What is the current level of PM10 in Princeton, New Jersey?

Princeton, New Jersey currently has a PM10 concentration of 8.222 μg/m3.

What is the current level of sulfur dioxide (SO2) in Princeton, New Jersey?

The current sulfur dioxide (SO2) concentration in Princeton, New Jersey is 0.501 ppb.

What is the current level of ozone (O3) in Princeton, New Jersey?

Princeton, New Jersey currently has an ozone (O3) concentration of 17.749 ppm.

What is the current level of nitrogen dioxide (NO2) in Princeton, New Jersey?

The current level of nitrogen dioxide (NO2) in Princeton, New Jersey is 3.718 ppb.

Current air quality index in Princeton, New Jersey today

Q: What is the PM2.5 concentration in Princeton, New Jersey right now?

Princeton, New Jersey currently has a PM2.5 concentration of 1.909 μg/m3.

Stay updated with real-time air quality in Princeton, New Jersey 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

Princeton, New Jersey

Last updated: ... (Local time)

Common air pollutants in Princeton, New Jersey

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

1.91 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

8.22 μg/m³

155

255

425

605+

Ozone (O₃)

17.75 ppb

201

201+

Sulfur Dioxide (SO₂)

0.50 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.72 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Princeton, New Jersey

Scroll To Air Quality Map

Track live Princeton, New Jersey air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-18T21:00:00.000Z	33 \| good	4.484 \| good	19.12 \| good	35.951 \| good	0.506 \| good	7.071 \| good	0.313 \| good
2026-09-18T22:00:00.000Z	33 \| good	3.93 \| good	16.852 \| good	35.57 \| good	0.552 \| good	7.963 \| good	0.346 \| good
2026-09-18T23:00:00.000Z	32 \| good	4.984 \| good	22.002 \| good	34.674 \| good	0.262 \| good	7.592 \| good	0.329 \| good
2026-09-19T00:00:00.000Z	29 \| good	3.032 \| good	12.986 \| good	30.925 \| good	0.546 \| good	10.945 \| good	0.408 \| good
2026-09-19T01:00:00.000Z	27 \| good	3.108 \| good	13.934 \| good	28.613 \| good	0.458 \| good	12.984 \| good	0.41 \| good
2026-09-19T02:00:00.000Z	27 \| good	4.703 \| good	21.818 \| good	28.348 \| good	0.248 \| good	8.492 \| good	0.425 \| good
2026-09-19T03:00:00.000Z	22 \| good	3.751 \| good	16.075 \| good	23.351 \| good	0.281 \| good	4.539 \| good	0.199 \| good
2026-09-19T04:00:00.000Z	38 \| good	7.082 \| good	30.398 \| good	26.306 \| good	0.327 \| good	6.184 \| good	0.341 \| good
2026-09-19T05:00:00.000Z	49 \| good	8.958 \| good	39.299 \| good	25.546 \| good	0.339 \| good	6.468 \| good	0.334 \| good
2026-09-19T06:00:00.000Z	27 \| good	5.266 \| good	22.521 \| good	23.91 \| good	0.273 \| good	5.041 \| good	0.298 \| good
2026-09-19T07:00:00.000Z	27 \| good	5.466 \| good	22.185 \| good	24.449 \| good	0.249 \| good	3.653 \| good	0.27 \| good
2026-09-19T08:00:00.000Z	20 \| good	3.349 \| good	14.55 \| good	22.452 \| good	0.212 \| good	3.107 \| good	0.252 \| good
2026-09-19T09:00:00.000Z	21 \| good	2.347 \| good	10.229 \| good	22.589 \| good	0.344 \| good	4.334 \| good	0.237 \| good
2026-09-19T10:00:00.000Z	44 \| good	7.713 \| good	33.923 \| good	21.528 \| good	0.233 \| good	6.601 \| good	0.276 \| good
2026-09-19T11:00:00.000Z	38 \| good	6.573 \| good	28.724 \| good	19.828 \| good	0.274 \| good	6.977 \| good	0.262 \| good
2026-09-19T12:00:00.000Z	44 \| good	7.663 \| good	33.585 \| good	21.756 \| good	0.336 \| good	8.685 \| good	0.329 \| good
2026-09-19T13:00:00.000Z	20 \| good	3.199 \| good	12.449 \| good	21.879 \| good	0.377 \| good	9.711 \| good	0.339 \| good
2026-09-19T14:00:00.000Z	22 \| good	3.664 \| good	16.09 \| good	22.615 \| good	0.277 \| good	8.896 \| good	0.312 \| good
2026-09-19T15:00:00.000Z	21 \| good	2.669 \| good	10.58 \| good	23.212 \| good	0.223 \| good	6.491 \| good	0.3 \| good
2026-09-19T16:00:00.000Z	25 \| good	2.144 \| good	9.212 \| good	26.837 \| good	0.194 \| good	4.931 \| good	0.258 \| good
2026-09-19T17:00:00.000Z	26 \| good	2.516 \| good	11.708 \| good	27.738 \| good	0.259 \| good	3.793 \| good	0.288 \| good
2026-09-19T18:00:00.000Z	28 \| good	2.267 \| good	10.698 \| good	30.092 \| good	0.224 \| good	2.651 \| good	0.288 \| good
2026-09-19T19:00:00.000Z	31 \| good	5.284 \| good	22.214 \| good	33.945 \| good	0.445 \| good	2.912 \| good	0.26 \| good
2026-09-19T20:00:00.000Z	31 \| good	4.171 \| good	17.3 \| good	33.911 \| good	0.491 \| good	3.432 \| good	0.275 \| good
2026-09-19T21:00:00.000Z	31 \| good	3.924 \| good	15.869 \| good	32.82 \| good	0.355 \| good	2.633 \| good	0.275 \| good
2026-09-19T22:00:00.000Z	28 \| good	3.429 \| good	15.955 \| good	30.295 \| good	0.392 \| good	2.617 \| good	0.276 \| good
2026-09-19T23:00:00.000Z	28 \| good	4.183 \| good	18.793 \| good	29.613 \| good	0.347 \| good	3.307 \| good	0.274 \| good
2026-09-20T00:00:00.000Z	26 \| good	3.916 \| good	16.994 \| good	28.269 \| good	0.588 \| good	3.399 \| good	0.275 \| good
2026-09-20T01:00:00.000Z	26 \| good	3.721 \| good	16.081 \| good	28.014 \| good	0.284 \| good	3.19 \| good	0.274 \| good
2026-09-20T02:00:00.000Z	26 \| good	3.688 \| good	16.038 \| good	28.053 \| good	0.327 \| good	3.06 \| good	0.274 \| good
2026-09-20T03:00:00.000Z	19 \| good	1.286 \| good	5.228 \| good	19.925 \| good	0.349 \| good	3.61 \| good	0.185 \| good
2026-09-20T04:00:00.000Z	23 \| good	3.727 \| good	16.096 \| good	24.842 \| good	0.236 \| good	2.281 \| good	0.275 \| good
2026-09-20T05:00:00.000Z	49 \| good	9.337 \| good	42.937 \| good	22.714 \| good	0.374 \| good	2.247 \| good	0.274 \| good
2026-09-20T06:00:00.000Z	49 \| good	9.145 \| good	39.805 \| good	21.552 \| good	0.388 \| good	2.35 \| good	0.274 \| good
2026-09-20T07:00:00.000Z	49 \| good	9.062 \| good	40.98 \| good	20.305 \| good	0.248 \| good	2.366 \| good	0.26 \| good
2026-09-20T08:00:00.000Z	69 \| moderate	18.878 \| fine	80.388 \| fine	19.958 \| good	0.282 \| good	3.117 \| good	0.261 \| good
2026-09-20T09:00:00.000Z	64 \| moderate	15.939 \| fine	70.444 \| fine	20.503 \| good	0.206 \| good	2.645 \| good	0.259 \| good
2026-09-20T10:00:00.000Z	22 \| good	4.193 \| good	17.003 \| good	20.573 \| good	0.247 \| good	2.614 \| good	0.259 \| good
2026-09-20T11:00:00.000Z	22 \| good	3.523 \| good	15.273 \| good	19.684 \| good	0.373 \| good	3.918 \| good	0.26 \| good
2026-09-20T12:00:00.000Z	18 \| good	3.115 \| good	10.477 \| good	19.076 \| good	0.272 \| good	3.584 \| good	0.283 \| good
2026-09-20T13:00:00.000Z	18 \| good	3.115 \| good	15.067 \| good	18.561 \| good	0.355 \| good	4.735 \| good	0.3 \| good
2026-09-20T14:00:00.000Z	19 \| good	1.37 \| good	5.511 \| good	20.291 \| good	0.361 \| good	3.875 \| good	0.286 \| good
2026-09-20T15:00:00.000Z	19 \| good	2.643 \| good	11.821 \| good	20.764 \| good	0.265 \| good	3.925 \| good	0.302 \| good
2026-09-20T16:00:00.000Z	19 \| good	2.109 \| good	9.321 \| good	19.945 \| good	0.315 \| good	3.987 \| good	0.325 \| good
2026-09-20T17:00:00.000Z	19 \| good	2.496 \| good	10.159 \| good	19.653 \| good	0.306 \| good	5.713 \| good	0.344 \| good
2026-09-20T18:00:00.000Z	17 \| good	2.282 \| good	10.34 \| good	18.221 \| good	0.517 \| good	5.473 \| good	0.298 \| good
2026-09-20T19:00:00.000Z	17 \| good	1.947 \| good	8.372 \| good	17.868 \| good	0.5 \| good	3.709 \| good	0.31 \| good
2026-09-20T20:00:00.000Z	17 \| good	1.909 \| good	8.222 \| good	17.749 \| good	0.501 \| good	3.718 \| good	0.311 \| good
2026-09-20T21:00:00.000Z	27 \| good	5.346 \| good	23.256 \| good	27.379 \| good	0.414 \| good	3.142 \| good	0.187 \| good
2026-09-20T22:00:00.000Z	33 \| good	5.83 \| good	25.547 \| good	28.326 \| good	0.407 \| good	4.78 \| good	0.198 \| good
2026-09-20T23:00:00.000Z	33 \| good	6.486 \| good	28.396 \| good	28.575 \| good	0.393 \| good	8.088 \| good	0.217 \| good
2026-09-21T00:00:00.000Z	27 \| good	4.806 \| good	21.177 \| good	22.127 \| good	0.393 \| good	10.946 \| good	0.229 \| good
2026-09-21T01:00:00.000Z	38 \| good	7.342 \| good	32.452 \| good	20.454 \| good	0.398 \| good	12.074 \| good	0.235 \| good
2026-09-21T02:00:00.000Z	54 \| moderate	10.866 \| good	48.285 \| good	20.331 \| good	0.405 \| good	12.369 \| good	0.238 \| good
2026-09-21T03:00:00.000Z	58 \| moderate	13.202 \| fine	59.962 \| fine	18.877 \| good	0.413 \| good	11.934 \| good	0.24 \| good
2026-09-21T04:00:00.000Z	52 \| moderate	9.612 \| good	42.599 \| good	20.441 \| good	0.406 \| good	9.485 \| good	0.232 \| good
2026-09-21T05:00:00.000Z	38 \| good	6.849 \| good	30.464 \| good	17.831 \| good	0.39 \| good	6.795 \| good	0.219 \| good
2026-09-21T06:00:00.000Z	33 \| good	6.468 \| good	28.822 \| good	14.952 \| good	0.386 \| good	5.497 \| good	0.21 \| good
2026-09-21T07:00:00.000Z	44 \| good	8.001 \| good	35.285 \| good	15.229 \| good	0.381 \| good	4.795 \| good	0.202 \| good
2026-09-21T08:00:00.000Z	49 \| good	8.915 \| good	39.564 \| good	18.825 \| good	0.378 \| good	4.342 \| good	0.197 \| good
2026-09-21T09:00:00.000Z	38 \| good	7.057 \| good	31.404 \| good	20.884 \| good	0.375 \| good	3.821 \| good	0.192 \| good
2026-09-21T10:00:00.000Z	33 \| good	5.524 \| good	23.979 \| good	21.405 \| good	0.362 \| good	3.478 \| good	0.19 \| good
2026-09-21T11:00:00.000Z	27 \| good	5.2 \| good	22.512 \| good	20.491 \| good	0.355 \| good	3.551 \| good	0.192 \| good
2026-09-21T12:00:00.000Z	27 \| good	5.15 \| good	22.481 \| good	18.794 \| good	0.363 \| good	3.534 \| good	0.199 \| good
2026-09-21T13:00:00.000Z	33 \| good	6.398 \| good	28.218 \| good	13.539 \| good	0.415 \| good	3.15 \| good	0.204 \| good
2026-09-21T14:00:00.000Z	27 \| good	5.451 \| good	23.59 \| good	13.391 \| good	0.471 \| good	2.831 \| good	0.206 \| good
2026-09-21T15:00:00.000Z	15 \| good	1.704 \| good	7.018 \| good	15.549 \| good	0.519 \| good	2.435 \| good	0.206 \| good
2026-09-21T16:00:00.000Z	19 \| good	1.307 \| good	5.056 \| good	20.078 \| good	0.546 \| good	2.018 \| good	0.202 \| good
2026-09-21T17:00:00.000Z	22 \| good	2.432 \| good	9.949 \| good	23.591 \| good	0.56 \| good	1.754 \| good	0.199 \| good
2026-09-21T18:00:00.000Z	26 \| good	4.467 \| good	19.284 \| good	27.935 \| good	0.553 \| good	1.623 \| good	0.196 \| good
2026-09-21T19:00:00.000Z	27 \| good	4.53 \| good	19.792 \| good	28.546 \| good	0.54 \| good	1.7 \| good	0.194 \| good
2026-09-21T20:00:00.000Z	28 \| good	4.933 \| good	21.425 \| good	30.226 \| good	0.54 \| good	1.927 \| good	0.192 \| good
2026-09-21T21:00:00.000Z	33 \| good	5.911 \| good	25.911 \| good	28.828 \| good	0.541 \| good	2.304 \| good	0.192 \| good
2026-09-21T22:00:00.000Z	33 \| good	6.425 \| good	28.111 \| good	28.524 \| good	0.538 \| good	3.861 \| good	0.202 \| good
2026-09-21T23:00:00.000Z	33 \| good	6.08 \| good	26.777 \| good	28.802 \| good	0.565 \| good	6.426 \| good	0.218 \| good
2026-09-22T00:00:00.000Z	33 \| good	6.277 \| good	27.466 \| good	28.325 \| good	0.598 \| good	7.957 \| good	0.223 \| good
2026-09-22T01:00:00.000Z	44 \| good	7.818 \| good	34.343 \| good	28.748 \| good	0.622 \| good	8.801 \| good	0.224 \| good
2026-09-22T02:00:00.000Z	49 \| good	9.269 \| good	41.266 \| good	29.537 \| good	0.638 \| good	8.791 \| good	0.22 \| good
2026-09-22T03:00:00.000Z	49 \| good	8.8 \| good	38.78 \| good	28.433 \| good	0.635 \| good	8.37 \| good	0.214 \| good
2026-09-22T04:00:00.000Z	33 \| good	6.399 \| good	28.3 \| good	29.024 \| good	0.616 \| good	7.62 \| good	0.209 \| good
2026-09-22T05:00:00.000Z	33 \| good	6.155 \| good	27.111 \| good	26.062 \| good	0.588 \| good	6.607 \| good	0.203 \| good
2026-09-22T06:00:00.000Z	33 \| good	5.594 \| good	24.145 \| good	24.56 \| good	0.553 \| good	5.82 \| good	0.196 \| good
2026-09-22T07:00:00.000Z	44 \| good	7.96 \| good	34.797 \| good	21.935 \| good	0.525 \| good	5.265 \| good	0.191 \| good
2026-09-22T08:00:00.000Z	52 \| moderate	10.122 \| good	45.28 \| good	20.034 \| good	0.508 \| good	4.875 \| good	0.187 \| good
2026-09-22T09:00:00.000Z	38 \| good	6.604 \| good	29.274 \| good	20.848 \| good	0.5 \| good	4.622 \| good	0.184 \| good
2026-09-22T10:00:00.000Z	27 \| good	5.109 \| good	22.052 \| good	20.853 \| good	0.502 \| good	4.63 \| good	0.183 \| good
2026-09-22T11:00:00.000Z	27 \| good	4.612 \| good	19.989 \| good	17.336 \| good	0.52 \| good	5.174 \| good	0.185 \| good
2026-09-22T12:00:00.000Z	22 \| good	3.699 \| good	16.128 \| good	13.875 \| good	0.54 \| good	6.188 \| good	0.193 \| good
2026-09-22T13:00:00.000Z	27 \| good	4.605 \| good	19.87 \| good	12.206 \| good	0.558 \| good	7.093 \| good	0.202 \| good
2026-09-22T14:00:00.000Z	27 \| good	5.1 \| good	22.135 \| good	12.754 \| good	0.563 \| good	7.629 \| good	0.209 \| good
2026-09-22T15:00:00.000Z	13 \| good	2.045 \| good	8.206 \| good	13.784 \| good	0.563 \| good	7.543 \| good	0.211 \| good
2026-09-22T16:00:00.000Z	13 \| good	1.604 \| good	6.553 \| good	13.541 \| good	0.559 \| good	6.294 \| good	0.203 \| good
2026-09-22T17:00:00.000Z	11 \| good	1.952 \| good	8.074 \| good	11.244 \| good	0.539 \| good	4.992 \| good	0.191 \| good
2026-09-22T18:00:00.000Z	16 \| good	2.54 \| good	10.391 \| good	10.568 \| good	0.498 \| good	4.245 \| good	0.184 \| good
2026-09-22T19:00:00.000Z	11 \| good	2.065 \| good	8.295 \| good	8.697 \| good	0.458 \| good	3.73 \| good	0.179 \| good
2026-09-22T20:00:00.000Z	14 \| good	1.331 \| good	5.259 \| good	15.076 \| good	0.45 \| good	3.65 \| good	0.178 \| good

Princeton

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Princeton, New Jersey

0.32ppm

How accurate is New Jersey, USA air quality data?

The air quality data for New Jersey, 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 Princeton, New Jersey get updated?

Air quality updates for Princeton, New Jersey are available every hour.

What time in the past 24 hours saw the poorest air quality in Princeton, New Jersey?

Princeton, New Jersey experienced its worst air quality at 08:00:00, 2026-09-20.

When was air quality in Princeton, New Jersey the best over the past 24 hours?

The best air quality in Princeton, New Jersey was observed at 07:00:00 on 2026-09-20.

What is the air quality in Princeton, New Jersey right now?

The air quality in Princeton, New Jersey right now is Good, with an AQI of 17.

What pollutant is most frequently found in Princeton, New Jersey?

In Princeton, New Jersey, O3 is the most frequently found pollutant.

What can I do if the air quality in Princeton, New Jersey is poor?

When air quality in Princeton, New Jersey is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Princeton, New Jersey right now?

Princeton, New Jersey currently has a PM_2.5 concentration of 1.909 μg/m³.

What is the current level of PM₁₀ in Princeton, New Jersey?

Princeton, New Jersey currently has a PM₁₀ concentration of 8.222 μg/m³.

What is the current level of carbon monoxide (CO) in Princeton, New Jersey?

The current carbon monoxide (CO) level in Princeton, New Jersey is 0.311 ppm.

What is the current level of sulfur dioxide (SO₂) in Princeton, New Jersey?

The current sulfur dioxide (SO₂) concentration in Princeton, New Jersey is 0.501 ppb.

What is the current level of ozone (O₃) in Princeton, New Jersey?

Princeton, New Jersey currently has an ozone (O₃) concentration of 17.749 ppm.

What is the current level of nitrogen dioxide (NO₂) in Princeton, New Jersey?

The current level of nitrogen dioxide (NO₂) in Princeton, New Jersey is 3.718 ppb.

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