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

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.309 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 36.643 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 8.465 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 2.606 μg/m3.

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

The PM10 concentration in Willistown, Pennsylvania is 10.29 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)

2.61 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

10.29 μg/m³

155

255

425

605+

Ozone (O₃)

36.64 ppb

201

201+

Sulfur Dioxide (SO₂)

0.31 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.46 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.29 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

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
2026-10-20T22:00:00.000Z	36 \| good	3.353 \| good	14.679 \| good	38.611 \| good	0.278 \| good	8.882 \| good	0.352 \| good
2026-10-20T23:00:00.000Z	32 \| good	3.439 \| good	15.697 \| good	34.595 \| good	0.312 \| good	10.996 \| good	0.298 \| good
2026-10-21T00:00:00.000Z	33 \| good	4.569 \| good	17.211 \| good	36.09 \| good	0.254 \| good	15.386 \| good	0.36 \| good
2026-10-21T01:00:00.000Z	30 \| good	5.118 \| good	22.51 \| good	31.584 \| good	0.421 \| good	17.858 \| good	0.402 \| good
2026-10-21T02:00:00.000Z	27 \| good	4.641 \| good	16.28 \| good	29.264 \| good	0.427 \| good	18.753 \| good	0.396 \| good
2026-10-21T03:00:00.000Z	33 \| good	5.619 \| good	24.29 \| good	20.473 \| good	0.528 \| good	8.401 \| good	0.182 \| good
2026-10-21T04:00:00.000Z	22 \| good	4.03 \| good	16.863 \| good	22.194 \| good	0.302 \| good	12.97 \| good	0.302 \| good
2026-10-21T05:00:00.000Z	22 \| good	3.804 \| good	23.242 \| good	21.756 \| good	0.163 \| good	12.36 \| good	0.252 \| good
2026-10-21T06:00:00.000Z	22 \| good	3.709 \| good	14.586 \| good	19.735 \| good	0.182 \| good	8.991 \| good	0.236 \| good
2026-10-21T07:00:00.000Z	22 \| good	2.568 \| good	11.641 \| good	23.663 \| good	0.317 \| good	6.33 \| good	0.236 \| good
2026-10-21T08:00:00.000Z	26 \| good	2.456 \| good	10.703 \| good	27.933 \| good	0.152 \| good	6.644 \| good	0.174 \| good
2026-10-21T09:00:00.000Z	25 \| good	2.918 \| good	23.689 \| good	27.34 \| good	0.145 \| good	6.861 \| good	0.236 \| good
2026-10-21T10:00:00.000Z	25 \| good	2.555 \| good	11.737 \| good	27.216 \| good	0.236 \| good	8.767 \| good	0.236 \| good
2026-10-21T11:00:00.000Z	24 \| good	2.484 \| good	11.501 \| good	26.235 \| good	0.244 \| good	8.332 \| good	0.269 \| good
2026-10-21T12:00:00.000Z	25 \| good	2.421 \| good	10.503 \| good	26.824 \| good	0.116 \| good	11.531 \| good	0.276 \| good
2026-10-21T13:00:00.000Z	21 \| good	2.615 \| good	17.005 \| good	22.749 \| good	0.173 \| good	11.458 \| good	0.298 \| good
2026-10-21T14:00:00.000Z	22 \| good	2.882 \| good	12.798 \| good	23.931 \| good	0.31 \| good	11.851 \| good	0.281 \| good
2026-10-21T15:00:00.000Z	23 \| good	3.164 \| good	18.791 \| good	24.503 \| good	0.295 \| good	10.513 \| good	0.276 \| good
2026-10-21T16:00:00.000Z	24 \| good	2.672 \| good	9.787 \| good	25.782 \| good	0.291 \| good	8.14 \| good	0.257 \| good
2026-10-21T17:00:00.000Z	28 \| good	2.816 \| good	12.253 \| good	30.426 \| good	0.281 \| good	8.723 \| good	0.22 \| good
2026-10-21T18:00:00.000Z	30 \| good	2.714 \| good	11.161 \| good	32.402 \| good	0.266 \| good	7.912 \| good	0.236 \| good
2026-10-21T19:00:00.000Z	25 \| good	2.67 \| good	11.973 \| good	26.983 \| good	0.194 \| good	7.971 \| good	0.236 \| good
2026-10-21T20:00:00.000Z	28 \| good	2.596 \| good	11.002 \| good	30.165 \| good	0.159 \| good	8.392 \| good	0.236 \| good
2026-10-21T21:00:00.000Z	26 \| good	3.334 \| good	13.441 \| good	27.643 \| good	0.266 \| good	5.039 \| good	0.158 \| good
2026-10-21T22:00:00.000Z	28 \| good	2.821 \| good	15.903 \| good	30.061 \| good	0.221 \| good	10.267 \| good	0.236 \| good
2026-10-21T23:00:00.000Z	26 \| good	3.11 \| good	11.945 \| good	27.829 \| good	0.121 \| good	5.425 \| good	0.18 \| good
2026-10-22T00:00:00.000Z	27 \| good	5.009 \| good	26.048 \| good	22.234 \| good	0.391 \| good	9.921 \| good	0.256 \| good
2026-10-22T01:00:00.000Z	27 \| good	4.682 \| good	24.434 \| good	22.821 \| good	0.444 \| good	11.565 \| good	0.291 \| good
2026-10-22T02:00:00.000Z	22 \| good	3.744 \| good	22.607 \| good	21.638 \| good	0.371 \| good	11.934 \| good	0.299 \| good
2026-10-22T03:00:00.000Z	38 \| good	7.291 \| good	32.067 \| good	13.399 \| good	0.658 \| good	15.241 \| good	0.24 \| good
2026-10-22T04:00:00.000Z	17 \| good	3.432 \| good	17.995 \| good	13.567 \| good	0.25 \| good	13.795 \| good	0.235 \| good
2026-10-22T05:00:00.000Z	27 \| good	5.012 \| good	23.908 \| good	16.127 \| good	0.247 \| good	12.062 \| good	0.21 \| good
2026-10-22T06:00:00.000Z	27 \| good	5.114 \| good	26.379 \| good	18.487 \| good	0.242 \| good	12.108 \| good	0.21 \| good
2026-10-22T07:00:00.000Z	33 \| good	5.677 \| good	27.317 \| good	13.846 \| good	0.239 \| good	6.03 \| good	0.157 \| good
2026-10-22T08:00:00.000Z	27 \| good	5.052 \| good	21.103 \| good	13.46 \| good	0.413 \| good	8.331 \| good	0.195 \| good
2026-10-22T09:00:00.000Z	22 \| good	3.875 \| good	18.508 \| good	13.781 \| good	0.126 \| good	11.039 \| good	0.159 \| good
2026-10-22T10:00:00.000Z	22 \| good	4.388 \| good	20.411 \| good	18.756 \| good	0.63 \| good	14.929 \| good	0.236 \| good
2026-10-22T11:00:00.000Z	22 \| good	3.59 \| good	16.34 \| good	17.208 \| good	1.175 \| good	15.456 \| good	0.236 \| good
2026-10-22T12:00:00.000Z	22 \| good	4.186 \| good	19.125 \| good	17.246 \| good	0.697 \| good	17.622 \| good	0.251 \| good
2026-10-22T13:00:00.000Z	27 \| good	4.87 \| good	23.499 \| good	17.015 \| good	0.716 \| good	17.635 \| good	0.232 \| good
2026-10-22T14:00:00.000Z	22 \| good	3.983 \| good	18.572 \| good	21.995 \| good	0.263 \| good	10.452 \| good	0.258 \| good
2026-10-22T15:00:00.000Z	22 \| good	3.912 \| good	13.182 \| good	22.792 \| good	0.263 \| good	7.13 \| good	0.158 \| good
2026-10-22T16:00:00.000Z	25 \| good	3.103 \| good	12.932 \| good	26.775 \| good	0.305 \| good	10.713 \| good	0.275 \| good
2026-10-22T17:00:00.000Z	31 \| good	3.259 \| good	13.527 \| good	32.716 \| good	0.304 \| good	10.551 \| good	0.275 \| good
2026-10-22T18:00:00.000Z	31 \| good	2.606 \| good	8.655 \| good	34.061 \| good	0.316 \| good	9.743 \| good	0.275 \| good
2026-10-22T19:00:00.000Z	32 \| good	2.564 \| good	10.138 \| good	34.925 \| good	0.322 \| good	8.887 \| good	0.269 \| good
2026-10-22T20:00:00.000Z	31 \| good	2.709 \| good	10.997 \| good	34.323 \| good	0.328 \| good	9.799 \| good	0.275 \| good
2026-10-22T21:00:00.000Z	34 \| good	2.606 \| good	10.29 \| good	36.643 \| good	0.309 \| good	8.465 \| good	0.295 \| good
2026-10-22T21:00:00.000Z	34 \| good	2.606 \| good	10.29 \| good	36.643 \| good	0.309 \| good	8.465 \| good	0.295 \| good
2026-10-22T22:00:00.000Z	25 \| good	3.562 \| good	15.757 \| good	26.619 \| good	0.663 \| good	6.312 \| good	0.204 \| good
2026-10-22T23:00:00.000Z	20 \| good	3.361 \| good	15.049 \| good	21.742 \| good	0.694 \| good	9.008 \| good	0.222 \| good
2026-10-23T00:00:00.000Z	27 \| good	4.645 \| good	20.269 \| good	23.499 \| good	0.749 \| good	8.81 \| good	0.218 \| good
2026-10-23T01:00:00.000Z	27 \| good	5.422 \| good	23.33 \| good	22.582 \| good	0.812 \| good	7.685 \| good	0.209 \| good
2026-10-23T02:00:00.000Z	27 \| good	4.908 \| good	21.336 \| good	22.793 \| good	0.867 \| good	6.629 \| good	0.203 \| good
2026-10-23T03:00:00.000Z	27 \| good	5.147 \| good	22.336 \| good	22.517 \| good	0.896 \| good	5.869 \| good	0.2 \| good
2026-10-23T04:00:00.000Z	33 \| good	6.05 \| good	26.991 \| good	21.275 \| good	0.875 \| good	5.007 \| good	0.196 \| good
2026-10-23T05:00:00.000Z	33 \| good	6.407 \| good	28.588 \| good	22.001 \| good	0.804 \| good	4.192 \| good	0.192 \| good
2026-10-23T06:00:00.000Z	38 \| good	6.843 \| good	30.466 \| good	21.496 \| good	0.713 \| good	3.718 \| good	0.188 \| good
2026-10-23T07:00:00.000Z	33 \| good	6.471 \| good	28.656 \| good	20.517 \| good	0.627 \| good	3.492 \| good	0.185 \| good
2026-10-23T08:00:00.000Z	33 \| good	6.051 \| good	26.733 \| good	19.623 \| good	0.563 \| good	3.451 \| good	0.183 \| good
2026-10-23T09:00:00.000Z	33 \| good	5.736 \| good	25.143 \| good	20.681 \| good	0.53 \| good	3.485 \| good	0.182 \| good
2026-10-23T10:00:00.000Z	27 \| good	5.039 \| good	21.799 \| good	19.276 \| good	0.537 \| good	3.661 \| good	0.182 \| good
2026-10-23T11:00:00.000Z	27 \| good	4.642 \| good	20.182 \| good	17.541 \| good	0.585 \| good	4.486 \| good	0.185 \| good
2026-10-23T12:00:00.000Z	19 \| good	2.921 \| good	11.926 \| good	20.345 \| good	0.654 \| good	5.665 \| good	0.191 \| good
2026-10-23T13:00:00.000Z	22 \| good	1.747 \| good	7.032 \| good	24.142 \| good	0.725 \| good	4.432 \| good	0.183 \| good
2026-10-23T14:00:00.000Z	22 \| good	2.429 \| good	9.787 \| good	24.228 \| good	0.763 \| good	3.476 \| good	0.171 \| good
2026-10-23T15:00:00.000Z	23 \| good	2.623 \| good	10.789 \| good	24.925 \| good	0.787 \| good	3.095 \| good	0.165 \| good
2026-10-23T16:00:00.000Z	24 \| good	2.849 \| good	11.683 \| good	26.495 \| good	0.809 \| good	2.926 \| good	0.162 \| good
2026-10-23T17:00:00.000Z	27 \| good	3.705 \| good	16.31 \| good	28.856 \| good	0.813 \| good	2.843 \| good	0.16 \| good
2026-10-23T18:00:00.000Z	29 \| good	4.199 \| good	18.622 \| good	30.712 \| good	0.793 \| good	2.799 \| good	0.157 \| good
2026-10-23T19:00:00.000Z	28 \| good	4.575 \| good	20.03 \| good	30.26 \| good	0.773 \| good	2.827 \| good	0.154 \| good
2026-10-23T20:00:00.000Z	29 \| good	4.708 \| good	20.838 \| good	31.421 \| good	0.767 \| good	3.096 \| good	0.154 \| good
2026-10-23T21:00:00.000Z	33 \| good	6.325 \| good	28.149 \| good	27.279 \| good	0.776 \| good	3.886 \| good	0.158 \| good
2026-10-23T22:00:00.000Z	52 \| moderate	10.104 \| good	45.165 \| good	15.877 \| good	0.817 \| good	11.118 \| good	0.215 \| good
2026-10-23T23:00:00.000Z	56 \| moderate	12.141 \| fine	54.371 \| good	9.065 \| good	0.958 \| good	21.833 \| good	0.304 \| good
2026-10-24T00:00:00.000Z	60 \| moderate	13.867 \| fine	62.543 \| fine	4.507 \| good	1.107 \| good	27.074 \| good	0.372 \| good
2026-10-24T01:00:00.000Z	62 \| moderate	14.768 \| fine	66.058 \| fine	1.887 \| good	1.247 \| good	28.125 \| good	0.406 \| good
2026-10-24T02:00:00.000Z	60 \| moderate	13.898 \| fine	62.133 \| fine	1.864 \| good	1.368 \| good	28.14 \| good	0.426 \| good
2026-10-24T03:00:00.000Z	56 \| moderate	12.484 \| fine	55.555 \| fine	1.591 \| good	1.432 \| good	27.989 \| good	0.436 \| good
2026-10-24T04:00:00.000Z	56 \| moderate	12.367 \| fine	54.965 \| good	2.822 \| good	1.433 \| good	27.781 \| good	0.442 \| good
2026-10-24T05:00:00.000Z	58 \| moderate	12.764 \| fine	56.755 \| fine	3.546 \| good	1.413 \| good	27.765 \| good	0.446 \| good
2026-10-24T06:00:00.000Z	58 \| moderate	13.441 \| fine	60.91 \| fine	3.091 \| good	1.403 \| good	27.804 \| good	0.453 \| good
2026-10-24T07:00:00.000Z	62 \| moderate	15.223 \| fine	67.792 \| fine	2.967 \| good	1.327 \| good	27.026 \| good	0.465 \| good
2026-10-24T08:00:00.000Z	66 \| moderate	17.358 \| fine	76.909 \| fine	3.211 \| good	1.221 \| good	26.374 \| good	0.457 \| good
2026-10-24T09:00:00.000Z	69 \| moderate	18.765 \| fine	82.547 \| fine	5.324 \| good	1.157 \| good	26.087 \| good	0.433 \| good
2026-10-24T10:00:00.000Z	69 \| moderate	19.039 \| fine	84.213 \| fine	6.285 \| good	1.154 \| good	25.867 \| good	0.411 \| good
2026-10-24T11:00:00.000Z	67 \| moderate	17.8 \| fine	79.023 \| fine	7.136 \| good	1.186 \| good	25.546 \| good	0.4 \| good
2026-10-24T12:00:00.000Z	67 \| moderate	18.001 \| fine	80.151 \| fine	8.724 \| good	1.235 \| good	22.358 \| good	0.409 \| good
2026-10-24T13:00:00.000Z	67 \| moderate	17.744 \| fine	78.778 \| fine	12.982 \| good	1.076 \| good	16.548 \| good	0.401 \| good
2026-10-24T14:00:00.000Z	56 \| moderate	12.05 \| good	53.856 \| good	19.627 \| good	0.822 \| good	13.042 \| good	0.312 \| good
2026-10-24T15:00:00.000Z	49 \| good	9.243 \| good	41.388 \| good	27.009 \| good	1.158 \| good	9.073 \| good	0.23 \| good
2026-10-24T16:00:00.000Z	44 \| good	7.987 \| good	34.837 \| good	31.554 \| good	1.333 \| good	5.66 \| good	0.185 \| good
2026-10-24T17:00:00.000Z	44 \| good	8.297 \| good	36.32 \| good	35.288 \| good	1.247 \| good	4.502 \| good	0.174 \| good
2026-10-24T18:00:00.000Z	49 \| good	8.805 \| good	38.77 \| good	37.214 \| good	1.208 \| good	4.188 \| good	0.17 \| good
2026-10-24T19:00:00.000Z	49 \| good	9.301 \| good	41.324 \| good	35.378 \| good	1.203 \| good	4.182 \| good	0.169 \| good
2026-10-24T20:00:00.000Z	49 \| good	8.842 \| good	39.283 \| good	34.125 \| good	1.211 \| good	4.47 \| good	0.169 \| good
2026-10-24T21:00:00.000Z	49 \| good	9.14 \| good	40.628 \| good	31.265 \| good	1.25 \| good	5.402 \| good	0.172 \| good

Willistown

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

0.24ppm

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 2026-10-22.

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 04:00:00 on 2026-10-22.

What is the AQI in Willistown, Pennsylvania right now?

As of now, the AQI in Willistown, Pennsylvania is 34, 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 2.606 μg/m³.

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

The PM₁₀ concentration in Willistown, Pennsylvania is 10.29 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 0.295 ppm.

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

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO₂) concentration of 0.309 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 36.643 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 8.465 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-20T22:00:00.000Z	36 \| good	3.353 \| good	14.679 \| good	38.611 \| good	0.278 \| good	8.882 \| good	0.352 \| good
2026-10-20T23:00:00.000Z	32 \| good	3.439 \| good	15.697 \| good	34.595 \| good	0.312 \| good	10.996 \| good	0.298 \| good
2026-10-21T00:00:00.000Z	33 \| good	4.569 \| good	17.211 \| good	36.09 \| good	0.254 \| good	15.386 \| good	0.36 \| good
2026-10-21T01:00:00.000Z	30 \| good	5.118 \| good	22.51 \| good	31.584 \| good	0.421 \| good	17.858 \| good	0.402 \| good
2026-10-21T02:00:00.000Z	27 \| good	4.641 \| good	16.28 \| good	29.264 \| good	0.427 \| good	18.753 \| good	0.396 \| good
2026-10-21T03:00:00.000Z	33 \| good	5.619 \| good	24.29 \| good	20.473 \| good	0.528 \| good	8.401 \| good	0.182 \| good
2026-10-21T04:00:00.000Z	22 \| good	4.03 \| good	16.863 \| good	22.194 \| good	0.302 \| good	12.97 \| good	0.302 \| good
2026-10-21T05:00:00.000Z	22 \| good	3.804 \| good	23.242 \| good	21.756 \| good	0.163 \| good	12.36 \| good	0.252 \| good
2026-10-21T06:00:00.000Z	22 \| good	3.709 \| good	14.586 \| good	19.735 \| good	0.182 \| good	8.991 \| good	0.236 \| good
2026-10-21T07:00:00.000Z	22 \| good	2.568 \| good	11.641 \| good	23.663 \| good	0.317 \| good	6.33 \| good	0.236 \| good
2026-10-21T08:00:00.000Z	26 \| good	2.456 \| good	10.703 \| good	27.933 \| good	0.152 \| good	6.644 \| good	0.174 \| good
2026-10-21T09:00:00.000Z	25 \| good	2.918 \| good	23.689 \| good	27.34 \| good	0.145 \| good	6.861 \| good	0.236 \| good
2026-10-21T10:00:00.000Z	25 \| good	2.555 \| good	11.737 \| good	27.216 \| good	0.236 \| good	8.767 \| good	0.236 \| good
2026-10-21T11:00:00.000Z	24 \| good	2.484 \| good	11.501 \| good	26.235 \| good	0.244 \| good	8.332 \| good	0.269 \| good
2026-10-21T12:00:00.000Z	25 \| good	2.421 \| good	10.503 \| good	26.824 \| good	0.116 \| good	11.531 \| good	0.276 \| good
2026-10-21T13:00:00.000Z	21 \| good	2.615 \| good	17.005 \| good	22.749 \| good	0.173 \| good	11.458 \| good	0.298 \| good
2026-10-21T14:00:00.000Z	22 \| good	2.882 \| good	12.798 \| good	23.931 \| good	0.31 \| good	11.851 \| good	0.281 \| good
2026-10-21T15:00:00.000Z	23 \| good	3.164 \| good	18.791 \| good	24.503 \| good	0.295 \| good	10.513 \| good	0.276 \| good
2026-10-21T16:00:00.000Z	24 \| good	2.672 \| good	9.787 \| good	25.782 \| good	0.291 \| good	8.14 \| good	0.257 \| good
2026-10-21T17:00:00.000Z	28 \| good	2.816 \| good	12.253 \| good	30.426 \| good	0.281 \| good	8.723 \| good	0.22 \| good
2026-10-21T18:00:00.000Z	30 \| good	2.714 \| good	11.161 \| good	32.402 \| good	0.266 \| good	7.912 \| good	0.236 \| good
2026-10-21T19:00:00.000Z	25 \| good	2.67 \| good	11.973 \| good	26.983 \| good	0.194 \| good	7.971 \| good	0.236 \| good
2026-10-21T20:00:00.000Z	28 \| good	2.596 \| good	11.002 \| good	30.165 \| good	0.159 \| good	8.392 \| good	0.236 \| good
2026-10-21T21:00:00.000Z	26 \| good	3.334 \| good	13.441 \| good	27.643 \| good	0.266 \| good	5.039 \| good	0.158 \| good
2026-10-21T22:00:00.000Z	28 \| good	2.821 \| good	15.903 \| good	30.061 \| good	0.221 \| good	10.267 \| good	0.236 \| good
2026-10-21T23:00:00.000Z	26 \| good	3.11 \| good	11.945 \| good	27.829 \| good	0.121 \| good	5.425 \| good	0.18 \| good
2026-10-22T00:00:00.000Z	27 \| good	5.009 \| good	26.048 \| good	22.234 \| good	0.391 \| good	9.921 \| good	0.256 \| good
2026-10-22T01:00:00.000Z	27 \| good	4.682 \| good	24.434 \| good	22.821 \| good	0.444 \| good	11.565 \| good	0.291 \| good
2026-10-22T02:00:00.000Z	22 \| good	3.744 \| good	22.607 \| good	21.638 \| good	0.371 \| good	11.934 \| good	0.299 \| good
2026-10-22T03:00:00.000Z	38 \| good	7.291 \| good	32.067 \| good	13.399 \| good	0.658 \| good	15.241 \| good	0.24 \| good
2026-10-22T04:00:00.000Z	17 \| good	3.432 \| good	17.995 \| good	13.567 \| good	0.25 \| good	13.795 \| good	0.235 \| good
2026-10-22T05:00:00.000Z	27 \| good	5.012 \| good	23.908 \| good	16.127 \| good	0.247 \| good	12.062 \| good	0.21 \| good
2026-10-22T06:00:00.000Z	27 \| good	5.114 \| good	26.379 \| good	18.487 \| good	0.242 \| good	12.108 \| good	0.21 \| good
2026-10-22T07:00:00.000Z	33 \| good	5.677 \| good	27.317 \| good	13.846 \| good	0.239 \| good	6.03 \| good	0.157 \| good
2026-10-22T08:00:00.000Z	27 \| good	5.052 \| good	21.103 \| good	13.46 \| good	0.413 \| good	8.331 \| good	0.195 \| good
2026-10-22T09:00:00.000Z	22 \| good	3.875 \| good	18.508 \| good	13.781 \| good	0.126 \| good	11.039 \| good	0.159 \| good
2026-10-22T10:00:00.000Z	22 \| good	4.388 \| good	20.411 \| good	18.756 \| good	0.63 \| good	14.929 \| good	0.236 \| good
2026-10-22T11:00:00.000Z	22 \| good	3.59 \| good	16.34 \| good	17.208 \| good	1.175 \| good	15.456 \| good	0.236 \| good
2026-10-22T12:00:00.000Z	22 \| good	4.186 \| good	19.125 \| good	17.246 \| good	0.697 \| good	17.622 \| good	0.251 \| good
2026-10-22T13:00:00.000Z	27 \| good	4.87 \| good	23.499 \| good	17.015 \| good	0.716 \| good	17.635 \| good	0.232 \| good
2026-10-22T14:00:00.000Z	22 \| good	3.983 \| good	18.572 \| good	21.995 \| good	0.263 \| good	10.452 \| good	0.258 \| good
2026-10-22T15:00:00.000Z	22 \| good	3.912 \| good	13.182 \| good	22.792 \| good	0.263 \| good	7.13 \| good	0.158 \| good
2026-10-22T16:00:00.000Z	25 \| good	3.103 \| good	12.932 \| good	26.775 \| good	0.305 \| good	10.713 \| good	0.275 \| good
2026-10-22T17:00:00.000Z	31 \| good	3.259 \| good	13.527 \| good	32.716 \| good	0.304 \| good	10.551 \| good	0.275 \| good
2026-10-22T18:00:00.000Z	31 \| good	2.606 \| good	8.655 \| good	34.061 \| good	0.316 \| good	9.743 \| good	0.275 \| good
2026-10-22T19:00:00.000Z	32 \| good	2.564 \| good	10.138 \| good	34.925 \| good	0.322 \| good	8.887 \| good	0.269 \| good
2026-10-22T20:00:00.000Z	31 \| good	2.709 \| good	10.997 \| good	34.323 \| good	0.328 \| good	9.799 \| good	0.275 \| good
2026-10-22T21:00:00.000Z	34 \| good	2.606 \| good	10.29 \| good	36.643 \| good	0.309 \| good	8.465 \| good	0.295 \| good
2026-10-22T21:00:00.000Z	34 \| good	2.606 \| good	10.29 \| good	36.643 \| good	0.309 \| good	8.465 \| good	0.295 \| good
2026-10-22T22:00:00.000Z	25 \| good	3.562 \| good	15.757 \| good	26.619 \| good	0.663 \| good	6.312 \| good	0.204 \| good
2026-10-22T23:00:00.000Z	20 \| good	3.361 \| good	15.049 \| good	21.742 \| good	0.694 \| good	9.008 \| good	0.222 \| good
2026-10-23T00:00:00.000Z	27 \| good	4.645 \| good	20.269 \| good	23.499 \| good	0.749 \| good	8.81 \| good	0.218 \| good
2026-10-23T01:00:00.000Z	27 \| good	5.422 \| good	23.33 \| good	22.582 \| good	0.812 \| good	7.685 \| good	0.209 \| good
2026-10-23T02:00:00.000Z	27 \| good	4.908 \| good	21.336 \| good	22.793 \| good	0.867 \| good	6.629 \| good	0.203 \| good
2026-10-23T03:00:00.000Z	27 \| good	5.147 \| good	22.336 \| good	22.517 \| good	0.896 \| good	5.869 \| good	0.2 \| good
2026-10-23T04:00:00.000Z	33 \| good	6.05 \| good	26.991 \| good	21.275 \| good	0.875 \| good	5.007 \| good	0.196 \| good
2026-10-23T05:00:00.000Z	33 \| good	6.407 \| good	28.588 \| good	22.001 \| good	0.804 \| good	4.192 \| good	0.192 \| good
2026-10-23T06:00:00.000Z	38 \| good	6.843 \| good	30.466 \| good	21.496 \| good	0.713 \| good	3.718 \| good	0.188 \| good
2026-10-23T07:00:00.000Z	33 \| good	6.471 \| good	28.656 \| good	20.517 \| good	0.627 \| good	3.492 \| good	0.185 \| good
2026-10-23T08:00:00.000Z	33 \| good	6.051 \| good	26.733 \| good	19.623 \| good	0.563 \| good	3.451 \| good	0.183 \| good
2026-10-23T09:00:00.000Z	33 \| good	5.736 \| good	25.143 \| good	20.681 \| good	0.53 \| good	3.485 \| good	0.182 \| good
2026-10-23T10:00:00.000Z	27 \| good	5.039 \| good	21.799 \| good	19.276 \| good	0.537 \| good	3.661 \| good	0.182 \| good
2026-10-23T11:00:00.000Z	27 \| good	4.642 \| good	20.182 \| good	17.541 \| good	0.585 \| good	4.486 \| good	0.185 \| good
2026-10-23T12:00:00.000Z	19 \| good	2.921 \| good	11.926 \| good	20.345 \| good	0.654 \| good	5.665 \| good	0.191 \| good
2026-10-23T13:00:00.000Z	22 \| good	1.747 \| good	7.032 \| good	24.142 \| good	0.725 \| good	4.432 \| good	0.183 \| good
2026-10-23T14:00:00.000Z	22 \| good	2.429 \| good	9.787 \| good	24.228 \| good	0.763 \| good	3.476 \| good	0.171 \| good
2026-10-23T15:00:00.000Z	23 \| good	2.623 \| good	10.789 \| good	24.925 \| good	0.787 \| good	3.095 \| good	0.165 \| good
2026-10-23T16:00:00.000Z	24 \| good	2.849 \| good	11.683 \| good	26.495 \| good	0.809 \| good	2.926 \| good	0.162 \| good
2026-10-23T17:00:00.000Z	27 \| good	3.705 \| good	16.31 \| good	28.856 \| good	0.813 \| good	2.843 \| good	0.16 \| good
2026-10-23T18:00:00.000Z	29 \| good	4.199 \| good	18.622 \| good	30.712 \| good	0.793 \| good	2.799 \| good	0.157 \| good
2026-10-23T19:00:00.000Z	28 \| good	4.575 \| good	20.03 \| good	30.26 \| good	0.773 \| good	2.827 \| good	0.154 \| good
2026-10-23T20:00:00.000Z	29 \| good	4.708 \| good	20.838 \| good	31.421 \| good	0.767 \| good	3.096 \| good	0.154 \| good
2026-10-23T21:00:00.000Z	33 \| good	6.325 \| good	28.149 \| good	27.279 \| good	0.776 \| good	3.886 \| good	0.158 \| good
2026-10-23T22:00:00.000Z	52 \| moderate	10.104 \| good	45.165 \| good	15.877 \| good	0.817 \| good	11.118 \| good	0.215 \| good
2026-10-23T23:00:00.000Z	56 \| moderate	12.141 \| fine	54.371 \| good	9.065 \| good	0.958 \| good	21.833 \| good	0.304 \| good
2026-10-24T00:00:00.000Z	60 \| moderate	13.867 \| fine	62.543 \| fine	4.507 \| good	1.107 \| good	27.074 \| good	0.372 \| good
2026-10-24T01:00:00.000Z	62 \| moderate	14.768 \| fine	66.058 \| fine	1.887 \| good	1.247 \| good	28.125 \| good	0.406 \| good
2026-10-24T02:00:00.000Z	60 \| moderate	13.898 \| fine	62.133 \| fine	1.864 \| good	1.368 \| good	28.14 \| good	0.426 \| good
2026-10-24T03:00:00.000Z	56 \| moderate	12.484 \| fine	55.555 \| fine	1.591 \| good	1.432 \| good	27.989 \| good	0.436 \| good
2026-10-24T04:00:00.000Z	56 \| moderate	12.367 \| fine	54.965 \| good	2.822 \| good	1.433 \| good	27.781 \| good	0.442 \| good
2026-10-24T05:00:00.000Z	58 \| moderate	12.764 \| fine	56.755 \| fine	3.546 \| good	1.413 \| good	27.765 \| good	0.446 \| good
2026-10-24T06:00:00.000Z	58 \| moderate	13.441 \| fine	60.91 \| fine	3.091 \| good	1.403 \| good	27.804 \| good	0.453 \| good
2026-10-24T07:00:00.000Z	62 \| moderate	15.223 \| fine	67.792 \| fine	2.967 \| good	1.327 \| good	27.026 \| good	0.465 \| good
2026-10-24T08:00:00.000Z	66 \| moderate	17.358 \| fine	76.909 \| fine	3.211 \| good	1.221 \| good	26.374 \| good	0.457 \| good
2026-10-24T09:00:00.000Z	69 \| moderate	18.765 \| fine	82.547 \| fine	5.324 \| good	1.157 \| good	26.087 \| good	0.433 \| good
2026-10-24T10:00:00.000Z	69 \| moderate	19.039 \| fine	84.213 \| fine	6.285 \| good	1.154 \| good	25.867 \| good	0.411 \| good
2026-10-24T11:00:00.000Z	67 \| moderate	17.8 \| fine	79.023 \| fine	7.136 \| good	1.186 \| good	25.546 \| good	0.4 \| good
2026-10-24T12:00:00.000Z	67 \| moderate	18.001 \| fine	80.151 \| fine	8.724 \| good	1.235 \| good	22.358 \| good	0.409 \| good
2026-10-24T13:00:00.000Z	67 \| moderate	17.744 \| fine	78.778 \| fine	12.982 \| good	1.076 \| good	16.548 \| good	0.401 \| good
2026-10-24T14:00:00.000Z	56 \| moderate	12.05 \| good	53.856 \| good	19.627 \| good	0.822 \| good	13.042 \| good	0.312 \| good
2026-10-24T15:00:00.000Z	49 \| good	9.243 \| good	41.388 \| good	27.009 \| good	1.158 \| good	9.073 \| good	0.23 \| good
2026-10-24T16:00:00.000Z	44 \| good	7.987 \| good	34.837 \| good	31.554 \| good	1.333 \| good	5.66 \| good	0.185 \| good
2026-10-24T17:00:00.000Z	44 \| good	8.297 \| good	36.32 \| good	35.288 \| good	1.247 \| good	4.502 \| good	0.174 \| good
2026-10-24T18:00:00.000Z	49 \| good	8.805 \| good	38.77 \| good	37.214 \| good	1.208 \| good	4.188 \| good	0.17 \| good
2026-10-24T19:00:00.000Z	49 \| good	9.301 \| good	41.324 \| good	35.378 \| good	1.203 \| good	4.182 \| good	0.169 \| good
2026-10-24T20:00:00.000Z	49 \| good	8.842 \| good	39.283 \| good	34.125 \| good	1.211 \| good	4.47 \| good	0.169 \| good
2026-10-24T21:00:00.000Z	49 \| good	9.14 \| good	40.628 \| good	31.265 \| good	1.25 \| good	5.402 \| good	0.172 \| 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 sulfur dioxide (SO2) level in Willistown, Pennsylvania at the moment?

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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?