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

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.207 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 52.308 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 4.036 ppb.

Live air quality index in Willistown, Pennsylvania today

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

PM2.5 levels in Willistown, Pennsylvania are currently 4.232 μg/m3.

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

The PM10 concentration in Willistown, Pennsylvania is 20.671 μg/m3 at the moment.

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)

4.23 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

20.67 μg/m³

155

255

425

605+

Ozone (O₃)

52.31 ppb

201

201+

Sulfur Dioxide (SO₂)

0.21 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.04 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 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
2026-07-21T23:00:00.000Z	38 \| good	7.432 \| good	38.039 \| good	40.425 \| good	0.353 \| good	9.453 \| good	0.407 \| good
2026-07-22T00:00:00.000Z	51 \| moderate	5.709 \| good	54.765 \| good	34.797 \| good	0.371 \| good	7.425 \| good	0.391 \| good
2026-07-22T01:00:00.000Z	39 \| good	5.622 \| good	23.666 \| good	41.944 \| good	0.376 \| good	8.211 \| good	0.44 \| good
2026-07-22T02:00:00.000Z	37 \| good	5.278 \| good	24.514 \| good	39.856 \| good	0.368 \| good	5.999 \| good	0.356 \| good
2026-07-22T03:00:00.000Z	33 \| good	5.496 \| good	20.324 \| good	35.669 \| good	0.4 \| good	9.629 \| good	0.356 \| good
2026-07-22T04:00:00.000Z	33 \| good	6.444 \| good	25.299 \| good	31.97 \| good	0.367 \| good	11.89 \| good	0.356 \| good
2026-07-22T05:00:00.000Z	38 \| good	6.735 \| good	31.039 \| good	35.281 \| good	0.384 \| good	10.276 \| good	0.34 \| good
2026-07-22T06:00:00.000Z	30 \| good	4.913 \| good	16.225 \| good	31.863 \| good	0.465 \| good	5.33 \| good	0.323 \| good
2026-07-22T07:00:00.000Z	28 \| good	4.589 \| good	22.1 \| good	30.1 \| good	0.465 \| good	4.532 \| good	0.323 \| good
2026-07-22T08:00:00.000Z	27 \| good	4.608 \| good	19.692 \| good	26.111 \| good	0.351 \| good	5.324 \| good	0.269 \| good
2026-07-22T09:00:00.000Z	27 \| good	4.145 \| good	18.167 \| good	29.474 \| good	0.359 \| good	7.161 \| good	0.291 \| good
2026-07-22T10:00:00.000Z	27 \| good	4.346 \| good	17.945 \| good	29.103 \| good	0.476 \| good	10.948 \| good	0.291 \| good
2026-07-22T11:00:00.000Z	25 \| good	4.442 \| good	15.58 \| good	26.828 \| good	0.476 \| good	8.051 \| good	0.34 \| good
2026-07-22T12:00:00.000Z	27 \| good	4.565 \| good	19.299 \| good	23.76 \| good	0.553 \| good	8.023 \| good	0.418 \| good
2026-07-22T13:00:00.000Z	27 \| good	4.9 \| good	22.085 \| good	23.359 \| good	0.519 \| good	13.714 \| good	0.418 \| good
2026-07-22T14:00:00.000Z	23 \| good	3.532 \| good	14.105 \| good	24.534 \| good	0.511 \| good	8.922 \| good	0.384 \| good
2026-07-22T15:00:00.000Z	33 \| good	5.951 \| good	21.259 \| good	27.515 \| good	0.519 \| good	8.846 \| good	0.385 \| good
2026-07-22T16:00:00.000Z	38 \| good	7.336 \| good	36.557 \| good	36.046 \| good	0.298 \| good	8.128 \| good	0.385 \| good
2026-07-22T17:00:00.000Z	44 \| good	8.11 \| good	36.65 \| good	39.085 \| good	0.281 \| good	7.467 \| good	0.385 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	9.783 \| good	46.503 \| good	43.422 \| good	0.403 \| good	6.793 \| good	0.361 \| good
2026-07-22T19:00:00.000Z	49 \| good	9.387 \| good	39.575 \| good	46.332 \| good	0.404 \| good	7.028 \| good	0.361 \| good
2026-07-22T20:00:00.000Z	49 \| good	9.363 \| good	39.685 \| good	49.488 \| good	0.383 \| good	6.948 \| good	0.361 \| good
2026-07-22T21:00:00.000Z	49 \| good	9.336 \| good	31.249 \| good	50.061 \| good	0.374 \| good	8.53 \| good	0.361 \| good
2026-07-22T22:00:00.000Z	49 \| good	8.819 \| good	30.139 \| good	48.623 \| good	0.354 \| good	7.022 \| good	0.323 \| good
2026-07-22T23:00:00.000Z	44 \| good	8.292 \| good	27.456 \| good	48.45 \| good	0.558 \| good	6.074 \| good	0.345 \| good
2026-07-23T00:00:00.000Z	44 \| good	7.59 \| good	35.146 \| good	46.678 \| good	0.438 \| good	5.748 \| good	0.329 \| good
2026-07-23T01:00:00.000Z	44 \| good	8.008 \| good	37.713 \| good	40.698 \| good	0.352 \| good	6.394 \| good	0.329 \| good
2026-07-23T02:00:00.000Z	44 \| good	8.208 \| good	31.505 \| good	42.743 \| good	0.343 \| good	10.796 \| good	0.307 \| good
2026-07-23T03:00:00.000Z	23 \| good	0.52 \| good	1.893 \| good	24.535 \| good	0.72 \| good	5.811 \| good	0.198 \| good
2026-07-23T04:00:00.000Z	38 \| good	6.559 \| good	31.847 \| good	38.398 \| good	0.382 \| good	8.54 \| good	0.252 \| good
2026-07-23T05:00:00.000Z	31 \| good	5.302 \| good	23.375 \| good	34.477 \| good	0.381 \| good	8.384 \| good	0.252 \| good
2026-07-23T06:00:00.000Z	29 \| good	4.457 \| good	19.622 \| good	31.117 \| good	0.388 \| good	4.249 \| good	0.236 \| good
2026-07-23T07:00:00.000Z	29 \| good	4.402 \| good	16.07 \| good	30.693 \| good	0.411 \| good	3.663 \| good	0.236 \| good
2026-07-23T08:00:00.000Z	25 \| good	3.703 \| good	16.34 \| good	27.029 \| good	0.277 \| good	4.207 \| good	0.236 \| good
2026-07-23T09:00:00.000Z	26 \| good	2.872 \| good	11.813 \| good	28.029 \| good	0.45 \| good	6.46 \| good	0.236 \| good
2026-07-23T10:00:00.000Z	26 \| good	2.562 \| good	6.204 \| good	27.621 \| good	0.451 \| good	8.789 \| good	0.242 \| good
2026-07-23T11:00:00.000Z	24 \| good	3.282 \| good	14.717 \| good	26.194 \| good	0.503 \| good	10.893 \| good	0.291 \| good
2026-07-23T12:00:00.000Z	21 \| good	3.262 \| good	14.784 \| good	23.021 \| good	0.413 \| good	13.198 \| good	0.335 \| good
2026-07-23T13:00:00.000Z	24 \| good	4.119 \| good	16.638 \| good	26.253 \| good	0.531 \| good	11.971 \| good	0.302 \| good
2026-07-23T14:00:00.000Z	28 \| good	3.211 \| good	12.71 \| good	29.591 \| good	0.506 \| good	9.766 \| good	0.264 \| good
2026-07-23T15:00:00.000Z	31 \| good	3.393 \| good	12.753 \| good	33.077 \| good	0.417 \| good	8.241 \| good	0.258 \| good
2026-07-23T16:00:00.000Z	30 \| good	3.221 \| good	13.992 \| good	32.442 \| good	0.19 \| good	7.35 \| good	0.258 \| good
2026-07-23T17:00:00.000Z	35 \| good	3.256 \| good	16.252 \| good	37.797 \| good	0.203 \| good	5.991 \| good	0.22 \| good
2026-07-23T18:00:00.000Z	39 \| good	3.495 \| good	15.509 \| good	42.213 \| good	0.339 \| good	4.895 \| good	0.242 \| good
2026-07-23T19:00:00.000Z	42 \| good	3.208 \| good	15.013 \| good	44.705 \| good	0.351 \| good	3.99 \| good	0.248 \| good
2026-07-23T20:00:00.000Z	44 \| good	3.782 \| good	13.903 \| good	48.31 \| good	0.199 \| good	2.735 \| good	0.248 \| good
2026-07-23T21:00:00.000Z	48 \| good	4.232 \| good	20.671 \| good	52.308 \| good	0.207 \| good	4.036 \| good	0.248 \| good
2026-07-23T22:00:00.000Z	48 \| good	4.232 \| good	20.671 \| good	52.308 \| good	0.207 \| good	4.036 \| good	0.248 \| good
2026-07-23T23:00:00.000Z	45 \| good	6.276 \| good	27.777 \| good	48.812 \| good	0.577 \| good	1.722 \| good	0.143 \| good
2026-07-24T00:00:00.000Z	35 \| good	4.12 \| good	17.682 \| good	38.409 \| good	0.59 \| good	3.855 \| good	0.159 \| good
2026-07-24T01:00:00.000Z	33 \| good	6.212 \| good	27.812 \| good	29.431 \| good	0.6 \| good	6.322 \| good	0.176 \| good
2026-07-24T02:00:00.000Z	49 \| good	8.58 \| good	37.765 \| good	24.925 \| good	0.606 \| good	7.493 \| good	0.184 \| good
2026-07-24T03:00:00.000Z	49 \| good	9.089 \| good	40.247 \| good	25.239 \| good	0.615 \| good	9.001 \| good	0.192 \| good
2026-07-24T04:00:00.000Z	52 \| moderate	10.26 \| good	45.755 \| good	24.35 \| good	0.618 \| good	10.772 \| good	0.202 \| good
2026-07-24T05:00:00.000Z	49 \| good	8.721 \| good	38.337 \| good	21.051 \| good	0.596 \| good	11.781 \| good	0.209 \| good
2026-07-24T06:00:00.000Z	49 \| good	8.565 \| good	37.684 \| good	18.942 \| good	0.56 \| good	12.383 \| good	0.21 \| good
2026-07-24T07:00:00.000Z	49 \| good	8.649 \| good	37.97 \| good	16.712 \| good	0.53 \| good	12.83 \| good	0.209 \| good
2026-07-24T08:00:00.000Z	44 \| good	7.954 \| good	34.847 \| good	16.036 \| good	0.511 \| good	13.275 \| good	0.208 \| good
2026-07-24T09:00:00.000Z	44 \| good	8.491 \| good	37.209 \| good	16.648 \| good	0.5 \| good	13.838 \| good	0.209 \| good
2026-07-24T10:00:00.000Z	44 \| good	8.29 \| good	36.551 \| good	16.034 \| good	0.486 \| good	14.865 \| good	0.215 \| good
2026-07-24T11:00:00.000Z	38 \| good	7.126 \| good	31.426 \| good	20.842 \| good	0.456 \| good	13.572 \| good	0.222 \| good
2026-07-24T12:00:00.000Z	27 \| good	5.312 \| good	22.915 \| good	26.999 \| good	0.534 \| good	10.109 \| good	0.207 \| good
2026-07-24T13:00:00.000Z	44 \| good	7.673 \| good	33.805 \| good	29.533 \| good	0.783 \| good	5.605 \| good	0.17 \| good
2026-07-24T14:00:00.000Z	38 \| good	6.673 \| good	29.772 \| good	32.541 \| good	0.84 \| good	2.891 \| good	0.152 \| good
2026-07-24T15:00:00.000Z	44 \| good	8.156 \| good	35.788 \| good	40.167 \| good	0.772 \| good	1.583 \| good	0.147 \| good
2026-07-24T16:00:00.000Z	44 \| good	5.777 \| good	25.381 \| good	47.947 \| good	0.708 \| good	1.132 \| good	0.147 \| good
2026-07-24T17:00:00.000Z	47 \| good	4.834 \| good	20.965 \| good	50.562 \| good	0.68 \| good	1.003 \| good	0.148 \| good
2026-07-24T18:00:00.000Z	48 \| good	5.724 \| good	25.175 \| good	52.473 \| good	0.664 \| good	0.993 \| good	0.149 \| good
2026-07-24T19:00:00.000Z	49 \| good	3.925 \| good	17.194 \| good	53.19 \| good	0.651 \| good	1.029 \| good	0.151 \| good
2026-07-24T20:00:00.000Z	48 \| good	4.679 \| good	20.389 \| good	51.653 \| good	0.639 \| good	1.095 \| good	0.152 \| good
2026-07-24T21:00:00.000Z	44 \| good	4.962 \| good	21.465 \| good	47.135 \| good	0.619 \| good	1.21 \| good	0.153 \| good
2026-07-24T22:00:00.000Z	38 \| good	4.962 \| good	21.364 \| good	41.159 \| good	0.591 \| good	1.502 \| good	0.154 \| good
2026-07-24T23:00:00.000Z	33 \| good	5.75 \| good	24.896 \| good	36.291 \| good	0.561 \| good	2.132 \| good	0.156 \| good
2026-07-25T00:00:00.000Z	44 \| good	7.678 \| good	33.782 \| good	32.038 \| good	0.513 \| good	3.145 \| good	0.158 \| good
2026-07-25T01:00:00.000Z	44 \| good	8.265 \| good	36.452 \| good	24.465 \| good	0.451 \| good	3.409 \| good	0.152 \| good
2026-07-25T02:00:00.000Z	44 \| good	8.205 \| good	36.088 \| good	20.961 \| good	0.396 \| good	3.776 \| good	0.145 \| good
2026-07-25T03:00:00.000Z	33 \| good	6.217 \| good	27.509 \| good	19.662 \| good	0.393 \| good	4.168 \| good	0.141 \| good
2026-07-25T04:00:00.000Z	33 \| good	5.523 \| good	23.679 \| good	17.455 \| good	0.397 \| good	5.409 \| good	0.145 \| good
2026-07-25T05:00:00.000Z	22 \| good	3.951 \| good	17.412 \| good	16.076 \| good	0.368 \| good	6.504 \| good	0.149 \| good
2026-07-25T06:00:00.000Z	16 \| good	2.957 \| good	12.449 \| good	14.456 \| good	0.375 \| good	8.04 \| good	0.156 \| good
2026-07-25T07:00:00.000Z	16 \| good	2.542 \| good	9.936 \| good	14.536 \| good	0.429 \| good	9.791 \| good	0.164 \| good
2026-07-25T08:00:00.000Z	15 \| good	1.82 \| good	7.498 \| good	15.71 \| good	0.514 \| good	10.764 \| good	0.17 \| good
2026-07-25T09:00:00.000Z	11 \| good	1.087 \| good	4.342 \| good	11.877 \| good	0.615 \| good	11.848 \| good	0.176 \| good
2026-07-25T10:00:00.000Z	13 \| good	1.074 \| good	4.273 \| good	13.599 \| good	0.715 \| good	12.77 \| good	0.183 \| good
2026-07-25T11:00:00.000Z	15 \| good	1.26 \| good	4.985 \| good	15.539 \| good	0.815 \| good	12.356 \| good	0.19 \| good
2026-07-25T12:00:00.000Z	18 \| good	1.103 \| good	4.434 \| good	19.082 \| good	0.832 \| good	8.611 \| good	0.176 \| good
2026-07-25T13:00:00.000Z	20 \| good	1.131 \| good	4.784 \| good	22.4 \| good	0.912 \| good	4.449 \| good	0.148 \| good
2026-07-25T14:00:00.000Z	27 \| good	1.959 \| good	7.911 \| good	28.777 \| good	0.838 \| good	2.498 \| good	0.14 \| good
2026-07-25T15:00:00.000Z	34 \| good	3.663 \| good	15.919 \| good	36.91 \| good	0.681 \| good	1.478 \| good	0.141 \| good
2026-07-25T16:00:00.000Z	42 \| good	4.644 \| good	19.957 \| good	45.216 \| good	0.532 \| good	1.005 \| good	0.143 \| good
2026-07-25T17:00:00.000Z	47 \| good	5.524 \| good	24.011 \| good	50.883 \| good	0.452 \| good	0.832 \| good	0.143 \| good
2026-07-25T18:00:00.000Z	51 \| moderate	6.872 \| good	30.561 \| good	54.572 \| good	0.403 \| good	0.763 \| good	0.142 \| good
2026-07-25T19:00:00.000Z	58 \| moderate	6.596 \| good	29.185 \| good	57.41 \| fine	0.375 \| good	0.752 \| good	0.141 \| good
2026-07-25T20:00:00.000Z	67 \| moderate	5.468 \| good	23.834 \| good	59.913 \| fine	0.358 \| good	0.765 \| good	0.14 \| good
2026-07-25T21:00:00.000Z	64 \| moderate	4.046 \| good	17.556 \| good	58.642 \| fine	0.351 \| good	0.826 \| good	0.14 \| good
2026-07-25T22:00:00.000Z	48 \| good	3.761 \| good	16.46 \| good	52.302 \| good	0.351 \| good	1.01 \| good	0.14 \| good

Willistown

Get reliable air quality data to drive your business

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

0.23ppm

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

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

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 10:00:00 on 2026-07-22.

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 12:00:00 on 2026-07-23.

What is the AQI in Willistown, Pennsylvania right now?

As of now, the AQI in Willistown, Pennsylvania is 48, 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 4.232 μg/m³.

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

The PM₁₀ concentration in Willistown, Pennsylvania is 20.671 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 0.248 ppm.

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

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO₂) concentration of 0.207 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 52.308 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 4.036 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T23:00:00.000Z	38 \| good	7.432 \| good	38.039 \| good	40.425 \| good	0.353 \| good	9.453 \| good	0.407 \| good
2026-07-22T00:00:00.000Z	51 \| moderate	5.709 \| good	54.765 \| good	34.797 \| good	0.371 \| good	7.425 \| good	0.391 \| good
2026-07-22T01:00:00.000Z	39 \| good	5.622 \| good	23.666 \| good	41.944 \| good	0.376 \| good	8.211 \| good	0.44 \| good
2026-07-22T02:00:00.000Z	37 \| good	5.278 \| good	24.514 \| good	39.856 \| good	0.368 \| good	5.999 \| good	0.356 \| good
2026-07-22T03:00:00.000Z	33 \| good	5.496 \| good	20.324 \| good	35.669 \| good	0.4 \| good	9.629 \| good	0.356 \| good
2026-07-22T04:00:00.000Z	33 \| good	6.444 \| good	25.299 \| good	31.97 \| good	0.367 \| good	11.89 \| good	0.356 \| good
2026-07-22T05:00:00.000Z	38 \| good	6.735 \| good	31.039 \| good	35.281 \| good	0.384 \| good	10.276 \| good	0.34 \| good
2026-07-22T06:00:00.000Z	30 \| good	4.913 \| good	16.225 \| good	31.863 \| good	0.465 \| good	5.33 \| good	0.323 \| good
2026-07-22T07:00:00.000Z	28 \| good	4.589 \| good	22.1 \| good	30.1 \| good	0.465 \| good	4.532 \| good	0.323 \| good
2026-07-22T08:00:00.000Z	27 \| good	4.608 \| good	19.692 \| good	26.111 \| good	0.351 \| good	5.324 \| good	0.269 \| good
2026-07-22T09:00:00.000Z	27 \| good	4.145 \| good	18.167 \| good	29.474 \| good	0.359 \| good	7.161 \| good	0.291 \| good
2026-07-22T10:00:00.000Z	27 \| good	4.346 \| good	17.945 \| good	29.103 \| good	0.476 \| good	10.948 \| good	0.291 \| good
2026-07-22T11:00:00.000Z	25 \| good	4.442 \| good	15.58 \| good	26.828 \| good	0.476 \| good	8.051 \| good	0.34 \| good
2026-07-22T12:00:00.000Z	27 \| good	4.565 \| good	19.299 \| good	23.76 \| good	0.553 \| good	8.023 \| good	0.418 \| good
2026-07-22T13:00:00.000Z	27 \| good	4.9 \| good	22.085 \| good	23.359 \| good	0.519 \| good	13.714 \| good	0.418 \| good
2026-07-22T14:00:00.000Z	23 \| good	3.532 \| good	14.105 \| good	24.534 \| good	0.511 \| good	8.922 \| good	0.384 \| good
2026-07-22T15:00:00.000Z	33 \| good	5.951 \| good	21.259 \| good	27.515 \| good	0.519 \| good	8.846 \| good	0.385 \| good
2026-07-22T16:00:00.000Z	38 \| good	7.336 \| good	36.557 \| good	36.046 \| good	0.298 \| good	8.128 \| good	0.385 \| good
2026-07-22T17:00:00.000Z	44 \| good	8.11 \| good	36.65 \| good	39.085 \| good	0.281 \| good	7.467 \| good	0.385 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	9.783 \| good	46.503 \| good	43.422 \| good	0.403 \| good	6.793 \| good	0.361 \| good
2026-07-22T19:00:00.000Z	49 \| good	9.387 \| good	39.575 \| good	46.332 \| good	0.404 \| good	7.028 \| good	0.361 \| good
2026-07-22T20:00:00.000Z	49 \| good	9.363 \| good	39.685 \| good	49.488 \| good	0.383 \| good	6.948 \| good	0.361 \| good
2026-07-22T21:00:00.000Z	49 \| good	9.336 \| good	31.249 \| good	50.061 \| good	0.374 \| good	8.53 \| good	0.361 \| good
2026-07-22T22:00:00.000Z	49 \| good	8.819 \| good	30.139 \| good	48.623 \| good	0.354 \| good	7.022 \| good	0.323 \| good
2026-07-22T23:00:00.000Z	44 \| good	8.292 \| good	27.456 \| good	48.45 \| good	0.558 \| good	6.074 \| good	0.345 \| good
2026-07-23T00:00:00.000Z	44 \| good	7.59 \| good	35.146 \| good	46.678 \| good	0.438 \| good	5.748 \| good	0.329 \| good
2026-07-23T01:00:00.000Z	44 \| good	8.008 \| good	37.713 \| good	40.698 \| good	0.352 \| good	6.394 \| good	0.329 \| good
2026-07-23T02:00:00.000Z	44 \| good	8.208 \| good	31.505 \| good	42.743 \| good	0.343 \| good	10.796 \| good	0.307 \| good
2026-07-23T03:00:00.000Z	23 \| good	0.52 \| good	1.893 \| good	24.535 \| good	0.72 \| good	5.811 \| good	0.198 \| good
2026-07-23T04:00:00.000Z	38 \| good	6.559 \| good	31.847 \| good	38.398 \| good	0.382 \| good	8.54 \| good	0.252 \| good
2026-07-23T05:00:00.000Z	31 \| good	5.302 \| good	23.375 \| good	34.477 \| good	0.381 \| good	8.384 \| good	0.252 \| good
2026-07-23T06:00:00.000Z	29 \| good	4.457 \| good	19.622 \| good	31.117 \| good	0.388 \| good	4.249 \| good	0.236 \| good
2026-07-23T07:00:00.000Z	29 \| good	4.402 \| good	16.07 \| good	30.693 \| good	0.411 \| good	3.663 \| good	0.236 \| good
2026-07-23T08:00:00.000Z	25 \| good	3.703 \| good	16.34 \| good	27.029 \| good	0.277 \| good	4.207 \| good	0.236 \| good
2026-07-23T09:00:00.000Z	26 \| good	2.872 \| good	11.813 \| good	28.029 \| good	0.45 \| good	6.46 \| good	0.236 \| good
2026-07-23T10:00:00.000Z	26 \| good	2.562 \| good	6.204 \| good	27.621 \| good	0.451 \| good	8.789 \| good	0.242 \| good
2026-07-23T11:00:00.000Z	24 \| good	3.282 \| good	14.717 \| good	26.194 \| good	0.503 \| good	10.893 \| good	0.291 \| good
2026-07-23T12:00:00.000Z	21 \| good	3.262 \| good	14.784 \| good	23.021 \| good	0.413 \| good	13.198 \| good	0.335 \| good
2026-07-23T13:00:00.000Z	24 \| good	4.119 \| good	16.638 \| good	26.253 \| good	0.531 \| good	11.971 \| good	0.302 \| good
2026-07-23T14:00:00.000Z	28 \| good	3.211 \| good	12.71 \| good	29.591 \| good	0.506 \| good	9.766 \| good	0.264 \| good
2026-07-23T15:00:00.000Z	31 \| good	3.393 \| good	12.753 \| good	33.077 \| good	0.417 \| good	8.241 \| good	0.258 \| good
2026-07-23T16:00:00.000Z	30 \| good	3.221 \| good	13.992 \| good	32.442 \| good	0.19 \| good	7.35 \| good	0.258 \| good
2026-07-23T17:00:00.000Z	35 \| good	3.256 \| good	16.252 \| good	37.797 \| good	0.203 \| good	5.991 \| good	0.22 \| good
2026-07-23T18:00:00.000Z	39 \| good	3.495 \| good	15.509 \| good	42.213 \| good	0.339 \| good	4.895 \| good	0.242 \| good
2026-07-23T19:00:00.000Z	42 \| good	3.208 \| good	15.013 \| good	44.705 \| good	0.351 \| good	3.99 \| good	0.248 \| good
2026-07-23T20:00:00.000Z	44 \| good	3.782 \| good	13.903 \| good	48.31 \| good	0.199 \| good	2.735 \| good	0.248 \| good
2026-07-23T21:00:00.000Z	48 \| good	4.232 \| good	20.671 \| good	52.308 \| good	0.207 \| good	4.036 \| good	0.248 \| good
2026-07-23T22:00:00.000Z	48 \| good	4.232 \| good	20.671 \| good	52.308 \| good	0.207 \| good	4.036 \| good	0.248 \| good
2026-07-23T23:00:00.000Z	45 \| good	6.276 \| good	27.777 \| good	48.812 \| good	0.577 \| good	1.722 \| good	0.143 \| good
2026-07-24T00:00:00.000Z	35 \| good	4.12 \| good	17.682 \| good	38.409 \| good	0.59 \| good	3.855 \| good	0.159 \| good
2026-07-24T01:00:00.000Z	33 \| good	6.212 \| good	27.812 \| good	29.431 \| good	0.6 \| good	6.322 \| good	0.176 \| good
2026-07-24T02:00:00.000Z	49 \| good	8.58 \| good	37.765 \| good	24.925 \| good	0.606 \| good	7.493 \| good	0.184 \| good
2026-07-24T03:00:00.000Z	49 \| good	9.089 \| good	40.247 \| good	25.239 \| good	0.615 \| good	9.001 \| good	0.192 \| good
2026-07-24T04:00:00.000Z	52 \| moderate	10.26 \| good	45.755 \| good	24.35 \| good	0.618 \| good	10.772 \| good	0.202 \| good
2026-07-24T05:00:00.000Z	49 \| good	8.721 \| good	38.337 \| good	21.051 \| good	0.596 \| good	11.781 \| good	0.209 \| good
2026-07-24T06:00:00.000Z	49 \| good	8.565 \| good	37.684 \| good	18.942 \| good	0.56 \| good	12.383 \| good	0.21 \| good
2026-07-24T07:00:00.000Z	49 \| good	8.649 \| good	37.97 \| good	16.712 \| good	0.53 \| good	12.83 \| good	0.209 \| good
2026-07-24T08:00:00.000Z	44 \| good	7.954 \| good	34.847 \| good	16.036 \| good	0.511 \| good	13.275 \| good	0.208 \| good
2026-07-24T09:00:00.000Z	44 \| good	8.491 \| good	37.209 \| good	16.648 \| good	0.5 \| good	13.838 \| good	0.209 \| good
2026-07-24T10:00:00.000Z	44 \| good	8.29 \| good	36.551 \| good	16.034 \| good	0.486 \| good	14.865 \| good	0.215 \| good
2026-07-24T11:00:00.000Z	38 \| good	7.126 \| good	31.426 \| good	20.842 \| good	0.456 \| good	13.572 \| good	0.222 \| good
2026-07-24T12:00:00.000Z	27 \| good	5.312 \| good	22.915 \| good	26.999 \| good	0.534 \| good	10.109 \| good	0.207 \| good
2026-07-24T13:00:00.000Z	44 \| good	7.673 \| good	33.805 \| good	29.533 \| good	0.783 \| good	5.605 \| good	0.17 \| good
2026-07-24T14:00:00.000Z	38 \| good	6.673 \| good	29.772 \| good	32.541 \| good	0.84 \| good	2.891 \| good	0.152 \| good
2026-07-24T15:00:00.000Z	44 \| good	8.156 \| good	35.788 \| good	40.167 \| good	0.772 \| good	1.583 \| good	0.147 \| good
2026-07-24T16:00:00.000Z	44 \| good	5.777 \| good	25.381 \| good	47.947 \| good	0.708 \| good	1.132 \| good	0.147 \| good
2026-07-24T17:00:00.000Z	47 \| good	4.834 \| good	20.965 \| good	50.562 \| good	0.68 \| good	1.003 \| good	0.148 \| good
2026-07-24T18:00:00.000Z	48 \| good	5.724 \| good	25.175 \| good	52.473 \| good	0.664 \| good	0.993 \| good	0.149 \| good
2026-07-24T19:00:00.000Z	49 \| good	3.925 \| good	17.194 \| good	53.19 \| good	0.651 \| good	1.029 \| good	0.151 \| good
2026-07-24T20:00:00.000Z	48 \| good	4.679 \| good	20.389 \| good	51.653 \| good	0.639 \| good	1.095 \| good	0.152 \| good
2026-07-24T21:00:00.000Z	44 \| good	4.962 \| good	21.465 \| good	47.135 \| good	0.619 \| good	1.21 \| good	0.153 \| good
2026-07-24T22:00:00.000Z	38 \| good	4.962 \| good	21.364 \| good	41.159 \| good	0.591 \| good	1.502 \| good	0.154 \| good
2026-07-24T23:00:00.000Z	33 \| good	5.75 \| good	24.896 \| good	36.291 \| good	0.561 \| good	2.132 \| good	0.156 \| good
2026-07-25T00:00:00.000Z	44 \| good	7.678 \| good	33.782 \| good	32.038 \| good	0.513 \| good	3.145 \| good	0.158 \| good
2026-07-25T01:00:00.000Z	44 \| good	8.265 \| good	36.452 \| good	24.465 \| good	0.451 \| good	3.409 \| good	0.152 \| good
2026-07-25T02:00:00.000Z	44 \| good	8.205 \| good	36.088 \| good	20.961 \| good	0.396 \| good	3.776 \| good	0.145 \| good
2026-07-25T03:00:00.000Z	33 \| good	6.217 \| good	27.509 \| good	19.662 \| good	0.393 \| good	4.168 \| good	0.141 \| good
2026-07-25T04:00:00.000Z	33 \| good	5.523 \| good	23.679 \| good	17.455 \| good	0.397 \| good	5.409 \| good	0.145 \| good
2026-07-25T05:00:00.000Z	22 \| good	3.951 \| good	17.412 \| good	16.076 \| good	0.368 \| good	6.504 \| good	0.149 \| good
2026-07-25T06:00:00.000Z	16 \| good	2.957 \| good	12.449 \| good	14.456 \| good	0.375 \| good	8.04 \| good	0.156 \| good
2026-07-25T07:00:00.000Z	16 \| good	2.542 \| good	9.936 \| good	14.536 \| good	0.429 \| good	9.791 \| good	0.164 \| good
2026-07-25T08:00:00.000Z	15 \| good	1.82 \| good	7.498 \| good	15.71 \| good	0.514 \| good	10.764 \| good	0.17 \| good
2026-07-25T09:00:00.000Z	11 \| good	1.087 \| good	4.342 \| good	11.877 \| good	0.615 \| good	11.848 \| good	0.176 \| good
2026-07-25T10:00:00.000Z	13 \| good	1.074 \| good	4.273 \| good	13.599 \| good	0.715 \| good	12.77 \| good	0.183 \| good
2026-07-25T11:00:00.000Z	15 \| good	1.26 \| good	4.985 \| good	15.539 \| good	0.815 \| good	12.356 \| good	0.19 \| good
2026-07-25T12:00:00.000Z	18 \| good	1.103 \| good	4.434 \| good	19.082 \| good	0.832 \| good	8.611 \| good	0.176 \| good
2026-07-25T13:00:00.000Z	20 \| good	1.131 \| good	4.784 \| good	22.4 \| good	0.912 \| good	4.449 \| good	0.148 \| good
2026-07-25T14:00:00.000Z	27 \| good	1.959 \| good	7.911 \| good	28.777 \| good	0.838 \| good	2.498 \| good	0.14 \| good
2026-07-25T15:00:00.000Z	34 \| good	3.663 \| good	15.919 \| good	36.91 \| good	0.681 \| good	1.478 \| good	0.141 \| good
2026-07-25T16:00:00.000Z	42 \| good	4.644 \| good	19.957 \| good	45.216 \| good	0.532 \| good	1.005 \| good	0.143 \| good
2026-07-25T17:00:00.000Z	47 \| good	5.524 \| good	24.011 \| good	50.883 \| good	0.452 \| good	0.832 \| good	0.143 \| good
2026-07-25T18:00:00.000Z	51 \| moderate	6.872 \| good	30.561 \| good	54.572 \| good	0.403 \| good	0.763 \| good	0.142 \| good
2026-07-25T19:00:00.000Z	58 \| moderate	6.596 \| good	29.185 \| good	57.41 \| fine	0.375 \| good	0.752 \| good	0.141 \| good
2026-07-25T20:00:00.000Z	67 \| moderate	5.468 \| good	23.834 \| good	59.913 \| fine	0.358 \| good	0.765 \| good	0.14 \| good
2026-07-25T21:00:00.000Z	64 \| moderate	4.046 \| good	17.556 \| good	58.642 \| fine	0.351 \| good	0.826 \| good	0.14 \| good
2026-07-25T22:00:00.000Z	48 \| good	3.761 \| good	16.46 \| good	52.302 \| good	0.351 \| good	1.01 \| good	0.14 \| 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)

Track live Willistown, Pennsylvania air quality forecast and history

Get reliable air quality data to drive your business

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

How accurate is Pennsylvania, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

What is the AQI in Willistown, Pennsylvania right now?

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

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

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?