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

Horsham, Pennsylvania currently has a PM10 concentration of 19.748 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Horsham, Pennsylvania is 0.788 ppb.

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

Horsham, Pennsylvania currently has an ozone (O3) concentration of 26.713 ppm.

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

The current level of nitrogen dioxide (NO2) in Horsham, Pennsylvania is 8.744 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 4.17 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)

4.17 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

19.75 μg/m³

155

255

425

605+

Ozone (O₃)

26.71 ppb

201

201+

Sulfur Dioxide (SO₂)

0.79 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.74 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 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
2026-05-19T20:00:00.000Z	64 \| moderate	14.192 \| fine	65.062 \| fine	59.075 \| fine	0.906 \| good	10.511 \| good	0.292 \| good
2026-05-19T21:00:00.000Z	67 \| moderate	13.263 \| fine	55.155 \| fine	60.078 \| fine	0.956 \| good	11.102 \| good	0.315 \| good
2026-05-19T22:00:00.000Z	80 \| moderate	12.037 \| good	46.552 \| good	63.834 \| fine	1.144 \| good	8.385 \| good	0.315 \| good
2026-05-19T23:00:00.000Z	54 \| moderate	11.132 \| good	49.862 \| good	55.787 \| fine	1.145 \| good	8.151 \| good	0.346 \| good
2026-05-20T00:00:00.000Z	58 \| moderate	9.283 \| good	38.641 \| good	57.386 \| fine	1.262 \| good	11.16 \| good	0.369 \| good
2026-05-20T01:00:00.000Z	64 \| moderate	15.56 \| fine	77.648 \| fine	51.298 \| good	1.159 \| good	11.604 \| good	0.374 \| good
2026-05-20T02:00:00.000Z	49 \| good	8.75 \| good	42.476 \| good	48.03 \| good	1.306 \| good	9.439 \| good	0.323 \| good
2026-05-20T03:00:00.000Z	52 \| moderate	10.381 \| good	41.074 \| good	45.389 \| good	0.977 \| good	18.574 \| good	0.416 \| good
2026-05-20T04:00:00.000Z	56 \| moderate	11.728 \| good	47.14 \| good	43.574 \| good	0.931 \| good	18.87 \| good	0.416 \| good
2026-05-20T05:00:00.000Z	44 \| good	7.866 \| good	24.387 \| good	40.018 \| good	1.092 \| good	20.964 \| good	0.389 \| good
2026-05-20T06:00:00.000Z	56 \| moderate	12.411 \| fine	53.379 \| good	24.64 \| good	1.096 \| good	24.284 \| good	0.378 \| good
2026-05-20T07:00:00.000Z	58 \| moderate	13.198 \| fine	60.103 \| fine	38.506 \| good	1.13 \| good	20.682 \| good	0.355 \| good
2026-05-20T08:00:00.000Z	62 \| moderate	14.739 \| fine	61.29 \| fine	30.736 \| good	0.872 \| good	17.641 \| good	0.316 \| good
2026-05-20T09:00:00.000Z	64 \| moderate	16.061 \| fine	66.344 \| fine	33.925 \| good	0.868 \| good	16.297 \| good	0.323 \| good
2026-05-20T10:00:00.000Z	58 \| moderate	13.341 \| fine	47.543 \| good	21.912 \| good	0.736 \| good	18.288 \| good	0.347 \| good
2026-05-20T11:00:00.000Z	60 \| moderate	14.171 \| fine	55.916 \| fine	22.575 \| good	0.472 \| good	19.033 \| good	0.397 \| good
2026-05-20T12:00:00.000Z	56 \| moderate	12.106 \| fine	50.352 \| good	26.285 \| good	0.85 \| good	16.896 \| good	0.408 \| good
2026-05-20T13:00:00.000Z	62 \| moderate	14.854 \| fine	59.387 \| fine	31.524 \| good	1.304 \| good	26.933 \| good	0.485 \| good
2026-05-20T14:00:00.000Z	54 \| moderate	10.921 \| good	36.932 \| good	36.653 \| good	1.01 \| good	15.729 \| good	0.381 \| good
2026-05-20T15:00:00.000Z	56 \| moderate	12.142 \| fine	51.181 \| good	43.226 \| good	0.93 \| good	12.56 \| good	0.338 \| good
2026-05-20T16:00:00.000Z	54 \| moderate	10.766 \| good	39.057 \| good	47.964 \| good	0.927 \| good	11.373 \| good	0.277 \| good
2026-05-20T17:00:00.000Z	49 \| good	8.63 \| good	33.045 \| good	52.002 \| good	0.892 \| good	10.624 \| good	0.277 \| good
2026-05-20T18:00:00.000Z	48 \| good	8.462 \| good	35.259 \| good	52.414 \| good	0.847 \| good	12.315 \| good	0.323 \| good
2026-05-20T19:00:00.000Z	54 \| moderate	9.985 \| good	44.929 \| good	55.756 \| fine	0.918 \| good	9.781 \| good	0.303 \| good
2026-05-20T20:00:00.000Z	71 \| moderate	8.445 \| good	32.592 \| good	60.762 \| fine	0.919 \| good	10.011 \| good	0.273 \| good
2026-05-20T21:00:00.000Z	67 \| moderate	7.514 \| good	32.837 \| good	59.834 \| fine	0.992 \| good	9.548 \| good	0.35 \| good
2026-05-20T22:00:00.000Z	56 \| moderate	11.538 \| good	50.75 \| good	56.128 \| fine	1.06 \| good	10.612 \| good	0.35 \| good
2026-05-20T23:00:00.000Z	54 \| moderate	10.98 \| good	34.361 \| good	54.294 \| good	2.324 \| good	4.65 \| good	0.227 \| good
2026-05-21T00:00:00.000Z	56 \| moderate	11.757 \| good	52.723 \| good	53.795 \| good	1.794 \| good	7.993 \| good	0.234 \| good
2026-05-21T01:00:00.000Z	54 \| moderate	10.504 \| good	44.155 \| good	35.789 \| good	1.032 \| good	8.048 \| good	0.2 \| good
2026-05-21T02:00:00.000Z	49 \| good	9.382 \| good	39.091 \| good	29.519 \| good	0.87 \| good	21.177 \| good	0.37 \| good
2026-05-21T03:00:00.000Z	52 \| moderate	10.385 \| good	52.247 \| good	28.224 \| good	0.846 \| good	9.53 \| good	0.25 \| good
2026-05-21T04:00:00.000Z	38 \| good	6.799 \| good	25.342 \| good	18.647 \| good	0.809 \| good	12.916 \| good	0.346 \| good
2026-05-21T05:00:00.000Z	33 \| good	5.789 \| good	22.984 \| good	17.998 \| good	0.826 \| good	11.114 \| good	0.343 \| good
2026-05-21T06:00:00.000Z	38 \| good	6.585 \| good	28.335 \| good	19.168 \| good	0.878 \| good	10.254 \| good	0.32 \| good
2026-05-21T07:00:00.000Z	38 \| good	7.357 \| good	15.804 \| good	18.806 \| good	0.958 \| good	9.375 \| good	0.297 \| good
2026-05-21T08:00:00.000Z	33 \| good	5.844 \| good	24.227 \| good	18.218 \| good	0.857 \| good	9.183 \| good	0.254 \| good
2026-05-21T09:00:00.000Z	27 \| good	4.743 \| good	16.23 \| good	18.023 \| good	0.88 \| good	7.669 \| good	0.254 \| good
2026-05-21T10:00:00.000Z	27 \| good	4.803 \| good	17.997 \| good	19.842 \| good	0.997 \| good	9.065 \| good	0.285 \| good
2026-05-21T11:00:00.000Z	24 \| good	3.563 \| good	13.932 \| good	26.369 \| good	0.818 \| good	12.398 \| good	0.335 \| good
2026-05-21T12:00:00.000Z	28 \| good	4.091 \| good	12.175 \| good	30.138 \| good	0.744 \| good	14.629 \| good	0.355 \| good
2026-05-21T13:00:00.000Z	26 \| good	3.038 \| good	11.732 \| good	28.45 \| good	0.776 \| good	13.473 \| good	0.3 \| good
2026-05-21T14:00:00.000Z	25 \| good	3.247 \| good	19.817 \| good	26.634 \| good	0.751 \| good	11.274 \| good	0.277 \| good
2026-05-21T15:00:00.000Z	24 \| good	3.376 \| good	11.185 \| good	26.422 \| good	0.688 \| good	10.431 \| good	0.308 \| good
2026-05-21T16:00:00.000Z	26 \| good	4.134 \| good	10.754 \| good	28.352 \| good	0.771 \| good	10.571 \| good	0.288 \| good
2026-05-21T17:00:00.000Z	27 \| good	5.166 \| good	28.989 \| good	25.948 \| good	0.834 \| good	10.191 \| good	0.28 \| good
2026-05-21T18:00:00.000Z	27 \| good	5.002 \| good	25.359 \| good	27.86 \| good	0.836 \| good	9.142 \| good	0.303 \| good
2026-05-21T19:00:00.000Z	27 \| good	2.068 \| good	10.269 \| good	29.003 \| good	0.899 \| good	10.487 \| good	0.303 \| good
2026-05-21T19:00:00.000Z	25 \| good	4.17 \| good	19.748 \| good	26.713 \| good	0.788 \| good	8.744 \| good	0.305 \| good
2026-05-21T20:00:00.000Z	38 \| good	6.909 \| good	30.944 \| good	29.721 \| good	0.48 \| good	5.971 \| good	0.174 \| good
2026-05-21T21:00:00.000Z	49 \| good	8.539 \| good	36.955 \| good	30.228 \| good	0.523 \| good	6.489 \| good	0.176 \| good
2026-05-21T22:00:00.000Z	49 \| good	9.423 \| good	41.891 \| good	29.258 \| good	0.552 \| good	7.677 \| good	0.185 \| good
2026-05-21T23:00:00.000Z	56 \| moderate	11.517 \| good	50.927 \| good	25.689 \| good	0.56 \| good	9.931 \| good	0.203 \| good
2026-05-22T00:00:00.000Z	52 \| moderate	10.186 \| good	44.874 \| good	20.649 \| good	0.588 \| good	12.203 \| good	0.213 \| good
2026-05-22T01:00:00.000Z	56 \| moderate	12.44 \| fine	56.698 \| fine	15.508 \| good	0.62 \| good	13.877 \| good	0.219 \| good
2026-05-22T02:00:00.000Z	60 \| moderate	13.816 \| fine	62.78 \| fine	13.616 \| good	0.647 \| good	14.032 \| good	0.216 \| good
2026-05-22T03:00:00.000Z	60 \| moderate	14.071 \| fine	62.868 \| fine	14.684 \| good	0.674 \| good	14.147 \| good	0.213 \| good
2026-05-22T04:00:00.000Z	62 \| moderate	14.775 \| fine	66.798 \| fine	13.995 \| good	0.681 \| good	14.034 \| good	0.212 \| good
2026-05-22T05:00:00.000Z	62 \| moderate	14.952 \| fine	66.905 \| fine	14.834 \| good	0.656 \| good	12.997 \| good	0.206 \| good
2026-05-22T06:00:00.000Z	62 \| moderate	14.953 \| fine	66.885 \| fine	17.183 \| good	0.625 \| good	12.262 \| good	0.2 \| good
2026-05-22T07:00:00.000Z	60 \| moderate	13.799 \| fine	62.849 \| fine	19.313 \| good	0.604 \| good	11.707 \| good	0.193 \| good
2026-05-22T08:00:00.000Z	54 \| moderate	11.049 \| good	49.111 \| good	21.897 \| good	0.59 \| good	11.324 \| good	0.186 \| good
2026-05-22T09:00:00.000Z	49 \| good	9.169 \| good	41.167 \| good	23.201 \| good	0.581 \| good	11.091 \| good	0.18 \| good
2026-05-22T10:00:00.000Z	44 \| good	7.809 \| good	34.183 \| good	22.947 \| good	0.596 \| good	10.553 \| good	0.171 \| good
2026-05-22T11:00:00.000Z	38 \| good	7.233 \| good	32.096 \| good	26.606 \| good	0.613 \| good	9.226 \| good	0.162 \| good
2026-05-22T12:00:00.000Z	33 \| good	5.808 \| good	25.036 \| good	29.477 \| good	0.624 \| good	8.963 \| good	0.161 \| good
2026-05-22T13:00:00.000Z	30 \| good	5.242 \| good	22.931 \| good	31.963 \| good	0.639 \| good	8.38 \| good	0.161 \| good
2026-05-22T14:00:00.000Z	34 \| good	4.806 \| good	20.987 \| good	36.921 \| good	0.624 \| good	7.145 \| good	0.157 \| good
2026-05-22T15:00:00.000Z	35 \| good	4.997 \| good	21.956 \| good	38.216 \| good	0.598 \| good	5.899 \| good	0.154 \| good
2026-05-22T16:00:00.000Z	36 \| good	5.865 \| good	25.044 \| good	38.958 \| good	0.562 \| good	4.672 \| good	0.15 \| good
2026-05-22T17:00:00.000Z	36 \| good	6.374 \| good	27.992 \| good	38.502 \| good	0.528 \| good	3.894 \| good	0.146 \| good
2026-05-22T18:00:00.000Z	35 \| good	6.467 \| good	28.961 \| good	37.517 \| good	0.488 \| good	3.325 \| good	0.141 \| good
2026-05-22T19:00:00.000Z	38 \| good	6.561 \| good	29 \| good	35.09 \| good	0.455 \| good	3.103 \| good	0.138 \| good
2026-05-22T20:00:00.000Z	38 \| good	7.059 \| good	31.03 \| good	33.649 \| good	0.426 \| good	2.939 \| good	0.135 \| good
2026-05-22T21:00:00.000Z	38 \| good	6.806 \| good	30.006 \| good	30.662 \| good	0.405 \| good	3.141 \| good	0.134 \| good
2026-05-22T22:00:00.000Z	28 \| good	5.366 \| good	22.987 \| good	29.6 \| good	0.391 \| good	3.763 \| good	0.137 \| good
2026-05-22T23:00:00.000Z	38 \| good	6.711 \| good	29.936 \| good	29.261 \| good	0.376 \| good	4.673 \| good	0.142 \| good
2026-05-23T00:00:00.000Z	32 \| good	4.171 \| good	17.984 \| good	34.987 \| good	0.37 \| good	5.54 \| good	0.143 \| good
2026-05-23T01:00:00.000Z	33 \| good	3.653 \| good	15.958 \| good	35.772 \| good	0.368 \| good	5.693 \| good	0.138 \| good
2026-05-23T02:00:00.000Z	31 \| good	3.195 \| good	13.948 \| good	34.245 \| good	0.372 \| good	5.626 \| good	0.135 \| good
2026-05-23T03:00:00.000Z	31 \| good	2.885 \| good	11.956 \| good	32.897 \| good	0.372 \| good	5.575 \| good	0.131 \| good
2026-05-23T04:00:00.000Z	28 \| good	3.014 \| good	12.012 \| good	30.471 \| good	0.365 \| good	5.214 \| good	0.128 \| good
2026-05-23T05:00:00.000Z	29 \| good	2.933 \| good	11.982 \| good	31.383 \| good	0.349 \| good	4.403 \| good	0.124 \| good
2026-05-23T06:00:00.000Z	32 \| good	2.435 \| good	9.962 \| good	35.101 \| good	0.337 \| good	3.935 \| good	0.121 \| good
2026-05-23T07:00:00.000Z	33 \| good	2.667 \| good	10.97 \| good	36.291 \| good	0.322 \| good	3.603 \| good	0.118 \| good
2026-05-23T08:00:00.000Z	32 \| good	2.95 \| good	12.023 \| good	35.096 \| good	0.306 \| good	3.347 \| good	0.116 \| good
2026-05-23T09:00:00.000Z	28 \| good	4.592 \| good	19.982 \| good	30.282 \| good	0.292 \| good	3.086 \| good	0.114 \| good
2026-05-23T10:00:00.000Z	27 \| good	4.937 \| good	21.032 \| good	26.993 \| good	0.279 \| good	2.914 \| good	0.113 \| good
2026-05-23T11:00:00.000Z	27 \| good	4.536 \| good	19.956 \| good	28.269 \| good	0.267 \| good	2.95 \| good	0.113 \| good
2026-05-23T12:00:00.000Z	29 \| good	3.735 \| good	16.007 \| good	30.855 \| good	0.266 \| good	3.717 \| good	0.118 \| good
2026-05-23T13:00:00.000Z	29 \| good	3.277 \| good	14.014 \| good	30.531 \| good	0.264 \| good	4.381 \| good	0.125 \| good
2026-05-23T14:00:00.000Z	31 \| good	3.092 \| good	12.011 \| good	32.826 \| good	0.262 \| good	4.526 \| good	0.128 \| good
2026-05-23T15:00:00.000Z	32 \| good	3.281 \| good	14.015 \| good	34.7 \| good	0.256 \| good	4.233 \| good	0.126 \| good
2026-05-23T16:00:00.000Z	31 \| good	3.355 \| good	14.95 \| good	32.698 \| good	0.246 \| good	3.742 \| good	0.123 \| good
2026-05-23T17:00:00.000Z	31 \| good	3.695 \| good	16.015 \| good	32.659 \| good	0.237 \| good	3.294 \| good	0.12 \| good
2026-05-23T18:00:00.000Z	30 \| good	3.735 \| good	16.02 \| good	31.522 \| good	0.218 \| good	2.989 \| good	0.118 \| good
2026-05-23T19:00:00.000Z	28 \| good	4.145 \| good	18.009 \| good	29.532 \| good	0.204 \| good	2.792 \| good	0.117 \| good

Horsham

Empower business decisions with accurate air quality data

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

0.30ppm

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 08:00:00, 2026-05-20.

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 2026-05-21.

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

The air quality in Horsham, Pennsylvania right now is Good, with an AQI of 25.

What pollutant is most frequently found in Horsham, Pennsylvania?

In Horsham, Pennsylvania, O3 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 4.17 μg/m³.

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

Horsham, Pennsylvania currently has a PM₁₀ concentration of 19.748 μg/m³.

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

The current carbon monoxide (CO) level in Horsham, Pennsylvania is 0.305 ppm.

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

The current sulfur dioxide (SO₂) concentration in Horsham, Pennsylvania is 0.788 ppb.

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

Horsham, Pennsylvania currently has an ozone (O₃) concentration of 26.713 ppm.

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

The current level of nitrogen dioxide (NO₂) in Horsham, Pennsylvania is 8.744 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-05-19T20:00:00.000Z	64 \| moderate	14.192 \| fine	65.062 \| fine	59.075 \| fine	0.906 \| good	10.511 \| good	0.292 \| good
2026-05-19T21:00:00.000Z	67 \| moderate	13.263 \| fine	55.155 \| fine	60.078 \| fine	0.956 \| good	11.102 \| good	0.315 \| good
2026-05-19T22:00:00.000Z	80 \| moderate	12.037 \| good	46.552 \| good	63.834 \| fine	1.144 \| good	8.385 \| good	0.315 \| good
2026-05-19T23:00:00.000Z	54 \| moderate	11.132 \| good	49.862 \| good	55.787 \| fine	1.145 \| good	8.151 \| good	0.346 \| good
2026-05-20T00:00:00.000Z	58 \| moderate	9.283 \| good	38.641 \| good	57.386 \| fine	1.262 \| good	11.16 \| good	0.369 \| good
2026-05-20T01:00:00.000Z	64 \| moderate	15.56 \| fine	77.648 \| fine	51.298 \| good	1.159 \| good	11.604 \| good	0.374 \| good
2026-05-20T02:00:00.000Z	49 \| good	8.75 \| good	42.476 \| good	48.03 \| good	1.306 \| good	9.439 \| good	0.323 \| good
2026-05-20T03:00:00.000Z	52 \| moderate	10.381 \| good	41.074 \| good	45.389 \| good	0.977 \| good	18.574 \| good	0.416 \| good
2026-05-20T04:00:00.000Z	56 \| moderate	11.728 \| good	47.14 \| good	43.574 \| good	0.931 \| good	18.87 \| good	0.416 \| good
2026-05-20T05:00:00.000Z	44 \| good	7.866 \| good	24.387 \| good	40.018 \| good	1.092 \| good	20.964 \| good	0.389 \| good
2026-05-20T06:00:00.000Z	56 \| moderate	12.411 \| fine	53.379 \| good	24.64 \| good	1.096 \| good	24.284 \| good	0.378 \| good
2026-05-20T07:00:00.000Z	58 \| moderate	13.198 \| fine	60.103 \| fine	38.506 \| good	1.13 \| good	20.682 \| good	0.355 \| good
2026-05-20T08:00:00.000Z	62 \| moderate	14.739 \| fine	61.29 \| fine	30.736 \| good	0.872 \| good	17.641 \| good	0.316 \| good
2026-05-20T09:00:00.000Z	64 \| moderate	16.061 \| fine	66.344 \| fine	33.925 \| good	0.868 \| good	16.297 \| good	0.323 \| good
2026-05-20T10:00:00.000Z	58 \| moderate	13.341 \| fine	47.543 \| good	21.912 \| good	0.736 \| good	18.288 \| good	0.347 \| good
2026-05-20T11:00:00.000Z	60 \| moderate	14.171 \| fine	55.916 \| fine	22.575 \| good	0.472 \| good	19.033 \| good	0.397 \| good
2026-05-20T12:00:00.000Z	56 \| moderate	12.106 \| fine	50.352 \| good	26.285 \| good	0.85 \| good	16.896 \| good	0.408 \| good
2026-05-20T13:00:00.000Z	62 \| moderate	14.854 \| fine	59.387 \| fine	31.524 \| good	1.304 \| good	26.933 \| good	0.485 \| good
2026-05-20T14:00:00.000Z	54 \| moderate	10.921 \| good	36.932 \| good	36.653 \| good	1.01 \| good	15.729 \| good	0.381 \| good
2026-05-20T15:00:00.000Z	56 \| moderate	12.142 \| fine	51.181 \| good	43.226 \| good	0.93 \| good	12.56 \| good	0.338 \| good
2026-05-20T16:00:00.000Z	54 \| moderate	10.766 \| good	39.057 \| good	47.964 \| good	0.927 \| good	11.373 \| good	0.277 \| good
2026-05-20T17:00:00.000Z	49 \| good	8.63 \| good	33.045 \| good	52.002 \| good	0.892 \| good	10.624 \| good	0.277 \| good
2026-05-20T18:00:00.000Z	48 \| good	8.462 \| good	35.259 \| good	52.414 \| good	0.847 \| good	12.315 \| good	0.323 \| good
2026-05-20T19:00:00.000Z	54 \| moderate	9.985 \| good	44.929 \| good	55.756 \| fine	0.918 \| good	9.781 \| good	0.303 \| good
2026-05-20T20:00:00.000Z	71 \| moderate	8.445 \| good	32.592 \| good	60.762 \| fine	0.919 \| good	10.011 \| good	0.273 \| good
2026-05-20T21:00:00.000Z	67 \| moderate	7.514 \| good	32.837 \| good	59.834 \| fine	0.992 \| good	9.548 \| good	0.35 \| good
2026-05-20T22:00:00.000Z	56 \| moderate	11.538 \| good	50.75 \| good	56.128 \| fine	1.06 \| good	10.612 \| good	0.35 \| good
2026-05-20T23:00:00.000Z	54 \| moderate	10.98 \| good	34.361 \| good	54.294 \| good	2.324 \| good	4.65 \| good	0.227 \| good
2026-05-21T00:00:00.000Z	56 \| moderate	11.757 \| good	52.723 \| good	53.795 \| good	1.794 \| good	7.993 \| good	0.234 \| good
2026-05-21T01:00:00.000Z	54 \| moderate	10.504 \| good	44.155 \| good	35.789 \| good	1.032 \| good	8.048 \| good	0.2 \| good
2026-05-21T02:00:00.000Z	49 \| good	9.382 \| good	39.091 \| good	29.519 \| good	0.87 \| good	21.177 \| good	0.37 \| good
2026-05-21T03:00:00.000Z	52 \| moderate	10.385 \| good	52.247 \| good	28.224 \| good	0.846 \| good	9.53 \| good	0.25 \| good
2026-05-21T04:00:00.000Z	38 \| good	6.799 \| good	25.342 \| good	18.647 \| good	0.809 \| good	12.916 \| good	0.346 \| good
2026-05-21T05:00:00.000Z	33 \| good	5.789 \| good	22.984 \| good	17.998 \| good	0.826 \| good	11.114 \| good	0.343 \| good
2026-05-21T06:00:00.000Z	38 \| good	6.585 \| good	28.335 \| good	19.168 \| good	0.878 \| good	10.254 \| good	0.32 \| good
2026-05-21T07:00:00.000Z	38 \| good	7.357 \| good	15.804 \| good	18.806 \| good	0.958 \| good	9.375 \| good	0.297 \| good
2026-05-21T08:00:00.000Z	33 \| good	5.844 \| good	24.227 \| good	18.218 \| good	0.857 \| good	9.183 \| good	0.254 \| good
2026-05-21T09:00:00.000Z	27 \| good	4.743 \| good	16.23 \| good	18.023 \| good	0.88 \| good	7.669 \| good	0.254 \| good
2026-05-21T10:00:00.000Z	27 \| good	4.803 \| good	17.997 \| good	19.842 \| good	0.997 \| good	9.065 \| good	0.285 \| good
2026-05-21T11:00:00.000Z	24 \| good	3.563 \| good	13.932 \| good	26.369 \| good	0.818 \| good	12.398 \| good	0.335 \| good
2026-05-21T12:00:00.000Z	28 \| good	4.091 \| good	12.175 \| good	30.138 \| good	0.744 \| good	14.629 \| good	0.355 \| good
2026-05-21T13:00:00.000Z	26 \| good	3.038 \| good	11.732 \| good	28.45 \| good	0.776 \| good	13.473 \| good	0.3 \| good
2026-05-21T14:00:00.000Z	25 \| good	3.247 \| good	19.817 \| good	26.634 \| good	0.751 \| good	11.274 \| good	0.277 \| good
2026-05-21T15:00:00.000Z	24 \| good	3.376 \| good	11.185 \| good	26.422 \| good	0.688 \| good	10.431 \| good	0.308 \| good
2026-05-21T16:00:00.000Z	26 \| good	4.134 \| good	10.754 \| good	28.352 \| good	0.771 \| good	10.571 \| good	0.288 \| good
2026-05-21T17:00:00.000Z	27 \| good	5.166 \| good	28.989 \| good	25.948 \| good	0.834 \| good	10.191 \| good	0.28 \| good
2026-05-21T18:00:00.000Z	27 \| good	5.002 \| good	25.359 \| good	27.86 \| good	0.836 \| good	9.142 \| good	0.303 \| good
2026-05-21T19:00:00.000Z	27 \| good	2.068 \| good	10.269 \| good	29.003 \| good	0.899 \| good	10.487 \| good	0.303 \| good
2026-05-21T19:00:00.000Z	25 \| good	4.17 \| good	19.748 \| good	26.713 \| good	0.788 \| good	8.744 \| good	0.305 \| good
2026-05-21T20:00:00.000Z	38 \| good	6.909 \| good	30.944 \| good	29.721 \| good	0.48 \| good	5.971 \| good	0.174 \| good
2026-05-21T21:00:00.000Z	49 \| good	8.539 \| good	36.955 \| good	30.228 \| good	0.523 \| good	6.489 \| good	0.176 \| good
2026-05-21T22:00:00.000Z	49 \| good	9.423 \| good	41.891 \| good	29.258 \| good	0.552 \| good	7.677 \| good	0.185 \| good
2026-05-21T23:00:00.000Z	56 \| moderate	11.517 \| good	50.927 \| good	25.689 \| good	0.56 \| good	9.931 \| good	0.203 \| good
2026-05-22T00:00:00.000Z	52 \| moderate	10.186 \| good	44.874 \| good	20.649 \| good	0.588 \| good	12.203 \| good	0.213 \| good
2026-05-22T01:00:00.000Z	56 \| moderate	12.44 \| fine	56.698 \| fine	15.508 \| good	0.62 \| good	13.877 \| good	0.219 \| good
2026-05-22T02:00:00.000Z	60 \| moderate	13.816 \| fine	62.78 \| fine	13.616 \| good	0.647 \| good	14.032 \| good	0.216 \| good
2026-05-22T03:00:00.000Z	60 \| moderate	14.071 \| fine	62.868 \| fine	14.684 \| good	0.674 \| good	14.147 \| good	0.213 \| good
2026-05-22T04:00:00.000Z	62 \| moderate	14.775 \| fine	66.798 \| fine	13.995 \| good	0.681 \| good	14.034 \| good	0.212 \| good
2026-05-22T05:00:00.000Z	62 \| moderate	14.952 \| fine	66.905 \| fine	14.834 \| good	0.656 \| good	12.997 \| good	0.206 \| good
2026-05-22T06:00:00.000Z	62 \| moderate	14.953 \| fine	66.885 \| fine	17.183 \| good	0.625 \| good	12.262 \| good	0.2 \| good
2026-05-22T07:00:00.000Z	60 \| moderate	13.799 \| fine	62.849 \| fine	19.313 \| good	0.604 \| good	11.707 \| good	0.193 \| good
2026-05-22T08:00:00.000Z	54 \| moderate	11.049 \| good	49.111 \| good	21.897 \| good	0.59 \| good	11.324 \| good	0.186 \| good
2026-05-22T09:00:00.000Z	49 \| good	9.169 \| good	41.167 \| good	23.201 \| good	0.581 \| good	11.091 \| good	0.18 \| good
2026-05-22T10:00:00.000Z	44 \| good	7.809 \| good	34.183 \| good	22.947 \| good	0.596 \| good	10.553 \| good	0.171 \| good
2026-05-22T11:00:00.000Z	38 \| good	7.233 \| good	32.096 \| good	26.606 \| good	0.613 \| good	9.226 \| good	0.162 \| good
2026-05-22T12:00:00.000Z	33 \| good	5.808 \| good	25.036 \| good	29.477 \| good	0.624 \| good	8.963 \| good	0.161 \| good
2026-05-22T13:00:00.000Z	30 \| good	5.242 \| good	22.931 \| good	31.963 \| good	0.639 \| good	8.38 \| good	0.161 \| good
2026-05-22T14:00:00.000Z	34 \| good	4.806 \| good	20.987 \| good	36.921 \| good	0.624 \| good	7.145 \| good	0.157 \| good
2026-05-22T15:00:00.000Z	35 \| good	4.997 \| good	21.956 \| good	38.216 \| good	0.598 \| good	5.899 \| good	0.154 \| good
2026-05-22T16:00:00.000Z	36 \| good	5.865 \| good	25.044 \| good	38.958 \| good	0.562 \| good	4.672 \| good	0.15 \| good
2026-05-22T17:00:00.000Z	36 \| good	6.374 \| good	27.992 \| good	38.502 \| good	0.528 \| good	3.894 \| good	0.146 \| good
2026-05-22T18:00:00.000Z	35 \| good	6.467 \| good	28.961 \| good	37.517 \| good	0.488 \| good	3.325 \| good	0.141 \| good
2026-05-22T19:00:00.000Z	38 \| good	6.561 \| good	29 \| good	35.09 \| good	0.455 \| good	3.103 \| good	0.138 \| good
2026-05-22T20:00:00.000Z	38 \| good	7.059 \| good	31.03 \| good	33.649 \| good	0.426 \| good	2.939 \| good	0.135 \| good
2026-05-22T21:00:00.000Z	38 \| good	6.806 \| good	30.006 \| good	30.662 \| good	0.405 \| good	3.141 \| good	0.134 \| good
2026-05-22T22:00:00.000Z	28 \| good	5.366 \| good	22.987 \| good	29.6 \| good	0.391 \| good	3.763 \| good	0.137 \| good
2026-05-22T23:00:00.000Z	38 \| good	6.711 \| good	29.936 \| good	29.261 \| good	0.376 \| good	4.673 \| good	0.142 \| good
2026-05-23T00:00:00.000Z	32 \| good	4.171 \| good	17.984 \| good	34.987 \| good	0.37 \| good	5.54 \| good	0.143 \| good
2026-05-23T01:00:00.000Z	33 \| good	3.653 \| good	15.958 \| good	35.772 \| good	0.368 \| good	5.693 \| good	0.138 \| good
2026-05-23T02:00:00.000Z	31 \| good	3.195 \| good	13.948 \| good	34.245 \| good	0.372 \| good	5.626 \| good	0.135 \| good
2026-05-23T03:00:00.000Z	31 \| good	2.885 \| good	11.956 \| good	32.897 \| good	0.372 \| good	5.575 \| good	0.131 \| good
2026-05-23T04:00:00.000Z	28 \| good	3.014 \| good	12.012 \| good	30.471 \| good	0.365 \| good	5.214 \| good	0.128 \| good
2026-05-23T05:00:00.000Z	29 \| good	2.933 \| good	11.982 \| good	31.383 \| good	0.349 \| good	4.403 \| good	0.124 \| good
2026-05-23T06:00:00.000Z	32 \| good	2.435 \| good	9.962 \| good	35.101 \| good	0.337 \| good	3.935 \| good	0.121 \| good
2026-05-23T07:00:00.000Z	33 \| good	2.667 \| good	10.97 \| good	36.291 \| good	0.322 \| good	3.603 \| good	0.118 \| good
2026-05-23T08:00:00.000Z	32 \| good	2.95 \| good	12.023 \| good	35.096 \| good	0.306 \| good	3.347 \| good	0.116 \| good
2026-05-23T09:00:00.000Z	28 \| good	4.592 \| good	19.982 \| good	30.282 \| good	0.292 \| good	3.086 \| good	0.114 \| good
2026-05-23T10:00:00.000Z	27 \| good	4.937 \| good	21.032 \| good	26.993 \| good	0.279 \| good	2.914 \| good	0.113 \| good
2026-05-23T11:00:00.000Z	27 \| good	4.536 \| good	19.956 \| good	28.269 \| good	0.267 \| good	2.95 \| good	0.113 \| good
2026-05-23T12:00:00.000Z	29 \| good	3.735 \| good	16.007 \| good	30.855 \| good	0.266 \| good	3.717 \| good	0.118 \| good
2026-05-23T13:00:00.000Z	29 \| good	3.277 \| good	14.014 \| good	30.531 \| good	0.264 \| good	4.381 \| good	0.125 \| good
2026-05-23T14:00:00.000Z	31 \| good	3.092 \| good	12.011 \| good	32.826 \| good	0.262 \| good	4.526 \| good	0.128 \| good
2026-05-23T15:00:00.000Z	32 \| good	3.281 \| good	14.015 \| good	34.7 \| good	0.256 \| good	4.233 \| good	0.126 \| good
2026-05-23T16:00:00.000Z	31 \| good	3.355 \| good	14.95 \| good	32.698 \| good	0.246 \| good	3.742 \| good	0.123 \| good
2026-05-23T17:00:00.000Z	31 \| good	3.695 \| good	16.015 \| good	32.659 \| good	0.237 \| good	3.294 \| good	0.12 \| good
2026-05-23T18:00:00.000Z	30 \| good	3.735 \| good	16.02 \| good	31.522 \| good	0.218 \| good	2.989 \| good	0.118 \| good
2026-05-23T19:00:00.000Z	28 \| good	4.145 \| good	18.009 \| good	29.532 \| good	0.204 \| good	2.792 \| good	0.117 \| 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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Air quality levels in US

Frequently asked questions

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

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

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

What is the current level of ozone (O3) 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?

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

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

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

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