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

Horsham, Pennsylvania currently has a PM10 concentration of 24.372 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Horsham, Pennsylvania is 0.624 ppb.

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

Horsham, Pennsylvania currently has an ozone (O3) concentration of 10.503 ppm.

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

The current level of nitrogen dioxide (NO2) in Horsham, Pennsylvania is 10.498 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 5.533 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)

Good

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)

5.53 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

24.37 μg/m³

155

255

425

605+

Ozone (O₃)

10.50 ppb

201

201+

Sulfur Dioxide (SO₂)

0.62 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

10.50 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.39 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
2026-09-05T14:00:00.000Z	38 \| good	6.557 \| good	24.611 \| good	25.083 \| good	0.918 \| good	6.762 \| good	0.28 \| good
2026-09-05T15:00:00.000Z	38 \| good	6.939 \| good	30.002 \| good	29.788 \| good	0.98 \| good	5.03 \| good	0.28 \| good
2026-09-05T16:00:00.000Z	27 \| good	5.396 \| good	22.935 \| good	26.308 \| good	0.882 \| good	4.446 \| good	0.28 \| good
2026-09-05T17:00:00.000Z	30 \| good	5.145 \| good	19.249 \| good	31.584 \| good	0.742 \| good	3.495 \| good	0.257 \| good
2026-09-05T18:00:00.000Z	28 \| good	4.766 \| good	25.547 \| good	29.681 \| good	0.782 \| good	3.261 \| good	0.262 \| good
2026-09-05T19:00:00.000Z	33 \| good	4.523 \| good	22.127 \| good	36.074 \| good	0.844 \| good	3.143 \| good	0.262 \| good
2026-09-05T20:00:00.000Z	33 \| good	4.152 \| good	16.941 \| good	36.165 \| good	0.647 \| good	3.027 \| good	0.262 \| good
2026-09-05T21:00:00.000Z	31 \| good	3.884 \| good	19.117 \| good	33.633 \| good	0.656 \| good	3.179 \| good	0.262 \| good
2026-09-05T22:00:00.000Z	32 \| good	3.248 \| good	17.798 \| good	34.793 \| good	0.567 \| good	3.507 \| good	0.262 \| good
2026-09-05T23:00:00.000Z	30 \| good	3.315 \| good	15.765 \| good	32.357 \| good	0.661 \| good	4.166 \| good	0.308 \| good
2026-09-06T00:00:00.000Z	30 \| good	3.631 \| good	18.018 \| good	32.494 \| good	0.695 \| good	4.925 \| good	0.327 \| good
2026-09-06T01:00:00.000Z	24 \| good	3.019 \| good	14.792 \| good	25.743 \| good	0.638 \| good	10.353 \| good	0.331 \| good
2026-09-06T02:00:00.000Z	22 \| good	3.845 \| good	14.626 \| good	24 \| good	0.637 \| good	10.652 \| good	0.381 \| good
2026-09-06T03:00:00.000Z	22 \| good	3.969 \| good	17.004 \| good	14.761 \| good	0.372 \| good	11.15 \| good	0.215 \| good
2026-09-06T04:00:00.000Z	22 \| good	4.495 \| good	21.516 \| good	21.045 \| good	0.54 \| good	9.946 \| good	0.4 \| good
2026-09-06T05:00:00.000Z	22 \| good	3.918 \| good	18.976 \| good	18.095 \| good	0.596 \| good	8.827 \| good	0.358 \| good
2026-09-06T06:00:00.000Z	27 \| good	4.974 \| good	21.794 \| good	13.448 \| good	0.67 \| good	7.577 \| good	0.388 \| good
2026-09-06T07:00:00.000Z	27 \| good	4.998 \| good	20.439 \| good	11.095 \| good	0.576 \| good	5.544 \| good	0.335 \| good
2026-09-06T08:00:00.000Z	27 \| good	4.731 \| good	17.704 \| good	12.137 \| good	0.584 \| good	4.827 \| good	0.353 \| good
2026-09-06T09:00:00.000Z	27 \| good	4.902 \| good	17.961 \| good	16.645 \| good	0.551 \| good	3.781 \| good	0.33 \| good
2026-09-06T10:00:00.000Z	22 \| good	4.093 \| good	17.29 \| good	15.124 \| good	0.58 \| good	4.043 \| good	0.307 \| good
2026-09-06T11:00:00.000Z	27 \| good	4.892 \| good	21.569 \| good	14.13 \| good	0.491 \| good	4.157 \| good	0.307 \| good
2026-09-06T12:00:00.000Z	27 \| good	5.06 \| good	20.711 \| good	15.822 \| good	0.532 \| good	4.137 \| good	0.311 \| good
2026-09-06T13:00:00.000Z	27 \| good	4.681 \| good	22.12 \| good	15.508 \| good	0.615 \| good	4.467 \| good	0.311 \| good
2026-09-06T14:00:00.000Z	27 \| good	4.904 \| good	18.039 \| good	19.558 \| good	0.444 \| good	3.823 \| good	0.311 \| good
2026-09-06T15:00:00.000Z	33 \| good	5.555 \| good	20.282 \| good	21.062 \| good	0.582 \| good	3.322 \| good	0.292 \| good
2026-09-06T16:00:00.000Z	23 \| good	3.966 \| good	18.888 \| good	24.693 \| good	0.553 \| good	2.923 \| good	0.338 \| good
2026-09-06T17:00:00.000Z	27 \| good	5.084 \| good	20.092 \| good	21.149 \| good	0.551 \| good	2.444 \| good	0.315 \| good
2026-09-06T18:00:00.000Z	22 \| good	4.367 \| good	17.721 \| good	24.106 \| good	0.552 \| good	2.97 \| good	0.296 \| good
2026-09-06T19:00:00.000Z	25 \| good	4.304 \| good	16.881 \| good	26.656 \| good	0.554 \| good	2.334 \| good	0.32 \| good
2026-09-06T20:00:00.000Z	23 \| good	4.445 \| good	11.467 \| good	24.669 \| good	0.551 \| good	2.142 \| good	0.315 \| good
2026-09-06T21:00:00.000Z	23 \| good	4.13 \| good	18.113 \| good	25.437 \| good	0.513 \| good	2.354 \| good	0.311 \| good
2026-09-06T22:00:00.000Z	27 \| good	5 \| good	18.118 \| good	26.409 \| good	0.6 \| good	3.088 \| good	0.288 \| good
2026-09-06T23:00:00.000Z	24 \| good	3.773 \| good	17.756 \| good	26.089 \| good	0.568 \| good	3.765 \| good	0.288 \| good
2026-09-07T00:00:00.000Z	25 \| good	4.489 \| good	15.901 \| good	27.16 \| good	0.557 \| good	6.058 \| good	0.293 \| good
2026-09-07T01:00:00.000Z	27 \| good	4.713 \| good	20.066 \| good	25.873 \| good	0.604 \| good	4.086 \| good	0.315 \| good
2026-09-07T02:00:00.000Z	27 \| good	5.023 \| good	20.092 \| good	15.728 \| good	0.628 \| good	3.79 \| good	0.315 \| good
2026-09-07T03:00:00.000Z	44 \| good	7.924 \| good	34.881 \| good	14.566 \| good	0.426 \| good	15.138 \| good	0.231 \| good
2026-09-07T04:00:00.000Z	33 \| good	6.395 \| good	31.787 \| good	18.143 \| good	0.679 \| good	5.414 \| good	0.388 \| good
2026-09-07T05:00:00.000Z	27 \| good	5.105 \| good	25.601 \| good	20.432 \| good	0.636 \| good	10.126 \| good	0.369 \| good
2026-09-07T06:00:00.000Z	27 \| good	5.116 \| good	20.723 \| good	14.734 \| good	0.603 \| good	10.915 \| good	0.439 \| good
2026-09-07T07:00:00.000Z	27 \| good	5.44 \| good	22.905 \| good	17.336 \| good	0.614 \| good	13.65 \| good	0.439 \| good
2026-09-07T08:00:00.000Z	27 \| good	5.241 \| good	22.044 \| good	13.06 \| good	0.557 \| good	12.252 \| good	0.407 \| good
2026-09-07T09:00:00.000Z	27 \| good	4.51 \| good	18.307 \| good	10.559 \| good	0.526 \| good	8.781 \| good	0.419 \| good
2026-09-07T10:00:00.000Z	22 \| good	4.004 \| good	18.734 \| good	9.207 \| good	0.601 \| good	11.979 \| good	0.464 \| good
2026-09-07T11:00:00.000Z	22 \| good	4.171 \| good	23.07 \| good	11.607 \| good	0.621 \| good	11.411 \| good	0.399 \| good
2026-09-07T12:00:00.000Z	22 \| good	4.433 \| good	15.202 \| good	11.539 \| good	0.652 \| good	11.422 \| good	0.396 \| good
2026-09-07T13:00:00.000Z	33 \| good	5.533 \| good	24.372 \| good	10.503 \| good	0.624 \| good	10.498 \| good	0.389 \| good
2026-09-07T14:00:00.000Z	25 \| good	2.792 \| good	11.926 \| good	26.693 \| good	0.497 \| good	4.185 \| good	0.186 \| good
2026-09-07T15:00:00.000Z	29 \| good	2 \| good	7.995 \| good	31.216 \| good	0.441 \| good	1.843 \| good	0.158 \| good
2026-09-07T16:00:00.000Z	31 \| good	1.481 \| good	5.985 \| good	34.039 \| good	0.36 \| good	1.113 \| good	0.149 \| good
2026-09-07T17:00:00.000Z	34 \| good	1.719 \| good	6.996 \| good	37.173 \| good	0.334 \| good	0.885 \| good	0.147 \| good
2026-09-07T18:00:00.000Z	35 \| good	3.03 \| good	12.025 \| good	37.834 \| good	0.328 \| good	0.83 \| good	0.147 \| good
2026-09-07T19:00:00.000Z	34 \| good	2.707 \| good	10.973 \| good	37.08 \| good	0.336 \| good	0.874 \| good	0.148 \| good
2026-09-07T20:00:00.000Z	33 \| good	1.909 \| good	7.939 \| good	36.124 \| good	0.355 \| good	0.976 \| good	0.149 \| good
2026-09-07T21:00:00.000Z	31 \| good	1.355 \| good	5.017 \| good	34.005 \| good	0.374 \| good	1.182 \| good	0.151 \| good
2026-09-07T22:00:00.000Z	30 \| good	2.299 \| good	9.879 \| good	31.809 \| good	0.395 \| good	2.002 \| good	0.159 \| good
2026-09-07T23:00:00.000Z	28 \| good	3.08 \| good	13.762 \| good	29.864 \| good	0.42 \| good	7.563 \| good	0.204 \| good
2026-09-08T00:00:00.000Z	27 \| good	5.316 \| good	22.847 \| good	29.158 \| good	0.471 \| good	13.801 \| good	0.244 \| good
2026-09-08T01:00:00.000Z	49 \| good	8.633 \| good	37.811 \| good	23.817 \| good	0.549 \| good	17.323 \| good	0.266 \| good
2026-09-08T02:00:00.000Z	56 \| moderate	11.592 \| good	50.787 \| good	20.061 \| good	0.659 \| good	19.875 \| good	0.282 \| good
2026-09-08T03:00:00.000Z	56 \| moderate	11.915 \| good	53.702 \| good	18.95 \| good	0.816 \| good	23.048 \| good	0.302 \| good
2026-09-08T04:00:00.000Z	56 \| moderate	11.756 \| good	51.901 \| good	17.495 \| good	0.986 \| good	24.723 \| good	0.327 \| good
2026-09-08T05:00:00.000Z	54 \| moderate	10.793 \| good	47.885 \| good	16.638 \| good	1.127 \| good	24.752 \| good	0.347 \| good
2026-09-08T06:00:00.000Z	52 \| moderate	10.028 \| good	44.764 \| good	13.297 \| good	1.235 \| good	23.674 \| good	0.353 \| good
2026-09-08T07:00:00.000Z	49 \| good	9.492 \| good	42.695 \| good	10.096 \| good	1.295 \| good	22.623 \| good	0.353 \| good
2026-09-08T08:00:00.000Z	49 \| good	8.501 \| good	36.882 \| good	9.524 \| good	1.387 \| good	22.068 \| good	0.356 \| good
2026-09-08T09:00:00.000Z	38 \| good	6.952 \| good	30.861 \| good	12.064 \| good	1.469 \| good	21.483 \| good	0.357 \| good
2026-09-08T10:00:00.000Z	38 \| good	6.67 \| good	29.812 \| good	10.648 \| good	1.528 \| good	21.071 \| good	0.359 \| good
2026-09-08T11:00:00.000Z	44 \| good	7.507 \| good	32.891 \| good	11.677 \| good	1.632 \| good	19.529 \| good	0.374 \| good
2026-09-08T12:00:00.000Z	27 \| good	4.812 \| good	20.919 \| good	17.526 \| good	1.572 \| good	16.152 \| good	0.404 \| good
2026-09-08T13:00:00.000Z	27 \| good	4.829 \| good	20.934 \| good	22.239 \| good	0.959 \| good	11.874 \| good	0.31 \| good
2026-09-08T14:00:00.000Z	27 \| good	4.63 \| good	19.962 \| good	26.641 \| good	0.875 \| good	5.876 \| good	0.209 \| good
2026-09-08T15:00:00.000Z	28 \| good	3.777 \| good	16.008 \| good	30.186 \| good	0.952 \| good	2.706 \| good	0.171 \| good
2026-09-08T16:00:00.000Z	31 \| good	3.103 \| good	13.918 \| good	33.187 \| good	0.786 \| good	1.565 \| good	0.16 \| good
2026-09-08T17:00:00.000Z	32 \| good	3.553 \| good	15.9 \| good	34.892 \| good	0.727 \| good	1.234 \| good	0.159 \| good
2026-09-08T18:00:00.000Z	34 \| good	4.212 \| good	18.881 \| good	36.854 \| good	0.713 \| good	1.116 \| good	0.16 \| good
2026-09-08T19:00:00.000Z	36 \| good	3.464 \| good	14.895 \| good	38.515 \| good	0.725 \| good	1.112 \| good	0.163 \| good
2026-09-08T20:00:00.000Z	40 \| good	2.953 \| good	11.972 \| good	42.816 \| good	0.747 \| good	1.207 \| good	0.165 \| good
2026-09-08T21:00:00.000Z	42 \| good	2.914 \| good	11.992 \| good	45.12 \| good	0.776 \| good	1.455 \| good	0.168 \| good
2026-09-08T22:00:00.000Z	37 \| good	5.02 \| good	21.882 \| good	40.308 \| good	0.808 \| good	2.235 \| good	0.177 \| good
2026-09-08T23:00:00.000Z	31 \| good	5.166 \| good	22.83 \| good	32.769 \| good	0.785 \| good	8.56 \| good	0.233 \| good
2026-09-09T00:00:00.000Z	33 \| good	6.496 \| good	28.752 \| good	26.125 \| good	0.765 \| good	14.417 \| good	0.273 \| good
2026-09-09T01:00:00.000Z	49 \| good	8.883 \| good	38.842 \| good	21.897 \| good	0.722 \| good	17.483 \| good	0.289 \| good
2026-09-09T02:00:00.000Z	54 \| moderate	11.234 \| good	49.832 \| good	21.528 \| good	0.682 \| good	20.08 \| good	0.302 \| good
2026-09-09T03:00:00.000Z	56 \| moderate	12.491 \| fine	56.793 \| fine	24.592 \| good	0.662 \| good	23.222 \| good	0.318 \| good
2026-09-09T04:00:00.000Z	60 \| moderate	14.186 \| fine	62.916 \| fine	25.661 \| good	0.652 \| good	24.97 \| good	0.331 \| good
2026-09-09T05:00:00.000Z	60 \| moderate	14.264 \| fine	62.966 \| fine	22.258 \| good	0.636 \| good	22.961 \| good	0.321 \| good
2026-09-09T06:00:00.000Z	60 \| moderate	14.063 \| fine	62.962 \| fine	19.776 \| good	0.633 \| good	19.234 \| good	0.294 \| good
2026-09-09T07:00:00.000Z	58 \| moderate	13.349 \| fine	60.885 \| fine	17.361 \| good	0.627 \| good	16.14 \| good	0.271 \| good
2026-09-09T08:00:00.000Z	58 \| moderate	12.61 \| fine	56.928 \| fine	15.718 \| good	0.611 \| good	13.898 \| good	0.252 \| good
2026-09-09T09:00:00.000Z	56 \| moderate	12.361 \| fine	54.996 \| good	14.885 \| good	0.594 \| good	12.248 \| good	0.237 \| good
2026-09-09T10:00:00.000Z	56 \| moderate	11.51 \| good	50.936 \| good	10.911 \| good	0.594 \| good	11.045 \| good	0.226 \| good
2026-09-09T11:00:00.000Z	54 \| moderate	11.078 \| good	48.915 \| good	10.242 \| good	0.621 \| good	10.187 \| good	0.22 \| good
2026-09-09T12:00:00.000Z	54 \| moderate	11.499 \| good	12.019 \| good	24.849 \| good	0.661 \| good	9.657 \| good	0.229 \| good
2026-09-09T13:00:00.000Z	56 \| moderate	11.704 \| good	12.586 \| good	35.176 \| good	0.785 \| good	7.213 \| good	0.223 \| good

Horsham

Empower business decisions with accurate air quality data

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

0.46ppm

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 03:00:00, 2026-09-07.

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

The best air quality in Horsham, Pennsylvania was observed at 12:00:00 on 2026-09-07.

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

The air quality in Horsham, Pennsylvania right now is Good, with an AQI of 33.

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 5.533 μg/m³.

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

Horsham, Pennsylvania currently has a PM₁₀ concentration of 24.372 μg/m³.

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

The current carbon monoxide (CO) level in Horsham, Pennsylvania is 0.389 ppm.

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

The current sulfur dioxide (SO₂) concentration in Horsham, Pennsylvania is 0.624 ppb.

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

Horsham, Pennsylvania currently has an ozone (O₃) concentration of 10.503 ppm.

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

The current level of nitrogen dioxide (NO₂) in Horsham, Pennsylvania is 10.498 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-05T14:00:00.000Z	38 \| good	6.557 \| good	24.611 \| good	25.083 \| good	0.918 \| good	6.762 \| good	0.28 \| good
2026-09-05T15:00:00.000Z	38 \| good	6.939 \| good	30.002 \| good	29.788 \| good	0.98 \| good	5.03 \| good	0.28 \| good
2026-09-05T16:00:00.000Z	27 \| good	5.396 \| good	22.935 \| good	26.308 \| good	0.882 \| good	4.446 \| good	0.28 \| good
2026-09-05T17:00:00.000Z	30 \| good	5.145 \| good	19.249 \| good	31.584 \| good	0.742 \| good	3.495 \| good	0.257 \| good
2026-09-05T18:00:00.000Z	28 \| good	4.766 \| good	25.547 \| good	29.681 \| good	0.782 \| good	3.261 \| good	0.262 \| good
2026-09-05T19:00:00.000Z	33 \| good	4.523 \| good	22.127 \| good	36.074 \| good	0.844 \| good	3.143 \| good	0.262 \| good
2026-09-05T20:00:00.000Z	33 \| good	4.152 \| good	16.941 \| good	36.165 \| good	0.647 \| good	3.027 \| good	0.262 \| good
2026-09-05T21:00:00.000Z	31 \| good	3.884 \| good	19.117 \| good	33.633 \| good	0.656 \| good	3.179 \| good	0.262 \| good
2026-09-05T22:00:00.000Z	32 \| good	3.248 \| good	17.798 \| good	34.793 \| good	0.567 \| good	3.507 \| good	0.262 \| good
2026-09-05T23:00:00.000Z	30 \| good	3.315 \| good	15.765 \| good	32.357 \| good	0.661 \| good	4.166 \| good	0.308 \| good
2026-09-06T00:00:00.000Z	30 \| good	3.631 \| good	18.018 \| good	32.494 \| good	0.695 \| good	4.925 \| good	0.327 \| good
2026-09-06T01:00:00.000Z	24 \| good	3.019 \| good	14.792 \| good	25.743 \| good	0.638 \| good	10.353 \| good	0.331 \| good
2026-09-06T02:00:00.000Z	22 \| good	3.845 \| good	14.626 \| good	24 \| good	0.637 \| good	10.652 \| good	0.381 \| good
2026-09-06T03:00:00.000Z	22 \| good	3.969 \| good	17.004 \| good	14.761 \| good	0.372 \| good	11.15 \| good	0.215 \| good
2026-09-06T04:00:00.000Z	22 \| good	4.495 \| good	21.516 \| good	21.045 \| good	0.54 \| good	9.946 \| good	0.4 \| good
2026-09-06T05:00:00.000Z	22 \| good	3.918 \| good	18.976 \| good	18.095 \| good	0.596 \| good	8.827 \| good	0.358 \| good
2026-09-06T06:00:00.000Z	27 \| good	4.974 \| good	21.794 \| good	13.448 \| good	0.67 \| good	7.577 \| good	0.388 \| good
2026-09-06T07:00:00.000Z	27 \| good	4.998 \| good	20.439 \| good	11.095 \| good	0.576 \| good	5.544 \| good	0.335 \| good
2026-09-06T08:00:00.000Z	27 \| good	4.731 \| good	17.704 \| good	12.137 \| good	0.584 \| good	4.827 \| good	0.353 \| good
2026-09-06T09:00:00.000Z	27 \| good	4.902 \| good	17.961 \| good	16.645 \| good	0.551 \| good	3.781 \| good	0.33 \| good
2026-09-06T10:00:00.000Z	22 \| good	4.093 \| good	17.29 \| good	15.124 \| good	0.58 \| good	4.043 \| good	0.307 \| good
2026-09-06T11:00:00.000Z	27 \| good	4.892 \| good	21.569 \| good	14.13 \| good	0.491 \| good	4.157 \| good	0.307 \| good
2026-09-06T12:00:00.000Z	27 \| good	5.06 \| good	20.711 \| good	15.822 \| good	0.532 \| good	4.137 \| good	0.311 \| good
2026-09-06T13:00:00.000Z	27 \| good	4.681 \| good	22.12 \| good	15.508 \| good	0.615 \| good	4.467 \| good	0.311 \| good
2026-09-06T14:00:00.000Z	27 \| good	4.904 \| good	18.039 \| good	19.558 \| good	0.444 \| good	3.823 \| good	0.311 \| good
2026-09-06T15:00:00.000Z	33 \| good	5.555 \| good	20.282 \| good	21.062 \| good	0.582 \| good	3.322 \| good	0.292 \| good
2026-09-06T16:00:00.000Z	23 \| good	3.966 \| good	18.888 \| good	24.693 \| good	0.553 \| good	2.923 \| good	0.338 \| good
2026-09-06T17:00:00.000Z	27 \| good	5.084 \| good	20.092 \| good	21.149 \| good	0.551 \| good	2.444 \| good	0.315 \| good
2026-09-06T18:00:00.000Z	22 \| good	4.367 \| good	17.721 \| good	24.106 \| good	0.552 \| good	2.97 \| good	0.296 \| good
2026-09-06T19:00:00.000Z	25 \| good	4.304 \| good	16.881 \| good	26.656 \| good	0.554 \| good	2.334 \| good	0.32 \| good
2026-09-06T20:00:00.000Z	23 \| good	4.445 \| good	11.467 \| good	24.669 \| good	0.551 \| good	2.142 \| good	0.315 \| good
2026-09-06T21:00:00.000Z	23 \| good	4.13 \| good	18.113 \| good	25.437 \| good	0.513 \| good	2.354 \| good	0.311 \| good
2026-09-06T22:00:00.000Z	27 \| good	5 \| good	18.118 \| good	26.409 \| good	0.6 \| good	3.088 \| good	0.288 \| good
2026-09-06T23:00:00.000Z	24 \| good	3.773 \| good	17.756 \| good	26.089 \| good	0.568 \| good	3.765 \| good	0.288 \| good
2026-09-07T00:00:00.000Z	25 \| good	4.489 \| good	15.901 \| good	27.16 \| good	0.557 \| good	6.058 \| good	0.293 \| good
2026-09-07T01:00:00.000Z	27 \| good	4.713 \| good	20.066 \| good	25.873 \| good	0.604 \| good	4.086 \| good	0.315 \| good
2026-09-07T02:00:00.000Z	27 \| good	5.023 \| good	20.092 \| good	15.728 \| good	0.628 \| good	3.79 \| good	0.315 \| good
2026-09-07T03:00:00.000Z	44 \| good	7.924 \| good	34.881 \| good	14.566 \| good	0.426 \| good	15.138 \| good	0.231 \| good
2026-09-07T04:00:00.000Z	33 \| good	6.395 \| good	31.787 \| good	18.143 \| good	0.679 \| good	5.414 \| good	0.388 \| good
2026-09-07T05:00:00.000Z	27 \| good	5.105 \| good	25.601 \| good	20.432 \| good	0.636 \| good	10.126 \| good	0.369 \| good
2026-09-07T06:00:00.000Z	27 \| good	5.116 \| good	20.723 \| good	14.734 \| good	0.603 \| good	10.915 \| good	0.439 \| good
2026-09-07T07:00:00.000Z	27 \| good	5.44 \| good	22.905 \| good	17.336 \| good	0.614 \| good	13.65 \| good	0.439 \| good
2026-09-07T08:00:00.000Z	27 \| good	5.241 \| good	22.044 \| good	13.06 \| good	0.557 \| good	12.252 \| good	0.407 \| good
2026-09-07T09:00:00.000Z	27 \| good	4.51 \| good	18.307 \| good	10.559 \| good	0.526 \| good	8.781 \| good	0.419 \| good
2026-09-07T10:00:00.000Z	22 \| good	4.004 \| good	18.734 \| good	9.207 \| good	0.601 \| good	11.979 \| good	0.464 \| good
2026-09-07T11:00:00.000Z	22 \| good	4.171 \| good	23.07 \| good	11.607 \| good	0.621 \| good	11.411 \| good	0.399 \| good
2026-09-07T12:00:00.000Z	22 \| good	4.433 \| good	15.202 \| good	11.539 \| good	0.652 \| good	11.422 \| good	0.396 \| good
2026-09-07T13:00:00.000Z	33 \| good	5.533 \| good	24.372 \| good	10.503 \| good	0.624 \| good	10.498 \| good	0.389 \| good
2026-09-07T14:00:00.000Z	25 \| good	2.792 \| good	11.926 \| good	26.693 \| good	0.497 \| good	4.185 \| good	0.186 \| good
2026-09-07T15:00:00.000Z	29 \| good	2 \| good	7.995 \| good	31.216 \| good	0.441 \| good	1.843 \| good	0.158 \| good
2026-09-07T16:00:00.000Z	31 \| good	1.481 \| good	5.985 \| good	34.039 \| good	0.36 \| good	1.113 \| good	0.149 \| good
2026-09-07T17:00:00.000Z	34 \| good	1.719 \| good	6.996 \| good	37.173 \| good	0.334 \| good	0.885 \| good	0.147 \| good
2026-09-07T18:00:00.000Z	35 \| good	3.03 \| good	12.025 \| good	37.834 \| good	0.328 \| good	0.83 \| good	0.147 \| good
2026-09-07T19:00:00.000Z	34 \| good	2.707 \| good	10.973 \| good	37.08 \| good	0.336 \| good	0.874 \| good	0.148 \| good
2026-09-07T20:00:00.000Z	33 \| good	1.909 \| good	7.939 \| good	36.124 \| good	0.355 \| good	0.976 \| good	0.149 \| good
2026-09-07T21:00:00.000Z	31 \| good	1.355 \| good	5.017 \| good	34.005 \| good	0.374 \| good	1.182 \| good	0.151 \| good
2026-09-07T22:00:00.000Z	30 \| good	2.299 \| good	9.879 \| good	31.809 \| good	0.395 \| good	2.002 \| good	0.159 \| good
2026-09-07T23:00:00.000Z	28 \| good	3.08 \| good	13.762 \| good	29.864 \| good	0.42 \| good	7.563 \| good	0.204 \| good
2026-09-08T00:00:00.000Z	27 \| good	5.316 \| good	22.847 \| good	29.158 \| good	0.471 \| good	13.801 \| good	0.244 \| good
2026-09-08T01:00:00.000Z	49 \| good	8.633 \| good	37.811 \| good	23.817 \| good	0.549 \| good	17.323 \| good	0.266 \| good
2026-09-08T02:00:00.000Z	56 \| moderate	11.592 \| good	50.787 \| good	20.061 \| good	0.659 \| good	19.875 \| good	0.282 \| good
2026-09-08T03:00:00.000Z	56 \| moderate	11.915 \| good	53.702 \| good	18.95 \| good	0.816 \| good	23.048 \| good	0.302 \| good
2026-09-08T04:00:00.000Z	56 \| moderate	11.756 \| good	51.901 \| good	17.495 \| good	0.986 \| good	24.723 \| good	0.327 \| good
2026-09-08T05:00:00.000Z	54 \| moderate	10.793 \| good	47.885 \| good	16.638 \| good	1.127 \| good	24.752 \| good	0.347 \| good
2026-09-08T06:00:00.000Z	52 \| moderate	10.028 \| good	44.764 \| good	13.297 \| good	1.235 \| good	23.674 \| good	0.353 \| good
2026-09-08T07:00:00.000Z	49 \| good	9.492 \| good	42.695 \| good	10.096 \| good	1.295 \| good	22.623 \| good	0.353 \| good
2026-09-08T08:00:00.000Z	49 \| good	8.501 \| good	36.882 \| good	9.524 \| good	1.387 \| good	22.068 \| good	0.356 \| good
2026-09-08T09:00:00.000Z	38 \| good	6.952 \| good	30.861 \| good	12.064 \| good	1.469 \| good	21.483 \| good	0.357 \| good
2026-09-08T10:00:00.000Z	38 \| good	6.67 \| good	29.812 \| good	10.648 \| good	1.528 \| good	21.071 \| good	0.359 \| good
2026-09-08T11:00:00.000Z	44 \| good	7.507 \| good	32.891 \| good	11.677 \| good	1.632 \| good	19.529 \| good	0.374 \| good
2026-09-08T12:00:00.000Z	27 \| good	4.812 \| good	20.919 \| good	17.526 \| good	1.572 \| good	16.152 \| good	0.404 \| good
2026-09-08T13:00:00.000Z	27 \| good	4.829 \| good	20.934 \| good	22.239 \| good	0.959 \| good	11.874 \| good	0.31 \| good
2026-09-08T14:00:00.000Z	27 \| good	4.63 \| good	19.962 \| good	26.641 \| good	0.875 \| good	5.876 \| good	0.209 \| good
2026-09-08T15:00:00.000Z	28 \| good	3.777 \| good	16.008 \| good	30.186 \| good	0.952 \| good	2.706 \| good	0.171 \| good
2026-09-08T16:00:00.000Z	31 \| good	3.103 \| good	13.918 \| good	33.187 \| good	0.786 \| good	1.565 \| good	0.16 \| good
2026-09-08T17:00:00.000Z	32 \| good	3.553 \| good	15.9 \| good	34.892 \| good	0.727 \| good	1.234 \| good	0.159 \| good
2026-09-08T18:00:00.000Z	34 \| good	4.212 \| good	18.881 \| good	36.854 \| good	0.713 \| good	1.116 \| good	0.16 \| good
2026-09-08T19:00:00.000Z	36 \| good	3.464 \| good	14.895 \| good	38.515 \| good	0.725 \| good	1.112 \| good	0.163 \| good
2026-09-08T20:00:00.000Z	40 \| good	2.953 \| good	11.972 \| good	42.816 \| good	0.747 \| good	1.207 \| good	0.165 \| good
2026-09-08T21:00:00.000Z	42 \| good	2.914 \| good	11.992 \| good	45.12 \| good	0.776 \| good	1.455 \| good	0.168 \| good
2026-09-08T22:00:00.000Z	37 \| good	5.02 \| good	21.882 \| good	40.308 \| good	0.808 \| good	2.235 \| good	0.177 \| good
2026-09-08T23:00:00.000Z	31 \| good	5.166 \| good	22.83 \| good	32.769 \| good	0.785 \| good	8.56 \| good	0.233 \| good
2026-09-09T00:00:00.000Z	33 \| good	6.496 \| good	28.752 \| good	26.125 \| good	0.765 \| good	14.417 \| good	0.273 \| good
2026-09-09T01:00:00.000Z	49 \| good	8.883 \| good	38.842 \| good	21.897 \| good	0.722 \| good	17.483 \| good	0.289 \| good
2026-09-09T02:00:00.000Z	54 \| moderate	11.234 \| good	49.832 \| good	21.528 \| good	0.682 \| good	20.08 \| good	0.302 \| good
2026-09-09T03:00:00.000Z	56 \| moderate	12.491 \| fine	56.793 \| fine	24.592 \| good	0.662 \| good	23.222 \| good	0.318 \| good
2026-09-09T04:00:00.000Z	60 \| moderate	14.186 \| fine	62.916 \| fine	25.661 \| good	0.652 \| good	24.97 \| good	0.331 \| good
2026-09-09T05:00:00.000Z	60 \| moderate	14.264 \| fine	62.966 \| fine	22.258 \| good	0.636 \| good	22.961 \| good	0.321 \| good
2026-09-09T06:00:00.000Z	60 \| moderate	14.063 \| fine	62.962 \| fine	19.776 \| good	0.633 \| good	19.234 \| good	0.294 \| good
2026-09-09T07:00:00.000Z	58 \| moderate	13.349 \| fine	60.885 \| fine	17.361 \| good	0.627 \| good	16.14 \| good	0.271 \| good
2026-09-09T08:00:00.000Z	58 \| moderate	12.61 \| fine	56.928 \| fine	15.718 \| good	0.611 \| good	13.898 \| good	0.252 \| good
2026-09-09T09:00:00.000Z	56 \| moderate	12.361 \| fine	54.996 \| good	14.885 \| good	0.594 \| good	12.248 \| good	0.237 \| good
2026-09-09T10:00:00.000Z	56 \| moderate	11.51 \| good	50.936 \| good	10.911 \| good	0.594 \| good	11.045 \| good	0.226 \| good
2026-09-09T11:00:00.000Z	54 \| moderate	11.078 \| good	48.915 \| good	10.242 \| good	0.621 \| good	10.187 \| good	0.22 \| good
2026-09-09T12:00:00.000Z	54 \| moderate	11.499 \| good	12.019 \| good	24.849 \| good	0.661 \| good	9.657 \| good	0.229 \| good
2026-09-09T13:00:00.000Z	56 \| moderate	11.704 \| good	12.586 \| good	35.176 \| good	0.785 \| good	7.213 \| good	0.223 \| 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)

Track live Horsham, Pennsylvania air quality forecast and history

Empower business decisions with accurate air quality data

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

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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?

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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?