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

The current PM10 concentration at Maryland Heights, Missouri is 38.048 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 0.352 ppb.

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

The current ozone (O3) concentration at Maryland Heights, Missouri is 33.959 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 2.78 ppb.

Live air quality index in Maryland Heights, Missouri today

Name: Live air pollution levels in Maryland Heights, Missouri today
Creator: Ambee

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)

Good

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)

8.76 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

38.05 μg/m³

155

255

425

605+

Ozone (O₃)

33.96 ppb

201

201+

Sulfur Dioxide (SO₂)

0.35 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.78 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 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
2025-06-03T00:00:00.000Z	60 \| moderate	14.057 \| fine	62.833 \| fine	50.97 \| good	0.307 \| good	9.462 \| good	0.31 \| good
2025-06-03T01:00:00.000Z	56 \| moderate	11.87 \| good	49.533 \| good	46.029 \| good	0.332 \| good	9.278 \| good	0.314 \| good
2025-06-03T02:00:00.000Z	54 \| moderate	11.117 \| good	43.045 \| good	41.608 \| good	0.368 \| good	7.901 \| good	0.258 \| good
2025-06-03T03:00:00.000Z	44 \| good	8.193 \| good	33.789 \| good	39.649 \| good	0.411 \| good	7.974 \| good	0.258 \| good
2025-06-03T04:00:00.000Z	44 \| good	7.741 \| good	25.603 \| good	42.636 \| good	1.25 \| good	8.86 \| good	0.258 \| good
2025-06-03T05:00:00.000Z	49 \| good	8.736 \| good	38.551 \| good	35.787 \| good	0.742 \| good	7.362 \| good	0.255 \| good
2025-06-03T06:00:00.000Z	52 \| moderate	10.066 \| good	45.652 \| good	35.053 \| good	0.828 \| good	7.844 \| good	0.258 \| good
2025-06-03T07:00:00.000Z	52 \| moderate	9.513 \| good	24.018 \| good	32.72 \| good	0.711 \| good	7.377 \| good	0.262 \| good
2025-06-03T08:00:00.000Z	52 \| moderate	9.908 \| good	45.938 \| good	31.104 \| good	0.804 \| good	7.577 \| good	0.255 \| good
2025-06-03T09:00:00.000Z	49 \| good	9.059 \| good	37.54 \| good	30.359 \| good	0.919 \| good	6.208 \| good	0.221 \| good
2025-06-03T10:00:00.000Z	49 \| good	9.441 \| good	37.8 \| good	31.754 \| good	1.049 \| good	6.032 \| good	0.166 \| good
2025-06-03T11:00:00.000Z	49 \| good	9.307 \| good	40.737 \| good	33.444 \| good	0.949 \| good	10.447 \| good	0.221 \| good
2025-06-03T12:00:00.000Z	49 \| good	9.226 \| good	40.852 \| good	32.632 \| good	0.94 \| good	10.387 \| good	0.225 \| good
2025-06-03T13:00:00.000Z	52 \| moderate	9.69 \| good	44.966 \| good	33.161 \| good	0.286 \| good	12.46 \| good	0.314 \| good
2025-06-03T14:00:00.000Z	52 \| moderate	10.129 \| good	55.755 \| fine	36.031 \| good	0.82 \| good	9.785 \| good	0.28 \| good
2025-06-03T15:00:00.000Z	54 \| moderate	11.314 \| good	49.655 \| good	37.437 \| good	0.998 \| good	7.198 \| good	0.258 \| good
2025-06-03T16:00:00.000Z	58 \| moderate	12.952 \| fine	53.011 \| good	41.609 \| good	0.205 \| good	6.668 \| good	0.255 \| good
2025-06-03T17:00:00.000Z	58 \| moderate	12.602 \| fine	53.366 \| good	44.206 \| good	0.198 \| good	6.369 \| good	0.255 \| good
2025-06-03T18:00:00.000Z	54 \| moderate	10.821 \| good	46.441 \| good	44.043 \| good	0.182 \| good	5.982 \| good	0.255 \| good
2025-06-03T19:00:00.000Z	60 \| moderate	14.066 \| fine	57.841 \| fine	45.662 \| good	0.642 \| good	7.155 \| good	0.255 \| good
2025-06-03T20:00:00.000Z	60 \| moderate	14.227 \| fine	53.283 \| good	43.532 \| good	0.648 \| good	6.965 \| good	0.251 \| good
2025-06-03T21:00:00.000Z	60 \| moderate	14.41 \| fine	55.604 \| fine	42.425 \| good	0.636 \| good	5.799 \| good	0.314 \| good
2025-06-03T22:00:00.000Z	60 \| moderate	14.425 \| fine	58.414 \| fine	43.488 \| good	0.651 \| good	5.425 \| good	0.255 \| good
2025-06-03T23:00:00.000Z	60 \| moderate	13.957 \| fine	54.209 \| good	43.728 \| good	0.182 \| good	5.918 \| good	0.255 \| good
2025-06-04T00:00:00.000Z	56 \| moderate	12.016 \| good	35.895 \| good	42.986 \| good	0.634 \| good	4.639 \| good	0.258 \| good
2025-06-04T01:00:00.000Z	56 \| moderate	12.131 \| fine	43.654 \| good	44.605 \| good	0.637 \| good	5.617 \| good	0.255 \| good
2025-06-04T02:00:00.000Z	56 \| moderate	11.514 \| good	43.941 \| good	42.017 \| good	0.582 \| good	6.538 \| good	0.258 \| good
2025-06-04T03:00:00.000Z	44 \| good	7.957 \| good	34.996 \| good	46.438 \| good	0.816 \| good	4.812 \| good	0.25 \| good
2025-06-04T04:00:00.000Z	60 \| moderate	14.01 \| fine	60.626 \| fine	41.484 \| good	0.443 \| good	7.154 \| good	0.255 \| good
2025-06-04T05:00:00.000Z	62 \| moderate	14.677 \| fine	59.725 \| fine	38.647 \| good	0.382 \| good	6.375 \| good	0.276 \| good
2025-06-04T06:00:00.000Z	67 \| moderate	17.556 \| fine	70.502 \| fine	40.822 \| good	0.478 \| good	5.756 \| good	0.272 \| good
2025-06-04T07:00:00.000Z	67 \| moderate	17.764 \| fine	46.96 \| good	40.777 \| good	0.474 \| good	5.633 \| good	0.276 \| good
2025-06-04T08:00:00.000Z	60 \| moderate	13.618 \| fine	49.944 \| good	40.244 \| good	0.475 \| good	5.656 \| good	0.272 \| good
2025-06-04T09:00:00.000Z	39 \| good	4.844 \| good	26.768 \| good	41.951 \| good	0.706 \| good	5.517 \| good	0.128 \| good
2025-06-04T10:00:00.000Z	40 \| good	2.582 \| good	10.597 \| good	43.321 \| good	0.419 \| good	5.705 \| good	0.183 \| good
2025-06-04T11:00:00.000Z	41 \| good	2.84 \| good	11.01 \| good	43.524 \| good	0.164 \| good	10.77 \| good	0.19 \| good
2025-06-04T12:00:00.000Z	37 \| good	2.265 \| good	8.169 \| good	40.449 \| good	0.602 \| good	14.921 \| good	0.272 \| good
2025-06-04T13:00:00.000Z	49 \| good	8.756 \| good	38.048 \| good	33.959 \| good	0.352 \| good	2.78 \| good	0.2 \| good
2025-06-04T14:00:00.000Z	37 \| good	3.57 \| good	27.032 \| good	40.293 \| good	0.571 \| good	26.316 \| good	0.346 \| good
2025-06-04T15:00:00.000Z	41 \| good	6.134 \| good	43.533 \| good	34.852 \| good	0.646 \| good	19.976 \| good	0.345 \| good
2025-06-04T16:00:00.000Z	35 \| good	4.564 \| good	38.128 \| good	37.052 \| good	0.175 \| good	15.827 \| good	0.331 \| good
2025-06-04T17:00:00.000Z	32 \| good	4.234 \| good	25.617 \| good	35.325 \| good	0.18 \| good	11.656 \| good	0.328 \| good
2025-06-04T18:00:00.000Z	38 \| good	7.158 \| good	16.736 \| good	34.847 \| good	0.36 \| good	8.417 \| good	0.279 \| good
2025-06-04T19:00:00.000Z	49 \| good	9.427 \| good	37.426 \| good	36.41 \| good	0.203 \| good	9.625 \| good	0.285 \| good
2025-06-04T20:00:00.000Z	58 \| moderate	12.949 \| fine	45.225 \| good	33.478 \| good	0.205 \| good	12.231 \| good	0.324 \| good
2025-06-04T21:00:00.000Z	54 \| moderate	11.484 \| good	43.897 \| good	38.128 \| good	0.174 \| good	7.879 \| good	0.272 \| good
2025-06-04T22:00:00.000Z	44 \| good	8.003 \| good	41.506 \| good	35.05 \| good	0.525 \| good	14.821 \| good	0.183 \| good
2025-06-04T23:00:00.000Z	33 \| good	6.159 \| good	36.04 \| good	34.379 \| good	0.49 \| good	14.627 \| good	0.272 \| good
2025-06-04T14:00:00.000Z	49 \| good	8.756 \| good	38.048 \| good	33.959 \| good	0.352 \| good	2.78 \| good	0.2 \| good
2025-06-04T15:00:00.000Z	49 \| good	8.811 \| good	38.543 \| good	39.055 \| good	0.49 \| good	4.225 \| good	0.21 \| good
2025-06-04T16:00:00.000Z	43 \| good	6.146 \| good	27.23 \| good	46.241 \| good	0.396 \| good	1.672 \| good	0.19 \| good
2025-06-04T17:00:00.000Z	38 \| good	4.985 \| good	21.379 \| good	40.897 \| good	0.526 \| good	2.131 \| good	0.199 \| good
2025-06-04T18:00:00.000Z	54 \| moderate	11.213 \| good	49.591 \| good	40.177 \| good	0.656 \| good	2.591 \| good	0.207 \| good
2025-06-04T19:00:00.000Z	60 \| moderate	13.987 \| fine	62.69 \| fine	33.681 \| good	0.406 \| good	1.897 \| good	0.194 \| good
2025-06-04T20:00:00.000Z	71 \| moderate	20.236 \| fine	89.395 \| fine	34.886 \| good	0.516 \| good	2.405 \| good	0.199 \| good
2025-06-04T21:00:00.000Z	81 \| moderate	24.59 \| fine	107.871 \| fine	41.745 \| good	0.626 \| good	2.913 \| good	0.204 \| good
2025-06-04T22:00:00.000Z	79 \| moderate	24.091 \| fine	104.607 \| fine	43.36 \| good	0.323 \| good	3.221 \| good	0.211 \| good
2025-06-04T23:00:00.000Z	77 \| moderate	22.844 \| fine	100.486 \| fine	45.07 \| good	0.427 \| good	4.369 \| good	0.223 \| good
2025-06-05T00:00:00.000Z	82 \| moderate	26.062 \| fine	113.216 \| fine	46.628 \| good	0.532 \| good	5.518 \| good	0.234 \| good
2025-06-05T01:00:00.000Z	81 \| moderate	25.449 \| fine	110.893 \| fine	38.984 \| good	0.425 \| good	8.196 \| good	0.253 \| good
2025-06-05T02:00:00.000Z	86 \| moderate	28.314 \| fine	122.477 \| fine	37.107 \| good	0.561 \| good	11.926 \| good	0.285 \| good
2025-06-05T03:00:00.000Z	96 \| moderate	33.108 \| fine	142.493 \| fine	34.395 \| good	0.697 \| good	15.656 \| good	0.317 \| good
2025-06-05T04:00:00.000Z	102 \| sensitive	35.681 \| moderate	155.089 \| moderate	37.225 \| good	0.536 \| good	5.144 \| good	0.229 \| good
2025-06-05T05:00:00.000Z	110 \| sensitive	38.654 \| moderate	170.11 \| moderate	38.315 \| good	0.632 \| good	6.47 \| good	0.243 \| good
2025-06-05T06:00:00.000Z	117 \| sensitive	42.114 \| moderate	186.768 \| moderate	37.711 \| good	0.729 \| good	7.797 \| good	0.256 \| good
2025-06-05T07:00:00.000Z	122 \| sensitive	43.853 \| moderate	195.298 \| moderate	34.146 \| good	0.77 \| good	4.317 \| good	0.22 \| good
2025-06-05T08:00:00.000Z	117 \| sensitive	42.388 \| moderate	188.092 \| moderate	32.705 \| good	0.845 \| good	4.89 \| good	0.226 \| good
2025-06-05T09:00:00.000Z	105 \| sensitive	37.336 \| moderate	163.841 \| moderate	30.681 \| good	0.921 \| good	5.464 \| good	0.232 \| good
2025-06-05T10:00:00.000Z	107 \| sensitive	37.852 \| moderate	165.679 \| moderate	27.47 \| good	0.894 \| good	4.006 \| good	0.214 \| good
2025-06-05T11:00:00.000Z	102 \| sensitive	35.887 \| moderate	157 \| moderate	27.127 \| good	0.971 \| good	4.485 \| good	0.218 \| good
2025-06-05T12:00:00.000Z	102 \| sensitive	35.914 \| moderate	156.989 \| moderate	26.118 \| good	1.049 \| good	4.963 \| good	0.222 \| good
2025-06-05T13:00:00.000Z	110 \| sensitive	39.094 \| moderate	172.934 \| moderate	25.937 \| good	1.099 \| good	2.429 \| good	0.214 \| good
2025-06-05T14:00:00.000Z	117 \| sensitive	42.076 \| moderate	187.383 \| moderate	25.538 \| good	1.208 \| good	2.958 \| good	0.22 \| good
2025-06-05T15:00:00.000Z	112 \| sensitive	39.615 \| moderate	175.748 \| moderate	29.247 \| good	1.317 \| good	3.487 \| good	0.226 \| good
2025-06-05T16:00:00.000Z	105 \| sensitive	37.097 \| moderate	162.374 \| moderate	32.973 \| good	0.763 \| good	1.156 \| good	0.181 \| good
2025-06-05T17:00:00.000Z	99 \| moderate	34.5 \| fine	148.859 \| fine	33.678 \| good	0.897 \| good	1.381 \| good	0.184 \| good
2025-06-05T18:00:00.000Z	96 \| moderate	32.894 \| fine	142.133 \| fine	34.972 \| good	1.03 \| good	1.606 \| good	0.188 \| good
2025-06-05T19:00:00.000Z	88 \| moderate	29.496 \| fine	127.677 \| fine	37.78 \| good	0.53 \| good	1.01 \| good	0.172 \| good
2025-06-05T20:00:00.000Z	86 \| moderate	27.559 \| fine	119.843 \| fine	39.763 \| good	0.68 \| good	1.152 \| good	0.175 \| good
2025-06-05T21:00:00.000Z	69 \| moderate	19.449 \| fine	86.091 \| fine	41.775 \| good	0.83 \| good	1.293 \| good	0.178 \| good
2025-06-05T22:00:00.000Z	64 \| moderate	16.494 \| fine	73.144 \| fine	42.565 \| good	0.444 \| good	3.296 \| good	0.195 \| good
2025-06-05T23:00:00.000Z	62 \| moderate	15 \| fine	67.077 \| fine	41.101 \| good	0.586 \| good	4.282 \| good	0.206 \| good
2025-06-06T00:00:00.000Z	66 \| moderate	17.465 \| fine	77.089 \| fine	46.902 \| good	0.728 \| good	5.267 \| good	0.216 \| good
2025-06-06T01:00:00.000Z	67 \| moderate	17.741 \| fine	78.753 \| fine	37.188 \| good	0.616 \| good	10.674 \| good	0.275 \| good
2025-06-06T02:00:00.000Z	69 \| moderate	19.009 \| fine	84.581 \| fine	31.986 \| good	0.723 \| good	12.719 \| good	0.289 \| good
2025-06-06T03:00:00.000Z	77 \| moderate	22.615 \| fine	98.67 \| fine	26.58 \| good	0.829 \| good	14.763 \| good	0.304 \| good
2025-06-06T04:00:00.000Z	79 \| moderate	23.546 \| fine	103.539 \| fine	23.283 \| good	0.787 \| good	17.124 \| good	0.337 \| good
2025-06-06T05:00:00.000Z	71 \| moderate	19.666 \| fine	87.117 \| fine	21.869 \| good	0.862 \| good	20.08 \| good	0.355 \| good
2025-06-06T06:00:00.000Z	66 \| moderate	17.233 \| fine	76.71 \| fine	20.818 \| good	0.936 \| good	23.036 \| good	0.372 \| good
2025-06-06T07:00:00.000Z	64 \| moderate	16.111 \| fine	71.039 \| fine	24.362 \| good	0.649 \| good	12.288 \| good	0.299 \| good
2025-06-06T08:00:00.000Z	64 \| moderate	15.561 \| fine	69.324 \| fine	26.376 \| good	0.695 \| good	14.338 \| good	0.311 \| good
2025-06-06T09:00:00.000Z	60 \| moderate	14.032 \| fine	62.102 \| fine	21.854 \| good	0.741 \| good	16.389 \| good	0.322 \| good
2025-06-06T10:00:00.000Z	77 \| moderate	23.363 \| fine	101.839 \| fine	18.999 \| good	0.6 \| good	7.305 \| good	0.271 \| good
2025-06-06T11:00:00.000Z	73 \| moderate	21.198 \| fine	93.643 \| fine	17.869 \| good	0.632 \| good	8.43 \| good	0.279 \| good
2025-06-06T12:00:00.000Z	75 \| moderate	21.615 \| fine	94.332 \| fine	17.615 \| good	0.663 \| good	9.555 \| good	0.287 \| good
2025-06-06T13:00:00.000Z	77 \| moderate	22.764 \| fine	100.036 \| fine	19.098 \| good	0.73 \| good	7.243 \| good	0.277 \| good
2025-06-06T14:00:00.000Z	71 \| moderate	20.434 \| fine	90.334 \| fine	23.716 \| good	0.761 \| good	8.682 \| good	0.285 \| good

Maryland Heights

Get reliable air quality data to drive your business

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

0.20ppm

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 07:00:00 on 2025-06-04.

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 12:00:00 on 2025-06-04.

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

The current air quality in Maryland Heights, Missouri is 49, categorized as Good 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 8.756 μg/m³.

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

The current PM₁₀ concentration at Maryland Heights, Missouri is 38.048 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 0.2 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 0.352 ppb.

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

The current ozone (O₃) concentration at Maryland Heights, Missouri is 33.959 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 2.78 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-03T00:00:00.000Z	60 \| moderate	14.057 \| fine	62.833 \| fine	50.97 \| good	0.307 \| good	9.462 \| good	0.31 \| good
2025-06-03T01:00:00.000Z	56 \| moderate	11.87 \| good	49.533 \| good	46.029 \| good	0.332 \| good	9.278 \| good	0.314 \| good
2025-06-03T02:00:00.000Z	54 \| moderate	11.117 \| good	43.045 \| good	41.608 \| good	0.368 \| good	7.901 \| good	0.258 \| good
2025-06-03T03:00:00.000Z	44 \| good	8.193 \| good	33.789 \| good	39.649 \| good	0.411 \| good	7.974 \| good	0.258 \| good
2025-06-03T04:00:00.000Z	44 \| good	7.741 \| good	25.603 \| good	42.636 \| good	1.25 \| good	8.86 \| good	0.258 \| good
2025-06-03T05:00:00.000Z	49 \| good	8.736 \| good	38.551 \| good	35.787 \| good	0.742 \| good	7.362 \| good	0.255 \| good
2025-06-03T06:00:00.000Z	52 \| moderate	10.066 \| good	45.652 \| good	35.053 \| good	0.828 \| good	7.844 \| good	0.258 \| good
2025-06-03T07:00:00.000Z	52 \| moderate	9.513 \| good	24.018 \| good	32.72 \| good	0.711 \| good	7.377 \| good	0.262 \| good
2025-06-03T08:00:00.000Z	52 \| moderate	9.908 \| good	45.938 \| good	31.104 \| good	0.804 \| good	7.577 \| good	0.255 \| good
2025-06-03T09:00:00.000Z	49 \| good	9.059 \| good	37.54 \| good	30.359 \| good	0.919 \| good	6.208 \| good	0.221 \| good
2025-06-03T10:00:00.000Z	49 \| good	9.441 \| good	37.8 \| good	31.754 \| good	1.049 \| good	6.032 \| good	0.166 \| good
2025-06-03T11:00:00.000Z	49 \| good	9.307 \| good	40.737 \| good	33.444 \| good	0.949 \| good	10.447 \| good	0.221 \| good
2025-06-03T12:00:00.000Z	49 \| good	9.226 \| good	40.852 \| good	32.632 \| good	0.94 \| good	10.387 \| good	0.225 \| good
2025-06-03T13:00:00.000Z	52 \| moderate	9.69 \| good	44.966 \| good	33.161 \| good	0.286 \| good	12.46 \| good	0.314 \| good
2025-06-03T14:00:00.000Z	52 \| moderate	10.129 \| good	55.755 \| fine	36.031 \| good	0.82 \| good	9.785 \| good	0.28 \| good
2025-06-03T15:00:00.000Z	54 \| moderate	11.314 \| good	49.655 \| good	37.437 \| good	0.998 \| good	7.198 \| good	0.258 \| good
2025-06-03T16:00:00.000Z	58 \| moderate	12.952 \| fine	53.011 \| good	41.609 \| good	0.205 \| good	6.668 \| good	0.255 \| good
2025-06-03T17:00:00.000Z	58 \| moderate	12.602 \| fine	53.366 \| good	44.206 \| good	0.198 \| good	6.369 \| good	0.255 \| good
2025-06-03T18:00:00.000Z	54 \| moderate	10.821 \| good	46.441 \| good	44.043 \| good	0.182 \| good	5.982 \| good	0.255 \| good
2025-06-03T19:00:00.000Z	60 \| moderate	14.066 \| fine	57.841 \| fine	45.662 \| good	0.642 \| good	7.155 \| good	0.255 \| good
2025-06-03T20:00:00.000Z	60 \| moderate	14.227 \| fine	53.283 \| good	43.532 \| good	0.648 \| good	6.965 \| good	0.251 \| good
2025-06-03T21:00:00.000Z	60 \| moderate	14.41 \| fine	55.604 \| fine	42.425 \| good	0.636 \| good	5.799 \| good	0.314 \| good
2025-06-03T22:00:00.000Z	60 \| moderate	14.425 \| fine	58.414 \| fine	43.488 \| good	0.651 \| good	5.425 \| good	0.255 \| good
2025-06-03T23:00:00.000Z	60 \| moderate	13.957 \| fine	54.209 \| good	43.728 \| good	0.182 \| good	5.918 \| good	0.255 \| good
2025-06-04T00:00:00.000Z	56 \| moderate	12.016 \| good	35.895 \| good	42.986 \| good	0.634 \| good	4.639 \| good	0.258 \| good
2025-06-04T01:00:00.000Z	56 \| moderate	12.131 \| fine	43.654 \| good	44.605 \| good	0.637 \| good	5.617 \| good	0.255 \| good
2025-06-04T02:00:00.000Z	56 \| moderate	11.514 \| good	43.941 \| good	42.017 \| good	0.582 \| good	6.538 \| good	0.258 \| good
2025-06-04T03:00:00.000Z	44 \| good	7.957 \| good	34.996 \| good	46.438 \| good	0.816 \| good	4.812 \| good	0.25 \| good
2025-06-04T04:00:00.000Z	60 \| moderate	14.01 \| fine	60.626 \| fine	41.484 \| good	0.443 \| good	7.154 \| good	0.255 \| good
2025-06-04T05:00:00.000Z	62 \| moderate	14.677 \| fine	59.725 \| fine	38.647 \| good	0.382 \| good	6.375 \| good	0.276 \| good
2025-06-04T06:00:00.000Z	67 \| moderate	17.556 \| fine	70.502 \| fine	40.822 \| good	0.478 \| good	5.756 \| good	0.272 \| good
2025-06-04T07:00:00.000Z	67 \| moderate	17.764 \| fine	46.96 \| good	40.777 \| good	0.474 \| good	5.633 \| good	0.276 \| good
2025-06-04T08:00:00.000Z	60 \| moderate	13.618 \| fine	49.944 \| good	40.244 \| good	0.475 \| good	5.656 \| good	0.272 \| good
2025-06-04T09:00:00.000Z	39 \| good	4.844 \| good	26.768 \| good	41.951 \| good	0.706 \| good	5.517 \| good	0.128 \| good
2025-06-04T10:00:00.000Z	40 \| good	2.582 \| good	10.597 \| good	43.321 \| good	0.419 \| good	5.705 \| good	0.183 \| good
2025-06-04T11:00:00.000Z	41 \| good	2.84 \| good	11.01 \| good	43.524 \| good	0.164 \| good	10.77 \| good	0.19 \| good
2025-06-04T12:00:00.000Z	37 \| good	2.265 \| good	8.169 \| good	40.449 \| good	0.602 \| good	14.921 \| good	0.272 \| good
2025-06-04T13:00:00.000Z	49 \| good	8.756 \| good	38.048 \| good	33.959 \| good	0.352 \| good	2.78 \| good	0.2 \| good
2025-06-04T14:00:00.000Z	37 \| good	3.57 \| good	27.032 \| good	40.293 \| good	0.571 \| good	26.316 \| good	0.346 \| good
2025-06-04T15:00:00.000Z	41 \| good	6.134 \| good	43.533 \| good	34.852 \| good	0.646 \| good	19.976 \| good	0.345 \| good
2025-06-04T16:00:00.000Z	35 \| good	4.564 \| good	38.128 \| good	37.052 \| good	0.175 \| good	15.827 \| good	0.331 \| good
2025-06-04T17:00:00.000Z	32 \| good	4.234 \| good	25.617 \| good	35.325 \| good	0.18 \| good	11.656 \| good	0.328 \| good
2025-06-04T18:00:00.000Z	38 \| good	7.158 \| good	16.736 \| good	34.847 \| good	0.36 \| good	8.417 \| good	0.279 \| good
2025-06-04T19:00:00.000Z	49 \| good	9.427 \| good	37.426 \| good	36.41 \| good	0.203 \| good	9.625 \| good	0.285 \| good
2025-06-04T20:00:00.000Z	58 \| moderate	12.949 \| fine	45.225 \| good	33.478 \| good	0.205 \| good	12.231 \| good	0.324 \| good
2025-06-04T21:00:00.000Z	54 \| moderate	11.484 \| good	43.897 \| good	38.128 \| good	0.174 \| good	7.879 \| good	0.272 \| good
2025-06-04T22:00:00.000Z	44 \| good	8.003 \| good	41.506 \| good	35.05 \| good	0.525 \| good	14.821 \| good	0.183 \| good
2025-06-04T23:00:00.000Z	33 \| good	6.159 \| good	36.04 \| good	34.379 \| good	0.49 \| good	14.627 \| good	0.272 \| good
2025-06-04T14:00:00.000Z	49 \| good	8.756 \| good	38.048 \| good	33.959 \| good	0.352 \| good	2.78 \| good	0.2 \| good
2025-06-04T15:00:00.000Z	49 \| good	8.811 \| good	38.543 \| good	39.055 \| good	0.49 \| good	4.225 \| good	0.21 \| good
2025-06-04T16:00:00.000Z	43 \| good	6.146 \| good	27.23 \| good	46.241 \| good	0.396 \| good	1.672 \| good	0.19 \| good
2025-06-04T17:00:00.000Z	38 \| good	4.985 \| good	21.379 \| good	40.897 \| good	0.526 \| good	2.131 \| good	0.199 \| good
2025-06-04T18:00:00.000Z	54 \| moderate	11.213 \| good	49.591 \| good	40.177 \| good	0.656 \| good	2.591 \| good	0.207 \| good
2025-06-04T19:00:00.000Z	60 \| moderate	13.987 \| fine	62.69 \| fine	33.681 \| good	0.406 \| good	1.897 \| good	0.194 \| good
2025-06-04T20:00:00.000Z	71 \| moderate	20.236 \| fine	89.395 \| fine	34.886 \| good	0.516 \| good	2.405 \| good	0.199 \| good
2025-06-04T21:00:00.000Z	81 \| moderate	24.59 \| fine	107.871 \| fine	41.745 \| good	0.626 \| good	2.913 \| good	0.204 \| good
2025-06-04T22:00:00.000Z	79 \| moderate	24.091 \| fine	104.607 \| fine	43.36 \| good	0.323 \| good	3.221 \| good	0.211 \| good
2025-06-04T23:00:00.000Z	77 \| moderate	22.844 \| fine	100.486 \| fine	45.07 \| good	0.427 \| good	4.369 \| good	0.223 \| good
2025-06-05T00:00:00.000Z	82 \| moderate	26.062 \| fine	113.216 \| fine	46.628 \| good	0.532 \| good	5.518 \| good	0.234 \| good
2025-06-05T01:00:00.000Z	81 \| moderate	25.449 \| fine	110.893 \| fine	38.984 \| good	0.425 \| good	8.196 \| good	0.253 \| good
2025-06-05T02:00:00.000Z	86 \| moderate	28.314 \| fine	122.477 \| fine	37.107 \| good	0.561 \| good	11.926 \| good	0.285 \| good
2025-06-05T03:00:00.000Z	96 \| moderate	33.108 \| fine	142.493 \| fine	34.395 \| good	0.697 \| good	15.656 \| good	0.317 \| good
2025-06-05T04:00:00.000Z	102 \| sensitive	35.681 \| moderate	155.089 \| moderate	37.225 \| good	0.536 \| good	5.144 \| good	0.229 \| good
2025-06-05T05:00:00.000Z	110 \| sensitive	38.654 \| moderate	170.11 \| moderate	38.315 \| good	0.632 \| good	6.47 \| good	0.243 \| good
2025-06-05T06:00:00.000Z	117 \| sensitive	42.114 \| moderate	186.768 \| moderate	37.711 \| good	0.729 \| good	7.797 \| good	0.256 \| good
2025-06-05T07:00:00.000Z	122 \| sensitive	43.853 \| moderate	195.298 \| moderate	34.146 \| good	0.77 \| good	4.317 \| good	0.22 \| good
2025-06-05T08:00:00.000Z	117 \| sensitive	42.388 \| moderate	188.092 \| moderate	32.705 \| good	0.845 \| good	4.89 \| good	0.226 \| good
2025-06-05T09:00:00.000Z	105 \| sensitive	37.336 \| moderate	163.841 \| moderate	30.681 \| good	0.921 \| good	5.464 \| good	0.232 \| good
2025-06-05T10:00:00.000Z	107 \| sensitive	37.852 \| moderate	165.679 \| moderate	27.47 \| good	0.894 \| good	4.006 \| good	0.214 \| good
2025-06-05T11:00:00.000Z	102 \| sensitive	35.887 \| moderate	157 \| moderate	27.127 \| good	0.971 \| good	4.485 \| good	0.218 \| good
2025-06-05T12:00:00.000Z	102 \| sensitive	35.914 \| moderate	156.989 \| moderate	26.118 \| good	1.049 \| good	4.963 \| good	0.222 \| good
2025-06-05T13:00:00.000Z	110 \| sensitive	39.094 \| moderate	172.934 \| moderate	25.937 \| good	1.099 \| good	2.429 \| good	0.214 \| good
2025-06-05T14:00:00.000Z	117 \| sensitive	42.076 \| moderate	187.383 \| moderate	25.538 \| good	1.208 \| good	2.958 \| good	0.22 \| good
2025-06-05T15:00:00.000Z	112 \| sensitive	39.615 \| moderate	175.748 \| moderate	29.247 \| good	1.317 \| good	3.487 \| good	0.226 \| good
2025-06-05T16:00:00.000Z	105 \| sensitive	37.097 \| moderate	162.374 \| moderate	32.973 \| good	0.763 \| good	1.156 \| good	0.181 \| good
2025-06-05T17:00:00.000Z	99 \| moderate	34.5 \| fine	148.859 \| fine	33.678 \| good	0.897 \| good	1.381 \| good	0.184 \| good
2025-06-05T18:00:00.000Z	96 \| moderate	32.894 \| fine	142.133 \| fine	34.972 \| good	1.03 \| good	1.606 \| good	0.188 \| good
2025-06-05T19:00:00.000Z	88 \| moderate	29.496 \| fine	127.677 \| fine	37.78 \| good	0.53 \| good	1.01 \| good	0.172 \| good
2025-06-05T20:00:00.000Z	86 \| moderate	27.559 \| fine	119.843 \| fine	39.763 \| good	0.68 \| good	1.152 \| good	0.175 \| good
2025-06-05T21:00:00.000Z	69 \| moderate	19.449 \| fine	86.091 \| fine	41.775 \| good	0.83 \| good	1.293 \| good	0.178 \| good
2025-06-05T22:00:00.000Z	64 \| moderate	16.494 \| fine	73.144 \| fine	42.565 \| good	0.444 \| good	3.296 \| good	0.195 \| good
2025-06-05T23:00:00.000Z	62 \| moderate	15 \| fine	67.077 \| fine	41.101 \| good	0.586 \| good	4.282 \| good	0.206 \| good
2025-06-06T00:00:00.000Z	66 \| moderate	17.465 \| fine	77.089 \| fine	46.902 \| good	0.728 \| good	5.267 \| good	0.216 \| good
2025-06-06T01:00:00.000Z	67 \| moderate	17.741 \| fine	78.753 \| fine	37.188 \| good	0.616 \| good	10.674 \| good	0.275 \| good
2025-06-06T02:00:00.000Z	69 \| moderate	19.009 \| fine	84.581 \| fine	31.986 \| good	0.723 \| good	12.719 \| good	0.289 \| good
2025-06-06T03:00:00.000Z	77 \| moderate	22.615 \| fine	98.67 \| fine	26.58 \| good	0.829 \| good	14.763 \| good	0.304 \| good
2025-06-06T04:00:00.000Z	79 \| moderate	23.546 \| fine	103.539 \| fine	23.283 \| good	0.787 \| good	17.124 \| good	0.337 \| good
2025-06-06T05:00:00.000Z	71 \| moderate	19.666 \| fine	87.117 \| fine	21.869 \| good	0.862 \| good	20.08 \| good	0.355 \| good
2025-06-06T06:00:00.000Z	66 \| moderate	17.233 \| fine	76.71 \| fine	20.818 \| good	0.936 \| good	23.036 \| good	0.372 \| good
2025-06-06T07:00:00.000Z	64 \| moderate	16.111 \| fine	71.039 \| fine	24.362 \| good	0.649 \| good	12.288 \| good	0.299 \| good
2025-06-06T08:00:00.000Z	64 \| moderate	15.561 \| fine	69.324 \| fine	26.376 \| good	0.695 \| good	14.338 \| good	0.311 \| good
2025-06-06T09:00:00.000Z	60 \| moderate	14.032 \| fine	62.102 \| fine	21.854 \| good	0.741 \| good	16.389 \| good	0.322 \| good
2025-06-06T10:00:00.000Z	77 \| moderate	23.363 \| fine	101.839 \| fine	18.999 \| good	0.6 \| good	7.305 \| good	0.271 \| good
2025-06-06T11:00:00.000Z	73 \| moderate	21.198 \| fine	93.643 \| fine	17.869 \| good	0.632 \| good	8.43 \| good	0.279 \| good
2025-06-06T12:00:00.000Z	75 \| moderate	21.615 \| fine	94.332 \| fine	17.615 \| good	0.663 \| good	9.555 \| good	0.287 \| good
2025-06-06T13:00:00.000Z	77 \| moderate	22.764 \| fine	100.036 \| fine	19.098 \| good	0.73 \| good	7.243 \| good	0.277 \| good
2025-06-06T14:00:00.000Z	71 \| moderate	20.434 \| fine	90.334 \| fine	23.716 \| good	0.761 \| good	8.682 \| good	0.285 \| good

Live air quality index in Maryland Heights, Missouri today

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

St. Ann, Missouri

Creve Coeur, Missouri

Overland, Missouri

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Hazelwood, Missouri

University City, Missouri

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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