What is the current concentration of PM10 in Lower Merion, Pennsylvania?

The current PM10 concentration at Lower Merion, Pennsylvania is 24.412 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Lower Merion, Pennsylvania?

The current sulfur dioxide (SO2) concentration at Lower Merion, Pennsylvania is 0.109 ppb.

What is the current concentration of ozone (O3) in Lower Merion, Pennsylvania?

The current ozone (O3) concentration at Lower Merion, Pennsylvania is 49.85 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Lower Merion, Pennsylvania?

The current nitrogen dioxide (NO2) concentration at Lower Merion, Pennsylvania is 3.711 ppb.

Lower Merion, Pennsylvania live air quality index now

Q: What is the current concentration of PM2.5 in Lower Merion, Pennsylvania?

The current PM2.5 concentration at Lower Merion, Pennsylvania is 5.415 μg/m3.

Stay updated with real-time air quality in Lower Merion, 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

Lower Merion, Pennsylvania

Last updated: ... (Local time)

Major air pollutants in Lower Merion, Pennsylvania

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.42 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

24.41 μg/m³

155

255

425

605+

Ozone (O₃)

49.85 ppb

201

201+

Sulfur Dioxide (SO₂)

0.11 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.71 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Lower Merion, Pennsylvania

Get Live Pollen Counts

Lower Merion, Pennsylvania

Scroll To Air Quality Map

Track live Lower Merion, Pennsylvania air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-22T00:00:00.000Z	44 \| good	8.17 \| good	35.87 \| good	32.592 \| good	0.347 \| good	7.986 \| good	0.423 \| good
2026-07-22T01:00:00.000Z	38 \| good	7.102 \| good	31.906 \| good	30.956 \| good	0.352 \| good	10.384 \| good	0.496 \| good
2026-07-22T02:00:00.000Z	33 \| good	5.836 \| good	25.778 \| good	30.938 \| good	0.348 \| good	8.186 \| good	0.409 \| good
2026-07-22T03:00:00.000Z	27 \| good	5.328 \| good	23.597 \| good	29.323 \| good	0.365 \| good	10.148 \| good	0.392 \| good
2026-07-22T04:00:00.000Z	29 \| good	5.314 \| good	23.551 \| good	30.922 \| good	0.361 \| good	9.888 \| good	0.392 \| good
2026-07-22T05:00:00.000Z	28 \| good	5.277 \| good	23.304 \| good	29.844 \| good	0.384 \| good	9.354 \| good	0.379 \| good
2026-07-22T06:00:00.000Z	27 \| good	5.204 \| good	23.008 \| good	28.531 \| good	0.445 \| good	5.357 \| good	0.366 \| good
2026-07-22T07:00:00.000Z	27 \| good	5.051 \| good	22.356 \| good	28.539 \| good	0.445 \| good	5.584 \| good	0.366 \| good
2026-07-22T08:00:00.000Z	27 \| good	4.911 \| good	21.767 \| good	26.362 \| good	0.356 \| good	4.882 \| good	0.303 \| good
2026-07-22T09:00:00.000Z	27 \| good	5.038 \| good	22.406 \| good	25.719 \| good	0.361 \| good	6.215 \| good	0.323 \| good
2026-07-22T10:00:00.000Z	27 \| good	5.064 \| good	22.338 \| good	25.465 \| good	0.451 \| good	10.841 \| good	0.323 \| good
2026-07-22T11:00:00.000Z	27 \| good	5.051 \| good	22.193 \| good	24.199 \| good	0.451 \| good	7.735 \| good	0.379 \| good
2026-07-22T12:00:00.000Z	27 \| good	5.046 \| good	22.473 \| good	23.424 \| good	0.613 \| good	9.35 \| good	0.445 \| good
2026-07-22T13:00:00.000Z	27 \| good	5.069 \| good	22.555 \| good	23.678 \| good	0.572 \| good	14.936 \| good	0.445 \| good
2026-07-22T14:00:00.000Z	33 \| good	5.765 \| good	24.914 \| good	25.651 \| good	0.548 \| good	9.672 \| good	0.416 \| good
2026-07-22T15:00:00.000Z	38 \| good	6.83 \| good	30.435 \| good	28.508 \| good	0.511 \| good	8.887 \| good	0.419 \| good
2026-07-22T16:00:00.000Z	44 \| good	8.327 \| good	37.072 \| good	32.747 \| good	0.418 \| good	7.554 \| good	0.419 \| good
2026-07-22T17:00:00.000Z	49 \| good	9.462 \| good	41.82 \| good	36.299 \| good	0.395 \| good	7.115 \| good	0.419 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	10.249 \| good	46.141 \| good	40.014 \| good	0.439 \| good	6.466 \| good	0.399 \| good
2026-07-22T19:00:00.000Z	54 \| moderate	10.628 \| good	47.525 \| good	42.546 \| good	0.438 \| good	6.878 \| good	0.399 \| good
2026-07-22T20:00:00.000Z	54 \| moderate	10.689 \| good	48.114 \| good	46.996 \| good	0.403 \| good	6.541 \| good	0.399 \| good
2026-07-22T21:00:00.000Z	52 \| moderate	10.435 \| good	46.887 \| good	44.735 \| good	0.398 \| good	8.408 \| good	0.399 \| good
2026-07-22T22:00:00.000Z	52 \| moderate	9.88 \| good	43.762 \| good	44.594 \| good	0.356 \| good	6.706 \| good	0.349 \| good
2026-07-22T23:00:00.000Z	49 \| good	9.29 \| good	41.412 \| good	43.009 \| good	0.46 \| good	5.783 \| good	0.369 \| good
2026-07-23T00:00:00.000Z	49 \| good	9.03 \| good	39.9 \| good	39.793 \| good	0.413 \| good	8.061 \| good	0.356 \| good
2026-07-23T01:00:00.000Z	49 \| good	8.808 \| good	39.529 \| good	35.01 \| good	0.362 \| good	7.197 \| good	0.356 \| good
2026-07-23T02:00:00.000Z	44 \| good	8.422 \| good	37.419 \| good	34.73 \| good	0.356 \| good	5.51 \| good	0.336 \| good
2026-07-23T03:00:00.000Z	19 \| good	0.683 \| good	2.777 \| good	20.556 \| good	0.698 \| good	6.888 \| good	0.201 \| good
2026-07-23T04:00:00.000Z	38 \| good	6.974 \| good	30.56 \| good	31.741 \| good	0.365 \| good	5.189 \| good	0.276 \| good
2026-07-23T05:00:00.000Z	33 \| good	6.18 \| good	27.115 \| good	28.662 \| good	0.365 \| good	4.883 \| good	0.276 \| good
2026-07-23T06:00:00.000Z	27 \| good	5.457 \| good	24.096 \| good	25.982 \| good	0.369 \| good	4.39 \| good	0.263 \| good
2026-07-23T07:00:00.000Z	27 \| good	4.865 \| good	21.595 \| good	25.85 \| good	0.396 \| good	3.833 \| good	0.263 \| good
2026-07-23T08:00:00.000Z	22 \| good	4.286 \| good	19.382 \| good	24.234 \| good	0.359 \| good	4.248 \| good	0.263 \| good
2026-07-23T09:00:00.000Z	22 \| good	3.957 \| good	17.82 \| good	22.916 \| good	0.428 \| good	4.901 \| good	0.263 \| good
2026-07-23T10:00:00.000Z	22 \| good	3.756 \| good	16.456 \| good	22.052 \| good	0.429 \| good	7.992 \| good	0.266 \| good
2026-07-23T11:00:00.000Z	22 \| good	3.71 \| good	16.23 \| good	21.847 \| good	0.515 \| good	9.818 \| good	0.306 \| good
2026-07-23T12:00:00.000Z	22 \| good	3.74 \| good	16.304 \| good	21.132 \| good	0.373 \| good	12.237 \| good	0.343 \| good
2026-07-23T13:00:00.000Z	22 \| good	3.768 \| good	16.523 \| good	23.203 \| good	0.508 \| good	11.363 \| good	0.317 \| good
2026-07-23T14:00:00.000Z	27 \| good	4.572 \| good	18.958 \| good	24.831 \| good	0.504 \| good	9.278 \| good	0.283 \| good
2026-07-23T15:00:00.000Z	27 \| good	3.77 \| good	16.529 \| good	28.728 \| good	0.397 \| good	7.755 \| good	0.28 \| good
2026-07-23T16:00:00.000Z	29 \| good	3.785 \| good	16.604 \| good	31.077 \| good	0.159 \| good	6.909 \| good	0.28 \| good
2026-07-23T17:00:00.000Z	31 \| good	3.973 \| good	17.784 \| good	34.236 \| good	0.166 \| good	5.783 \| good	0.246 \| good
2026-07-23T18:00:00.000Z	35 \| good	3.973 \| good	17.715 \| good	38.006 \| good	0.338 \| good	4.504 \| good	0.266 \| good
2026-07-23T19:00:00.000Z	38 \| good	3.995 \| good	17.864 \| good	41.232 \| good	0.353 \| good	4.663 \| good	0.27 \| good
2026-07-23T20:00:00.000Z	41 \| good	4.154 \| good	18.37 \| good	44.476 \| good	0.166 \| good	2.757 \| good	0.27 \| good
2026-07-23T21:00:00.000Z	43 \| good	4.229 \| good	18.746 \| good	45.744 \| good	0.171 \| good	4.114 \| good	0.27 \| good
2026-07-23T22:00:00.000Z	43 \| good	4.32 \| good	19.266 \| good	46.413 \| good	0.114 \| good	3.454 \| good	0.27 \| good
2026-07-23T23:00:00.000Z	46 \| good	5.415 \| good	24.412 \| good	49.85 \| good	0.109 \| good	3.711 \| good	0.322 \| good
2026-07-24T00:00:00.000Z	56 \| moderate	12.109 \| fine	54.241 \| good	36.317 \| good	0.595 \| good	5.933 \| good	0.165 \| good
2026-07-24T01:00:00.000Z	56 \| moderate	12.014 \| good	54.186 \| good	30.532 \| good	0.534 \| good	8.274 \| good	0.178 \| good
2026-07-24T02:00:00.000Z	52 \| moderate	9.734 \| good	43.638 \| good	32.797 \| good	0.482 \| good	8.657 \| good	0.179 \| good
2026-07-24T03:00:00.000Z	52 \| moderate	9.565 \| good	42.632 \| good	30.51 \| good	0.463 \| good	10.52 \| good	0.187 \| good
2026-07-24T04:00:00.000Z	54 \| moderate	11.269 \| good	50.111 \| good	27.74 \| good	0.451 \| good	12.868 \| good	0.201 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	10.295 \| good	45.718 \| good	21.428 \| good	0.429 \| good	14.008 \| good	0.211 \| good
2026-07-24T06:00:00.000Z	54 \| moderate	10.905 \| good	48.319 \| good	18.682 \| good	0.41 \| good	14.723 \| good	0.213 \| good
2026-07-24T07:00:00.000Z	54 \| moderate	11.415 \| good	50.089 \| good	15.892 \| good	0.397 \| good	15.093 \| good	0.212 \| good
2026-07-24T08:00:00.000Z	54 \| moderate	10.727 \| good	47.529 \| good	14.227 \| good	0.396 \| good	15.574 \| good	0.211 \| good
2026-07-24T09:00:00.000Z	52 \| moderate	10.216 \| good	45.026 \| good	14.92 \| good	0.396 \| good	16.613 \| good	0.214 \| good
2026-07-24T10:00:00.000Z	49 \| good	9.082 \| good	40.557 \| good	13.521 \| good	0.399 \| good	17.875 \| good	0.224 \| good
2026-07-24T11:00:00.000Z	33 \| good	6.101 \| good	27.022 \| good	18.671 \| good	0.394 \| good	16.077 \| good	0.237 \| good
2026-07-24T12:00:00.000Z	22 \| good	4.401 \| good	18.796 \| good	24.399 \| good	0.51 \| good	13.162 \| good	0.231 \| good
2026-07-24T13:00:00.000Z	33 \| good	5.687 \| good	24.648 \| good	28.42 \| good	0.766 \| good	7 \| good	0.179 \| good
2026-07-24T14:00:00.000Z	33 \| good	6.496 \| good	29.202 \| good	32.222 \| good	0.814 \| good	3.655 \| good	0.157 \| good
2026-07-24T15:00:00.000Z	44 \| good	7.675 \| good	33.926 \| good	38.064 \| good	0.73 \| good	1.931 \| good	0.149 \| good
2026-07-24T16:00:00.000Z	42 \| good	6.55 \| good	29.162 \| good	44.861 \| good	0.66 \| good	1.351 \| good	0.149 \| good
2026-07-24T17:00:00.000Z	44 \| good	7.083 \| good	31.061 \| good	47.119 \| good	0.63 \| good	1.174 \| good	0.149 \| good
2026-07-24T18:00:00.000Z	49 \| good	9.109 \| good	40.396 \| good	47.895 \| good	0.614 \| good	1.162 \| good	0.15 \| good
2026-07-24T19:00:00.000Z	43 \| good	4.493 \| good	19.78 \| good	46.435 \| good	0.603 \| good	1.225 \| good	0.151 \| good
2026-07-24T20:00:00.000Z	42 \| good	4.758 \| good	20.777 \| good	45.306 \| good	0.583 \| good	1.277 \| good	0.152 \| good
2026-07-24T21:00:00.000Z	42 \| good	5.568 \| good	23.823 \| good	45.164 \| good	0.558 \| good	1.399 \| good	0.152 \| good
2026-07-24T22:00:00.000Z	40 \| good	5.237 \| good	22.729 \| good	42.791 \| good	0.527 \| good	1.711 \| good	0.153 \| good
2026-07-24T23:00:00.000Z	33 \| good	6.331 \| good	28.419 \| good	36.215 \| good	0.487 \| good	2.305 \| good	0.153 \| good
2026-07-25T00:00:00.000Z	49 \| good	8.929 \| good	40.241 \| good	30.911 \| good	0.444 \| good	3.222 \| good	0.152 \| good
2026-07-25T01:00:00.000Z	49 \| good	9.372 \| good	41.61 \| good	21.825 \| good	0.399 \| good	3.565 \| good	0.146 \| good
2026-07-25T02:00:00.000Z	52 \| moderate	10.213 \| good	45.142 \| good	18.876 \| good	0.37 \| good	4.529 \| good	0.144 \| good
2026-07-25T03:00:00.000Z	49 \| good	8.774 \| good	39.23 \| good	17.934 \| good	0.37 \| good	6.078 \| good	0.145 \| good
2026-07-25T04:00:00.000Z	44 \| good	7.615 \| good	33.337 \| good	15.727 \| good	0.382 \| good	8.95 \| good	0.157 \| good
2026-07-25T05:00:00.000Z	27 \| good	5.432 \| good	23.518 \| good	13.997 \| good	0.403 \| good	11.067 \| good	0.17 \| good
2026-07-25T06:00:00.000Z	16 \| good	2.997 \| good	12.784 \| good	14.979 \| good	0.429 \| good	14.04 \| good	0.182 \| good
2026-07-25T07:00:00.000Z	16 \| good	2.518 \| good	9.99 \| good	15.799 \| good	0.466 \| good	16.549 \| good	0.191 \| good
2026-07-25T08:00:00.000Z	15 \| good	1.849 \| good	7.636 \| good	16.228 \| good	0.515 \| good	15.439 \| good	0.187 \| good
2026-07-25T09:00:00.000Z	14 \| good	1.376 \| good	5.581 \| good	12.629 \| good	0.562 \| good	15.169 \| good	0.186 \| good
2026-07-25T10:00:00.000Z	14 \| good	1.318 \| good	5.355 \| good	14.023 \| good	0.593 \| good	15.118 \| good	0.189 \| good
2026-07-25T11:00:00.000Z	14 \| good	1.334 \| good	5.382 \| good	15.341 \| good	0.615 \| good	13.724 \| good	0.192 \| good
2026-07-25T12:00:00.000Z	16 \| good	1.286 \| good	5.109 \| good	16.796 \| good	0.719 \| good	10.159 \| good	0.179 \| good
2026-07-25T13:00:00.000Z	19 \| good	1.424 \| good	5.915 \| good	20.71 \| good	0.872 \| good	5.405 \| good	0.151 \| good
2026-07-25T14:00:00.000Z	26 \| good	2.258 \| good	9.156 \| good	27.804 \| good	0.783 \| good	2.934 \| good	0.141 \| good
2026-07-25T15:00:00.000Z	32 \| good	3.147 \| good	13.836 \| good	34.877 \| good	0.637 \| good	1.731 \| good	0.141 \| good
2026-07-25T16:00:00.000Z	40 \| good	4.026 \| good	17.715 \| good	42.583 \| good	0.472 \| good	1.13 \| good	0.143 \| good
2026-07-25T17:00:00.000Z	43 \| good	4.493 \| good	19.598 \| good	45.627 \| good	0.407 \| good	0.94 \| good	0.143 \| good
2026-07-25T18:00:00.000Z	45 \| good	6.588 \| good	29.398 \| good	48.91 \| good	0.371 \| good	0.861 \| good	0.142 \| good
2026-07-25T19:00:00.000Z	49 \| good	7.361 \| good	32.49 \| good	53.138 \| good	0.357 \| good	0.862 \| good	0.141 \| good
2026-07-25T20:00:00.000Z	54 \| moderate	6.212 \| good	27.587 \| good	55.647 \| fine	0.35 \| good	0.877 \| good	0.14 \| good
2026-07-25T21:00:00.000Z	51 \| moderate	5.745 \| good	25.626 \| good	54.812 \| good	0.351 \| good	0.962 \| good	0.14 \| good
2026-07-25T22:00:00.000Z	48 \| good	5.62 \| good	24.25 \| good	51.982 \| good	0.357 \| good	1.197 \| good	0.14 \| good
2026-07-25T23:00:00.000Z	44 \| good	5.273 \| good	22.437 \| good	47.713 \| good	0.37 \| good	1.643 \| good	0.141 \| good

Lower Merion

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Lower Merion, Pennsylvania air quality map: Track AQI near you

0.28ppm

How accurate is Pennsylvania, USA air quality data?

Air quality data and pollutant measurements for Pennsylvania, 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 Lower Merion, Pennsylvania updated?

The air quality for Lower Merion, Pennsylvania is updated every hour.

When was the worst air quality at Lower Merion, Pennsylvania in the last 24 hrs?

The worst air quality in Lower Merion, Pennsylvania in the last 24 hours was observed at 01:00:00 on 2026-07-23.

When was the best air quality at Lower Merion, Pennsylvania in the last 24 hrs?

In the last 24 hrs, the best air quality in Lower Merion, Pennsylvania was observed at 03:00:00 on 2026-07-23.

What is the current air quality in Lower Merion, Pennsylvania?

The current air quality in Lower Merion, Pennsylvania is 46, categorized as Good based on real-time data.

What pollutant is the most common in Lower Merion, Pennsylvania?

The most common pollutant in Lower Merion, Pennsylvania is O3.

What should I do if the air quality in Lower Merion, Pennsylvania is poor?

If the air quality in Lower Merion, Pennsylvania is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Lower Merion, Pennsylvania?

The current PM_2.5 concentration at Lower Merion, Pennsylvania is 5.415 μg/m³.

What is the current concentration of PM₁₀ in Lower Merion, Pennsylvania?

The current PM₁₀ concentration at Lower Merion, Pennsylvania is 24.412 μg/m³.

What is the current concentration of carbon monoxide (CO) in Lower Merion, Pennsylvania?

The current carbon monoxide (CO) concentration at Lower Merion, Pennsylvania is 0.322 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Lower Merion, Pennsylvania?

The current sulfur dioxide (SO₂) concentration at Lower Merion, Pennsylvania is 0.109 ppb.

What is the current concentration of ozone (O₃) in Lower Merion, Pennsylvania?

The current ozone (O₃) concentration at Lower Merion, Pennsylvania is 49.85 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Lower Merion, Pennsylvania?

The current nitrogen dioxide (NO₂) concentration at Lower Merion, Pennsylvania is 3.711 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-22T00:00:00.000Z	44 \| good	8.17 \| good	35.87 \| good	32.592 \| good	0.347 \| good	7.986 \| good	0.423 \| good
2026-07-22T01:00:00.000Z	38 \| good	7.102 \| good	31.906 \| good	30.956 \| good	0.352 \| good	10.384 \| good	0.496 \| good
2026-07-22T02:00:00.000Z	33 \| good	5.836 \| good	25.778 \| good	30.938 \| good	0.348 \| good	8.186 \| good	0.409 \| good
2026-07-22T03:00:00.000Z	27 \| good	5.328 \| good	23.597 \| good	29.323 \| good	0.365 \| good	10.148 \| good	0.392 \| good
2026-07-22T04:00:00.000Z	29 \| good	5.314 \| good	23.551 \| good	30.922 \| good	0.361 \| good	9.888 \| good	0.392 \| good
2026-07-22T05:00:00.000Z	28 \| good	5.277 \| good	23.304 \| good	29.844 \| good	0.384 \| good	9.354 \| good	0.379 \| good
2026-07-22T06:00:00.000Z	27 \| good	5.204 \| good	23.008 \| good	28.531 \| good	0.445 \| good	5.357 \| good	0.366 \| good
2026-07-22T07:00:00.000Z	27 \| good	5.051 \| good	22.356 \| good	28.539 \| good	0.445 \| good	5.584 \| good	0.366 \| good
2026-07-22T08:00:00.000Z	27 \| good	4.911 \| good	21.767 \| good	26.362 \| good	0.356 \| good	4.882 \| good	0.303 \| good
2026-07-22T09:00:00.000Z	27 \| good	5.038 \| good	22.406 \| good	25.719 \| good	0.361 \| good	6.215 \| good	0.323 \| good
2026-07-22T10:00:00.000Z	27 \| good	5.064 \| good	22.338 \| good	25.465 \| good	0.451 \| good	10.841 \| good	0.323 \| good
2026-07-22T11:00:00.000Z	27 \| good	5.051 \| good	22.193 \| good	24.199 \| good	0.451 \| good	7.735 \| good	0.379 \| good
2026-07-22T12:00:00.000Z	27 \| good	5.046 \| good	22.473 \| good	23.424 \| good	0.613 \| good	9.35 \| good	0.445 \| good
2026-07-22T13:00:00.000Z	27 \| good	5.069 \| good	22.555 \| good	23.678 \| good	0.572 \| good	14.936 \| good	0.445 \| good
2026-07-22T14:00:00.000Z	33 \| good	5.765 \| good	24.914 \| good	25.651 \| good	0.548 \| good	9.672 \| good	0.416 \| good
2026-07-22T15:00:00.000Z	38 \| good	6.83 \| good	30.435 \| good	28.508 \| good	0.511 \| good	8.887 \| good	0.419 \| good
2026-07-22T16:00:00.000Z	44 \| good	8.327 \| good	37.072 \| good	32.747 \| good	0.418 \| good	7.554 \| good	0.419 \| good
2026-07-22T17:00:00.000Z	49 \| good	9.462 \| good	41.82 \| good	36.299 \| good	0.395 \| good	7.115 \| good	0.419 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	10.249 \| good	46.141 \| good	40.014 \| good	0.439 \| good	6.466 \| good	0.399 \| good
2026-07-22T19:00:00.000Z	54 \| moderate	10.628 \| good	47.525 \| good	42.546 \| good	0.438 \| good	6.878 \| good	0.399 \| good
2026-07-22T20:00:00.000Z	54 \| moderate	10.689 \| good	48.114 \| good	46.996 \| good	0.403 \| good	6.541 \| good	0.399 \| good
2026-07-22T21:00:00.000Z	52 \| moderate	10.435 \| good	46.887 \| good	44.735 \| good	0.398 \| good	8.408 \| good	0.399 \| good
2026-07-22T22:00:00.000Z	52 \| moderate	9.88 \| good	43.762 \| good	44.594 \| good	0.356 \| good	6.706 \| good	0.349 \| good
2026-07-22T23:00:00.000Z	49 \| good	9.29 \| good	41.412 \| good	43.009 \| good	0.46 \| good	5.783 \| good	0.369 \| good
2026-07-23T00:00:00.000Z	49 \| good	9.03 \| good	39.9 \| good	39.793 \| good	0.413 \| good	8.061 \| good	0.356 \| good
2026-07-23T01:00:00.000Z	49 \| good	8.808 \| good	39.529 \| good	35.01 \| good	0.362 \| good	7.197 \| good	0.356 \| good
2026-07-23T02:00:00.000Z	44 \| good	8.422 \| good	37.419 \| good	34.73 \| good	0.356 \| good	5.51 \| good	0.336 \| good
2026-07-23T03:00:00.000Z	19 \| good	0.683 \| good	2.777 \| good	20.556 \| good	0.698 \| good	6.888 \| good	0.201 \| good
2026-07-23T04:00:00.000Z	38 \| good	6.974 \| good	30.56 \| good	31.741 \| good	0.365 \| good	5.189 \| good	0.276 \| good
2026-07-23T05:00:00.000Z	33 \| good	6.18 \| good	27.115 \| good	28.662 \| good	0.365 \| good	4.883 \| good	0.276 \| good
2026-07-23T06:00:00.000Z	27 \| good	5.457 \| good	24.096 \| good	25.982 \| good	0.369 \| good	4.39 \| good	0.263 \| good
2026-07-23T07:00:00.000Z	27 \| good	4.865 \| good	21.595 \| good	25.85 \| good	0.396 \| good	3.833 \| good	0.263 \| good
2026-07-23T08:00:00.000Z	22 \| good	4.286 \| good	19.382 \| good	24.234 \| good	0.359 \| good	4.248 \| good	0.263 \| good
2026-07-23T09:00:00.000Z	22 \| good	3.957 \| good	17.82 \| good	22.916 \| good	0.428 \| good	4.901 \| good	0.263 \| good
2026-07-23T10:00:00.000Z	22 \| good	3.756 \| good	16.456 \| good	22.052 \| good	0.429 \| good	7.992 \| good	0.266 \| good
2026-07-23T11:00:00.000Z	22 \| good	3.71 \| good	16.23 \| good	21.847 \| good	0.515 \| good	9.818 \| good	0.306 \| good
2026-07-23T12:00:00.000Z	22 \| good	3.74 \| good	16.304 \| good	21.132 \| good	0.373 \| good	12.237 \| good	0.343 \| good
2026-07-23T13:00:00.000Z	22 \| good	3.768 \| good	16.523 \| good	23.203 \| good	0.508 \| good	11.363 \| good	0.317 \| good
2026-07-23T14:00:00.000Z	27 \| good	4.572 \| good	18.958 \| good	24.831 \| good	0.504 \| good	9.278 \| good	0.283 \| good
2026-07-23T15:00:00.000Z	27 \| good	3.77 \| good	16.529 \| good	28.728 \| good	0.397 \| good	7.755 \| good	0.28 \| good
2026-07-23T16:00:00.000Z	29 \| good	3.785 \| good	16.604 \| good	31.077 \| good	0.159 \| good	6.909 \| good	0.28 \| good
2026-07-23T17:00:00.000Z	31 \| good	3.973 \| good	17.784 \| good	34.236 \| good	0.166 \| good	5.783 \| good	0.246 \| good
2026-07-23T18:00:00.000Z	35 \| good	3.973 \| good	17.715 \| good	38.006 \| good	0.338 \| good	4.504 \| good	0.266 \| good
2026-07-23T19:00:00.000Z	38 \| good	3.995 \| good	17.864 \| good	41.232 \| good	0.353 \| good	4.663 \| good	0.27 \| good
2026-07-23T20:00:00.000Z	41 \| good	4.154 \| good	18.37 \| good	44.476 \| good	0.166 \| good	2.757 \| good	0.27 \| good
2026-07-23T21:00:00.000Z	43 \| good	4.229 \| good	18.746 \| good	45.744 \| good	0.171 \| good	4.114 \| good	0.27 \| good
2026-07-23T22:00:00.000Z	43 \| good	4.32 \| good	19.266 \| good	46.413 \| good	0.114 \| good	3.454 \| good	0.27 \| good
2026-07-23T23:00:00.000Z	46 \| good	5.415 \| good	24.412 \| good	49.85 \| good	0.109 \| good	3.711 \| good	0.322 \| good
2026-07-24T00:00:00.000Z	56 \| moderate	12.109 \| fine	54.241 \| good	36.317 \| good	0.595 \| good	5.933 \| good	0.165 \| good
2026-07-24T01:00:00.000Z	56 \| moderate	12.014 \| good	54.186 \| good	30.532 \| good	0.534 \| good	8.274 \| good	0.178 \| good
2026-07-24T02:00:00.000Z	52 \| moderate	9.734 \| good	43.638 \| good	32.797 \| good	0.482 \| good	8.657 \| good	0.179 \| good
2026-07-24T03:00:00.000Z	52 \| moderate	9.565 \| good	42.632 \| good	30.51 \| good	0.463 \| good	10.52 \| good	0.187 \| good
2026-07-24T04:00:00.000Z	54 \| moderate	11.269 \| good	50.111 \| good	27.74 \| good	0.451 \| good	12.868 \| good	0.201 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	10.295 \| good	45.718 \| good	21.428 \| good	0.429 \| good	14.008 \| good	0.211 \| good
2026-07-24T06:00:00.000Z	54 \| moderate	10.905 \| good	48.319 \| good	18.682 \| good	0.41 \| good	14.723 \| good	0.213 \| good
2026-07-24T07:00:00.000Z	54 \| moderate	11.415 \| good	50.089 \| good	15.892 \| good	0.397 \| good	15.093 \| good	0.212 \| good
2026-07-24T08:00:00.000Z	54 \| moderate	10.727 \| good	47.529 \| good	14.227 \| good	0.396 \| good	15.574 \| good	0.211 \| good
2026-07-24T09:00:00.000Z	52 \| moderate	10.216 \| good	45.026 \| good	14.92 \| good	0.396 \| good	16.613 \| good	0.214 \| good
2026-07-24T10:00:00.000Z	49 \| good	9.082 \| good	40.557 \| good	13.521 \| good	0.399 \| good	17.875 \| good	0.224 \| good
2026-07-24T11:00:00.000Z	33 \| good	6.101 \| good	27.022 \| good	18.671 \| good	0.394 \| good	16.077 \| good	0.237 \| good
2026-07-24T12:00:00.000Z	22 \| good	4.401 \| good	18.796 \| good	24.399 \| good	0.51 \| good	13.162 \| good	0.231 \| good
2026-07-24T13:00:00.000Z	33 \| good	5.687 \| good	24.648 \| good	28.42 \| good	0.766 \| good	7 \| good	0.179 \| good
2026-07-24T14:00:00.000Z	33 \| good	6.496 \| good	29.202 \| good	32.222 \| good	0.814 \| good	3.655 \| good	0.157 \| good
2026-07-24T15:00:00.000Z	44 \| good	7.675 \| good	33.926 \| good	38.064 \| good	0.73 \| good	1.931 \| good	0.149 \| good
2026-07-24T16:00:00.000Z	42 \| good	6.55 \| good	29.162 \| good	44.861 \| good	0.66 \| good	1.351 \| good	0.149 \| good
2026-07-24T17:00:00.000Z	44 \| good	7.083 \| good	31.061 \| good	47.119 \| good	0.63 \| good	1.174 \| good	0.149 \| good
2026-07-24T18:00:00.000Z	49 \| good	9.109 \| good	40.396 \| good	47.895 \| good	0.614 \| good	1.162 \| good	0.15 \| good
2026-07-24T19:00:00.000Z	43 \| good	4.493 \| good	19.78 \| good	46.435 \| good	0.603 \| good	1.225 \| good	0.151 \| good
2026-07-24T20:00:00.000Z	42 \| good	4.758 \| good	20.777 \| good	45.306 \| good	0.583 \| good	1.277 \| good	0.152 \| good
2026-07-24T21:00:00.000Z	42 \| good	5.568 \| good	23.823 \| good	45.164 \| good	0.558 \| good	1.399 \| good	0.152 \| good
2026-07-24T22:00:00.000Z	40 \| good	5.237 \| good	22.729 \| good	42.791 \| good	0.527 \| good	1.711 \| good	0.153 \| good
2026-07-24T23:00:00.000Z	33 \| good	6.331 \| good	28.419 \| good	36.215 \| good	0.487 \| good	2.305 \| good	0.153 \| good
2026-07-25T00:00:00.000Z	49 \| good	8.929 \| good	40.241 \| good	30.911 \| good	0.444 \| good	3.222 \| good	0.152 \| good
2026-07-25T01:00:00.000Z	49 \| good	9.372 \| good	41.61 \| good	21.825 \| good	0.399 \| good	3.565 \| good	0.146 \| good
2026-07-25T02:00:00.000Z	52 \| moderate	10.213 \| good	45.142 \| good	18.876 \| good	0.37 \| good	4.529 \| good	0.144 \| good
2026-07-25T03:00:00.000Z	49 \| good	8.774 \| good	39.23 \| good	17.934 \| good	0.37 \| good	6.078 \| good	0.145 \| good
2026-07-25T04:00:00.000Z	44 \| good	7.615 \| good	33.337 \| good	15.727 \| good	0.382 \| good	8.95 \| good	0.157 \| good
2026-07-25T05:00:00.000Z	27 \| good	5.432 \| good	23.518 \| good	13.997 \| good	0.403 \| good	11.067 \| good	0.17 \| good
2026-07-25T06:00:00.000Z	16 \| good	2.997 \| good	12.784 \| good	14.979 \| good	0.429 \| good	14.04 \| good	0.182 \| good
2026-07-25T07:00:00.000Z	16 \| good	2.518 \| good	9.99 \| good	15.799 \| good	0.466 \| good	16.549 \| good	0.191 \| good
2026-07-25T08:00:00.000Z	15 \| good	1.849 \| good	7.636 \| good	16.228 \| good	0.515 \| good	15.439 \| good	0.187 \| good
2026-07-25T09:00:00.000Z	14 \| good	1.376 \| good	5.581 \| good	12.629 \| good	0.562 \| good	15.169 \| good	0.186 \| good
2026-07-25T10:00:00.000Z	14 \| good	1.318 \| good	5.355 \| good	14.023 \| good	0.593 \| good	15.118 \| good	0.189 \| good
2026-07-25T11:00:00.000Z	14 \| good	1.334 \| good	5.382 \| good	15.341 \| good	0.615 \| good	13.724 \| good	0.192 \| good
2026-07-25T12:00:00.000Z	16 \| good	1.286 \| good	5.109 \| good	16.796 \| good	0.719 \| good	10.159 \| good	0.179 \| good
2026-07-25T13:00:00.000Z	19 \| good	1.424 \| good	5.915 \| good	20.71 \| good	0.872 \| good	5.405 \| good	0.151 \| good
2026-07-25T14:00:00.000Z	26 \| good	2.258 \| good	9.156 \| good	27.804 \| good	0.783 \| good	2.934 \| good	0.141 \| good
2026-07-25T15:00:00.000Z	32 \| good	3.147 \| good	13.836 \| good	34.877 \| good	0.637 \| good	1.731 \| good	0.141 \| good
2026-07-25T16:00:00.000Z	40 \| good	4.026 \| good	17.715 \| good	42.583 \| good	0.472 \| good	1.13 \| good	0.143 \| good
2026-07-25T17:00:00.000Z	43 \| good	4.493 \| good	19.598 \| good	45.627 \| good	0.407 \| good	0.94 \| good	0.143 \| good
2026-07-25T18:00:00.000Z	45 \| good	6.588 \| good	29.398 \| good	48.91 \| good	0.371 \| good	0.861 \| good	0.142 \| good
2026-07-25T19:00:00.000Z	49 \| good	7.361 \| good	32.49 \| good	53.138 \| good	0.357 \| good	0.862 \| good	0.141 \| good
2026-07-25T20:00:00.000Z	54 \| moderate	6.212 \| good	27.587 \| good	55.647 \| fine	0.35 \| good	0.877 \| good	0.14 \| good
2026-07-25T21:00:00.000Z	51 \| moderate	5.745 \| good	25.626 \| good	54.812 \| good	0.351 \| good	0.962 \| good	0.14 \| good
2026-07-25T22:00:00.000Z	48 \| good	5.62 \| good	24.25 \| good	51.982 \| good	0.357 \| good	1.197 \| good	0.14 \| good
2026-07-25T23:00:00.000Z	44 \| good	5.273 \| good	22.437 \| good	47.713 \| good	0.37 \| good	1.643 \| good	0.141 \| good

Lower Merion, Pennsylvania live air quality index now

Major air pollutants in Lower Merion, Pennsylvania

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

Haverford, Pennsylvania

Radnor, Pennsylvania

Upper Darby, Pennsylvania

Marple, Pennsylvania

Plymouth Township, Pennsylvania

Lansdowne, Pennsylvania

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Frequently asked questions

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What is the current concentration of PM2.5 in Lower Merion, Pennsylvania?

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What is the current concentration of sulfur dioxide (SO2) in Lower Merion, Pennsylvania?

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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 Lower Merion, Pennsylvania?

What is the current concentration of PM₁₀ in Lower Merion, Pennsylvania?

What is the current concentration of sulfur dioxide (SO₂) in Lower Merion, Pennsylvania?

What is the current concentration of ozone (O₃) in Lower Merion, Pennsylvania?

What is the current concentration of nitrogen dioxide (NO₂) in Lower Merion, Pennsylvania?