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

The current PM10 levels in O'fallon, Missouri are 28.164 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 0.577 ppb.

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

The current ozone (O3) levels at O'fallon, Missouri is 7.821 ppm.

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

The current nitrogen dioxide (NO2) levels at O'fallon, Missouri is 14.66 ppb.

Live air quality index in O'Fallon, Missouri today

Name: Live air pollution levels in O'Fallon, Missouri today
Creator: Ambee

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)

Major air pollutants in O'Fallon, Missouri

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.45 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

28.16 μg/m³

155

255

425

605+

Ozone (O₃)

7.82 ppb

201

201+

Sulfur Dioxide (SO₂)

0.58 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

14.66 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.41 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
2025-06-04T11:00:00.000Z	35 \| good	2.636 \| good	10.71 \| good	37.905 \| good	0.392 \| good	9.153 \| good	0.209 \| good
2025-06-04T12:00:00.000Z	37 \| good	2.304 \| good	30.157 \| good	40.344 \| good	0.668 \| good	12.243 \| good	0.278 \| good
2025-06-04T13:00:00.000Z	35 \| good	6.21 \| good	27.439 \| good	38.036 \| good	0.23 \| good	1.731 \| good	0.19 \| good
2025-06-04T14:00:00.000Z	33 \| good	4.881 \| good	27.844 \| good	36.01 \| good	0.615 \| good	17.183 \| good	0.355 \| good
2025-06-04T15:00:00.000Z	41 \| good	3.522 \| good	22.484 \| good	43.903 \| good	0.688 \| good	12.712 \| good	0.354 \| good
2025-06-04T16:00:00.000Z	31 \| good	2.973 \| good	31.1 \| good	33.653 \| good	0.442 \| good	10.394 \| good	0.329 \| good
2025-06-04T17:00:00.000Z	44 \| good	7.621 \| good	34.903 \| good	31.179 \| good	0.473 \| good	7.201 \| good	0.322 \| good
2025-06-04T18:00:00.000Z	28 \| good	4.746 \| good	13.076 \| good	29.944 \| good	0.573 \| good	5.158 \| good	0.29 \| good
2025-06-04T19:00:00.000Z	44 \| good	8.341 \| good	30.278 \| good	34.114 \| good	0.538 \| good	5.006 \| good	0.301 \| good
2025-06-04T20:00:00.000Z	60 \| moderate	13.873 \| fine	44.63 \| good	39.381 \| good	0.569 \| good	6.26 \| good	0.316 \| good
2025-06-04T21:00:00.000Z	60 \| moderate	14.446 \| fine	55.06 \| fine	35.909 \| good	0.457 \| good	5.968 \| good	0.277 \| good
2025-06-04T22:00:00.000Z	44 \| good	8.181 \| good	42.267 \| good	36.438 \| good	0.596 \| good	7.032 \| good	0.197 \| good
2025-06-04T23:00:00.000Z	33 \| good	5.708 \| good	31.965 \| good	32.411 \| good	0.56 \| good	4.58 \| good	0.277 \| good
2025-06-05T00:00:00.000Z	42 \| good	5.727 \| good	44.59 \| good	30.493 \| good	0.622 \| good	2.306 \| good	0.254 \| good
2025-06-05T01:00:00.000Z	33 \| good	6.051 \| good	36.244 \| good	31.921 \| good	0.596 \| good	4.983 \| good	0.298 \| good
2025-06-05T02:00:00.000Z	60 \| moderate	14.366 \| fine	51.527 \| good	32.867 \| good	0.557 \| good	4.69 \| good	0.261 \| good
2025-06-05T03:00:00.000Z	67 \| moderate	18.073 \| fine	51.068 \| good	33.958 \| good	0.624 \| good	3.96 \| good	0.26 \| good
2025-06-05T04:00:00.000Z	75 \| moderate	14.126 \| fine	103.191 \| fine	32.749 \| good	0.646 \| good	4.279 \| good	0.246 \| good
2025-06-05T05:00:00.000Z	38 \| good	7.367 \| good	39.164 \| good	27.555 \| good	0.643 \| good	5.08 \| good	0.282 \| good
2025-06-05T06:00:00.000Z	69 \| moderate	4.731 \| good	91.68 \| fine	24.204 \| good	0.714 \| good	5.63 \| good	0.282 \| good
2025-06-05T07:00:00.000Z	65 \| moderate	4.803 \| good	83.318 \| fine	23.256 \| good	0.707 \| good	5.817 \| good	0.282 \| good
2025-06-05T08:00:00.000Z	34 \| good	3.431 \| good	36.812 \| good	24.525 \| good	0.709 \| good	6.279 \| good	0.289 \| good
2025-06-05T09:00:00.000Z	21 \| good	2.526 \| good	16.256 \| good	23.129 \| good	0.672 \| good	3.114 \| good	0.539 \| good
2025-06-05T10:00:00.000Z	36 \| good	2.607 \| good	39.14 \| good	28.084 \| good	0.632 \| good	3.181 \| good	0.407 \| good
2025-06-05T11:00:00.000Z	66 \| moderate	3.259 \| good	85.245 \| fine	30.764 \| good	0.638 \| good	2.617 \| good	0.314 \| good
2025-06-05T12:00:00.000Z	100 \| moderate	14.284 \| fine	153.292 \| fine	23.748 \| good	0.643 \| good	3.329 \| good	0.312 \| good
2025-06-05T13:00:00.000Z	64 \| moderate	9.498 \| good	80.876 \| fine	27.615 \| good	0.679 \| good	3.856 \| good	0.312 \| good
2025-06-05T14:00:00.000Z	108 \| sensitive	16.367 \| fine	168.771 \| moderate	33.872 \| good	0.635 \| good	3.342 \| good	0.312 \| good
2025-06-05T15:00:00.000Z	64 \| moderate	16.15 \| fine	82.146 \| fine	35.113 \| good	0.556 \| good	4.226 \| good	0.284 \| good
2025-06-05T16:00:00.000Z	94 \| moderate	21.513 \| fine	141.201 \| fine	33.478 \| good	0.589 \| good	3.553 \| good	0.279 \| good
2025-06-05T17:00:00.000Z	79 \| moderate	17.936 \| fine	110.914 \| fine	37.132 \| good	0.57 \| good	3.668 \| good	0.32 \| good
2025-06-05T18:00:00.000Z	66 \| moderate	6.424 \| good	84.89 \| fine	36.487 \| good	0.353 \| good	3.549 \| good	0.314 \| good
2025-06-05T19:00:00.000Z	38 \| good	5.63 \| good	41.014 \| good	36.214 \| good	0.573 \| good	3.86 \| good	0.272 \| good
2025-06-05T20:00:00.000Z	75 \| moderate	14.059 \| fine	104.45 \| fine	39.324 \| good	0.544 \| good	4.689 \| good	0.265 \| good
2025-06-05T21:00:00.000Z	56 \| moderate	6.571 \| good	64.61 \| fine	41.525 \| good	0.551 \| good	3.562 \| good	0.258 \| good
2025-06-05T22:00:00.000Z	49 \| good	6.343 \| good	53.119 \| good	42.542 \| good	0.591 \| good	3.02 \| good	0.258 \| good
2025-06-05T23:00:00.000Z	44 \| good	7.597 \| good	29.551 \| good	38.905 \| good	0.669 \| good	3.827 \| good	0.206 \| good
2025-06-06T00:00:00.000Z	38 \| good	7.297 \| good	33.015 \| good	38.407 \| good	0.645 \| good	4.027 \| good	0.293 \| good
2025-06-06T01:00:00.000Z	49 \| good	8.562 \| good	29.61 \| good	36.711 \| good	0.702 \| good	1.783 \| good	0.257 \| good
2025-06-06T02:00:00.000Z	44 \| good	8.043 \| good	33.966 \| good	34.789 \| good	0.631 \| good	4.069 \| good	0.3 \| good
2025-06-06T03:00:00.000Z	49 \| good	9.363 \| good	31.067 \| good	21.106 \| good	0.602 \| good	5.154 \| good	0.347 \| good
2025-06-06T04:00:00.000Z	38 \| good	7.083 \| good	36.06 \| good	27.087 \| good	0.565 \| good	8.074 \| good	0.385 \| good
2025-06-06T05:00:00.000Z	49 \| good	9.311 \| good	44.035 \| good	23.072 \| good	0.524 \| good	9.272 \| good	0.472 \| good
2025-06-06T06:00:00.000Z	52 \| moderate	10.445 \| good	48.801 \| good	17.729 \| good	0.407 \| good	9.364 \| good	0.546 \| good
2025-06-06T07:00:00.000Z	52 \| moderate	9.613 \| good	48.209 \| good	16.41 \| good	0.415 \| good	16.42 \| good	0.546 \| good
2025-06-06T08:00:00.000Z	52 \| moderate	9.655 \| good	30.749 \| good	16.518 \| good	0.415 \| good	13.49 \| good	0.553 \| good
2025-06-06T09:00:00.000Z	52 \| moderate	9.826 \| good	35.882 \| good	14.005 \| good	0.642 \| good	6.536 \| good	0.438 \| good
2025-06-06T10:00:00.000Z	38 \| good	7.449 \| good	28.164 \| good	7.821 \| good	0.577 \| good	14.66 \| good	0.408 \| good
2025-06-06T10:00:00.000Z	38 \| good	7.449 \| good	28.164 \| good	7.821 \| good	0.577 \| good	14.66 \| good	0.408 \| good
2025-06-06T11:00:00.000Z	62 \| moderate	15.384 \| fine	68.244 \| fine	17.602 \| good	0.461 \| good	5.964 \| good	0.292 \| good
2025-06-06T12:00:00.000Z	69 \| moderate	19.005 \| fine	83.633 \| fine	13.25 \| good	0.507 \| good	5.835 \| good	0.29 \| good
2025-06-06T13:00:00.000Z	71 \| moderate	19.611 \| fine	86.411 \| fine	19.001 \| good	0.751 \| good	1.646 \| good	0.238 \| good
2025-06-06T14:00:00.000Z	77 \| moderate	22.533 \| fine	98.453 \| fine	24.154 \| good	0.864 \| good	1.789 \| good	0.242 \| good
2025-06-06T15:00:00.000Z	84 \| moderate	26.951 \| fine	116.982 \| fine	23.98 \| good	0.977 \| good	1.931 \| good	0.247 \| good
2025-06-06T16:00:00.000Z	81 \| moderate	25.3 \| fine	110.306 \| fine	28.849 \| good	0.54 \| good	0.914 \| good	0.203 \| good
2025-06-06T17:00:00.000Z	77 \| moderate	23.104 \| fine	100.85 \| fine	30.002 \| good	0.625 \| good	1.047 \| good	0.204 \| good
2025-06-06T18:00:00.000Z	79 \| moderate	23.746 \| fine	103.546 \| fine	32.333 \| good	0.711 \| good	1.18 \| good	0.205 \| good
2025-06-06T19:00:00.000Z	77 \| moderate	22.906 \| fine	100.33 \| fine	32.504 \| good	0.642 \| good	1.236 \| good	0.196 \| good
2025-06-06T20:00:00.000Z	79 \| moderate	23.986 \| fine	104.867 \| fine	31.593 \| good	0.777 \| good	1.451 \| good	0.197 \| good
2025-06-06T21:00:00.000Z	75 \| moderate	21.595 \| fine	94.232 \| fine	29.454 \| good	0.912 \| good	1.667 \| good	0.199 \| good
2025-06-06T22:00:00.000Z	60 \| moderate	13.947 \| fine	62.94 \| fine	40.097 \| good	0.606 \| good	3.152 \| good	0.218 \| good
2025-06-06T23:00:00.000Z	52 \| moderate	10.066 \| good	44.688 \| good	41.452 \| good	0.679 \| good	3.9 \| good	0.224 \| good
2025-06-07T00:00:00.000Z	67 \| moderate	17.661 \| fine	77.939 \| fine	45.626 \| good	0.753 \| good	4.647 \| good	0.23 \| good
2025-06-07T01:00:00.000Z	66 \| moderate	17.363 \| fine	76.954 \| fine	35.887 \| good	0.7 \| good	10.454 \| good	0.295 \| good
2025-06-07T02:00:00.000Z	75 \| moderate	21.776 \| fine	95.864 \| fine	32.056 \| good	0.813 \| good	11.995 \| good	0.307 \| good
2025-06-07T03:00:00.000Z	84 \| moderate	26.969 \| fine	117.285 \| fine	28.346 \| good	0.926 \| good	13.537 \| good	0.32 \| good
2025-06-07T04:00:00.000Z	94 \| moderate	32.103 \| fine	138.804 \| fine	26.903 \| good	0.055 \| good	14.433 \| good	0.353 \| good
2025-06-07T05:00:00.000Z	102 \| sensitive	35.597 \| moderate	154.894 \| fine	25.259 \| good	0.072 \| good	16.198 \| good	0.372 \| good
2025-06-07T06:00:00.000Z	107 \| sensitive	37.697 \| moderate	165.681 \| moderate	23.899 \| good	0.089 \| good	17.963 \| good	0.392 \| good
2025-06-07T07:00:00.000Z	103 \| sensitive	36.41 \| moderate	158.536 \| moderate	20.027 \| good	0.057 \| good	8.129 \| good	0.301 \| good
2025-06-07T08:00:00.000Z	107 \| sensitive	37.708 \| moderate	165.417 \| moderate	19.257 \| good	0.071 \| good	7.864 \| good	0.3 \| good
2025-06-07T09:00:00.000Z	99 \| moderate	35.035 \| fine	151.595 \| fine	18.595 \| good	0.085 \| good	7.598 \| good	0.299 \| good
2025-06-07T10:00:00.000Z	90 \| moderate	29.911 \| fine	129.556 \| fine	20.672 \| good	0.035 \| good	4.613 \| good	0.271 \| good
2025-06-07T11:00:00.000Z	77 \| moderate	23.25 \| fine	102.087 \| fine	23.642 \| good	0.045 \| good	4.761 \| good	0.276 \| good
2025-06-07T12:00:00.000Z	66 \| moderate	16.674 \| fine	74.173 \| fine	25.162 \| good	0.055 \| good	4.91 \| good	0.28 \| good
2025-06-07T13:00:00.000Z	56 \| moderate	12.28 \| fine	55.226 \| fine	29.584 \| good	0.349 \| good	2.35 \| good	0.249 \| good
2025-06-07T14:00:00.000Z	58 \| moderate	13.09 \| fine	58.569 \| fine	30.398 \| good	0.418 \| good	2.609 \| good	0.255 \| good
2025-06-07T15:00:00.000Z	62 \| moderate	15.178 \| fine	68.214 \| fine	29.222 \| good	0.487 \| good	2.869 \| good	0.262 \| good
2025-06-07T16:00:00.000Z	66 \| moderate	16.545 \| fine	73.232 \| fine	30.315 \| good	0.869 \| good	1.674 \| good	0.215 \| good
2025-06-07T17:00:00.000Z	64 \| moderate	16.441 \| fine	72.943 \| fine	33.732 \| good	0.98 \| good	1.881 \| good	0.22 \| good
2025-06-07T18:00:00.000Z	71 \| moderate	19.685 \| fine	86.381 \| fine	38.784 \| good	1.092 \| good	2.088 \| good	0.225 \| good
2025-06-07T19:00:00.000Z	62 \| moderate	15.421 \| fine	68.8 \| fine	54.028 \| good	0.577 \| good	1.285 \| good	0.194 \| good
2025-06-07T20:00:00.000Z	45 \| good	7.629 \| good	33.739 \| good	48.7 \| good	0.742 \| good	1.476 \| good	0.199 \| good
2025-06-07T21:00:00.000Z	44 \| good	2.661 \| good	11.223 \| good	46.93 \| good	0.907 \| good	1.668 \| good	0.205 \| good
2025-06-07T22:00:00.000Z	43 \| good	0.564 \| good	2.1 \| good	45.677 \| good	0.179 \| good	2.3 \| good	0.172 \| good
2025-06-07T23:00:00.000Z	42 \| good	2.211 \| good	9.113 \| good	44.89 \| good	0.261 \| good	2.754 \| good	0.179 \| good
2025-06-08T00:00:00.000Z	41 \| good	4.759 \| good	20.675 \| good	44.29 \| good	0.343 \| good	3.207 \| good	0.187 \| good
2025-06-08T01:00:00.000Z	39 \| good	4.661 \| good	20.107 \| good	41.823 \| good	0.191 \| good	2.315 \| good	0.164 \| good
2025-06-08T02:00:00.000Z	38 \| good	5.392 \| good	23.319 \| good	41.429 \| good	0.268 \| good	2.829 \| good	0.168 \| good
2025-06-08T03:00:00.000Z	38 \| good	7.408 \| good	32.589 \| good	40.917 \| good	0.344 \| good	3.342 \| good	0.172 \| good
2025-06-08T04:00:00.000Z	52 \| moderate	10.054 \| good	44.425 \| good	38.415 \| good	0.254 \| good	1.927 \| good	0.195 \| good
2025-06-08T05:00:00.000Z	56 \| moderate	11.578 \| good	51.114 \| good	36.442 \| good	0.253 \| good	2.049 \| good	0.188 \| good
2025-06-08T06:00:00.000Z	28 \| good	3.68 \| good	3.717 \| good	30.134 \| good	0.243 \| good	2.117 \| good	0.182 \| good
2025-06-08T07:00:00.000Z	54 \| moderate	11.411 \| good	50.655 \| good	33.554 \| good	0.251 \| good	2.208 \| good	0.198 \| good
2025-06-08T08:00:00.000Z	56 \| moderate	11.566 \| good	50.958 \| good	31.072 \| good	0.26 \| good	2.346 \| good	0.198 \| good
2025-06-08T09:00:00.000Z	52 \| moderate	9.85 \| good	43.635 \| good	33.569 \| good	0.269 \| good	2.485 \| good	0.198 \| good
2025-06-08T10:00:00.000Z	44 \| good	8.421 \| good	36.99 \| good	32.679 \| good	0.442 \| good	1.871 \| good	0.197 \| good

O'Fallon

Empower business decisions with accurate air quality data

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

0.45ppm

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 02:00:00 on 2025-06-05.

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 10:00:00 on 2025-06-05.

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

The real-time air quality index in O'fallon, Missouri is 38, currently categorized as Good.

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

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

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 7.449 μg/m³.

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

The current PM₁₀ levels in O'fallon, Missouri are 28.164 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 0.408 ppm.

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

The current sulfur dioxide (SO₂) levels in O'fallon, Missouri are 0.577 ppb.

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

The current ozone (O₃) levels at O'fallon, Missouri is 7.821 ppm.

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

The current nitrogen dioxide (NO₂) levels at O'fallon, Missouri is 14.66 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T11:00:00.000Z	35 \| good	2.636 \| good	10.71 \| good	37.905 \| good	0.392 \| good	9.153 \| good	0.209 \| good
2025-06-04T12:00:00.000Z	37 \| good	2.304 \| good	30.157 \| good	40.344 \| good	0.668 \| good	12.243 \| good	0.278 \| good
2025-06-04T13:00:00.000Z	35 \| good	6.21 \| good	27.439 \| good	38.036 \| good	0.23 \| good	1.731 \| good	0.19 \| good
2025-06-04T14:00:00.000Z	33 \| good	4.881 \| good	27.844 \| good	36.01 \| good	0.615 \| good	17.183 \| good	0.355 \| good
2025-06-04T15:00:00.000Z	41 \| good	3.522 \| good	22.484 \| good	43.903 \| good	0.688 \| good	12.712 \| good	0.354 \| good
2025-06-04T16:00:00.000Z	31 \| good	2.973 \| good	31.1 \| good	33.653 \| good	0.442 \| good	10.394 \| good	0.329 \| good
2025-06-04T17:00:00.000Z	44 \| good	7.621 \| good	34.903 \| good	31.179 \| good	0.473 \| good	7.201 \| good	0.322 \| good
2025-06-04T18:00:00.000Z	28 \| good	4.746 \| good	13.076 \| good	29.944 \| good	0.573 \| good	5.158 \| good	0.29 \| good
2025-06-04T19:00:00.000Z	44 \| good	8.341 \| good	30.278 \| good	34.114 \| good	0.538 \| good	5.006 \| good	0.301 \| good
2025-06-04T20:00:00.000Z	60 \| moderate	13.873 \| fine	44.63 \| good	39.381 \| good	0.569 \| good	6.26 \| good	0.316 \| good
2025-06-04T21:00:00.000Z	60 \| moderate	14.446 \| fine	55.06 \| fine	35.909 \| good	0.457 \| good	5.968 \| good	0.277 \| good
2025-06-04T22:00:00.000Z	44 \| good	8.181 \| good	42.267 \| good	36.438 \| good	0.596 \| good	7.032 \| good	0.197 \| good
2025-06-04T23:00:00.000Z	33 \| good	5.708 \| good	31.965 \| good	32.411 \| good	0.56 \| good	4.58 \| good	0.277 \| good
2025-06-05T00:00:00.000Z	42 \| good	5.727 \| good	44.59 \| good	30.493 \| good	0.622 \| good	2.306 \| good	0.254 \| good
2025-06-05T01:00:00.000Z	33 \| good	6.051 \| good	36.244 \| good	31.921 \| good	0.596 \| good	4.983 \| good	0.298 \| good
2025-06-05T02:00:00.000Z	60 \| moderate	14.366 \| fine	51.527 \| good	32.867 \| good	0.557 \| good	4.69 \| good	0.261 \| good
2025-06-05T03:00:00.000Z	67 \| moderate	18.073 \| fine	51.068 \| good	33.958 \| good	0.624 \| good	3.96 \| good	0.26 \| good
2025-06-05T04:00:00.000Z	75 \| moderate	14.126 \| fine	103.191 \| fine	32.749 \| good	0.646 \| good	4.279 \| good	0.246 \| good
2025-06-05T05:00:00.000Z	38 \| good	7.367 \| good	39.164 \| good	27.555 \| good	0.643 \| good	5.08 \| good	0.282 \| good
2025-06-05T06:00:00.000Z	69 \| moderate	4.731 \| good	91.68 \| fine	24.204 \| good	0.714 \| good	5.63 \| good	0.282 \| good
2025-06-05T07:00:00.000Z	65 \| moderate	4.803 \| good	83.318 \| fine	23.256 \| good	0.707 \| good	5.817 \| good	0.282 \| good
2025-06-05T08:00:00.000Z	34 \| good	3.431 \| good	36.812 \| good	24.525 \| good	0.709 \| good	6.279 \| good	0.289 \| good
2025-06-05T09:00:00.000Z	21 \| good	2.526 \| good	16.256 \| good	23.129 \| good	0.672 \| good	3.114 \| good	0.539 \| good
2025-06-05T10:00:00.000Z	36 \| good	2.607 \| good	39.14 \| good	28.084 \| good	0.632 \| good	3.181 \| good	0.407 \| good
2025-06-05T11:00:00.000Z	66 \| moderate	3.259 \| good	85.245 \| fine	30.764 \| good	0.638 \| good	2.617 \| good	0.314 \| good
2025-06-05T12:00:00.000Z	100 \| moderate	14.284 \| fine	153.292 \| fine	23.748 \| good	0.643 \| good	3.329 \| good	0.312 \| good
2025-06-05T13:00:00.000Z	64 \| moderate	9.498 \| good	80.876 \| fine	27.615 \| good	0.679 \| good	3.856 \| good	0.312 \| good
2025-06-05T14:00:00.000Z	108 \| sensitive	16.367 \| fine	168.771 \| moderate	33.872 \| good	0.635 \| good	3.342 \| good	0.312 \| good
2025-06-05T15:00:00.000Z	64 \| moderate	16.15 \| fine	82.146 \| fine	35.113 \| good	0.556 \| good	4.226 \| good	0.284 \| good
2025-06-05T16:00:00.000Z	94 \| moderate	21.513 \| fine	141.201 \| fine	33.478 \| good	0.589 \| good	3.553 \| good	0.279 \| good
2025-06-05T17:00:00.000Z	79 \| moderate	17.936 \| fine	110.914 \| fine	37.132 \| good	0.57 \| good	3.668 \| good	0.32 \| good
2025-06-05T18:00:00.000Z	66 \| moderate	6.424 \| good	84.89 \| fine	36.487 \| good	0.353 \| good	3.549 \| good	0.314 \| good
2025-06-05T19:00:00.000Z	38 \| good	5.63 \| good	41.014 \| good	36.214 \| good	0.573 \| good	3.86 \| good	0.272 \| good
2025-06-05T20:00:00.000Z	75 \| moderate	14.059 \| fine	104.45 \| fine	39.324 \| good	0.544 \| good	4.689 \| good	0.265 \| good
2025-06-05T21:00:00.000Z	56 \| moderate	6.571 \| good	64.61 \| fine	41.525 \| good	0.551 \| good	3.562 \| good	0.258 \| good
2025-06-05T22:00:00.000Z	49 \| good	6.343 \| good	53.119 \| good	42.542 \| good	0.591 \| good	3.02 \| good	0.258 \| good
2025-06-05T23:00:00.000Z	44 \| good	7.597 \| good	29.551 \| good	38.905 \| good	0.669 \| good	3.827 \| good	0.206 \| good
2025-06-06T00:00:00.000Z	38 \| good	7.297 \| good	33.015 \| good	38.407 \| good	0.645 \| good	4.027 \| good	0.293 \| good
2025-06-06T01:00:00.000Z	49 \| good	8.562 \| good	29.61 \| good	36.711 \| good	0.702 \| good	1.783 \| good	0.257 \| good
2025-06-06T02:00:00.000Z	44 \| good	8.043 \| good	33.966 \| good	34.789 \| good	0.631 \| good	4.069 \| good	0.3 \| good
2025-06-06T03:00:00.000Z	49 \| good	9.363 \| good	31.067 \| good	21.106 \| good	0.602 \| good	5.154 \| good	0.347 \| good
2025-06-06T04:00:00.000Z	38 \| good	7.083 \| good	36.06 \| good	27.087 \| good	0.565 \| good	8.074 \| good	0.385 \| good
2025-06-06T05:00:00.000Z	49 \| good	9.311 \| good	44.035 \| good	23.072 \| good	0.524 \| good	9.272 \| good	0.472 \| good
2025-06-06T06:00:00.000Z	52 \| moderate	10.445 \| good	48.801 \| good	17.729 \| good	0.407 \| good	9.364 \| good	0.546 \| good
2025-06-06T07:00:00.000Z	52 \| moderate	9.613 \| good	48.209 \| good	16.41 \| good	0.415 \| good	16.42 \| good	0.546 \| good
2025-06-06T08:00:00.000Z	52 \| moderate	9.655 \| good	30.749 \| good	16.518 \| good	0.415 \| good	13.49 \| good	0.553 \| good
2025-06-06T09:00:00.000Z	52 \| moderate	9.826 \| good	35.882 \| good	14.005 \| good	0.642 \| good	6.536 \| good	0.438 \| good
2025-06-06T10:00:00.000Z	38 \| good	7.449 \| good	28.164 \| good	7.821 \| good	0.577 \| good	14.66 \| good	0.408 \| good
2025-06-06T10:00:00.000Z	38 \| good	7.449 \| good	28.164 \| good	7.821 \| good	0.577 \| good	14.66 \| good	0.408 \| good
2025-06-06T11:00:00.000Z	62 \| moderate	15.384 \| fine	68.244 \| fine	17.602 \| good	0.461 \| good	5.964 \| good	0.292 \| good
2025-06-06T12:00:00.000Z	69 \| moderate	19.005 \| fine	83.633 \| fine	13.25 \| good	0.507 \| good	5.835 \| good	0.29 \| good
2025-06-06T13:00:00.000Z	71 \| moderate	19.611 \| fine	86.411 \| fine	19.001 \| good	0.751 \| good	1.646 \| good	0.238 \| good
2025-06-06T14:00:00.000Z	77 \| moderate	22.533 \| fine	98.453 \| fine	24.154 \| good	0.864 \| good	1.789 \| good	0.242 \| good
2025-06-06T15:00:00.000Z	84 \| moderate	26.951 \| fine	116.982 \| fine	23.98 \| good	0.977 \| good	1.931 \| good	0.247 \| good
2025-06-06T16:00:00.000Z	81 \| moderate	25.3 \| fine	110.306 \| fine	28.849 \| good	0.54 \| good	0.914 \| good	0.203 \| good
2025-06-06T17:00:00.000Z	77 \| moderate	23.104 \| fine	100.85 \| fine	30.002 \| good	0.625 \| good	1.047 \| good	0.204 \| good
2025-06-06T18:00:00.000Z	79 \| moderate	23.746 \| fine	103.546 \| fine	32.333 \| good	0.711 \| good	1.18 \| good	0.205 \| good
2025-06-06T19:00:00.000Z	77 \| moderate	22.906 \| fine	100.33 \| fine	32.504 \| good	0.642 \| good	1.236 \| good	0.196 \| good
2025-06-06T20:00:00.000Z	79 \| moderate	23.986 \| fine	104.867 \| fine	31.593 \| good	0.777 \| good	1.451 \| good	0.197 \| good
2025-06-06T21:00:00.000Z	75 \| moderate	21.595 \| fine	94.232 \| fine	29.454 \| good	0.912 \| good	1.667 \| good	0.199 \| good
2025-06-06T22:00:00.000Z	60 \| moderate	13.947 \| fine	62.94 \| fine	40.097 \| good	0.606 \| good	3.152 \| good	0.218 \| good
2025-06-06T23:00:00.000Z	52 \| moderate	10.066 \| good	44.688 \| good	41.452 \| good	0.679 \| good	3.9 \| good	0.224 \| good
2025-06-07T00:00:00.000Z	67 \| moderate	17.661 \| fine	77.939 \| fine	45.626 \| good	0.753 \| good	4.647 \| good	0.23 \| good
2025-06-07T01:00:00.000Z	66 \| moderate	17.363 \| fine	76.954 \| fine	35.887 \| good	0.7 \| good	10.454 \| good	0.295 \| good
2025-06-07T02:00:00.000Z	75 \| moderate	21.776 \| fine	95.864 \| fine	32.056 \| good	0.813 \| good	11.995 \| good	0.307 \| good
2025-06-07T03:00:00.000Z	84 \| moderate	26.969 \| fine	117.285 \| fine	28.346 \| good	0.926 \| good	13.537 \| good	0.32 \| good
2025-06-07T04:00:00.000Z	94 \| moderate	32.103 \| fine	138.804 \| fine	26.903 \| good	0.055 \| good	14.433 \| good	0.353 \| good
2025-06-07T05:00:00.000Z	102 \| sensitive	35.597 \| moderate	154.894 \| fine	25.259 \| good	0.072 \| good	16.198 \| good	0.372 \| good
2025-06-07T06:00:00.000Z	107 \| sensitive	37.697 \| moderate	165.681 \| moderate	23.899 \| good	0.089 \| good	17.963 \| good	0.392 \| good
2025-06-07T07:00:00.000Z	103 \| sensitive	36.41 \| moderate	158.536 \| moderate	20.027 \| good	0.057 \| good	8.129 \| good	0.301 \| good
2025-06-07T08:00:00.000Z	107 \| sensitive	37.708 \| moderate	165.417 \| moderate	19.257 \| good	0.071 \| good	7.864 \| good	0.3 \| good
2025-06-07T09:00:00.000Z	99 \| moderate	35.035 \| fine	151.595 \| fine	18.595 \| good	0.085 \| good	7.598 \| good	0.299 \| good
2025-06-07T10:00:00.000Z	90 \| moderate	29.911 \| fine	129.556 \| fine	20.672 \| good	0.035 \| good	4.613 \| good	0.271 \| good
2025-06-07T11:00:00.000Z	77 \| moderate	23.25 \| fine	102.087 \| fine	23.642 \| good	0.045 \| good	4.761 \| good	0.276 \| good
2025-06-07T12:00:00.000Z	66 \| moderate	16.674 \| fine	74.173 \| fine	25.162 \| good	0.055 \| good	4.91 \| good	0.28 \| good
2025-06-07T13:00:00.000Z	56 \| moderate	12.28 \| fine	55.226 \| fine	29.584 \| good	0.349 \| good	2.35 \| good	0.249 \| good
2025-06-07T14:00:00.000Z	58 \| moderate	13.09 \| fine	58.569 \| fine	30.398 \| good	0.418 \| good	2.609 \| good	0.255 \| good
2025-06-07T15:00:00.000Z	62 \| moderate	15.178 \| fine	68.214 \| fine	29.222 \| good	0.487 \| good	2.869 \| good	0.262 \| good
2025-06-07T16:00:00.000Z	66 \| moderate	16.545 \| fine	73.232 \| fine	30.315 \| good	0.869 \| good	1.674 \| good	0.215 \| good
2025-06-07T17:00:00.000Z	64 \| moderate	16.441 \| fine	72.943 \| fine	33.732 \| good	0.98 \| good	1.881 \| good	0.22 \| good
2025-06-07T18:00:00.000Z	71 \| moderate	19.685 \| fine	86.381 \| fine	38.784 \| good	1.092 \| good	2.088 \| good	0.225 \| good
2025-06-07T19:00:00.000Z	62 \| moderate	15.421 \| fine	68.8 \| fine	54.028 \| good	0.577 \| good	1.285 \| good	0.194 \| good
2025-06-07T20:00:00.000Z	45 \| good	7.629 \| good	33.739 \| good	48.7 \| good	0.742 \| good	1.476 \| good	0.199 \| good
2025-06-07T21:00:00.000Z	44 \| good	2.661 \| good	11.223 \| good	46.93 \| good	0.907 \| good	1.668 \| good	0.205 \| good
2025-06-07T22:00:00.000Z	43 \| good	0.564 \| good	2.1 \| good	45.677 \| good	0.179 \| good	2.3 \| good	0.172 \| good
2025-06-07T23:00:00.000Z	42 \| good	2.211 \| good	9.113 \| good	44.89 \| good	0.261 \| good	2.754 \| good	0.179 \| good
2025-06-08T00:00:00.000Z	41 \| good	4.759 \| good	20.675 \| good	44.29 \| good	0.343 \| good	3.207 \| good	0.187 \| good
2025-06-08T01:00:00.000Z	39 \| good	4.661 \| good	20.107 \| good	41.823 \| good	0.191 \| good	2.315 \| good	0.164 \| good
2025-06-08T02:00:00.000Z	38 \| good	5.392 \| good	23.319 \| good	41.429 \| good	0.268 \| good	2.829 \| good	0.168 \| good
2025-06-08T03:00:00.000Z	38 \| good	7.408 \| good	32.589 \| good	40.917 \| good	0.344 \| good	3.342 \| good	0.172 \| good
2025-06-08T04:00:00.000Z	52 \| moderate	10.054 \| good	44.425 \| good	38.415 \| good	0.254 \| good	1.927 \| good	0.195 \| good
2025-06-08T05:00:00.000Z	56 \| moderate	11.578 \| good	51.114 \| good	36.442 \| good	0.253 \| good	2.049 \| good	0.188 \| good
2025-06-08T06:00:00.000Z	28 \| good	3.68 \| good	3.717 \| good	30.134 \| good	0.243 \| good	2.117 \| good	0.182 \| good
2025-06-08T07:00:00.000Z	54 \| moderate	11.411 \| good	50.655 \| good	33.554 \| good	0.251 \| good	2.208 \| good	0.198 \| good
2025-06-08T08:00:00.000Z	56 \| moderate	11.566 \| good	50.958 \| good	31.072 \| good	0.26 \| good	2.346 \| good	0.198 \| good
2025-06-08T09:00:00.000Z	52 \| moderate	9.85 \| good	43.635 \| good	33.569 \| good	0.269 \| good	2.485 \| good	0.198 \| good
2025-06-08T10:00:00.000Z	44 \| good	8.421 \| good	36.99 \| good	32.679 \| good	0.442 \| good	1.871 \| good	0.197 \| good

Live air quality index in O'Fallon, Missouri today

Major 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)

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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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Frequently asked questions

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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?