What is the sulfur dioxide (SO2) level in Willistown, Pennsylvania at the moment?

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.366 ppb.

What is the ozone (O3) level in Willistown, Pennsylvania at the moment?

The current ozone (O3) level in Willistown, Pennsylvania at the moment is 35.801 ppm.

What is the nitrogen dioxide (NO2) level in Willistown, Pennsylvania at the moment?

Nitrogen dioxide (NO2) level in Willistown, Pennsylvania at the moment is 10.91 ppb.

Live air quality index in Willistown, Pennsylvania today

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

Stay updated with real-time air quality in Willistown, 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

Willistown, Pennsylvania

Last updated: ... (Local time)

Major air pollutants in Willistown, Pennsylvania

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.43 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

16.85 μg/m³

155

255

425

605+

Ozone (O₃)

35.80 ppb

201

201+

Sulfur Dioxide (SO₂)

0.37 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

10.91 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.34 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Willistown, Pennsylvania

Get Live Pollen Counts

Willistown, Pennsylvania

Scroll To Air Quality Map

Track live Willistown, Pennsylvania air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-20T03:00:00.000Z	37 \| good	5.801 \| good	23.579 \| good	40.054 \| good	0.276 \| good	5.398 \| good	0.254 \| good
2025-10-20T04:00:00.000Z	37 \| good	4.8 \| good	24.018 \| good	39.775 \| good	0.216 \| good	4.683 \| good	0.254 \| good
2025-10-20T05:00:00.000Z	36 \| good	4.328 \| good	19.006 \| good	38.833 \| good	0.211 \| good	4.704 \| good	0.277 \| good
2025-10-20T06:00:00.000Z	37 \| good	3.41 \| good	19.324 \| good	39.906 \| good	0.275 \| good	3.72 \| good	0.244 \| good
2025-10-20T07:00:00.000Z	38 \| good	3.222 \| good	16.36 \| good	40.792 \| good	0.237 \| good	2.865 \| good	0.221 \| good
2025-10-20T08:00:00.000Z	34 \| good	2.723 \| good	12.063 \| good	37.162 \| good	0.247 \| good	3.214 \| good	0.236 \| good
2025-10-20T09:00:00.000Z	30 \| good	2.456 \| good	9.223 \| good	31.622 \| good	0.243 \| good	4.534 \| good	0.236 \| good
2025-10-20T10:00:00.000Z	31 \| good	2.641 \| good	13.02 \| good	33.962 \| good	0.27 \| good	4.766 \| good	0.275 \| good
2025-10-20T11:00:00.000Z	27 \| good	2.639 \| good	10.876 \| good	29.075 \| good	0.265 \| good	3.986 \| good	0.275 \| good
2025-10-20T12:00:00.000Z	26 \| good	1.681 \| good	6.78 \| good	28.429 \| good	0.247 \| good	3.752 \| good	0.279 \| good
2025-10-20T13:00:00.000Z	26 \| good	1.943 \| good	7.467 \| good	28.152 \| good	0.309 \| good	5.466 \| good	0.256 \| good
2025-10-20T14:00:00.000Z	24 \| good	1.298 \| good	5.12 \| good	25.544 \| good	0.313 \| good	4.731 \| good	0.245 \| good
2025-10-20T15:00:00.000Z	24 \| good	1.509 \| good	5.795 \| good	25.512 \| good	0.223 \| good	5.559 \| good	0.245 \| good
2025-10-20T16:00:00.000Z	26 \| good	2.013 \| good	9.452 \| good	28.145 \| good	0.202 \| good	3.691 \| good	0.276 \| good
2025-10-20T17:00:00.000Z	28 \| good	2.438 \| good	30.127 \| good	29.259 \| good	0.282 \| good	3.134 \| good	0.251 \| good
2025-10-20T18:00:00.000Z	28 \| good	2.614 \| good	10.696 \| good	29.898 \| good	0.189 \| good	3.469 \| good	0.199 \| good
2025-10-20T19:00:00.000Z	28 \| good	3.786 \| good	15.581 \| good	30.052 \| good	0.207 \| good	3.202 \| good	0.199 \| good
2025-10-20T20:00:00.000Z	28 \| good	3.885 \| good	19.505 \| good	29.744 \| good	0.243 \| good	3.089 \| good	0.192 \| good
2025-10-20T21:00:00.000Z	29 \| good	3.328 \| good	14.017 \| good	30.53 \| good	0.196 \| good	3.353 \| good	0.199 \| good
2025-10-20T22:00:00.000Z	28 \| good	3.198 \| good	15.612 \| good	29.663 \| good	0.214 \| good	2.82 \| good	0.192 \| good
2025-10-20T23:00:00.000Z	27 \| good	2.86 \| good	10.767 \| good	29.169 \| good	0.178 \| good	3.586 \| good	0.213 \| good
2025-10-21T00:00:00.000Z	25 \| good	3.006 \| good	12.901 \| good	27.451 \| good	0.164 \| good	4.388 \| good	0.246 \| good
2025-10-21T01:00:00.000Z	26 \| good	3.57 \| good	15.37 \| good	27.641 \| good	0.18 \| good	5.862 \| good	0.246 \| good
2025-10-21T02:00:00.000Z	25 \| good	4.005 \| good	15.055 \| good	26.594 \| good	0.178 \| good	6.549 \| good	0.263 \| good
2025-10-21T03:00:00.000Z	27 \| good	5.118 \| good	21.954 \| good	22.663 \| good	1.41 \| good	6.375 \| good	0.147 \| good
2025-10-21T04:00:00.000Z	22 \| good	3.962 \| good	17.599 \| good	22.709 \| good	0.184 \| good	7.623 \| good	0.289 \| good
2025-10-21T05:00:00.000Z	22 \| good	4.269 \| good	16.883 \| good	21.617 \| good	0.199 \| good	8.418 \| good	0.289 \| good
2025-10-21T06:00:00.000Z	27 \| good	4.542 \| good	19.389 \| good	19.473 \| good	0.192 \| good	8.261 \| good	0.221 \| good
2025-10-21T07:00:00.000Z	27 \| good	4.653 \| good	20.565 \| good	17.82 \| good	0.177 \| good	8.797 \| good	0.27 \| good
2025-10-21T08:00:00.000Z	27 \| good	4.591 \| good	25.683 \| good	17.588 \| good	0.201 \| good	8.21 \| good	0.245 \| good
2025-10-21T09:00:00.000Z	33 \| good	5.625 \| good	24.852 \| good	8.01 \| good	0.201 \| good	7.67 \| good	0.234 \| good
2025-10-21T10:00:00.000Z	33 \| good	5.766 \| good	35.249 \| good	10.903 \| good	0.264 \| good	9.935 \| good	0.288 \| good
2025-10-21T11:00:00.000Z	33 \| good	5.539 \| good	25.925 \| good	8.14 \| good	0.255 \| good	15.69 \| good	0.299 \| good
2025-10-21T12:00:00.000Z	27 \| good	5.206 \| good	20.984 \| good	8.793 \| good	0.254 \| good	17.383 \| good	0.397 \| good
2025-10-21T13:00:00.000Z	27 \| good	5.469 \| good	19.583 \| good	5.045 \| good	0.354 \| good	18.745 \| good	0.462 \| good
2025-10-21T14:00:00.000Z	33 \| good	6.448 \| good	22.879 \| good	7.882 \| good	0.661 \| good	21.388 \| good	0.459 \| good
2025-10-21T15:00:00.000Z	38 \| good	7.286 \| good	29.99 \| good	10.935 \| good	1.009 \| good	12.002 \| good	0.342 \| good
2025-10-21T16:00:00.000Z	27 \| good	5.292 \| good	23.248 \| good	17.809 \| good	0.688 \| good	8.736 \| good	0.299 \| good
2025-10-21T17:00:00.000Z	24 \| good	3.884 \| good	18.022 \| good	25.677 \| good	0.373 \| good	9.206 \| good	0.267 \| good
2025-10-21T18:00:00.000Z	28 \| good	3.579 \| good	19.339 \| good	29.939 \| good	0.27 \| good	7.763 \| good	0.267 \| good
2025-10-21T19:00:00.000Z	32 \| good	3.369 \| good	20.88 \| good	34.568 \| good	0.289 \| good	6.448 \| good	0.233 \| good
2025-10-21T20:00:00.000Z	35 \| good	4.036 \| good	15.078 \| good	37.613 \| good	0.286 \| good	5.802 \| good	0.233 \| good
2025-10-21T21:00:00.000Z	35 \| good	3.625 \| good	16.893 \| good	37.88 \| good	0.28 \| good	6.666 \| good	0.275 \| good
2025-10-21T22:00:00.000Z	35 \| good	4.083 \| good	18.5 \| good	37.697 \| good	0.298 \| good	7.705 \| good	0.275 \| good
2025-10-21T23:00:00.000Z	36 \| good	4.991 \| good	20.201 \| good	38.896 \| good	0.315 \| good	8.245 \| good	0.301 \| good
2025-10-22T00:00:00.000Z	31 \| good	5.193 \| good	24.165 \| good	33.026 \| good	0.319 \| good	12.043 \| good	0.325 \| good
2025-10-22T01:00:00.000Z	33 \| good	4.465 \| good	22.097 \| good	36.208 \| good	0.347 \| good	11.072 \| good	0.325 \| good
2025-10-22T02:00:00.000Z	33 \| good	4.43 \| good	16.85 \| good	35.801 \| good	0.366 \| good	10.91 \| good	0.341 \| good
2025-10-22T03:00:00.000Z	44 \| good	8.135 \| good	35.853 \| good	31.643 \| good	1.226 \| good	5.568 \| good	0.17 \| good
2025-10-22T04:00:00.000Z	44 \| good	8.21 \| good	36.058 \| good	26.867 \| good	1.243 \| good	5.272 \| good	0.166 \| good
2025-10-22T05:00:00.000Z	44 \| good	8.417 \| good	36.84 \| good	24.532 \| good	1.259 \| good	4.976 \| good	0.162 \| good
2025-10-22T06:00:00.000Z	44 \| good	7.895 \| good	34.463 \| good	27.12 \| good	1.276 \| good	4.68 \| good	0.158 \| good
2025-10-22T07:00:00.000Z	38 \| good	7.399 \| good	32.583 \| good	25.979 \| good	1.327 \| good	5.052 \| good	0.162 \| good
2025-10-22T08:00:00.000Z	49 \| good	8.754 \| good	38.389 \| good	20.461 \| good	1.378 \| good	5.423 \| good	0.167 \| good
2025-10-22T09:00:00.000Z	49 \| good	8.978 \| good	39.849 \| good	17.462 \| good	1.428 \| good	5.795 \| good	0.172 \| good
2025-10-22T10:00:00.000Z	44 \| good	7.708 \| good	33.944 \| good	16.208 \| good	1.787 \| good	5.76 \| good	0.169 \| good
2025-10-22T11:00:00.000Z	27 \| good	5.462 \| good	23.41 \| good	18.488 \| good	2.146 \| good	5.725 \| good	0.166 \| good
2025-10-22T12:00:00.000Z	27 \| good	4.786 \| good	21.02 \| good	21.097 \| good	2.505 \| good	5.69 \| good	0.163 \| good
2025-10-22T13:00:00.000Z	27 \| good	4.563 \| good	20.015 \| good	23.903 \| good	2.421 \| good	4.526 \| good	0.153 \| good
2025-10-22T14:00:00.000Z	28 \| good	2.891 \| good	12.086 \| good	29.678 \| good	2.337 \| good	3.363 \| good	0.144 \| good
2025-10-22T15:00:00.000Z	32 \| good	2.146 \| good	8.962 \| good	35.233 \| good	2.253 \| good	2.2 \| good	0.135 \| good
2025-10-22T16:00:00.000Z	34 \| good	2.327 \| good	9.528 \| good	37.279 \| good	1.986 \| good	1.988 \| good	0.132 \| good
2025-10-22T17:00:00.000Z	34 \| good	4.013 \| good	17.843 \| good	36.575 \| good	1.719 \| good	1.776 \| good	0.129 \| good
2025-10-22T18:00:00.000Z	31 \| good	4.101 \| good	18.005 \| good	33.734 \| good	1.452 \| good	1.564 \| good	0.126 \| good
2025-10-22T19:00:00.000Z	30 \| good	4.357 \| good	19 \| good	31.901 \| good	1.421 \| good	1.808 \| good	0.128 \| good
2025-10-22T20:00:00.000Z	29 \| good	3.866 \| good	16.975 \| good	31.03 \| good	1.39 \| good	2.051 \| good	0.13 \| good
2025-10-22T21:00:00.000Z	30 \| good	3.965 \| good	17.356 \| good	31.987 \| good	1.359 \| good	2.295 \| good	0.132 \| good
2025-10-22T22:00:00.000Z	28 \| good	4 \| good	17.386 \| good	30.464 \| good	1.301 \| good	3.268 \| good	0.139 \| good
2025-10-22T23:00:00.000Z	26 \| good	4.134 \| good	18.295 \| good	27.962 \| good	1.244 \| good	4.241 \| good	0.145 \| good
2025-10-23T00:00:00.000Z	25 \| good	4.45 \| good	19.506 \| good	26.869 \| good	1.187 \| good	5.213 \| good	0.152 \| good
2025-10-23T01:00:00.000Z	27 \| good	5.196 \| good	22.557 \| good	27.184 \| good	1.291 \| good	5.032 \| good	0.15 \| good
2025-10-23T02:00:00.000Z	33 \| good	5.867 \| good	26.03 \| good	27.094 \| good	1.396 \| good	4.851 \| good	0.148 \| good
2025-10-23T03:00:00.000Z	33 \| good	6.167 \| good	27.505 \| good	26.557 \| good	1.501 \| good	4.67 \| good	0.146 \| good
2025-10-23T04:00:00.000Z	33 \| good	6.083 \| good	27.058 \| good	25.002 \| good	1.634 \| good	4.473 \| good	0.144 \| good
2025-10-23T05:00:00.000Z	33 \| good	5.605 \| good	24.077 \| good	22.923 \| good	1.767 \| good	4.276 \| good	0.141 \| good
2025-10-23T06:00:00.000Z	33 \| good	5.742 \| good	24.729 \| good	21.656 \| good	1.901 \| good	4.079 \| good	0.138 \| good
2025-10-23T07:00:00.000Z	33 \| good	5.557 \| good	23.736 \| good	20.781 \| good	2.037 \| good	4.097 \| good	0.138 \| good
2025-10-23T08:00:00.000Z	33 \| good	5.815 \| good	25.278 \| good	19.349 \| good	2.174 \| good	4.114 \| good	0.137 \| good
2025-10-23T09:00:00.000Z	33 \| good	6.071 \| good	27.058 \| good	17.553 \| good	2.311 \| good	4.132 \| good	0.137 \| good
2025-10-23T10:00:00.000Z	33 \| good	6.071 \| good	27.016 \| good	16.348 \| good	2.363 \| good	4.877 \| good	0.144 \| good
2025-10-23T11:00:00.000Z	33 \| good	6.405 \| good	28.654 \| good	14.294 \| good	2.414 \| good	5.622 \| good	0.151 \| good
2025-10-23T12:00:00.000Z	38 \| good	6.691 \| good	29.709 \| good	16.942 \| good	2.466 \| good	6.367 \| good	0.158 \| good
2025-10-23T13:00:00.000Z	27 \| good	5.324 \| good	22.993 \| good	24.171 \| good	2.278 \| good	5.064 \| good	0.152 \| good
2025-10-23T14:00:00.000Z	31 \| good	4.567 \| good	19.868 \| good	33.719 \| good	2.09 \| good	3.761 \| good	0.146 \| good
2025-10-23T15:00:00.000Z	35 \| good	5.175 \| good	22.288 \| good	38.155 \| good	1.902 \| good	2.458 \| good	0.14 \| good
2025-10-23T16:00:00.000Z	37 \| good	4.905 \| good	21 \| good	39.748 \| good	1.702 \| good	2.204 \| good	0.138 \| good
2025-10-23T17:00:00.000Z	36 \| good	4.434 \| good	19.03 \| good	38.971 \| good	1.501 \| good	1.951 \| good	0.136 \| good
2025-10-23T18:00:00.000Z	33 \| good	3.99 \| good	17.49 \| good	36.068 \| good	1.301 \| good	1.697 \| good	0.135 \| good
2025-10-23T19:00:00.000Z	32 \| good	3.793 \| good	16.37 \| good	34.97 \| good	1.315 \| good	1.933 \| good	0.136 \| good
2025-10-23T20:00:00.000Z	30 \| good	3.293 \| good	14.388 \| good	31.861 \| good	1.329 \| good	2.169 \| good	0.137 \| good
2025-10-23T21:00:00.000Z	29 \| good	3.156 \| good	13.789 \| good	31.432 \| good	1.343 \| good	2.404 \| good	0.138 \| good
2025-10-23T22:00:00.000Z	27 \| good	2.868 \| good	11.641 \| good	29.025 \| good	1.455 \| good	3.737 \| good	0.147 \| good
2025-10-23T23:00:00.000Z	25 \| good	3.193 \| good	13.584 \| good	26.713 \| good	1.568 \| good	5.07 \| good	0.157 \| good
2025-10-24T00:00:00.000Z	25 \| good	4.339 \| good	4.363 \| good	26.552 \| good	1.679 \| good	6.336 \| good	0.166 \| good
2025-10-24T01:00:00.000Z	27 \| good	5.257 \| good	22.764 \| good	26.081 \| good	1.73 \| good	6.642 \| good	0.168 \| good
2025-10-24T02:00:00.000Z	33 \| good	6.204 \| good	27.654 \| good	23.901 \| good	1.779 \| good	6.88 \| good	0.17 \| good

Willistown

Get reliable air quality data to drive your business

Willistown, Pennsylvania air quality map: Stay updated on AQI near you

0.32ppm

How accurate is Pennsylvania, USA air quality data?

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

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Willistown, Pennsylvania?

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

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

In the past 24 hours, the air quality in Willistown, Pennsylvania was at its worst at 03:00:00 on 2025-10-21.

When did Willistown, Pennsylvania experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Willistown, Pennsylvania was observed at 05:00:00 on 2025-10-21.

What is the AQI in Willistown, Pennsylvania right now?

As of now, the AQI in Willistown, Pennsylvania is 33, indicating Good conditions.

What is the most common type of pollution in Willistown, Pennsylvania?

Willistown, Pennsylvania air has the highest levels of O3.

What should I do in case of poor air quality in Willistown, Pennsylvania?

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

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

PM_2.5 levels in Willistown, Pennsylvania are currently 4.43 μg/m³.

What is the PM₁₀ level in Willistown, Pennsylvania at the moment?

The PM₁₀ concentration in Willistown, Pennsylvania is 16.85 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Willistown, Pennsylvania at the moment?

The current carbon monoxide (CO) concentration in Willistown, Pennsylvania is 0.341 ppm.

What is the sulfur dioxide (SO₂) level in Willistown, Pennsylvania at the moment?

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO₂) concentration of 0.366 ppb.

What is the ozone (O₃) level in Willistown, Pennsylvania at the moment?

The current ozone (O₃) level in Willistown, Pennsylvania at the moment is 35.801 ppm.

What is the nitrogen dioxide (NO₂) level in Willistown, Pennsylvania at the moment?

Nitrogen dioxide (NO₂) level in Willistown, Pennsylvania at the moment is 10.91 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-20T03:00:00.000Z	37 \| good	5.801 \| good	23.579 \| good	40.054 \| good	0.276 \| good	5.398 \| good	0.254 \| good
2025-10-20T04:00:00.000Z	37 \| good	4.8 \| good	24.018 \| good	39.775 \| good	0.216 \| good	4.683 \| good	0.254 \| good
2025-10-20T05:00:00.000Z	36 \| good	4.328 \| good	19.006 \| good	38.833 \| good	0.211 \| good	4.704 \| good	0.277 \| good
2025-10-20T06:00:00.000Z	37 \| good	3.41 \| good	19.324 \| good	39.906 \| good	0.275 \| good	3.72 \| good	0.244 \| good
2025-10-20T07:00:00.000Z	38 \| good	3.222 \| good	16.36 \| good	40.792 \| good	0.237 \| good	2.865 \| good	0.221 \| good
2025-10-20T08:00:00.000Z	34 \| good	2.723 \| good	12.063 \| good	37.162 \| good	0.247 \| good	3.214 \| good	0.236 \| good
2025-10-20T09:00:00.000Z	30 \| good	2.456 \| good	9.223 \| good	31.622 \| good	0.243 \| good	4.534 \| good	0.236 \| good
2025-10-20T10:00:00.000Z	31 \| good	2.641 \| good	13.02 \| good	33.962 \| good	0.27 \| good	4.766 \| good	0.275 \| good
2025-10-20T11:00:00.000Z	27 \| good	2.639 \| good	10.876 \| good	29.075 \| good	0.265 \| good	3.986 \| good	0.275 \| good
2025-10-20T12:00:00.000Z	26 \| good	1.681 \| good	6.78 \| good	28.429 \| good	0.247 \| good	3.752 \| good	0.279 \| good
2025-10-20T13:00:00.000Z	26 \| good	1.943 \| good	7.467 \| good	28.152 \| good	0.309 \| good	5.466 \| good	0.256 \| good
2025-10-20T14:00:00.000Z	24 \| good	1.298 \| good	5.12 \| good	25.544 \| good	0.313 \| good	4.731 \| good	0.245 \| good
2025-10-20T15:00:00.000Z	24 \| good	1.509 \| good	5.795 \| good	25.512 \| good	0.223 \| good	5.559 \| good	0.245 \| good
2025-10-20T16:00:00.000Z	26 \| good	2.013 \| good	9.452 \| good	28.145 \| good	0.202 \| good	3.691 \| good	0.276 \| good
2025-10-20T17:00:00.000Z	28 \| good	2.438 \| good	30.127 \| good	29.259 \| good	0.282 \| good	3.134 \| good	0.251 \| good
2025-10-20T18:00:00.000Z	28 \| good	2.614 \| good	10.696 \| good	29.898 \| good	0.189 \| good	3.469 \| good	0.199 \| good
2025-10-20T19:00:00.000Z	28 \| good	3.786 \| good	15.581 \| good	30.052 \| good	0.207 \| good	3.202 \| good	0.199 \| good
2025-10-20T20:00:00.000Z	28 \| good	3.885 \| good	19.505 \| good	29.744 \| good	0.243 \| good	3.089 \| good	0.192 \| good
2025-10-20T21:00:00.000Z	29 \| good	3.328 \| good	14.017 \| good	30.53 \| good	0.196 \| good	3.353 \| good	0.199 \| good
2025-10-20T22:00:00.000Z	28 \| good	3.198 \| good	15.612 \| good	29.663 \| good	0.214 \| good	2.82 \| good	0.192 \| good
2025-10-20T23:00:00.000Z	27 \| good	2.86 \| good	10.767 \| good	29.169 \| good	0.178 \| good	3.586 \| good	0.213 \| good
2025-10-21T00:00:00.000Z	25 \| good	3.006 \| good	12.901 \| good	27.451 \| good	0.164 \| good	4.388 \| good	0.246 \| good
2025-10-21T01:00:00.000Z	26 \| good	3.57 \| good	15.37 \| good	27.641 \| good	0.18 \| good	5.862 \| good	0.246 \| good
2025-10-21T02:00:00.000Z	25 \| good	4.005 \| good	15.055 \| good	26.594 \| good	0.178 \| good	6.549 \| good	0.263 \| good
2025-10-21T03:00:00.000Z	27 \| good	5.118 \| good	21.954 \| good	22.663 \| good	1.41 \| good	6.375 \| good	0.147 \| good
2025-10-21T04:00:00.000Z	22 \| good	3.962 \| good	17.599 \| good	22.709 \| good	0.184 \| good	7.623 \| good	0.289 \| good
2025-10-21T05:00:00.000Z	22 \| good	4.269 \| good	16.883 \| good	21.617 \| good	0.199 \| good	8.418 \| good	0.289 \| good
2025-10-21T06:00:00.000Z	27 \| good	4.542 \| good	19.389 \| good	19.473 \| good	0.192 \| good	8.261 \| good	0.221 \| good
2025-10-21T07:00:00.000Z	27 \| good	4.653 \| good	20.565 \| good	17.82 \| good	0.177 \| good	8.797 \| good	0.27 \| good
2025-10-21T08:00:00.000Z	27 \| good	4.591 \| good	25.683 \| good	17.588 \| good	0.201 \| good	8.21 \| good	0.245 \| good
2025-10-21T09:00:00.000Z	33 \| good	5.625 \| good	24.852 \| good	8.01 \| good	0.201 \| good	7.67 \| good	0.234 \| good
2025-10-21T10:00:00.000Z	33 \| good	5.766 \| good	35.249 \| good	10.903 \| good	0.264 \| good	9.935 \| good	0.288 \| good
2025-10-21T11:00:00.000Z	33 \| good	5.539 \| good	25.925 \| good	8.14 \| good	0.255 \| good	15.69 \| good	0.299 \| good
2025-10-21T12:00:00.000Z	27 \| good	5.206 \| good	20.984 \| good	8.793 \| good	0.254 \| good	17.383 \| good	0.397 \| good
2025-10-21T13:00:00.000Z	27 \| good	5.469 \| good	19.583 \| good	5.045 \| good	0.354 \| good	18.745 \| good	0.462 \| good
2025-10-21T14:00:00.000Z	33 \| good	6.448 \| good	22.879 \| good	7.882 \| good	0.661 \| good	21.388 \| good	0.459 \| good
2025-10-21T15:00:00.000Z	38 \| good	7.286 \| good	29.99 \| good	10.935 \| good	1.009 \| good	12.002 \| good	0.342 \| good
2025-10-21T16:00:00.000Z	27 \| good	5.292 \| good	23.248 \| good	17.809 \| good	0.688 \| good	8.736 \| good	0.299 \| good
2025-10-21T17:00:00.000Z	24 \| good	3.884 \| good	18.022 \| good	25.677 \| good	0.373 \| good	9.206 \| good	0.267 \| good
2025-10-21T18:00:00.000Z	28 \| good	3.579 \| good	19.339 \| good	29.939 \| good	0.27 \| good	7.763 \| good	0.267 \| good
2025-10-21T19:00:00.000Z	32 \| good	3.369 \| good	20.88 \| good	34.568 \| good	0.289 \| good	6.448 \| good	0.233 \| good
2025-10-21T20:00:00.000Z	35 \| good	4.036 \| good	15.078 \| good	37.613 \| good	0.286 \| good	5.802 \| good	0.233 \| good
2025-10-21T21:00:00.000Z	35 \| good	3.625 \| good	16.893 \| good	37.88 \| good	0.28 \| good	6.666 \| good	0.275 \| good
2025-10-21T22:00:00.000Z	35 \| good	4.083 \| good	18.5 \| good	37.697 \| good	0.298 \| good	7.705 \| good	0.275 \| good
2025-10-21T23:00:00.000Z	36 \| good	4.991 \| good	20.201 \| good	38.896 \| good	0.315 \| good	8.245 \| good	0.301 \| good
2025-10-22T00:00:00.000Z	31 \| good	5.193 \| good	24.165 \| good	33.026 \| good	0.319 \| good	12.043 \| good	0.325 \| good
2025-10-22T01:00:00.000Z	33 \| good	4.465 \| good	22.097 \| good	36.208 \| good	0.347 \| good	11.072 \| good	0.325 \| good
2025-10-22T02:00:00.000Z	33 \| good	4.43 \| good	16.85 \| good	35.801 \| good	0.366 \| good	10.91 \| good	0.341 \| good
2025-10-22T03:00:00.000Z	44 \| good	8.135 \| good	35.853 \| good	31.643 \| good	1.226 \| good	5.568 \| good	0.17 \| good
2025-10-22T04:00:00.000Z	44 \| good	8.21 \| good	36.058 \| good	26.867 \| good	1.243 \| good	5.272 \| good	0.166 \| good
2025-10-22T05:00:00.000Z	44 \| good	8.417 \| good	36.84 \| good	24.532 \| good	1.259 \| good	4.976 \| good	0.162 \| good
2025-10-22T06:00:00.000Z	44 \| good	7.895 \| good	34.463 \| good	27.12 \| good	1.276 \| good	4.68 \| good	0.158 \| good
2025-10-22T07:00:00.000Z	38 \| good	7.399 \| good	32.583 \| good	25.979 \| good	1.327 \| good	5.052 \| good	0.162 \| good
2025-10-22T08:00:00.000Z	49 \| good	8.754 \| good	38.389 \| good	20.461 \| good	1.378 \| good	5.423 \| good	0.167 \| good
2025-10-22T09:00:00.000Z	49 \| good	8.978 \| good	39.849 \| good	17.462 \| good	1.428 \| good	5.795 \| good	0.172 \| good
2025-10-22T10:00:00.000Z	44 \| good	7.708 \| good	33.944 \| good	16.208 \| good	1.787 \| good	5.76 \| good	0.169 \| good
2025-10-22T11:00:00.000Z	27 \| good	5.462 \| good	23.41 \| good	18.488 \| good	2.146 \| good	5.725 \| good	0.166 \| good
2025-10-22T12:00:00.000Z	27 \| good	4.786 \| good	21.02 \| good	21.097 \| good	2.505 \| good	5.69 \| good	0.163 \| good
2025-10-22T13:00:00.000Z	27 \| good	4.563 \| good	20.015 \| good	23.903 \| good	2.421 \| good	4.526 \| good	0.153 \| good
2025-10-22T14:00:00.000Z	28 \| good	2.891 \| good	12.086 \| good	29.678 \| good	2.337 \| good	3.363 \| good	0.144 \| good
2025-10-22T15:00:00.000Z	32 \| good	2.146 \| good	8.962 \| good	35.233 \| good	2.253 \| good	2.2 \| good	0.135 \| good
2025-10-22T16:00:00.000Z	34 \| good	2.327 \| good	9.528 \| good	37.279 \| good	1.986 \| good	1.988 \| good	0.132 \| good
2025-10-22T17:00:00.000Z	34 \| good	4.013 \| good	17.843 \| good	36.575 \| good	1.719 \| good	1.776 \| good	0.129 \| good
2025-10-22T18:00:00.000Z	31 \| good	4.101 \| good	18.005 \| good	33.734 \| good	1.452 \| good	1.564 \| good	0.126 \| good
2025-10-22T19:00:00.000Z	30 \| good	4.357 \| good	19 \| good	31.901 \| good	1.421 \| good	1.808 \| good	0.128 \| good
2025-10-22T20:00:00.000Z	29 \| good	3.866 \| good	16.975 \| good	31.03 \| good	1.39 \| good	2.051 \| good	0.13 \| good
2025-10-22T21:00:00.000Z	30 \| good	3.965 \| good	17.356 \| good	31.987 \| good	1.359 \| good	2.295 \| good	0.132 \| good
2025-10-22T22:00:00.000Z	28 \| good	4 \| good	17.386 \| good	30.464 \| good	1.301 \| good	3.268 \| good	0.139 \| good
2025-10-22T23:00:00.000Z	26 \| good	4.134 \| good	18.295 \| good	27.962 \| good	1.244 \| good	4.241 \| good	0.145 \| good
2025-10-23T00:00:00.000Z	25 \| good	4.45 \| good	19.506 \| good	26.869 \| good	1.187 \| good	5.213 \| good	0.152 \| good
2025-10-23T01:00:00.000Z	27 \| good	5.196 \| good	22.557 \| good	27.184 \| good	1.291 \| good	5.032 \| good	0.15 \| good
2025-10-23T02:00:00.000Z	33 \| good	5.867 \| good	26.03 \| good	27.094 \| good	1.396 \| good	4.851 \| good	0.148 \| good
2025-10-23T03:00:00.000Z	33 \| good	6.167 \| good	27.505 \| good	26.557 \| good	1.501 \| good	4.67 \| good	0.146 \| good
2025-10-23T04:00:00.000Z	33 \| good	6.083 \| good	27.058 \| good	25.002 \| good	1.634 \| good	4.473 \| good	0.144 \| good
2025-10-23T05:00:00.000Z	33 \| good	5.605 \| good	24.077 \| good	22.923 \| good	1.767 \| good	4.276 \| good	0.141 \| good
2025-10-23T06:00:00.000Z	33 \| good	5.742 \| good	24.729 \| good	21.656 \| good	1.901 \| good	4.079 \| good	0.138 \| good
2025-10-23T07:00:00.000Z	33 \| good	5.557 \| good	23.736 \| good	20.781 \| good	2.037 \| good	4.097 \| good	0.138 \| good
2025-10-23T08:00:00.000Z	33 \| good	5.815 \| good	25.278 \| good	19.349 \| good	2.174 \| good	4.114 \| good	0.137 \| good
2025-10-23T09:00:00.000Z	33 \| good	6.071 \| good	27.058 \| good	17.553 \| good	2.311 \| good	4.132 \| good	0.137 \| good
2025-10-23T10:00:00.000Z	33 \| good	6.071 \| good	27.016 \| good	16.348 \| good	2.363 \| good	4.877 \| good	0.144 \| good
2025-10-23T11:00:00.000Z	33 \| good	6.405 \| good	28.654 \| good	14.294 \| good	2.414 \| good	5.622 \| good	0.151 \| good
2025-10-23T12:00:00.000Z	38 \| good	6.691 \| good	29.709 \| good	16.942 \| good	2.466 \| good	6.367 \| good	0.158 \| good
2025-10-23T13:00:00.000Z	27 \| good	5.324 \| good	22.993 \| good	24.171 \| good	2.278 \| good	5.064 \| good	0.152 \| good
2025-10-23T14:00:00.000Z	31 \| good	4.567 \| good	19.868 \| good	33.719 \| good	2.09 \| good	3.761 \| good	0.146 \| good
2025-10-23T15:00:00.000Z	35 \| good	5.175 \| good	22.288 \| good	38.155 \| good	1.902 \| good	2.458 \| good	0.14 \| good
2025-10-23T16:00:00.000Z	37 \| good	4.905 \| good	21 \| good	39.748 \| good	1.702 \| good	2.204 \| good	0.138 \| good
2025-10-23T17:00:00.000Z	36 \| good	4.434 \| good	19.03 \| good	38.971 \| good	1.501 \| good	1.951 \| good	0.136 \| good
2025-10-23T18:00:00.000Z	33 \| good	3.99 \| good	17.49 \| good	36.068 \| good	1.301 \| good	1.697 \| good	0.135 \| good
2025-10-23T19:00:00.000Z	32 \| good	3.793 \| good	16.37 \| good	34.97 \| good	1.315 \| good	1.933 \| good	0.136 \| good
2025-10-23T20:00:00.000Z	30 \| good	3.293 \| good	14.388 \| good	31.861 \| good	1.329 \| good	2.169 \| good	0.137 \| good
2025-10-23T21:00:00.000Z	29 \| good	3.156 \| good	13.789 \| good	31.432 \| good	1.343 \| good	2.404 \| good	0.138 \| good
2025-10-23T22:00:00.000Z	27 \| good	2.868 \| good	11.641 \| good	29.025 \| good	1.455 \| good	3.737 \| good	0.147 \| good
2025-10-23T23:00:00.000Z	25 \| good	3.193 \| good	13.584 \| good	26.713 \| good	1.568 \| good	5.07 \| good	0.157 \| good
2025-10-24T00:00:00.000Z	25 \| good	4.339 \| good	4.363 \| good	26.552 \| good	1.679 \| good	6.336 \| good	0.166 \| good
2025-10-24T01:00:00.000Z	27 \| good	5.257 \| good	22.764 \| good	26.081 \| good	1.73 \| good	6.642 \| good	0.168 \| good
2025-10-24T02:00:00.000Z	33 \| good	6.204 \| good	27.654 \| good	23.901 \| good	1.779 \| good	6.88 \| good	0.17 \| good

Live air quality index in Willistown, Pennsylvania today

Major air pollutants in Willistown, Pennsylvania

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Willistown, Pennsylvania air quality map: Stay updated on AQI near you

Air quality in nearby cities

Westtown, Pennsylvania

East Goshen, Pennsylvania

Easttown, Pennsylvania

West Goshen, Pennsylvania

West Chester, Pennsylvania

Concord Township, Pennsylvania

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Frequently asked questions

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What is the PM2.5 level in Willistown, Pennsylvania at the moment?

What is the PM10 level in Willistown, Pennsylvania at the moment?

What is the carbon monoxide (CO) level in Willistown, Pennsylvania at the moment?

What is the sulfur dioxide (SO2) level in Willistown, Pennsylvania at the moment?

What is the ozone (O3) level in Willistown, Pennsylvania at the moment?

What is the nitrogen dioxide (NO2) level in Willistown, Pennsylvania at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

What is the PM₁₀ level in Willistown, Pennsylvania at the moment?

What is the sulfur dioxide (SO₂) level in Willistown, Pennsylvania at the moment?

What is the ozone (O₃) level in Willistown, Pennsylvania at the moment?

What is the nitrogen dioxide (NO₂) level in Willistown, Pennsylvania at the moment?