What is the PM10 level in San Jose, California at the moment?

The PM10 concentration in San Jose, California is 43.312 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in San Jose, California at the moment?

Currently, San Jose, California has a sulfur dioxide (SO2) concentration of 0.465 ppb.

What is the ozone (O3) level in San Jose, California at the moment?

The current ozone (O3) level in San Jose, California at the moment is 21.143 ppm.

What is the nitrogen dioxide (NO2) level in San Jose, California at the moment?

Nitrogen dioxide (NO2) level in San Jose, California at the moment is 24.649 ppb.

Live air quality index in San Jose, California today

Q: What is the PM2.5 level in San Jose, California at the moment?

PM2.5 levels in San Jose, California are currently 9.706 μg/m3.

Stay updated with real-time air quality in San Jose, California featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Moderate

San Jose, California

Last updated: ... (Local time)

Major air pollutants in San Jose, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.71 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

43.31 μg/m³

155

255

425

605+

Ozone (O₃)

21.14 ppb

201

201+

Sulfur Dioxide (SO₂)

0.47 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

24.65 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.62 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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San Jose, California

Scroll To Air Quality Map

Track live San Jose, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-15T09:00:00.000Z	27 \| good	5.368 \| good	23.5 \| good	23.897 \| good	0.536 \| good	7.214 \| good	0.278 \| good
2026-03-15T10:00:00.000Z	27 \| good	5.361 \| good	23.512 \| good	23.894 \| good	0.378 \| good	2.622 \| good	0.218 \| good
2026-03-15T11:00:00.000Z	49 \| good	9.112 \| good	33.801 \| good	23.847 \| good	0.345 \| good	2.64 \| good	0.177 \| good
2026-03-15T12:00:00.000Z	44 \| good	8.31 \| good	31.966 \| good	11.958 \| good	0.258 \| good	3.454 \| good	0.321 \| good
2026-03-15T13:00:00.000Z	27 \| good	4.583 \| good	19.751 \| good	8.847 \| good	0.5 \| good	8.65 \| good	0.301 \| good
2026-03-15T14:00:00.000Z	22 \| good	4.339 \| good	18.561 \| good	7.06 \| good	0.563 \| good	10.638 \| good	0.448 \| good
2026-03-15T15:00:00.000Z	16 \| good	3.243 \| good	14.467 \| good	6.081 \| good	0.455 \| good	11.04 \| good	0.474 \| good
2026-03-15T16:00:00.000Z	22 \| good	4.385 \| good	18.849 \| good	5.094 \| good	0.342 \| good	10.585 \| good	0.5 \| good
2026-03-15T17:00:00.000Z	27 \| good	5.137 \| good	22.955 \| good	7.104 \| good	0.434 \| good	10.896 \| good	0.548 \| good
2026-03-15T18:00:00.000Z	44 \| good	7.76 \| good	34.741 \| good	10.074 \| good	0.437 \| good	9.298 \| good	0.375 \| good
2026-03-15T19:00:00.000Z	52 \| moderate	9.85 \| good	43.773 \| good	14.062 \| good	0.469 \| good	10.636 \| good	0.326 \| good
2026-03-15T20:00:00.000Z	52 \| moderate	9.948 \| good	44.404 \| good	19.087 \| good	0.704 \| good	8.605 \| good	0.326 \| good
2026-03-15T21:00:00.000Z	49 \| good	8.924 \| good	39.919 \| good	27.069 \| good	0.471 \| good	5.204 \| good	0.226 \| good
2026-03-15T22:00:00.000Z	44 \| good	7.79 \| good	34.828 \| good	32.072 \| good	0.49 \| good	4.185 \| good	0.226 \| good
2026-03-15T23:00:00.000Z	33 \| good	5.835 \| good	26.295 \| good	33.105 \| good	0.473 \| good	3.747 \| good	0.227 \| good
2026-03-16T00:00:00.000Z	35 \| good	4.519 \| good	19.682 \| good	38.061 \| good	0.51 \| good	3.64 \| good	0.226 \| good
2026-03-16T01:00:00.000Z	41 \| good	5.348 \| good	24.396 \| good	43.966 \| good	0.479 \| good	4.054 \| good	0.226 \| good
2026-03-16T02:00:00.000Z	41 \| good	5.524 \| good	25.117 \| good	43.938 \| good	0.488 \| good	4.825 \| good	0.226 \| good
2026-03-16T03:00:00.000Z	41 \| good	5.586 \| good	25.406 \| good	43.901 \| good	0.494 \| good	6.245 \| good	0.253 \| good
2026-03-16T04:00:00.000Z	33 \| good	6.169 \| good	27.51 \| good	33.056 \| good	0.413 \| good	8.144 \| good	0.228 \| good
2026-03-16T05:00:00.000Z	33 \| good	6.464 \| good	28.298 \| good	32.028 \| good	0.481 \| good	9.929 \| good	0.304 \| good
2026-03-16T06:00:00.000Z	38 \| good	6.693 \| good	29.24 \| good	29.071 \| good	0.526 \| good	12.126 \| good	0.378 \| good
2026-03-16T07:00:00.000Z	44 \| good	7.589 \| good	34.005 \| good	20.182 \| good	0.625 \| good	17.722 \| good	0.525 \| good
2026-03-16T08:00:00.000Z	49 \| good	8.586 \| good	38.055 \| good	11.283 \| good	0.636 \| good	22.511 \| good	0.596 \| good
2026-03-16T09:00:00.000Z	49 \| good	8.649 \| good	37.784 \| good	8.314 \| good	0.618 \| good	20.251 \| good	0.595 \| good
2026-03-16T10:00:00.000Z	44 \| good	8.239 \| good	36.452 \| good	6.336 \| good	0.592 \| good	18.988 \| good	0.522 \| good
2026-03-16T11:00:00.000Z	49 \| good	8.698 \| good	38.322 \| good	4.353 \| good	0.61 \| good	20.314 \| good	0.646 \| good
2026-03-16T12:00:00.000Z	49 \| good	8.678 \| good	38.717 \| good	4.33 \| good	0.617 \| good	20.011 \| good	0.646 \| good
2026-03-16T13:00:00.000Z	49 \| good	8.575 \| good	37.572 \| good	4.319 \| good	0.568 \| good	17.992 \| good	0.499 \| good
2026-03-16T14:00:00.000Z	44 \| good	8.37 \| good	37.051 \| good	1.352 \| good	0.608 \| good	16.393 \| good	0.525 \| good
2026-03-16T15:00:00.000Z	44 \| good	8.277 \| good	36.831 \| good	3.321 \| good	0.692 \| good	18.036 \| good	0.552 \| good
2026-03-16T16:00:00.000Z	38 \| good	7.197 \| good	32.17 \| good	3.324 \| good	0.557 \| good	20.747 \| good	0.677 \| good
2026-03-16T17:00:00.000Z	38 \| good	7.457 \| good	33.557 \| good	6.297 \| good	0.691 \| good	22.84 \| good	0.873 \| good
2026-03-16T18:00:00.000Z	49 \| good	8.939 \| good	39.832 \| good	10.226 \| good	1.153 \| good	22.798 \| good	0.773 \| good
2026-03-16T19:00:00.000Z	60 \| moderate	13.62 \| fine	61.256 \| fine	18.181 \| good	1.4 \| good	18.097 \| good	0.499 \| good
2026-03-16T20:00:00.000Z	60 \| moderate	13.71 \| fine	62.116 \| fine	24.134 \| good	1.075 \| good	15.614 \| good	0.4 \| good
2026-03-16T21:00:00.000Z	56 \| moderate	12.186 \| fine	54.479 \| good	29.105 \| good	0.999 \| good	14.25 \| good	0.326 \| good
2026-03-16T22:00:00.000Z	52 \| moderate	9.935 \| good	44.104 \| good	34.071 \| good	0.729 \| good	8.273 \| good	0.226 \| good
2026-03-16T23:00:00.000Z	44 \| good	8.138 \| good	36.44 \| good	39.059 \| good	0.778 \| good	6.008 \| good	0.226 \| good
2026-03-17T00:00:00.000Z	44 \| good	8.413 \| good	37.702 \| good	44.973 \| good	0.736 \| good	5.457 \| good	0.226 \| good
2026-03-17T01:00:00.000Z	40 \| good	7.153 \| good	31.445 \| good	43.001 \| good	0.667 \| good	6.162 \| good	0.252 \| good
2026-03-17T02:00:00.000Z	41 \| good	5.569 \| good	24.96 \| good	43.966 \| good	0.654 \| good	6.683 \| good	0.252 \| good
2026-03-17T03:00:00.000Z	49 \| good	9.154 \| good	40.422 \| good	30.67 \| good	1.785 \| good	20.469 \| good	0.259 \| good
2026-03-17T04:00:00.000Z	44 \| good	6.381 \| good	28.386 \| good	47.827 \| good	0.624 \| good	11.399 \| good	0.352 \| good
2026-03-17T05:00:00.000Z	44 \| good	7.943 \| good	34.926 \| good	39.934 \| good	0.579 \| good	11.281 \| good	0.353 \| good
2026-03-17T06:00:00.000Z	44 \| good	8.196 \| good	36.236 \| good	35.97 \| good	0.519 \| good	14.531 \| good	0.404 \| good
2026-03-17T07:00:00.000Z	44 \| good	8.287 \| good	36.3 \| good	27.086 \| good	0.473 \| good	22.024 \| good	0.5 \| good
2026-03-17T08:00:00.000Z	52 \| moderate	9.706 \| good	43.312 \| good	21.143 \| good	0.465 \| good	24.649 \| good	0.622 \| good
2026-03-17T08:00:00.000Z	52 \| moderate	9.706 \| good	43.312 \| good	21.143 \| good	0.465 \| good	24.649 \| good	0.622 \| good
2026-03-17T09:00:00.000Z	49 \| good	8.716 \| good	38.358 \| good	6.784 \| good	1.842 \| good	25.535 \| good	0.346 \| good
2026-03-17T10:00:00.000Z	44 \| good	8.293 \| good	36.715 \| good	8.306 \| good	1.66 \| good	23.963 \| good	0.324 \| good
2026-03-17T11:00:00.000Z	38 \| good	6.996 \| good	30.825 \| good	6.659 \| good	1.478 \| good	22.39 \| good	0.303 \| good
2026-03-17T12:00:00.000Z	27 \| good	5.377 \| good	23.638 \| good	7.495 \| good	1.296 \| good	20.817 \| good	0.282 \| good
2026-03-17T13:00:00.000Z	33 \| good	6.087 \| good	26.635 \| good	5.278 \| good	1.284 \| good	19.908 \| good	0.273 \| good
2026-03-17T14:00:00.000Z	27 \| good	4.771 \| good	20.946 \| good	4.878 \| good	1.272 \| good	18.999 \| good	0.264 \| good
2026-03-17T15:00:00.000Z	17 \| good	3.287 \| good	13.52 \| good	4.52 \| good	1.26 \| good	18.09 \| good	0.255 \| good
2026-03-17T16:00:00.000Z	33 \| good	5.878 \| good	25.41 \| good	13.698 \| good	1.377 \| good	15.864 \| good	0.246 \| good
2026-03-17T17:00:00.000Z	60 \| moderate	14.399 \| fine	64.255 \| fine	23.876 \| good	1.494 \| good	13.638 \| good	0.237 \| good
2026-03-17T18:00:00.000Z	52 \| moderate	10.029 \| good	44.375 \| good	30.531 \| good	1.611 \| good	11.412 \| good	0.228 \| good
2026-03-17T19:00:00.000Z	34 \| good	4.467 \| good	19.061 \| good	37.021 \| good	1.558 \| good	9.484 \| good	0.208 \| good
2026-03-17T20:00:00.000Z	41 \| good	4.052 \| good	17.596 \| good	44.014 \| good	1.504 \| good	7.557 \| good	0.188 \| good
2026-03-17T21:00:00.000Z	44 \| good	2.847 \| good	11.531 \| good	47.099 \| good	1.451 \| good	5.629 \| good	0.167 \| good
2026-03-17T22:00:00.000Z	40 \| good	3.363 \| good	14.403 \| good	42.6 \| good	1.523 \| good	6.181 \| good	0.175 \| good
2026-03-17T23:00:00.000Z	40 \| good	3.626 \| good	15.841 \| good	43.23 \| good	1.596 \| good	6.732 \| good	0.183 \| good
2026-03-18T00:00:00.000Z	47 \| good	4.079 \| good	17.917 \| good	51.407 \| good	1.668 \| good	7.283 \| good	0.191 \| good
2026-03-18T01:00:00.000Z	47 \| good	7.455 \| good	32.939 \| good	50.893 \| good	1.734 \| good	12.429 \| good	0.222 \| good
2026-03-18T02:00:00.000Z	58 \| moderate	12.568 \| fine	56.904 \| fine	40.297 \| good	1.799 \| good	17.576 \| good	0.253 \| good
2026-03-18T03:00:00.000Z	67 \| moderate	18.253 \| fine	81.073 \| fine	27.248 \| good	1.865 \| good	22.722 \| good	0.283 \| good
2026-03-18T04:00:00.000Z	73 \| moderate	20.7 \| fine	90.707 \| fine	18.043 \| good	1.958 \| good	25.242 \| good	0.308 \| good
2026-03-18T05:00:00.000Z	73 \| moderate	20.544 \| fine	90.585 \| fine	10.563 \| good	2.05 \| good	27.762 \| good	0.333 \| good
2026-03-18T06:00:00.000Z	73 \| moderate	21.094 \| fine	92.01 \| fine	10.972 \| good	2.143 \| good	30.283 \| good	0.357 \| good
2026-03-18T07:00:00.000Z	66 \| moderate	16.805 \| fine	74.083 \| fine	11.806 \| good	2.08 \| good	29.46 \| good	0.369 \| good
2026-03-18T08:00:00.000Z	62 \| moderate	15.016 \| fine	67.29 \| fine	13.354 \| good	2.018 \| good	28.638 \| good	0.38 \| good
2026-03-18T09:00:00.000Z	60 \| moderate	14.453 \| fine	64.222 \| fine	10.741 \| good	1.956 \| good	27.816 \| good	0.391 \| good
2026-03-18T10:00:00.000Z	60 \| moderate	14.29 \| fine	63.698 \| fine	10.552 \| good	1.8 \| good	26.16 \| good	0.376 \| good
2026-03-18T11:00:00.000Z	58 \| moderate	12.914 \| fine	58.251 \| fine	6.338 \| good	1.644 \| good	24.504 \| good	0.362 \| good
2026-03-18T12:00:00.000Z	56 \| moderate	11.836 \| good	52.893 \| good	9.301 \| good	1.489 \| good	22.847 \| good	0.347 \| good
2026-03-18T13:00:00.000Z	52 \| moderate	9.945 \| good	44.051 \| good	7.528 \| good	1.452 \| good	21.707 \| good	0.342 \| good
2026-03-18T14:00:00.000Z	56 \| moderate	11.786 \| good	52.34 \| good	6.164 \| good	1.415 \| good	20.568 \| good	0.338 \| good
2026-03-18T15:00:00.000Z	54 \| moderate	11.375 \| good	50.599 \| good	6.31 \| good	1.379 \| good	19.428 \| good	0.333 \| good
2026-03-18T16:00:00.000Z	62 \| moderate	15.25 \| fine	67.438 \| fine	16.223 \| good	1.669 \| good	17.196 \| good	0.312 \| good
2026-03-18T17:00:00.000Z	67 \| moderate	18.438 \| fine	81.276 \| fine	27.614 \| good	1.96 \| good	14.965 \| good	0.29 \| good
2026-03-18T18:00:00.000Z	52 \| moderate	9.652 \| good	43.279 \| good	35.382 \| good	2.25 \| good	12.733 \| good	0.269 \| good
2026-03-18T19:00:00.000Z	49 \| good	8.612 \| good	38.031 \| good	42.347 \| good	2.212 \| good	10.476 \| good	0.242 \| good
2026-03-18T20:00:00.000Z	49 \| good	9.132 \| good	40.435 \| good	48.652 \| good	2.173 \| good	8.219 \| good	0.215 \| good
2026-03-18T21:00:00.000Z	48 \| good	8.329 \| good	36.685 \| good	51.849 \| good	2.135 \| good	5.962 \| good	0.188 \| good
2026-03-18T22:00:00.000Z	50 \| good	9.285 \| good	41.022 \| good	54.247 \| good	2.156 \| good	6.308 \| good	0.191 \| good
2026-03-18T23:00:00.000Z	61 \| moderate	10.866 \| good	48.09 \| good	58.261 \| fine	2.177 \| good	6.653 \| good	0.194 \| good
2026-03-19T00:00:00.000Z	77 \| moderate	11.325 \| good	50.074 \| good	63.492 \| fine	2.197 \| good	6.999 \| good	0.196 \| good
2026-03-19T01:00:00.000Z	62 \| moderate	14.703 \| fine	65.718 \| fine	57.649 \| fine	2.218 \| good	11.729 \| good	0.223 \| good
2026-03-19T02:00:00.000Z	66 \| moderate	16.61 \| fine	73.493 \| fine	47.523 \| good	2.239 \| good	16.459 \| good	0.25 \| good
2026-03-19T03:00:00.000Z	67 \| moderate	18.161 \| fine	80.516 \| fine	40.598 \| good	2.26 \| good	21.188 \| good	0.277 \| good
2026-03-19T04:00:00.000Z	64 \| moderate	15.567 \| fine	68.924 \| fine	33.149 \| good	2.383 \| good	24.124 \| good	0.307 \| good
2026-03-19T05:00:00.000Z	62 \| moderate	14.81 \| fine	65.412 \| fine	27 \| good	2.505 \| good	27.059 \| good	0.336 \| good
2026-03-19T06:00:00.000Z	82 \| moderate	25.949 \| fine	28.612 \| good	15.485 \| good	2.637 \| good	30.058 \| good	0.365 \| good
2026-03-19T07:00:00.000Z	58 \| moderate	12.939 \| fine	58.577 \| fine	22.158 \| good	2.523 \| good	29.693 \| good	0.374 \| good
2026-03-19T08:00:00.000Z	54 \| moderate	10.742 \| good	47.668 \| good	16.453 \| good	2.419 \| good	29.393 \| good	0.384 \| good

San Jose

Get reliable air quality data to drive your business

San Jose, California air quality map: Stay updated on AQI near you

0.49ppm

How accurate is California, USA air quality data?

Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for San Jose, California?

The air quality information for San Jose, California is updated every hour for accuracy.

What time in the last 24 hours was the air quality in San Jose, California at its worst?

In the past 24 hours, the air quality in San Jose, California was at its worst at 08:00:00 on 2026-03-16.

When did San Jose, California experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in San Jose, California was observed at 05:00:00 on 2026-03-16.

What is the AQI in San Jose, California right now?

As of now, the AQI in San Jose, California is 52, indicating Moderate conditions.

What is the most common type of pollution in San Jose, California?

San Jose, California air has the highest levels of PM2.5.

What should I do in case of poor air quality in San Jose, California?

Poor air quality in San Jose, California means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in San Jose, California at the moment?

PM_2.5 levels in San Jose, California are currently 9.706 μg/m³.

What is the PM₁₀ level in San Jose, California at the moment?

The PM₁₀ concentration in San Jose, California is 43.312 μg/m³ at the moment.

What is the carbon monoxide (CO) level in San Jose, California at the moment?

The current carbon monoxide (CO) concentration in San Jose, California is 0.622 ppm.

What is the sulfur dioxide (SO₂) level in San Jose, California at the moment?

Currently, San Jose, California has a sulfur dioxide (SO₂) concentration of 0.465 ppb.

What is the ozone (O₃) level in San Jose, California at the moment?

The current ozone (O₃) level in San Jose, California at the moment is 21.143 ppm.

What is the nitrogen dioxide (NO₂) level in San Jose, California at the moment?

Nitrogen dioxide (NO₂) level in San Jose, California at the moment is 24.649 ppb.

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