What is the PM10 level in St. Marys, Pennsylvania at the moment?

The PM10 concentration in St. Marys, Pennsylvania is 4.062 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in St. Marys, Pennsylvania at the moment?

Currently, St. Marys, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.657 ppb.

What is the ozone (O3) level in St. Marys, Pennsylvania at the moment?

The current ozone (O3) level in St. Marys, Pennsylvania at the moment is 30.962 ppm.

What is the nitrogen dioxide (NO2) level in St. Marys, Pennsylvania at the moment?

Nitrogen dioxide (NO2) level in St. Marys, Pennsylvania at the moment is 2.191 ppb.

Live air quality index in St. Marys, Pennsylvania today

Q: What is the PM2.5 level in St. Marys, Pennsylvania at the moment?

PM2.5 levels in St. Marys, Pennsylvania are currently 0.695 μg/m3.

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

St. Marys, Pennsylvania

Last updated: ... (Local time)

Major air pollutants in St. Marys, Pennsylvania

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

0.69 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

4.06 μg/m³

155

255

425

605+

Ozone (O₃)

30.96 ppb

201

201+

Sulfur Dioxide (SO₂)

0.66 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.19 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.15 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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St. Marys, Pennsylvania

Scroll To Air Quality Map

Track live St. Marys, Pennsylvania air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-10T11:00:00.000Z	32 \| good	4.904 \| good	19.414 \| good	34.963 \| good	0.714 \| good	3.935 \| good	0.315 \| good
2026-03-10T12:00:00.000Z	29 \| good	5.355 \| good	22.357 \| good	30.586 \| good	0.724 \| good	2.79 \| good	0.331 \| good
2026-03-10T13:00:00.000Z	33 \| good	5.639 \| good	24.924 \| good	21.368 \| good	1.401 \| good	4.204 \| good	0.379 \| good
2026-03-10T14:00:00.000Z	29 \| good	4.876 \| good	22.247 \| good	30.681 \| good	1.656 \| good	7.076 \| good	0.595 \| good
2026-03-10T15:00:00.000Z	33 \| good	5.696 \| good	32.01 \| good	34.704 \| good	1.546 \| good	5.385 \| good	0.486 \| good
2026-03-10T16:00:00.000Z	28 \| good	5.06 \| good	23.827 \| good	30.17 \| good	1.574 \| good	4.214 \| good	0.473 \| good
2026-03-10T17:00:00.000Z	33 \| good	5.828 \| good	28.226 \| good	32.883 \| good	0.96 \| good	9.193 \| good	0.371 \| good
2026-03-10T18:00:00.000Z	33 \| good	5.632 \| good	26.94 \| good	36.093 \| good	0.764 \| good	4.099 \| good	0.244 \| good
2026-03-10T19:00:00.000Z	35 \| good	5.554 \| good	25.503 \| good	37.703 \| good	0.589 \| good	2.834 \| good	0.211 \| good
2026-03-10T20:00:00.000Z	38 \| good	6.545 \| good	27.942 \| good	41.051 \| good	0.533 \| good	2.141 \| good	0.202 \| good
2026-03-10T21:00:00.000Z	38 \| good	6.641 \| good	29.407 \| good	39.467 \| good	0.426 \| good	1.75 \| good	0.22 \| good
2026-03-10T22:00:00.000Z	41 \| good	6.017 \| good	25.198 \| good	44.38 \| good	0.442 \| good	2.12 \| good	0.209 \| good
2026-03-10T23:00:00.000Z	35 \| good	6.302 \| good	27.351 \| good	38.404 \| good	0.62 \| good	3.519 \| good	0.239 \| good
2026-03-11T00:00:00.000Z	33 \| good	6.052 \| good	25.428 \| good	34.8 \| good	0.3 \| good	3.34 \| good	0.248 \| good
2026-03-11T01:00:00.000Z	35 \| good	6.132 \| good	29.039 \| good	38.084 \| good	0.386 \| good	4.169 \| good	0.243 \| good
2026-03-11T02:00:00.000Z	44 \| good	8.228 \| good	38.689 \| good	34.939 \| good	0.353 \| good	4.264 \| good	0.28 \| good
2026-03-11T03:00:00.000Z	38 \| good	6.863 \| good	30.002 \| good	32.151 \| good	0.542 \| good	3.62 \| good	0.262 \| good
2026-03-11T04:00:00.000Z	38 \| good	6.588 \| good	30.581 \| good	26.613 \| good	0.548 \| good	3.288 \| good	0.26 \| good
2026-03-11T05:00:00.000Z	44 \| good	8.33 \| good	32.942 \| good	27.131 \| good	2.568 \| good	3.922 \| good	0.241 \| good
2026-03-11T06:00:00.000Z	44 \| good	7.778 \| good	38.082 \| good	25.244 \| good	0.756 \| good	5.92 \| good	0.247 \| good
2026-03-11T07:00:00.000Z	49 \| good	8.748 \| good	33.08 \| good	28.06 \| good	1.097 \| good	4.897 \| good	0.219 \| good
2026-03-11T08:00:00.000Z	49 \| good	8.604 \| good	36.025 \| good	26.869 \| good	1.304 \| good	4.84 \| good	0.224 \| good
2026-03-11T09:00:00.000Z	44 \| good	7.67 \| good	33.123 \| good	26.277 \| good	1.957 \| good	5.128 \| good	0.229 \| good
2026-03-11T10:00:00.000Z	53 \| moderate	8.044 \| good	58.883 \| fine	25.769 \| good	1.146 \| good	1.773 \| good	0.224 \| good
2026-03-11T11:00:00.000Z	44 \| good	8.446 \| good	40.742 \| good	25.331 \| good	3.365 \| good	1.972 \| good	0.252 \| good
2026-03-11T12:00:00.000Z	44 \| good	8.004 \| good	38.589 \| good	31.745 \| good	0.583 \| good	2.926 \| good	0.279 \| good
2026-03-11T13:00:00.000Z	38 \| good	7.107 \| good	23.719 \| good	26.273 \| good	0.563 \| good	3.052 \| good	0.318 \| good
2026-03-11T14:00:00.000Z	33 \| good	5.808 \| good	32.587 \| good	26.017 \| good	0.387 \| good	4.434 \| good	0.32 \| good
2026-03-11T15:00:00.000Z	29 \| good	5.369 \| good	30.977 \| good	23.813 \| good	0.524 \| good	3.839 \| good	0.291 \| good
2026-03-11T16:00:00.000Z	33 \| good	5.828 \| good	26.401 \| good	23.821 \| good	0.602 \| good	4.619 \| good	0.265 \| good
2026-03-11T17:00:00.000Z	33 \| good	5.501 \| good	24.968 \| good	26.239 \| good	0.745 \| good	4.118 \| good	0.281 \| good
2026-03-11T18:00:00.000Z	33 \| good	5.891 \| good	21.887 \| good	24.814 \| good	0.722 \| good	4.07 \| good	0.258 \| good
2026-03-11T19:00:00.000Z	27 \| good	5.31 \| good	25.333 \| good	26.364 \| good	0.729 \| good	4.181 \| good	0.228 \| good
2026-03-11T20:00:00.000Z	27 \| good	5.197 \| good	24.735 \| good	28.989 \| good	0.512 \| good	5.105 \| good	0.258 \| good
2026-03-11T21:00:00.000Z	29 \| good	5.373 \| good	19.715 \| good	31.38 \| good	0.493 \| good	5.156 \| good	0.244 \| good
2026-03-11T22:00:00.000Z	29 \| good	4.272 \| good	18.333 \| good	30.831 \| good	0.672 \| good	4.208 \| good	0.255 \| good
2026-03-11T23:00:00.000Z	31 \| good	3.987 \| good	17.672 \| good	33.427 \| good	0.753 \| good	4.106 \| good	0.318 \| good
2026-03-12T00:00:00.000Z	30 \| good	3.812 \| good	18.374 \| good	31.85 \| good	0.671 \| good	2.538 \| good	0.261 \| good
2026-03-12T01:00:00.000Z	31 \| good	3.747 \| good	18.229 \| good	33.759 \| good	0.678 \| good	2.646 \| good	0.224 \| good
2026-03-12T02:00:00.000Z	27 \| good	4.253 \| good	18.046 \| good	29.344 \| good	0.351 \| good	2.626 \| good	0.264 \| good
2026-03-12T03:00:00.000Z	29 \| good	2.954 \| good	12.79 \| good	31.323 \| good	0.313 \| good	2.804 \| good	0.225 \| good
2026-03-12T04:00:00.000Z	30 \| good	2.201 \| good	14.495 \| good	32.387 \| good	0.442 \| good	2.98 \| good	0.235 \| good
2026-03-12T05:00:00.000Z	28 \| good	1.6 \| good	7.475 \| good	29.805 \| good	0.589 \| good	2.644 \| good	0.177 \| good
2026-03-12T06:00:00.000Z	28 \| good	2.276 \| good	11.047 \| good	30.168 \| good	0.574 \| good	1.712 \| good	0.154 \| good
2026-03-12T07:00:00.000Z	27 \| good	1.501 \| good	8.168 \| good	29.123 \| good	0.555 \| good	1.504 \| good	0.134 \| good
2026-03-12T08:00:00.000Z	27 \| good	0.702 \| good	4.893 \| good	29.403 \| good	0.554 \| good	1.489 \| good	0.164 \| good
2026-03-12T09:00:00.000Z	24 \| good	0.73 \| good	5.165 \| good	26.113 \| good	0.532 \| good	1.673 \| good	0.171 \| good
2026-03-12T10:00:00.000Z	29 \| good	0.695 \| good	4.062 \| good	30.962 \| good	0.657 \| good	2.191 \| good	0.152 \| good
2026-03-12T10:00:00.000Z	29 \| good	0.695 \| good	4.062 \| good	30.962 \| good	0.657 \| good	2.191 \| good	0.152 \| good
2026-03-12T11:00:00.000Z	31 \| good	0.679 \| good	2.084 \| good	34.134 \| good	0.113 \| good	0.465 \| good	0.142 \| good
2026-03-12T12:00:00.000Z	31 \| good	0.914 \| good	3.845 \| good	33.661 \| good	0.099 \| good	0.415 \| good	0.144 \| good
2026-03-12T13:00:00.000Z	31 \| good	0.971 \| good	4 \| good	34.066 \| good	0.119 \| good	0.438 \| good	0.145 \| good
2026-03-12T14:00:00.000Z	32 \| good	1.009 \| good	4 \| good	34.789 \| good	0.138 \| good	0.461 \| good	0.146 \| good
2026-03-12T15:00:00.000Z	33 \| good	0.916 \| good	3.845 \| good	36.363 \| good	0.158 \| good	0.484 \| good	0.148 \| good
2026-03-12T16:00:00.000Z	37 \| good	0.847 \| good	3.03 \| good	40.031 \| good	0.183 \| good	0.45 \| good	0.147 \| good
2026-03-12T17:00:00.000Z	38 \| good	0.962 \| good	3.969 \| good	41.484 \| good	0.209 \| good	0.416 \| good	0.146 \| good
2026-03-12T18:00:00.000Z	37 \| good	0.97 \| good	4 \| good	39.989 \| good	0.234 \| good	0.382 \| good	0.145 \| good
2026-03-12T19:00:00.000Z	40 \| good	0.874 \| good	3.464 \| good	43.222 \| good	0.257 \| good	0.4 \| good	0.143 \| good
2026-03-12T20:00:00.000Z	40 \| good	0.745 \| good	2.971 \| good	43.096 \| good	0.28 \| good	0.418 \| good	0.141 \| good
2026-03-12T21:00:00.000Z	38 \| good	0.368 \| good	1.141 \| good	40.775 \| good	0.303 \| good	0.436 \| good	0.139 \| good
2026-03-12T22:00:00.000Z	39 \| good	0.355 \| good	1.112 \| good	41.688 \| good	0.34 \| good	0.758 \| good	0.142 \| good
2026-03-12T23:00:00.000Z	36 \| good	0.723 \| good	2.845 \| good	39.46 \| good	0.377 \| good	1.08 \| good	0.146 \| good
2026-03-13T00:00:00.000Z	36 \| good	0.402 \| good	1.763 \| good	39.296 \| good	0.414 \| good	1.401 \| good	0.149 \| good
2026-03-13T01:00:00.000Z	37 \| good	0.655 \| good	2.185 \| good	40.476 \| good	0.475 \| good	1.641 \| good	0.153 \| good
2026-03-13T02:00:00.000Z	41 \| good	0.691 \| good	2.216 \| good	44.186 \| good	0.537 \| good	1.881 \| good	0.157 \| good
2026-03-13T03:00:00.000Z	39 \| good	0.693 \| good	2.409 \| good	41.804 \| good	0.599 \| good	2.121 \| good	0.16 \| good
2026-03-13T04:00:00.000Z	33 \| good	1 \| good	4 \| good	36.403 \| good	0.641 \| good	2.214 \| good	0.163 \| good
2026-03-13T05:00:00.000Z	34 \| good	1.586 \| good	6.41 \| good	36.752 \| good	0.684 \| good	2.307 \| good	0.165 \| good
2026-03-13T06:00:00.000Z	31 \| good	2.652 \| good	10.701 \| good	34.306 \| good	0.727 \| good	2.399 \| good	0.167 \| good
2026-03-13T07:00:00.000Z	30 \| good	3.479 \| good	15.388 \| good	32.208 \| good	0.86 \| good	2.401 \| good	0.168 \| good
2026-03-13T08:00:00.000Z	27 \| good	4.183 \| good	18.388 \| good	29.335 \| good	0.992 \| good	2.403 \| good	0.169 \| good
2026-03-13T09:00:00.000Z	26 \| good	4.439 \| good	19.387 \| good	28.424 \| good	1.125 \| good	2.405 \| good	0.17 \| good
2026-03-13T10:00:00.000Z	30 \| good	5.087 \| good	21.984 \| good	31.602 \| good	1.838 \| good	2.608 \| good	0.169 \| good
2026-03-13T11:00:00.000Z	30 \| good	5.429 \| good	23.378 \| good	31.788 \| good	2.551 \| good	2.811 \| good	0.169 \| good
2026-03-13T12:00:00.000Z	32 \| good	4.841 \| good	21 \| good	34.95 \| good	3.264 \| good	3.013 \| good	0.169 \| good
2026-03-13T13:00:00.000Z	34 \| good	4.381 \| good	19.102 \| good	36.598 \| good	2.983 \| good	3.02 \| good	0.164 \| good
2026-03-13T14:00:00.000Z	34 \| good	3.355 \| good	14.904 \| good	37.486 \| good	2.703 \| good	3.027 \| good	0.16 \| good
2026-03-13T15:00:00.000Z	36 \| good	2.246 \| good	9.111 \| good	38.872 \| good	2.422 \| good	3.034 \| good	0.156 \| good
2026-03-13T16:00:00.000Z	38 \| good	1.795 \| good	7.453 \| good	40.768 \| good	2.321 \| good	2.656 \| good	0.152 \| good
2026-03-13T17:00:00.000Z	41 \| good	1.466 \| good	5.875 \| good	43.654 \| good	2.22 \| good	2.278 \| good	0.148 \| good
2026-03-13T18:00:00.000Z	43 \| good	2.085 \| good	8.491 \| good	46.154 \| good	2.118 \| good	1.9 \| good	0.144 \| good
2026-03-13T19:00:00.000Z	44 \| good	2.326 \| good	9.874 \| good	47.119 \| good	2.057 \| good	1.701 \| good	0.141 \| good
2026-03-13T20:00:00.000Z	45 \| good	2.744 \| good	11.03 \| good	48.955 \| good	1.995 \| good	1.503 \| good	0.137 \| good
2026-03-13T21:00:00.000Z	44 \| good	2.63 \| good	10.867 \| good	48.238 \| good	1.933 \| good	1.305 \| good	0.133 \| good
2026-03-13T22:00:00.000Z	44 \| good	2.399 \| good	9.94 \| good	46.69 \| good	1.442 \| good	1.362 \| good	0.136 \| good
2026-03-13T23:00:00.000Z	42 \| good	4.134 \| good	18.091 \| good	44.799 \| good	0.951 \| good	1.419 \| good	0.14 \| good
2026-03-14T00:00:00.000Z	37 \| good	2.947 \| good	12.063 \| good	39.63 \| good	0.46 \| good	1.476 \| good	0.144 \| good
2026-03-14T01:00:00.000Z	34 \| good	2.103 \| good	8.516 \| good	36.953 \| good	0.448 \| good	1.413 \| good	0.146 \| good
2026-03-14T02:00:00.000Z	34 \| good	1.927 \| good	8 \| good	37.035 \| good	0.435 \| good	1.35 \| good	0.149 \| good
2026-03-14T03:00:00.000Z	35 \| good	2.068 \| good	8.111 \| good	37.997 \| good	0.422 \| good	1.287 \| good	0.152 \| good
2026-03-14T04:00:00.000Z	34 \| good	1.74 \| good	7 \| good	36.85 \| good	0.404 \| good	1.196 \| good	0.153 \| good
2026-03-14T05:00:00.000Z	34 \| good	1.794 \| good	7.484 \| good	36.996 \| good	0.385 \| good	1.105 \| good	0.154 \| good
2026-03-14T06:00:00.000Z	40 \| good	1.011 \| good	1.018 \| good	42.891 \| good	0.357 \| good	1.004 \| good	0.155 \| good
2026-03-14T07:00:00.000Z	34 \| good	1.216 \| good	5 \| good	36.833 \| good	0.344 \| good	0.944 \| good	0.155 \| good
2026-03-14T08:00:00.000Z	33 \| good	1.036 \| good	4.03 \| good	35.78 \| good	0.322 \| good	0.873 \| good	0.155 \| good
2026-03-14T09:00:00.000Z	33 \| good	1.117 \| good	4.566 \| good	35.696 \| good	0.299 \| good	0.802 \| good	0.155 \| good
2026-03-14T10:00:00.000Z	34 \| good	1.059 \| good	4 \| good	36.999 \| good	0.281 \| good	0.76 \| good	0.154 \| good

St. Marys

Get reliable air quality data to drive your business

St. Marys, Pennsylvania air quality map: Stay updated on AQI near you

0.13ppm

How accurate is Pennsylvania, USA air quality data?

Air quality and pollutant data for Pennsylvania, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for St. Marys, Pennsylvania?

The air quality information for St. Marys, Pennsylvania is updated every hour for accuracy.

What time in the last 24 hours was the air quality in St. Marys, Pennsylvania at its worst?

In the past 24 hours, the air quality in St. Marys, Pennsylvania was at its worst at 10:00:00 on 2026-03-11.

When did St. Marys, Pennsylvania experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in St. Marys, Pennsylvania was observed at 09:00:00 on 2026-03-12.

What is the AQI in St. Marys, Pennsylvania right now?

As of now, the AQI in St. Marys, Pennsylvania is 29, indicating Good conditions.

What is the most common type of pollution in St. Marys, Pennsylvania?

St. Marys, Pennsylvania air has the highest levels of O3.

What should I do in case of poor air quality in St. Marys, Pennsylvania?

Poor air quality in St. Marys, Pennsylvania means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in St. Marys, Pennsylvania at the moment?

PM_2.5 levels in St. Marys, Pennsylvania are currently 0.695 μg/m³.

What is the PM₁₀ level in St. Marys, Pennsylvania at the moment?

The PM₁₀ concentration in St. Marys, Pennsylvania is 4.062 μg/m³ at the moment.

What is the carbon monoxide (CO) level in St. Marys, Pennsylvania at the moment?

The current carbon monoxide (CO) concentration in St. Marys, Pennsylvania is 0.152 ppm.

What is the sulfur dioxide (SO₂) level in St. Marys, Pennsylvania at the moment?

Currently, St. Marys, Pennsylvania has a sulfur dioxide (SO₂) concentration of 0.657 ppb.

What is the ozone (O₃) level in St. Marys, Pennsylvania at the moment?

The current ozone (O₃) level in St. Marys, Pennsylvania at the moment is 30.962 ppm.

What is the nitrogen dioxide (NO₂) level in St. Marys, Pennsylvania at the moment?

Nitrogen dioxide (NO₂) level in St. Marys, Pennsylvania at the moment is 2.191 ppb.

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