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

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.644 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 6.4 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 16.214 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 23.025 μg/m3.

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

The PM10 concentration in Willistown, Pennsylvania is 74.606 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)

Moderate

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)

23.02 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

74.61 μg/m³

155

255

425

605+

Ozone (O₃)

6.40 ppb

201

201+

Sulfur Dioxide (SO₂)

0.64 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

16.21 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.68 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
2025-12-05T15:00:00.000Z	26 \| good	3.117 \| good	12.779 \| good	27.78 \| good	0.22 \| good	16.696 \| good	0.364 \| good
2025-12-05T16:00:00.000Z	24 \| good	3.674 \| good	14.694 \| good	26.059 \| good	0.225 \| good	16.038 \| good	0.342 \| good
2025-12-05T17:00:00.000Z	22 \| good	4.171 \| good	17.607 \| good	23.269 \| good	0.309 \| good	14.093 \| good	0.342 \| good
2025-12-05T18:00:00.000Z	22 \| good	3.647 \| good	17.106 \| good	24.295 \| good	0.491 \| good	15.871 \| good	0.364 \| good
2025-12-05T19:00:00.000Z	22 \| good	3.963 \| good	17.314 \| good	22.372 \| good	0.501 \| good	15.842 \| good	0.302 \| good
2025-12-05T20:00:00.000Z	22 \| good	4.157 \| good	15.479 \| good	21.871 \| good	0.44 \| good	18.858 \| good	0.364 \| good
2025-12-05T21:00:00.000Z	22 \| good	4.233 \| good	17.071 \| good	20.766 \| good	0.444 \| good	20.553 \| good	0.386 \| good
2025-12-05T22:00:00.000Z	27 \| good	4.814 \| good	24.335 \| good	16.238 \| good	0.374 \| good	23.066 \| good	0.421 \| good
2025-12-05T23:00:00.000Z	27 \| good	5.193 \| good	21.34 \| good	17 \| good	0.365 \| good	22.668 \| good	0.397 \| good
2025-12-06T00:00:00.000Z	27 \| good	5.428 \| good	25.847 \| good	17.776 \| good	0.349 \| good	19.839 \| good	0.364 \| good
2025-12-06T01:00:00.000Z	33 \| good	5.916 \| good	28.252 \| good	17.153 \| good	0.353 \| good	20.96 \| good	0.388 \| good
2025-12-06T02:00:00.000Z	33 \| good	6.38 \| good	24.516 \| good	11.416 \| good	0.356 \| good	20.603 \| good	0.415 \| good
2025-12-06T03:00:00.000Z	33 \| good	6.453 \| good	26.374 \| good	14.215 \| good	0.362 \| good	21.147 \| good	0.431 \| good
2025-12-06T04:00:00.000Z	38 \| good	6.758 \| good	32.947 \| good	11.534 \| good	0.343 \| good	19.883 \| good	0.431 \| good
2025-12-06T05:00:00.000Z	44 \| good	8.397 \| good	38.401 \| good	8.855 \| good	0.282 \| good	21.84 \| good	0.431 \| good
2025-12-06T06:00:00.000Z	52 \| moderate	9.594 \| good	51.371 \| good	9.139 \| good	0.282 \| good	20.47 \| good	0.415 \| good
2025-12-06T07:00:00.000Z	49 \| good	8.952 \| good	39.297 \| good	7.545 \| good	0.281 \| good	19.172 \| good	0.415 \| good
2025-12-06T08:00:00.000Z	58 \| moderate	13.404 \| fine	39.882 \| good	8.007 \| good	0.29 \| good	17.459 \| good	0.431 \| good
2025-12-06T09:00:00.000Z	64 \| moderate	16.329 \| fine	30.685 \| good	10.447 \| good	0.298 \| good	13.711 \| good	0.426 \| good
2025-12-06T10:00:00.000Z	69 \| moderate	18.835 \| fine	86.314 \| fine	9.174 \| good	0.26 \| good	13.347 \| good	0.431 \| good
2025-12-06T11:00:00.000Z	69 \| moderate	19.12 \| fine	75.193 \| fine	7.492 \| good	0.244 \| good	13.238 \| good	0.409 \| good
2025-12-06T12:00:00.000Z	71 \| moderate	19.775 \| fine	79.479 \| fine	6.105 \| good	0.282 \| good	20.058 \| good	0.415 \| good
2025-12-06T13:00:00.000Z	69 \| moderate	19.076 \| fine	67.497 \| fine	4.523 \| good	0.295 \| good	18.808 \| good	0.431 \| good
2025-12-06T14:00:00.000Z	77 \| moderate	23.062 \| fine	75.127 \| fine	7.296 \| good	0.369 \| good	16.919 \| good	0.477 \| good
2025-12-06T15:00:00.000Z	77 \| moderate	22.856 \| fine	96.812 \| fine	8.565 \| good	0.398 \| good	16.058 \| good	0.533 \| good
2025-12-06T16:00:00.000Z	77 \| moderate	22.669 \| fine	96.986 \| fine	7.942 \| good	0.383 \| good	13.003 \| good	0.547 \| good
2025-12-06T17:00:00.000Z	75 \| moderate	21.703 \| fine	95.312 \| fine	10.69 \| good	0.329 \| good	10.245 \| good	0.496 \| good
2025-12-06T18:00:00.000Z	75 \| moderate	22.468 \| fine	52.494 \| good	9.895 \| good	0.282 \| good	9.52 \| good	0.524 \| good
2025-12-06T19:00:00.000Z	75 \| moderate	22.442 \| fine	61.391 \| fine	16.191 \| good	0.238 \| good	7.449 \| good	0.451 \| good
2025-12-06T20:00:00.000Z	75 \| moderate	22.371 \| fine	60.245 \| fine	19.815 \| good	0.325 \| good	6.989 \| good	0.402 \| good
2025-12-06T21:00:00.000Z	67 \| moderate	17.534 \| fine	74.556 \| fine	18.545 \| good	0.247 \| good	6.494 \| good	0.369 \| good
2025-12-06T22:00:00.000Z	62 \| moderate	15.191 \| fine	54.722 \| good	19.651 \| good	0.234 \| good	13.066 \| good	0.375 \| good
2025-12-06T23:00:00.000Z	67 \| moderate	17.903 \| fine	80.375 \| fine	15.645 \| good	0.408 \| good	15.347 \| good	0.348 \| good
2025-12-07T00:00:00.000Z	71 \| moderate	20.118 \| fine	89.518 \| fine	16.413 \| good	0.532 \| good	18.319 \| good	0.37 \| good
2025-12-07T01:00:00.000Z	73 \| moderate	21.111 \| fine	90.537 \| fine	13.215 \| good	0.693 \| good	14.964 \| good	0.399 \| good
2025-12-07T02:00:00.000Z	86 \| moderate	27.612 \| fine	105.194 \| fine	11.346 \| good	0.866 \| good	14.343 \| good	0.464 \| good
2025-12-07T03:00:00.000Z	84 \| moderate	27.135 \| fine	105.68 \| fine	6.736 \| good	0.92 \| good	16.542 \| good	0.656 \| good
2025-12-07T04:00:00.000Z	90 \| moderate	30.026 \| fine	100.882 \| fine	4.95 \| good	0.946 \| good	14.701 \| good	0.68 \| good
2025-12-07T05:00:00.000Z	88 \| moderate	28.972 \| fine	105.579 \| fine	3.868 \| good	1.047 \| good	13.246 \| good	0.716 \| good
2025-12-07T06:00:00.000Z	84 \| moderate	26.543 \| fine	81.734 \| fine	5.03 \| good	1.141 \| good	17.686 \| good	0.686 \| good
2025-12-07T07:00:00.000Z	84 \| moderate	27.398 \| fine	50.793 \| good	4.982 \| good	1.066 \| good	17.369 \| good	0.702 \| good
2025-12-07T08:00:00.000Z	82 \| moderate	25.996 \| fine	78.806 \| fine	6.12 \| good	0.876 \| good	20.079 \| good	0.664 \| good
2025-12-07T09:00:00.000Z	82 \| moderate	25.617 \| fine	95.943 \| fine	13.479 \| good	0.683 \| good	17.601 \| good	0.582 \| good
2025-12-07T10:00:00.000Z	81 \| moderate	24.898 \| fine	45.917 \| good	10.524 \| good	0.554 \| good	18.161 \| good	0.538 \| good
2025-12-07T11:00:00.000Z	79 \| moderate	23.935 \| fine	68.911 \| fine	6.021 \| good	0.605 \| good	15.883 \| good	0.565 \| good
2025-12-07T12:00:00.000Z	75 \| moderate	21.518 \| fine	90.535 \| fine	6.923 \| good	0.612 \| good	15.66 \| good	0.654 \| good
2025-12-07T13:00:00.000Z	77 \| moderate	23.025 \| fine	74.606 \| fine	6.4 \| good	0.644 \| good	16.214 \| good	0.681 \| good
2025-12-07T14:00:00.000Z	71 \| moderate	19.697 \| fine	89.842 \| fine	8.403 \| good	0.688 \| good	16.027 \| good	0.833 \| good
2025-12-07T14:00:00.000Z	77 \| moderate	23.025 \| fine	74.606 \| fine	6.4 \| good	0.644 \| good	16.214 \| good	0.681 \| good
2025-12-07T15:00:00.000Z	73 \| moderate	21.314 \| fine	93.786 \| fine	19.194 \| good	3.863 \| good	8.601 \| good	0.284 \| good
2025-12-07T16:00:00.000Z	69 \| moderate	19.494 \| fine	85.944 \| fine	23.858 \| good	3.506 \| good	7.282 \| good	0.252 \| good
2025-12-07T17:00:00.000Z	66 \| moderate	16.765 \| fine	74.463 \| fine	26.817 \| good	3.149 \| good	5.963 \| good	0.221 \| good
2025-12-07T18:00:00.000Z	66 \| moderate	16.909 \| fine	75.192 \| fine	27.516 \| good	2.791 \| good	4.645 \| good	0.189 \| good
2025-12-07T19:00:00.000Z	66 \| moderate	16.812 \| fine	74.476 \| fine	27.699 \| good	3.025 \| good	5.401 \| good	0.191 \| good
2025-12-07T20:00:00.000Z	60 \| moderate	13.924 \| fine	62.198 \| fine	27.837 \| good	3.259 \| good	6.157 \| good	0.193 \| good
2025-12-07T21:00:00.000Z	66 \| moderate	17.062 \| fine	75.567 \| fine	22.13 \| good	3.492 \| good	6.913 \| good	0.195 \| good
2025-12-07T22:00:00.000Z	71 \| moderate	20.027 \| fine	87.664 \| fine	15.93 \| good	3.652 \| good	11.331 \| good	0.235 \| good
2025-12-07T23:00:00.000Z	79 \| moderate	23.664 \| fine	103.251 \| fine	10.524 \| good	3.811 \| good	15.749 \| good	0.274 \| good
2025-12-08T00:00:00.000Z	71 \| moderate	20.182 \| fine	88.903 \| fine	10.092 \| good	3.971 \| good	20.167 \| good	0.314 \| good
2025-12-08T01:00:00.000Z	75 \| moderate	21.626 \| fine	94.984 \| fine	11.111 \| good	4.231 \| good	20.516 \| good	0.32 \| good
2025-12-08T02:00:00.000Z	75 \| moderate	22.256 \| fine	97.211 \| fine	12.776 \| good	4.492 \| good	20.866 \| good	0.326 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	22.49 \| fine	98.268 \| fine	13.226 \| good	4.752 \| good	21.215 \| good	0.332 \| good
2025-12-08T04:00:00.000Z	71 \| moderate	20.29 \| fine	89.134 \| fine	13.594 \| good	4.788 \| good	18.875 \| good	0.315 \| good
2025-12-08T05:00:00.000Z	64 \| moderate	15.67 \| fine	69.389 \| fine	16.748 \| good	4.824 \| good	16.535 \| good	0.299 \| good
2025-12-08T06:00:00.000Z	56 \| moderate	11.829 \| good	52.225 \| good	21.552 \| good	4.86 \| good	14.196 \| good	0.283 \| good
2025-12-08T07:00:00.000Z	38 \| good	7.34 \| good	32.524 \| good	23.973 \| good	3.936 \| good	10.804 \| good	0.251 \| good
2025-12-08T08:00:00.000Z	24 \| good	2.633 \| good	10.938 \| good	25.636 \| good	3.013 \| good	7.413 \| good	0.219 \| good
2025-12-08T09:00:00.000Z	27 \| good	1.016 \| good	4.272 \| good	28.752 \| good	2.089 \| good	4.022 \| good	0.187 \| good
2025-12-08T10:00:00.000Z	26 \| good	0.883 \| good	3.443 \| good	27.621 \| good	1.67 \| good	3.904 \| good	0.179 \| good
2025-12-08T11:00:00.000Z	24 \| good	1.918 \| good	7.962 \| good	26.287 \| good	1.25 \| good	3.785 \| good	0.171 \| good
2025-12-08T12:00:00.000Z	25 \| good	2.586 \| good	10.4 \| good	26.657 \| good	0.831 \| good	3.666 \| good	0.163 \| good
2025-12-08T13:00:00.000Z	28 \| good	2.964 \| good	12.607 \| good	29.888 \| good	0.777 \| good	3.365 \| good	0.163 \| good
2025-12-08T14:00:00.000Z	27 \| good	3.691 \| good	16.287 \| good	29.437 \| good	0.724 \| good	3.065 \| good	0.163 \| good
2025-12-08T15:00:00.000Z	26 \| good	2.941 \| good	12.048 \| good	28.025 \| good	0.67 \| good	2.764 \| good	0.163 \| good
2025-12-08T16:00:00.000Z	25 \| good	2.928 \| good	12.048 \| good	26.658 \| good	0.7 \| good	2.716 \| good	0.159 \| good
2025-12-08T17:00:00.000Z	25 \| good	2.618 \| good	10.632 \| good	26.663 \| good	0.731 \| good	2.668 \| good	0.156 \| good
2025-12-08T18:00:00.000Z	25 \| good	2.267 \| good	9.143 \| good	27.106 \| good	0.761 \| good	2.619 \| good	0.152 \| good
2025-12-08T19:00:00.000Z	26 \| good	1.916 \| good	7.616 \| good	27.516 \| good	0.807 \| good	3.263 \| good	0.154 \| good
2025-12-08T20:00:00.000Z	26 \| good	0.746 \| good	2.926 \| good	27.885 \| good	0.853 \| good	3.907 \| good	0.155 \| good
2025-12-08T21:00:00.000Z	23 \| good	1.538 \| good	6.397 \| good	25.119 \| good	0.899 \| good	4.551 \| good	0.156 \| good
2025-12-08T22:00:00.000Z	22 \| good	3.626 \| good	16.172 \| good	17.875 \| good	1.027 \| good	6.704 \| good	0.175 \| good
2025-12-08T23:00:00.000Z	27 \| good	4.856 \| good	21.121 \| good	12.615 \| good	1.156 \| good	8.856 \| good	0.193 \| good
2025-12-09T00:00:00.000Z	22 \| good	4.053 \| good	17.681 \| good	12.162 \| good	1.284 \| good	11.009 \| good	0.211 \| good
2025-12-09T01:00:00.000Z	22 \| good	4.267 \| good	18.643 \| good	13.37 \| good	1.284 \| good	10.628 \| good	0.209 \| good
2025-12-09T02:00:00.000Z	27 \| good	4.942 \| good	21.71 \| good	13.574 \| good	1.284 \| good	10.248 \| good	0.207 \| good
2025-12-09T03:00:00.000Z	33 \| good	5.963 \| good	26.347 \| good	11.353 \| good	1.284 \| good	9.867 \| good	0.205 \| good
2025-12-09T04:00:00.000Z	38 \| good	6.964 \| good	31.01 \| good	10.363 \| good	1.223 \| good	8.951 \| good	0.199 \| good
2025-12-09T05:00:00.000Z	44 \| good	7.883 \| good	34.696 \| good	10.32 \| good	1.161 \| good	8.034 \| good	0.193 \| good
2025-12-09T06:00:00.000Z	49 \| good	8.603 \| good	37.638 \| good	10.294 \| good	1.1 \| good	7.118 \| good	0.186 \| good
2025-12-09T07:00:00.000Z	44 \| good	8.205 \| good	36.335 \| good	10.416 \| good	1.221 \| good	7.205 \| good	0.188 \| good
2025-12-09T08:00:00.000Z	44 \| good	8.026 \| good	35.216 \| good	8.896 \| good	1.343 \| good	7.292 \| good	0.19 \| good
2025-12-09T09:00:00.000Z	44 \| good	8.036 \| good	35.311 \| good	6.883 \| good	1.464 \| good	7.38 \| good	0.191 \| good
2025-12-09T10:00:00.000Z	44 \| good	8.431 \| good	36.99 \| good	6.712 \| good	1.781 \| good	9.557 \| good	0.21 \| good
2025-12-09T11:00:00.000Z	52 \| moderate	10.13 \| good	44.812 \| good	4.857 \| good	2.097 \| good	11.734 \| good	0.229 \| good
2025-12-09T12:00:00.000Z	56 \| moderate	11.944 \| good	53.343 \| good	2.821 \| good	2.414 \| good	13.911 \| good	0.247 \| good
2025-12-09T13:00:00.000Z	60 \| moderate	14.402 \| fine	64.155 \| fine	6.849 \| good	2.503 \| good	13.094 \| good	0.237 \| good
2025-12-09T14:00:00.000Z	62 \| moderate	14.928 \| fine	66.443 \| fine	10.152 \| good	2.592 \| good	12.277 \| good	0.226 \| good

Willistown

Get reliable air quality data to drive your business

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

0.68ppm

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 04:00:00 on 2025-12-07.

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 10:00:00 on 2025-12-06.

What is the AQI in Willistown, Pennsylvania right now?

As of now, the AQI in Willistown, Pennsylvania is 77, indicating Moderate conditions.

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

Willistown, Pennsylvania air has the highest levels of PM2.5.

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 23.025 μg/m³.

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

The PM₁₀ concentration in Willistown, Pennsylvania is 74.606 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 0.681 ppm.

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

Currently, Willistown, Pennsylvania has a sulfur dioxide (SO₂) concentration of 0.644 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 6.4 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 16.214 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T15:00:00.000Z	26 \| good	3.117 \| good	12.779 \| good	27.78 \| good	0.22 \| good	16.696 \| good	0.364 \| good
2025-12-05T16:00:00.000Z	24 \| good	3.674 \| good	14.694 \| good	26.059 \| good	0.225 \| good	16.038 \| good	0.342 \| good
2025-12-05T17:00:00.000Z	22 \| good	4.171 \| good	17.607 \| good	23.269 \| good	0.309 \| good	14.093 \| good	0.342 \| good
2025-12-05T18:00:00.000Z	22 \| good	3.647 \| good	17.106 \| good	24.295 \| good	0.491 \| good	15.871 \| good	0.364 \| good
2025-12-05T19:00:00.000Z	22 \| good	3.963 \| good	17.314 \| good	22.372 \| good	0.501 \| good	15.842 \| good	0.302 \| good
2025-12-05T20:00:00.000Z	22 \| good	4.157 \| good	15.479 \| good	21.871 \| good	0.44 \| good	18.858 \| good	0.364 \| good
2025-12-05T21:00:00.000Z	22 \| good	4.233 \| good	17.071 \| good	20.766 \| good	0.444 \| good	20.553 \| good	0.386 \| good
2025-12-05T22:00:00.000Z	27 \| good	4.814 \| good	24.335 \| good	16.238 \| good	0.374 \| good	23.066 \| good	0.421 \| good
2025-12-05T23:00:00.000Z	27 \| good	5.193 \| good	21.34 \| good	17 \| good	0.365 \| good	22.668 \| good	0.397 \| good
2025-12-06T00:00:00.000Z	27 \| good	5.428 \| good	25.847 \| good	17.776 \| good	0.349 \| good	19.839 \| good	0.364 \| good
2025-12-06T01:00:00.000Z	33 \| good	5.916 \| good	28.252 \| good	17.153 \| good	0.353 \| good	20.96 \| good	0.388 \| good
2025-12-06T02:00:00.000Z	33 \| good	6.38 \| good	24.516 \| good	11.416 \| good	0.356 \| good	20.603 \| good	0.415 \| good
2025-12-06T03:00:00.000Z	33 \| good	6.453 \| good	26.374 \| good	14.215 \| good	0.362 \| good	21.147 \| good	0.431 \| good
2025-12-06T04:00:00.000Z	38 \| good	6.758 \| good	32.947 \| good	11.534 \| good	0.343 \| good	19.883 \| good	0.431 \| good
2025-12-06T05:00:00.000Z	44 \| good	8.397 \| good	38.401 \| good	8.855 \| good	0.282 \| good	21.84 \| good	0.431 \| good
2025-12-06T06:00:00.000Z	52 \| moderate	9.594 \| good	51.371 \| good	9.139 \| good	0.282 \| good	20.47 \| good	0.415 \| good
2025-12-06T07:00:00.000Z	49 \| good	8.952 \| good	39.297 \| good	7.545 \| good	0.281 \| good	19.172 \| good	0.415 \| good
2025-12-06T08:00:00.000Z	58 \| moderate	13.404 \| fine	39.882 \| good	8.007 \| good	0.29 \| good	17.459 \| good	0.431 \| good
2025-12-06T09:00:00.000Z	64 \| moderate	16.329 \| fine	30.685 \| good	10.447 \| good	0.298 \| good	13.711 \| good	0.426 \| good
2025-12-06T10:00:00.000Z	69 \| moderate	18.835 \| fine	86.314 \| fine	9.174 \| good	0.26 \| good	13.347 \| good	0.431 \| good
2025-12-06T11:00:00.000Z	69 \| moderate	19.12 \| fine	75.193 \| fine	7.492 \| good	0.244 \| good	13.238 \| good	0.409 \| good
2025-12-06T12:00:00.000Z	71 \| moderate	19.775 \| fine	79.479 \| fine	6.105 \| good	0.282 \| good	20.058 \| good	0.415 \| good
2025-12-06T13:00:00.000Z	69 \| moderate	19.076 \| fine	67.497 \| fine	4.523 \| good	0.295 \| good	18.808 \| good	0.431 \| good
2025-12-06T14:00:00.000Z	77 \| moderate	23.062 \| fine	75.127 \| fine	7.296 \| good	0.369 \| good	16.919 \| good	0.477 \| good
2025-12-06T15:00:00.000Z	77 \| moderate	22.856 \| fine	96.812 \| fine	8.565 \| good	0.398 \| good	16.058 \| good	0.533 \| good
2025-12-06T16:00:00.000Z	77 \| moderate	22.669 \| fine	96.986 \| fine	7.942 \| good	0.383 \| good	13.003 \| good	0.547 \| good
2025-12-06T17:00:00.000Z	75 \| moderate	21.703 \| fine	95.312 \| fine	10.69 \| good	0.329 \| good	10.245 \| good	0.496 \| good
2025-12-06T18:00:00.000Z	75 \| moderate	22.468 \| fine	52.494 \| good	9.895 \| good	0.282 \| good	9.52 \| good	0.524 \| good
2025-12-06T19:00:00.000Z	75 \| moderate	22.442 \| fine	61.391 \| fine	16.191 \| good	0.238 \| good	7.449 \| good	0.451 \| good
2025-12-06T20:00:00.000Z	75 \| moderate	22.371 \| fine	60.245 \| fine	19.815 \| good	0.325 \| good	6.989 \| good	0.402 \| good
2025-12-06T21:00:00.000Z	67 \| moderate	17.534 \| fine	74.556 \| fine	18.545 \| good	0.247 \| good	6.494 \| good	0.369 \| good
2025-12-06T22:00:00.000Z	62 \| moderate	15.191 \| fine	54.722 \| good	19.651 \| good	0.234 \| good	13.066 \| good	0.375 \| good
2025-12-06T23:00:00.000Z	67 \| moderate	17.903 \| fine	80.375 \| fine	15.645 \| good	0.408 \| good	15.347 \| good	0.348 \| good
2025-12-07T00:00:00.000Z	71 \| moderate	20.118 \| fine	89.518 \| fine	16.413 \| good	0.532 \| good	18.319 \| good	0.37 \| good
2025-12-07T01:00:00.000Z	73 \| moderate	21.111 \| fine	90.537 \| fine	13.215 \| good	0.693 \| good	14.964 \| good	0.399 \| good
2025-12-07T02:00:00.000Z	86 \| moderate	27.612 \| fine	105.194 \| fine	11.346 \| good	0.866 \| good	14.343 \| good	0.464 \| good
2025-12-07T03:00:00.000Z	84 \| moderate	27.135 \| fine	105.68 \| fine	6.736 \| good	0.92 \| good	16.542 \| good	0.656 \| good
2025-12-07T04:00:00.000Z	90 \| moderate	30.026 \| fine	100.882 \| fine	4.95 \| good	0.946 \| good	14.701 \| good	0.68 \| good
2025-12-07T05:00:00.000Z	88 \| moderate	28.972 \| fine	105.579 \| fine	3.868 \| good	1.047 \| good	13.246 \| good	0.716 \| good
2025-12-07T06:00:00.000Z	84 \| moderate	26.543 \| fine	81.734 \| fine	5.03 \| good	1.141 \| good	17.686 \| good	0.686 \| good
2025-12-07T07:00:00.000Z	84 \| moderate	27.398 \| fine	50.793 \| good	4.982 \| good	1.066 \| good	17.369 \| good	0.702 \| good
2025-12-07T08:00:00.000Z	82 \| moderate	25.996 \| fine	78.806 \| fine	6.12 \| good	0.876 \| good	20.079 \| good	0.664 \| good
2025-12-07T09:00:00.000Z	82 \| moderate	25.617 \| fine	95.943 \| fine	13.479 \| good	0.683 \| good	17.601 \| good	0.582 \| good
2025-12-07T10:00:00.000Z	81 \| moderate	24.898 \| fine	45.917 \| good	10.524 \| good	0.554 \| good	18.161 \| good	0.538 \| good
2025-12-07T11:00:00.000Z	79 \| moderate	23.935 \| fine	68.911 \| fine	6.021 \| good	0.605 \| good	15.883 \| good	0.565 \| good
2025-12-07T12:00:00.000Z	75 \| moderate	21.518 \| fine	90.535 \| fine	6.923 \| good	0.612 \| good	15.66 \| good	0.654 \| good
2025-12-07T13:00:00.000Z	77 \| moderate	23.025 \| fine	74.606 \| fine	6.4 \| good	0.644 \| good	16.214 \| good	0.681 \| good
2025-12-07T14:00:00.000Z	71 \| moderate	19.697 \| fine	89.842 \| fine	8.403 \| good	0.688 \| good	16.027 \| good	0.833 \| good
2025-12-07T14:00:00.000Z	77 \| moderate	23.025 \| fine	74.606 \| fine	6.4 \| good	0.644 \| good	16.214 \| good	0.681 \| good
2025-12-07T15:00:00.000Z	73 \| moderate	21.314 \| fine	93.786 \| fine	19.194 \| good	3.863 \| good	8.601 \| good	0.284 \| good
2025-12-07T16:00:00.000Z	69 \| moderate	19.494 \| fine	85.944 \| fine	23.858 \| good	3.506 \| good	7.282 \| good	0.252 \| good
2025-12-07T17:00:00.000Z	66 \| moderate	16.765 \| fine	74.463 \| fine	26.817 \| good	3.149 \| good	5.963 \| good	0.221 \| good
2025-12-07T18:00:00.000Z	66 \| moderate	16.909 \| fine	75.192 \| fine	27.516 \| good	2.791 \| good	4.645 \| good	0.189 \| good
2025-12-07T19:00:00.000Z	66 \| moderate	16.812 \| fine	74.476 \| fine	27.699 \| good	3.025 \| good	5.401 \| good	0.191 \| good
2025-12-07T20:00:00.000Z	60 \| moderate	13.924 \| fine	62.198 \| fine	27.837 \| good	3.259 \| good	6.157 \| good	0.193 \| good
2025-12-07T21:00:00.000Z	66 \| moderate	17.062 \| fine	75.567 \| fine	22.13 \| good	3.492 \| good	6.913 \| good	0.195 \| good
2025-12-07T22:00:00.000Z	71 \| moderate	20.027 \| fine	87.664 \| fine	15.93 \| good	3.652 \| good	11.331 \| good	0.235 \| good
2025-12-07T23:00:00.000Z	79 \| moderate	23.664 \| fine	103.251 \| fine	10.524 \| good	3.811 \| good	15.749 \| good	0.274 \| good
2025-12-08T00:00:00.000Z	71 \| moderate	20.182 \| fine	88.903 \| fine	10.092 \| good	3.971 \| good	20.167 \| good	0.314 \| good
2025-12-08T01:00:00.000Z	75 \| moderate	21.626 \| fine	94.984 \| fine	11.111 \| good	4.231 \| good	20.516 \| good	0.32 \| good
2025-12-08T02:00:00.000Z	75 \| moderate	22.256 \| fine	97.211 \| fine	12.776 \| good	4.492 \| good	20.866 \| good	0.326 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	22.49 \| fine	98.268 \| fine	13.226 \| good	4.752 \| good	21.215 \| good	0.332 \| good
2025-12-08T04:00:00.000Z	71 \| moderate	20.29 \| fine	89.134 \| fine	13.594 \| good	4.788 \| good	18.875 \| good	0.315 \| good
2025-12-08T05:00:00.000Z	64 \| moderate	15.67 \| fine	69.389 \| fine	16.748 \| good	4.824 \| good	16.535 \| good	0.299 \| good
2025-12-08T06:00:00.000Z	56 \| moderate	11.829 \| good	52.225 \| good	21.552 \| good	4.86 \| good	14.196 \| good	0.283 \| good
2025-12-08T07:00:00.000Z	38 \| good	7.34 \| good	32.524 \| good	23.973 \| good	3.936 \| good	10.804 \| good	0.251 \| good
2025-12-08T08:00:00.000Z	24 \| good	2.633 \| good	10.938 \| good	25.636 \| good	3.013 \| good	7.413 \| good	0.219 \| good
2025-12-08T09:00:00.000Z	27 \| good	1.016 \| good	4.272 \| good	28.752 \| good	2.089 \| good	4.022 \| good	0.187 \| good
2025-12-08T10:00:00.000Z	26 \| good	0.883 \| good	3.443 \| good	27.621 \| good	1.67 \| good	3.904 \| good	0.179 \| good
2025-12-08T11:00:00.000Z	24 \| good	1.918 \| good	7.962 \| good	26.287 \| good	1.25 \| good	3.785 \| good	0.171 \| good
2025-12-08T12:00:00.000Z	25 \| good	2.586 \| good	10.4 \| good	26.657 \| good	0.831 \| good	3.666 \| good	0.163 \| good
2025-12-08T13:00:00.000Z	28 \| good	2.964 \| good	12.607 \| good	29.888 \| good	0.777 \| good	3.365 \| good	0.163 \| good
2025-12-08T14:00:00.000Z	27 \| good	3.691 \| good	16.287 \| good	29.437 \| good	0.724 \| good	3.065 \| good	0.163 \| good
2025-12-08T15:00:00.000Z	26 \| good	2.941 \| good	12.048 \| good	28.025 \| good	0.67 \| good	2.764 \| good	0.163 \| good
2025-12-08T16:00:00.000Z	25 \| good	2.928 \| good	12.048 \| good	26.658 \| good	0.7 \| good	2.716 \| good	0.159 \| good
2025-12-08T17:00:00.000Z	25 \| good	2.618 \| good	10.632 \| good	26.663 \| good	0.731 \| good	2.668 \| good	0.156 \| good
2025-12-08T18:00:00.000Z	25 \| good	2.267 \| good	9.143 \| good	27.106 \| good	0.761 \| good	2.619 \| good	0.152 \| good
2025-12-08T19:00:00.000Z	26 \| good	1.916 \| good	7.616 \| good	27.516 \| good	0.807 \| good	3.263 \| good	0.154 \| good
2025-12-08T20:00:00.000Z	26 \| good	0.746 \| good	2.926 \| good	27.885 \| good	0.853 \| good	3.907 \| good	0.155 \| good
2025-12-08T21:00:00.000Z	23 \| good	1.538 \| good	6.397 \| good	25.119 \| good	0.899 \| good	4.551 \| good	0.156 \| good
2025-12-08T22:00:00.000Z	22 \| good	3.626 \| good	16.172 \| good	17.875 \| good	1.027 \| good	6.704 \| good	0.175 \| good
2025-12-08T23:00:00.000Z	27 \| good	4.856 \| good	21.121 \| good	12.615 \| good	1.156 \| good	8.856 \| good	0.193 \| good
2025-12-09T00:00:00.000Z	22 \| good	4.053 \| good	17.681 \| good	12.162 \| good	1.284 \| good	11.009 \| good	0.211 \| good
2025-12-09T01:00:00.000Z	22 \| good	4.267 \| good	18.643 \| good	13.37 \| good	1.284 \| good	10.628 \| good	0.209 \| good
2025-12-09T02:00:00.000Z	27 \| good	4.942 \| good	21.71 \| good	13.574 \| good	1.284 \| good	10.248 \| good	0.207 \| good
2025-12-09T03:00:00.000Z	33 \| good	5.963 \| good	26.347 \| good	11.353 \| good	1.284 \| good	9.867 \| good	0.205 \| good
2025-12-09T04:00:00.000Z	38 \| good	6.964 \| good	31.01 \| good	10.363 \| good	1.223 \| good	8.951 \| good	0.199 \| good
2025-12-09T05:00:00.000Z	44 \| good	7.883 \| good	34.696 \| good	10.32 \| good	1.161 \| good	8.034 \| good	0.193 \| good
2025-12-09T06:00:00.000Z	49 \| good	8.603 \| good	37.638 \| good	10.294 \| good	1.1 \| good	7.118 \| good	0.186 \| good
2025-12-09T07:00:00.000Z	44 \| good	8.205 \| good	36.335 \| good	10.416 \| good	1.221 \| good	7.205 \| good	0.188 \| good
2025-12-09T08:00:00.000Z	44 \| good	8.026 \| good	35.216 \| good	8.896 \| good	1.343 \| good	7.292 \| good	0.19 \| good
2025-12-09T09:00:00.000Z	44 \| good	8.036 \| good	35.311 \| good	6.883 \| good	1.464 \| good	7.38 \| good	0.191 \| good
2025-12-09T10:00:00.000Z	44 \| good	8.431 \| good	36.99 \| good	6.712 \| good	1.781 \| good	9.557 \| good	0.21 \| good
2025-12-09T11:00:00.000Z	52 \| moderate	10.13 \| good	44.812 \| good	4.857 \| good	2.097 \| good	11.734 \| good	0.229 \| good
2025-12-09T12:00:00.000Z	56 \| moderate	11.944 \| good	53.343 \| good	2.821 \| good	2.414 \| good	13.911 \| good	0.247 \| good
2025-12-09T13:00:00.000Z	60 \| moderate	14.402 \| fine	64.155 \| fine	6.849 \| good	2.503 \| good	13.094 \| good	0.237 \| good
2025-12-09T14:00:00.000Z	62 \| moderate	14.928 \| fine	66.443 \| fine	10.152 \| good	2.592 \| good	12.277 \| good	0.226 \| 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?