.000Z	44 \| good	7.628 \| good	33.544 \| good	36.015 \| good	1.206 \| good	6.533 \| good	0.208 \| good
2026-07-25T03:00:00.000Z	38 \| good	6.951 \| good	30.694 \| good	30.437 \| good	1.081 \| good	6.107 \| good	0.203 \| good
2026-07-25T04:00:00.000Z	44 \| good	7.846 \| good	34.528 \| good	26.393 \| good	0.969 \| good	5.779 \| good	0.199 \| good
2026-07-25T05:00:00.000Z	33 \| good	6.089 \| good	27.063 \| good	22.626 \| good	0.919 \| good	5.29 \| good	0.195 \| good
2026-07-25T06:00:00.000Z	33 \| good	5.533 \| good	23.882 \| good	22.019 \| good	0.918 \| good	4.77 \| good	0.192 \| good
2026-07-25T07:00:00.000Z	22 \| good	4.001 \| good	17.313 \| good	21.347 \| good	0.933 \| good	4.23 \| good	0.188 \| good
2026-07-25T08:00:00.000Z	22 \| good	3.89 \| good	16.89 \| good	22.144 \| good	0.967 \| good	3.837 \| good	0.185 \| good
2026-07-25T09:00:00.000Z	22 \| good	3.852 \| good	16.856 \| good	22.303 \| good	1.013 \| good	3.473 \| good	0.182 \| good
2026-07-25T10:00:00.000Z	27 \| good	4.753 \| good	20.564 \| good	23.514 \| good	1.036 \| good	3.17 \| good	0.181 \| good
2026-07-25T11:00:00.000Z	27 \| good	4.918 \| good	21.173 \| good	23.638 \| good	0.911 \| good	2.974 \| good	0.182 \| good
2026-07-25T12:00:00.000Z	33 \| good	6.161 \| good	27.481 \| good	25.889 \| good	0.746 \| good	2.978 \| good	0.186 \| good
2026-07-25T13:00:00.000Z	44 \| good	7.938 \| good	34.928 \| good	30.921 \| good	0.591 \| good	3.547 \| good	0.196 \| good
2026-07-25T14:00:00.000Z	52 \| moderate	10.364 \| good	46.183 \| good	34.785 \| good	0.599 \| good	2.988 \| good	0.202 \| good
2026-07-25T15:00:00.000Z	54 \| moderate	11.031 \| good	48.823 \| good	38.761 \| good	0.576 \| good	1.601 \| good	0.198 \| good
2026-07-25T16:00:00.000Z	56 \| moderate	11.986 \| good	53.486 \| good	36.987 \| good	0.545 \| good	1.224 \| good	0.193 \| good
2026-07-25T17:00:00.000Z	60 \| moderate	14.469 \| fine	64.965 \| fine	44.194 \| good	0.542 \| good	1.097 \| good	0.187 \| good
2026-07-25T18:00:00.000Z	58 \| moderate	12.646 \| fine	56.314 \| fine	46.594 \| good	0.637 \| good	1.206 \| good	0.187 \| good
2026-07-25T19:00:00.000Z	56 \| moderate	11.581 \| good	51.317 \| good	42.667 \| good	0.808 \| good	0.977 \| good	0.185 \| good
2026-07-25T20:00:00.000Z	58 \| moderate	12.925 \| fine	58.536 \| fine	40.57 \| good	0.876 \| good	0.846 \| good	0.181 \| good
2026-07-25T21:00:00.000Z	58 \| moderate	13.076 \| fine	58.614 \| fine	40.743 \| good	0.852 \| good	0.867 \| good	0.18 \| good
2026-07-25T22:00:00.000Z	56 \| moderate	12.489 \| fine	56.555 \| fine	40.487 \| good	0.735 \| good	0.939 \| good	0.181 \| good
2026-07-25T23:00:00.000Z	60 \| moderate	13.551 \| fine	61.072 \| fine	37.839 \| good	0.588 \| good	1.14 \| good	0.183 \| good
2026-07-26T00:00:00.000Z	42 \| good	6.791 \| good	6.997 \| good	44.786 \| good	0.444 \| good	2.088 \| good	0.193 \| good

O'Fallon

Empower business decisions with accurate air quality data

O'Fallon, Missouri air quality map: Real-time AQI near you

0.21ppm

How accurate is Missouri, USA air quality data?

Air quality measurements for Missouri, 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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Frequently asked questions

How frequently is the air quality data for O'fallon, Missouri updated?

Air quality data for O'fallon, Missouri is updated on an hourly basis.

When did O'fallon, Missouri experience the worst air quality in the last 24 hours?

The worst air quality in O'fallon, Missouri was recorded at 12:00:00 on 2026-07-23.

When did O'fallon, Missouri have its best air quality in the last 24 hours?

The best air quality in O'fallon, Missouri was recorded at 11:00:00 on 2026-07-23.

What is the real-time air quality index for O'fallon, Missouri?

The real-time air quality index in O'fallon, Missouri is 41, currently categorized as Good.

Which pollutant is found most often in O'fallon, Missouri?

The most common pollutant in O'fallon, Missouri is O3.

What can I do if the air quality in O'fallon, Missouri is poor?

If the air quality in O'fallon, Missouri is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in O'fallon, Missouri?

The measured PM_2.5 levels in O'fallon, Missouri at present are 5.907 μg/m³.

What are the current PM₁₀ levels at O'fallon, Missouri?

The current PM₁₀ levels in O'fallon, Missouri are 24.546 μg/m³.

What are the current carbon monoxide (CO) levels at O'fallon, Missouri?

The current carbon monoxide (CO) level in O'fallon, Missouri is 0.216 ppm.

What are the current sulfur dioxide (SO₂) levels at O'fallon, Missouri?

The current sulfur dioxide (SO₂) levels in O'fallon, Missouri are 0.621 ppb.

What are the current ozone (O₃) levels at O'fallon, Missouri?

The current ozone (O₃) levels at O'fallon, Missouri is 44.19 ppm.

What are the current nitrogen dioxide (NO₂) levels at O'fallon, Missouri?

The current nitrogen dioxide (NO₂) levels at O'fallon, Missouri is 2.984 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-22T01:00:00.000Z	56 \| moderate	12.186 \| fine	46.243 \| good	44.152 \| good	0.674 \| good	1.88 \| good	0.21 \| good
2026-07-22T02:00:00.000Z	60 \| moderate	13.635 \| fine	56.585 \| fine	41.147 \| good	0.578 \| good	2.063 \| good	0.21 \| good
2026-07-22T03:00:00.000Z	56 \| moderate	11.671 \| good	40.316 \| good	39.299 \| good	0.54 \| good	2.122 \| good	0.21 \| good
2026-07-22T04:00:00.000Z	52 \| moderate	10.051 \| good	51.147 \| good	37.268 \| good	0.597 \| good	3.601 \| good	0.21 \| good
2026-07-22T05:00:00.000Z	52 \| moderate	9.983 \| good	52.287 \| good	36.344 \| good	0.523 \| good	2.241 \| good	0.21 \| good
2026-07-22T06:00:00.000Z	48 \| good	8.459 \| good	51.852 \| good	36.453 \| good	0.541 \| good	2.215 \| good	0.21 \| good
2026-07-22T07:00:00.000Z	54 \| moderate	11.485 \| good	33.871 \| good	34.822 \| good	0.537 \| good	2.199 \| good	0.205 \| good
2026-07-22T08:00:00.000Z	52 \| moderate	9.65 \| good	41.675 \| good	33.832 \| good	0.542 \| good	2.194 \| good	0.205 \| good
2026-07-22T09:00:00.000Z	52 \| moderate	10.266 \| good	49.295 \| good	33.754 \| good	0.359 \| good	1.79 \| good	0.217 \| good
2026-07-22T10:00:00.000Z	56 \| moderate	11.933 \| good	61.613 \| fine	28.583 \| good	0.582 \| good	3.616 \| good	0.205 \| good
2026-07-22T11:00:00.000Z	56 \| moderate	11.904 \| good	44.253 \| good	30.994 \| good	0.54 \| good	4.092 \| good	0.205 \| good
2026-07-22T12:00:00.000Z	56 \| moderate	11.558 \| good	54.809 \| good	27.733 \| good	0.488 \| good	5.307 \| good	0.198 \| good
2026-07-22T13:00:00.000Z	56 \| moderate	12.374 \| fine	58.618 \| fine	28.93 \| good	0.537 \| good	4.585 \| good	0.204 \| good
2026-07-22T14:00:00.000Z	54 \| moderate	10.662 \| good	54.954 \| good	29.166 \| good	0.741 \| good	4.498 \| good	0.198 \| good
2026-07-22T15:00:00.000Z	50 \| good	9.47 \| good	54.116 \| good	28.774 \| good	1.191 \| good	4.517 \| good	0.233 \| good
2026-07-22T16:00:00.000Z	49 \| good	8.745 \| good	49.442 \| good	28.68 \| good	0.951 \| good	3.559 \| good	0.198 \| good
2026-07-22T17:00:00.000Z	35 \| good	6.118 \| good	38.255 \| good	29.749 \| good	0.55 \| good	3.139 \| good	0.198 \| good
2026-07-22T18:00:00.000Z	38 \| good	6.643 \| good	30.145 \| good	32.715 \| good	0.505 \| good	2.587 \| good	0.198 \| good
2026-07-22T19:00:00.000Z	44 \| good	5.966 \| good	47.554 \| good	33.339 \| good	0.661 \| good	1.776 \| good	0.198 \| good
2026-07-22T20:00:00.000Z	33 \| good	5.792 \| good	32.778 \| good	33.407 \| good	0.725 \| good	2.216 \| good	0.198 \| good
2026-07-22T21:00:00.000Z	38 \| good	6.667 \| good	28.996 \| good	37.283 \| good	0.661 \| good	2.263 \| good	0.198 \| good
2026-07-22T22:00:00.000Z	49 \| good	9.382 \| good	35.099 \| good	37.037 \| good	0.597 \| good	2.441 \| good	0.198 \| good
2026-07-22T23:00:00.000Z	44 \| good	8.476 \| good	22.905 \| good	37.405 \| good	0.659 \| good	3.12 \| good	0.198 \| good
2026-07-23T00:00:00.000Z	44 \| good	7.999 \| good	31.057 \| good	37.225 \| good	0.698 \| good	3.341 \| good	0.198 \| good
2026-07-23T01:00:00.000Z	35 \| good	6.473 \| good	21.401 \| good	37.872 \| good	0.672 \| good	3.361 \| good	0.198 \| good
2026-07-23T02:00:00.000Z	33 \| good	5.781 \| good	26.045 \| good	34.599 \| good	0.538 \| good	3.48 \| good	0.205 \| good
2026-07-23T03:00:00.000Z	28 \| good	1.971 \| good	7.865 \| good	29.859 \| good	0.541 \| good	3.632 \| good	0.209 \| good
2026-07-23T04:00:00.000Z	33 \| good	6.417 \| good	24.027 \| good	31.775 \| good	0.545 \| good	4.203 \| good	0.211 \| good
2026-07-23T05:00:00.000Z	33 \| good	5.868 \| good	21.932 \| good	28.677 \| good	0.538 \| good	5.515 \| good	0.205 \| good
2026-07-23T06:00:00.000Z	33 \| good	6.132 \| good	22.281 \| good	28.909 \| good	0.909 \| good	6.311 \| good	0.205 \| good
2026-07-23T07:00:00.000Z	33 \| good	6.283 \| good	24.661 \| good	28.399 \| good	0.897 \| good	6.373 \| good	0.205 \| good
2026-07-23T08:00:00.000Z	33 \| good	6.482 \| good	25.615 \| good	27.117 \| good	0.897 \| good	6.404 \| good	0.199 \| good
2026-07-23T09:00:00.000Z	27 \| good	5.073 \| good	18.545 \| good	19.557 \| good	0.742 \| good	5.912 \| good	0.199 \| good
2026-07-23T10:00:00.000Z	22 \| good	4.066 \| good	16.342 \| good	23.082 \| good	0.518 \| good	6.241 \| good	0.199 \| good
2026-07-23T11:00:00.000Z	20 \| good	3.361 \| good	13.391 \| good	22.059 \| good	0.63 \| good	6.699 \| good	0.154 \| good
2026-07-23T12:00:00.000Z	30 \| good	5.079 \| good	32.184 \| good	16.308 \| good	0.668 \| good	8.613 \| good	0.205 \| good
2026-07-23T13:00:00.000Z	33 \| good	5.66 \| good	24.519 \| good	18.829 \| good	0.901 \| good	8.674 \| good	0.249 \| good
2026-07-23T14:00:00.000Z	27 \| good	5.392 \| good	17.916 \| good	23.378 \| good	0.724 \| good	7.941 \| good	0.263 \| good
2026-07-23T15:00:00.000Z	27 \| good	4.619 \| good	14.919 \| good	27.088 \| good	0.747 \| good	7.251 \| good	0.222 \| good
2026-07-23T16:00:00.000Z	28 \| good	3.66 \| good	14.37 \| good	30.404 \| good	0.736 \| good	6.436 \| good	0.211 \| good
2026-07-23T17:00:00.000Z	31 \| good	4.62 \| good	31.407 \| good	33.507 \| good	1.144 \| good	3.075 \| good	0.208 \| good
2026-07-23T18:00:00.000Z	35 \| good	4.411 \| good	16.934 \| good	38.081 \| good	1.134 \| good	2.778 \| good	0.216 \| good
2026-07-23T19:00:00.000Z	37 \| good	6.475 \| good	30.017 \| good	39.687 \| good	0.915 \| good	2.96 \| good	0.216 \| good
2026-07-23T20:00:00.000Z	39 \| good	5.759 \| good	24.231 \| good	41.721 \| good	0.767 \| good	2.61 \| good	0.211 \| good
2026-07-23T21:00:00.000Z	39 \| good	4.549 \| good	18.478 \| good	41.653 \| good	0.966 \| good	2.581 \| good	0.211 \| good
2026-07-23T22:00:00.000Z	41 \| good	5.045 \| good	23.856 \| good	43.553 \| good	0.862 \| good	2.99 \| good	0.204 \| good
2026-07-23T23:00:00.000Z	41 \| good	5.907 \| good	24.546 \| good	44.19 \| good	0.621 \| good	2.984 \| good	0.216 \| good
2026-07-24T00:00:00.000Z	40 \| good	5.765 \| good	21.215 \| good	43.075 \| good	0.508 \| good	2.827 \| good	0.216 \| good
2026-07-24T00:00:00.000Z	41 \| good	5.907 \| good	24.546 \| good	44.19 \| good	0.621 \| good	2.984 \| good	0.216 \| good
2026-07-24T01:00:00.000Z	32 \| good	1.581 \| good	6.736 \| good	35.355 \| good	0.67 \| good	3.503 \| good	0.158 \| good
2026-07-24T02:00:00.000Z	29 \| good	2.059 \| good	8.578 \| good	30.659 \| good	0.693 \| good	4.76 \| good	0.16 \| good
2026-07-24T03:00:00.000Z	24 \| good	3.423 \| good	14.582 \| good	26.171 \| good	0.712 \| good	5.051 \| good	0.154 \| good
2026-07-24T04:00:00.000Z	33 \| good	5.762 \| good	25.249 \| good	22.442 \| good	0.714 \| good	5.319 \| good	0.15 \| good
2026-07-24T05:00:00.000Z	27 \| good	5.085 \| good	22.064 \| good	19.112 \| good	0.696 \| good	5.553 \| good	0.149 \| good
2026-07-24T06:00:00.000Z	27 \| good	4.516 \| good	19.643 \| good	18.185 \| good	0.672 \| good	5.544 \| good	0.148 \| good
2026-07-24T07:00:00.000Z	22 \| good	3.984 \| good	17.735 \| good	16.845 \| good	0.654 \| good	5.621 \| good	0.149 \| good
2026-07-24T08:00:00.000Z	22 \| good	4.419 \| good	18.906 \| good	16.334 \| good	0.648 \| good	6.018 \| good	0.152 \| good
2026-07-24T09:00:00.000Z	33 \| good	5.617 \| good	24.166 \| good	14.689 \| good	0.659 \| good	6.713 \| good	0.158 \| good
2026-07-24T10:00:00.000Z	27 \| good	5.251 \| good	22.657 \| good	9.778 \| good	0.692 \| good	7.568 \| good	0.165 \| good
2026-07-24T11:00:00.000Z	38 \| good	7.106 \| good	31.473 \| good	9.813 \| good	0.75 \| good	8.427 \| good	0.173 \| good
2026-07-24T12:00:00.000Z	52 \| moderate	10.017 \| good	44.462 \| good	8.659 \| good	0.807 \| good	8.483 \| good	0.181 \| good
2026-07-24T13:00:00.000Z	62 \| moderate	15.087 \| fine	67.524 \| fine	7.299 \| good	0.904 \| good	7.916 \| good	0.189 \| good
2026-07-24T14:00:00.000Z	67 \| moderate	17.53 \| fine	77.438 \| fine	9.136 \| good	1.219 \| good	7.103 \| good	0.193 \| good
2026-07-24T15:00:00.000Z	71 \| moderate	19.992 \| fine	88.087 \| fine	11.978 \| good	1.629 \| good	5.975 \| good	0.194 \| good
2026-07-24T16:00:00.000Z	69 \| moderate	19.36 \| fine	85.829 \| fine	11.932 \| good	2.004 \| good	4.862 \| good	0.19 \| good
2026-07-24T17:00:00.000Z	67 \| moderate	18.035 \| fine	79.625 \| fine	15.228 \| good	2.291 \| good	3.719 \| good	0.186 \| good
2026-07-24T18:00:00.000Z	56 \| moderate	12.136 \| fine	54.894 \| good	21.502 \| good	2.521 \| good	2.859 \| good	0.184 \| good
2026-07-24T19:00:00.000Z	54 \| moderate	11.206 \| good	49.807 \| good	23.77 \| good	2.632 \| good	2.597 \| good	0.185 \| good
2026-07-24T20:00:00.000Z	54 \| moderate	10.592 \| good	47.196 \| good	26.959 \| good	2.527 \| good	2.98 \| good	0.189 \| good
2026-07-24T21:00:00.000Z	54 \| moderate	10.913 \| good	48.065 \| good	34.677 \| good	2.187 \| good	3.931 \| good	0.2 \| good
2026-07-24T22:00:00.000Z	54 \| moderate	10.609 \| good	47.2 \| good	38.88 \| good	1.926 \| good	5.169 \| good	0.21 \| good
2026-07-24T23:00:00.000Z	56 \| moderate	12.408 \| fine	55.525 \| fine	39.718 \| good	1.782 \| good	6.208 \| good	0.216 \| good
2026-07-25T00:00:00.000Z	56 \| moderate	11.811 \| good	52.277 \| good	37.522 \| good	1.56 \| good	6.68 \| good	0.218 \| good
2026-07-25T01:00:00.000Z	52 \| moderate	9.551 \| good	42.628 \| good	39.963 \| good	1.369 \| good	6.774 \| good	0.213 \| good
2026-07-25T02:00:00.000Z	44 \| good	7.628 \| good	33.544 \| good	36.015 \| good	1.206 \| good	6.533 \| good	0.208 \| good
2026-07-25T03:00:00.000Z	38 \| good	6.951 \| good	30.694 \| good	30.437 \| good	1.081 \| good	6.107 \| good	0.203 \| good
2026-07-25T04:00:00.000Z	44 \| good	7.846 \| good	34.528 \| good	26.393 \| good	0.969 \| good	5.779 \| good	0.199 \| good
2026-07-25T05:00:00.000Z	33 \| good	6.089 \| good	27.063 \| good	22.626 \| good	0.919 \| good	5.29 \| good	0.195 \| good
2026-07-25T06:00:00.000Z	33 \| good	5.533 \| good	23.882 \| good	22.019 \| good	0.918 \| good	4.77 \| good	0.192 \| good
2026-07-25T07:00:00.000Z	22 \| good	4.001 \| good	17.313 \| good	21.347 \| good	0.933 \| good	4.23 \| good	0.188 \| good
2026-07-25T08:00:00.000Z	22 \| good	3.89 \| good	16.89 \| good	22.144 \| good	0.967 \| good	3.837 \| good	0.185 \| good
2026-07-25T09:00:00.000Z	22 \| good	3.852 \| good	16.856 \| good	22.303 \| good	1.013 \| good	3.473 \| good	0.182 \| good
2026-07-25T10:00:00.000Z	27 \| good	4.753 \| good	20.564 \| good	23.514 \| good	1.036 \| good	3.17 \| good	0.181 \| good
2026-07-25T11:00:00.000Z	27 \| good	4.918 \| good	21.173 \| good	23.638 \| good	0.911 \| good	2.974 \| good	0.182 \| good
2026-07-25T12:00:00.000Z	33 \| good	6.161 \| good	27.481 \| good	25.889 \| good	0.746 \| good	2.978 \| good	0.186 \| good
2026-07-25T13:00:00.000Z	44 \| good	7.938 \| good	34.928 \| good	30.921 \| good	0.591 \| good	3.547 \| good	0.196 \| good
2026-07-25T14:00:00.000Z	52 \| moderate	10.364 \| good	46.183 \| good	34.785 \| good	0.599 \| good	2.988 \| good	0.202 \| good
2026-07-25T15:00:00.000Z	54 \| moderate	11.031 \| good	48.823 \| good	38.761 \| good	0.576 \| good	1.601 \| good	0.198 \| good
2026-07-25T16:00:00.000Z	56 \| moderate	11.986 \| good	53.486 \| good	36.987 \| good	0.545 \| good	1.224 \| good	0.193 \| good
2026-07-25T17:00:00.000Z	60 \| moderate	14.469 \| fine	64.965 \| fine	44.194 \| good	0.542 \| good	1.097 \| good	0.187 \| good
2026-07-25T18:00:00.000Z	58 \| moderate	12.646 \| fine	56.314 \| fine	46.594 \| good	0.637 \| good	1.206 \| good	0.187 \| good
2026-07-25T19:00:00.000Z	56 \| moderate	11.581 \| good	51.317 \| good	42.667 \| good	0.808 \| good	0.977 \| good	0.185 \| good
2026-07-25T20:00:00.000Z	58 \| moderate	12.925 \| fine	58.536 \| fine	40.57 \| good	0.876 \| good	0.846 \| good	0.181 \| good
2026-07-25T21:00:00.000Z	58 \| moderate	13.076 \| fine	58.614 \| fine	40.743 \| good	0.852 \| good	0.867 \| good	0.18 \| good
2026-07-25T22:00:00.000Z	56 \| moderate	12.489 \| fine	56.555 \| fine	40.487 \| good	0.735 \| good	0.939 \| good	0.181 \| good
2026-07-25T23:00:00.000Z	60 \| moderate	13.551 \| fine	61.072 \| fine	37.839 \| good	0.588 \| good	1.14 \| good	0.183 \| good
2026-07-26T00:00:00.000Z	42 \| good	6.791 \| good	6.997 \| good	44.786 \| good	0.444 \| good	2.088 \| good	0.193 \| good

Real-time air quality index in O'Fallon, Missouri today

Common air pollutants in O'Fallon, Missouri

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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

Empower business decisions with accurate air quality data

O'Fallon, Missouri air quality map: Real-time AQI near you

Air quality in nearby cities

O'Fallon, Missouri

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Air quality levels in US

Frequently asked questions

How frequently is the air quality data for O'fallon, Missouri updated?

When did O'fallon, Missouri experience the worst air quality in the last 24 hours?

When did O'fallon, Missouri have its best air quality in the last 24 hours?

What is the real-time air quality index for O'fallon, Missouri?

Which pollutant is found most often in O'fallon, Missouri?

What can I do if the air quality in O'fallon, Missouri is poor?

What are the current PM2.5 levels in O'fallon, Missouri?

What are the current PM10 levels at O'fallon, Missouri?

What are the current carbon monoxide (CO) levels at O'fallon, Missouri?

What are the current sulfur dioxide (SO2) levels at O'fallon, Missouri?

What are the current ozone (O3) levels at O'fallon, Missouri?

What are the current nitrogen dioxide (NO2) levels at O'fallon, Missouri?

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 O'fallon, Missouri?

What are the current PM₁₀ levels at O'fallon, Missouri?

What are the current sulfur dioxide (SO₂) levels at O'fallon, Missouri?

What are the current ozone (O₃) levels at O'fallon, Missouri?

What are the current nitrogen dioxide (NO₂) levels at O'fallon, Missouri?