What is the current level of PM10 in Lake St. Louis, Missouri?

Lake St. Louis, Missouri currently has a PM10 concentration of 39.654 μg/m3.

What is the current level of sulfur dioxide (SO2) in Lake St. Louis, Missouri?

The current sulfur dioxide (SO2) concentration in Lake St. Louis, Missouri is 0.581 ppb.

What is the current level of ozone (O3) in Lake St. Louis, Missouri?

Lake St. Louis, Missouri currently has an ozone (O3) concentration of 25.328 ppm.

What is the current level of nitrogen dioxide (NO2) in Lake St. Louis, Missouri?

The current level of nitrogen dioxide (NO2) in Lake St. Louis, Missouri is 5.323 ppb.

Current air quality index in Lake St. Louis, Missouri today

Q: What is the PM2.5 concentration in Lake St. Louis, Missouri right now?

Lake St. Louis, Missouri currently has a PM2.5 concentration of 10.931 μg/m3.

Stay updated with real-time air quality in Lake St. Louis, 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)

Moderate

Lake St. Louis, Missouri

Last updated: ... (Local time)

Common air pollutants in Lake St. Louis, Missouri

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

11.31 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

42.01 μg/m³

155

255

425

605+

Ozone (O₃)

13.53 ppb

201

201+

Sulfur Dioxide (SO₂)

0.62 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.82 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Lake St. Louis, Missouri

Get Live Pollen Counts

Lake St. Louis, Missouri

Scroll To Air Quality Map

Track live Lake St. Louis, Missouri air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-11T10:00:00.000Z	44 \| good	8.466 \| good	35.048 \| good	24.265 \| good	6.483 \| good	4.166 \| good	0.296 \| good
2026-08-11T11:00:00.000Z	49 \| good	8.7 \| good	35.576 \| good	18.286 \| good	9.832 \| good	2.783 \| good	0.254 \| good
2026-08-11T12:00:00.000Z	38 \| good	7.249 \| good	29.38 \| good	19.727 \| good	4.913 \| good	6.273 \| good	0.256 \| good
2026-08-11T13:00:00.000Z	38 \| good	7.495 \| good	26.494 \| good	18.316 \| good	1.59 \| good	5.699 \| good	0.256 \| good
2026-08-11T14:00:00.000Z	38 \| good	6.75 \| good	31.166 \| good	22.719 \| good	2.424 \| good	4.751 \| good	0.289 \| good
2026-08-11T15:00:00.000Z	38 \| good	7.021 \| good	28.682 \| good	24.522 \| good	1.443 \| good	3.454 \| good	0.254 \| good
2026-08-11T16:00:00.000Z	38 \| good	6.777 \| good	31.275 \| good	28.472 \| good	1.002 \| good	4.117 \| good	0.212 \| good
2026-08-11T17:00:00.000Z	38 \| good	7.089 \| good	28.602 \| good	30.351 \| good	0.745 \| good	4.504 \| good	0.247 \| good
2026-08-11T18:00:00.000Z	38 \| good	7.399 \| good	29.236 \| good	35.727 \| good	0.933 \| good	4.89 \| good	0.205 \| good
2026-08-11T19:00:00.000Z	44 \| good	8.316 \| good	37.027 \| good	36.243 \| good	0.927 \| good	5.978 \| good	0.247 \| good
2026-08-11T20:00:00.000Z	44 \| good	7.918 \| good	32.614 \| good	40.096 \| good	0.622 \| good	6.121 \| good	0.247 \| good
2026-08-11T21:00:00.000Z	33 \| good	6.435 \| good	29.57 \| good	36.268 \| good	0.573 \| good	4.805 \| good	0.205 \| good
2026-08-11T22:00:00.000Z	34 \| good	5.865 \| good	25.611 \| good	37.471 \| good	0.541 \| good	4.533 \| good	0.212 \| good
2026-08-11T23:00:00.000Z	38 \| good	6.852 \| good	33.092 \| good	36.567 \| good	0.851 \| good	4.188 \| good	0.212 \| good
2026-08-12T00:00:00.000Z	38 \| good	7.434 \| good	34.917 \| good	36.507 \| good	0.767 \| good	3.036 \| good	0.212 \| good
2026-08-12T01:00:00.000Z	38 \| good	7.004 \| good	25.695 \| good	30.909 \| good	0.81 \| good	2.447 \| good	0.212 \| good
2026-08-12T02:00:00.000Z	49 \| good	9.189 \| good	46.842 \| good	30.096 \| good	0.795 \| good	2.748 \| good	0.205 \| good
2026-08-12T03:00:00.000Z	22 \| good	4.287 \| good	18.424 \| good	23.729 \| good	0.423 \| good	2.858 \| good	0.16 \| good
2026-08-12T04:00:00.000Z	38 \| good	7.307 \| good	31.547 \| good	25.453 \| good	0.827 \| good	5.053 \| good	0.296 \| good
2026-08-12T05:00:00.000Z	44 \| good	7.95 \| good	35.752 \| good	22.236 \| good	0.721 \| good	5.432 \| good	0.254 \| good
2026-08-12T06:00:00.000Z	38 \| good	7.291 \| good	32.217 \| good	19.823 \| good	0.747 \| good	4.219 \| good	0.205 \| good
2026-08-12T07:00:00.000Z	38 \| good	7.404 \| good	32.053 \| good	20.847 \| good	0.739 \| good	4.283 \| good	0.205 \| good
2026-08-12T08:00:00.000Z	44 \| good	7.954 \| good	33.972 \| good	19.276 \| good	0.735 \| good	4.144 \| good	0.219 \| good
2026-08-12T09:00:00.000Z	49 \| good	8.872 \| good	31.592 \| good	16.37 \| good	0.798 \| good	2.623 \| good	0.205 \| good
2026-08-12T10:00:00.000Z	38 \| good	7.267 \| good	29.196 \| good	23.064 \| good	1.116 \| good	2.786 \| good	0.205 \| good
2026-08-12T11:00:00.000Z	38 \| good	6.944 \| good	25.245 \| good	22.511 \| good	1.124 \| good	4.06 \| good	0.205 \| good
2026-08-12T12:00:00.000Z	33 \| good	5.713 \| good	34.598 \| good	21.297 \| good	0.929 \| good	9.218 \| good	0.247 \| good
2026-08-12T13:00:00.000Z	44 \| good	7.849 \| good	33.431 \| good	22.73 \| good	1.059 \| good	5.368 \| good	0.282 \| good
2026-08-12T14:00:00.000Z	44 \| good	8.371 \| good	28.3 \| good	24.637 \| good	1.33 \| good	4.967 \| good	0.262 \| good
2026-08-12T15:00:00.000Z	52 \| moderate	10.013 \| good	32.211 \| good	24.518 \| good	1.063 \| good	4.931 \| good	0.204 \| good
2026-08-12T16:00:00.000Z	52 \| moderate	9.612 \| good	35.327 \| good	26.678 \| good	1.112 \| good	3.74 \| good	0.247 \| good
2026-08-12T17:00:00.000Z	52 \| moderate	9.909 \| good	41.446 \| good	28.396 \| good	1.431 \| good	5.455 \| good	0.254 \| good
2026-08-12T18:00:00.000Z	49 \| good	9.159 \| good	42.519 \| good	28.186 \| good	1.316 \| good	3.907 \| good	0.27 \| good
2026-08-12T19:00:00.000Z	49 \| good	9.495 \| good	44.758 \| good	30.001 \| good	0.759 \| good	4.684 \| good	0.226 \| good
2026-08-12T20:00:00.000Z	52 \| moderate	9.618 \| good	36.889 \| good	31.481 \| good	0.703 \| good	7.716 \| good	0.27 \| good
2026-08-12T21:00:00.000Z	49 \| good	9.166 \| good	34.963 \| good	32.312 \| good	0.697 \| good	5.883 \| good	0.303 \| good
2026-08-12T22:00:00.000Z	52 \| moderate	9.846 \| good	34.593 \| good	28.833 \| good	0.699 \| good	4.087 \| good	0.233 \| good
2026-08-12T23:00:00.000Z	49 \| good	9.28 \| good	42.947 \| good	36.805 \| good	0.661 \| good	4.665 \| good	0.233 \| good
2026-08-13T00:00:00.000Z	49 \| good	8.771 \| good	38.169 \| good	28.99 \| good	0.676 \| good	5.623 \| good	0.289 \| good
2026-08-13T01:00:00.000Z	49 \| good	8.965 \| good	34.766 \| good	25.412 \| good	0.734 \| good	6.804 \| good	0.331 \| good
2026-08-13T02:00:00.000Z	52 \| moderate	10.149 \| good	49.429 \| good	31.456 \| good	0.638 \| good	4.738 \| good	0.289 \| good
2026-08-13T03:00:00.000Z	54 \| moderate	10.931 \| good	39.654 \| good	25.328 \| good	0.581 \| good	5.323 \| good	0.262 \| good
2026-08-13T04:00:00.000Z	38 \| good	7.217 \| good	31.211 \| good	28.178 \| good	0.589 \| good	5.591 \| good	0.339 \| good
2026-08-13T05:00:00.000Z	56 \| moderate	11.718 \| good	37.816 \| good	28.492 \| good	0.573 \| good	9.297 \| good	0.381 \| good
2026-08-13T06:00:00.000Z	56 \| moderate	11.881 \| good	42.685 \| good	19.108 \| good	0.605 \| good	8.766 \| good	0.332 \| good
2026-08-13T07:00:00.000Z	56 \| moderate	11.569 \| good	39.788 \| good	18.607 \| good	0.612 \| good	7.718 \| good	0.332 \| good
2026-08-13T08:00:00.000Z	54 \| moderate	11.315 \| good	42.011 \| good	13.526 \| good	0.619 \| good	6.815 \| good	0.317 \| good
2026-08-13T09:00:00.000Z	54 \| moderate	11.315 \| good	42.011 \| good	13.526 \| good	0.619 \| good	6.815 \| good	0.317 \| good
2026-08-13T05:00:00.000Z	44 \| good	7.737 \| good	33.997 \| good	21.849 \| good	0.819 \| good	7.36 \| good	0.208 \| good
2026-08-13T06:00:00.000Z	44 \| good	7.733 \| good	34.028 \| good	19.072 \| good	0.596 \| good	5.215 \| good	0.188 \| good
2026-08-13T07:00:00.000Z	38 \| good	7.062 \| good	31.154 \| good	19.378 \| good	0.418 \| good	3.239 \| good	0.166 \| good
2026-08-13T08:00:00.000Z	44 \| good	7.594 \| good	33.339 \| good	19.7 \| good	0.352 \| good	2.276 \| good	0.152 \| good
2026-08-13T09:00:00.000Z	38 \| good	7.372 \| good	32.332 \| good	16.119 \| good	0.342 \| good	1.95 \| good	0.144 \| good
2026-08-13T10:00:00.000Z	44 \| good	7.814 \| good	34.066 \| good	12.517 \| good	0.346 \| good	1.965 \| good	0.141 \| good
2026-08-13T11:00:00.000Z	44 \| good	7.613 \| good	33.357 \| good	11.244 \| good	0.342 \| good	2.622 \| good	0.143 \| good
2026-08-13T12:00:00.000Z	49 \| good	9.104 \| good	40.939 \| good	14.015 \| good	0.334 \| good	3.098 \| good	0.148 \| good
2026-08-13T13:00:00.000Z	49 \| good	8.939 \| good	39.112 \| good	21.677 \| good	0.447 \| good	3.648 \| good	0.159 \| good
2026-08-13T14:00:00.000Z	44 \| good	8.497 \| good	37.023 \| good	32.088 \| good	0.616 \| good	3.6 \| good	0.173 \| good
2026-08-13T15:00:00.000Z	38 \| good	7.313 \| good	31.922 \| good	38.102 \| good	0.925 \| good	2.541 \| good	0.181 \| good
2026-08-13T16:00:00.000Z	41 \| good	6.531 \| good	28.802 \| good	43.721 \| good	1.644 \| good	1.774 \| good	0.177 \| good
2026-08-13T17:00:00.000Z	54 \| moderate	10.158 \| good	44.64 \| good	55.927 \| fine	2.203 \| good	1.456 \| good	0.174 \| good
2026-08-13T18:00:00.000Z	84 \| moderate	11.139 \| good	49.442 \| good	64.831 \| fine	2.262 \| good	1.188 \| good	0.171 \| good
2026-08-13T19:00:00.000Z	47 \| good	5.034 \| good	21.712 \| good	50.611 \| good	2.104 \| good	1.024 \| good	0.165 \| good
2026-08-13T20:00:00.000Z	47 \| good	4.731 \| good	20.721 \| good	51.254 \| good	1.736 \| good	0.906 \| good	0.157 \| good
2026-08-13T21:00:00.000Z	54 \| moderate	5.592 \| good	23.973 \| good	56.456 \| fine	1.34 \| good	0.815 \| good	0.149 \| good
2026-08-13T22:00:00.000Z	64 \| moderate	6.235 \| good	27.895 \| good	58.629 \| fine	1.104 \| good	0.847 \| good	0.146 \| good
2026-08-13T23:00:00.000Z	51 \| moderate	6.565 \| good	29.135 \| good	54.607 \| good	1.009 \| good	1.826 \| good	0.156 \| good
2026-08-14T00:00:00.000Z	37 \| good	5.599 \| good	24.17 \| good	40.289 \| good	1.021 \| good	4.402 \| good	0.187 \| good
2026-08-14T01:00:00.000Z	38 \| good	6.798 \| good	30.018 \| good	31.916 \| good	1.202 \| good	6.875 \| good	0.209 \| good
2026-08-14T02:00:00.000Z	38 \| good	7.333 \| good	32.089 \| good	23.018 \| good	1.46 \| good	7.377 \| good	0.211 \| good
2026-08-14T03:00:00.000Z	44 \| good	8.262 \| good	36.082 \| good	20.104 \| good	1.521 \| good	6.929 \| good	0.205 \| good
2026-08-14T04:00:00.000Z	44 \| good	8.441 \| good	37.01 \| good	20.306 \| good	1.384 \| good	6.573 \| good	0.198 \| good
2026-08-14T05:00:00.000Z	44 \| good	8.473 \| good	36.915 \| good	22.361 \| good	1.188 \| good	6.934 \| good	0.198 \| good
2026-08-14T06:00:00.000Z	49 \| good	8.95 \| good	40.337 \| good	21.156 \| good	0.982 \| good	6.672 \| good	0.194 \| good
2026-08-14T07:00:00.000Z	52 \| moderate	9.838 \| good	43.806 \| good	18.989 \| good	0.766 \| good	5.816 \| good	0.182 \| good
2026-08-14T08:00:00.000Z	52 \| moderate	10.247 \| good	45.038 \| good	16.979 \| good	0.745 \| good	7.52 \| good	0.189 \| good
2026-08-14T09:00:00.000Z	54 \| moderate	10.934 \| good	48.058 \| good	15.017 \| good	0.611 \| good	5.646 \| good	0.173 \| good
2026-08-14T10:00:00.000Z	58 \| moderate	13.011 \| fine	58.932 \| fine	10.082 \| good	0.463 \| good	3.154 \| good	0.148 \| good
2026-08-14T11:00:00.000Z	58 \| moderate	12.924 \| fine	57.816 \| fine	9.924 \| good	0.397 \| good	2.296 \| good	0.138 \| good
2026-08-14T12:00:00.000Z	60 \| moderate	13.987 \| fine	62.274 \| fine	12.404 \| good	0.377 \| good	2.013 \| good	0.137 \| good
2026-08-14T13:00:00.000Z	58 \| moderate	12.792 \| fine	57.454 \| fine	21.929 \| good	0.381 \| good	1.954 \| good	0.144 \| good
2026-08-14T14:00:00.000Z	56 \| moderate	12.261 \| fine	55.367 \| fine	31.182 \| good	0.412 \| good	1.899 \| good	0.155 \| good
2026-08-14T15:00:00.000Z	52 \| moderate	10.173 \| good	45.396 \| good	37.165 \| good	0.517 \| good	1.275 \| good	0.153 \| good
2026-08-14T16:00:00.000Z	38 \| good	7.471 \| good	33.119 \| good	35.021 \| good	0.67 \| good	0.92 \| good	0.151 \| good
2026-08-14T17:00:00.000Z	44 \| good	7.794 \| good	34.054 \| good	35.07 \| good	0.722 \| good	0.724 \| good	0.151 \| good
2026-08-14T18:00:00.000Z	44 \| good	8.497 \| good	37.054 \| good	34.76 \| good	0.721 \| good	0.624 \| good	0.152 \| good
2026-08-14T19:00:00.000Z	38 \| good	6.781 \| good	30.054 \| good	35.352 \| good	0.754 \| good	0.61 \| good	0.156 \| good
2026-08-14T20:00:00.000Z	38 \| good	7.326 \| good	32.054 \| good	35.305 \| good	0.79 \| good	0.633 \| good	0.158 \| good
2026-08-14T21:00:00.000Z	38 \| good	7.304 \| good	32.021 \| good	34.025 \| good	0.804 \| good	0.662 \| good	0.161 \| good
2026-08-14T22:00:00.000Z	33 \| good	5.889 \| good	25.308 \| good	32.537 \| good	0.81 \| good	0.769 \| good	0.162 \| good
2026-08-14T23:00:00.000Z	33 \| good	5.795 \| good	25.158 \| good	29.123 \| good	0.813 \| good	1.189 \| good	0.166 \| good
2026-08-15T00:00:00.000Z	64 \| moderate	16.008 \| fine	19.267 \| good	44.254 \| good	0.761 \| good	4.703 \| good	0.209 \| good
2026-08-15T01:00:00.000Z	44 \| good	8.216 \| good	36.173 \| good	23.663 \| good	0.802 \| good	9.49 \| good	0.257 \| good
2026-08-15T02:00:00.000Z	49 \| good	9.067 \| good	40.871 \| good	21.805 \| good	0.97 \| good	13.455 \| good	0.29 \| good
2026-08-15T03:00:00.000Z	44 \| good	8.205 \| good	36.05 \| good	20.442 \| good	1.21 \| good	13.231 \| good	0.29 \| good
2026-08-15T04:00:00.000Z	44 \| good	8.317 \| good	36.895 \| good	20.168 \| good	1.463 \| good	12.199 \| good	0.283 \| good

Lake St. Louis

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Lake St. Louis, Missouri

0.32ppm

How accurate is Missouri, USA air quality data?

The air quality data for Missouri, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How frequently does the air quality data for Lake St. Louis, Missouri get updated?

Air quality updates for Lake St. Louis, Missouri are available every hour.

What time in the past 24 hours saw the poorest air quality in Lake St. Louis, Missouri?

Lake St. Louis, Missouri experienced its worst air quality at 12:00:00, 2026-08-13.

When was air quality in Lake St. Louis, Missouri the best over the past 24 hours?

The best air quality in Lake St. Louis, Missouri was observed at 12:00:00 on 2026-08-12.

What is the air quality in Lake St. Louis, Missouri right now?

The air quality in Lake St. Louis, Missouri right now is Moderate, with an AQI of 54.

What pollutant is most frequently found in Lake St. Louis, Missouri?

In Lake St. Louis, Missouri, PM2.5 is the most frequently found pollutant.

What can I do if the air quality in Lake St. Louis, Missouri is poor?

When air quality in Lake St. Louis, Missouri is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Lake St. Louis, Missouri right now?

Lake St. Louis, Missouri currently has a PM_2.5 concentration of 10.931 μg/m³.

What is the current level of PM₁₀ in Lake St. Louis, Missouri?

Lake St. Louis, Missouri currently has a PM₁₀ concentration of 39.654 μg/m³.

What is the current level of carbon monoxide (CO) in Lake St. Louis, Missouri?

The current carbon monoxide (CO) level in Lake St. Louis, Missouri is 0.262 ppm.

What is the current level of sulfur dioxide (SO₂) in Lake St. Louis, Missouri?

The current sulfur dioxide (SO₂) concentration in Lake St. Louis, Missouri is 0.581 ppb.

What is the current level of ozone (O₃) in Lake St. Louis, Missouri?

Lake St. Louis, Missouri currently has an ozone (O₃) concentration of 25.328 ppm.

What is the current level of nitrogen dioxide (NO₂) in Lake St. Louis, Missouri?

The current level of nitrogen dioxide (NO₂) in Lake St. Louis, Missouri is 5.323 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-11T10:00:00.000Z	44 \| good	8.466 \| good	35.048 \| good	24.265 \| good	6.483 \| good	4.166 \| good	0.296 \| good
2026-08-11T11:00:00.000Z	49 \| good	8.7 \| good	35.576 \| good	18.286 \| good	9.832 \| good	2.783 \| good	0.254 \| good
2026-08-11T12:00:00.000Z	38 \| good	7.249 \| good	29.38 \| good	19.727 \| good	4.913 \| good	6.273 \| good	0.256 \| good
2026-08-11T13:00:00.000Z	38 \| good	7.495 \| good	26.494 \| good	18.316 \| good	1.59 \| good	5.699 \| good	0.256 \| good
2026-08-11T14:00:00.000Z	38 \| good	6.75 \| good	31.166 \| good	22.719 \| good	2.424 \| good	4.751 \| good	0.289 \| good
2026-08-11T15:00:00.000Z	38 \| good	7.021 \| good	28.682 \| good	24.522 \| good	1.443 \| good	3.454 \| good	0.254 \| good
2026-08-11T16:00:00.000Z	38 \| good	6.777 \| good	31.275 \| good	28.472 \| good	1.002 \| good	4.117 \| good	0.212 \| good
2026-08-11T17:00:00.000Z	38 \| good	7.089 \| good	28.602 \| good	30.351 \| good	0.745 \| good	4.504 \| good	0.247 \| good
2026-08-11T18:00:00.000Z	38 \| good	7.399 \| good	29.236 \| good	35.727 \| good	0.933 \| good	4.89 \| good	0.205 \| good
2026-08-11T19:00:00.000Z	44 \| good	8.316 \| good	37.027 \| good	36.243 \| good	0.927 \| good	5.978 \| good	0.247 \| good
2026-08-11T20:00:00.000Z	44 \| good	7.918 \| good	32.614 \| good	40.096 \| good	0.622 \| good	6.121 \| good	0.247 \| good
2026-08-11T21:00:00.000Z	33 \| good	6.435 \| good	29.57 \| good	36.268 \| good	0.573 \| good	4.805 \| good	0.205 \| good
2026-08-11T22:00:00.000Z	34 \| good	5.865 \| good	25.611 \| good	37.471 \| good	0.541 \| good	4.533 \| good	0.212 \| good
2026-08-11T23:00:00.000Z	38 \| good	6.852 \| good	33.092 \| good	36.567 \| good	0.851 \| good	4.188 \| good	0.212 \| good
2026-08-12T00:00:00.000Z	38 \| good	7.434 \| good	34.917 \| good	36.507 \| good	0.767 \| good	3.036 \| good	0.212 \| good
2026-08-12T01:00:00.000Z	38 \| good	7.004 \| good	25.695 \| good	30.909 \| good	0.81 \| good	2.447 \| good	0.212 \| good
2026-08-12T02:00:00.000Z	49 \| good	9.189 \| good	46.842 \| good	30.096 \| good	0.795 \| good	2.748 \| good	0.205 \| good
2026-08-12T03:00:00.000Z	22 \| good	4.287 \| good	18.424 \| good	23.729 \| good	0.423 \| good	2.858 \| good	0.16 \| good
2026-08-12T04:00:00.000Z	38 \| good	7.307 \| good	31.547 \| good	25.453 \| good	0.827 \| good	5.053 \| good	0.296 \| good
2026-08-12T05:00:00.000Z	44 \| good	7.95 \| good	35.752 \| good	22.236 \| good	0.721 \| good	5.432 \| good	0.254 \| good
2026-08-12T06:00:00.000Z	38 \| good	7.291 \| good	32.217 \| good	19.823 \| good	0.747 \| good	4.219 \| good	0.205 \| good
2026-08-12T07:00:00.000Z	38 \| good	7.404 \| good	32.053 \| good	20.847 \| good	0.739 \| good	4.283 \| good	0.205 \| good
2026-08-12T08:00:00.000Z	44 \| good	7.954 \| good	33.972 \| good	19.276 \| good	0.735 \| good	4.144 \| good	0.219 \| good
2026-08-12T09:00:00.000Z	49 \| good	8.872 \| good	31.592 \| good	16.37 \| good	0.798 \| good	2.623 \| good	0.205 \| good
2026-08-12T10:00:00.000Z	38 \| good	7.267 \| good	29.196 \| good	23.064 \| good	1.116 \| good	2.786 \| good	0.205 \| good
2026-08-12T11:00:00.000Z	38 \| good	6.944 \| good	25.245 \| good	22.511 \| good	1.124 \| good	4.06 \| good	0.205 \| good
2026-08-12T12:00:00.000Z	33 \| good	5.713 \| good	34.598 \| good	21.297 \| good	0.929 \| good	9.218 \| good	0.247 \| good
2026-08-12T13:00:00.000Z	44 \| good	7.849 \| good	33.431 \| good	22.73 \| good	1.059 \| good	5.368 \| good	0.282 \| good
2026-08-12T14:00:00.000Z	44 \| good	8.371 \| good	28.3 \| good	24.637 \| good	1.33 \| good	4.967 \| good	0.262 \| good
2026-08-12T15:00:00.000Z	52 \| moderate	10.013 \| good	32.211 \| good	24.518 \| good	1.063 \| good	4.931 \| good	0.204 \| good
2026-08-12T16:00:00.000Z	52 \| moderate	9.612 \| good	35.327 \| good	26.678 \| good	1.112 \| good	3.74 \| good	0.247 \| good
2026-08-12T17:00:00.000Z	52 \| moderate	9.909 \| good	41.446 \| good	28.396 \| good	1.431 \| good	5.455 \| good	0.254 \| good
2026-08-12T18:00:00.000Z	49 \| good	9.159 \| good	42.519 \| good	28.186 \| good	1.316 \| good	3.907 \| good	0.27 \| good
2026-08-12T19:00:00.000Z	49 \| good	9.495 \| good	44.758 \| good	30.001 \| good	0.759 \| good	4.684 \| good	0.226 \| good
2026-08-12T20:00:00.000Z	52 \| moderate	9.618 \| good	36.889 \| good	31.481 \| good	0.703 \| good	7.716 \| good	0.27 \| good
2026-08-12T21:00:00.000Z	49 \| good	9.166 \| good	34.963 \| good	32.312 \| good	0.697 \| good	5.883 \| good	0.303 \| good
2026-08-12T22:00:00.000Z	52 \| moderate	9.846 \| good	34.593 \| good	28.833 \| good	0.699 \| good	4.087 \| good	0.233 \| good
2026-08-12T23:00:00.000Z	49 \| good	9.28 \| good	42.947 \| good	36.805 \| good	0.661 \| good	4.665 \| good	0.233 \| good
2026-08-13T00:00:00.000Z	49 \| good	8.771 \| good	38.169 \| good	28.99 \| good	0.676 \| good	5.623 \| good	0.289 \| good
2026-08-13T01:00:00.000Z	49 \| good	8.965 \| good	34.766 \| good	25.412 \| good	0.734 \| good	6.804 \| good	0.331 \| good
2026-08-13T02:00:00.000Z	52 \| moderate	10.149 \| good	49.429 \| good	31.456 \| good	0.638 \| good	4.738 \| good	0.289 \| good
2026-08-13T03:00:00.000Z	54 \| moderate	10.931 \| good	39.654 \| good	25.328 \| good	0.581 \| good	5.323 \| good	0.262 \| good
2026-08-13T04:00:00.000Z	38 \| good	7.217 \| good	31.211 \| good	28.178 \| good	0.589 \| good	5.591 \| good	0.339 \| good
2026-08-13T05:00:00.000Z	56 \| moderate	11.718 \| good	37.816 \| good	28.492 \| good	0.573 \| good	9.297 \| good	0.381 \| good
2026-08-13T06:00:00.000Z	56 \| moderate	11.881 \| good	42.685 \| good	19.108 \| good	0.605 \| good	8.766 \| good	0.332 \| good
2026-08-13T07:00:00.000Z	56 \| moderate	11.569 \| good	39.788 \| good	18.607 \| good	0.612 \| good	7.718 \| good	0.332 \| good
2026-08-13T08:00:00.000Z	54 \| moderate	11.315 \| good	42.011 \| good	13.526 \| good	0.619 \| good	6.815 \| good	0.317 \| good
2026-08-13T09:00:00.000Z	54 \| moderate	11.315 \| good	42.011 \| good	13.526 \| good	0.619 \| good	6.815 \| good	0.317 \| good
2026-08-13T05:00:00.000Z	44 \| good	7.737 \| good	33.997 \| good	21.849 \| good	0.819 \| good	7.36 \| good	0.208 \| good
2026-08-13T06:00:00.000Z	44 \| good	7.733 \| good	34.028 \| good	19.072 \| good	0.596 \| good	5.215 \| good	0.188 \| good
2026-08-13T07:00:00.000Z	38 \| good	7.062 \| good	31.154 \| good	19.378 \| good	0.418 \| good	3.239 \| good	0.166 \| good
2026-08-13T08:00:00.000Z	44 \| good	7.594 \| good	33.339 \| good	19.7 \| good	0.352 \| good	2.276 \| good	0.152 \| good
2026-08-13T09:00:00.000Z	38 \| good	7.372 \| good	32.332 \| good	16.119 \| good	0.342 \| good	1.95 \| good	0.144 \| good
2026-08-13T10:00:00.000Z	44 \| good	7.814 \| good	34.066 \| good	12.517 \| good	0.346 \| good	1.965 \| good	0.141 \| good
2026-08-13T11:00:00.000Z	44 \| good	7.613 \| good	33.357 \| good	11.244 \| good	0.342 \| good	2.622 \| good	0.143 \| good
2026-08-13T12:00:00.000Z	49 \| good	9.104 \| good	40.939 \| good	14.015 \| good	0.334 \| good	3.098 \| good	0.148 \| good
2026-08-13T13:00:00.000Z	49 \| good	8.939 \| good	39.112 \| good	21.677 \| good	0.447 \| good	3.648 \| good	0.159 \| good
2026-08-13T14:00:00.000Z	44 \| good	8.497 \| good	37.023 \| good	32.088 \| good	0.616 \| good	3.6 \| good	0.173 \| good
2026-08-13T15:00:00.000Z	38 \| good	7.313 \| good	31.922 \| good	38.102 \| good	0.925 \| good	2.541 \| good	0.181 \| good
2026-08-13T16:00:00.000Z	41 \| good	6.531 \| good	28.802 \| good	43.721 \| good	1.644 \| good	1.774 \| good	0.177 \| good
2026-08-13T17:00:00.000Z	54 \| moderate	10.158 \| good	44.64 \| good	55.927 \| fine	2.203 \| good	1.456 \| good	0.174 \| good
2026-08-13T18:00:00.000Z	84 \| moderate	11.139 \| good	49.442 \| good	64.831 \| fine	2.262 \| good	1.188 \| good	0.171 \| good
2026-08-13T19:00:00.000Z	47 \| good	5.034 \| good	21.712 \| good	50.611 \| good	2.104 \| good	1.024 \| good	0.165 \| good
2026-08-13T20:00:00.000Z	47 \| good	4.731 \| good	20.721 \| good	51.254 \| good	1.736 \| good	0.906 \| good	0.157 \| good
2026-08-13T21:00:00.000Z	54 \| moderate	5.592 \| good	23.973 \| good	56.456 \| fine	1.34 \| good	0.815 \| good	0.149 \| good
2026-08-13T22:00:00.000Z	64 \| moderate	6.235 \| good	27.895 \| good	58.629 \| fine	1.104 \| good	0.847 \| good	0.146 \| good
2026-08-13T23:00:00.000Z	51 \| moderate	6.565 \| good	29.135 \| good	54.607 \| good	1.009 \| good	1.826 \| good	0.156 \| good
2026-08-14T00:00:00.000Z	37 \| good	5.599 \| good	24.17 \| good	40.289 \| good	1.021 \| good	4.402 \| good	0.187 \| good
2026-08-14T01:00:00.000Z	38 \| good	6.798 \| good	30.018 \| good	31.916 \| good	1.202 \| good	6.875 \| good	0.209 \| good
2026-08-14T02:00:00.000Z	38 \| good	7.333 \| good	32.089 \| good	23.018 \| good	1.46 \| good	7.377 \| good	0.211 \| good
2026-08-14T03:00:00.000Z	44 \| good	8.262 \| good	36.082 \| good	20.104 \| good	1.521 \| good	6.929 \| good	0.205 \| good
2026-08-14T04:00:00.000Z	44 \| good	8.441 \| good	37.01 \| good	20.306 \| good	1.384 \| good	6.573 \| good	0.198 \| good
2026-08-14T05:00:00.000Z	44 \| good	8.473 \| good	36.915 \| good	22.361 \| good	1.188 \| good	6.934 \| good	0.198 \| good
2026-08-14T06:00:00.000Z	49 \| good	8.95 \| good	40.337 \| good	21.156 \| good	0.982 \| good	6.672 \| good	0.194 \| good
2026-08-14T07:00:00.000Z	52 \| moderate	9.838 \| good	43.806 \| good	18.989 \| good	0.766 \| good	5.816 \| good	0.182 \| good
2026-08-14T08:00:00.000Z	52 \| moderate	10.247 \| good	45.038 \| good	16.979 \| good	0.745 \| good	7.52 \| good	0.189 \| good
2026-08-14T09:00:00.000Z	54 \| moderate	10.934 \| good	48.058 \| good	15.017 \| good	0.611 \| good	5.646 \| good	0.173 \| good
2026-08-14T10:00:00.000Z	58 \| moderate	13.011 \| fine	58.932 \| fine	10.082 \| good	0.463 \| good	3.154 \| good	0.148 \| good
2026-08-14T11:00:00.000Z	58 \| moderate	12.924 \| fine	57.816 \| fine	9.924 \| good	0.397 \| good	2.296 \| good	0.138 \| good
2026-08-14T12:00:00.000Z	60 \| moderate	13.987 \| fine	62.274 \| fine	12.404 \| good	0.377 \| good	2.013 \| good	0.137 \| good
2026-08-14T13:00:00.000Z	58 \| moderate	12.792 \| fine	57.454 \| fine	21.929 \| good	0.381 \| good	1.954 \| good	0.144 \| good
2026-08-14T14:00:00.000Z	56 \| moderate	12.261 \| fine	55.367 \| fine	31.182 \| good	0.412 \| good	1.899 \| good	0.155 \| good
2026-08-14T15:00:00.000Z	52 \| moderate	10.173 \| good	45.396 \| good	37.165 \| good	0.517 \| good	1.275 \| good	0.153 \| good
2026-08-14T16:00:00.000Z	38 \| good	7.471 \| good	33.119 \| good	35.021 \| good	0.67 \| good	0.92 \| good	0.151 \| good
2026-08-14T17:00:00.000Z	44 \| good	7.794 \| good	34.054 \| good	35.07 \| good	0.722 \| good	0.724 \| good	0.151 \| good
2026-08-14T18:00:00.000Z	44 \| good	8.497 \| good	37.054 \| good	34.76 \| good	0.721 \| good	0.624 \| good	0.152 \| good
2026-08-14T19:00:00.000Z	38 \| good	6.781 \| good	30.054 \| good	35.352 \| good	0.754 \| good	0.61 \| good	0.156 \| good
2026-08-14T20:00:00.000Z	38 \| good	7.326 \| good	32.054 \| good	35.305 \| good	0.79 \| good	0.633 \| good	0.158 \| good
2026-08-14T21:00:00.000Z	38 \| good	7.304 \| good	32.021 \| good	34.025 \| good	0.804 \| good	0.662 \| good	0.161 \| good
2026-08-14T22:00:00.000Z	33 \| good	5.889 \| good	25.308 \| good	32.537 \| good	0.81 \| good	0.769 \| good	0.162 \| good
2026-08-14T23:00:00.000Z	33 \| good	5.795 \| good	25.158 \| good	29.123 \| good	0.813 \| good	1.189 \| good	0.166 \| good
2026-08-15T00:00:00.000Z	64 \| moderate	16.008 \| fine	19.267 \| good	44.254 \| good	0.761 \| good	4.703 \| good	0.209 \| good
2026-08-15T01:00:00.000Z	44 \| good	8.216 \| good	36.173 \| good	23.663 \| good	0.802 \| good	9.49 \| good	0.257 \| good
2026-08-15T02:00:00.000Z	49 \| good	9.067 \| good	40.871 \| good	21.805 \| good	0.97 \| good	13.455 \| good	0.29 \| good
2026-08-15T03:00:00.000Z	44 \| good	8.205 \| good	36.05 \| good	20.442 \| good	1.21 \| good	13.231 \| good	0.29 \| good
2026-08-15T04:00:00.000Z	44 \| good	8.317 \| good	36.895 \| good	20.168 \| good	1.463 \| good	12.199 \| good	0.283 \| good

Current air quality index in Lake St. Louis, Missouri today

Common air pollutants in Lake St. Louis, Missouri

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Lake St. Louis, Missouri air quality forecast and history

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Lake St. Louis, Missouri

Air quality in nearby cities

Dardenne Prairie, Missouri

Wentzville, Missouri

O'Fallon, Missouri

St. Peters, Missouri

Chesterfield, Missouri

Wildwood, Missouri

How accurate is Missouri, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently does the air quality data for Lake St. Louis, Missouri get updated?

What time in the past 24 hours saw the poorest air quality in Lake St. Louis, Missouri?

When was air quality in Lake St. Louis, Missouri the best over the past 24 hours?

What is the air quality in Lake St. Louis, Missouri right now?

What pollutant is most frequently found in Lake St. Louis, Missouri?

What can I do if the air quality in Lake St. Louis, Missouri is poor?

What is the PM2.5 concentration in Lake St. Louis, Missouri right now?

What is the current level of PM10 in Lake St. Louis, Missouri?

What is the current level of carbon monoxide (CO) in Lake St. Louis, Missouri?

What is the current level of sulfur dioxide (SO2) in Lake St. Louis, Missouri?

What is the current level of ozone (O3) in Lake St. Louis, Missouri?

What is the current level of nitrogen dioxide (NO2) in Lake St. Louis, Missouri?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 concentration in Lake St. Louis, Missouri right now?

What is the current level of PM₁₀ in Lake St. Louis, Missouri?

What is the current level of sulfur dioxide (SO₂) in Lake St. Louis, Missouri?

What is the current level of ozone (O₃) in Lake St. Louis, Missouri?

What is the current level of nitrogen dioxide (NO₂) in Lake St. Louis, Missouri?