What is the current concentration of PM10 in Maryland Heights, Missouri?

The current PM10 concentration at Maryland Heights, Missouri is 65.991 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Maryland Heights, Missouri?

The current sulfur dioxide (SO2) concentration at Maryland Heights, Missouri is 0.664 ppb.

What is the current concentration of ozone (O3) in Maryland Heights, Missouri?

The current ozone (O3) concentration at Maryland Heights, Missouri is 8.867 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Maryland Heights, Missouri?

The current nitrogen dioxide (NO2) concentration at Maryland Heights, Missouri is 7.93 ppb.

Maryland Heights, Missouri live air quality index now

Q: What is the current concentration of PM2.5 in Maryland Heights, Missouri?

The current PM2.5 concentration at Maryland Heights, Missouri is 16.238 μg/m3.

Stay updated with real-time air quality in Maryland Heights, 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

Maryland Heights, Missouri

Last updated: ... (Local time)

Major air pollutants in Maryland Heights, Missouri

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

16.24 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

65.99 μg/m³

155

255

425

605+

Ozone (O₃)

8.87 ppb

201

201+

Sulfur Dioxide (SO₂)

0.66 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.93 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Maryland Heights, Missouri

Get Live Pollen Counts

Maryland Heights, Missouri

Scroll To Air Quality Map

Track live Maryland Heights, Missouri air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T11:00:00.000Z	49 \| good	9.041 \| good	36.76 \| good	7.47 \| good	1.27 \| good	30.779 \| good	0.322 \| good
2025-12-05T12:00:00.000Z	58 \| moderate	12.648 \| fine	52.924 \| good	5.47 \| good	1.014 \| good	31.629 \| good	0.381 \| good
2025-12-05T13:00:00.000Z	58 \| moderate	13.442 \| fine	56.934 \| fine	5.016 \| good	0.716 \| good	30.258 \| good	0.439 \| good
2025-12-05T14:00:00.000Z	60 \| moderate	14.186 \| fine	52.507 \| good	7.689 \| good	1.391 \| good	27.164 \| good	0.512 \| good
2025-12-05T15:00:00.000Z	62 \| moderate	15.301 \| fine	65.823 \| fine	8.241 \| good	2.131 \| good	22.944 \| good	0.411 \| good
2025-12-05T16:00:00.000Z	66 \| moderate	16.894 \| fine	67.829 \| fine	12.596 \| good	0.39 \| good	18.251 \| good	0.351 \| good
2025-12-05T17:00:00.000Z	66 \| moderate	17.03 \| fine	72.632 \| fine	14.16 \| good	1.048 \| good	15.756 \| good	0.406 \| good
2025-12-05T18:00:00.000Z	64 \| moderate	16.385 \| fine	65.482 \| fine	18.516 \| good	2.007 \| good	14.113 \| good	0.347 \| good
2025-12-05T19:00:00.000Z	64 \| moderate	16.146 \| fine	63.703 \| fine	17.395 \| good	0.961 \| good	11.954 \| good	0.312 \| good
2025-12-05T20:00:00.000Z	58 \| moderate	13.31 \| fine	56.392 \| fine	23.577 \| good	1.424 \| good	11.892 \| good	0.314 \| good
2025-12-05T21:00:00.000Z	58 \| moderate	12.78 \| fine	49.865 \| good	22.905 \| good	1.612 \| good	11.381 \| good	0.312 \| good
2025-12-05T22:00:00.000Z	52 \| moderate	9.997 \| good	40.559 \| good	21.198 \| good	0.86 \| good	14.675 \| good	0.314 \| good
2025-12-05T23:00:00.000Z	49 \| good	9.129 \| good	42.757 \| good	17.38 \| good	0.621 \| good	17.704 \| good	0.404 \| good
2025-12-06T00:00:00.000Z	49 \| good	9.35 \| good	38.376 \| good	15.847 \| good	0.731 \| good	18.627 \| good	0.441 \| good
2025-12-06T01:00:00.000Z	49 \| good	8.894 \| good	39.197 \| good	18.986 \| good	0.665 \| good	19.751 \| good	0.406 \| good
2025-12-06T02:00:00.000Z	49 \| good	8.664 \| good	36.231 \| good	18.017 \| good	1.427 \| good	21.391 \| good	0.406 \| good
2025-12-06T03:00:00.000Z	52 \| moderate	9.895 \| good	42.73 \| good	16.722 \| good	1.433 \| good	15.223 \| good	0.292 \| good
2025-12-06T04:00:00.000Z	54 \| moderate	10.525 \| good	44.766 \| good	19.007 \| good	0.975 \| good	15.056 \| good	0.292 \| good
2025-12-06T05:00:00.000Z	52 \| moderate	10.199 \| good	42.04 \| good	16.367 \| good	0.973 \| good	13.834 \| good	0.327 \| good
2025-12-06T06:00:00.000Z	52 \| moderate	9.595 \| good	34.922 \| good	15.487 \| good	0.857 \| good	11.404 \| good	0.234 \| good
2025-12-06T07:00:00.000Z	52 \| moderate	9.848 \| good	37.879 \| good	14.477 \| good	0.855 \| good	11.347 \| good	0.229 \| good
2025-12-06T08:00:00.000Z	52 \| moderate	9.923 \| good	35.82 \| good	14.888 \| good	0.855 \| good	11.275 \| good	0.229 \| good
2025-12-06T09:00:00.000Z	54 \| moderate	10.611 \| good	42.649 \| good	16.078 \| good	0.616 \| good	8.995 \| good	0.229 \| good
2025-12-06T10:00:00.000Z	54 \| moderate	10.894 \| good	47.149 \| good	12.522 \| good	0.556 \| good	8.261 \| good	0.229 \| good
2025-12-06T11:00:00.000Z	54 \| moderate	11.413 \| good	49.902 \| good	10.794 \| good	0.517 \| good	10.359 \| good	0.264 \| good
2025-12-06T12:00:00.000Z	56 \| moderate	12.428 \| fine	47.123 \| good	9.691 \| good	0.446 \| good	12.049 \| good	0.229 \| good
2025-12-06T13:00:00.000Z	60 \| moderate	14.13 \| fine	46.815 \| good	7.915 \| good	0.419 \| good	12.925 \| good	0.287 \| good
2025-12-06T14:00:00.000Z	54 \| moderate	11.464 \| good	43.463 \| good	5.546 \| good	0.466 \| good	11.759 \| good	0.347 \| good
2025-12-06T15:00:00.000Z	56 \| moderate	11.601 \| good	47.567 \| good	7.442 \| good	0.532 \| good	9.286 \| good	0.287 \| good
2025-12-06T16:00:00.000Z	56 \| moderate	12.104 \| fine	43.333 \| good	10.222 \| good	0.536 \| good	7.764 \| good	0.289 \| good
2025-12-06T17:00:00.000Z	54 \| moderate	11.029 \| good	31.798 \| good	11.775 \| good	1.266 \| good	8.376 \| good	0.289 \| good
2025-12-06T18:00:00.000Z	56 \| moderate	11.9 \| good	43.02 \| good	15.249 \| good	1.868 \| good	7.892 \| good	0.289 \| good
2025-12-06T19:00:00.000Z	56 \| moderate	11.856 \| good	43.172 \| good	18.666 \| good	6.563 \| good	8.361 \| good	0.292 \| good
2025-12-06T20:00:00.000Z	54 \| moderate	10.695 \| good	35.228 \| good	21.101 \| good	3.605 \| good	9.68 \| good	0.309 \| good
2025-12-06T21:00:00.000Z	54 \| moderate	11.423 \| good	43.872 \| good	23.613 \| good	1.374 \| good	8.694 \| good	0.252 \| good
2025-12-06T22:00:00.000Z	54 \| moderate	10.772 \| good	40.394 \| good	15.113 \| good	1.094 \| good	12.002 \| good	0.347 \| good
2025-12-06T23:00:00.000Z	49 \| good	8.638 \| good	33.555 \| good	15.841 \| good	0.414 \| good	15.703 \| good	0.349 \| good
2025-12-07T00:00:00.000Z	54 \| moderate	10.62 \| good	45.152 \| good	16.912 \| good	0.933 \| good	17.522 \| good	0.349 \| good
2025-12-07T01:00:00.000Z	54 \| moderate	10.955 \| good	53.301 \| good	18.557 \| good	1.108 \| good	13.244 \| good	0.289 \| good
2025-12-07T02:00:00.000Z	52 \| moderate	9.553 \| good	42.338 \| good	17.095 \| good	1.065 \| good	10.361 \| good	0.294 \| good
2025-12-07T03:00:00.000Z	54 \| moderate	11.015 \| good	48.592 \| good	13.447 \| good	0.787 \| good	9.494 \| good	0.257 \| good
2025-12-07T04:00:00.000Z	52 \| moderate	10.467 \| good	49.029 \| good	17.32 \| good	0.77 \| good	9.5 \| good	0.257 \| good
2025-12-07T05:00:00.000Z	60 \| moderate	13.505 \| fine	51.938 \| good	17.151 \| good	0.924 \| good	11.017 \| good	0.294 \| good
2025-12-07T06:00:00.000Z	60 \| moderate	13.882 \| fine	52.023 \| good	16.489 \| good	0.91 \| good	11.045 \| good	0.289 \| good
2025-12-07T07:00:00.000Z	58 \| moderate	13.363 \| fine	51.357 \| good	14.822 \| good	0.908 \| good	11.074 \| good	0.294 \| good
2025-12-07T08:00:00.000Z	64 \| moderate	16.282 \| fine	56.447 \| fine	16.289 \| good	0.641 \| good	9.579 \| good	0.214 \| good
2025-12-07T09:00:00.000Z	64 \| moderate	16.214 \| fine	63.213 \| fine	9.346 \| good	0.633 \| good	9.544 \| good	0.257 \| good
2025-12-07T10:00:00.000Z	64 \| moderate	16.238 \| fine	65.991 \| fine	8.867 \| good	0.664 \| good	7.93 \| good	0.255 \| good
2025-12-07T11:00:00.000Z	67 \| moderate	18.099 \| fine	80.221 \| fine	2.873 \| good	0.763 \| good	8.358 \| good	0.212 \| good
2025-12-07T12:00:00.000Z	67 \| moderate	17.772 \| fine	78.569 \| fine	3.228 \| good	0.805 \| good	9.326 \| good	0.214 \| good
2025-12-07T13:00:00.000Z	69 \| moderate	19.459 \| fine	86.037 \| fine	2.246 \| good	0.885 \| good	11.113 \| good	0.246 \| good
2025-12-07T14:00:00.000Z	73 \| moderate	20.782 \| fine	91.393 \| fine	6.201 \| good	0.965 \| good	12.9 \| good	0.277 \| good
2025-12-07T15:00:00.000Z	73 \| moderate	20.918 \| fine	91.932 \| fine	14.859 \| good	1.045 \| good	14.687 \| good	0.309 \| good
2025-12-07T16:00:00.000Z	71 \| moderate	19.863 \| fine	87.286 \| fine	16.628 \| good	0.938 \| good	11.795 \| good	0.282 \| good
2025-12-07T17:00:00.000Z	75 \| moderate	21.573 \| fine	94.314 \| fine	13.771 \| good	0.831 \| good	8.903 \| good	0.255 \| good
2025-12-07T18:00:00.000Z	77 \| moderate	23.174 \| fine	101.229 \| fine	15.337 \| good	0.724 \| good	6.011 \| good	0.228 \| good
2025-12-07T19:00:00.000Z	71 \| moderate	19.637 \| fine	86.624 \| fine	19.147 \| good	0.916 \| good	6.673 \| good	0.229 \| good
2025-12-07T20:00:00.000Z	64 \| moderate	16.137 \| fine	72.209 \| fine	19.096 \| good	1.108 \| good	7.336 \| good	0.23 \| good
2025-12-07T21:00:00.000Z	56 \| moderate	11.552 \| good	51.189 \| good	18.721 \| good	1.3 \| good	7.999 \| good	0.23 \| good
2025-12-07T22:00:00.000Z	44 \| good	8.263 \| good	36.199 \| good	20.604 \| good	1.188 \| good	7.631 \| good	0.225 \| good
2025-12-07T23:00:00.000Z	44 \| good	8.416 \| good	36.683 \| good	21.399 \| good	1.077 \| good	7.263 \| good	0.22 \| good
2025-12-08T00:00:00.000Z	44 \| good	7.91 \| good	34.681 \| good	20.385 \| good	0.965 \| good	6.896 \| good	0.214 \| good
2025-12-08T01:00:00.000Z	38 \| good	6.935 \| good	30.87 \| good	17.928 \| good	0.897 \| good	6.156 \| good	0.21 \| good
2025-12-08T02:00:00.000Z	44 \| good	7.572 \| good	33.089 \| good	12.645 \| good	0.83 \| good	5.416 \| good	0.206 \| good
2025-12-08T03:00:00.000Z	44 \| good	7.715 \| good	34.001 \| good	13.747 \| good	0.762 \| good	4.676 \| good	0.202 \| good
2025-12-08T04:00:00.000Z	38 \| good	7.483 \| good	33.053 \| good	15.868 \| good	0.754 \| good	4.513 \| good	0.201 \| good
2025-12-08T05:00:00.000Z	49 \| good	8.582 \| good	37.36 \| good	18.168 \| good	0.746 \| good	4.35 \| good	0.2 \| good
2025-12-08T06:00:00.000Z	44 \| good	7.668 \| good	33.644 \| good	18.19 \| good	0.738 \| good	4.188 \| good	0.199 \| good
2025-12-08T07:00:00.000Z	38 \| good	6.665 \| good	29.5 \| good	16.565 \| good	0.725 \| good	4.115 \| good	0.197 \| good
2025-12-08T08:00:00.000Z	38 \| good	6.865 \| good	30.372 \| good	14.334 \| good	0.713 \| good	4.043 \| good	0.195 \| good
2025-12-08T09:00:00.000Z	44 \| good	7.915 \| good	34.818 \| good	15.041 \| good	0.7 \| good	3.971 \| good	0.193 \| good
2025-12-08T10:00:00.000Z	49 \| good	9.045 \| good	40.046 \| good	11.593 \| good	0.706 \| good	4.234 \| good	0.193 \| good
2025-12-08T11:00:00.000Z	44 \| good	7.905 \| good	34.638 \| good	13.795 \| good	0.712 \| good	4.497 \| good	0.193 \| good
2025-12-08T12:00:00.000Z	49 \| good	8.941 \| good	39.309 \| good	15.015 \| good	0.718 \| good	4.76 \| good	0.194 \| good
2025-12-08T13:00:00.000Z	49 \| good	9.254 \| good	41.674 \| good	14.973 \| good	0.859 \| good	5.698 \| good	0.204 \| good
2025-12-08T14:00:00.000Z	49 \| good	8.582 \| good	37.803 \| good	16.372 \| good	1.001 \| good	6.636 \| good	0.214 \| good
2025-12-08T15:00:00.000Z	49 \| good	8.613 \| good	37.759 \| good	13.975 \| good	1.142 \| good	7.575 \| good	0.224 \| good
2025-12-08T16:00:00.000Z	49 \| good	8.515 \| good	37.413 \| good	15.635 \| good	1.529 \| good	7.088 \| good	0.217 \| good
2025-12-08T17:00:00.000Z	52 \| moderate	10.043 \| good	44.556 \| good	14.015 \| good	1.916 \| good	6.601 \| good	0.209 \| good
2025-12-08T18:00:00.000Z	52 \| moderate	10.421 \| good	46.405 \| good	14.218 \| good	2.303 \| good	6.114 \| good	0.201 \| good
2025-12-08T19:00:00.000Z	52 \| moderate	10.44 \| good	46.233 \| good	16.571 \| good	2.52 \| good	6.911 \| good	0.204 \| good
2025-12-08T20:00:00.000Z	54 \| moderate	10.787 \| good	47.642 \| good	16.847 \| good	2.737 \| good	7.708 \| good	0.207 \| good
2025-12-08T21:00:00.000Z	54 \| moderate	10.891 \| good	48.01 \| good	15.311 \| good	2.955 \| good	8.505 \| good	0.21 \| good
2025-12-08T22:00:00.000Z	56 \| moderate	11.83 \| good	52.167 \| good	9.63 \| good	2.872 \| good	15.11 \| good	0.254 \| good
2025-12-08T23:00:00.000Z	62 \| moderate	14.758 \| fine	65.899 \| fine	4.105 \| good	2.789 \| good	21.715 \| good	0.298 \| good
2025-12-09T00:00:00.000Z	77 \| moderate	22.905 \| fine	100.083 \| fine	2.709 \| good	2.706 \| good	28.32 \| good	0.342 \| good
2025-12-09T01:00:00.000Z	81 \| moderate	24.83 \| fine	107.915 \| fine	0.702 \| good	2.874 \| good	25.481 \| good	0.323 \| good
2025-12-09T02:00:00.000Z	75 \| moderate	22.07 \| fine	96.909 \| fine	0.596 \| good	3.042 \| good	22.642 \| good	0.304 \| good
2025-12-09T03:00:00.000Z	69 \| moderate	18.883 \| fine	83.315 \| fine	1.199 \| good	3.21 \| good	19.803 \| good	0.286 \| good
2025-12-09T04:00:00.000Z	64 \| moderate	15.949 \| fine	71.031 \| fine	2.183 \| good	2.641 \| good	15.684 \| good	0.261 \| good
2025-12-09T05:00:00.000Z	64 \| moderate	15.894 \| fine	71.087 \| fine	5.261 \| good	2.071 \| good	11.565 \| good	0.236 \| good
2025-12-09T06:00:00.000Z	52 \| moderate	9.596 \| good	9.682 \| good	24.13 \| good	1.517 \| good	7.605 \| good	0.211 \| good
2025-12-09T07:00:00.000Z	49 \| good	8.785 \| good	38.934 \| good	15.993 \| good	1.245 \| good	5.888 \| good	0.201 \| good
2025-12-09T08:00:00.000Z	38 \| good	7.347 \| good	32.601 \| good	18.241 \| good	0.989 \| good	4.33 \| good	0.19 \| good
2025-12-09T09:00:00.000Z	38 \| good	7.264 \| good	32.284 \| good	21.052 \| good	0.734 \| good	2.772 \| good	0.18 \| good
2025-12-09T10:00:00.000Z	44 \| good	8.03 \| good	35.373 \| good	21.381 \| good	0.697 \| good	2.834 \| good	0.179 \| good

Maryland Heights

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Maryland Heights, Missouri air quality map: Track AQI near you

0.27ppm

How accurate is Missouri, USA air quality data?

Air quality data and pollutant measurements for Missouri, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Maryland Heights, Missouri updated?

The air quality for Maryland Heights, Missouri is updated every hour.

When was the worst air quality at Maryland Heights, Missouri in the last 24 hrs?

The worst air quality in Maryland Heights, Missouri in the last 24 hours was observed at 09:00:00 on 2025-12-07.

When was the best air quality at Maryland Heights, Missouri in the last 24 hrs?

In the last 24 hrs, the best air quality in Maryland Heights, Missouri was observed at 11:00:00 on 2025-12-06.

What is the current air quality in Maryland Heights, Missouri?

The current air quality in Maryland Heights, Missouri is 64, categorized as Moderate based on real-time data.

What pollutant is the most common in Maryland Heights, Missouri?

The most common pollutant in Maryland Heights, Missouri is PM2.5.

What should I do if the air quality in Maryland Heights, Missouri is poor?

If the air quality in Maryland Heights, Missouri is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Maryland Heights, Missouri?

The current PM_2.5 concentration at Maryland Heights, Missouri is 16.238 μg/m³.

What is the current concentration of PM₁₀ in Maryland Heights, Missouri?

The current PM₁₀ concentration at Maryland Heights, Missouri is 65.991 μg/m³.

What is the current concentration of carbon monoxide (CO) in Maryland Heights, Missouri?

The current carbon monoxide (CO) concentration at Maryland Heights, Missouri is 0.255 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Maryland Heights, Missouri?

The current sulfur dioxide (SO₂) concentration at Maryland Heights, Missouri is 0.664 ppb.

What is the current concentration of ozone (O₃) in Maryland Heights, Missouri?

The current ozone (O₃) concentration at Maryland Heights, Missouri is 8.867 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Maryland Heights, Missouri?

The current nitrogen dioxide (NO₂) concentration at Maryland Heights, Missouri is 7.93 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T11:00:00.000Z	49 \| good	9.041 \| good	36.76 \| good	7.47 \| good	1.27 \| good	30.779 \| good	0.322 \| good
2025-12-05T12:00:00.000Z	58 \| moderate	12.648 \| fine	52.924 \| good	5.47 \| good	1.014 \| good	31.629 \| good	0.381 \| good
2025-12-05T13:00:00.000Z	58 \| moderate	13.442 \| fine	56.934 \| fine	5.016 \| good	0.716 \| good	30.258 \| good	0.439 \| good
2025-12-05T14:00:00.000Z	60 \| moderate	14.186 \| fine	52.507 \| good	7.689 \| good	1.391 \| good	27.164 \| good	0.512 \| good
2025-12-05T15:00:00.000Z	62 \| moderate	15.301 \| fine	65.823 \| fine	8.241 \| good	2.131 \| good	22.944 \| good	0.411 \| good
2025-12-05T16:00:00.000Z	66 \| moderate	16.894 \| fine	67.829 \| fine	12.596 \| good	0.39 \| good	18.251 \| good	0.351 \| good
2025-12-05T17:00:00.000Z	66 \| moderate	17.03 \| fine	72.632 \| fine	14.16 \| good	1.048 \| good	15.756 \| good	0.406 \| good
2025-12-05T18:00:00.000Z	64 \| moderate	16.385 \| fine	65.482 \| fine	18.516 \| good	2.007 \| good	14.113 \| good	0.347 \| good
2025-12-05T19:00:00.000Z	64 \| moderate	16.146 \| fine	63.703 \| fine	17.395 \| good	0.961 \| good	11.954 \| good	0.312 \| good
2025-12-05T20:00:00.000Z	58 \| moderate	13.31 \| fine	56.392 \| fine	23.577 \| good	1.424 \| good	11.892 \| good	0.314 \| good
2025-12-05T21:00:00.000Z	58 \| moderate	12.78 \| fine	49.865 \| good	22.905 \| good	1.612 \| good	11.381 \| good	0.312 \| good
2025-12-05T22:00:00.000Z	52 \| moderate	9.997 \| good	40.559 \| good	21.198 \| good	0.86 \| good	14.675 \| good	0.314 \| good
2025-12-05T23:00:00.000Z	49 \| good	9.129 \| good	42.757 \| good	17.38 \| good	0.621 \| good	17.704 \| good	0.404 \| good
2025-12-06T00:00:00.000Z	49 \| good	9.35 \| good	38.376 \| good	15.847 \| good	0.731 \| good	18.627 \| good	0.441 \| good
2025-12-06T01:00:00.000Z	49 \| good	8.894 \| good	39.197 \| good	18.986 \| good	0.665 \| good	19.751 \| good	0.406 \| good
2025-12-06T02:00:00.000Z	49 \| good	8.664 \| good	36.231 \| good	18.017 \| good	1.427 \| good	21.391 \| good	0.406 \| good
2025-12-06T03:00:00.000Z	52 \| moderate	9.895 \| good	42.73 \| good	16.722 \| good	1.433 \| good	15.223 \| good	0.292 \| good
2025-12-06T04:00:00.000Z	54 \| moderate	10.525 \| good	44.766 \| good	19.007 \| good	0.975 \| good	15.056 \| good	0.292 \| good
2025-12-06T05:00:00.000Z	52 \| moderate	10.199 \| good	42.04 \| good	16.367 \| good	0.973 \| good	13.834 \| good	0.327 \| good
2025-12-06T06:00:00.000Z	52 \| moderate	9.595 \| good	34.922 \| good	15.487 \| good	0.857 \| good	11.404 \| good	0.234 \| good
2025-12-06T07:00:00.000Z	52 \| moderate	9.848 \| good	37.879 \| good	14.477 \| good	0.855 \| good	11.347 \| good	0.229 \| good
2025-12-06T08:00:00.000Z	52 \| moderate	9.923 \| good	35.82 \| good	14.888 \| good	0.855 \| good	11.275 \| good	0.229 \| good
2025-12-06T09:00:00.000Z	54 \| moderate	10.611 \| good	42.649 \| good	16.078 \| good	0.616 \| good	8.995 \| good	0.229 \| good
2025-12-06T10:00:00.000Z	54 \| moderate	10.894 \| good	47.149 \| good	12.522 \| good	0.556 \| good	8.261 \| good	0.229 \| good
2025-12-06T11:00:00.000Z	54 \| moderate	11.413 \| good	49.902 \| good	10.794 \| good	0.517 \| good	10.359 \| good	0.264 \| good
2025-12-06T12:00:00.000Z	56 \| moderate	12.428 \| fine	47.123 \| good	9.691 \| good	0.446 \| good	12.049 \| good	0.229 \| good
2025-12-06T13:00:00.000Z	60 \| moderate	14.13 \| fine	46.815 \| good	7.915 \| good	0.419 \| good	12.925 \| good	0.287 \| good
2025-12-06T14:00:00.000Z	54 \| moderate	11.464 \| good	43.463 \| good	5.546 \| good	0.466 \| good	11.759 \| good	0.347 \| good
2025-12-06T15:00:00.000Z	56 \| moderate	11.601 \| good	47.567 \| good	7.442 \| good	0.532 \| good	9.286 \| good	0.287 \| good
2025-12-06T16:00:00.000Z	56 \| moderate	12.104 \| fine	43.333 \| good	10.222 \| good	0.536 \| good	7.764 \| good	0.289 \| good
2025-12-06T17:00:00.000Z	54 \| moderate	11.029 \| good	31.798 \| good	11.775 \| good	1.266 \| good	8.376 \| good	0.289 \| good
2025-12-06T18:00:00.000Z	56 \| moderate	11.9 \| good	43.02 \| good	15.249 \| good	1.868 \| good	7.892 \| good	0.289 \| good
2025-12-06T19:00:00.000Z	56 \| moderate	11.856 \| good	43.172 \| good	18.666 \| good	6.563 \| good	8.361 \| good	0.292 \| good
2025-12-06T20:00:00.000Z	54 \| moderate	10.695 \| good	35.228 \| good	21.101 \| good	3.605 \| good	9.68 \| good	0.309 \| good
2025-12-06T21:00:00.000Z	54 \| moderate	11.423 \| good	43.872 \| good	23.613 \| good	1.374 \| good	8.694 \| good	0.252 \| good
2025-12-06T22:00:00.000Z	54 \| moderate	10.772 \| good	40.394 \| good	15.113 \| good	1.094 \| good	12.002 \| good	0.347 \| good
2025-12-06T23:00:00.000Z	49 \| good	8.638 \| good	33.555 \| good	15.841 \| good	0.414 \| good	15.703 \| good	0.349 \| good
2025-12-07T00:00:00.000Z	54 \| moderate	10.62 \| good	45.152 \| good	16.912 \| good	0.933 \| good	17.522 \| good	0.349 \| good
2025-12-07T01:00:00.000Z	54 \| moderate	10.955 \| good	53.301 \| good	18.557 \| good	1.108 \| good	13.244 \| good	0.289 \| good
2025-12-07T02:00:00.000Z	52 \| moderate	9.553 \| good	42.338 \| good	17.095 \| good	1.065 \| good	10.361 \| good	0.294 \| good
2025-12-07T03:00:00.000Z	54 \| moderate	11.015 \| good	48.592 \| good	13.447 \| good	0.787 \| good	9.494 \| good	0.257 \| good
2025-12-07T04:00:00.000Z	52 \| moderate	10.467 \| good	49.029 \| good	17.32 \| good	0.77 \| good	9.5 \| good	0.257 \| good
2025-12-07T05:00:00.000Z	60 \| moderate	13.505 \| fine	51.938 \| good	17.151 \| good	0.924 \| good	11.017 \| good	0.294 \| good
2025-12-07T06:00:00.000Z	60 \| moderate	13.882 \| fine	52.023 \| good	16.489 \| good	0.91 \| good	11.045 \| good	0.289 \| good
2025-12-07T07:00:00.000Z	58 \| moderate	13.363 \| fine	51.357 \| good	14.822 \| good	0.908 \| good	11.074 \| good	0.294 \| good
2025-12-07T08:00:00.000Z	64 \| moderate	16.282 \| fine	56.447 \| fine	16.289 \| good	0.641 \| good	9.579 \| good	0.214 \| good
2025-12-07T09:00:00.000Z	64 \| moderate	16.214 \| fine	63.213 \| fine	9.346 \| good	0.633 \| good	9.544 \| good	0.257 \| good
2025-12-07T10:00:00.000Z	64 \| moderate	16.238 \| fine	65.991 \| fine	8.867 \| good	0.664 \| good	7.93 \| good	0.255 \| good
2025-12-07T11:00:00.000Z	67 \| moderate	18.099 \| fine	80.221 \| fine	2.873 \| good	0.763 \| good	8.358 \| good	0.212 \| good
2025-12-07T12:00:00.000Z	67 \| moderate	17.772 \| fine	78.569 \| fine	3.228 \| good	0.805 \| good	9.326 \| good	0.214 \| good
2025-12-07T13:00:00.000Z	69 \| moderate	19.459 \| fine	86.037 \| fine	2.246 \| good	0.885 \| good	11.113 \| good	0.246 \| good
2025-12-07T14:00:00.000Z	73 \| moderate	20.782 \| fine	91.393 \| fine	6.201 \| good	0.965 \| good	12.9 \| good	0.277 \| good
2025-12-07T15:00:00.000Z	73 \| moderate	20.918 \| fine	91.932 \| fine	14.859 \| good	1.045 \| good	14.687 \| good	0.309 \| good
2025-12-07T16:00:00.000Z	71 \| moderate	19.863 \| fine	87.286 \| fine	16.628 \| good	0.938 \| good	11.795 \| good	0.282 \| good
2025-12-07T17:00:00.000Z	75 \| moderate	21.573 \| fine	94.314 \| fine	13.771 \| good	0.831 \| good	8.903 \| good	0.255 \| good
2025-12-07T18:00:00.000Z	77 \| moderate	23.174 \| fine	101.229 \| fine	15.337 \| good	0.724 \| good	6.011 \| good	0.228 \| good
2025-12-07T19:00:00.000Z	71 \| moderate	19.637 \| fine	86.624 \| fine	19.147 \| good	0.916 \| good	6.673 \| good	0.229 \| good
2025-12-07T20:00:00.000Z	64 \| moderate	16.137 \| fine	72.209 \| fine	19.096 \| good	1.108 \| good	7.336 \| good	0.23 \| good
2025-12-07T21:00:00.000Z	56 \| moderate	11.552 \| good	51.189 \| good	18.721 \| good	1.3 \| good	7.999 \| good	0.23 \| good
2025-12-07T22:00:00.000Z	44 \| good	8.263 \| good	36.199 \| good	20.604 \| good	1.188 \| good	7.631 \| good	0.225 \| good
2025-12-07T23:00:00.000Z	44 \| good	8.416 \| good	36.683 \| good	21.399 \| good	1.077 \| good	7.263 \| good	0.22 \| good
2025-12-08T00:00:00.000Z	44 \| good	7.91 \| good	34.681 \| good	20.385 \| good	0.965 \| good	6.896 \| good	0.214 \| good
2025-12-08T01:00:00.000Z	38 \| good	6.935 \| good	30.87 \| good	17.928 \| good	0.897 \| good	6.156 \| good	0.21 \| good
2025-12-08T02:00:00.000Z	44 \| good	7.572 \| good	33.089 \| good	12.645 \| good	0.83 \| good	5.416 \| good	0.206 \| good
2025-12-08T03:00:00.000Z	44 \| good	7.715 \| good	34.001 \| good	13.747 \| good	0.762 \| good	4.676 \| good	0.202 \| good
2025-12-08T04:00:00.000Z	38 \| good	7.483 \| good	33.053 \| good	15.868 \| good	0.754 \| good	4.513 \| good	0.201 \| good
2025-12-08T05:00:00.000Z	49 \| good	8.582 \| good	37.36 \| good	18.168 \| good	0.746 \| good	4.35 \| good	0.2 \| good
2025-12-08T06:00:00.000Z	44 \| good	7.668 \| good	33.644 \| good	18.19 \| good	0.738 \| good	4.188 \| good	0.199 \| good
2025-12-08T07:00:00.000Z	38 \| good	6.665 \| good	29.5 \| good	16.565 \| good	0.725 \| good	4.115 \| good	0.197 \| good
2025-12-08T08:00:00.000Z	38 \| good	6.865 \| good	30.372 \| good	14.334 \| good	0.713 \| good	4.043 \| good	0.195 \| good
2025-12-08T09:00:00.000Z	44 \| good	7.915 \| good	34.818 \| good	15.041 \| good	0.7 \| good	3.971 \| good	0.193 \| good
2025-12-08T10:00:00.000Z	49 \| good	9.045 \| good	40.046 \| good	11.593 \| good	0.706 \| good	4.234 \| good	0.193 \| good
2025-12-08T11:00:00.000Z	44 \| good	7.905 \| good	34.638 \| good	13.795 \| good	0.712 \| good	4.497 \| good	0.193 \| good
2025-12-08T12:00:00.000Z	49 \| good	8.941 \| good	39.309 \| good	15.015 \| good	0.718 \| good	4.76 \| good	0.194 \| good
2025-12-08T13:00:00.000Z	49 \| good	9.254 \| good	41.674 \| good	14.973 \| good	0.859 \| good	5.698 \| good	0.204 \| good
2025-12-08T14:00:00.000Z	49 \| good	8.582 \| good	37.803 \| good	16.372 \| good	1.001 \| good	6.636 \| good	0.214 \| good
2025-12-08T15:00:00.000Z	49 \| good	8.613 \| good	37.759 \| good	13.975 \| good	1.142 \| good	7.575 \| good	0.224 \| good
2025-12-08T16:00:00.000Z	49 \| good	8.515 \| good	37.413 \| good	15.635 \| good	1.529 \| good	7.088 \| good	0.217 \| good
2025-12-08T17:00:00.000Z	52 \| moderate	10.043 \| good	44.556 \| good	14.015 \| good	1.916 \| good	6.601 \| good	0.209 \| good
2025-12-08T18:00:00.000Z	52 \| moderate	10.421 \| good	46.405 \| good	14.218 \| good	2.303 \| good	6.114 \| good	0.201 \| good
2025-12-08T19:00:00.000Z	52 \| moderate	10.44 \| good	46.233 \| good	16.571 \| good	2.52 \| good	6.911 \| good	0.204 \| good
2025-12-08T20:00:00.000Z	54 \| moderate	10.787 \| good	47.642 \| good	16.847 \| good	2.737 \| good	7.708 \| good	0.207 \| good
2025-12-08T21:00:00.000Z	54 \| moderate	10.891 \| good	48.01 \| good	15.311 \| good	2.955 \| good	8.505 \| good	0.21 \| good
2025-12-08T22:00:00.000Z	56 \| moderate	11.83 \| good	52.167 \| good	9.63 \| good	2.872 \| good	15.11 \| good	0.254 \| good
2025-12-08T23:00:00.000Z	62 \| moderate	14.758 \| fine	65.899 \| fine	4.105 \| good	2.789 \| good	21.715 \| good	0.298 \| good
2025-12-09T00:00:00.000Z	77 \| moderate	22.905 \| fine	100.083 \| fine	2.709 \| good	2.706 \| good	28.32 \| good	0.342 \| good
2025-12-09T01:00:00.000Z	81 \| moderate	24.83 \| fine	107.915 \| fine	0.702 \| good	2.874 \| good	25.481 \| good	0.323 \| good
2025-12-09T02:00:00.000Z	75 \| moderate	22.07 \| fine	96.909 \| fine	0.596 \| good	3.042 \| good	22.642 \| good	0.304 \| good
2025-12-09T03:00:00.000Z	69 \| moderate	18.883 \| fine	83.315 \| fine	1.199 \| good	3.21 \| good	19.803 \| good	0.286 \| good
2025-12-09T04:00:00.000Z	64 \| moderate	15.949 \| fine	71.031 \| fine	2.183 \| good	2.641 \| good	15.684 \| good	0.261 \| good
2025-12-09T05:00:00.000Z	64 \| moderate	15.894 \| fine	71.087 \| fine	5.261 \| good	2.071 \| good	11.565 \| good	0.236 \| good
2025-12-09T06:00:00.000Z	52 \| moderate	9.596 \| good	9.682 \| good	24.13 \| good	1.517 \| good	7.605 \| good	0.211 \| good
2025-12-09T07:00:00.000Z	49 \| good	8.785 \| good	38.934 \| good	15.993 \| good	1.245 \| good	5.888 \| good	0.201 \| good
2025-12-09T08:00:00.000Z	38 \| good	7.347 \| good	32.601 \| good	18.241 \| good	0.989 \| good	4.33 \| good	0.19 \| good
2025-12-09T09:00:00.000Z	38 \| good	7.264 \| good	32.284 \| good	21.052 \| good	0.734 \| good	2.772 \| good	0.18 \| good
2025-12-09T10:00:00.000Z	44 \| good	8.03 \| good	35.373 \| good	21.381 \| good	0.697 \| good	2.834 \| good	0.179 \| good

Maryland Heights, Missouri live air quality index now

Major air pollutants in Maryland Heights, Missouri

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Air quality in nearby cities

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the current concentration of PM_2.5 in Maryland Heights, Missouri?

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