What is the sulfur dioxide (SO2) level in Menlo Park, California at the moment?

Currently, Menlo Park, California has a sulfur dioxide (SO2) concentration of 0.454 ppb.

What is the ozone (O3) level in Menlo Park, California at the moment?

The current ozone (O3) level in Menlo Park, California at the moment is 29.698 ppm.

What is the nitrogen dioxide (NO2) level in Menlo Park, California at the moment?

Nitrogen dioxide (NO2) level in Menlo Park, California at the moment is 3.281 ppb.

Live air quality index in Menlo Park, California today

Q: What is the PM2.5 level in Menlo Park, California at the moment?

PM2.5 levels in Menlo Park, California are currently 3.576 μg/m3.

Q: What is the PM10 level in Menlo Park, California at the moment?

The PM10 concentration in Menlo Park, California is 16.217 μg/m3 at the moment.

Stay updated with real-time air quality in Menlo Park, 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

Menlo Park, California

Last updated: ... (Local time)

Major air pollutants in Menlo Park, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.75 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

16.88 μg/m³

155

255

425

605+

Ozone (O₃)

29.47 ppb

201

201+

Sulfur Dioxide (SO₂)

0.44 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.58 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Menlo Park, California

Get Live Pollen Counts

Menlo Park, California

Scroll To Air Quality Map

Track live Menlo Park, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-11T03:00:00.000Z	44 \| good	8.232 \| good	36.587 \| good	30.051 \| good	0.527 \| good	6.991 \| good	0.206 \| good
2026-06-11T04:00:00.000Z	54 \| moderate	11.066 \| good	48.749 \| good	25.153 \| good	0.485 \| good	8.583 \| good	0.202 \| good
2026-06-11T05:00:00.000Z	56 \| moderate	12.383 \| fine	56.258 \| fine	25.098 \| good	0.409 \| good	15.612 \| good	0.298 \| good
2026-06-11T06:00:00.000Z	56 \| moderate	12.35 \| fine	56.173 \| fine	18.4 \| good	0.626 \| good	15.807 \| good	0.303 \| good
2026-06-11T07:00:00.000Z	56 \| moderate	12.211 \| fine	54.46 \| good	16.462 \| good	0.523 \| good	15.28 \| good	0.306 \| good
2026-06-11T08:00:00.000Z	62 \| moderate	14.844 \| fine	65.734 \| fine	14.391 \| good	0.673 \| good	23.658 \| good	0.401 \| good
2026-06-11T09:00:00.000Z	62 \| moderate	14.792 \| fine	65.888 \| fine	11.42 \| good	0.498 \| good	24.694 \| good	0.401 \| good
2026-06-11T10:00:00.000Z	64 \| moderate	16.131 \| fine	70.554 \| fine	7.835 \| good	0.746 \| good	23.272 \| good	0.4 \| good
2026-06-11T11:00:00.000Z	60 \| moderate	13.569 \| fine	60.045 \| fine	7.692 \| good	0.434 \| good	10.328 \| good	0.305 \| good
2026-06-11T12:00:00.000Z	54 \| moderate	11.424 \| good	50.386 \| good	11.329 \| good	0.411 \| good	10.334 \| good	0.305 \| good
2026-06-11T13:00:00.000Z	56 \| moderate	11.58 \| good	50.958 \| good	11.233 \| good	0.551 \| good	10.423 \| good	0.309 \| good
2026-06-11T14:00:00.000Z	44 \| good	7.915 \| good	34.724 \| good	8.35 \| good	0.403 \| good	12.792 \| good	0.403 \| good
2026-06-11T15:00:00.000Z	44 \| good	8.39 \| good	36.53 \| good	14.712 \| good	0.528 \| good	10.351 \| good	0.417 \| good
2026-06-11T16:00:00.000Z	49 \| good	9.467 \| good	42.116 \| good	14.925 \| good	0.481 \| good	11.574 \| good	0.412 \| good
2026-06-11T17:00:00.000Z	58 \| moderate	12.726 \| fine	56.498 \| fine	18.886 \| good	0.706 \| good	16.746 \| good	0.505 \| good
2026-06-11T18:00:00.000Z	49 \| good	8.607 \| good	37.371 \| good	41.571 \| good	0.814 \| good	5.62 \| good	0.213 \| good
2026-06-11T19:00:00.000Z	39 \| good	6.047 \| good	26.777 \| good	41.943 \| good	0.637 \| good	4.377 \| good	0.205 \| good
2026-06-11T20:00:00.000Z	49 \| good	4.726 \| good	20.905 \| good	52.507 \| good	0.563 \| good	3.106 \| good	0.112 \| good
2026-06-11T21:00:00.000Z	49 \| good	3.407 \| good	15.409 \| good	52.866 \| good	0.614 \| good	2.807 \| good	0.109 \| good
2026-06-11T22:00:00.000Z	51 \| moderate	3.478 \| good	15.927 \| good	55.108 \| fine	0.571 \| good	3.144 \| good	0.204 \| good
2026-06-11T23:00:00.000Z	58 \| moderate	6.741 \| good	30.067 \| good	57.19 \| fine	0.509 \| good	6.643 \| good	0.204 \| good
2026-06-12T00:00:00.000Z	54 \| moderate	11.169 \| good	49.933 \| good	51.788 \| good	0.444 \| good	9.205 \| good	0.299 \| good
2026-06-12T01:00:00.000Z	58 \| moderate	13.247 \| fine	59.364 \| fine	37.127 \| good	0.705 \| good	6.489 \| good	0.204 \| good
2026-06-12T02:00:00.000Z	62 \| moderate	15.313 \| fine	68.544 \| fine	34.158 \| good	0.605 \| good	6.402 \| good	0.205 \| good
2026-06-12T03:00:00.000Z	62 \| moderate	14.555 \| fine	65.021 \| fine	32.691 \| good	0.457 \| good	4.6 \| good	0.205 \| good
2026-06-12T04:00:00.000Z	64 \| moderate	15.848 \| fine	70.329 \| fine	32.415 \| good	0.491 \| good	5.834 \| good	0.205 \| good
2026-06-12T05:00:00.000Z	67 \| moderate	17.528 \| fine	77.475 \| fine	28.322 \| good	0.652 \| good	7.192 \| good	0.21 \| good
2026-06-12T06:00:00.000Z	62 \| moderate	15.354 \| fine	67.793 \| fine	28.17 \| good	0.615 \| good	4.494 \| good	0.212 \| good
2026-06-12T07:00:00.000Z	62 \| moderate	15.148 \| fine	66.767 \| fine	26.997 \| good	0.611 \| good	4.344 \| good	0.204 \| good
2026-06-12T08:00:00.000Z	49 \| good	9.284 \| good	41.319 \| good	25.89 \| good	0.423 \| good	4.217 \| good	0.204 \| good
2026-06-12T09:00:00.000Z	38 \| good	7.109 \| good	31.31 \| good	25.947 \| good	0.532 \| good	3.513 \| good	0.204 \| good
2026-06-12T10:00:00.000Z	27 \| good	5.128 \| good	22.183 \| good	24.828 \| good	0.339 \| good	3.612 \| good	0.203 \| good
2026-06-12T11:00:00.000Z	27 \| good	4.572 \| good	20.843 \| good	22.86 \| good	0.526 \| good	3.888 \| good	0.203 \| good
2026-06-12T12:00:00.000Z	22 \| good	4.23 \| good	19.113 \| good	22.86 \| good	0.576 \| good	3.896 \| good	0.204 \| good
2026-06-12T13:00:00.000Z	22 \| good	4.287 \| good	19.17 \| good	22.744 \| good	0.601 \| good	3.991 \| good	0.21 \| good
2026-06-12T14:00:00.000Z	22 \| good	3.49 \| good	15.67 \| good	23.501 \| good	0.483 \| good	4.855 \| good	0.205 \| good
2026-06-12T15:00:00.000Z	21 \| good	2.856 \| good	12.585 \| good	23.453 \| good	0.581 \| good	6.748 \| good	0.299 \| good
2026-06-12T16:00:00.000Z	21 \| good	2.652 \| good	11.493 \| good	22.56 \| good	0.507 \| good	7.118 \| good	0.305 \| good
2026-06-12T17:00:00.000Z	20 \| good	2.995 \| good	13.102 \| good	22.498 \| good	0.583 \| good	6.184 \| good	0.304 \| good
2026-06-12T18:00:00.000Z	22 \| good	4.177 \| good	19.632 \| good	24.465 \| good	0.477 \| good	6.858 \| good	0.304 \| good
2026-06-12T19:00:00.000Z	24 \| good	4.155 \| good	18.762 \| good	25.918 \| good	0.479 \| good	6.847 \| good	0.304 \| good
2026-06-12T20:00:00.000Z	33 \| good	6.381 \| good	28.988 \| good	31.974 \| good	0.886 \| good	7.733 \| good	0.301 \| good
2026-06-12T21:00:00.000Z	44 \| good	7.662 \| good	34.204 \| good	36.964 \| good	0.843 \| good	5.574 \| good	0.303 \| good
2026-06-12T22:00:00.000Z	38 \| good	7.102 \| good	31.629 \| good	37.042 \| good	0.407 \| good	3.976 \| good	0.209 \| good
2026-06-12T23:00:00.000Z	31 \| good	4.876 \| good	20.822 \| good	32.775 \| good	0.448 \| good	4.294 \| good	0.205 \| good
2026-06-13T00:00:00.000Z	28 \| good	3.086 \| good	13.02 \| good	29.879 \| good	0.468 \| good	3.824 \| good	0.205 \| good
2026-06-13T01:00:00.000Z	28 \| good	3.576 \| good	16.217 \| good	29.698 \| good	0.454 \| good	3.281 \| good	0.205 \| good
2026-06-13T02:00:00.000Z	27 \| good	3.751 \| good	16.882 \| good	29.469 \| good	0.439 \| good	5.578 \| good	0.208 \| good
2026-06-13T02:00:00.000Z	52 \| moderate	9.524 \| good	42.697 \| good	30.212 \| good	0.594 \| good	2.672 \| good	0.112 \| good
2026-06-13T03:00:00.000Z	52 \| moderate	10.379 \| good	45.788 \| good	25.815 \| good	0.615 \| good	3.49 \| good	0.113 \| good
2026-06-13T04:00:00.000Z	49 \| good	9.003 \| good	40.654 \| good	21.945 \| good	0.637 \| good	4.185 \| good	0.114 \| good
2026-06-13T05:00:00.000Z	49 \| good	9.249 \| good	40.883 \| good	15.937 \| good	0.667 \| good	4.209 \| good	0.114 \| good
2026-06-13T06:00:00.000Z	56 \| moderate	12.463 \| fine	56.569 \| fine	15.016 \| good	0.677 \| good	4.228 \| good	0.114 \| good
2026-06-13T07:00:00.000Z	56 \| moderate	11.756 \| good	51.837 \| good	15.585 \| good	0.685 \| good	4.191 \| good	0.115 \| good
2026-06-13T08:00:00.000Z	58 \| moderate	12.629 \| fine	56.672 \| fine	15.047 \| good	0.682 \| good	4.072 \| good	0.115 \| good
2026-06-13T09:00:00.000Z	56 \| moderate	12.361 \| fine	56.504 \| fine	12.514 \| good	0.672 \| good	3.738 \| good	0.113 \| good
2026-06-13T10:00:00.000Z	54 \| moderate	10.787 \| good	47.809 \| good	13.554 \| good	0.664 \| good	3.606 \| good	0.112 \| good
2026-06-13T11:00:00.000Z	49 \| good	9.341 \| good	41.82 \| good	11.779 \| good	0.653 \| good	3.368 \| good	0.111 \| good
2026-06-13T12:00:00.000Z	52 \| moderate	10.103 \| good	44.909 \| good	13.1 \| good	0.645 \| good	3.37 \| good	0.111 \| good
2026-06-13T13:00:00.000Z	52 \| moderate	10.481 \| good	46.838 \| good	12.53 \| good	0.632 \| good	3.375 \| good	0.111 \| good
2026-06-13T14:00:00.000Z	54 \| moderate	11.212 \| good	49.972 \| good	18.684 \| good	0.631 \| good	3.136 \| good	0.111 \| good
2026-06-13T15:00:00.000Z	60 \| moderate	14.357 \| fine	64.666 \| fine	20.42 \| good	0.64 \| good	3.004 \| good	0.11 \| good
2026-06-13T16:00:00.000Z	64 \| moderate	16.048 \| fine	70.825 \| fine	22.59 \| good	0.646 \| good	2.755 \| good	0.109 \| good
2026-06-13T17:00:00.000Z	58 \| moderate	13.339 \| fine	60.396 \| fine	32.405 \| good	0.657 \| good	2.544 \| good	0.109 \| good
2026-06-13T18:00:00.000Z	56 \| moderate	12.033 \| good	54.417 \| good	36.298 \| good	0.67 \| good	2.165 \| good	0.107 \| good
2026-06-13T19:00:00.000Z	52 \| moderate	10.06 \| good	44.623 \| good	38.976 \| good	0.68 \| good	1.786 \| good	0.105 \| good
2026-06-13T20:00:00.000Z	52 \| moderate	9.505 \| good	42.552 \| good	38.588 \| good	0.672 \| good	1.407 \| good	0.103 \| good
2026-06-13T21:00:00.000Z	49 \| good	8.732 \| good	38.655 \| good	39.812 \| good	0.665 \| good	1.206 \| good	0.1 \| good
2026-06-13T22:00:00.000Z	49 \| good	8.649 \| good	37.849 \| good	39.06 \| good	0.66 \| good	1.164 \| good	0.098 \| good
2026-06-13T23:00:00.000Z	49 \| good	9.494 \| good	42.7 \| good	35.253 \| good	0.643 \| good	1.211 \| good	0.096 \| good
2026-06-14T00:00:00.000Z	49 \| good	8.63 \| good	37.898 \| good	35.142 \| good	0.62 \| good	1.365 \| good	0.095 \| good
2026-06-14T01:00:00.000Z	49 \| good	9.406 \| good	41.823 \| good	34.968 \| good	0.602 \| good	1.615 \| good	0.093 \| good
2026-06-14T02:00:00.000Z	44 \| good	8.272 \| good	36.08 \| good	31.695 \| good	0.582 \| good	2.11 \| good	0.093 \| good
2026-06-14T03:00:00.000Z	49 \| good	9.017 \| good	40.802 \| good	27.193 \| good	0.572 \| good	2.776 \| good	0.093 \| good
2026-06-14T04:00:00.000Z	49 \| good	8.855 \| good	38.938 \| good	22.145 \| good	0.578 \| good	3.348 \| good	0.094 \| good
2026-06-14T05:00:00.000Z	52 \| moderate	9.526 \| good	42.765 \| good	17.259 \| good	0.595 \| good	3.648 \| good	0.094 \| good
2026-06-14T06:00:00.000Z	54 \| moderate	10.76 \| good	47.793 \| good	12.49 \| good	0.607 \| good	3.98 \| good	0.095 \| good
2026-06-14T07:00:00.000Z	54 \| moderate	11.084 \| good	48.832 \| good	11.798 \| good	0.612 \| good	3.948 \| good	0.095 \| good
2026-06-14T08:00:00.000Z	54 \| moderate	11.474 \| good	50.746 \| good	10.745 \| good	0.607 \| good	3.658 \| good	0.095 \| good
2026-06-14T09:00:00.000Z	54 \| moderate	10.878 \| good	47.799 \| good	8.982 \| good	0.595 \| good	3.54 \| good	0.094 \| good
2026-06-14T10:00:00.000Z	54 \| moderate	11.377 \| good	50.663 \| good	9.045 \| good	0.586 \| good	3.352 \| good	0.093 \| good
2026-06-14T11:00:00.000Z	52 \| moderate	9.752 \| good	42.853 \| good	10.243 \| good	0.568 \| good	3.411 \| good	0.093 \| good
2026-06-14T12:00:00.000Z	44 \| good	7.612 \| good	33.845 \| good	14.339 \| good	0.559 \| good	3.472 \| good	0.093 \| good
2026-06-14T13:00:00.000Z	44 \| good	8.142 \| good	35.838 \| good	13.33 \| good	0.558 \| good	3.694 \| good	0.094 \| good
2026-06-14T14:00:00.000Z	44 \| good	8.165 \| good	35.953 \| good	20.404 \| good	0.56 \| good	3.332 \| good	0.094 \| good
2026-06-14T15:00:00.000Z	54 \| moderate	11.012 \| good	48.819 \| good	21.469 \| good	0.562 \| good	2.858 \| good	0.093 \| good
2026-06-14T16:00:00.000Z	56 \| moderate	11.966 \| good	53.627 \| good	23.196 \| good	0.563 \| good	2.478 \| good	0.094 \| good
2026-06-14T17:00:00.000Z	52 \| moderate	9.786 \| good	43.605 \| good	29.862 \| good	0.565 \| good	2.086 \| good	0.094 \| good
2026-06-14T18:00:00.000Z	49 \| good	8.964 \| good	40.498 \| good	33.127 \| good	0.561 \| good	1.714 \| good	0.094 \| good
2026-06-14T19:00:00.000Z	44 \| good	7.75 \| good	33.787 \| good	35.91 \| good	0.551 \| good	1.407 \| good	0.093 \| good
2026-06-14T20:00:00.000Z	33 \| good	6.266 \| good	27.693 \| good	35.044 \| good	0.546 \| good	1.172 \| good	0.092 \| good
2026-06-14T21:00:00.000Z	38 \| good	6.675 \| good	29.707 \| good	33.217 \| good	0.523 \| good	1.028 \| good	0.092 \| good
2026-06-14T22:00:00.000Z	28 \| good	5.25 \| good	22.937 \| good	29.972 \| good	0.506 \| good	0.958 \| good	0.091 \| good
2026-06-14T23:00:00.000Z	33 \| good	6.359 \| good	27.893 \| good	25.133 \| good	0.495 \| good	0.982 \| good	0.091 \| good
2026-06-15T00:00:00.000Z	60 \| moderate	13.632 \| fine	20.673 \| good	41.22 \| good	0.487 \| good	1.124 \| good	0.091 \| good
2026-06-15T01:00:00.000Z	38 \| good	7.067 \| good	30.943 \| good	28.198 \| good	0.495 \| good	1.595 \| good	0.092 \| good

Menlo Park

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Menlo Park, California air quality map: Stay updated on AQI near you

0.22ppm

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 Menlo Park, California?

The air quality information for Menlo Park, California is updated every hour for accuracy.

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

In the past 24 hours, the air quality in Menlo Park, California was at its worst at 05:00:00 on 2026-06-12.

When did Menlo Park, California experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Menlo Park, California was observed at 05:00:00 on 2026-06-12.

What is the AQI in Menlo Park, California right now?

As of now, the AQI in Menlo Park, California is 28, indicating Good conditions.

What is the most common type of pollution in Menlo Park, California?

Menlo Park, California air has the highest levels of O3.

What should I do in case of poor air quality in Menlo Park, California?

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

What is the PM_2.5 level in Menlo Park, California at the moment?

PM_2.5 levels in Menlo Park, California are currently 3.576 μg/m³.

What is the PM₁₀ level in Menlo Park, California at the moment?

The PM₁₀ concentration in Menlo Park, California is 16.217 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Menlo Park, California at the moment?

The current carbon monoxide (CO) concentration in Menlo Park, California is 0.205 ppm.

What is the sulfur dioxide (SO₂) level in Menlo Park, California at the moment?

Currently, Menlo Park, California has a sulfur dioxide (SO₂) concentration of 0.454 ppb.

What is the ozone (O₃) level in Menlo Park, California at the moment?

The current ozone (O₃) level in Menlo Park, California at the moment is 29.698 ppm.

What is the nitrogen dioxide (NO₂) level in Menlo Park, California at the moment?

Nitrogen dioxide (NO₂) level in Menlo Park, California at the moment is 3.281 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-11T03:00:00.000Z	44 \| good	8.232 \| good	36.587 \| good	30.051 \| good	0.527 \| good	6.991 \| good	0.206 \| good
2026-06-11T04:00:00.000Z	54 \| moderate	11.066 \| good	48.749 \| good	25.153 \| good	0.485 \| good	8.583 \| good	0.202 \| good
2026-06-11T05:00:00.000Z	56 \| moderate	12.383 \| fine	56.258 \| fine	25.098 \| good	0.409 \| good	15.612 \| good	0.298 \| good
2026-06-11T06:00:00.000Z	56 \| moderate	12.35 \| fine	56.173 \| fine	18.4 \| good	0.626 \| good	15.807 \| good	0.303 \| good
2026-06-11T07:00:00.000Z	56 \| moderate	12.211 \| fine	54.46 \| good	16.462 \| good	0.523 \| good	15.28 \| good	0.306 \| good
2026-06-11T08:00:00.000Z	62 \| moderate	14.844 \| fine	65.734 \| fine	14.391 \| good	0.673 \| good	23.658 \| good	0.401 \| good
2026-06-11T09:00:00.000Z	62 \| moderate	14.792 \| fine	65.888 \| fine	11.42 \| good	0.498 \| good	24.694 \| good	0.401 \| good
2026-06-11T10:00:00.000Z	64 \| moderate	16.131 \| fine	70.554 \| fine	7.835 \| good	0.746 \| good	23.272 \| good	0.4 \| good
2026-06-11T11:00:00.000Z	60 \| moderate	13.569 \| fine	60.045 \| fine	7.692 \| good	0.434 \| good	10.328 \| good	0.305 \| good
2026-06-11T12:00:00.000Z	54 \| moderate	11.424 \| good	50.386 \| good	11.329 \| good	0.411 \| good	10.334 \| good	0.305 \| good
2026-06-11T13:00:00.000Z	56 \| moderate	11.58 \| good	50.958 \| good	11.233 \| good	0.551 \| good	10.423 \| good	0.309 \| good
2026-06-11T14:00:00.000Z	44 \| good	7.915 \| good	34.724 \| good	8.35 \| good	0.403 \| good	12.792 \| good	0.403 \| good
2026-06-11T15:00:00.000Z	44 \| good	8.39 \| good	36.53 \| good	14.712 \| good	0.528 \| good	10.351 \| good	0.417 \| good
2026-06-11T16:00:00.000Z	49 \| good	9.467 \| good	42.116 \| good	14.925 \| good	0.481 \| good	11.574 \| good	0.412 \| good
2026-06-11T17:00:00.000Z	58 \| moderate	12.726 \| fine	56.498 \| fine	18.886 \| good	0.706 \| good	16.746 \| good	0.505 \| good
2026-06-11T18:00:00.000Z	49 \| good	8.607 \| good	37.371 \| good	41.571 \| good	0.814 \| good	5.62 \| good	0.213 \| good
2026-06-11T19:00:00.000Z	39 \| good	6.047 \| good	26.777 \| good	41.943 \| good	0.637 \| good	4.377 \| good	0.205 \| good
2026-06-11T20:00:00.000Z	49 \| good	4.726 \| good	20.905 \| good	52.507 \| good	0.563 \| good	3.106 \| good	0.112 \| good
2026-06-11T21:00:00.000Z	49 \| good	3.407 \| good	15.409 \| good	52.866 \| good	0.614 \| good	2.807 \| good	0.109 \| good
2026-06-11T22:00:00.000Z	51 \| moderate	3.478 \| good	15.927 \| good	55.108 \| fine	0.571 \| good	3.144 \| good	0.204 \| good
2026-06-11T23:00:00.000Z	58 \| moderate	6.741 \| good	30.067 \| good	57.19 \| fine	0.509 \| good	6.643 \| good	0.204 \| good
2026-06-12T00:00:00.000Z	54 \| moderate	11.169 \| good	49.933 \| good	51.788 \| good	0.444 \| good	9.205 \| good	0.299 \| good
2026-06-12T01:00:00.000Z	58 \| moderate	13.247 \| fine	59.364 \| fine	37.127 \| good	0.705 \| good	6.489 \| good	0.204 \| good
2026-06-12T02:00:00.000Z	62 \| moderate	15.313 \| fine	68.544 \| fine	34.158 \| good	0.605 \| good	6.402 \| good	0.205 \| good
2026-06-12T03:00:00.000Z	62 \| moderate	14.555 \| fine	65.021 \| fine	32.691 \| good	0.457 \| good	4.6 \| good	0.205 \| good
2026-06-12T04:00:00.000Z	64 \| moderate	15.848 \| fine	70.329 \| fine	32.415 \| good	0.491 \| good	5.834 \| good	0.205 \| good
2026-06-12T05:00:00.000Z	67 \| moderate	17.528 \| fine	77.475 \| fine	28.322 \| good	0.652 \| good	7.192 \| good	0.21 \| good
2026-06-12T06:00:00.000Z	62 \| moderate	15.354 \| fine	67.793 \| fine	28.17 \| good	0.615 \| good	4.494 \| good	0.212 \| good
2026-06-12T07:00:00.000Z	62 \| moderate	15.148 \| fine	66.767 \| fine	26.997 \| good	0.611 \| good	4.344 \| good	0.204 \| good
2026-06-12T08:00:00.000Z	49 \| good	9.284 \| good	41.319 \| good	25.89 \| good	0.423 \| good	4.217 \| good	0.204 \| good
2026-06-12T09:00:00.000Z	38 \| good	7.109 \| good	31.31 \| good	25.947 \| good	0.532 \| good	3.513 \| good	0.204 \| good
2026-06-12T10:00:00.000Z	27 \| good	5.128 \| good	22.183 \| good	24.828 \| good	0.339 \| good	3.612 \| good	0.203 \| good
2026-06-12T11:00:00.000Z	27 \| good	4.572 \| good	20.843 \| good	22.86 \| good	0.526 \| good	3.888 \| good	0.203 \| good
2026-06-12T12:00:00.000Z	22 \| good	4.23 \| good	19.113 \| good	22.86 \| good	0.576 \| good	3.896 \| good	0.204 \| good
2026-06-12T13:00:00.000Z	22 \| good	4.287 \| good	19.17 \| good	22.744 \| good	0.601 \| good	3.991 \| good	0.21 \| good
2026-06-12T14:00:00.000Z	22 \| good	3.49 \| good	15.67 \| good	23.501 \| good	0.483 \| good	4.855 \| good	0.205 \| good
2026-06-12T15:00:00.000Z	21 \| good	2.856 \| good	12.585 \| good	23.453 \| good	0.581 \| good	6.748 \| good	0.299 \| good
2026-06-12T16:00:00.000Z	21 \| good	2.652 \| good	11.493 \| good	22.56 \| good	0.507 \| good	7.118 \| good	0.305 \| good
2026-06-12T17:00:00.000Z	20 \| good	2.995 \| good	13.102 \| good	22.498 \| good	0.583 \| good	6.184 \| good	0.304 \| good
2026-06-12T18:00:00.000Z	22 \| good	4.177 \| good	19.632 \| good	24.465 \| good	0.477 \| good	6.858 \| good	0.304 \| good
2026-06-12T19:00:00.000Z	24 \| good	4.155 \| good	18.762 \| good	25.918 \| good	0.479 \| good	6.847 \| good	0.304 \| good
2026-06-12T20:00:00.000Z	33 \| good	6.381 \| good	28.988 \| good	31.974 \| good	0.886 \| good	7.733 \| good	0.301 \| good
2026-06-12T21:00:00.000Z	44 \| good	7.662 \| good	34.204 \| good	36.964 \| good	0.843 \| good	5.574 \| good	0.303 \| good
2026-06-12T22:00:00.000Z	38 \| good	7.102 \| good	31.629 \| good	37.042 \| good	0.407 \| good	3.976 \| good	0.209 \| good
2026-06-12T23:00:00.000Z	31 \| good	4.876 \| good	20.822 \| good	32.775 \| good	0.448 \| good	4.294 \| good	0.205 \| good
2026-06-13T00:00:00.000Z	28 \| good	3.086 \| good	13.02 \| good	29.879 \| good	0.468 \| good	3.824 \| good	0.205 \| good
2026-06-13T01:00:00.000Z	28 \| good	3.576 \| good	16.217 \| good	29.698 \| good	0.454 \| good	3.281 \| good	0.205 \| good
2026-06-13T02:00:00.000Z	27 \| good	3.751 \| good	16.882 \| good	29.469 \| good	0.439 \| good	5.578 \| good	0.208 \| good
2026-06-13T02:00:00.000Z	52 \| moderate	9.524 \| good	42.697 \| good	30.212 \| good	0.594 \| good	2.672 \| good	0.112 \| good
2026-06-13T03:00:00.000Z	52 \| moderate	10.379 \| good	45.788 \| good	25.815 \| good	0.615 \| good	3.49 \| good	0.113 \| good
2026-06-13T04:00:00.000Z	49 \| good	9.003 \| good	40.654 \| good	21.945 \| good	0.637 \| good	4.185 \| good	0.114 \| good
2026-06-13T05:00:00.000Z	49 \| good	9.249 \| good	40.883 \| good	15.937 \| good	0.667 \| good	4.209 \| good	0.114 \| good
2026-06-13T06:00:00.000Z	56 \| moderate	12.463 \| fine	56.569 \| fine	15.016 \| good	0.677 \| good	4.228 \| good	0.114 \| good
2026-06-13T07:00:00.000Z	56 \| moderate	11.756 \| good	51.837 \| good	15.585 \| good	0.685 \| good	4.191 \| good	0.115 \| good
2026-06-13T08:00:00.000Z	58 \| moderate	12.629 \| fine	56.672 \| fine	15.047 \| good	0.682 \| good	4.072 \| good	0.115 \| good
2026-06-13T09:00:00.000Z	56 \| moderate	12.361 \| fine	56.504 \| fine	12.514 \| good	0.672 \| good	3.738 \| good	0.113 \| good
2026-06-13T10:00:00.000Z	54 \| moderate	10.787 \| good	47.809 \| good	13.554 \| good	0.664 \| good	3.606 \| good	0.112 \| good
2026-06-13T11:00:00.000Z	49 \| good	9.341 \| good	41.82 \| good	11.779 \| good	0.653 \| good	3.368 \| good	0.111 \| good
2026-06-13T12:00:00.000Z	52 \| moderate	10.103 \| good	44.909 \| good	13.1 \| good	0.645 \| good	3.37 \| good	0.111 \| good
2026-06-13T13:00:00.000Z	52 \| moderate	10.481 \| good	46.838 \| good	12.53 \| good	0.632 \| good	3.375 \| good	0.111 \| good
2026-06-13T14:00:00.000Z	54 \| moderate	11.212 \| good	49.972 \| good	18.684 \| good	0.631 \| good	3.136 \| good	0.111 \| good
2026-06-13T15:00:00.000Z	60 \| moderate	14.357 \| fine	64.666 \| fine	20.42 \| good	0.64 \| good	3.004 \| good	0.11 \| good
2026-06-13T16:00:00.000Z	64 \| moderate	16.048 \| fine	70.825 \| fine	22.59 \| good	0.646 \| good	2.755 \| good	0.109 \| good
2026-06-13T17:00:00.000Z	58 \| moderate	13.339 \| fine	60.396 \| fine	32.405 \| good	0.657 \| good	2.544 \| good	0.109 \| good
2026-06-13T18:00:00.000Z	56 \| moderate	12.033 \| good	54.417 \| good	36.298 \| good	0.67 \| good	2.165 \| good	0.107 \| good
2026-06-13T19:00:00.000Z	52 \| moderate	10.06 \| good	44.623 \| good	38.976 \| good	0.68 \| good	1.786 \| good	0.105 \| good
2026-06-13T20:00:00.000Z	52 \| moderate	9.505 \| good	42.552 \| good	38.588 \| good	0.672 \| good	1.407 \| good	0.103 \| good
2026-06-13T21:00:00.000Z	49 \| good	8.732 \| good	38.655 \| good	39.812 \| good	0.665 \| good	1.206 \| good	0.1 \| good
2026-06-13T22:00:00.000Z	49 \| good	8.649 \| good	37.849 \| good	39.06 \| good	0.66 \| good	1.164 \| good	0.098 \| good
2026-06-13T23:00:00.000Z	49 \| good	9.494 \| good	42.7 \| good	35.253 \| good	0.643 \| good	1.211 \| good	0.096 \| good
2026-06-14T00:00:00.000Z	49 \| good	8.63 \| good	37.898 \| good	35.142 \| good	0.62 \| good	1.365 \| good	0.095 \| good
2026-06-14T01:00:00.000Z	49 \| good	9.406 \| good	41.823 \| good	34.968 \| good	0.602 \| good	1.615 \| good	0.093 \| good
2026-06-14T02:00:00.000Z	44 \| good	8.272 \| good	36.08 \| good	31.695 \| good	0.582 \| good	2.11 \| good	0.093 \| good
2026-06-14T03:00:00.000Z	49 \| good	9.017 \| good	40.802 \| good	27.193 \| good	0.572 \| good	2.776 \| good	0.093 \| good
2026-06-14T04:00:00.000Z	49 \| good	8.855 \| good	38.938 \| good	22.145 \| good	0.578 \| good	3.348 \| good	0.094 \| good
2026-06-14T05:00:00.000Z	52 \| moderate	9.526 \| good	42.765 \| good	17.259 \| good	0.595 \| good	3.648 \| good	0.094 \| good
2026-06-14T06:00:00.000Z	54 \| moderate	10.76 \| good	47.793 \| good	12.49 \| good	0.607 \| good	3.98 \| good	0.095 \| good
2026-06-14T07:00:00.000Z	54 \| moderate	11.084 \| good	48.832 \| good	11.798 \| good	0.612 \| good	3.948 \| good	0.095 \| good
2026-06-14T08:00:00.000Z	54 \| moderate	11.474 \| good	50.746 \| good	10.745 \| good	0.607 \| good	3.658 \| good	0.095 \| good
2026-06-14T09:00:00.000Z	54 \| moderate	10.878 \| good	47.799 \| good	8.982 \| good	0.595 \| good	3.54 \| good	0.094 \| good
2026-06-14T10:00:00.000Z	54 \| moderate	11.377 \| good	50.663 \| good	9.045 \| good	0.586 \| good	3.352 \| good	0.093 \| good
2026-06-14T11:00:00.000Z	52 \| moderate	9.752 \| good	42.853 \| good	10.243 \| good	0.568 \| good	3.411 \| good	0.093 \| good
2026-06-14T12:00:00.000Z	44 \| good	7.612 \| good	33.845 \| good	14.339 \| good	0.559 \| good	3.472 \| good	0.093 \| good
2026-06-14T13:00:00.000Z	44 \| good	8.142 \| good	35.838 \| good	13.33 \| good	0.558 \| good	3.694 \| good	0.094 \| good
2026-06-14T14:00:00.000Z	44 \| good	8.165 \| good	35.953 \| good	20.404 \| good	0.56 \| good	3.332 \| good	0.094 \| good
2026-06-14T15:00:00.000Z	54 \| moderate	11.012 \| good	48.819 \| good	21.469 \| good	0.562 \| good	2.858 \| good	0.093 \| good
2026-06-14T16:00:00.000Z	56 \| moderate	11.966 \| good	53.627 \| good	23.196 \| good	0.563 \| good	2.478 \| good	0.094 \| good
2026-06-14T17:00:00.000Z	52 \| moderate	9.786 \| good	43.605 \| good	29.862 \| good	0.565 \| good	2.086 \| good	0.094 \| good
2026-06-14T18:00:00.000Z	49 \| good	8.964 \| good	40.498 \| good	33.127 \| good	0.561 \| good	1.714 \| good	0.094 \| good
2026-06-14T19:00:00.000Z	44 \| good	7.75 \| good	33.787 \| good	35.91 \| good	0.551 \| good	1.407 \| good	0.093 \| good
2026-06-14T20:00:00.000Z	33 \| good	6.266 \| good	27.693 \| good	35.044 \| good	0.546 \| good	1.172 \| good	0.092 \| good
2026-06-14T21:00:00.000Z	38 \| good	6.675 \| good	29.707 \| good	33.217 \| good	0.523 \| good	1.028 \| good	0.092 \| good
2026-06-14T22:00:00.000Z	28 \| good	5.25 \| good	22.937 \| good	29.972 \| good	0.506 \| good	0.958 \| good	0.091 \| good
2026-06-14T23:00:00.000Z	33 \| good	6.359 \| good	27.893 \| good	25.133 \| good	0.495 \| good	0.982 \| good	0.091 \| good
2026-06-15T00:00:00.000Z	60 \| moderate	13.632 \| fine	20.673 \| good	41.22 \| good	0.487 \| good	1.124 \| good	0.091 \| good
2026-06-15T01:00:00.000Z	38 \| good	7.067 \| good	30.943 \| good	28.198 \| good	0.495 \| good	1.595 \| good	0.092 \| good

Live air quality index in Menlo Park, California today

Major air pollutants in Menlo Park, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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North Fair Oaks, California

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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 level in Menlo Park, California at the moment?

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What is the ozone (O₃) level in Menlo Park, California at the moment?

What is the nitrogen dioxide (NO₂) level in Menlo Park, California at the moment?