What are the current PM10 levels at Norristown, Pennsylvania?

The current PM10 levels in Norristown, Pennsylvania are 96.692 μg/m3.

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

The current sulfur dioxide (SO2) levels in Norristown, Pennsylvania are 1.017 ppb.

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

The current ozone (O3) levels at Norristown, Pennsylvania is 6.884 ppm.

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

The current nitrogen dioxide (NO2) levels at Norristown, Pennsylvania is 26.544 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 21.834 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)

Moderate

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)

21.83 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

96.69 μg/m³

155

255

425

605+

Ozone (O₃)

6.88 ppb

201

201+

Sulfur Dioxide (SO₂)

1.02 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

26.54 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.83 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Norristown, Pennsylvania

Get Live Pollen Counts

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
2025-12-05T15:00:00.000Z	22 \| good	3.132 \| good	12.942 \| good	23.833 \| good	0.346 \| good	20.537 \| good	0.377 \| good
2025-12-05T16:00:00.000Z	22 \| good	3.574 \| good	16.183 \| good	23.533 \| good	0.292 \| good	18.539 \| good	0.359 \| good
2025-12-05T17:00:00.000Z	22 \| good	3.828 \| good	16.706 \| good	23.863 \| good	0.36 \| good	17.599 \| good	0.359 \| good
2025-12-05T18:00:00.000Z	22 \| good	3.912 \| good	17.082 \| good	23.813 \| good	0.499 \| good	18.52 \| good	0.38 \| good
2025-12-05T19:00:00.000Z	22 \| good	4.053 \| good	18.001 \| good	21.308 \| good	0.532 \| good	17.414 \| good	0.313 \| good
2025-12-05T20:00:00.000Z	22 \| good	4.148 \| good	18.098 \| good	19.486 \| good	0.485 \| good	20.547 \| good	0.377 \| good
2025-12-05T21:00:00.000Z	22 \| good	4.253 \| good	18.958 \| good	17.648 \| good	0.486 \| good	21.91 \| good	0.396 \| good
2025-12-05T22:00:00.000Z	27 \| good	4.521 \| good	19.819 \| good	17.213 \| good	0.421 \| good	23.656 \| good	0.417 \| good
2025-12-05T23:00:00.000Z	27 \| good	4.732 \| good	20.923 \| good	17.039 \| good	0.417 \| good	23.391 \| good	0.397 \| good
2025-12-06T00:00:00.000Z	27 \| good	5.135 \| good	22.652 \| good	15.356 \| good	0.416 \| good	20.882 \| good	0.357 \| good
2025-12-06T01:00:00.000Z	27 \| good	5.221 \| good	22.598 \| good	15.392 \| good	0.403 \| good	23.756 \| good	0.378 \| good
2025-12-06T02:00:00.000Z	27 \| good	5.326 \| good	23.566 \| good	15.302 \| good	0.404 \| good	24.868 \| good	0.413 \| good
2025-12-06T03:00:00.000Z	33 \| good	6.235 \| good	27.629 \| good	14.184 \| good	0.423 \| good	23.061 \| good	0.427 \| good
2025-12-06T04:00:00.000Z	38 \| good	6.866 \| good	30.784 \| good	12.435 \| good	0.411 \| good	21.546 \| good	0.428 \| good
2025-12-06T05:00:00.000Z	44 \| good	7.809 \| good	34.537 \| good	9.775 \| good	0.342 \| good	23.414 \| good	0.428 \| good
2025-12-06T06:00:00.000Z	49 \| good	8.814 \| good	38.661 \| good	9.585 \| good	0.343 \| good	25.766 \| good	0.413 \| good
2025-12-06T07:00:00.000Z	52 \| moderate	9.945 \| good	44.914 \| good	9.167 \| good	0.343 \| good	27.57 \| good	0.413 \| good
2025-12-06T08:00:00.000Z	54 \| moderate	10.924 \| good	48.48 \| good	6.66 \| good	0.421 \| good	26.167 \| good	0.428 \| good
2025-12-06T09:00:00.000Z	56 \| moderate	12.399 \| fine	56.12 \| fine	7.214 \| good	0.451 \| good	26.146 \| good	0.423 \| good
2025-12-06T10:00:00.000Z	58 \| moderate	13.431 \| fine	61.036 \| fine	6.631 \| good	0.418 \| good	23.626 \| good	0.43 \| good
2025-12-06T11:00:00.000Z	62 \| moderate	15.078 \| fine	66.825 \| fine	6.189 \| good	0.376 \| good	19.709 \| good	0.409 \| good
2025-12-06T12:00:00.000Z	67 \| moderate	17.683 \| fine	79.114 \| fine	5.65 \| good	0.376 \| good	23.492 \| good	0.413 \| good
2025-12-06T13:00:00.000Z	69 \| moderate	19.4 \| fine	85.208 \| fine	6.921 \| good	0.445 \| good	24.247 \| good	0.427 \| good
2025-12-06T14:00:00.000Z	73 \| moderate	20.747 \| fine	91.607 \| fine	8.26 \| good	0.599 \| good	22.073 \| good	0.469 \| good
2025-12-06T15:00:00.000Z	77 \| moderate	22.579 \| fine	98.632 \| fine	8.343 \| good	0.717 \| good	20.398 \| good	0.529 \| good
2025-12-06T16:00:00.000Z	79 \| moderate	24.015 \| fine	104.819 \| fine	10.608 \| good	0.832 \| good	20.083 \| good	0.545 \| good
2025-12-06T17:00:00.000Z	77 \| moderate	23.119 \| fine	100.519 \| fine	11.714 \| good	0.733 \| good	15.738 \| good	0.499 \| good
2025-12-06T18:00:00.000Z	73 \| moderate	21.087 \| fine	92.905 \| fine	14.733 \| good	0.807 \| good	14.957 \| good	0.525 \| good
2025-12-06T19:00:00.000Z	69 \| moderate	19.451 \| fine	86.445 \| fine	17.428 \| good	0.67 \| good	12.306 \| good	0.457 \| good
2025-12-06T20:00:00.000Z	67 \| moderate	18.404 \| fine	81.321 \| fine	18.772 \| good	0.594 \| good	10.986 \| good	0.403 \| good
2025-12-06T21:00:00.000Z	64 \| moderate	16.369 \| fine	73.23 \| fine	20.895 \| good	0.413 \| good	10.723 \| good	0.363 \| good
2025-12-06T22:00:00.000Z	64 \| moderate	16.131 \| fine	71.744 \| fine	19.28 \| good	0.408 \| good	10.102 \| good	0.368 \| good
2025-12-06T23:00:00.000Z	66 \| moderate	16.994 \| fine	76.211 \| fine	18.366 \| good	0.603 \| good	16.75 \| good	0.342 \| good
2025-12-07T00:00:00.000Z	67 \| moderate	18.414 \| fine	82.275 \| fine	15.115 \| good	0.728 \| good	18.591 \| good	0.364 \| good
2025-12-07T01:00:00.000Z	71 \| moderate	20.297 \| fine	89.377 \| fine	12.297 \| good	0.902 \| good	18.75 \| good	0.388 \| good
2025-12-07T02:00:00.000Z	79 \| moderate	24.402 \| fine	107.097 \| fine	7.096 \| good	1.1 \| good	19.752 \| good	0.456 \| good
2025-12-07T03:00:00.000Z	84 \| moderate	26.776 \| fine	116.93 \| fine	6.715 \| good	1.283 \| good	21.805 \| good	0.654 \| good
2025-12-07T04:00:00.000Z	86 \| moderate	28.092 \| fine	122.214 \| fine	5.089 \| good	1.261 \| good	21.413 \| good	0.674 \| good
2025-12-07T05:00:00.000Z	88 \| moderate	29.181 \| fine	127.589 \| fine	3.096 \| good	1.303 \| good	20.16 \| good	0.719 \| good
2025-12-07T06:00:00.000Z	90 \| moderate	30.317 \| fine	132.322 \| fine	1.394 \| good	1.322 \| good	19.884 \| good	0.678 \| good
2025-12-07T07:00:00.000Z	92 \| moderate	30.765 \| fine	133.68 \| fine	1.347 \| good	1.245 \| good	20.402 \| good	0.703 \| good
2025-12-07T08:00:00.000Z	90 \| moderate	30.403 \| fine	131.435 \| fine	1.165 \| good	1.125 \| good	21.237 \| good	0.667 \| good
2025-12-07T09:00:00.000Z	86 \| moderate	27.991 \| fine	121.766 \| fine	3.359 \| good	0.935 \| good	21.534 \| good	0.573 \| good
2025-12-07T10:00:00.000Z	84 \| moderate	26.736 \| fine	116.996 \| fine	3.07 \| good	0.767 \| good	21.708 \| good	0.526 \| good
2025-12-07T11:00:00.000Z	82 \| moderate	25.524 \| fine	111.292 \| fine	3.094 \| good	0.834 \| good	21.961 \| good	0.568 \| good
2025-12-07T12:00:00.000Z	81 \| moderate	24.645 \| fine	107.828 \| fine	2.204 \| good	0.913 \| good	22.139 \| good	0.635 \| good
2025-12-07T13:00:00.000Z	77 \| moderate	22.967 \| fine	100.285 \| fine	3.426 \| good	1.035 \| good	23.195 \| good	0.653 \| good
2025-12-07T14:00:00.000Z	75 \| moderate	21.762 \| fine	96.253 \| fine	6.235 \| good	1.105 \| good	25.394 \| good	0.822 \| good
2025-12-07T14:00:00.000Z	75 \| moderate	21.834 \| fine	96.692 \| fine	6.884 \| good	1.017 \| good	26.544 \| good	0.834 \| good
2025-12-07T15:00:00.000Z	75 \| moderate	22.381 \| fine	98.822 \| fine	17.716 \| good	4.006 \| good	9.902 \| good	0.298 \| good
2025-12-07T16:00:00.000Z	69 \| moderate	19.234 \| fine	85.077 \| fine	21.285 \| good	3.643 \| good	8.357 \| good	0.263 \| good
2025-12-07T17:00:00.000Z	64 \| moderate	16.352 \| fine	73.035 \| fine	26.3 \| good	3.279 \| good	6.813 \| good	0.229 \| good
2025-12-07T18:00:00.000Z	62 \| moderate	14.733 \| fine	65.339 \| fine	29.809 \| good	2.916 \| good	5.268 \| good	0.194 \| good
2025-12-07T19:00:00.000Z	62 \| moderate	15.034 \| fine	67.139 \| fine	28.501 \| good	3.098 \| good	6.2 \| good	0.196 \| good
2025-12-07T20:00:00.000Z	60 \| moderate	13.987 \| fine	63.16 \| fine	28.6 \| good	3.279 \| good	7.132 \| good	0.198 \| good
2025-12-07T21:00:00.000Z	67 \| moderate	17.644 \| fine	78.963 \| fine	22.71 \| good	3.461 \| good	8.064 \| good	0.201 \| good
2025-12-07T22:00:00.000Z	73 \| moderate	20.927 \| fine	92.971 \| fine	15.179 \| good	3.632 \| good	12.53 \| good	0.24 \| good
2025-12-07T23:00:00.000Z	77 \| moderate	23.229 \| fine	101.44 \| fine	7.589 \| good	3.804 \| good	16.995 \| good	0.28 \| good
2025-12-08T00:00:00.000Z	71 \| moderate	20.318 \| fine	89.547 \| fine	9.098 \| good	3.975 \| good	21.461 \| good	0.32 \| good
2025-12-08T01:00:00.000Z	71 \| moderate	20.498 \| fine	89.691 \| fine	11.874 \| good	4.217 \| good	21.844 \| good	0.327 \| good
2025-12-08T02:00:00.000Z	73 \| moderate	21.181 \| fine	93.514 \| fine	12.106 \| good	4.46 \| good	22.226 \| good	0.334 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	22.426 \| fine	97.596 \| fine	10.933 \| good	4.702 \| good	22.608 \| good	0.341 \| good
2025-12-08T04:00:00.000Z	77 \| moderate	23.416 \| fine	102.875 \| fine	8.814 \| good	4.785 \| good	20.176 \| good	0.323 \| good
2025-12-08T05:00:00.000Z	67 \| moderate	18.24 \| fine	80.761 \| fine	13.186 \| good	4.869 \| good	17.744 \| good	0.305 \| good
2025-12-08T06:00:00.000Z	58 \| moderate	12.604 \| fine	56.853 \| fine	19.272 \| good	4.952 \| good	15.312 \| good	0.287 \| good
2025-12-08T07:00:00.000Z	38 \| good	6.877 \| good	30.053 \| good	23.513 \| good	3.952 \| good	11.57 \| good	0.253 \| good
2025-12-08T08:00:00.000Z	24 \| good	0.548 \| good	2.238 \| good	26.458 \| good	2.953 \| good	7.828 \| good	0.218 \| good
2025-12-08T09:00:00.000Z	27 \| good	0.109 \| good	0.069 \| good	29.368 \| good	1.954 \| good	4.085 \| good	0.183 \| good
2025-12-08T10:00:00.000Z	27 \| good	0.125 \| good	0.088 \| good	28.536 \| good	1.572 \| good	4.123 \| good	0.177 \| good
2025-12-08T11:00:00.000Z	25 \| good	1.903 \| good	7.96 \| good	26.893 \| good	1.191 \| good	4.161 \| good	0.171 \| good
2025-12-08T12:00:00.000Z	26 \| good	2.27 \| good	9.022 \| good	28.168 \| good	0.81 \| good	4.199 \| good	0.165 \| good
2025-12-08T13:00:00.000Z	28 \| good	1.874 \| good	8.018 \| good	30.19 \| good	0.778 \| good	3.742 \| good	0.164 \| good
2025-12-08T14:00:00.000Z	28 \| good	2.163 \| good	9.107 \| good	29.508 \| good	0.746 \| good	3.285 \| good	0.164 \| good
2025-12-08T15:00:00.000Z	28 \| good	2.055 \| good	8.09 \| good	29.533 \| good	0.714 \| good	2.828 \| good	0.163 \| good
2025-12-08T16:00:00.000Z	28 \| good	1.334 \| good	5.148 \| good	30.416 \| good	0.745 \| good	2.773 \| good	0.159 \| good
2025-12-08T17:00:00.000Z	28 \| good	0.773 \| good	3.118 \| good	29.966 \| good	0.776 \| good	2.718 \| good	0.155 \| good
2025-12-08T18:00:00.000Z	28 \| good	0.353 \| good	1.135 \| good	29.973 \| good	0.807 \| good	2.662 \| good	0.152 \| good
2025-12-08T19:00:00.000Z	27 \| good	0.209 \| good	0.161 \| good	28.994 \| good	0.859 \| good	3.406 \| good	0.154 \| good
2025-12-08T20:00:00.000Z	28 \| good	0.054 \| good	0.073 \| good	30.178 \| good	0.91 \| good	4.15 \| good	0.156 \| good
2025-12-08T21:00:00.000Z	26 \| good	0.185 \| good	0.186 \| good	27.644 \| good	0.961 \| good	4.894 \| good	0.158 \| good
2025-12-08T22:00:00.000Z	20 \| good	0.904 \| good	3.309 \| good	22.278 \| good	1.094 \| good	7.269 \| good	0.177 \| good
2025-12-08T23:00:00.000Z	16 \| good	2.015 \| good	8.244 \| good	16.58 \| good	1.228 \| good	9.645 \| good	0.196 \| good
2025-12-09T00:00:00.000Z	15 \| good	1.619 \| good	6.268 \| good	16.031 \| good	1.361 \| good	12.021 \| good	0.215 \| good
2025-12-09T01:00:00.000Z	16 \| good	2.232 \| good	9.114 \| good	16.704 \| good	1.345 \| good	11.558 \| good	0.212 \| good
2025-12-09T02:00:00.000Z	16 \| good	2.643 \| good	11.116 \| good	14.881 \| good	1.328 \| good	11.096 \| good	0.209 \| good
2025-12-09T03:00:00.000Z	16 \| good	3.141 \| good	14.098 \| good	11.561 \| good	1.312 \| good	10.634 \| good	0.205 \| good
2025-12-09T04:00:00.000Z	38 \| good	6.795 \| good	29.798 \| good	10.122 \| good	1.242 \| good	9.443 \| good	0.198 \| good
2025-12-09T05:00:00.000Z	33 \| good	5.569 \| good	23.95 \| good	10.646 \| good	1.173 \| good	8.252 \| good	0.191 \| good
2025-12-09T06:00:00.000Z	33 \| good	5.667 \| good	24.012 \| good	10.011 \| good	1.104 \| good	7.062 \| good	0.184 \| good
2025-12-09T07:00:00.000Z	27 \| good	4.766 \| good	20.962 \| good	7.706 \| good	1.266 \| good	7.275 \| good	0.187 \| good
2025-12-09T08:00:00.000Z	22 \| good	4.395 \| good	19.023 \| good	7.385 \| good	1.428 \| good	7.488 \| good	0.19 \| good
2025-12-09T09:00:00.000Z	27 \| good	5.177 \| good	22.09 \| good	5.097 \| good	1.591 \| good	7.701 \| good	0.193 \| good
2025-12-09T10:00:00.000Z	33 \| good	5.982 \| good	26.89 \| good	5.869 \| good	1.948 \| good	10.334 \| good	0.215 \| good
2025-12-09T11:00:00.000Z	44 \| good	8.394 \| good	36.88 \| good	5.94 \| good	2.304 \| good	12.967 \| good	0.236 \| good
2025-12-09T12:00:00.000Z	52 \| moderate	9.68 \| good	42.943 \| good	3.598 \| good	2.661 \| good	15.6 \| good	0.258 \| good
2025-12-09T13:00:00.000Z	56 \| moderate	11.507 \| good	50.99 \| good	5.719 \| good	2.717 \| good	14.619 \| good	0.248 \| good
2025-12-09T14:00:00.000Z	58 \| moderate	12.552 \| fine	57.069 \| fine	8.401 \| good	2.773 \| good	13.639 \| good	0.238 \| good

Norristown

Empower business decisions with accurate air quality data

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

0.69ppm

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 07:00:00 on 2025-12-07.

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

The best air quality in Norristown, Pennsylvania was recorded at 10:00:00 on 2025-12-06.

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

The real-time air quality index in Norristown, Pennsylvania is 75, currently categorized as Moderate.

Which pollutant is found most often in Norristown, Pennsylvania?

The most common pollutant in Norristown, Pennsylvania is PM2.5.

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 21.834 μg/m³.

What are the current PM₁₀ levels at Norristown, Pennsylvania?

The current PM₁₀ levels in Norristown, Pennsylvania are 96.692 μg/m³.

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

The current carbon monoxide (CO) level in Norristown, Pennsylvania is 0.834 ppm.

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

The current sulfur dioxide (SO₂) levels in Norristown, Pennsylvania are 1.017 ppb.

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

The current ozone (O₃) levels at Norristown, Pennsylvania is 6.884 ppm.

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

The current nitrogen dioxide (NO₂) levels at Norristown, Pennsylvania is 26.544 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T15:00:00.000Z	22 \| good	3.132 \| good	12.942 \| good	23.833 \| good	0.346 \| good	20.537 \| good	0.377 \| good
2025-12-05T16:00:00.000Z	22 \| good	3.574 \| good	16.183 \| good	23.533 \| good	0.292 \| good	18.539 \| good	0.359 \| good
2025-12-05T17:00:00.000Z	22 \| good	3.828 \| good	16.706 \| good	23.863 \| good	0.36 \| good	17.599 \| good	0.359 \| good
2025-12-05T18:00:00.000Z	22 \| good	3.912 \| good	17.082 \| good	23.813 \| good	0.499 \| good	18.52 \| good	0.38 \| good
2025-12-05T19:00:00.000Z	22 \| good	4.053 \| good	18.001 \| good	21.308 \| good	0.532 \| good	17.414 \| good	0.313 \| good
2025-12-05T20:00:00.000Z	22 \| good	4.148 \| good	18.098 \| good	19.486 \| good	0.485 \| good	20.547 \| good	0.377 \| good
2025-12-05T21:00:00.000Z	22 \| good	4.253 \| good	18.958 \| good	17.648 \| good	0.486 \| good	21.91 \| good	0.396 \| good
2025-12-05T22:00:00.000Z	27 \| good	4.521 \| good	19.819 \| good	17.213 \| good	0.421 \| good	23.656 \| good	0.417 \| good
2025-12-05T23:00:00.000Z	27 \| good	4.732 \| good	20.923 \| good	17.039 \| good	0.417 \| good	23.391 \| good	0.397 \| good
2025-12-06T00:00:00.000Z	27 \| good	5.135 \| good	22.652 \| good	15.356 \| good	0.416 \| good	20.882 \| good	0.357 \| good
2025-12-06T01:00:00.000Z	27 \| good	5.221 \| good	22.598 \| good	15.392 \| good	0.403 \| good	23.756 \| good	0.378 \| good
2025-12-06T02:00:00.000Z	27 \| good	5.326 \| good	23.566 \| good	15.302 \| good	0.404 \| good	24.868 \| good	0.413 \| good
2025-12-06T03:00:00.000Z	33 \| good	6.235 \| good	27.629 \| good	14.184 \| good	0.423 \| good	23.061 \| good	0.427 \| good
2025-12-06T04:00:00.000Z	38 \| good	6.866 \| good	30.784 \| good	12.435 \| good	0.411 \| good	21.546 \| good	0.428 \| good
2025-12-06T05:00:00.000Z	44 \| good	7.809 \| good	34.537 \| good	9.775 \| good	0.342 \| good	23.414 \| good	0.428 \| good
2025-12-06T06:00:00.000Z	49 \| good	8.814 \| good	38.661 \| good	9.585 \| good	0.343 \| good	25.766 \| good	0.413 \| good
2025-12-06T07:00:00.000Z	52 \| moderate	9.945 \| good	44.914 \| good	9.167 \| good	0.343 \| good	27.57 \| good	0.413 \| good
2025-12-06T08:00:00.000Z	54 \| moderate	10.924 \| good	48.48 \| good	6.66 \| good	0.421 \| good	26.167 \| good	0.428 \| good
2025-12-06T09:00:00.000Z	56 \| moderate	12.399 \| fine	56.12 \| fine	7.214 \| good	0.451 \| good	26.146 \| good	0.423 \| good
2025-12-06T10:00:00.000Z	58 \| moderate	13.431 \| fine	61.036 \| fine	6.631 \| good	0.418 \| good	23.626 \| good	0.43 \| good
2025-12-06T11:00:00.000Z	62 \| moderate	15.078 \| fine	66.825 \| fine	6.189 \| good	0.376 \| good	19.709 \| good	0.409 \| good
2025-12-06T12:00:00.000Z	67 \| moderate	17.683 \| fine	79.114 \| fine	5.65 \| good	0.376 \| good	23.492 \| good	0.413 \| good
2025-12-06T13:00:00.000Z	69 \| moderate	19.4 \| fine	85.208 \| fine	6.921 \| good	0.445 \| good	24.247 \| good	0.427 \| good
2025-12-06T14:00:00.000Z	73 \| moderate	20.747 \| fine	91.607 \| fine	8.26 \| good	0.599 \| good	22.073 \| good	0.469 \| good
2025-12-06T15:00:00.000Z	77 \| moderate	22.579 \| fine	98.632 \| fine	8.343 \| good	0.717 \| good	20.398 \| good	0.529 \| good
2025-12-06T16:00:00.000Z	79 \| moderate	24.015 \| fine	104.819 \| fine	10.608 \| good	0.832 \| good	20.083 \| good	0.545 \| good
2025-12-06T17:00:00.000Z	77 \| moderate	23.119 \| fine	100.519 \| fine	11.714 \| good	0.733 \| good	15.738 \| good	0.499 \| good
2025-12-06T18:00:00.000Z	73 \| moderate	21.087 \| fine	92.905 \| fine	14.733 \| good	0.807 \| good	14.957 \| good	0.525 \| good
2025-12-06T19:00:00.000Z	69 \| moderate	19.451 \| fine	86.445 \| fine	17.428 \| good	0.67 \| good	12.306 \| good	0.457 \| good
2025-12-06T20:00:00.000Z	67 \| moderate	18.404 \| fine	81.321 \| fine	18.772 \| good	0.594 \| good	10.986 \| good	0.403 \| good
2025-12-06T21:00:00.000Z	64 \| moderate	16.369 \| fine	73.23 \| fine	20.895 \| good	0.413 \| good	10.723 \| good	0.363 \| good
2025-12-06T22:00:00.000Z	64 \| moderate	16.131 \| fine	71.744 \| fine	19.28 \| good	0.408 \| good	10.102 \| good	0.368 \| good
2025-12-06T23:00:00.000Z	66 \| moderate	16.994 \| fine	76.211 \| fine	18.366 \| good	0.603 \| good	16.75 \| good	0.342 \| good
2025-12-07T00:00:00.000Z	67 \| moderate	18.414 \| fine	82.275 \| fine	15.115 \| good	0.728 \| good	18.591 \| good	0.364 \| good
2025-12-07T01:00:00.000Z	71 \| moderate	20.297 \| fine	89.377 \| fine	12.297 \| good	0.902 \| good	18.75 \| good	0.388 \| good
2025-12-07T02:00:00.000Z	79 \| moderate	24.402 \| fine	107.097 \| fine	7.096 \| good	1.1 \| good	19.752 \| good	0.456 \| good
2025-12-07T03:00:00.000Z	84 \| moderate	26.776 \| fine	116.93 \| fine	6.715 \| good	1.283 \| good	21.805 \| good	0.654 \| good
2025-12-07T04:00:00.000Z	86 \| moderate	28.092 \| fine	122.214 \| fine	5.089 \| good	1.261 \| good	21.413 \| good	0.674 \| good
2025-12-07T05:00:00.000Z	88 \| moderate	29.181 \| fine	127.589 \| fine	3.096 \| good	1.303 \| good	20.16 \| good	0.719 \| good
2025-12-07T06:00:00.000Z	90 \| moderate	30.317 \| fine	132.322 \| fine	1.394 \| good	1.322 \| good	19.884 \| good	0.678 \| good
2025-12-07T07:00:00.000Z	92 \| moderate	30.765 \| fine	133.68 \| fine	1.347 \| good	1.245 \| good	20.402 \| good	0.703 \| good
2025-12-07T08:00:00.000Z	90 \| moderate	30.403 \| fine	131.435 \| fine	1.165 \| good	1.125 \| good	21.237 \| good	0.667 \| good
2025-12-07T09:00:00.000Z	86 \| moderate	27.991 \| fine	121.766 \| fine	3.359 \| good	0.935 \| good	21.534 \| good	0.573 \| good
2025-12-07T10:00:00.000Z	84 \| moderate	26.736 \| fine	116.996 \| fine	3.07 \| good	0.767 \| good	21.708 \| good	0.526 \| good
2025-12-07T11:00:00.000Z	82 \| moderate	25.524 \| fine	111.292 \| fine	3.094 \| good	0.834 \| good	21.961 \| good	0.568 \| good
2025-12-07T12:00:00.000Z	81 \| moderate	24.645 \| fine	107.828 \| fine	2.204 \| good	0.913 \| good	22.139 \| good	0.635 \| good
2025-12-07T13:00:00.000Z	77 \| moderate	22.967 \| fine	100.285 \| fine	3.426 \| good	1.035 \| good	23.195 \| good	0.653 \| good
2025-12-07T14:00:00.000Z	75 \| moderate	21.762 \| fine	96.253 \| fine	6.235 \| good	1.105 \| good	25.394 \| good	0.822 \| good
2025-12-07T14:00:00.000Z	75 \| moderate	21.834 \| fine	96.692 \| fine	6.884 \| good	1.017 \| good	26.544 \| good	0.834 \| good
2025-12-07T15:00:00.000Z	75 \| moderate	22.381 \| fine	98.822 \| fine	17.716 \| good	4.006 \| good	9.902 \| good	0.298 \| good
2025-12-07T16:00:00.000Z	69 \| moderate	19.234 \| fine	85.077 \| fine	21.285 \| good	3.643 \| good	8.357 \| good	0.263 \| good
2025-12-07T17:00:00.000Z	64 \| moderate	16.352 \| fine	73.035 \| fine	26.3 \| good	3.279 \| good	6.813 \| good	0.229 \| good
2025-12-07T18:00:00.000Z	62 \| moderate	14.733 \| fine	65.339 \| fine	29.809 \| good	2.916 \| good	5.268 \| good	0.194 \| good
2025-12-07T19:00:00.000Z	62 \| moderate	15.034 \| fine	67.139 \| fine	28.501 \| good	3.098 \| good	6.2 \| good	0.196 \| good
2025-12-07T20:00:00.000Z	60 \| moderate	13.987 \| fine	63.16 \| fine	28.6 \| good	3.279 \| good	7.132 \| good	0.198 \| good
2025-12-07T21:00:00.000Z	67 \| moderate	17.644 \| fine	78.963 \| fine	22.71 \| good	3.461 \| good	8.064 \| good	0.201 \| good
2025-12-07T22:00:00.000Z	73 \| moderate	20.927 \| fine	92.971 \| fine	15.179 \| good	3.632 \| good	12.53 \| good	0.24 \| good
2025-12-07T23:00:00.000Z	77 \| moderate	23.229 \| fine	101.44 \| fine	7.589 \| good	3.804 \| good	16.995 \| good	0.28 \| good
2025-12-08T00:00:00.000Z	71 \| moderate	20.318 \| fine	89.547 \| fine	9.098 \| good	3.975 \| good	21.461 \| good	0.32 \| good
2025-12-08T01:00:00.000Z	71 \| moderate	20.498 \| fine	89.691 \| fine	11.874 \| good	4.217 \| good	21.844 \| good	0.327 \| good
2025-12-08T02:00:00.000Z	73 \| moderate	21.181 \| fine	93.514 \| fine	12.106 \| good	4.46 \| good	22.226 \| good	0.334 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	22.426 \| fine	97.596 \| fine	10.933 \| good	4.702 \| good	22.608 \| good	0.341 \| good
2025-12-08T04:00:00.000Z	77 \| moderate	23.416 \| fine	102.875 \| fine	8.814 \| good	4.785 \| good	20.176 \| good	0.323 \| good
2025-12-08T05:00:00.000Z	67 \| moderate	18.24 \| fine	80.761 \| fine	13.186 \| good	4.869 \| good	17.744 \| good	0.305 \| good
2025-12-08T06:00:00.000Z	58 \| moderate	12.604 \| fine	56.853 \| fine	19.272 \| good	4.952 \| good	15.312 \| good	0.287 \| good
2025-12-08T07:00:00.000Z	38 \| good	6.877 \| good	30.053 \| good	23.513 \| good	3.952 \| good	11.57 \| good	0.253 \| good
2025-12-08T08:00:00.000Z	24 \| good	0.548 \| good	2.238 \| good	26.458 \| good	2.953 \| good	7.828 \| good	0.218 \| good
2025-12-08T09:00:00.000Z	27 \| good	0.109 \| good	0.069 \| good	29.368 \| good	1.954 \| good	4.085 \| good	0.183 \| good
2025-12-08T10:00:00.000Z	27 \| good	0.125 \| good	0.088 \| good	28.536 \| good	1.572 \| good	4.123 \| good	0.177 \| good
2025-12-08T11:00:00.000Z	25 \| good	1.903 \| good	7.96 \| good	26.893 \| good	1.191 \| good	4.161 \| good	0.171 \| good
2025-12-08T12:00:00.000Z	26 \| good	2.27 \| good	9.022 \| good	28.168 \| good	0.81 \| good	4.199 \| good	0.165 \| good
2025-12-08T13:00:00.000Z	28 \| good	1.874 \| good	8.018 \| good	30.19 \| good	0.778 \| good	3.742 \| good	0.164 \| good
2025-12-08T14:00:00.000Z	28 \| good	2.163 \| good	9.107 \| good	29.508 \| good	0.746 \| good	3.285 \| good	0.164 \| good
2025-12-08T15:00:00.000Z	28 \| good	2.055 \| good	8.09 \| good	29.533 \| good	0.714 \| good	2.828 \| good	0.163 \| good
2025-12-08T16:00:00.000Z	28 \| good	1.334 \| good	5.148 \| good	30.416 \| good	0.745 \| good	2.773 \| good	0.159 \| good
2025-12-08T17:00:00.000Z	28 \| good	0.773 \| good	3.118 \| good	29.966 \| good	0.776 \| good	2.718 \| good	0.155 \| good
2025-12-08T18:00:00.000Z	28 \| good	0.353 \| good	1.135 \| good	29.973 \| good	0.807 \| good	2.662 \| good	0.152 \| good
2025-12-08T19:00:00.000Z	27 \| good	0.209 \| good	0.161 \| good	28.994 \| good	0.859 \| good	3.406 \| good	0.154 \| good
2025-12-08T20:00:00.000Z	28 \| good	0.054 \| good	0.073 \| good	30.178 \| good	0.91 \| good	4.15 \| good	0.156 \| good
2025-12-08T21:00:00.000Z	26 \| good	0.185 \| good	0.186 \| good	27.644 \| good	0.961 \| good	4.894 \| good	0.158 \| good
2025-12-08T22:00:00.000Z	20 \| good	0.904 \| good	3.309 \| good	22.278 \| good	1.094 \| good	7.269 \| good	0.177 \| good
2025-12-08T23:00:00.000Z	16 \| good	2.015 \| good	8.244 \| good	16.58 \| good	1.228 \| good	9.645 \| good	0.196 \| good
2025-12-09T00:00:00.000Z	15 \| good	1.619 \| good	6.268 \| good	16.031 \| good	1.361 \| good	12.021 \| good	0.215 \| good
2025-12-09T01:00:00.000Z	16 \| good	2.232 \| good	9.114 \| good	16.704 \| good	1.345 \| good	11.558 \| good	0.212 \| good
2025-12-09T02:00:00.000Z	16 \| good	2.643 \| good	11.116 \| good	14.881 \| good	1.328 \| good	11.096 \| good	0.209 \| good
2025-12-09T03:00:00.000Z	16 \| good	3.141 \| good	14.098 \| good	11.561 \| good	1.312 \| good	10.634 \| good	0.205 \| good
2025-12-09T04:00:00.000Z	38 \| good	6.795 \| good	29.798 \| good	10.122 \| good	1.242 \| good	9.443 \| good	0.198 \| good
2025-12-09T05:00:00.000Z	33 \| good	5.569 \| good	23.95 \| good	10.646 \| good	1.173 \| good	8.252 \| good	0.191 \| good
2025-12-09T06:00:00.000Z	33 \| good	5.667 \| good	24.012 \| good	10.011 \| good	1.104 \| good	7.062 \| good	0.184 \| good
2025-12-09T07:00:00.000Z	27 \| good	4.766 \| good	20.962 \| good	7.706 \| good	1.266 \| good	7.275 \| good	0.187 \| good
2025-12-09T08:00:00.000Z	22 \| good	4.395 \| good	19.023 \| good	7.385 \| good	1.428 \| good	7.488 \| good	0.19 \| good
2025-12-09T09:00:00.000Z	27 \| good	5.177 \| good	22.09 \| good	5.097 \| good	1.591 \| good	7.701 \| good	0.193 \| good
2025-12-09T10:00:00.000Z	33 \| good	5.982 \| good	26.89 \| good	5.869 \| good	1.948 \| good	10.334 \| good	0.215 \| good
2025-12-09T11:00:00.000Z	44 \| good	8.394 \| good	36.88 \| good	5.94 \| good	2.304 \| good	12.967 \| good	0.236 \| good
2025-12-09T12:00:00.000Z	52 \| moderate	9.68 \| good	42.943 \| good	3.598 \| good	2.661 \| good	15.6 \| good	0.258 \| good
2025-12-09T13:00:00.000Z	56 \| moderate	11.507 \| good	50.99 \| good	5.719 \| good	2.717 \| good	14.619 \| good	0.248 \| good
2025-12-09T14:00:00.000Z	58 \| moderate	12.552 \| fine	57.069 \| fine	8.401 \| good	2.773 \| good	13.639 \| good	0.238 \| good

Real-time air quality index in Norristown, Pennsylvania today

Common air pollutants in Norristown, Pennsylvania

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Norristown, Pennsylvania air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

East Norriton, Pennsylvania

Plymouth Township, Pennsylvania

West Norriton, Pennsylvania

Upper Merion, Pennsylvania

Whitpain, Pennsylvania

Lower Providence, Pennsylvania

How accurate is Pennsylvania, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

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

Which pollutant is found most often in Norristown, Pennsylvania?

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

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

What are the current PM10 levels at Norristown, Pennsylvania?

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

What are the current PM₁₀ levels at Norristown, Pennsylvania?

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

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

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