What is the PM10 level in Palo Alto, California at the moment?

The PM10 concentration in Palo Alto, California is 23.228 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Palo Alto, California at the moment?

Currently, Palo Alto, California has a sulfur dioxide (SO2) concentration of 0.457 ppb.

What is the ozone (O3) level in Palo Alto, California at the moment?

The current ozone (O3) level in Palo Alto, California at the moment is 16.513 ppm.

What is the nitrogen dioxide (NO2) level in Palo Alto, California at the moment?

Nitrogen dioxide (NO2) level in Palo Alto, California at the moment is 13.351 ppb.

Live air quality index in Palo Alto, California today

Q: What is the PM2.5 level in Palo Alto, California at the moment?

PM2.5 levels in Palo Alto, California are currently 5.389 μg/m3.

Stay updated with real-time air quality in Palo Alto, 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)

Good

Palo Alto, California

Last updated: ... (Local time)

Major air pollutants in Palo Alto, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.39 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

23.23 μg/m³

155

255

425

605+

Ozone (O₃)

16.51 ppb

201

201+

Sulfur Dioxide (SO₂)

0.46 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

13.35 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.50 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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Palo Alto, California

Scroll To Air Quality Map

Track live Palo Alto, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-14T10:00:00.000Z	27 \| good	5.201 \| good	21.344 \| good	16.481 \| good	0.416 \| good	7.724 \| good	0.223 \| good
2026-03-14T11:00:00.000Z	16 \| good	2.725 \| good	7.818 \| good	16.481 \| good	0.356 \| good	7.51 \| good	0.209 \| good
2026-03-14T12:00:00.000Z	22 \| good	3.651 \| good	22.205 \| good	22.942 \| good	0.169 \| good	8.917 \| good	0.248 \| good
2026-03-14T13:00:00.000Z	11 \| good	2.39 \| good	9.974 \| good	6.281 \| good	0.601 \| good	7.653 \| good	0.374 \| good
2026-03-14T14:00:00.000Z	16 \| good	3.207 \| good	13.688 \| good	6.085 \| good	0.342 \| good	9.506 \| good	0.477 \| good
2026-03-14T15:00:00.000Z	22 \| good	4.236 \| good	18.055 \| good	7.483 \| good	0.438 \| good	10.264 \| good	0.482 \| good
2026-03-14T16:00:00.000Z	33 \| good	6.402 \| good	28.39 \| good	9.962 \| good	0.363 \| good	9.166 \| good	0.482 \| good
2026-03-14T17:00:00.000Z	44 \| good	7.704 \| good	33.709 \| good	11.049 \| good	0.438 \| good	6.295 \| good	0.411 \| good
2026-03-14T18:00:00.000Z	49 \| good	8.622 \| good	38.808 \| good	12.316 \| good	0.568 \| good	4.628 \| good	0.379 \| good
2026-03-14T19:00:00.000Z	49 \| good	8.523 \| good	37.326 \| good	20.141 \| good	0.398 \| good	4.365 \| good	0.286 \| good
2026-03-14T20:00:00.000Z	44 \| good	7.944 \| good	34.281 \| good	20.696 \| good	0.371 \| good	4.327 \| good	0.362 \| good
2026-03-14T21:00:00.000Z	44 \| good	7.696 \| good	34.055 \| good	23.684 \| good	0.997 \| good	3.995 \| good	0.281 \| good
2026-03-14T22:00:00.000Z	38 \| good	6.928 \| good	29.991 \| good	24.413 \| good	0.974 \| good	3.975 \| good	0.282 \| good
2026-03-14T23:00:00.000Z	28 \| good	5.399 \| good	23.959 \| good	30.132 \| good	0.514 \| good	4.257 \| good	0.284 \| good
2026-03-15T00:00:00.000Z	28 \| good	3.959 \| good	17.404 \| good	30.36 \| good	0.474 \| good	6.433 \| good	0.287 \| good
2026-03-15T01:00:00.000Z	27 \| good	3.524 \| good	14.464 \| good	28.748 \| good	0.424 \| good	4.013 \| good	0.286 \| good
2026-03-15T02:00:00.000Z	26 \| good	3.233 \| good	14.055 \| good	28.492 \| good	0.452 \| good	2.625 \| good	0.285 \| good
2026-03-15T03:00:00.000Z	23 \| good	3.171 \| good	13.024 \| good	25.056 \| good	0.476 \| good	3.347 \| good	0.295 \| good
2026-03-15T04:00:00.000Z	23 \| good	3.125 \| good	12.888 \| good	24.531 \| good	0.433 \| good	2.735 \| good	0.304 \| good
2026-03-15T05:00:00.000Z	21 \| good	3.441 \| good	13.664 \| good	23.369 \| good	0.388 \| good	2.706 \| good	0.293 \| good
2026-03-15T06:00:00.000Z	20 \| good	3.237 \| good	13.406 \| good	21.597 \| good	0.377 \| good	3.725 \| good	0.295 \| good
2026-03-15T07:00:00.000Z	19 \| good	3.408 \| good	14.747 \| good	20.322 \| good	0.317 \| good	3.73 \| good	0.301 \| good
2026-03-15T08:00:00.000Z	22 \| good	4.013 \| good	15.051 \| good	18.5 \| good	0.354 \| good	6.22 \| good	0.376 \| good
2026-03-15T09:00:00.000Z	22 \| good	4.367 \| good	18.028 \| good	18.5 \| good	0.329 \| good	6.143 \| good	0.376 \| good
2026-03-15T10:00:00.000Z	22 \| good	4.143 \| good	16.54 \| good	18.5 \| good	0.374 \| good	3.584 \| good	0.222 \| good
2026-03-15T11:00:00.000Z	27 \| good	4.874 \| good	18.564 \| good	18.5 \| good	0.342 \| good	3.138 \| good	0.176 \| good
2026-03-15T12:00:00.000Z	22 \| good	3.616 \| good	11.773 \| good	11.307 \| good	0.226 \| good	3.689 \| good	0.353 \| good
2026-03-15T13:00:00.000Z	22 \| good	3.971 \| good	17.339 \| good	5.192 \| good	0.38 \| good	5.744 \| good	0.388 \| good
2026-03-15T14:00:00.000Z	16 \| good	2.871 \| good	11.456 \| good	4.348 \| good	0.42 \| good	7.858 \| good	0.389 \| good
2026-03-15T15:00:00.000Z	16 \| good	2.514 \| good	12.374 \| good	7.434 \| good	0.343 \| good	7.779 \| good	0.477 \| good
2026-03-15T16:00:00.000Z	16 \| good	3.361 \| good	14.255 \| good	6.489 \| good	0.344 \| good	7.653 \| good	0.495 \| good
2026-03-15T17:00:00.000Z	11 \| good	2.426 \| good	10.102 \| good	9.965 \| good	0.44 \| good	6.149 \| good	0.412 \| good
2026-03-15T18:00:00.000Z	44 \| good	7.874 \| good	34.228 \| good	11.748 \| good	0.446 \| good	5.281 \| good	0.402 \| good
2026-03-15T19:00:00.000Z	44 \| good	8.027 \| good	35.369 \| good	14.581 \| good	0.48 \| good	5.91 \| good	0.382 \| good
2026-03-15T20:00:00.000Z	38 \| good	6.964 \| good	31.129 \| good	15.743 \| good	0.732 \| good	4.377 \| good	0.382 \| good
2026-03-15T21:00:00.000Z	33 \| good	6.02 \| good	26.249 \| good	20.91 \| good	0.49 \| good	3.307 \| good	0.287 \| good
2026-03-15T22:00:00.000Z	26 \| good	3.891 \| good	17.659 \| good	28.176 \| good	0.511 \| good	2.732 \| good	0.289 \| good
2026-03-15T23:00:00.000Z	32 \| good	2.266 \| good	9.85 \| good	34.867 \| good	0.48 \| good	2.782 \| good	0.298 \| good
2026-03-16T00:00:00.000Z	33 \| good	2.211 \| good	8.95 \| good	36.149 \| good	0.511 \| good	3.225 \| good	0.295 \| good
2026-03-16T01:00:00.000Z	36 \| good	2.788 \| good	13.111 \| good	39.003 \| good	0.48 \| good	5.351 \| good	0.289 \| good
2026-03-16T02:00:00.000Z	36 \| good	2.816 \| good	12.468 \| good	38.919 \| good	0.488 \| good	5.266 \| good	0.291 \| good
2026-03-16T03:00:00.000Z	32 \| good	2.763 \| good	11.397 \| good	34.924 \| good	0.492 \| good	7.288 \| good	0.382 \| good
2026-03-16T04:00:00.000Z	31 \| good	4.228 \| good	18.929 \| good	34.027 \| good	0.409 \| good	16.218 \| good	0.55 \| good
2026-03-16T05:00:00.000Z	33 \| good	5.545 \| good	24.574 \| good	22.764 \| good	0.466 \| good	14.062 \| good	0.476 \| good
2026-03-16T06:00:00.000Z	33 \| good	6.076 \| good	25.591 \| good	22.487 \| good	0.453 \| good	9.716 \| good	0.399 \| good
2026-03-16T07:00:00.000Z	33 \| good	6.388 \| good	27.081 \| good	21.013 \| good	0.496 \| good	9.966 \| good	0.421 \| good
2026-03-16T08:00:00.000Z	27 \| good	5.389 \| good	23.228 \| good	16.513 \| good	0.457 \| good	13.351 \| good	0.498 \| good
2026-03-16T09:00:00.000Z	27 \| good	4.653 \| good	20.39 \| good	11.726 \| good	0.45 \| good	9.556 \| good	0.41 \| good
2026-03-16T09:00:00.000Z	27 \| good	5.389 \| good	23.228 \| good	16.513 \| good	0.457 \| good	13.351 \| good	0.498 \| good
2026-03-16T10:00:00.000Z	52 \| moderate	9.852 \| good	43.547 \| good	12.426 \| good	1.491 \| good	22.624 \| good	0.357 \| good
2026-03-16T11:00:00.000Z	44 \| good	8.372 \| good	36.445 \| good	11.676 \| good	1.371 \| good	21.827 \| good	0.342 \| good
2026-03-16T12:00:00.000Z	52 \| moderate	9.688 \| good	43.021 \| good	13.909 \| good	1.25 \| good	21.031 \| good	0.327 \| good
2026-03-16T13:00:00.000Z	49 \| good	9.449 \| good	42.025 \| good	9.414 \| good	1.264 \| good	20.28 \| good	0.328 \| good
2026-03-16T14:00:00.000Z	54 \| moderate	11.105 \| good	49.504 \| good	7.905 \| good	1.277 \| good	19.529 \| good	0.329 \| good
2026-03-16T15:00:00.000Z	56 \| moderate	12.144 \| fine	54.816 \| good	10.714 \| good	1.29 \| good	18.778 \| good	0.33 \| good
2026-03-16T16:00:00.000Z	62 \| moderate	14.745 \| fine	65.607 \| fine	16.906 \| good	1.584 \| good	16.921 \| good	0.301 \| good
2026-03-16T17:00:00.000Z	58 \| moderate	12.547 \| fine	56.294 \| fine	25.118 \| good	1.878 \| good	15.063 \| good	0.272 \| good
2026-03-16T18:00:00.000Z	44 \| good	7.943 \| good	34.985 \| good	29.585 \| good	2.172 \| good	13.206 \| good	0.243 \| good
2026-03-16T19:00:00.000Z	33 \| good	3.619 \| good	15.883 \| good	36.3 \| good	1.969 \| good	11.575 \| good	0.226 \| good
2026-03-16T20:00:00.000Z	40 \| good	1.369 \| good	5.586 \| good	43.07 \| good	1.765 \| good	9.945 \| good	0.21 \| good
2026-03-16T21:00:00.000Z	44 \| good	3.022 \| good	12.731 \| good	47.921 \| good	1.562 \| good	8.314 \| good	0.193 \| good
2026-03-16T22:00:00.000Z	45 \| good	4.616 \| good	20.527 \| good	48.542 \| good	1.547 \| good	8.608 \| good	0.193 \| good
2026-03-16T23:00:00.000Z	45 \| good	4.695 \| good	20.545 \| good	48.773 \| good	1.533 \| good	8.903 \| good	0.193 \| good
2026-03-17T00:00:00.000Z	43 \| good	6.086 \| good	26.349 \| good	46.278 \| good	1.518 \| good	9.197 \| good	0.192 \| good
2026-03-17T01:00:00.000Z	56 \| moderate	12.016 \| good	53.706 \| good	38.311 \| good	1.675 \| good	15.206 \| good	0.237 \| good
2026-03-17T02:00:00.000Z	56 \| moderate	12.438 \| fine	55.947 \| fine	34.242 \| good	1.831 \| good	21.214 \| good	0.281 \| good
2026-03-17T03:00:00.000Z	60 \| moderate	14.444 \| fine	64.493 \| fine	25.012 \| good	1.987 \| good	27.223 \| good	0.325 \| good
2026-03-17T04:00:00.000Z	64 \| moderate	16.218 \| fine	71.93 \| fine	22.663 \| good	2.173 \| good	28.161 \| good	0.355 \| good
2026-03-17T05:00:00.000Z	64 \| moderate	16.318 \| fine	72.906 \| fine	20.927 \| good	2.359 \| good	29.099 \| good	0.385 \| good
2026-03-17T06:00:00.000Z	62 \| moderate	15.276 \| fine	67.456 \| fine	17.068 \| good	2.545 \| good	30.037 \| good	0.415 \| good
2026-03-17T07:00:00.000Z	62 \| moderate	15.489 \| fine	68.635 \| fine	15.436 \| good	2.354 \| good	28.751 \| good	0.418 \| good
2026-03-17T08:00:00.000Z	64 \| moderate	15.743 \| fine	70.167 \| fine	13.099 \| good	2.163 \| good	27.464 \| good	0.422 \| good
2026-03-17T09:00:00.000Z	66 \| moderate	17.318 \| fine	76.582 \| fine	11.629 \| good	1.972 \| good	26.177 \| good	0.425 \| good
2026-03-17T10:00:00.000Z	64 \| moderate	15.635 \| fine	69.036 \| fine	11.263 \| good	1.756 \| good	24.618 \| good	0.41 \| good
2026-03-17T11:00:00.000Z	56 \| moderate	11.883 \| good	53.166 \| good	8.998 \| good	1.54 \| good	23.06 \| good	0.394 \| good
2026-03-17T12:00:00.000Z	58 \| moderate	13.124 \| fine	58.501 \| fine	8.557 \| good	1.323 \| good	21.501 \| good	0.379 \| good
2026-03-17T13:00:00.000Z	58 \| moderate	12.778 \| fine	56.979 \| fine	4.991 \| good	1.307 \| good	20.645 \| good	0.373 \| good
2026-03-17T14:00:00.000Z	67 \| moderate	17.69 \| fine	78.537 \| fine	3.879 \| good	1.292 \| good	19.789 \| good	0.367 \| good
2026-03-17T15:00:00.000Z	66 \| moderate	17.171 \| fine	75.901 \| fine	5.199 \| good	1.276 \| good	18.933 \| good	0.361 \| good
2026-03-17T16:00:00.000Z	71 \| moderate	19.835 \| fine	87.559 \| fine	14.923 \| good	1.642 \| good	18.372 \| good	0.344 \| good
2026-03-17T17:00:00.000Z	69 \| moderate	19.113 \| fine	84.447 \| fine	24.257 \| good	2.008 \| good	17.812 \| good	0.327 \| good
2026-03-17T18:00:00.000Z	58 \| moderate	13.177 \| fine	58.743 \| fine	29.031 \| good	2.374 \| good	17.251 \| good	0.311 \| good
2026-03-17T19:00:00.000Z	52 \| moderate	9.551 \| good	42.495 \| good	35.852 \| good	2.257 \| good	14.793 \| good	0.279 \| good
2026-03-17T20:00:00.000Z	41 \| good	4.796 \| good	20.616 \| good	43.821 \| good	2.14 \| good	12.335 \| good	0.248 \| good
2026-03-17T21:00:00.000Z	47 \| good	4.915 \| good	21.597 \| good	51.138 \| good	2.023 \| good	9.877 \| good	0.217 \| good
2026-03-17T22:00:00.000Z	51 \| moderate	5.032 \| good	21.853 \| good	54.797 \| good	1.948 \| good	10.197 \| good	0.221 \| good
2026-03-17T23:00:00.000Z	58 \| moderate	6.087 \| good	26.42 \| good	56.78 \| fine	1.873 \| good	10.517 \| good	0.225 \| good
2026-03-18T00:00:00.000Z	50 \| good	7.716 \| good	34.229 \| good	54.323 \| good	1.798 \| good	10.838 \| good	0.229 \| good
2026-03-18T01:00:00.000Z	54 \| moderate	11.193 \| good	49.72 \| good	39.653 \| good	1.813 \| good	16.238 \| good	0.257 \| good
2026-03-18T02:00:00.000Z	44 \| good	8.201 \| good	36.174 \| good	37.026 \| good	1.828 \| good	21.638 \| good	0.285 \| good
2026-03-18T03:00:00.000Z	49 \| good	8.603 \| good	37.55 \| good	27.615 \| good	1.842 \| good	27.039 \| good	0.313 \| good
2026-03-18T04:00:00.000Z	54 \| moderate	10.52 \| good	46.635 \| good	24.22 \| good	1.976 \| good	28.028 \| good	0.337 \| good
2026-03-18T05:00:00.000Z	56 \| moderate	12.101 \| fine	53.819 \| good	21.266 \| good	2.11 \| good	29.018 \| good	0.36 \| good
2026-03-18T06:00:00.000Z	81 \| moderate	24.925 \| fine	27.538 \| good	11.721 \| good	2.208 \| good	29.571 \| good	0.377 \| good
2026-03-18T07:00:00.000Z	58 \| moderate	13.144 \| fine	58.85 \| fine	15.242 \| good	2.25 \| good	29.415 \| good	0.391 \| good
2026-03-18T08:00:00.000Z	54 \| moderate	10.531 \| good	46.838 \| good	13.102 \| good	2.256 \| good	28.823 \| good	0.398 \| good
2026-03-18T09:00:00.000Z	56 \| moderate	12.166 \| fine	54.879 \| good	10.996 \| good	2.263 \| good	28.23 \| good	0.405 \| good

Palo Alto

Get reliable air quality data to drive your business

Palo Alto, California air quality map: Stay updated on AQI near you

0.48ppm

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 Palo Alto, California?

The air quality information for Palo Alto, California is updated every hour for accuracy.

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

In the past 24 hours, the air quality in Palo Alto, California was at its worst at 07:00:00 on 2026-03-15.

When did Palo Alto, California experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Palo Alto, California was observed at 05:00:00 on 2026-03-15.

What is the AQI in Palo Alto, California right now?

As of now, the AQI in Palo Alto, California is 27, indicating Good conditions.

What is the most common type of pollution in Palo Alto, California?

Palo Alto, California air has the highest levels of PM2.5.

What should I do in case of poor air quality in Palo Alto, California?

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

What is the PM_2.5 level in Palo Alto, California at the moment?

PM_2.5 levels in Palo Alto, California are currently 5.389 μg/m³.

What is the PM₁₀ level in Palo Alto, California at the moment?

The PM₁₀ concentration in Palo Alto, California is 23.228 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Palo Alto, California at the moment?

The current carbon monoxide (CO) concentration in Palo Alto, California is 0.498 ppm.

What is the sulfur dioxide (SO₂) level in Palo Alto, California at the moment?

Currently, Palo Alto, California has a sulfur dioxide (SO₂) concentration of 0.457 ppb.

What is the ozone (O₃) level in Palo Alto, California at the moment?

The current ozone (O₃) level in Palo Alto, California at the moment is 16.513 ppm.

What is the nitrogen dioxide (NO₂) level in Palo Alto, California at the moment?

Nitrogen dioxide (NO₂) level in Palo Alto, California at the moment is 13.351 ppb.

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