What are the current PM10 levels at Norristown, Pennsylvania?

The current PM10 levels in Norristown, Pennsylvania are 51.15 μg/m3.

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

The current sulfur dioxide (SO2) levels in Norristown, Pennsylvania are 0.455 ppb.

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

The current ozone (O3) levels at Norristown, Pennsylvania is 40.821 ppm.

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

The current nitrogen dioxide (NO2) levels at Norristown, Pennsylvania is 7.279 ppb.

Real-time air quality index in Norristown, Pennsylvania today

Name: Live air pollution levels in Norristown, Pennsylvania today
Creator: Ambee

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)

2.47 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

10.37 μg/m³

155

255

425

605+

Ozone (O₃)

18.03 ppb

201

201+

Sulfur Dioxide (SO₂)

0.23 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.00 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 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
2025-07-30T11:00:00.000Z	56 \| moderate	12.2 \| fine	55 \| fine	24 \| good	0.912 \| good	21.617 \| good	0.447 \| good
2025-07-30T12:00:00.000Z	56 \| moderate	12.3 \| fine	55 \| fine	23 \| good	1.106 \| good	23.871 \| good	0.557 \| good
2025-07-30T13:00:00.000Z	58 \| moderate	12.5 \| fine	57 \| fine	32 \| good	0.889 \| good	24.867 \| good	0.562 \| good
2025-07-30T14:00:00.000Z	58 \| moderate	12.5 \| fine	57 \| fine	37 \| good	1.069 \| good	19.202 \| good	0.495 \| good
2025-07-30T15:00:00.000Z	58 \| moderate	12.5 \| fine	57 \| fine	37 \| good	0.821 \| good	17.068 \| good	0.39 \| good
2025-07-30T16:00:00.000Z	56 \| moderate	12.4 \| fine	57 \| fine	52 \| good	0.905 \| good	8.779 \| good	0.368 \| good
2025-07-30T17:00:00.000Z	56 \| moderate	12.3 \| fine	55 \| fine	53 \| good	0.937 \| good	7.018 \| good	0.365 \| good
2025-07-30T18:00:00.000Z	61 \| moderate	12.3 \| fine	55 \| fine	58 \| fine	0.928 \| good	8.358 \| good	0.312 \| good
2025-07-30T19:00:00.000Z	77 \| moderate	12.4 \| fine	57 \| fine	63 \| fine	0.666 \| good	8.685 \| good	0.329 \| good
2025-07-30T20:00:00.000Z	77 \| moderate	12.4 \| fine	57 \| fine	63 \| fine	0.648 \| good	6.345 \| good	0.363 \| good
2025-07-30T21:00:00.000Z	71 \| moderate	12.1 \| fine	55 \| fine	61 \| fine	0.572 \| good	6.468 \| good	0.384 \| good
2025-07-30T22:00:00.000Z	58 \| moderate	11.8 \| good	52 \| good	57 \| fine	0.585 \| good	6.605 \| good	0.384 \| good
2025-07-30T23:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	56 \| fine	0.585 \| good	8.048 \| good	0.35 \| good
2025-07-31T00:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	49 \| good	0.332 \| good	6.95 \| good	0.329 \| good
2025-07-31T01:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	44 \| good	0.317 \| good	6.137 \| good	0.329 \| good
2025-07-31T02:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	44 \| good	0.492 \| good	10.034 \| good	0.371 \| good
2025-07-31T03:00:00.000Z	54 \| moderate	11.4 \| good	51 \| good	42 \| good	0.317 \| good	7.801 \| good	0.354 \| good
2025-07-31T04:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	38 \| good	0.321 \| good	9.954 \| good	0.359 \| good
2025-07-31T05:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	32 \| good	0.649 \| good	10.225 \| good	0.354 \| good
2025-07-31T06:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	31 \| good	0.863 \| good	8.591 \| good	0.349 \| good
2025-07-31T07:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	31 \| good	0.715 \| good	5.217 \| good	0.312 \| good
2025-07-31T08:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	28 \| good	0.487 \| good	7.214 \| good	0.312 \| good
2025-07-31T09:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	26 \| good	0.37 \| good	7.396 \| good	0.312 \| good
2025-07-31T10:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	23 \| good	0.439 \| good	9.713 \| good	0.312 \| good
2025-07-31T11:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	20 \| good	0.423 \| good	8.884 \| good	0.312 \| good
2025-07-31T12:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	20 \| good	0.374 \| good	15.598 \| good	0.342 \| good
2025-07-31T13:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	26 \| good	0.346 \| good	17.538 \| good	0.434 \| good
2025-07-31T14:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	25 \| good	0.348 \| good	17.412 \| good	0.485 \| good
2025-07-31T15:00:00.000Z	54 \| moderate	11.2 \| good	50 \| good	32 \| good	0.335 \| good	13.494 \| good	0.451 \| good
2025-07-31T16:00:00.000Z	54 \| moderate	11.2 \| good	50 \| good	38 \| good	0.484 \| good	11.03 \| good	0.41 \| good
2025-07-31T17:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	40 \| good	0.772 \| good	8.936 \| good	0.371 \| good
2025-07-31T18:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	41 \| good	0.298 \| good	9.159 \| good	0.354 \| good
2025-07-31T19:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	41 \| good	0.625 \| good	7.143 \| good	0.354 \| good
2025-07-31T20:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	41 \| good	0.455 \| good	7.222 \| good	0.337 \| good
2025-07-31T21:00:00.000Z	38 \| good	6.736 \| good	29.692 \| good	41 \| good	0.359 \| good	13.057 \| good	0.378 \| good
2025-07-31T22:00:00.000Z	33 \| good	6.1 \| good	27 \| good	36 \| good	0.306 \| good	15.869 \| good	0.395 \| good
2025-07-31T23:00:00.000Z	31 \| good	5.236 \| good	22.43 \| good	33.732 \| good	1.186 \| good	8.508 \| good	0.252 \| good
2025-08-01T00:00:00.000Z	58 \| moderate	13 \| fine	59 \| fine	25 \| good	0.312 \| good	12.917 \| good	0.449 \| good
2025-08-01T01:00:00.000Z	60 \| moderate	14 \| fine	63 \| fine	20 \| good	0.297 \| good	8.479 \| good	0.444 \| good
2025-08-01T02:00:00.000Z	56 \| moderate	12 \| good	54 \| good	19 \| good	0.21 \| good	7.406 \| good	0.452 \| good
2025-08-01T03:00:00.000Z	52 \| moderate	9.5 \| good	43 \| good	16 \| good	0.275 \| good	7.663 \| good	0.444 \| good
2025-08-01T04:00:00.000Z	44 \| good	7.7 \| good	34 \| good	17 \| good	0.233 \| good	6.825 \| good	0.444 \| good
2025-08-01T05:00:00.000Z	38 \| good	6.7 \| good	30 \| good	15 \| good	0.225 \| good	7.098 \| good	0.394 \| good
2025-08-01T06:00:00.000Z	33 \| good	5.6 \| good	24 \| good	12 \| good	0.241 \| good	6.848 \| good	0.394 \| good
2025-08-01T07:00:00.000Z	22 \| good	4.2 \| good	19 \| good	12 \| good	0.221 \| good	6.165 \| good	0.389 \| good
2025-08-01T08:00:00.000Z	16 \| good	2.6 \| good	11 \| good	16 \| good	0.214 \| good	5.996 \| good	0.368 \| good
2025-08-01T09:00:00.000Z	16 \| good	2 \| good	8 \| good	17 \| good	0.246 \| good	5.471 \| good	0.318 \| good
2025-08-01T10:00:00.000Z	17 \| good	2.4 \| good	10 \| good	18 \| good	0.231 \| good	5.97 \| good	0.318 \| good
2025-08-01T10:00:00.000Z	17 \| good	2.473 \| good	10.365 \| good	18.027 \| good	0.233 \| good	6.001 \| good	0.317 \| good
2025-07-31T22:00:00.000Z	67 \| moderate	17.655 \| fine	78.561 \| fine	39.989 \| good	1.291 \| good	6.126 \| good	0.241 \| good
2025-07-31T23:00:00.000Z	64 \| moderate	15.508 \| fine	68.901 \| fine	34.243 \| good	1.322 \| good	7.143 \| good	0.251 \| good
2025-08-01T00:00:00.000Z	58 \| moderate	12.634 \| fine	56.884 \| fine	31.797 \| good	1.352 \| good	8.16 \| good	0.26 \| good
2025-08-01T01:00:00.000Z	56 \| moderate	12.065 \| good	54.258 \| good	27.627 \| good	1.292 \| good	8.115 \| good	0.267 \| good
2025-08-01T02:00:00.000Z	56 \| moderate	12.321 \| fine	55.397 \| fine	26.727 \| good	1.233 \| good	8.07 \| good	0.275 \| good
2025-08-01T03:00:00.000Z	58 \| moderate	13.341 \| fine	59.733 \| fine	27.261 \| good	1.173 \| good	8.025 \| good	0.282 \| good
2025-08-01T04:00:00.000Z	62 \| moderate	14.68 \| fine	65.788 \| fine	28.802 \| good	1.088 \| good	6.836 \| good	0.276 \| good
2025-08-01T05:00:00.000Z	62 \| moderate	14.59 \| fine	65.363 \| fine	26.991 \| good	1.002 \| good	5.647 \| good	0.269 \| good
2025-08-01T06:00:00.000Z	56 \| moderate	11.752 \| good	52.278 \| good	24.794 \| good	0.917 \| good	4.458 \| good	0.263 \| good
2025-08-01T07:00:00.000Z	54 \| moderate	11.458 \| good	50.636 \| good	23.301 \| good	0.895 \| good	4.125 \| good	0.251 \| good
2025-08-01T08:00:00.000Z	58 \| moderate	13.337 \| fine	59.531 \| fine	20.245 \| good	0.873 \| good	3.792 \| good	0.24 \| good
2025-08-01T09:00:00.000Z	56 \| moderate	12.418 \| fine	56.161 \| fine	17.914 \| good	0.85 \| good	3.458 \| good	0.229 \| good
2025-08-01T10:00:00.000Z	49 \| good	9.276 \| good	41.297 \| good	22.404 \| good	0.894 \| good	3.549 \| good	0.226 \| good
2025-08-01T11:00:00.000Z	44 \| good	7.802 \| good	34.125 \| good	23.219 \| good	0.937 \| good	3.64 \| good	0.222 \| good
2025-08-01T12:00:00.000Z	33 \| good	6.006 \| good	26.248 \| good	22.39 \| good	0.981 \| good	3.731 \| good	0.218 \| good
2025-08-01T13:00:00.000Z	33 \| good	5.878 \| good	25.332 \| good	20.737 \| good	0.981 \| good	3.388 \| good	0.216 \| good
2025-08-01T14:00:00.000Z	38 \| good	6.994 \| good	31.103 \| good	23.243 \| good	0.98 \| good	3.045 \| good	0.215 \| good
2025-08-01T15:00:00.000Z	38 \| good	6.653 \| good	29.615 \| good	24.229 \| good	0.98 \| good	2.701 \| good	0.213 \| good
2025-08-01T16:00:00.000Z	38 \| good	6.585 \| good	29.147 \| good	24.511 \| good	0.944 \| good	2.477 \| good	0.209 \| good
2025-08-01T17:00:00.000Z	33 \| good	5.889 \| good	26.038 \| good	27.334 \| good	0.909 \| good	2.252 \| good	0.206 \| good
2025-08-01T18:00:00.000Z	31 \| good	5.46 \| good	23.845 \| good	33.487 \| good	0.873 \| good	2.028 \| good	0.202 \| good
2025-08-01T19:00:00.000Z	34 \| good	5.994 \| good	26.595 \| good	37.361 \| good	0.835 \| good	1.958 \| good	0.197 \| good
2025-08-01T20:00:00.000Z	38 \| good	6.497 \| good	28.999 \| good	41.276 \| good	0.796 \| good	1.887 \| good	0.193 \| good
2025-08-01T21:00:00.000Z	39 \| good	7.498 \| good	33.091 \| good	42.105 \| good	0.758 \| good	1.817 \| good	0.188 \| good
2025-08-01T22:00:00.000Z	40 \| good	7.229 \| good	32.094 \| good	42.529 \| good	0.825 \| good	3.632 \| good	0.204 \| good
2025-08-01T23:00:00.000Z	42 \| good	6.923 \| good	30.799 \| good	44.81 \| good	0.893 \| good	5.447 \| good	0.221 \| good
2025-08-02T00:00:00.000Z	52 \| moderate	9.587 \| good	42.897 \| good	35.551 \| good	0.96 \| good	7.262 \| good	0.237 \| good
2025-08-02T01:00:00.000Z	49 \| good	9.118 \| good	40.535 \| good	32.721 \| good	1.042 \| good	8.747 \| good	0.252 \| good
2025-08-02T02:00:00.000Z	52 \| moderate	9.974 \| good	44.419 \| good	32.386 \| good	1.124 \| good	10.233 \| good	0.266 \| good
2025-08-02T03:00:00.000Z	52 \| moderate	9.807 \| good	43.503 \| good	30.347 \| good	1.207 \| good	11.719 \| good	0.281 \| good
2025-08-02T04:00:00.000Z	54 \| moderate	10.611 \| good	47.005 \| good	27.515 \| good	1.152 \| good	10.382 \| good	0.268 \| good
2025-08-02T05:00:00.000Z	58 \| moderate	12.509 \| fine	55.966 \| fine	25.962 \| good	1.098 \| good	9.045 \| good	0.256 \| good
2025-08-02T06:00:00.000Z	56 \| moderate	12.254 \| fine	54.96 \| good	25.364 \| good	1.044 \| good	7.708 \| good	0.243 \| good
2025-08-02T07:00:00.000Z	54 \| moderate	10.798 \| good	47.971 \| good	21.82 \| good	0.957 \| good	6.483 \| good	0.224 \| good
2025-08-02T08:00:00.000Z	52 \| moderate	9.624 \| good	42.943 \| good	18.74 \| good	0.869 \| good	5.258 \| good	0.204 \| good
2025-08-02T09:00:00.000Z	49 \| good	9.01 \| good	39.664 \| good	16.118 \| good	0.782 \| good	4.033 \| good	0.185 \| good
2025-08-02T10:00:00.000Z	54 \| moderate	10.788 \| good	47.956 \| good	15.852 \| good	0.796 \| good	4.1 \| good	0.188 \| good
2025-08-02T11:00:00.000Z	52 \| moderate	10.126 \| good	45.103 \| good	18.84 \| good	0.811 \| good	4.166 \| good	0.191 \| good
2025-08-02T12:00:00.000Z	52 \| moderate	10.1 \| good	45.008 \| good	27.27 \| good	0.825 \| good	4.232 \| good	0.194 \| good
2025-08-02T13:00:00.000Z	44 \| good	8.013 \| good	35.145 \| good	30.676 \| good	0.959 \| good	3.681 \| good	0.192 \| good
2025-08-02T14:00:00.000Z	33 \| good	6.257 \| good	27.838 \| good	30.289 \| good	1.093 \| good	3.13 \| good	0.19 \| good
2025-08-02T15:00:00.000Z	27 \| good	5.423 \| good	23.331 \| good	28.7 \| good	1.227 \| good	2.579 \| good	0.188 \| good
2025-08-02T16:00:00.000Z	28 \| good	4.618 \| good	19.945 \| good	29.79 \| good	1.065 \| good	2.085 \| good	0.178 \| good
2025-08-02T17:00:00.000Z	32 \| good	5.386 \| good	23.265 \| good	35.069 \| good	0.902 \| good	1.592 \| good	0.167 \| good
2025-08-02T18:00:00.000Z	37 \| good	5.743 \| good	24.98 \| good	40.106 \| good	0.74 \| good	1.098 \| good	0.157 \| good
2025-08-02T19:00:00.000Z	40 \| good	6.36 \| good	28.187 \| good	43.28 \| good	0.739 \| good	1.213 \| good	0.157 \| good
2025-08-02T20:00:00.000Z	42 \| good	6.703 \| good	29.982 \| good	45.121 \| good	0.737 \| good	1.327 \| good	0.157 \| good
2025-08-02T21:00:00.000Z	41 \| good	6.603 \| good	29.288 \| good	44.249 \| good	0.736 \| good	1.442 \| good	0.157 \| good

Norristown

Empower business decisions with accurate air quality data

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

0.34ppm

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 09:00:00 on 2025-07-30.

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

The best air quality in Norristown, Pennsylvania was recorded at 05:00:00 on 2025-07-31.

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

The real-time air quality index in Norristown, Pennsylvania is 56, 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 11.531 μg/m³.

What are the current PM₁₀ levels at Norristown, Pennsylvania?

The current PM₁₀ levels in Norristown, Pennsylvania are 51.15 μg/m³.

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

The current carbon monoxide (CO) level in Norristown, Pennsylvania is 0.336 ppm.

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

The current sulfur dioxide (SO₂) levels in Norristown, Pennsylvania are 0.455 ppb.

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

The current ozone (O₃) levels at Norristown, Pennsylvania is 40.821 ppm.

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

The current nitrogen dioxide (NO₂) levels at Norristown, Pennsylvania is 7.279 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-30T11:00:00.000Z	56 \| moderate	12.2 \| fine	55 \| fine	24 \| good	0.912 \| good	21.617 \| good	0.447 \| good
2025-07-30T12:00:00.000Z	56 \| moderate	12.3 \| fine	55 \| fine	23 \| good	1.106 \| good	23.871 \| good	0.557 \| good
2025-07-30T13:00:00.000Z	58 \| moderate	12.5 \| fine	57 \| fine	32 \| good	0.889 \| good	24.867 \| good	0.562 \| good
2025-07-30T14:00:00.000Z	58 \| moderate	12.5 \| fine	57 \| fine	37 \| good	1.069 \| good	19.202 \| good	0.495 \| good
2025-07-30T15:00:00.000Z	58 \| moderate	12.5 \| fine	57 \| fine	37 \| good	0.821 \| good	17.068 \| good	0.39 \| good
2025-07-30T16:00:00.000Z	56 \| moderate	12.4 \| fine	57 \| fine	52 \| good	0.905 \| good	8.779 \| good	0.368 \| good
2025-07-30T17:00:00.000Z	56 \| moderate	12.3 \| fine	55 \| fine	53 \| good	0.937 \| good	7.018 \| good	0.365 \| good
2025-07-30T18:00:00.000Z	61 \| moderate	12.3 \| fine	55 \| fine	58 \| fine	0.928 \| good	8.358 \| good	0.312 \| good
2025-07-30T19:00:00.000Z	77 \| moderate	12.4 \| fine	57 \| fine	63 \| fine	0.666 \| good	8.685 \| good	0.329 \| good
2025-07-30T20:00:00.000Z	77 \| moderate	12.4 \| fine	57 \| fine	63 \| fine	0.648 \| good	6.345 \| good	0.363 \| good
2025-07-30T21:00:00.000Z	71 \| moderate	12.1 \| fine	55 \| fine	61 \| fine	0.572 \| good	6.468 \| good	0.384 \| good
2025-07-30T22:00:00.000Z	58 \| moderate	11.8 \| good	52 \| good	57 \| fine	0.585 \| good	6.605 \| good	0.384 \| good
2025-07-30T23:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	56 \| fine	0.585 \| good	8.048 \| good	0.35 \| good
2025-07-31T00:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	49 \| good	0.332 \| good	6.95 \| good	0.329 \| good
2025-07-31T01:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	44 \| good	0.317 \| good	6.137 \| good	0.329 \| good
2025-07-31T02:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	44 \| good	0.492 \| good	10.034 \| good	0.371 \| good
2025-07-31T03:00:00.000Z	54 \| moderate	11.4 \| good	51 \| good	42 \| good	0.317 \| good	7.801 \| good	0.354 \| good
2025-07-31T04:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	38 \| good	0.321 \| good	9.954 \| good	0.359 \| good
2025-07-31T05:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	32 \| good	0.649 \| good	10.225 \| good	0.354 \| good
2025-07-31T06:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	31 \| good	0.863 \| good	8.591 \| good	0.349 \| good
2025-07-31T07:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	31 \| good	0.715 \| good	5.217 \| good	0.312 \| good
2025-07-31T08:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	28 \| good	0.487 \| good	7.214 \| good	0.312 \| good
2025-07-31T09:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	26 \| good	0.37 \| good	7.396 \| good	0.312 \| good
2025-07-31T10:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	23 \| good	0.439 \| good	9.713 \| good	0.312 \| good
2025-07-31T11:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	20 \| good	0.423 \| good	8.884 \| good	0.312 \| good
2025-07-31T12:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	20 \| good	0.374 \| good	15.598 \| good	0.342 \| good
2025-07-31T13:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	26 \| good	0.346 \| good	17.538 \| good	0.434 \| good
2025-07-31T14:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	25 \| good	0.348 \| good	17.412 \| good	0.485 \| good
2025-07-31T15:00:00.000Z	54 \| moderate	11.2 \| good	50 \| good	32 \| good	0.335 \| good	13.494 \| good	0.451 \| good
2025-07-31T16:00:00.000Z	54 \| moderate	11.2 \| good	50 \| good	38 \| good	0.484 \| good	11.03 \| good	0.41 \| good
2025-07-31T17:00:00.000Z	54 \| moderate	11.3 \| good	50 \| good	40 \| good	0.772 \| good	8.936 \| good	0.371 \| good
2025-07-31T18:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	41 \| good	0.298 \| good	9.159 \| good	0.354 \| good
2025-07-31T19:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	41 \| good	0.625 \| good	7.143 \| good	0.354 \| good
2025-07-31T20:00:00.000Z	56 \| moderate	11.5 \| good	51 \| good	41 \| good	0.455 \| good	7.222 \| good	0.337 \| good
2025-07-31T21:00:00.000Z	38 \| good	6.736 \| good	29.692 \| good	41 \| good	0.359 \| good	13.057 \| good	0.378 \| good
2025-07-31T22:00:00.000Z	33 \| good	6.1 \| good	27 \| good	36 \| good	0.306 \| good	15.869 \| good	0.395 \| good
2025-07-31T23:00:00.000Z	31 \| good	5.236 \| good	22.43 \| good	33.732 \| good	1.186 \| good	8.508 \| good	0.252 \| good
2025-08-01T00:00:00.000Z	58 \| moderate	13 \| fine	59 \| fine	25 \| good	0.312 \| good	12.917 \| good	0.449 \| good
2025-08-01T01:00:00.000Z	60 \| moderate	14 \| fine	63 \| fine	20 \| good	0.297 \| good	8.479 \| good	0.444 \| good
2025-08-01T02:00:00.000Z	56 \| moderate	12 \| good	54 \| good	19 \| good	0.21 \| good	7.406 \| good	0.452 \| good
2025-08-01T03:00:00.000Z	52 \| moderate	9.5 \| good	43 \| good	16 \| good	0.275 \| good	7.663 \| good	0.444 \| good
2025-08-01T04:00:00.000Z	44 \| good	7.7 \| good	34 \| good	17 \| good	0.233 \| good	6.825 \| good	0.444 \| good
2025-08-01T05:00:00.000Z	38 \| good	6.7 \| good	30 \| good	15 \| good	0.225 \| good	7.098 \| good	0.394 \| good
2025-08-01T06:00:00.000Z	33 \| good	5.6 \| good	24 \| good	12 \| good	0.241 \| good	6.848 \| good	0.394 \| good
2025-08-01T07:00:00.000Z	22 \| good	4.2 \| good	19 \| good	12 \| good	0.221 \| good	6.165 \| good	0.389 \| good
2025-08-01T08:00:00.000Z	16 \| good	2.6 \| good	11 \| good	16 \| good	0.214 \| good	5.996 \| good	0.368 \| good
2025-08-01T09:00:00.000Z	16 \| good	2 \| good	8 \| good	17 \| good	0.246 \| good	5.471 \| good	0.318 \| good
2025-08-01T10:00:00.000Z	17 \| good	2.4 \| good	10 \| good	18 \| good	0.231 \| good	5.97 \| good	0.318 \| good
2025-08-01T10:00:00.000Z	17 \| good	2.473 \| good	10.365 \| good	18.027 \| good	0.233 \| good	6.001 \| good	0.317 \| good
2025-07-31T22:00:00.000Z	67 \| moderate	17.655 \| fine	78.561 \| fine	39.989 \| good	1.291 \| good	6.126 \| good	0.241 \| good
2025-07-31T23:00:00.000Z	64 \| moderate	15.508 \| fine	68.901 \| fine	34.243 \| good	1.322 \| good	7.143 \| good	0.251 \| good
2025-08-01T00:00:00.000Z	58 \| moderate	12.634 \| fine	56.884 \| fine	31.797 \| good	1.352 \| good	8.16 \| good	0.26 \| good
2025-08-01T01:00:00.000Z	56 \| moderate	12.065 \| good	54.258 \| good	27.627 \| good	1.292 \| good	8.115 \| good	0.267 \| good
2025-08-01T02:00:00.000Z	56 \| moderate	12.321 \| fine	55.397 \| fine	26.727 \| good	1.233 \| good	8.07 \| good	0.275 \| good
2025-08-01T03:00:00.000Z	58 \| moderate	13.341 \| fine	59.733 \| fine	27.261 \| good	1.173 \| good	8.025 \| good	0.282 \| good
2025-08-01T04:00:00.000Z	62 \| moderate	14.68 \| fine	65.788 \| fine	28.802 \| good	1.088 \| good	6.836 \| good	0.276 \| good
2025-08-01T05:00:00.000Z	62 \| moderate	14.59 \| fine	65.363 \| fine	26.991 \| good	1.002 \| good	5.647 \| good	0.269 \| good
2025-08-01T06:00:00.000Z	56 \| moderate	11.752 \| good	52.278 \| good	24.794 \| good	0.917 \| good	4.458 \| good	0.263 \| good
2025-08-01T07:00:00.000Z	54 \| moderate	11.458 \| good	50.636 \| good	23.301 \| good	0.895 \| good	4.125 \| good	0.251 \| good
2025-08-01T08:00:00.000Z	58 \| moderate	13.337 \| fine	59.531 \| fine	20.245 \| good	0.873 \| good	3.792 \| good	0.24 \| good
2025-08-01T09:00:00.000Z	56 \| moderate	12.418 \| fine	56.161 \| fine	17.914 \| good	0.85 \| good	3.458 \| good	0.229 \| good
2025-08-01T10:00:00.000Z	49 \| good	9.276 \| good	41.297 \| good	22.404 \| good	0.894 \| good	3.549 \| good	0.226 \| good
2025-08-01T11:00:00.000Z	44 \| good	7.802 \| good	34.125 \| good	23.219 \| good	0.937 \| good	3.64 \| good	0.222 \| good
2025-08-01T12:00:00.000Z	33 \| good	6.006 \| good	26.248 \| good	22.39 \| good	0.981 \| good	3.731 \| good	0.218 \| good
2025-08-01T13:00:00.000Z	33 \| good	5.878 \| good	25.332 \| good	20.737 \| good	0.981 \| good	3.388 \| good	0.216 \| good
2025-08-01T14:00:00.000Z	38 \| good	6.994 \| good	31.103 \| good	23.243 \| good	0.98 \| good	3.045 \| good	0.215 \| good
2025-08-01T15:00:00.000Z	38 \| good	6.653 \| good	29.615 \| good	24.229 \| good	0.98 \| good	2.701 \| good	0.213 \| good
2025-08-01T16:00:00.000Z	38 \| good	6.585 \| good	29.147 \| good	24.511 \| good	0.944 \| good	2.477 \| good	0.209 \| good
2025-08-01T17:00:00.000Z	33 \| good	5.889 \| good	26.038 \| good	27.334 \| good	0.909 \| good	2.252 \| good	0.206 \| good
2025-08-01T18:00:00.000Z	31 \| good	5.46 \| good	23.845 \| good	33.487 \| good	0.873 \| good	2.028 \| good	0.202 \| good
2025-08-01T19:00:00.000Z	34 \| good	5.994 \| good	26.595 \| good	37.361 \| good	0.835 \| good	1.958 \| good	0.197 \| good
2025-08-01T20:00:00.000Z	38 \| good	6.497 \| good	28.999 \| good	41.276 \| good	0.796 \| good	1.887 \| good	0.193 \| good
2025-08-01T21:00:00.000Z	39 \| good	7.498 \| good	33.091 \| good	42.105 \| good	0.758 \| good	1.817 \| good	0.188 \| good
2025-08-01T22:00:00.000Z	40 \| good	7.229 \| good	32.094 \| good	42.529 \| good	0.825 \| good	3.632 \| good	0.204 \| good
2025-08-01T23:00:00.000Z	42 \| good	6.923 \| good	30.799 \| good	44.81 \| good	0.893 \| good	5.447 \| good	0.221 \| good
2025-08-02T00:00:00.000Z	52 \| moderate	9.587 \| good	42.897 \| good	35.551 \| good	0.96 \| good	7.262 \| good	0.237 \| good
2025-08-02T01:00:00.000Z	49 \| good	9.118 \| good	40.535 \| good	32.721 \| good	1.042 \| good	8.747 \| good	0.252 \| good
2025-08-02T02:00:00.000Z	52 \| moderate	9.974 \| good	44.419 \| good	32.386 \| good	1.124 \| good	10.233 \| good	0.266 \| good
2025-08-02T03:00:00.000Z	52 \| moderate	9.807 \| good	43.503 \| good	30.347 \| good	1.207 \| good	11.719 \| good	0.281 \| good
2025-08-02T04:00:00.000Z	54 \| moderate	10.611 \| good	47.005 \| good	27.515 \| good	1.152 \| good	10.382 \| good	0.268 \| good
2025-08-02T05:00:00.000Z	58 \| moderate	12.509 \| fine	55.966 \| fine	25.962 \| good	1.098 \| good	9.045 \| good	0.256 \| good
2025-08-02T06:00:00.000Z	56 \| moderate	12.254 \| fine	54.96 \| good	25.364 \| good	1.044 \| good	7.708 \| good	0.243 \| good
2025-08-02T07:00:00.000Z	54 \| moderate	10.798 \| good	47.971 \| good	21.82 \| good	0.957 \| good	6.483 \| good	0.224 \| good
2025-08-02T08:00:00.000Z	52 \| moderate	9.624 \| good	42.943 \| good	18.74 \| good	0.869 \| good	5.258 \| good	0.204 \| good
2025-08-02T09:00:00.000Z	49 \| good	9.01 \| good	39.664 \| good	16.118 \| good	0.782 \| good	4.033 \| good	0.185 \| good
2025-08-02T10:00:00.000Z	54 \| moderate	10.788 \| good	47.956 \| good	15.852 \| good	0.796 \| good	4.1 \| good	0.188 \| good
2025-08-02T11:00:00.000Z	52 \| moderate	10.126 \| good	45.103 \| good	18.84 \| good	0.811 \| good	4.166 \| good	0.191 \| good
2025-08-02T12:00:00.000Z	52 \| moderate	10.1 \| good	45.008 \| good	27.27 \| good	0.825 \| good	4.232 \| good	0.194 \| good
2025-08-02T13:00:00.000Z	44 \| good	8.013 \| good	35.145 \| good	30.676 \| good	0.959 \| good	3.681 \| good	0.192 \| good
2025-08-02T14:00:00.000Z	33 \| good	6.257 \| good	27.838 \| good	30.289 \| good	1.093 \| good	3.13 \| good	0.19 \| good
2025-08-02T15:00:00.000Z	27 \| good	5.423 \| good	23.331 \| good	28.7 \| good	1.227 \| good	2.579 \| good	0.188 \| good
2025-08-02T16:00:00.000Z	28 \| good	4.618 \| good	19.945 \| good	29.79 \| good	1.065 \| good	2.085 \| good	0.178 \| good
2025-08-02T17:00:00.000Z	32 \| good	5.386 \| good	23.265 \| good	35.069 \| good	0.902 \| good	1.592 \| good	0.167 \| good
2025-08-02T18:00:00.000Z	37 \| good	5.743 \| good	24.98 \| good	40.106 \| good	0.74 \| good	1.098 \| good	0.157 \| good
2025-08-02T19:00:00.000Z	40 \| good	6.36 \| good	28.187 \| good	43.28 \| good	0.739 \| good	1.213 \| good	0.157 \| good
2025-08-02T20:00:00.000Z	42 \| good	6.703 \| good	29.982 \| good	45.121 \| good	0.737 \| good	1.327 \| good	0.157 \| good
2025-08-02T21:00:00.000Z	41 \| good	6.603 \| good	29.288 \| good	44.249 \| good	0.736 \| good	1.442 \| good	0.157 \| 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?