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

Horsham, Pennsylvania currently has a PM10 concentration of 17.804 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Horsham, Pennsylvania is 0.177 ppb.

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

Horsham, Pennsylvania currently has an ozone (O3) concentration of 53.248 ppm.

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

The current level of nitrogen dioxide (NO2) in Horsham, Pennsylvania is 4.468 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 3.906 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)

3.91 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.80 μg/m³

155

255

425

605+

Ozone (O₃)

53.25 ppb

201

201+

Sulfur Dioxide (SO₂)

0.18 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.47 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 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
2026-07-21T23:00:00.000Z	52 \| moderate	9.607 \| good	36.288 \| good	37.2 \| good	0.336 \| good	7.788 \| good	0.406 \| good
2026-07-22T00:00:00.000Z	44 \| good	8.32 \| good	32.149 \| good	36.552 \| good	0.37 \| good	7.883 \| good	0.388 \| good
2026-07-22T01:00:00.000Z	54 \| moderate	10.594 \| good	41.817 \| good	42.141 \| good	0.374 \| good	8.816 \| good	0.431 \| good
2026-07-22T02:00:00.000Z	44 \| good	8.465 \| good	44.932 \| good	39.623 \| good	0.37 \| good	7.198 \| good	0.349 \| good
2026-07-22T03:00:00.000Z	38 \| good	6.52 \| good	23.862 \| good	35.341 \| good	0.384 \| good	8.93 \| good	0.354 \| good
2026-07-22T04:00:00.000Z	38 \| good	7.47 \| good	32.302 \| good	35.197 \| good	0.371 \| good	10.159 \| good	0.354 \| good
2026-07-22T05:00:00.000Z	38 \| good	6.954 \| good	32.335 \| good	31.774 \| good	0.405 \| good	9.714 \| good	0.336 \| good
2026-07-22T06:00:00.000Z	38 \| good	6.509 \| good	21.838 \| good	32.918 \| good	0.507 \| good	5.553 \| good	0.319 \| good
2026-07-22T07:00:00.000Z	33 \| good	6.08 \| good	21.371 \| good	31.231 \| good	0.507 \| good	5.541 \| good	0.319 \| good
2026-07-22T08:00:00.000Z	28 \| good	5.38 \| good	21.194 \| good	29.651 \| good	0.368 \| good	5.085 \| good	0.26 \| good
2026-07-22T09:00:00.000Z	28 \| good	5.234 \| good	22.966 \| good	30.193 \| good	0.372 \| good	6.488 \| good	0.288 \| good
2026-07-22T10:00:00.000Z	27 \| good	4.46 \| good	19.506 \| good	28.69 \| good	0.513 \| good	10.474 \| good	0.288 \| good
2026-07-22T11:00:00.000Z	22 \| good	3.533 \| good	13.553 \| good	23.825 \| good	0.513 \| good	7.931 \| good	0.336 \| good
2026-07-22T12:00:00.000Z	27 \| good	4.872 \| good	16.001 \| good	28.061 \| good	0.564 \| good	9.978 \| good	0.42 \| good
2026-07-22T13:00:00.000Z	27 \| good	4.999 \| good	18.991 \| good	27.802 \| good	0.515 \| good	14.512 \| good	0.42 \| good
2026-07-22T14:00:00.000Z	33 \| good	6.116 \| good	27.319 \| good	26.999 \| good	0.526 \| good	10.315 \| good	0.386 \| good
2026-07-22T15:00:00.000Z	33 \| good	6.474 \| good	29.628 \| good	33.022 \| good	0.51 \| good	9.596 \| good	0.385 \| good
2026-07-22T16:00:00.000Z	44 \| good	7.997 \| good	34.035 \| good	34.946 \| good	0.441 \| good	8.753 \| good	0.385 \| good
2026-07-22T17:00:00.000Z	44 \| good	8.443 \| good	40.973 \| good	40.614 \| good	0.406 \| good	7.958 \| good	0.385 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	9.829 \| good	39.857 \| good	44.094 \| good	0.429 \| good	7.205 \| good	0.365 \| good
2026-07-22T19:00:00.000Z	54 \| moderate	10.747 \| good	46.679 \| good	45.673 \| good	0.428 \| good	7.233 \| good	0.365 \| good
2026-07-22T20:00:00.000Z	52 \| moderate	10.077 \| good	40.99 \| good	45.576 \| good	0.403 \| good	7.106 \| good	0.365 \| good
2026-07-22T21:00:00.000Z	54 \| moderate	10.985 \| good	38.047 \| good	45.429 \| good	0.399 \| good	9.249 \| good	0.365 \| good
2026-07-22T22:00:00.000Z	54 \| moderate	10.732 \| good	45.219 \| good	48.659 \| good	0.395 \| good	7.575 \| good	0.323 \| good
2026-07-22T23:00:00.000Z	49 \| good	9.395 \| good	45.851 \| good	43.977 \| good	0.491 \| good	4.769 \| good	0.352 \| good
2026-07-23T00:00:00.000Z	52 \| moderate	9.589 \| good	38.032 \| good	45.734 \| good	0.434 \| good	5.492 \| good	0.335 \| good
2026-07-23T01:00:00.000Z	52 \| moderate	9.629 \| good	39.687 \| good	41.273 \| good	0.374 \| good	5.047 \| good	0.335 \| good
2026-07-23T02:00:00.000Z	52 \| moderate	9.862 \| good	50.635 \| good	35.977 \| good	0.37 \| good	4.454 \| good	0.306 \| good
2026-07-23T03:00:00.000Z	19 \| good	1.648 \| good	6.544 \| good	20.449 \| good	0.611 \| good	7.332 \| good	0.202 \| good
2026-07-23T04:00:00.000Z	38 \| good	6.535 \| good	28.334 \| good	29.977 \| good	0.367 \| good	4.032 \| good	0.255 \| good
2026-07-23T05:00:00.000Z	30 \| good	5.492 \| good	24.247 \| good	31.649 \| good	0.368 \| good	3.933 \| good	0.255 \| good
2026-07-23T06:00:00.000Z	29 \| good	4.203 \| good	18.512 \| good	31.196 \| good	0.371 \| good	3.053 \| good	0.237 \| good
2026-07-23T07:00:00.000Z	29 \| good	3.816 \| good	14.901 \| good	30.861 \| good	0.409 \| good	2.836 \| good	0.237 \| good
2026-07-23T08:00:00.000Z	25 \| good	4 \| good	17.175 \| good	26.845 \| good	0.383 \| good	2.832 \| good	0.237 \| good
2026-07-23T09:00:00.000Z	27 \| good	4.61 \| good	20.224 \| good	27.552 \| good	0.49 \| good	3.599 \| good	0.237 \| good
2026-07-23T10:00:00.000Z	26 \| good	3.3 \| good	14.324 \| good	27.776 \| good	0.489 \| good	6.124 \| good	0.241 \| good
2026-07-23T11:00:00.000Z	23 \| good	2.714 \| good	10.001 \| good	25.295 \| good	0.45 \| good	10.637 \| good	0.293 \| good
2026-07-23T12:00:00.000Z	20 \| good	3.347 \| good	14.136 \| good	21.506 \| good	0.393 \| good	12.591 \| good	0.343 \| good
2026-07-23T13:00:00.000Z	24 \| good	3.311 \| good	13.933 \| good	26.371 \| good	0.528 \| good	11.329 \| good	0.308 \| good
2026-07-23T14:00:00.000Z	27 \| good	5.018 \| good	22.561 \| good	29.019 \| good	0.504 \| good	10.03 \| good	0.262 \| good
2026-07-23T15:00:00.000Z	28 \| good	4.168 \| good	18.11 \| good	30.085 \| good	0.409 \| good	8.034 \| good	0.258 \| good
2026-07-23T16:00:00.000Z	32 \| good	3.825 \| good	16.562 \| good	35.014 \| good	0.162 \| good	7.274 \| good	0.258 \| good
2026-07-23T17:00:00.000Z	36 \| good	4.673 \| good	18.255 \| good	39.454 \| good	0.168 \| good	5.911 \| good	0.212 \| good
2026-07-23T18:00:00.000Z	37 \| good	4.835 \| good	19.351 \| good	40.219 \| good	0.337 \| good	4.868 \| good	0.241 \| good
2026-07-23T19:00:00.000Z	43 \| good	4.609 \| good	20.881 \| good	45.769 \| good	0.352 \| good	4.027 \| good	0.244 \| good
2026-07-23T20:00:00.000Z	44 \| good	4.453 \| good	19.267 \| good	47.081 \| good	0.158 \| good	2.702 \| good	0.244 \| good
2026-07-23T21:00:00.000Z	48 \| good	4.638 \| good	19.743 \| good	52.017 \| good	0.158 \| good	3.929 \| good	0.244 \| good
2026-07-23T22:00:00.000Z	49 \| good	3.906 \| good	17.804 \| good	53.248 \| good	0.177 \| good	4.468 \| good	0.236 \| good
2026-07-23T23:00:00.000Z	56 \| moderate	11.599 \| good	51.712 \| good	51.343 \| good	0.528 \| good	2.047 \| good	0.142 \| good
2026-07-24T00:00:00.000Z	54 \| moderate	10.52 \| good	46.753 \| good	42.222 \| good	0.508 \| good	5.165 \| good	0.163 \| good
2026-07-24T01:00:00.000Z	54 \| moderate	10.511 \| good	46.507 \| good	35.512 \| good	0.466 \| good	7.529 \| good	0.178 \| good
2026-07-24T02:00:00.000Z	49 \| good	8.544 \| good	37.654 \| good	35.046 \| good	0.433 \| good	8.063 \| good	0.18 \| good
2026-07-24T03:00:00.000Z	49 \| good	9.058 \| good	40.355 \| good	30.263 \| good	0.421 \| good	9.618 \| good	0.187 \| good
2026-07-24T04:00:00.000Z	54 \| moderate	10.705 \| good	47.458 \| good	26.947 \| good	0.413 \| good	11.696 \| good	0.199 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	9.908 \| good	44.096 \| good	20.354 \| good	0.397 \| good	12.824 \| good	0.208 \| good
2026-07-24T06:00:00.000Z	52 \| moderate	10.176 \| good	45.207 \| good	18.007 \| good	0.385 \| good	13.573 \| good	0.21 \| good
2026-07-24T07:00:00.000Z	52 \| moderate	10.414 \| good	46.43 \| good	16.399 \| good	0.377 \| good	14.06 \| good	0.209 \| good
2026-07-24T08:00:00.000Z	49 \| good	9.039 \| good	39.984 \| good	16.492 \| good	0.377 \| good	14.643 \| good	0.21 \| good
2026-07-24T09:00:00.000Z	44 \| good	7.699 \| good	33.969 \| good	18.69 \| good	0.377 \| good	15.588 \| good	0.212 \| good
2026-07-24T10:00:00.000Z	38 \| good	6.834 \| good	30.425 \| good	18.214 \| good	0.376 \| good	16.723 \| good	0.222 \| good
2026-07-24T11:00:00.000Z	22 \| good	4.218 \| good	18.598 \| good	21.279 \| good	0.368 \| good	14.906 \| good	0.232 \| good
2026-07-24T12:00:00.000Z	24 \| good	3.379 \| good	14.948 \| good	25.679 \| good	0.467 \| good	11.924 \| good	0.225 \| good
2026-07-24T13:00:00.000Z	27 \| good	5.008 \| good	21.463 \| good	29.392 \| good	0.694 \| good	6.292 \| good	0.177 \| good
2026-07-24T14:00:00.000Z	33 \| good	5.892 \| good	25.974 \| good	32.812 \| good	0.731 \| good	3.268 \| good	0.156 \| good
2026-07-24T15:00:00.000Z	35 \| good	6.398 \| good	28.221 \| good	37.996 \| good	0.682 \| good	1.759 \| good	0.149 \| good
2026-07-24T16:00:00.000Z	42 \| good	6.407 \| good	28.354 \| good	44.615 \| good	0.625 \| good	1.241 \| good	0.149 \| good
2026-07-24T17:00:00.000Z	44 \| good	7.547 \| good	33.36 \| good	47.222 \| good	0.596 \| good	1.083 \| good	0.149 \| good
2026-07-24T18:00:00.000Z	49 \| good	9.208 \| good	41.218 \| good	48.255 \| good	0.581 \| good	1.069 \| good	0.15 \| good
2026-07-24T19:00:00.000Z	43 \| good	4.238 \| good	18.5 \| good	46.208 \| good	0.569 \| good	1.121 \| good	0.151 \| good
2026-07-24T20:00:00.000Z	42 \| good	4.255 \| good	18.8 \| good	44.807 \| good	0.552 \| good	1.173 \| good	0.152 \| good
2026-07-24T21:00:00.000Z	42 \| good	5.057 \| good	21.754 \| good	45.291 \| good	0.531 \| good	1.287 \| good	0.153 \| good
2026-07-24T22:00:00.000Z	42 \| good	4.397 \| good	19.346 \| good	45.149 \| good	0.507 \| good	1.575 \| good	0.154 \| good
2026-07-24T23:00:00.000Z	37 \| good	5.723 \| good	24.851 \| good	40.027 \| good	0.473 \| good	2.168 \| good	0.155 \| good
2026-07-25T00:00:00.000Z	44 \| good	7.707 \| good	33.845 \| good	34.77 \| good	0.435 \| good	3.334 \| good	0.158 \| good
2026-07-25T01:00:00.000Z	44 \| good	7.884 \| good	34.863 \| good	26.412 \| good	0.395 \| good	3.974 \| good	0.155 \| good
2026-07-25T02:00:00.000Z	52 \| moderate	9.639 \| good	42.836 \| good	22.91 \| good	0.364 \| good	4.763 \| good	0.152 \| good
2026-07-25T03:00:00.000Z	49 \| good	8.646 \| good	38.11 \| good	20.734 \| good	0.359 \| good	5.704 \| good	0.149 \| good
2026-07-25T04:00:00.000Z	38 \| good	7.028 \| good	30.954 \| good	18.341 \| good	0.367 \| good	7.768 \| good	0.155 \| good
2026-07-25T05:00:00.000Z	22 \| good	4.431 \| good	19.396 \| good	15.926 \| good	0.385 \| good	9.441 \| good	0.164 \| good
2026-07-25T06:00:00.000Z	16 \| good	1.58 \| good	6.459 \| good	17.255 \| good	0.411 \| good	11.865 \| good	0.174 \| good
2026-07-25T07:00:00.000Z	18 \| good	1.286 \| good	5.017 \| good	18.581 \| good	0.449 \| good	14.068 \| good	0.182 \| good
2026-07-25T08:00:00.000Z	17 \| good	0.723 \| good	2.354 \| good	18.24 \| good	0.495 \| good	13.753 \| good	0.181 \| good
2026-07-25T09:00:00.000Z	13 \| good	1.041 \| good	4.211 \| good	14.076 \| good	0.538 \| good	14.022 \| good	0.183 \| good
2026-07-25T10:00:00.000Z	15 \| good	0.932 \| good	3.622 \| good	16.099 \| good	0.568 \| good	14.479 \| good	0.187 \| good
2026-07-25T11:00:00.000Z	15 \| good	0.805 \| good	2.863 \| good	16.081 \| good	0.58 \| good	13.596 \| good	0.193 \| good
2026-07-25T12:00:00.000Z	15 \| good	0.884 \| good	3.457 \| good	16.116 \| good	0.671 \| good	9.461 \| good	0.178 \| good
2026-07-25T13:00:00.000Z	19 \| good	1.252 \| good	5.091 \| good	19.935 \| good	0.805 \| good	4.846 \| good	0.15 \| good
2026-07-25T14:00:00.000Z	25 \| good	2.032 \| good	8.129 \| good	26.997 \| good	0.706 \| good	2.594 \| good	0.141 \| good
2026-07-25T15:00:00.000Z	31 \| good	2.523 \| good	10.219 \| good	34.381 \| good	0.567 \| good	1.541 \| good	0.141 \| good
2026-07-25T16:00:00.000Z	39 \| good	3.582 \| good	15.971 \| good	42.276 \| good	0.431 \| good	1.035 \| good	0.144 \| good
2026-07-25T17:00:00.000Z	42 \| good	4.109 \| good	18.104 \| good	45.278 \| good	0.375 \| good	0.875 \| good	0.143 \| good
2026-07-25T18:00:00.000Z	45 \| good	5.518 \| good	23.723 \| good	48.657 \| good	0.344 \| good	0.812 \| good	0.143 \| good
2026-07-25T19:00:00.000Z	49 \| good	6.498 \| good	29.081 \| good	52.848 \| good	0.331 \| good	0.812 \| good	0.142 \| good
2026-07-25T20:00:00.000Z	51 \| moderate	5.805 \| good	25.115 \| good	55.275 \| fine	0.324 \| good	0.826 \| good	0.142 \| good
2026-07-25T21:00:00.000Z	50 \| good	5.857 \| good	25.578 \| good	54.237 \| good	0.323 \| good	0.902 \| good	0.141 \| good
2026-07-25T22:00:00.000Z	48 \| good	5.663 \| good	24.537 \| good	52.092 \| good	0.326 \| good	1.117 \| good	0.142 \| good

Horsham

Empower business decisions with accurate air quality data

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

0.21ppm

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 10:00:00, 2026-07-22.

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 2026-07-23.

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

The air quality in Horsham, Pennsylvania right now is Good, with an AQI of 49.

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 3.906 μg/m³.

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

Horsham, Pennsylvania currently has a PM₁₀ concentration of 17.804 μg/m³.

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

The current carbon monoxide (CO) level in Horsham, Pennsylvania is 0.236 ppm.

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

The current sulfur dioxide (SO₂) concentration in Horsham, Pennsylvania is 0.177 ppb.

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

Horsham, Pennsylvania currently has an ozone (O₃) concentration of 53.248 ppm.

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

The current level of nitrogen dioxide (NO₂) in Horsham, Pennsylvania is 4.468 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-21T23:00:00.000Z	52 \| moderate	9.607 \| good	36.288 \| good	37.2 \| good	0.336 \| good	7.788 \| good	0.406 \| good
2026-07-22T00:00:00.000Z	44 \| good	8.32 \| good	32.149 \| good	36.552 \| good	0.37 \| good	7.883 \| good	0.388 \| good
2026-07-22T01:00:00.000Z	54 \| moderate	10.594 \| good	41.817 \| good	42.141 \| good	0.374 \| good	8.816 \| good	0.431 \| good
2026-07-22T02:00:00.000Z	44 \| good	8.465 \| good	44.932 \| good	39.623 \| good	0.37 \| good	7.198 \| good	0.349 \| good
2026-07-22T03:00:00.000Z	38 \| good	6.52 \| good	23.862 \| good	35.341 \| good	0.384 \| good	8.93 \| good	0.354 \| good
2026-07-22T04:00:00.000Z	38 \| good	7.47 \| good	32.302 \| good	35.197 \| good	0.371 \| good	10.159 \| good	0.354 \| good
2026-07-22T05:00:00.000Z	38 \| good	6.954 \| good	32.335 \| good	31.774 \| good	0.405 \| good	9.714 \| good	0.336 \| good
2026-07-22T06:00:00.000Z	38 \| good	6.509 \| good	21.838 \| good	32.918 \| good	0.507 \| good	5.553 \| good	0.319 \| good
2026-07-22T07:00:00.000Z	33 \| good	6.08 \| good	21.371 \| good	31.231 \| good	0.507 \| good	5.541 \| good	0.319 \| good
2026-07-22T08:00:00.000Z	28 \| good	5.38 \| good	21.194 \| good	29.651 \| good	0.368 \| good	5.085 \| good	0.26 \| good
2026-07-22T09:00:00.000Z	28 \| good	5.234 \| good	22.966 \| good	30.193 \| good	0.372 \| good	6.488 \| good	0.288 \| good
2026-07-22T10:00:00.000Z	27 \| good	4.46 \| good	19.506 \| good	28.69 \| good	0.513 \| good	10.474 \| good	0.288 \| good
2026-07-22T11:00:00.000Z	22 \| good	3.533 \| good	13.553 \| good	23.825 \| good	0.513 \| good	7.931 \| good	0.336 \| good
2026-07-22T12:00:00.000Z	27 \| good	4.872 \| good	16.001 \| good	28.061 \| good	0.564 \| good	9.978 \| good	0.42 \| good
2026-07-22T13:00:00.000Z	27 \| good	4.999 \| good	18.991 \| good	27.802 \| good	0.515 \| good	14.512 \| good	0.42 \| good
2026-07-22T14:00:00.000Z	33 \| good	6.116 \| good	27.319 \| good	26.999 \| good	0.526 \| good	10.315 \| good	0.386 \| good
2026-07-22T15:00:00.000Z	33 \| good	6.474 \| good	29.628 \| good	33.022 \| good	0.51 \| good	9.596 \| good	0.385 \| good
2026-07-22T16:00:00.000Z	44 \| good	7.997 \| good	34.035 \| good	34.946 \| good	0.441 \| good	8.753 \| good	0.385 \| good
2026-07-22T17:00:00.000Z	44 \| good	8.443 \| good	40.973 \| good	40.614 \| good	0.406 \| good	7.958 \| good	0.385 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	9.829 \| good	39.857 \| good	44.094 \| good	0.429 \| good	7.205 \| good	0.365 \| good
2026-07-22T19:00:00.000Z	54 \| moderate	10.747 \| good	46.679 \| good	45.673 \| good	0.428 \| good	7.233 \| good	0.365 \| good
2026-07-22T20:00:00.000Z	52 \| moderate	10.077 \| good	40.99 \| good	45.576 \| good	0.403 \| good	7.106 \| good	0.365 \| good
2026-07-22T21:00:00.000Z	54 \| moderate	10.985 \| good	38.047 \| good	45.429 \| good	0.399 \| good	9.249 \| good	0.365 \| good
2026-07-22T22:00:00.000Z	54 \| moderate	10.732 \| good	45.219 \| good	48.659 \| good	0.395 \| good	7.575 \| good	0.323 \| good
2026-07-22T23:00:00.000Z	49 \| good	9.395 \| good	45.851 \| good	43.977 \| good	0.491 \| good	4.769 \| good	0.352 \| good
2026-07-23T00:00:00.000Z	52 \| moderate	9.589 \| good	38.032 \| good	45.734 \| good	0.434 \| good	5.492 \| good	0.335 \| good
2026-07-23T01:00:00.000Z	52 \| moderate	9.629 \| good	39.687 \| good	41.273 \| good	0.374 \| good	5.047 \| good	0.335 \| good
2026-07-23T02:00:00.000Z	52 \| moderate	9.862 \| good	50.635 \| good	35.977 \| good	0.37 \| good	4.454 \| good	0.306 \| good
2026-07-23T03:00:00.000Z	19 \| good	1.648 \| good	6.544 \| good	20.449 \| good	0.611 \| good	7.332 \| good	0.202 \| good
2026-07-23T04:00:00.000Z	38 \| good	6.535 \| good	28.334 \| good	29.977 \| good	0.367 \| good	4.032 \| good	0.255 \| good
2026-07-23T05:00:00.000Z	30 \| good	5.492 \| good	24.247 \| good	31.649 \| good	0.368 \| good	3.933 \| good	0.255 \| good
2026-07-23T06:00:00.000Z	29 \| good	4.203 \| good	18.512 \| good	31.196 \| good	0.371 \| good	3.053 \| good	0.237 \| good
2026-07-23T07:00:00.000Z	29 \| good	3.816 \| good	14.901 \| good	30.861 \| good	0.409 \| good	2.836 \| good	0.237 \| good
2026-07-23T08:00:00.000Z	25 \| good	4 \| good	17.175 \| good	26.845 \| good	0.383 \| good	2.832 \| good	0.237 \| good
2026-07-23T09:00:00.000Z	27 \| good	4.61 \| good	20.224 \| good	27.552 \| good	0.49 \| good	3.599 \| good	0.237 \| good
2026-07-23T10:00:00.000Z	26 \| good	3.3 \| good	14.324 \| good	27.776 \| good	0.489 \| good	6.124 \| good	0.241 \| good
2026-07-23T11:00:00.000Z	23 \| good	2.714 \| good	10.001 \| good	25.295 \| good	0.45 \| good	10.637 \| good	0.293 \| good
2026-07-23T12:00:00.000Z	20 \| good	3.347 \| good	14.136 \| good	21.506 \| good	0.393 \| good	12.591 \| good	0.343 \| good
2026-07-23T13:00:00.000Z	24 \| good	3.311 \| good	13.933 \| good	26.371 \| good	0.528 \| good	11.329 \| good	0.308 \| good
2026-07-23T14:00:00.000Z	27 \| good	5.018 \| good	22.561 \| good	29.019 \| good	0.504 \| good	10.03 \| good	0.262 \| good
2026-07-23T15:00:00.000Z	28 \| good	4.168 \| good	18.11 \| good	30.085 \| good	0.409 \| good	8.034 \| good	0.258 \| good
2026-07-23T16:00:00.000Z	32 \| good	3.825 \| good	16.562 \| good	35.014 \| good	0.162 \| good	7.274 \| good	0.258 \| good
2026-07-23T17:00:00.000Z	36 \| good	4.673 \| good	18.255 \| good	39.454 \| good	0.168 \| good	5.911 \| good	0.212 \| good
2026-07-23T18:00:00.000Z	37 \| good	4.835 \| good	19.351 \| good	40.219 \| good	0.337 \| good	4.868 \| good	0.241 \| good
2026-07-23T19:00:00.000Z	43 \| good	4.609 \| good	20.881 \| good	45.769 \| good	0.352 \| good	4.027 \| good	0.244 \| good
2026-07-23T20:00:00.000Z	44 \| good	4.453 \| good	19.267 \| good	47.081 \| good	0.158 \| good	2.702 \| good	0.244 \| good
2026-07-23T21:00:00.000Z	48 \| good	4.638 \| good	19.743 \| good	52.017 \| good	0.158 \| good	3.929 \| good	0.244 \| good
2026-07-23T22:00:00.000Z	49 \| good	3.906 \| good	17.804 \| good	53.248 \| good	0.177 \| good	4.468 \| good	0.236 \| good
2026-07-23T23:00:00.000Z	56 \| moderate	11.599 \| good	51.712 \| good	51.343 \| good	0.528 \| good	2.047 \| good	0.142 \| good
2026-07-24T00:00:00.000Z	54 \| moderate	10.52 \| good	46.753 \| good	42.222 \| good	0.508 \| good	5.165 \| good	0.163 \| good
2026-07-24T01:00:00.000Z	54 \| moderate	10.511 \| good	46.507 \| good	35.512 \| good	0.466 \| good	7.529 \| good	0.178 \| good
2026-07-24T02:00:00.000Z	49 \| good	8.544 \| good	37.654 \| good	35.046 \| good	0.433 \| good	8.063 \| good	0.18 \| good
2026-07-24T03:00:00.000Z	49 \| good	9.058 \| good	40.355 \| good	30.263 \| good	0.421 \| good	9.618 \| good	0.187 \| good
2026-07-24T04:00:00.000Z	54 \| moderate	10.705 \| good	47.458 \| good	26.947 \| good	0.413 \| good	11.696 \| good	0.199 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	9.908 \| good	44.096 \| good	20.354 \| good	0.397 \| good	12.824 \| good	0.208 \| good
2026-07-24T06:00:00.000Z	52 \| moderate	10.176 \| good	45.207 \| good	18.007 \| good	0.385 \| good	13.573 \| good	0.21 \| good
2026-07-24T07:00:00.000Z	52 \| moderate	10.414 \| good	46.43 \| good	16.399 \| good	0.377 \| good	14.06 \| good	0.209 \| good
2026-07-24T08:00:00.000Z	49 \| good	9.039 \| good	39.984 \| good	16.492 \| good	0.377 \| good	14.643 \| good	0.21 \| good
2026-07-24T09:00:00.000Z	44 \| good	7.699 \| good	33.969 \| good	18.69 \| good	0.377 \| good	15.588 \| good	0.212 \| good
2026-07-24T10:00:00.000Z	38 \| good	6.834 \| good	30.425 \| good	18.214 \| good	0.376 \| good	16.723 \| good	0.222 \| good
2026-07-24T11:00:00.000Z	22 \| good	4.218 \| good	18.598 \| good	21.279 \| good	0.368 \| good	14.906 \| good	0.232 \| good
2026-07-24T12:00:00.000Z	24 \| good	3.379 \| good	14.948 \| good	25.679 \| good	0.467 \| good	11.924 \| good	0.225 \| good
2026-07-24T13:00:00.000Z	27 \| good	5.008 \| good	21.463 \| good	29.392 \| good	0.694 \| good	6.292 \| good	0.177 \| good
2026-07-24T14:00:00.000Z	33 \| good	5.892 \| good	25.974 \| good	32.812 \| good	0.731 \| good	3.268 \| good	0.156 \| good
2026-07-24T15:00:00.000Z	35 \| good	6.398 \| good	28.221 \| good	37.996 \| good	0.682 \| good	1.759 \| good	0.149 \| good
2026-07-24T16:00:00.000Z	42 \| good	6.407 \| good	28.354 \| good	44.615 \| good	0.625 \| good	1.241 \| good	0.149 \| good
2026-07-24T17:00:00.000Z	44 \| good	7.547 \| good	33.36 \| good	47.222 \| good	0.596 \| good	1.083 \| good	0.149 \| good
2026-07-24T18:00:00.000Z	49 \| good	9.208 \| good	41.218 \| good	48.255 \| good	0.581 \| good	1.069 \| good	0.15 \| good
2026-07-24T19:00:00.000Z	43 \| good	4.238 \| good	18.5 \| good	46.208 \| good	0.569 \| good	1.121 \| good	0.151 \| good
2026-07-24T20:00:00.000Z	42 \| good	4.255 \| good	18.8 \| good	44.807 \| good	0.552 \| good	1.173 \| good	0.152 \| good
2026-07-24T21:00:00.000Z	42 \| good	5.057 \| good	21.754 \| good	45.291 \| good	0.531 \| good	1.287 \| good	0.153 \| good
2026-07-24T22:00:00.000Z	42 \| good	4.397 \| good	19.346 \| good	45.149 \| good	0.507 \| good	1.575 \| good	0.154 \| good
2026-07-24T23:00:00.000Z	37 \| good	5.723 \| good	24.851 \| good	40.027 \| good	0.473 \| good	2.168 \| good	0.155 \| good
2026-07-25T00:00:00.000Z	44 \| good	7.707 \| good	33.845 \| good	34.77 \| good	0.435 \| good	3.334 \| good	0.158 \| good
2026-07-25T01:00:00.000Z	44 \| good	7.884 \| good	34.863 \| good	26.412 \| good	0.395 \| good	3.974 \| good	0.155 \| good
2026-07-25T02:00:00.000Z	52 \| moderate	9.639 \| good	42.836 \| good	22.91 \| good	0.364 \| good	4.763 \| good	0.152 \| good
2026-07-25T03:00:00.000Z	49 \| good	8.646 \| good	38.11 \| good	20.734 \| good	0.359 \| good	5.704 \| good	0.149 \| good
2026-07-25T04:00:00.000Z	38 \| good	7.028 \| good	30.954 \| good	18.341 \| good	0.367 \| good	7.768 \| good	0.155 \| good
2026-07-25T05:00:00.000Z	22 \| good	4.431 \| good	19.396 \| good	15.926 \| good	0.385 \| good	9.441 \| good	0.164 \| good
2026-07-25T06:00:00.000Z	16 \| good	1.58 \| good	6.459 \| good	17.255 \| good	0.411 \| good	11.865 \| good	0.174 \| good
2026-07-25T07:00:00.000Z	18 \| good	1.286 \| good	5.017 \| good	18.581 \| good	0.449 \| good	14.068 \| good	0.182 \| good
2026-07-25T08:00:00.000Z	17 \| good	0.723 \| good	2.354 \| good	18.24 \| good	0.495 \| good	13.753 \| good	0.181 \| good
2026-07-25T09:00:00.000Z	13 \| good	1.041 \| good	4.211 \| good	14.076 \| good	0.538 \| good	14.022 \| good	0.183 \| good
2026-07-25T10:00:00.000Z	15 \| good	0.932 \| good	3.622 \| good	16.099 \| good	0.568 \| good	14.479 \| good	0.187 \| good
2026-07-25T11:00:00.000Z	15 \| good	0.805 \| good	2.863 \| good	16.081 \| good	0.58 \| good	13.596 \| good	0.193 \| good
2026-07-25T12:00:00.000Z	15 \| good	0.884 \| good	3.457 \| good	16.116 \| good	0.671 \| good	9.461 \| good	0.178 \| good
2026-07-25T13:00:00.000Z	19 \| good	1.252 \| good	5.091 \| good	19.935 \| good	0.805 \| good	4.846 \| good	0.15 \| good
2026-07-25T14:00:00.000Z	25 \| good	2.032 \| good	8.129 \| good	26.997 \| good	0.706 \| good	2.594 \| good	0.141 \| good
2026-07-25T15:00:00.000Z	31 \| good	2.523 \| good	10.219 \| good	34.381 \| good	0.567 \| good	1.541 \| good	0.141 \| good
2026-07-25T16:00:00.000Z	39 \| good	3.582 \| good	15.971 \| good	42.276 \| good	0.431 \| good	1.035 \| good	0.144 \| good
2026-07-25T17:00:00.000Z	42 \| good	4.109 \| good	18.104 \| good	45.278 \| good	0.375 \| good	0.875 \| good	0.143 \| good
2026-07-25T18:00:00.000Z	45 \| good	5.518 \| good	23.723 \| good	48.657 \| good	0.344 \| good	0.812 \| good	0.143 \| good
2026-07-25T19:00:00.000Z	49 \| good	6.498 \| good	29.081 \| good	52.848 \| good	0.331 \| good	0.812 \| good	0.142 \| good
2026-07-25T20:00:00.000Z	51 \| moderate	5.805 \| good	25.115 \| good	55.275 \| fine	0.324 \| good	0.826 \| good	0.142 \| good
2026-07-25T21:00:00.000Z	50 \| good	5.857 \| good	25.578 \| good	54.237 \| good	0.323 \| good	0.902 \| good	0.141 \| good
2026-07-25T22:00:00.000Z	48 \| good	5.663 \| good	24.537 \| good	52.092 \| good	0.326 \| good	1.117 \| good	0.142 \| 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?

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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?