What is the current level of PM10 in Horsham, Pennsylvania?

Horsham, Pennsylvania currently has a PM10 concentration of 37.83 μg/m3.

What is the current level of sulfur dioxide (SO2) in Horsham, Pennsylvania?

The current sulfur dioxide (SO2) concentration in Horsham, Pennsylvania is 0.497 ppb.

What is the current level of ozone (O3) in Horsham, Pennsylvania?

Horsham, Pennsylvania currently has an ozone (O3) concentration of 33.276 ppm.

What is the current level of nitrogen dioxide (NO2) in Horsham, Pennsylvania?

The current level of nitrogen dioxide (NO2) in Horsham, Pennsylvania is 7.593 ppb.

Current air quality index in Horsham, Pennsylvania today

Q: What is the PM2.5 concentration in Horsham, Pennsylvania right now?

Horsham, Pennsylvania currently has a PM2.5 concentration of 11.531 μg/m3.

Stay updated with real-time air quality in Horsham, 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

Horsham, Pennsylvania

Last updated: ... (Local time)

Common air pollutants in Horsham, Pennsylvania

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

11.53 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

37.83 μg/m³

155

255

425

605+

Ozone (O₃)

33.28 ppb

201

201+

Sulfur Dioxide (SO₂)

0.50 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.59 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Horsham, Pennsylvania

Get Live Pollen Counts

Horsham, Pennsylvania

Scroll To Air Quality Map

Track live Horsham, Pennsylvania air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-10T18:00:00.000Z	64 \| moderate	15.985 \| fine	70.87 \| fine	38.736 \| good	0.726 \| good	6.585 \| good	0.342 \| good
2026-08-10T19:00:00.000Z	60 \| moderate	13.517 \| fine	55.966 \| fine	47.421 \| good	0.895 \| good	5.342 \| good	0.29 \| good
2026-08-10T20:00:00.000Z	60 \| moderate	14.285 \| fine	63.82 \| fine	49.105 \| good	0.787 \| good	1.083 \| good	0.186 \| good
2026-08-10T21:00:00.000Z	60 \| moderate	14.05 \| fine	63.128 \| fine	49.789 \| good	0.72 \| good	1.258 \| good	0.183 \| good
2026-08-10T22:00:00.000Z	52 \| moderate	10.376 \| good	46.017 \| good	44.451 \| good	0.704 \| good	1.801 \| good	0.188 \| good
2026-08-10T23:00:00.000Z	49 \| good	8.563 \| good	37.893 \| good	41.2 \| good	0.697 \| good	4.719 \| good	0.211 \| good
2026-08-11T00:00:00.000Z	49 \| good	8.883 \| good	39.268 \| good	36.531 \| good	0.618 \| good	6.451 \| good	0.215 \| good
2026-08-11T01:00:00.000Z	38 \| good	7.381 \| good	32.241 \| good	32.477 \| good	0.642 \| good	8.24 \| good	0.225 \| good
2026-08-11T02:00:00.000Z	33 \| good	4.972 \| good	21.428 \| good	36.455 \| good	0.665 \| good	8.623 \| good	0.226 \| good
2026-08-11T03:00:00.000Z	34 \| good	3.194 \| good	13.666 \| good	36.891 \| good	0.688 \| good	8.612 \| good	0.226 \| good
2026-08-11T04:00:00.000Z	33 \| good	3.703 \| good	16.415 \| good	35.593 \| good	0.715 \| good	7.968 \| good	0.224 \| good
2026-08-11T05:00:00.000Z	29 \| good	4.883 \| good	21.243 \| good	31.385 \| good	0.744 \| good	6.8 \| good	0.219 \| good
2026-08-11T06:00:00.000Z	33 \| good	6.351 \| good	28.168 \| good	28.364 \| good	0.791 \| good	5.784 \| good	0.213 \| good
2026-08-11T07:00:00.000Z	49 \| good	8.838 \| good	35.787 \| good	31.171 \| good	0.937 \| good	4.583 \| good	0.262 \| good
2026-08-11T08:00:00.000Z	44 \| good	7.588 \| good	31.821 \| good	29.321 \| good	0.793 \| good	3.576 \| good	0.262 \| good
2026-08-11T09:00:00.000Z	44 \| good	7.876 \| good	26.946 \| good	28.357 \| good	0.479 \| good	4.733 \| good	0.24 \| good
2026-08-11T10:00:00.000Z	52 \| moderate	9.596 \| good	42.987 \| good	22.135 \| good	0.577 \| good	6.544 \| good	0.29 \| good
2026-08-11T11:00:00.000Z	49 \| good	9.2 \| good	43.666 \| good	27.671 \| good	0.684 \| good	9.512 \| good	0.312 \| good
2026-08-11T12:00:00.000Z	49 \| good	8.855 \| good	46.495 \| good	26.505 \| good	0.543 \| good	10.243 \| good	0.338 \| good
2026-08-11T13:00:00.000Z	52 \| moderate	9.723 \| good	54.339 \| good	27.318 \| good	0.54 \| good	10.544 \| good	0.338 \| good
2026-08-11T14:00:00.000Z	54 \| moderate	10.795 \| good	44.944 \| good	28.507 \| good	0.501 \| good	9.099 \| good	0.342 \| good
2026-08-11T15:00:00.000Z	54 \| moderate	11.454 \| good	56.485 \| fine	36.472 \| good	0.571 \| good	8.629 \| good	0.347 \| good
2026-08-11T16:00:00.000Z	60 \| moderate	14.342 \| fine	49.878 \| good	37.233 \| good	0.453 \| good	6.278 \| good	0.358 \| good
2026-08-11T17:00:00.000Z	62 \| moderate	14.983 \| fine	69.983 \| fine	38.71 \| good	0.566 \| good	6.822 \| good	0.358 \| good
2026-08-11T18:00:00.000Z	62 \| moderate	14.861 \| fine	52.415 \| good	43.707 \| good	0.586 \| good	6.331 \| good	0.358 \| good
2026-08-11T19:00:00.000Z	62 \| moderate	14.894 \| fine	47.044 \| good	48.931 \| good	0.743 \| good	8.923 \| good	0.405 \| good
2026-08-11T20:00:00.000Z	64 \| moderate	15.565 \| fine	69.645 \| fine	58.023 \| fine	0.468 \| good	7.435 \| good	0.405 \| good
2026-08-11T21:00:00.000Z	66 \| moderate	16.825 \| fine	68.325 \| fine	56.995 \| fine	0.468 \| good	6.199 \| good	0.358 \| good
2026-08-11T22:00:00.000Z	58 \| moderate	13.364 \| fine	57.245 \| fine	52.033 \| good	0.467 \| good	9.005 \| good	0.38 \| good
2026-08-11T23:00:00.000Z	60 \| moderate	14.029 \| fine	64.322 \| fine	52.134 \| good	0.468 \| good	7.474 \| good	0.407 \| good
2026-08-12T00:00:00.000Z	64 \| moderate	15.385 \| fine	63.187 \| fine	58.504 \| fine	0.538 \| good	9.181 \| good	0.407 \| good
2026-08-12T01:00:00.000Z	74 \| moderate	18.493 \| fine	68.998 \| fine	61.703 \| fine	0.535 \| good	9.906 \| good	0.407 \| good
2026-08-12T02:00:00.000Z	66 \| moderate	17.113 \| fine	59.485 \| fine	48.892 \| good	0.643 \| good	12.226 \| good	0.427 \| good
2026-08-12T03:00:00.000Z	49 \| good	9.118 \| good	40.603 \| good	30.567 \| good	0.822 \| good	12.699 \| good	0.307 \| good
2026-08-12T04:00:00.000Z	74 \| moderate	20.509 \| fine	101.105 \| fine	39.422 \| good	0.646 \| good	6.801 \| good	0.449 \| good
2026-08-12T05:00:00.000Z	66 \| moderate	16.974 \| fine	72.289 \| fine	39.872 \| good	0.601 \| good	6.91 \| good	0.38 \| good
2026-08-12T06:00:00.000Z	67 \| moderate	18.266 \| fine	57.733 \| fine	33.037 \| good	0.608 \| good	7.937 \| good	0.358 \| good
2026-08-12T07:00:00.000Z	67 \| moderate	17.922 \| fine	59.438 \| fine	35.985 \| good	0.591 \| good	9.55 \| good	0.336 \| good
2026-08-12T08:00:00.000Z	62 \| moderate	15.411 \| fine	66.619 \| fine	31.079 \| good	0.672 \| good	7.165 \| good	0.283 \| good
2026-08-12T09:00:00.000Z	60 \| moderate	14.466 \| fine	63.178 \| fine	31.397 \| good	0.408 \| good	6.395 \| good	0.305 \| good
2026-08-12T10:00:00.000Z	62 \| moderate	14.608 \| fine	65.798 \| fine	28.653 \| good	0.43 \| good	7.535 \| good	0.327 \| good
2026-08-12T11:00:00.000Z	64 \| moderate	15.53 \| fine	61.689 \| fine	29.558 \| good	0.159 \| good	10.375 \| good	0.396 \| good
2026-08-12T12:00:00.000Z	58 \| moderate	13.315 \| fine	56.832 \| fine	25.618 \| good	0.728 \| good	10.604 \| good	0.396 \| good
2026-08-12T13:00:00.000Z	58 \| moderate	13.218 \| fine	47.789 \| good	28.825 \| good	0.778 \| good	16.048 \| good	0.418 \| good
2026-08-12T14:00:00.000Z	52 \| moderate	10.239 \| good	47.602 \| good	31.67 \| good	0.577 \| good	11.083 \| good	0.374 \| good
2026-08-12T15:00:00.000Z	58 \| moderate	13.13 \| fine	36.364 \| good	29.643 \| good	0.571 \| good	8.968 \| good	0.327 \| good
2026-08-12T16:00:00.000Z	56 \| moderate	11.531 \| good	37.83 \| good	33.276 \| good	0.497 \| good	7.593 \| good	0.278 \| good
2026-08-12T17:00:00.000Z	52 \| moderate	9.97 \| good	29.419 \| good	37.99 \| good	0.447 \| good	5.144 \| good	0.256 \| good
2026-08-12T17:00:00.000Z	56 \| moderate	11.531 \| good	37.83 \| good	33.276 \| good	0.497 \| good	7.593 \| good	0.278 \| good
2026-08-12T17:00:00.000Z	58 \| moderate	8.294 \| good	36.245 \| good	56.726 \| fine	0.511 \| good	1.055 \| good	0.164 \| good
2026-08-12T18:00:00.000Z	67 \| moderate	10.064 \| good	44.527 \| good	59.909 \| fine	0.51 \| good	1.013 \| good	0.17 \| good
2026-08-12T19:00:00.000Z	64 \| moderate	10.857 \| good	48.114 \| good	58.524 \| fine	0.533 \| good	1.083 \| good	0.175 \| good
2026-08-12T20:00:00.000Z	52 \| moderate	10.428 \| good	46.25 \| good	55.286 \| fine	0.573 \| good	1.211 \| good	0.181 \| good
2026-08-12T21:00:00.000Z	52 \| moderate	10.016 \| good	44.374 \| good	50.788 \| good	0.631 \| good	1.476 \| good	0.186 \| good
2026-08-12T22:00:00.000Z	56 \| moderate	12.202 \| fine	54.635 \| good	47.988 \| good	0.694 \| good	2.244 \| good	0.196 \| good
2026-08-12T23:00:00.000Z	60 \| moderate	14.148 \| fine	63.164 \| fine	45.524 \| good	0.718 \| good	7.437 \| good	0.245 \| good
2026-08-13T00:00:00.000Z	56 \| moderate	12.369 \| fine	55.207 \| fine	44.229 \| good	0.802 \| good	17.954 \| good	0.322 \| good
2026-08-13T01:00:00.000Z	58 \| moderate	13.014 \| fine	58.885 \| fine	44.2 \| good	0.878 \| good	28.756 \| good	0.392 \| good
2026-08-13T02:00:00.000Z	60 \| moderate	14.243 \| fine	63.749 \| fine	39.587 \| good	0.889 \| good	29.944 \| good	0.401 \| good
2026-08-13T03:00:00.000Z	60 \| moderate	13.565 \| fine	60.702 \| fine	33.283 \| good	0.909 \| good	27.984 \| good	0.392 \| good
2026-08-13T04:00:00.000Z	56 \| moderate	11.746 \| good	52.224 \| good	33.43 \| good	0.857 \| good	22.521 \| good	0.357 \| good
2026-08-13T05:00:00.000Z	54 \| moderate	10.67 \| good	47.203 \| good	31.326 \| good	0.807 \| good	14.094 \| good	0.298 \| good
2026-08-13T06:00:00.000Z	54 \| moderate	11.392 \| good	50.807 \| good	26.678 \| good	0.749 \| good	11.208 \| good	0.274 \| good
2026-08-13T07:00:00.000Z	54 \| moderate	10.863 \| good	47.929 \| good	23.35 \| good	0.723 \| good	9.496 \| good	0.259 \| good
2026-08-13T08:00:00.000Z	49 \| good	9.475 \| good	42.099 \| good	22.31 \| good	0.724 \| good	7.935 \| good	0.246 \| good
2026-08-13T09:00:00.000Z	38 \| good	7.417 \| good	32.491 \| good	23.359 \| good	0.761 \| good	6.667 \| good	0.234 \| good
2026-08-13T10:00:00.000Z	33 \| good	5.776 \| good	25.315 \| good	24.071 \| good	0.809 \| good	5.975 \| good	0.227 \| good
2026-08-13T11:00:00.000Z	33 \| good	6.175 \| good	27.38 \| good	24.004 \| good	0.824 \| good	5.787 \| good	0.226 \| good
2026-08-13T12:00:00.000Z	27 \| good	5.382 \| good	23.048 \| good	28.211 \| good	0.874 \| good	4.111 \| good	0.218 \| good
2026-08-13T13:00:00.000Z	38 \| good	7.266 \| good	32.207 \| good	32.208 \| good	0.824 \| good	3.048 \| good	0.215 \| good
2026-08-13T14:00:00.000Z	49 \| good	8.606 \| good	37.879 \| good	38.219 \| good	0.745 \| good	2.555 \| good	0.216 \| good
2026-08-13T15:00:00.000Z	49 \| good	8.682 \| good	38.416 \| good	41.732 \| good	0.691 \| good	2.044 \| good	0.215 \| good
2026-08-13T16:00:00.000Z	49 \| good	9.366 \| good	41.893 \| good	44.363 \| good	0.671 \| good	1.841 \| good	0.216 \| good
2026-08-13T17:00:00.000Z	54 \| moderate	10.759 \| good	47.605 \| good	45.209 \| good	0.656 \| good	1.637 \| good	0.217 \| good
2026-08-13T18:00:00.000Z	56 \| moderate	12.074 \| good	53.73 \| good	45.169 \| good	0.623 \| good	1.433 \| good	0.219 \| good
2026-08-13T19:00:00.000Z	56 \| moderate	12.201 \| fine	54.781 \| good	43.057 \| good	0.608 \| good	1.338 \| good	0.222 \| good
2026-08-13T20:00:00.000Z	56 \| moderate	12.033 \| good	54.119 \| good	41.858 \| good	0.591 \| good	1.31 \| good	0.225 \| good
2026-08-13T21:00:00.000Z	56 \| moderate	12.11 \| fine	54.01 \| good	41.754 \| good	0.617 \| good	1.583 \| good	0.228 \| good
2026-08-13T22:00:00.000Z	56 \| moderate	11.565 \| good	51.216 \| good	41.831 \| good	0.621 \| good	1.983 \| good	0.234 \| good
2026-08-13T23:00:00.000Z	52 \| moderate	10.421 \| good	46.022 \| good	37.744 \| good	0.648 \| good	3.957 \| good	0.251 \| good
2026-08-14T00:00:00.000Z	38 \| good	7.054 \| good	31.33 \| good	31.765 \| good	0.696 \| good	9.576 \| good	0.29 \| good
2026-08-14T01:00:00.000Z	38 \| good	6.95 \| good	30.642 \| good	26.882 \| good	0.757 \| good	13.85 \| good	0.316 \| good
2026-08-14T02:00:00.000Z	38 \| good	6.618 \| good	29.273 \| good	21.749 \| good	0.838 \| good	14.337 \| good	0.318 \| good
2026-08-14T03:00:00.000Z	33 \| good	6.142 \| good	26.868 \| good	18.465 \| good	0.921 \| good	15.837 \| good	0.327 \| good
2026-08-14T04:00:00.000Z	33 \| good	5.529 \| good	23.917 \| good	15.96 \| good	0.973 \| good	17.285 \| good	0.341 \| good
2026-08-14T05:00:00.000Z	27 \| good	5.255 \| good	22.698 \| good	13.131 \| good	0.991 \| good	16.553 \| good	0.344 \| good
2026-08-14T06:00:00.000Z	27 \| good	4.755 \| good	20.604 \| good	13.056 \| good	1.009 \| good	15.749 \| good	0.341 \| good
2026-08-14T07:00:00.000Z	22 \| good	4.343 \| good	18.906 \| good	13.178 \| good	1.035 \| good	15.848 \| good	0.342 \| good
2026-08-14T08:00:00.000Z	22 \| good	3.897 \| good	17.108 \| good	11.631 \| good	1.026 \| good	15.291 \| good	0.338 \| good
2026-08-14T09:00:00.000Z	27 \| good	4.854 \| good	20.845 \| good	5.417 \| good	0.963 \| good	13.743 \| good	0.323 \| good
2026-08-14T10:00:00.000Z	27 \| good	4.749 \| good	20.77 \| good	6.68 \| good	0.903 \| good	11.358 \| good	0.3 \| good
2026-08-14T11:00:00.000Z	22 \| good	4.416 \| good	19.056 \| good	8.621 \| good	0.792 \| good	8.674 \| good	0.275 \| good
2026-08-14T12:00:00.000Z	16 \| good	3.354 \| good	14.715 \| good	15.458 \| good	0.675 \| good	7.074 \| good	0.26 \| good
2026-08-14T13:00:00.000Z	22 \| good	3.99 \| good	17.459 \| good	22.308 \| good	0.643 \| good	4.804 \| good	0.225 \| good
2026-08-14T14:00:00.000Z	28 \| good	4.489 \| good	19.497 \| good	29.788 \| good	0.662 \| good	2.869 \| good	0.199 \| good
2026-08-14T15:00:00.000Z	31 \| good	4.642 \| good	20.488 \| good	33.514 \| good	0.605 \| good	1.809 \| good	0.186 \| good
2026-08-14T16:00:00.000Z	34 \| good	5.482 \| good	23.518 \| good	37.046 \| good	0.567 \| good	1.288 \| good	0.18 \| good

Horsham

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Horsham, Pennsylvania

0.34ppm

How accurate is Pennsylvania, USA air quality data?

The air quality data for Pennsylvania, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for Horsham, Pennsylvania get updated?

Air quality updates for Horsham, Pennsylvania are available every hour.

What time in the past 24 hours saw the poorest air quality in Horsham, Pennsylvania?

Horsham, Pennsylvania experienced its worst air quality at 04:00:00, 2026-08-12.

When was air quality in Horsham, Pennsylvania the best over the past 24 hours?

The best air quality in Horsham, Pennsylvania was observed at 03:00:00 on 2026-08-12.

What is the air quality in Horsham, Pennsylvania right now?

The air quality in Horsham, Pennsylvania right now is Moderate, with an AQI of 56.

What pollutant is most frequently found in Horsham, Pennsylvania?

In Horsham, Pennsylvania, PM2.5 is the most frequently found pollutant.

What can I do if the air quality in Horsham, Pennsylvania is poor?

When air quality in Horsham, Pennsylvania is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Horsham, Pennsylvania right now?

Horsham, Pennsylvania currently has a PM_2.5 concentration of 11.531 μg/m³.

What is the current level of PM₁₀ in Horsham, Pennsylvania?

Horsham, Pennsylvania currently has a PM₁₀ concentration of 37.83 μg/m³.

What is the current level of carbon monoxide (CO) in Horsham, Pennsylvania?

The current carbon monoxide (CO) level in Horsham, Pennsylvania is 0.278 ppm.

What is the current level of sulfur dioxide (SO₂) in Horsham, Pennsylvania?

The current sulfur dioxide (SO₂) concentration in Horsham, Pennsylvania is 0.497 ppb.

What is the current level of ozone (O₃) in Horsham, Pennsylvania?

Horsham, Pennsylvania currently has an ozone (O₃) concentration of 33.276 ppm.

What is the current level of nitrogen dioxide (NO₂) in Horsham, Pennsylvania?

The current level of nitrogen dioxide (NO₂) in Horsham, Pennsylvania is 7.593 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-08-10T18:00:00.000Z	64 \| moderate	15.985 \| fine	70.87 \| fine	38.736 \| good	0.726 \| good	6.585 \| good	0.342 \| good
2026-08-10T19:00:00.000Z	60 \| moderate	13.517 \| fine	55.966 \| fine	47.421 \| good	0.895 \| good	5.342 \| good	0.29 \| good
2026-08-10T20:00:00.000Z	60 \| moderate	14.285 \| fine	63.82 \| fine	49.105 \| good	0.787 \| good	1.083 \| good	0.186 \| good
2026-08-10T21:00:00.000Z	60 \| moderate	14.05 \| fine	63.128 \| fine	49.789 \| good	0.72 \| good	1.258 \| good	0.183 \| good
2026-08-10T22:00:00.000Z	52 \| moderate	10.376 \| good	46.017 \| good	44.451 \| good	0.704 \| good	1.801 \| good	0.188 \| good
2026-08-10T23:00:00.000Z	49 \| good	8.563 \| good	37.893 \| good	41.2 \| good	0.697 \| good	4.719 \| good	0.211 \| good
2026-08-11T00:00:00.000Z	49 \| good	8.883 \| good	39.268 \| good	36.531 \| good	0.618 \| good	6.451 \| good	0.215 \| good
2026-08-11T01:00:00.000Z	38 \| good	7.381 \| good	32.241 \| good	32.477 \| good	0.642 \| good	8.24 \| good	0.225 \| good
2026-08-11T02:00:00.000Z	33 \| good	4.972 \| good	21.428 \| good	36.455 \| good	0.665 \| good	8.623 \| good	0.226 \| good
2026-08-11T03:00:00.000Z	34 \| good	3.194 \| good	13.666 \| good	36.891 \| good	0.688 \| good	8.612 \| good	0.226 \| good
2026-08-11T04:00:00.000Z	33 \| good	3.703 \| good	16.415 \| good	35.593 \| good	0.715 \| good	7.968 \| good	0.224 \| good
2026-08-11T05:00:00.000Z	29 \| good	4.883 \| good	21.243 \| good	31.385 \| good	0.744 \| good	6.8 \| good	0.219 \| good
2026-08-11T06:00:00.000Z	33 \| good	6.351 \| good	28.168 \| good	28.364 \| good	0.791 \| good	5.784 \| good	0.213 \| good
2026-08-11T07:00:00.000Z	49 \| good	8.838 \| good	35.787 \| good	31.171 \| good	0.937 \| good	4.583 \| good	0.262 \| good
2026-08-11T08:00:00.000Z	44 \| good	7.588 \| good	31.821 \| good	29.321 \| good	0.793 \| good	3.576 \| good	0.262 \| good
2026-08-11T09:00:00.000Z	44 \| good	7.876 \| good	26.946 \| good	28.357 \| good	0.479 \| good	4.733 \| good	0.24 \| good
2026-08-11T10:00:00.000Z	52 \| moderate	9.596 \| good	42.987 \| good	22.135 \| good	0.577 \| good	6.544 \| good	0.29 \| good
2026-08-11T11:00:00.000Z	49 \| good	9.2 \| good	43.666 \| good	27.671 \| good	0.684 \| good	9.512 \| good	0.312 \| good
2026-08-11T12:00:00.000Z	49 \| good	8.855 \| good	46.495 \| good	26.505 \| good	0.543 \| good	10.243 \| good	0.338 \| good
2026-08-11T13:00:00.000Z	52 \| moderate	9.723 \| good	54.339 \| good	27.318 \| good	0.54 \| good	10.544 \| good	0.338 \| good
2026-08-11T14:00:00.000Z	54 \| moderate	10.795 \| good	44.944 \| good	28.507 \| good	0.501 \| good	9.099 \| good	0.342 \| good
2026-08-11T15:00:00.000Z	54 \| moderate	11.454 \| good	56.485 \| fine	36.472 \| good	0.571 \| good	8.629 \| good	0.347 \| good
2026-08-11T16:00:00.000Z	60 \| moderate	14.342 \| fine	49.878 \| good	37.233 \| good	0.453 \| good	6.278 \| good	0.358 \| good
2026-08-11T17:00:00.000Z	62 \| moderate	14.983 \| fine	69.983 \| fine	38.71 \| good	0.566 \| good	6.822 \| good	0.358 \| good
2026-08-11T18:00:00.000Z	62 \| moderate	14.861 \| fine	52.415 \| good	43.707 \| good	0.586 \| good	6.331 \| good	0.358 \| good
2026-08-11T19:00:00.000Z	62 \| moderate	14.894 \| fine	47.044 \| good	48.931 \| good	0.743 \| good	8.923 \| good	0.405 \| good
2026-08-11T20:00:00.000Z	64 \| moderate	15.565 \| fine	69.645 \| fine	58.023 \| fine	0.468 \| good	7.435 \| good	0.405 \| good
2026-08-11T21:00:00.000Z	66 \| moderate	16.825 \| fine	68.325 \| fine	56.995 \| fine	0.468 \| good	6.199 \| good	0.358 \| good
2026-08-11T22:00:00.000Z	58 \| moderate	13.364 \| fine	57.245 \| fine	52.033 \| good	0.467 \| good	9.005 \| good	0.38 \| good
2026-08-11T23:00:00.000Z	60 \| moderate	14.029 \| fine	64.322 \| fine	52.134 \| good	0.468 \| good	7.474 \| good	0.407 \| good
2026-08-12T00:00:00.000Z	64 \| moderate	15.385 \| fine	63.187 \| fine	58.504 \| fine	0.538 \| good	9.181 \| good	0.407 \| good
2026-08-12T01:00:00.000Z	74 \| moderate	18.493 \| fine	68.998 \| fine	61.703 \| fine	0.535 \| good	9.906 \| good	0.407 \| good
2026-08-12T02:00:00.000Z	66 \| moderate	17.113 \| fine	59.485 \| fine	48.892 \| good	0.643 \| good	12.226 \| good	0.427 \| good
2026-08-12T03:00:00.000Z	49 \| good	9.118 \| good	40.603 \| good	30.567 \| good	0.822 \| good	12.699 \| good	0.307 \| good
2026-08-12T04:00:00.000Z	74 \| moderate	20.509 \| fine	101.105 \| fine	39.422 \| good	0.646 \| good	6.801 \| good	0.449 \| good
2026-08-12T05:00:00.000Z	66 \| moderate	16.974 \| fine	72.289 \| fine	39.872 \| good	0.601 \| good	6.91 \| good	0.38 \| good
2026-08-12T06:00:00.000Z	67 \| moderate	18.266 \| fine	57.733 \| fine	33.037 \| good	0.608 \| good	7.937 \| good	0.358 \| good
2026-08-12T07:00:00.000Z	67 \| moderate	17.922 \| fine	59.438 \| fine	35.985 \| good	0.591 \| good	9.55 \| good	0.336 \| good
2026-08-12T08:00:00.000Z	62 \| moderate	15.411 \| fine	66.619 \| fine	31.079 \| good	0.672 \| good	7.165 \| good	0.283 \| good
2026-08-12T09:00:00.000Z	60 \| moderate	14.466 \| fine	63.178 \| fine	31.397 \| good	0.408 \| good	6.395 \| good	0.305 \| good
2026-08-12T10:00:00.000Z	62 \| moderate	14.608 \| fine	65.798 \| fine	28.653 \| good	0.43 \| good	7.535 \| good	0.327 \| good
2026-08-12T11:00:00.000Z	64 \| moderate	15.53 \| fine	61.689 \| fine	29.558 \| good	0.159 \| good	10.375 \| good	0.396 \| good
2026-08-12T12:00:00.000Z	58 \| moderate	13.315 \| fine	56.832 \| fine	25.618 \| good	0.728 \| good	10.604 \| good	0.396 \| good
2026-08-12T13:00:00.000Z	58 \| moderate	13.218 \| fine	47.789 \| good	28.825 \| good	0.778 \| good	16.048 \| good	0.418 \| good
2026-08-12T14:00:00.000Z	52 \| moderate	10.239 \| good	47.602 \| good	31.67 \| good	0.577 \| good	11.083 \| good	0.374 \| good
2026-08-12T15:00:00.000Z	58 \| moderate	13.13 \| fine	36.364 \| good	29.643 \| good	0.571 \| good	8.968 \| good	0.327 \| good
2026-08-12T16:00:00.000Z	56 \| moderate	11.531 \| good	37.83 \| good	33.276 \| good	0.497 \| good	7.593 \| good	0.278 \| good
2026-08-12T17:00:00.000Z	52 \| moderate	9.97 \| good	29.419 \| good	37.99 \| good	0.447 \| good	5.144 \| good	0.256 \| good
2026-08-12T17:00:00.000Z	56 \| moderate	11.531 \| good	37.83 \| good	33.276 \| good	0.497 \| good	7.593 \| good	0.278 \| good
2026-08-12T17:00:00.000Z	58 \| moderate	8.294 \| good	36.245 \| good	56.726 \| fine	0.511 \| good	1.055 \| good	0.164 \| good
2026-08-12T18:00:00.000Z	67 \| moderate	10.064 \| good	44.527 \| good	59.909 \| fine	0.51 \| good	1.013 \| good	0.17 \| good
2026-08-12T19:00:00.000Z	64 \| moderate	10.857 \| good	48.114 \| good	58.524 \| fine	0.533 \| good	1.083 \| good	0.175 \| good
2026-08-12T20:00:00.000Z	52 \| moderate	10.428 \| good	46.25 \| good	55.286 \| fine	0.573 \| good	1.211 \| good	0.181 \| good
2026-08-12T21:00:00.000Z	52 \| moderate	10.016 \| good	44.374 \| good	50.788 \| good	0.631 \| good	1.476 \| good	0.186 \| good
2026-08-12T22:00:00.000Z	56 \| moderate	12.202 \| fine	54.635 \| good	47.988 \| good	0.694 \| good	2.244 \| good	0.196 \| good
2026-08-12T23:00:00.000Z	60 \| moderate	14.148 \| fine	63.164 \| fine	45.524 \| good	0.718 \| good	7.437 \| good	0.245 \| good
2026-08-13T00:00:00.000Z	56 \| moderate	12.369 \| fine	55.207 \| fine	44.229 \| good	0.802 \| good	17.954 \| good	0.322 \| good
2026-08-13T01:00:00.000Z	58 \| moderate	13.014 \| fine	58.885 \| fine	44.2 \| good	0.878 \| good	28.756 \| good	0.392 \| good
2026-08-13T02:00:00.000Z	60 \| moderate	14.243 \| fine	63.749 \| fine	39.587 \| good	0.889 \| good	29.944 \| good	0.401 \| good
2026-08-13T03:00:00.000Z	60 \| moderate	13.565 \| fine	60.702 \| fine	33.283 \| good	0.909 \| good	27.984 \| good	0.392 \| good
2026-08-13T04:00:00.000Z	56 \| moderate	11.746 \| good	52.224 \| good	33.43 \| good	0.857 \| good	22.521 \| good	0.357 \| good
2026-08-13T05:00:00.000Z	54 \| moderate	10.67 \| good	47.203 \| good	31.326 \| good	0.807 \| good	14.094 \| good	0.298 \| good
2026-08-13T06:00:00.000Z	54 \| moderate	11.392 \| good	50.807 \| good	26.678 \| good	0.749 \| good	11.208 \| good	0.274 \| good
2026-08-13T07:00:00.000Z	54 \| moderate	10.863 \| good	47.929 \| good	23.35 \| good	0.723 \| good	9.496 \| good	0.259 \| good
2026-08-13T08:00:00.000Z	49 \| good	9.475 \| good	42.099 \| good	22.31 \| good	0.724 \| good	7.935 \| good	0.246 \| good
2026-08-13T09:00:00.000Z	38 \| good	7.417 \| good	32.491 \| good	23.359 \| good	0.761 \| good	6.667 \| good	0.234 \| good
2026-08-13T10:00:00.000Z	33 \| good	5.776 \| good	25.315 \| good	24.071 \| good	0.809 \| good	5.975 \| good	0.227 \| good
2026-08-13T11:00:00.000Z	33 \| good	6.175 \| good	27.38 \| good	24.004 \| good	0.824 \| good	5.787 \| good	0.226 \| good
2026-08-13T12:00:00.000Z	27 \| good	5.382 \| good	23.048 \| good	28.211 \| good	0.874 \| good	4.111 \| good	0.218 \| good
2026-08-13T13:00:00.000Z	38 \| good	7.266 \| good	32.207 \| good	32.208 \| good	0.824 \| good	3.048 \| good	0.215 \| good
2026-08-13T14:00:00.000Z	49 \| good	8.606 \| good	37.879 \| good	38.219 \| good	0.745 \| good	2.555 \| good	0.216 \| good
2026-08-13T15:00:00.000Z	49 \| good	8.682 \| good	38.416 \| good	41.732 \| good	0.691 \| good	2.044 \| good	0.215 \| good
2026-08-13T16:00:00.000Z	49 \| good	9.366 \| good	41.893 \| good	44.363 \| good	0.671 \| good	1.841 \| good	0.216 \| good
2026-08-13T17:00:00.000Z	54 \| moderate	10.759 \| good	47.605 \| good	45.209 \| good	0.656 \| good	1.637 \| good	0.217 \| good
2026-08-13T18:00:00.000Z	56 \| moderate	12.074 \| good	53.73 \| good	45.169 \| good	0.623 \| good	1.433 \| good	0.219 \| good
2026-08-13T19:00:00.000Z	56 \| moderate	12.201 \| fine	54.781 \| good	43.057 \| good	0.608 \| good	1.338 \| good	0.222 \| good
2026-08-13T20:00:00.000Z	56 \| moderate	12.033 \| good	54.119 \| good	41.858 \| good	0.591 \| good	1.31 \| good	0.225 \| good
2026-08-13T21:00:00.000Z	56 \| moderate	12.11 \| fine	54.01 \| good	41.754 \| good	0.617 \| good	1.583 \| good	0.228 \| good
2026-08-13T22:00:00.000Z	56 \| moderate	11.565 \| good	51.216 \| good	41.831 \| good	0.621 \| good	1.983 \| good	0.234 \| good
2026-08-13T23:00:00.000Z	52 \| moderate	10.421 \| good	46.022 \| good	37.744 \| good	0.648 \| good	3.957 \| good	0.251 \| good
2026-08-14T00:00:00.000Z	38 \| good	7.054 \| good	31.33 \| good	31.765 \| good	0.696 \| good	9.576 \| good	0.29 \| good
2026-08-14T01:00:00.000Z	38 \| good	6.95 \| good	30.642 \| good	26.882 \| good	0.757 \| good	13.85 \| good	0.316 \| good
2026-08-14T02:00:00.000Z	38 \| good	6.618 \| good	29.273 \| good	21.749 \| good	0.838 \| good	14.337 \| good	0.318 \| good
2026-08-14T03:00:00.000Z	33 \| good	6.142 \| good	26.868 \| good	18.465 \| good	0.921 \| good	15.837 \| good	0.327 \| good
2026-08-14T04:00:00.000Z	33 \| good	5.529 \| good	23.917 \| good	15.96 \| good	0.973 \| good	17.285 \| good	0.341 \| good
2026-08-14T05:00:00.000Z	27 \| good	5.255 \| good	22.698 \| good	13.131 \| good	0.991 \| good	16.553 \| good	0.344 \| good
2026-08-14T06:00:00.000Z	27 \| good	4.755 \| good	20.604 \| good	13.056 \| good	1.009 \| good	15.749 \| good	0.341 \| good
2026-08-14T07:00:00.000Z	22 \| good	4.343 \| good	18.906 \| good	13.178 \| good	1.035 \| good	15.848 \| good	0.342 \| good
2026-08-14T08:00:00.000Z	22 \| good	3.897 \| good	17.108 \| good	11.631 \| good	1.026 \| good	15.291 \| good	0.338 \| good
2026-08-14T09:00:00.000Z	27 \| good	4.854 \| good	20.845 \| good	5.417 \| good	0.963 \| good	13.743 \| good	0.323 \| good
2026-08-14T10:00:00.000Z	27 \| good	4.749 \| good	20.77 \| good	6.68 \| good	0.903 \| good	11.358 \| good	0.3 \| good
2026-08-14T11:00:00.000Z	22 \| good	4.416 \| good	19.056 \| good	8.621 \| good	0.792 \| good	8.674 \| good	0.275 \| good
2026-08-14T12:00:00.000Z	16 \| good	3.354 \| good	14.715 \| good	15.458 \| good	0.675 \| good	7.074 \| good	0.26 \| good
2026-08-14T13:00:00.000Z	22 \| good	3.99 \| good	17.459 \| good	22.308 \| good	0.643 \| good	4.804 \| good	0.225 \| good
2026-08-14T14:00:00.000Z	28 \| good	4.489 \| good	19.497 \| good	29.788 \| good	0.662 \| good	2.869 \| good	0.199 \| good
2026-08-14T15:00:00.000Z	31 \| good	4.642 \| good	20.488 \| good	33.514 \| good	0.605 \| good	1.809 \| good	0.186 \| good
2026-08-14T16:00:00.000Z	34 \| good	5.482 \| good	23.518 \| good	37.046 \| good	0.567 \| good	1.288 \| good	0.18 \| good

Current air quality index in Horsham, Pennsylvania today

Common air pollutants in Horsham, Pennsylvania

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Real-time air quality map: Monitor AQI near Horsham, Pennsylvania

Air quality in nearby cities

Upper Moreland, Pennsylvania

Warminster, Pennsylvania

Upper Dublin, Pennsylvania

Abington, Pennsylvania

Lower Moreland, Pennsylvania

Upper Southampton, Pennsylvania

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Frequently asked questions

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 concentration in Horsham, Pennsylvania right now?

What is the current level of PM₁₀ in Horsham, Pennsylvania?

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What is the current level of ozone (O₃) in Horsham, Pennsylvania?

What is the current level of nitrogen dioxide (NO₂) in Horsham, Pennsylvania?