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

St. Peters, Missouri currently has a PM10 concentration of 32.258 μg/m3.

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

The current sulfur dioxide (SO2) concentration in St. Peters, Missouri is 1.447 ppb.

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

St. Peters, Missouri currently has an ozone (O3) concentration of 55.201 ppm.

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

The current level of nitrogen dioxide (NO2) in St. Peters, Missouri is 6.399 ppb.

Current air quality index in St. Peters, Missouri today

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

St. Peters, Missouri currently has a PM2.5 concentration of 9.202 μg/m3.

Stay updated with real-time air quality in St. Peters, 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

St. Peters, Missouri

Last updated: ... (Local time)

Common air pollutants in St. Peters, Missouri

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.20 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

32.26 μg/m³

155

255

425

605+

Ozone (O₃)

55.20 ppb

201

201+

Sulfur Dioxide (SO₂)

1.45 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.40 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.19 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

St. Peters, Missouri

Get Live Pollen Counts

St. Peters, Missouri

Scroll To Air Quality Map

Track live St. Peters, Missouri air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-21T00:00:00.000Z	43 \| good	5.813 \| good	27.331 \| good	45.975 \| good	1.208 \| good	12.333 \| good	0.417 \| good
2026-10-21T01:00:00.000Z	47 \| good	7.827 \| good	50.572 \| good	39.953 \| good	0.886 \| good	13.204 \| good	0.622 \| good
2026-10-21T02:00:00.000Z	54 \| moderate	11.048 \| good	52.285 \| good	30.684 \| good	0.935 \| good	19.196 \| good	0.642 \| good
2026-10-21T03:00:00.000Z	73 \| moderate	20.754 \| fine	91.166 \| fine	13.179 \| good	1.849 \| good	21.735 \| good	0.271 \| good
2026-10-21T04:00:00.000Z	58 \| moderate	12.614 \| fine	63.172 \| fine	24.848 \| good	0.945 \| good	31.172 \| good	0.599 \| good
2026-10-21T05:00:00.000Z	66 \| moderate	17.123 \| fine	77.526 \| fine	20.964 \| good	0.903 \| good	32.317 \| good	0.766 \| good
2026-10-21T06:00:00.000Z	64 \| moderate	15.645 \| fine	39.506 \| good	18.208 \| good	1.005 \| good	30.49 \| good	0.885 \| good
2026-10-21T07:00:00.000Z	62 \| moderate	15.248 \| fine	41.103 \| good	16.448 \| good	1.005 \| good	28.368 \| good	0.885 \| good
2026-10-21T08:00:00.000Z	62 \| moderate	14.812 \| fine	60.648 \| fine	16.302 \| good	1.002 \| good	24.142 \| good	0.885 \| good
2026-10-21T09:00:00.000Z	62 \| moderate	15.41 \| fine	65.822 \| fine	9.245 \| good	0.876 \| good	18.452 \| good	0.769 \| good
2026-10-21T10:00:00.000Z	56 \| moderate	12.135 \| fine	33.965 \| good	12.36 \| good	0.657 \| good	18.213 \| good	0.753 \| good
2026-10-21T11:00:00.000Z	44 \| good	8.106 \| good	32.852 \| good	7.75 \| good	0.897 \| good	10.029 \| good	0.718 \| good
2026-10-21T12:00:00.000Z	52 \| moderate	10.103 \| good	28.292 \| good	13.169 \| good	1.04 \| good	13.128 \| good	0.81 \| good
2026-10-21T13:00:00.000Z	44 \| good	8.353 \| good	47.06 \| good	10.214 \| good	1.026 \| good	14.278 \| good	0.815 \| good
2026-10-21T14:00:00.000Z	58 \| moderate	12.519 \| fine	62.574 \| fine	8.996 \| good	1.221 \| good	19.897 \| good	0.966 \| good
2026-10-21T15:00:00.000Z	69 \| moderate	18.982 \| fine	77.582 \| fine	10.425 \| good	1.214 \| good	16.757 \| good	0.698 \| good
2026-10-21T16:00:00.000Z	64 \| moderate	15.945 \| fine	54.221 \| good	19.945 \| good	0.891 \| good	14.055 \| good	0.516 \| good
2026-10-21T17:00:00.000Z	56 \| moderate	12.357 \| fine	51.566 \| good	24.974 \| good	4.534 \| good	12.694 \| good	0.407 \| good
2026-10-21T18:00:00.000Z	44 \| good	7.989 \| good	41.012 \| good	39.002 \| good	3.773 \| good	8.976 \| good	0.291 \| good
2026-10-21T19:00:00.000Z	44 \| good	7.803 \| good	40.316 \| good	42.338 \| good	1.816 \| good	9.473 \| good	0.294 \| good
2026-10-21T20:00:00.000Z	44 \| good	6.539 \| good	25.811 \| good	48.362 \| good	1.331 \| good	7.272 \| good	0.249 \| good
2026-10-21T21:00:00.000Z	48 \| good	6.458 \| good	23.101 \| good	51.703 \| good	1.208 \| good	5.896 \| good	0.248 \| good
2026-10-21T22:00:00.000Z	47 \| good	5.638 \| good	21.745 \| good	51.033 \| good	1.086 \| good	5.392 \| good	0.234 \| good
2026-10-21T23:00:00.000Z	45 \| good	5.209 \| good	33.135 \| good	49.325 \| good	0.942 \| good	7.63 \| good	0.234 \| good
2026-10-22T00:00:00.000Z	45 \| good	6.651 \| good	27.577 \| good	48.757 \| good	0.893 \| good	16.755 \| good	0.286 \| good
2026-10-22T01:00:00.000Z	45 \| good	8.115 \| good	29.734 \| good	49.267 \| good	0.897 \| good	30.945 \| good	0.622 \| good
2026-10-22T02:00:00.000Z	52 \| moderate	9.548 \| good	48.831 \| good	40.972 \| good	0.774 \| good	35.624 \| good	0.66 \| good
2026-10-22T03:00:00.000Z	38 \| good	7.484 \| good	33.12 \| good	21.638 \| good	3.118 \| good	38.169 \| good	0.427 \| good
2026-10-22T04:00:00.000Z	49 \| good	8.988 \| good	38.136 \| good	27.594 \| good	1.017 \| good	25.62 \| good	0.897 \| good
2026-10-22T05:00:00.000Z	42 \| good	6.317 \| good	44.733 \| good	16.664 \| good	0.811 \| good	22.97 \| good	0.915 \| good
2026-10-22T06:00:00.000Z	52 \| moderate	9.638 \| good	36.514 \| good	26.669 \| good	0.708 \| good	16.815 \| good	0.873 \| good
2026-10-22T07:00:00.000Z	56 \| moderate	11.751 \| good	35.205 \| good	19.368 \| good	0.717 \| good	15.507 \| good	0.873 \| good
2026-10-22T08:00:00.000Z	58 \| moderate	13.493 \| fine	34.817 \| good	18.452 \| good	0.721 \| good	15.627 \| good	0.82 \| good
2026-10-22T09:00:00.000Z	54 \| moderate	10.589 \| good	55.588 \| fine	9.21 \| good	0.722 \| good	17.095 \| good	0.767 \| good
2026-10-22T10:00:00.000Z	56 \| moderate	11.762 \| good	44.265 \| good	11.614 \| good	0.746 \| good	13.904 \| good	0.674 \| good
2026-10-22T11:00:00.000Z	44 \| good	8.384 \| good	42.797 \| good	6.489 \| good	0.664 \| good	17.001 \| good	0.713 \| good
2026-10-22T12:00:00.000Z	33 \| good	6.432 \| good	35.633 \| good	9.016 \| good	0.731 \| good	15.297 \| good	0.766 \| good
2026-10-22T13:00:00.000Z	46 \| good	7.382 \| good	49.934 \| good	5.538 \| good	0.717 \| good	13.586 \| good	0.736 \| good
2026-10-22T14:00:00.000Z	54 \| moderate	9.826 \| good	62.405 \| fine	8.155 \| good	0.739 \| good	20.055 \| good	0.823 \| good
2026-10-22T15:00:00.000Z	54 \| moderate	10.614 \| good	54.291 \| good	11.938 \| good	0.917 \| good	22.908 \| good	0.757 \| good
2026-10-22T16:00:00.000Z	58 \| moderate	10.373 \| good	68.541 \| fine	18.209 \| good	0.933 \| good	18.691 \| good	0.684 \| good
2026-10-22T17:00:00.000Z	66 \| moderate	15.339 \| fine	85.346 \| fine	26.38 \| good	2.981 \| good	15.595 \| good	0.517 \| good
2026-10-22T18:00:00.000Z	64 \| moderate	16.38 \| fine	76.603 \| fine	41.45 \| good	3.385 \| good	10.026 \| good	0.46 \| good
2026-10-22T19:00:00.000Z	67 \| moderate	18.265 \| fine	85.311 \| fine	48.46 \| good	2.986 \| good	7.095 \| good	0.37 \| good
2026-10-22T20:00:00.000Z	56 \| moderate	11.826 \| good	65.83 \| fine	52.805 \| good	1.721 \| good	6.85 \| good	0.193 \| good
2026-10-22T21:00:00.000Z	51 \| moderate	8.671 \| good	35.607 \| good	54.913 \| good	1.432 \| good	4.68 \| good	0.193 \| good
2026-10-22T22:00:00.000Z	61 \| moderate	7.481 \| good	38.837 \| good	58.197 \| fine	1.422 \| good	4.707 \| good	0.193 \| good
2026-10-22T23:00:00.000Z	49 \| good	9.204 \| good	33.369 \| good	49.649 \| good	1.49 \| good	6.519 \| good	0.193 \| good
2026-10-22T23:00:00.000Z	51 \| moderate	9.202 \| good	32.258 \| good	55.201 \| fine	1.447 \| good	6.399 \| good	0.193 \| good
2026-10-23T00:00:00.000Z	71 \| moderate	19.835 \| fine	87.65 \| fine	42.222 \| good	2.228 \| good	19.171 \| good	0.301 \| good
2026-10-23T01:00:00.000Z	75 \| moderate	21.844 \| fine	96.131 \| fine	26.868 \| good	2.415 \| good	26.762 \| good	0.349 \| good
2026-10-23T02:00:00.000Z	79 \| moderate	23.947 \| fine	104.474 \| fine	21.49 \| good	2.562 \| good	30.758 \| good	0.381 \| good
2026-10-23T03:00:00.000Z	77 \| moderate	23.358 \| fine	101.9 \| fine	18.058 \| good	2.659 \| good	33.823 \| good	0.408 \| good
2026-10-23T04:00:00.000Z	71 \| moderate	20.006 \| fine	88.557 \| fine	16.49 \| good	2.683 \| good	36.464 \| good	0.432 \| good
2026-10-23T05:00:00.000Z	67 \| moderate	17.649 \| fine	78.411 \| fine	15.197 \| good	2.587 \| good	37.077 \| good	0.441 \| good
2026-10-23T06:00:00.000Z	64 \| moderate	16.143 \| fine	72.02 \| fine	13.744 \| good	2.368 \| good	34.695 \| good	0.427 \| good
2026-10-23T07:00:00.000Z	62 \| moderate	15.038 \| fine	67.432 \| fine	11.596 \| good	2.153 \| good	31.046 \| good	0.4 \| good
2026-10-23T08:00:00.000Z	60 \| moderate	14.441 \| fine	64.989 \| fine	11.794 \| good	1.938 \| good	26.493 \| good	0.368 \| good
2026-10-23T09:00:00.000Z	62 \| moderate	14.615 \| fine	65.379 \| fine	11.474 \| good	1.724 \| good	22.104 \| good	0.34 \| good
2026-10-23T10:00:00.000Z	62 \| moderate	14.995 \| fine	67.007 \| fine	12.147 \| good	1.538 \| good	19.032 \| good	0.319 \| good
2026-10-23T11:00:00.000Z	64 \| moderate	16.272 \| fine	72.544 \| fine	9.719 \| good	1.395 \| good	17.22 \| good	0.305 \| good
2026-10-23T12:00:00.000Z	67 \| moderate	17.71 \| fine	78.404 \| fine	6.391 \| good	1.319 \| good	17.179 \| good	0.301 \| good
2026-10-23T13:00:00.000Z	73 \| moderate	20.676 \| fine	90.877 \| fine	9.631 \| good	1.3 \| good	17.503 \| good	0.314 \| good
2026-10-23T14:00:00.000Z	75 \| moderate	22.276 \| fine	97.141 \| fine	20.667 \| good	1.242 \| good	12.706 \| good	0.301 \| good
2026-10-23T15:00:00.000Z	69 \| moderate	19.407 \| fine	85.578 \| fine	30.507 \| good	1.356 \| good	9.448 \| good	0.268 \| good
2026-10-23T16:00:00.000Z	64 \| moderate	15.662 \| fine	69.63 \| fine	41.802 \| good	1.773 \| good	6.69 \| good	0.235 \| good
2026-10-23T17:00:00.000Z	56 \| moderate	11.926 \| good	53.029 \| good	49.636 \| good	2.355 \| good	4.359 \| good	0.207 \| good
2026-10-23T18:00:00.000Z	56 \| moderate	11.876 \| good	52.454 \| good	53.101 \| good	2.447 \| good	2.582 \| good	0.188 \| good
2026-10-23T19:00:00.000Z	56 \| moderate	11.993 \| good	54.125 \| good	56.051 \| fine	2.209 \| good	1.884 \| good	0.181 \| good
2026-10-23T20:00:00.000Z	61 \| moderate	11.956 \| good	53.869 \| good	58.182 \| fine	2.087 \| good	1.693 \| good	0.18 \| good
2026-10-23T21:00:00.000Z	64 \| moderate	11.756 \| good	52.104 \| good	59.058 \| fine	2.032 \| good	1.816 \| good	0.181 \| good
2026-10-23T22:00:00.000Z	62 \| moderate	14.624 \| fine	65.334 \| fine	53.57 \| good	1.956 \| good	2.71 \| good	0.187 \| good
2026-10-23T23:00:00.000Z	69 \| moderate	18.567 \| fine	81.623 \| fine	41.544 \| good	1.844 \| good	5.684 \| good	0.207 \| good
2026-10-24T00:00:00.000Z	73 \| moderate	20.741 \| fine	91.309 \| fine	31.99 \| good	1.775 \| good	8.716 \| good	0.227 \| good
2026-10-24T01:00:00.000Z	71 \| moderate	20.16 \| fine	88.177 \| fine	25.074 \| good	1.696 \| good	9.591 \| good	0.23 \| good
2026-10-24T02:00:00.000Z	67 \| moderate	17.938 \| fine	79.824 \| fine	25.585 \| good	1.61 \| good	9.687 \| good	0.229 \| good
2026-10-24T03:00:00.000Z	66 \| moderate	16.502 \| fine	73.694 \| fine	24.067 \| good	1.539 \| good	9.291 \| good	0.226 \| good
2026-10-24T04:00:00.000Z	62 \| moderate	15.065 \| fine	67.591 \| fine	25.17 \| good	1.485 \| good	8.76 \| good	0.223 \| good
2026-10-24T05:00:00.000Z	60 \| moderate	13.783 \| fine	61.812 \| fine	25.379 \| good	1.433 \| good	7.963 \| good	0.22 \| good
2026-10-24T06:00:00.000Z	58 \| moderate	13.477 \| fine	61.027 \| fine	23.916 \| good	1.38 \| good	7.109 \| good	0.217 \| good
2026-10-24T07:00:00.000Z	56 \| moderate	12.161 \| fine	54.498 \| good	20.48 \| good	1.332 \| good	6.583 \| good	0.215 \| good
2026-10-24T08:00:00.000Z	56 \| moderate	11.63 \| good	51.688 \| good	18.536 \| good	1.284 \| good	6.376 \| good	0.215 \| good
2026-10-24T09:00:00.000Z	56 \| moderate	11.506 \| good	50.943 \| good	17.023 \| good	1.24 \| good	6.429 \| good	0.216 \| good
2026-10-24T10:00:00.000Z	56 \| moderate	11.532 \| good	50.962 \| good	13.926 \| good	1.207 \| good	6.645 \| good	0.218 \| good
2026-10-24T11:00:00.000Z	56 \| moderate	12.151 \| fine	54.673 \| good	12.01 \| good	1.194 \| good	7.044 \| good	0.221 \| good
2026-10-24T12:00:00.000Z	52 \| moderate	10.328 \| good	45.512 \| good	11.207 \| good	1.21 \| good	8.244 \| good	0.228 \| good
2026-10-24T13:00:00.000Z	54 \| moderate	11.372 \| good	50.418 \| good	14.007 \| good	1.239 \| good	9.742 \| good	0.242 \| good
2026-10-24T14:00:00.000Z	60 \| moderate	13.71 \| fine	61.2 \| fine	22.78 \| good	1.23 \| good	8.194 \| good	0.25 \| good
2026-10-24T15:00:00.000Z	56 \| moderate	11.91 \| good	53.485 \| good	30.761 \| good	1.364 \| good	6.397 \| good	0.235 \| good
2026-10-24T16:00:00.000Z	52 \| moderate	9.992 \| good	44.498 \| good	38.335 \| good	1.568 \| good	4.912 \| good	0.218 \| good
2026-10-24T17:00:00.000Z	41 \| good	7.132 \| good	31.72 \| good	44.073 \| good	1.803 \| good	3.757 \| good	0.204 \| good
2026-10-24T18:00:00.000Z	44 \| good	7.348 \| good	32.225 \| good	47.976 \| good	1.947 \| good	2.618 \| good	0.188 \| good
2026-10-24T19:00:00.000Z	49 \| good	9.14 \| good	41.086 \| good	51.941 \| good	2.078 \| good	2.029 \| good	0.178 \| good
2026-10-24T20:00:00.000Z	50 \| good	8.27 \| good	36.464 \| good	54.004 \| good	2.104 \| good	1.828 \| good	0.173 \| good
2026-10-24T21:00:00.000Z	49 \| good	8.935 \| good	39.766 \| good	53.032 \| good	2.059 \| good	1.92 \| good	0.173 \| good
2026-10-24T22:00:00.000Z	54 \| moderate	11.333 \| good	50.219 \| good	50.183 \| good	1.944 \| good	2.9 \| good	0.18 \| good
2026-10-24T23:00:00.000Z	56 \| moderate	12.496 \| fine	56.336 \| fine	43.593 \| good	1.797 \| good	5.92 \| good	0.2 \| good

St. Peters

Empower business decisions with accurate air quality data

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

0.20ppm

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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Frequently asked questions

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

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

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

St. Peters, Missouri experienced its worst air quality at 07:00:00, 2026-10-22.

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

The best air quality in St. Peters, Missouri was observed at 12:00:00 on 2026-10-22.

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

The air quality in St. Peters, Missouri right now is Moderate, with an AQI of 51.

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

In St. Peters, Missouri, O3 is the most frequently found pollutant.

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

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

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

St. Peters, Missouri currently has a PM_2.5 concentration of 9.202 μg/m³.

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

St. Peters, Missouri currently has a PM₁₀ concentration of 32.258 μg/m³.

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

The current carbon monoxide (CO) level in St. Peters, Missouri is 0.193 ppm.

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

The current sulfur dioxide (SO₂) concentration in St. Peters, Missouri is 1.447 ppb.

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

St. Peters, Missouri currently has an ozone (O₃) concentration of 55.201 ppm.

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

The current level of nitrogen dioxide (NO₂) in St. Peters, Missouri is 6.399 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-21T00:00:00.000Z	43 \| good	5.813 \| good	27.331 \| good	45.975 \| good	1.208 \| good	12.333 \| good	0.417 \| good
2026-10-21T01:00:00.000Z	47 \| good	7.827 \| good	50.572 \| good	39.953 \| good	0.886 \| good	13.204 \| good	0.622 \| good
2026-10-21T02:00:00.000Z	54 \| moderate	11.048 \| good	52.285 \| good	30.684 \| good	0.935 \| good	19.196 \| good	0.642 \| good
2026-10-21T03:00:00.000Z	73 \| moderate	20.754 \| fine	91.166 \| fine	13.179 \| good	1.849 \| good	21.735 \| good	0.271 \| good
2026-10-21T04:00:00.000Z	58 \| moderate	12.614 \| fine	63.172 \| fine	24.848 \| good	0.945 \| good	31.172 \| good	0.599 \| good
2026-10-21T05:00:00.000Z	66 \| moderate	17.123 \| fine	77.526 \| fine	20.964 \| good	0.903 \| good	32.317 \| good	0.766 \| good
2026-10-21T06:00:00.000Z	64 \| moderate	15.645 \| fine	39.506 \| good	18.208 \| good	1.005 \| good	30.49 \| good	0.885 \| good
2026-10-21T07:00:00.000Z	62 \| moderate	15.248 \| fine	41.103 \| good	16.448 \| good	1.005 \| good	28.368 \| good	0.885 \| good
2026-10-21T08:00:00.000Z	62 \| moderate	14.812 \| fine	60.648 \| fine	16.302 \| good	1.002 \| good	24.142 \| good	0.885 \| good
2026-10-21T09:00:00.000Z	62 \| moderate	15.41 \| fine	65.822 \| fine	9.245 \| good	0.876 \| good	18.452 \| good	0.769 \| good
2026-10-21T10:00:00.000Z	56 \| moderate	12.135 \| fine	33.965 \| good	12.36 \| good	0.657 \| good	18.213 \| good	0.753 \| good
2026-10-21T11:00:00.000Z	44 \| good	8.106 \| good	32.852 \| good	7.75 \| good	0.897 \| good	10.029 \| good	0.718 \| good
2026-10-21T12:00:00.000Z	52 \| moderate	10.103 \| good	28.292 \| good	13.169 \| good	1.04 \| good	13.128 \| good	0.81 \| good
2026-10-21T13:00:00.000Z	44 \| good	8.353 \| good	47.06 \| good	10.214 \| good	1.026 \| good	14.278 \| good	0.815 \| good
2026-10-21T14:00:00.000Z	58 \| moderate	12.519 \| fine	62.574 \| fine	8.996 \| good	1.221 \| good	19.897 \| good	0.966 \| good
2026-10-21T15:00:00.000Z	69 \| moderate	18.982 \| fine	77.582 \| fine	10.425 \| good	1.214 \| good	16.757 \| good	0.698 \| good
2026-10-21T16:00:00.000Z	64 \| moderate	15.945 \| fine	54.221 \| good	19.945 \| good	0.891 \| good	14.055 \| good	0.516 \| good
2026-10-21T17:00:00.000Z	56 \| moderate	12.357 \| fine	51.566 \| good	24.974 \| good	4.534 \| good	12.694 \| good	0.407 \| good
2026-10-21T18:00:00.000Z	44 \| good	7.989 \| good	41.012 \| good	39.002 \| good	3.773 \| good	8.976 \| good	0.291 \| good
2026-10-21T19:00:00.000Z	44 \| good	7.803 \| good	40.316 \| good	42.338 \| good	1.816 \| good	9.473 \| good	0.294 \| good
2026-10-21T20:00:00.000Z	44 \| good	6.539 \| good	25.811 \| good	48.362 \| good	1.331 \| good	7.272 \| good	0.249 \| good
2026-10-21T21:00:00.000Z	48 \| good	6.458 \| good	23.101 \| good	51.703 \| good	1.208 \| good	5.896 \| good	0.248 \| good
2026-10-21T22:00:00.000Z	47 \| good	5.638 \| good	21.745 \| good	51.033 \| good	1.086 \| good	5.392 \| good	0.234 \| good
2026-10-21T23:00:00.000Z	45 \| good	5.209 \| good	33.135 \| good	49.325 \| good	0.942 \| good	7.63 \| good	0.234 \| good
2026-10-22T00:00:00.000Z	45 \| good	6.651 \| good	27.577 \| good	48.757 \| good	0.893 \| good	16.755 \| good	0.286 \| good
2026-10-22T01:00:00.000Z	45 \| good	8.115 \| good	29.734 \| good	49.267 \| good	0.897 \| good	30.945 \| good	0.622 \| good
2026-10-22T02:00:00.000Z	52 \| moderate	9.548 \| good	48.831 \| good	40.972 \| good	0.774 \| good	35.624 \| good	0.66 \| good
2026-10-22T03:00:00.000Z	38 \| good	7.484 \| good	33.12 \| good	21.638 \| good	3.118 \| good	38.169 \| good	0.427 \| good
2026-10-22T04:00:00.000Z	49 \| good	8.988 \| good	38.136 \| good	27.594 \| good	1.017 \| good	25.62 \| good	0.897 \| good
2026-10-22T05:00:00.000Z	42 \| good	6.317 \| good	44.733 \| good	16.664 \| good	0.811 \| good	22.97 \| good	0.915 \| good
2026-10-22T06:00:00.000Z	52 \| moderate	9.638 \| good	36.514 \| good	26.669 \| good	0.708 \| good	16.815 \| good	0.873 \| good
2026-10-22T07:00:00.000Z	56 \| moderate	11.751 \| good	35.205 \| good	19.368 \| good	0.717 \| good	15.507 \| good	0.873 \| good
2026-10-22T08:00:00.000Z	58 \| moderate	13.493 \| fine	34.817 \| good	18.452 \| good	0.721 \| good	15.627 \| good	0.82 \| good
2026-10-22T09:00:00.000Z	54 \| moderate	10.589 \| good	55.588 \| fine	9.21 \| good	0.722 \| good	17.095 \| good	0.767 \| good
2026-10-22T10:00:00.000Z	56 \| moderate	11.762 \| good	44.265 \| good	11.614 \| good	0.746 \| good	13.904 \| good	0.674 \| good
2026-10-22T11:00:00.000Z	44 \| good	8.384 \| good	42.797 \| good	6.489 \| good	0.664 \| good	17.001 \| good	0.713 \| good
2026-10-22T12:00:00.000Z	33 \| good	6.432 \| good	35.633 \| good	9.016 \| good	0.731 \| good	15.297 \| good	0.766 \| good
2026-10-22T13:00:00.000Z	46 \| good	7.382 \| good	49.934 \| good	5.538 \| good	0.717 \| good	13.586 \| good	0.736 \| good
2026-10-22T14:00:00.000Z	54 \| moderate	9.826 \| good	62.405 \| fine	8.155 \| good	0.739 \| good	20.055 \| good	0.823 \| good
2026-10-22T15:00:00.000Z	54 \| moderate	10.614 \| good	54.291 \| good	11.938 \| good	0.917 \| good	22.908 \| good	0.757 \| good
2026-10-22T16:00:00.000Z	58 \| moderate	10.373 \| good	68.541 \| fine	18.209 \| good	0.933 \| good	18.691 \| good	0.684 \| good
2026-10-22T17:00:00.000Z	66 \| moderate	15.339 \| fine	85.346 \| fine	26.38 \| good	2.981 \| good	15.595 \| good	0.517 \| good
2026-10-22T18:00:00.000Z	64 \| moderate	16.38 \| fine	76.603 \| fine	41.45 \| good	3.385 \| good	10.026 \| good	0.46 \| good
2026-10-22T19:00:00.000Z	67 \| moderate	18.265 \| fine	85.311 \| fine	48.46 \| good	2.986 \| good	7.095 \| good	0.37 \| good
2026-10-22T20:00:00.000Z	56 \| moderate	11.826 \| good	65.83 \| fine	52.805 \| good	1.721 \| good	6.85 \| good	0.193 \| good
2026-10-22T21:00:00.000Z	51 \| moderate	8.671 \| good	35.607 \| good	54.913 \| good	1.432 \| good	4.68 \| good	0.193 \| good
2026-10-22T22:00:00.000Z	61 \| moderate	7.481 \| good	38.837 \| good	58.197 \| fine	1.422 \| good	4.707 \| good	0.193 \| good
2026-10-22T23:00:00.000Z	49 \| good	9.204 \| good	33.369 \| good	49.649 \| good	1.49 \| good	6.519 \| good	0.193 \| good
2026-10-22T23:00:00.000Z	51 \| moderate	9.202 \| good	32.258 \| good	55.201 \| fine	1.447 \| good	6.399 \| good	0.193 \| good
2026-10-23T00:00:00.000Z	71 \| moderate	19.835 \| fine	87.65 \| fine	42.222 \| good	2.228 \| good	19.171 \| good	0.301 \| good
2026-10-23T01:00:00.000Z	75 \| moderate	21.844 \| fine	96.131 \| fine	26.868 \| good	2.415 \| good	26.762 \| good	0.349 \| good
2026-10-23T02:00:00.000Z	79 \| moderate	23.947 \| fine	104.474 \| fine	21.49 \| good	2.562 \| good	30.758 \| good	0.381 \| good
2026-10-23T03:00:00.000Z	77 \| moderate	23.358 \| fine	101.9 \| fine	18.058 \| good	2.659 \| good	33.823 \| good	0.408 \| good
2026-10-23T04:00:00.000Z	71 \| moderate	20.006 \| fine	88.557 \| fine	16.49 \| good	2.683 \| good	36.464 \| good	0.432 \| good
2026-10-23T05:00:00.000Z	67 \| moderate	17.649 \| fine	78.411 \| fine	15.197 \| good	2.587 \| good	37.077 \| good	0.441 \| good
2026-10-23T06:00:00.000Z	64 \| moderate	16.143 \| fine	72.02 \| fine	13.744 \| good	2.368 \| good	34.695 \| good	0.427 \| good
2026-10-23T07:00:00.000Z	62 \| moderate	15.038 \| fine	67.432 \| fine	11.596 \| good	2.153 \| good	31.046 \| good	0.4 \| good
2026-10-23T08:00:00.000Z	60 \| moderate	14.441 \| fine	64.989 \| fine	11.794 \| good	1.938 \| good	26.493 \| good	0.368 \| good
2026-10-23T09:00:00.000Z	62 \| moderate	14.615 \| fine	65.379 \| fine	11.474 \| good	1.724 \| good	22.104 \| good	0.34 \| good
2026-10-23T10:00:00.000Z	62 \| moderate	14.995 \| fine	67.007 \| fine	12.147 \| good	1.538 \| good	19.032 \| good	0.319 \| good
2026-10-23T11:00:00.000Z	64 \| moderate	16.272 \| fine	72.544 \| fine	9.719 \| good	1.395 \| good	17.22 \| good	0.305 \| good
2026-10-23T12:00:00.000Z	67 \| moderate	17.71 \| fine	78.404 \| fine	6.391 \| good	1.319 \| good	17.179 \| good	0.301 \| good
2026-10-23T13:00:00.000Z	73 \| moderate	20.676 \| fine	90.877 \| fine	9.631 \| good	1.3 \| good	17.503 \| good	0.314 \| good
2026-10-23T14:00:00.000Z	75 \| moderate	22.276 \| fine	97.141 \| fine	20.667 \| good	1.242 \| good	12.706 \| good	0.301 \| good
2026-10-23T15:00:00.000Z	69 \| moderate	19.407 \| fine	85.578 \| fine	30.507 \| good	1.356 \| good	9.448 \| good	0.268 \| good
2026-10-23T16:00:00.000Z	64 \| moderate	15.662 \| fine	69.63 \| fine	41.802 \| good	1.773 \| good	6.69 \| good	0.235 \| good
2026-10-23T17:00:00.000Z	56 \| moderate	11.926 \| good	53.029 \| good	49.636 \| good	2.355 \| good	4.359 \| good	0.207 \| good
2026-10-23T18:00:00.000Z	56 \| moderate	11.876 \| good	52.454 \| good	53.101 \| good	2.447 \| good	2.582 \| good	0.188 \| good
2026-10-23T19:00:00.000Z	56 \| moderate	11.993 \| good	54.125 \| good	56.051 \| fine	2.209 \| good	1.884 \| good	0.181 \| good
2026-10-23T20:00:00.000Z	61 \| moderate	11.956 \| good	53.869 \| good	58.182 \| fine	2.087 \| good	1.693 \| good	0.18 \| good
2026-10-23T21:00:00.000Z	64 \| moderate	11.756 \| good	52.104 \| good	59.058 \| fine	2.032 \| good	1.816 \| good	0.181 \| good
2026-10-23T22:00:00.000Z	62 \| moderate	14.624 \| fine	65.334 \| fine	53.57 \| good	1.956 \| good	2.71 \| good	0.187 \| good
2026-10-23T23:00:00.000Z	69 \| moderate	18.567 \| fine	81.623 \| fine	41.544 \| good	1.844 \| good	5.684 \| good	0.207 \| good
2026-10-24T00:00:00.000Z	73 \| moderate	20.741 \| fine	91.309 \| fine	31.99 \| good	1.775 \| good	8.716 \| good	0.227 \| good
2026-10-24T01:00:00.000Z	71 \| moderate	20.16 \| fine	88.177 \| fine	25.074 \| good	1.696 \| good	9.591 \| good	0.23 \| good
2026-10-24T02:00:00.000Z	67 \| moderate	17.938 \| fine	79.824 \| fine	25.585 \| good	1.61 \| good	9.687 \| good	0.229 \| good
2026-10-24T03:00:00.000Z	66 \| moderate	16.502 \| fine	73.694 \| fine	24.067 \| good	1.539 \| good	9.291 \| good	0.226 \| good
2026-10-24T04:00:00.000Z	62 \| moderate	15.065 \| fine	67.591 \| fine	25.17 \| good	1.485 \| good	8.76 \| good	0.223 \| good
2026-10-24T05:00:00.000Z	60 \| moderate	13.783 \| fine	61.812 \| fine	25.379 \| good	1.433 \| good	7.963 \| good	0.22 \| good
2026-10-24T06:00:00.000Z	58 \| moderate	13.477 \| fine	61.027 \| fine	23.916 \| good	1.38 \| good	7.109 \| good	0.217 \| good
2026-10-24T07:00:00.000Z	56 \| moderate	12.161 \| fine	54.498 \| good	20.48 \| good	1.332 \| good	6.583 \| good	0.215 \| good
2026-10-24T08:00:00.000Z	56 \| moderate	11.63 \| good	51.688 \| good	18.536 \| good	1.284 \| good	6.376 \| good	0.215 \| good
2026-10-24T09:00:00.000Z	56 \| moderate	11.506 \| good	50.943 \| good	17.023 \| good	1.24 \| good	6.429 \| good	0.216 \| good
2026-10-24T10:00:00.000Z	56 \| moderate	11.532 \| good	50.962 \| good	13.926 \| good	1.207 \| good	6.645 \| good	0.218 \| good
2026-10-24T11:00:00.000Z	56 \| moderate	12.151 \| fine	54.673 \| good	12.01 \| good	1.194 \| good	7.044 \| good	0.221 \| good
2026-10-24T12:00:00.000Z	52 \| moderate	10.328 \| good	45.512 \| good	11.207 \| good	1.21 \| good	8.244 \| good	0.228 \| good
2026-10-24T13:00:00.000Z	54 \| moderate	11.372 \| good	50.418 \| good	14.007 \| good	1.239 \| good	9.742 \| good	0.242 \| good
2026-10-24T14:00:00.000Z	60 \| moderate	13.71 \| fine	61.2 \| fine	22.78 \| good	1.23 \| good	8.194 \| good	0.25 \| good
2026-10-24T15:00:00.000Z	56 \| moderate	11.91 \| good	53.485 \| good	30.761 \| good	1.364 \| good	6.397 \| good	0.235 \| good
2026-10-24T16:00:00.000Z	52 \| moderate	9.992 \| good	44.498 \| good	38.335 \| good	1.568 \| good	4.912 \| good	0.218 \| good
2026-10-24T17:00:00.000Z	41 \| good	7.132 \| good	31.72 \| good	44.073 \| good	1.803 \| good	3.757 \| good	0.204 \| good
2026-10-24T18:00:00.000Z	44 \| good	7.348 \| good	32.225 \| good	47.976 \| good	1.947 \| good	2.618 \| good	0.188 \| good
2026-10-24T19:00:00.000Z	49 \| good	9.14 \| good	41.086 \| good	51.941 \| good	2.078 \| good	2.029 \| good	0.178 \| good
2026-10-24T20:00:00.000Z	50 \| good	8.27 \| good	36.464 \| good	54.004 \| good	2.104 \| good	1.828 \| good	0.173 \| good
2026-10-24T21:00:00.000Z	49 \| good	8.935 \| good	39.766 \| good	53.032 \| good	2.059 \| good	1.92 \| good	0.173 \| good
2026-10-24T22:00:00.000Z	54 \| moderate	11.333 \| good	50.219 \| good	50.183 \| good	1.944 \| good	2.9 \| good	0.18 \| good
2026-10-24T23:00:00.000Z	56 \| moderate	12.496 \| fine	56.336 \| fine	43.593 \| good	1.797 \| good	5.92 \| good	0.2 \| good

Current air quality index in St. Peters, Missouri today

Common air pollutants in St. Peters, Missouri

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live St. Peters, Missouri air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

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Dardenne Prairie, Missouri

St. Charles, Missouri

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Chesterfield, Missouri

Bridgeton, Missouri

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Air quality levels in US

Frequently asked questions

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

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

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

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

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

What is the current level of nitrogen dioxide (NO2) in St. Peters, 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 St. Peters, Missouri right now?

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

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

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

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