What are the current PM10 levels at Norristown, Pennsylvania?

The current PM10 levels in Norristown, Pennsylvania are 9.865 μg/m3.

What are the current sulfur dioxide (SO2) levels at Norristown, Pennsylvania?

The current sulfur dioxide (SO2) levels in Norristown, Pennsylvania are 0.616 ppb.

What are the current ozone (O3) levels at Norristown, Pennsylvania?

The current ozone (O3) levels at Norristown, Pennsylvania is 28.824 ppm.

What are the current nitrogen dioxide (NO2) levels at Norristown, Pennsylvania?

The current nitrogen dioxide (NO2) levels at Norristown, Pennsylvania is 9.589 ppb.

Real-time air quality index in Norristown, Pennsylvania today

Q: What are the current PM2.5 levels in Norristown, Pennsylvania?

The measured PM2.5 levels in Norristown, Pennsylvania at present are 2.389 μg/m3.

Stay updated with real-time air quality in Norristown, 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

Norristown, Pennsylvania

Last updated: ... (Local time)

Common air pollutants in Norristown, Pennsylvania

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

2.39 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

9.87 μg/m³

155

255

425

605+

Ozone (O₃)

28.82 ppb

201

201+

Sulfur Dioxide (SO₂)

0.62 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

9.59 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 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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Norristown, Pennsylvania

Scroll To Air Quality Map

Track live Norristown, Pennsylvania air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-11T06:00:00.000Z	44 \| good	7.784 \| good	34.164 \| good	33.522 \| good	0.951 \| good	19.276 \| good	0.329 \| good
2026-03-11T07:00:00.000Z	38 \| good	7.277 \| good	32.148 \| good	33.399 \| good	0.736 \| good	21.122 \| good	0.329 \| good
2026-03-11T08:00:00.000Z	38 \| good	7.351 \| good	33.034 \| good	30.38 \| good	0.771 \| good	21.814 \| good	0.356 \| good
2026-03-11T09:00:00.000Z	49 \| good	8.743 \| good	38.541 \| good	30.456 \| good	0.724 \| good	23.585 \| good	0.333 \| good
2026-03-11T10:00:00.000Z	52 \| moderate	9.787 \| good	44.242 \| good	18.728 \| good	0.591 \| good	29.947 \| good	0.365 \| good
2026-03-11T11:00:00.000Z	52 \| moderate	10.129 \| good	45.465 \| good	19.448 \| good	0.491 \| good	34.689 \| good	0.457 \| good
2026-03-11T12:00:00.000Z	54 \| moderate	10.553 \| good	46.57 \| good	17.056 \| good	1.482 \| good	32.714 \| good	0.496 \| good
2026-03-11T13:00:00.000Z	54 \| moderate	10.943 \| good	48.495 \| good	17.779 \| good	1.046 \| good	30.501 \| good	0.555 \| good
2026-03-11T14:00:00.000Z	54 \| moderate	11.247 \| good	49.551 \| good	24.644 \| good	1.178 \| good	28.981 \| good	0.501 \| good
2026-03-11T15:00:00.000Z	54 \| moderate	11.339 \| good	50.455 \| good	28.658 \| good	1.264 \| good	19.134 \| good	0.436 \| good
2026-03-11T16:00:00.000Z	56 \| moderate	11.802 \| good	52.332 \| good	27.97 \| good	1.177 \| good	14.51 \| good	0.356 \| good
2026-03-11T17:00:00.000Z	56 \| moderate	11.881 \| good	52.278 \| good	30.879 \| good	0.844 \| good	12.738 \| good	0.361 \| good
2026-03-11T18:00:00.000Z	56 \| moderate	11.68 \| good	52.242 \| good	32.913 \| good	0.865 \| good	13.367 \| good	0.356 \| good
2026-03-11T19:00:00.000Z	54 \| moderate	11.385 \| good	50.261 \| good	33.861 \| good	0.882 \| good	14.102 \| good	0.352 \| good
2026-03-11T20:00:00.000Z	54 \| moderate	11.359 \| good	50.155 \| good	30.017 \| good	0.852 \| good	11.476 \| good	0.394 \| good
2026-03-11T21:00:00.000Z	54 \| moderate	11.467 \| good	51.18 \| good	29.222 \| good	0.891 \| good	11.216 \| good	0.394 \| good
2026-03-11T22:00:00.000Z	54 \| moderate	11.366 \| good	50.206 \| good	33.124 \| good	0.926 \| good	8.817 \| good	0.373 \| good
2026-03-11T23:00:00.000Z	54 \| moderate	11.129 \| good	49.039 \| good	35.947 \| good	0.874 \| good	8.973 \| good	0.343 \| good
2026-03-12T00:00:00.000Z	54 \| moderate	11.122 \| good	49.024 \| good	31.147 \| good	0.752 \| good	11.154 \| good	0.359 \| good
2026-03-12T01:00:00.000Z	54 \| moderate	11.222 \| good	49.98 \| good	30.081 \| good	0.652 \| good	10.037 \| good	0.373 \| good
2026-03-12T02:00:00.000Z	54 \| moderate	11.249 \| good	50.098 \| good	31.897 \| good	0.586 \| good	10.911 \| good	0.373 \| good
2026-03-12T03:00:00.000Z	52 \| moderate	9.884 \| good	44.391 \| good	29.88 \| good	0.527 \| good	9.44 \| good	0.318 \| good
2026-03-12T04:00:00.000Z	44 \| good	8.45 \| good	37.7 \| good	24.191 \| good	0.525 \| good	10.218 \| good	0.309 \| good
2026-03-12T05:00:00.000Z	44 \| good	7.702 \| good	34.448 \| good	24.87 \| good	0.472 \| good	14.498 \| good	0.315 \| good
2026-03-12T06:00:00.000Z	38 \| good	7.218 \| good	32.504 \| good	23.876 \| good	0.501 \| good	19.558 \| good	0.315 \| good
2026-03-12T07:00:00.000Z	38 \| good	7.178 \| good	31.807 \| good	23.86 \| good	0.527 \| good	16.398 \| good	0.332 \| good
2026-03-12T08:00:00.000Z	38 \| good	7.218 \| good	31.992 \| good	15.296 \| good	0.654 \| good	9.979 \| good	0.336 \| good
2026-03-12T09:00:00.000Z	38 \| good	7.349 \| good	33.108 \| good	7.423 \| good	0.469 \| good	13.587 \| good	0.32 \| good
2026-03-12T10:00:00.000Z	38 \| good	7.481 \| good	33.312 \| good	8.046 \| good	0.721 \| good	19.646 \| good	0.342 \| good
2026-03-12T11:00:00.000Z	33 \| good	6.212 \| good	26.866 \| good	14.67 \| good	0.715 \| good	20.613 \| good	0.468 \| good
2026-03-12T12:00:00.000Z	22 \| good	3.829 \| good	16.975 \| good	22.707 \| good	0.762 \| good	13.987 \| good	0.358 \| good
2026-03-12T13:00:00.000Z	22 \| good	2.343 \| good	10.093 \| good	24.021 \| good	0.523 \| good	6.878 \| good	0.269 \| good
2026-03-12T14:00:00.000Z	23 \| good	1.642 \| good	6.644 \| good	24.872 \| good	0.441 \| good	6.315 \| good	0.225 \| good
2026-03-12T15:00:00.000Z	24 \| good	1.193 \| good	5.397 \| good	25.877 \| good	0.518 \| good	6.139 \| good	0.225 \| good
2026-03-12T16:00:00.000Z	28 \| good	0.973 \| good	4.311 \| good	29.797 \| good	0.516 \| good	8.267 \| good	0.245 \| good
2026-03-12T17:00:00.000Z	29 \| good	0.966 \| good	4.267 \| good	30.836 \| good	0.452 \| good	8.62 \| good	0.286 \| good
2026-03-12T18:00:00.000Z	29 \| good	0.969 \| good	4.285 \| good	30.941 \| good	0.451 \| good	8.805 \| good	0.286 \| good
2026-03-12T19:00:00.000Z	29 \| good	1.261 \| good	5.259 \| good	30.99 \| good	0.306 \| good	10.831 \| good	0.297 \| good
2026-03-12T20:00:00.000Z	29 \| good	1.567 \| good	6.305 \| good	30.884 \| good	0.34 \| good	9.664 \| good	0.292 \| good
2026-03-12T21:00:00.000Z	27 \| good	2.258 \| good	9.263 \| good	28.943 \| good	0.38 \| good	9.946 \| good	0.291 \| good
2026-03-12T22:00:00.000Z	29 \| good	2.563 \| good	10.321 \| good	30.835 \| good	0.397 \| good	17.448 \| good	0.314 \| good
2026-03-12T23:00:00.000Z	28 \| good	2.785 \| good	11.4 \| good	29.759 \| good	0.396 \| good	12.684 \| good	0.326 \| good
2026-03-13T00:00:00.000Z	25 \| good	3.11 \| good	12.55 \| good	26.909 \| good	0.367 \| good	11.884 \| good	0.326 \| good
2026-03-13T01:00:00.000Z	28 \| good	2.845 \| good	11.673 \| good	29.808 \| good	0.453 \| good	13.738 \| good	0.326 \| good
2026-03-13T02:00:00.000Z	28 \| good	2.849 \| good	11.592 \| good	29.65 \| good	0.152 \| good	13.834 \| good	0.361 \| good
2026-03-13T03:00:00.000Z	26 \| good	2.774 \| good	11.28 \| good	27.674 \| good	0.502 \| good	11.898 \| good	0.377 \| good
2026-03-13T04:00:00.000Z	27 \| good	2.389 \| good	9.865 \| good	28.824 \| good	0.616 \| good	9.589 \| good	0.306 \| good
2026-03-13T05:00:00.000Z	29 \| good	2.229 \| good	9.561 \| good	30.939 \| good	0.269 \| good	5.543 \| good	0.233 \| good
2026-03-13T05:00:00.000Z	27 \| good	2.389 \| good	9.865 \| good	28.824 \| good	0.616 \| good	9.589 \| good	0.306 \| good
2026-03-13T06:00:00.000Z	22 \| good	4.395 \| good	19.284 \| good	8.813 \| good	1.354 \| good	6.818 \| good	0.194 \| good
2026-03-13T07:00:00.000Z	27 \| good	5.34 \| good	23.255 \| good	7.839 \| good	1.395 \| good	7.267 \| good	0.196 \| good
2026-03-13T08:00:00.000Z	22 \| good	3.75 \| good	16.383 \| good	14.386 \| good	1.436 \| good	7.717 \| good	0.198 \| good
2026-03-13T09:00:00.000Z	33 \| good	5.881 \| good	25.385 \| good	12.052 \| good	1.477 \| good	8.166 \| good	0.201 \| good
2026-03-13T10:00:00.000Z	44 \| good	7.512 \| good	32.799 \| good	4.489 \| good	1.557 \| good	10.078 \| good	0.217 \| good
2026-03-13T11:00:00.000Z	44 \| good	8.276 \| good	36.279 \| good	3.538 \| good	1.637 \| good	11.99 \| good	0.233 \| good
2026-03-13T12:00:00.000Z	52 \| moderate	9.576 \| good	42.79 \| good	7.07 \| good	1.717 \| good	13.901 \| good	0.249 \| good
2026-03-13T13:00:00.000Z	56 \| moderate	12.114 \| fine	54.523 \| good	10.581 \| good	1.866 \| good	11.203 \| good	0.231 \| good
2026-03-13T14:00:00.000Z	44 \| good	8.316 \| good	36.625 \| good	19.6 \| good	2.015 \| good	8.504 \| good	0.214 \| good
2026-03-13T15:00:00.000Z	28 \| good	5.463 \| good	23.784 \| good	29.826 \| good	2.164 \| good	5.805 \| good	0.196 \| good
2026-03-13T16:00:00.000Z	31 \| good	5.094 \| good	21.974 \| good	33.811 \| good	2.035 \| good	4.659 \| good	0.184 \| good
2026-03-13T17:00:00.000Z	33 \| good	4.346 \| good	19.066 \| good	36.137 \| good	1.906 \| good	3.512 \| good	0.172 \| good
2026-03-13T18:00:00.000Z	38 \| good	3.124 \| good	13.29 \| good	40.614 \| good	1.778 \| good	2.365 \| good	0.16 \| good
2026-03-13T19:00:00.000Z	40 \| good	3.631 \| good	16.031 \| good	42.768 \| good	1.588 \| good	2.499 \| good	0.16 \| good
2026-03-13T20:00:00.000Z	39 \| good	3.083 \| good	13.188 \| good	42.127 \| good	1.398 \| good	2.632 \| good	0.16 \| good
2026-03-13T21:00:00.000Z	39 \| good	2.641 \| good	10.634 \| good	41.706 \| good	1.209 \| good	2.765 \| good	0.16 \| good
2026-03-13T22:00:00.000Z	38 \| good	1.282 \| good	5.302 \| good	41.301 \| good	1.186 \| good	3.193 \| good	0.161 \| good
2026-03-13T23:00:00.000Z	35 \| good	2.986 \| good	12.383 \| good	37.744 \| good	1.164 \| good	3.621 \| good	0.162 \| good
2026-03-14T00:00:00.000Z	37 \| good	1.174 \| good	4.884 \| good	39.927 \| good	1.141 \| good	4.049 \| good	0.163 \| good
2026-03-14T01:00:00.000Z	39 \| good	1.853 \| good	7.844 \| good	41.547 \| good	1.314 \| good	4.067 \| good	0.161 \| good
2026-03-14T02:00:00.000Z	39 \| good	1.652 \| good	6.702 \| good	41.831 \| good	1.487 \| good	4.086 \| good	0.16 \| good
2026-03-14T03:00:00.000Z	38 \| good	1.507 \| good	6.261 \| good	41.124 \| good	1.661 \| good	4.104 \| good	0.158 \| good
2026-03-14T04:00:00.000Z	39 \| good	1.27 \| good	5.048 \| good	42.02 \| good	1.794 \| good	4.013 \| good	0.159 \| good
2026-03-14T05:00:00.000Z	34 \| good	2.039 \| good	8.24 \| good	37.465 \| good	1.928 \| good	3.922 \| good	0.159 \| good
2026-03-14T06:00:00.000Z	39 \| good	6.352 \| good	7.039 \| good	42.062 \| good	2.059 \| good	3.814 \| good	0.159 \| good
2026-03-14T07:00:00.000Z	32 \| good	3.033 \| good	12.438 \| good	35.238 \| good	1.872 \| good	3.269 \| good	0.16 \| good
2026-03-14T08:00:00.000Z	38 \| good	6.879 \| good	30.345 \| good	33.891 \| good	1.682 \| good	2.707 \| good	0.16 \| good
2026-03-14T09:00:00.000Z	44 \| good	7.914 \| good	34.825 \| good	30.96 \| good	1.492 \| good	2.146 \| good	0.161 \| good
2026-03-14T10:00:00.000Z	38 \| good	6.562 \| good	29.155 \| good	31.402 \| good	1.531 \| good	2.638 \| good	0.166 \| good
2026-03-14T11:00:00.000Z	28 \| good	1.734 \| good	7.097 \| good	30.286 \| good	1.57 \| good	3.13 \| good	0.17 \| good
2026-03-14T12:00:00.000Z	33 \| good	2.794 \| good	2.805 \| good	36.197 \| good	1.602 \| good	3.597 \| good	0.174 \| good
2026-03-14T13:00:00.000Z	35 \| good	3.233 \| good	3.257 \| good	37.647 \| good	1.529 \| good	3.179 \| good	0.172 \| good
2026-03-14T14:00:00.000Z	36 \| good	2.655 \| good	2.71 \| good	39.097 \| good	1.456 \| good	2.761 \| good	0.17 \| good
2026-03-14T15:00:00.000Z	38 \| good	2.521 \| good	2.624 \| good	40.547 \| good	1.383 \| good	2.343 \| good	0.167 \| good
2026-03-14T16:00:00.000Z	40 \| good	2.273 \| good	2.475 \| good	42.599 \| good	1.313 \| good	2.122 \| good	0.161 \| good
2026-03-14T17:00:00.000Z	40 \| good	1.701 \| good	6.809 \| good	42.97 \| good	1.248 \| good	1.918 \| good	0.155 \| good
2026-03-14T18:00:00.000Z	44 \| good	2.153 \| good	2.522 \| good	46.704 \| good	1.172 \| good	1.681 \| good	0.149 \| good
2026-03-14T19:00:00.000Z	44 \| good	2.246 \| good	2.649 \| good	47.306 \| good	1.149 \| good	1.772 \| good	0.147 \| good
2026-03-14T20:00:00.000Z	44 \| good	2.342 \| good	2.786 \| good	47.908 \| good	1.126 \| good	1.864 \| good	0.145 \| good
2026-03-14T21:00:00.000Z	45 \| good	2.481 \| good	2.963 \| good	48.51 \| good	1.103 \| good	1.955 \| good	0.144 \| good
2026-03-14T22:00:00.000Z	38 \| good	2.803 \| good	3.327 \| good	40.952 \| good	1.264 \| good	6.891 \| good	0.179 \| good
2026-03-14T23:00:00.000Z	31 \| good	4.564 \| good	5.103 \| good	33.395 \| good	1.425 \| good	11.827 \| good	0.214 \| good
2026-03-15T00:00:00.000Z	49 \| good	9.426 \| good	10.047 \| good	25.838 \| good	1.586 \| good	16.763 \| good	0.249 \| good
2026-03-15T01:00:00.000Z	62 \| moderate	14.931 \| fine	15.719 \| good	19.792 \| good	1.882 \| good	21.343 \| good	0.304 \| good
2026-03-15T02:00:00.000Z	71 \| moderate	20.395 \| fine	21.264 \| good	13.745 \| good	2.178 \| good	25.923 \| good	0.359 \| good
2026-03-15T03:00:00.000Z	77 \| moderate	23.133 \| fine	24.042 \| good	7.698 \| good	2.474 \| good	30.503 \| good	0.413 \| good
2026-03-15T04:00:00.000Z	69 \| moderate	19.37 \| fine	20.259 \| good	11.628 \| good	2.197 \| good	26.251 \| good	0.364 \| good
2026-03-15T05:00:00.000Z	62 \| moderate	15.028 \| fine	15.878 \| good	15.558 \| good	1.919 \| good	21.999 \| good	0.314 \| good

Norristown

Empower business decisions with accurate air quality data

Norristown, Pennsylvania air quality map: Real-time AQI near you

0.30ppm

How accurate is Pennsylvania, USA air quality data?

Air quality measurements for Pennsylvania, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Norristown, Pennsylvania updated?

Air quality data for Norristown, Pennsylvania is updated on an hourly basis.

When did Norristown, Pennsylvania experience the worst air quality in the last 24 hours?

The worst air quality in Norristown, Pennsylvania was recorded at 05:00:00 on 2026-03-12.

When did Norristown, Pennsylvania have its best air quality in the last 24 hours?

The best air quality in Norristown, Pennsylvania was recorded at 01:00:00 on 2026-03-12.

What is the real-time air quality index for Norristown, Pennsylvania?

The real-time air quality index in Norristown, Pennsylvania is 27, currently categorized as Good.

Which pollutant is found most often in Norristown, Pennsylvania?

The most common pollutant in Norristown, Pennsylvania is O3.

What can I do if the air quality in Norristown, Pennsylvania is poor?

If the air quality in Norristown, Pennsylvania is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Norristown, Pennsylvania?

The measured PM_2.5 levels in Norristown, Pennsylvania at present are 2.389 μg/m³.

What are the current PM₁₀ levels at Norristown, Pennsylvania?

The current PM₁₀ levels in Norristown, Pennsylvania are 9.865 μg/m³.

What are the current carbon monoxide (CO) levels at Norristown, Pennsylvania?

The current carbon monoxide (CO) level in Norristown, Pennsylvania is 0.306 ppm.

What are the current sulfur dioxide (SO₂) levels at Norristown, Pennsylvania?

The current sulfur dioxide (SO₂) levels in Norristown, Pennsylvania are 0.616 ppb.

What are the current ozone (O₃) levels at Norristown, Pennsylvania?

The current ozone (O₃) levels at Norristown, Pennsylvania is 28.824 ppm.

What are the current nitrogen dioxide (NO₂) levels at Norristown, Pennsylvania?

The current nitrogen dioxide (NO₂) levels at Norristown, Pennsylvania is 9.589 ppb.

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