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 0.853 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 15.151 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 8.141 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 11.822 μg/m3.

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

The PM10 concentration in Menlo Park, California is 53.725 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)

Moderate

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)

14.28 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

64.98 μg/m³

155

255

425

605+

Ozone (O₃)

17.09 ppb

201

201+

Sulfur Dioxide (SO₂)

0.88 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.62 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.49 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2026-01-22T02:00:00.000Z	60 \| moderate	14.28 \| fine	63.974 \| fine	5.715 \| good	0.787 \| good	22.024 \| good	0.776 \| good
2026-01-22T03:00:00.000Z	58 \| moderate	13.4 \| fine	60.969 \| fine	3.321 \| good	0.815 \| good	20.231 \| good	0.698 \| good
2026-01-22T04:00:00.000Z	56 \| moderate	12.04 \| good	53.119 \| good	3.327 \| good	0.781 \| good	21.059 \| good	0.602 \| good
2026-01-22T05:00:00.000Z	58 \| moderate	12.964 \| fine	57.56 \| fine	3.337 \| good	0.783 \| good	21.546 \| good	0.69 \| good
2026-01-22T06:00:00.000Z	62 \| moderate	14.548 \| fine	64.716 \| fine	1.437 \| good	0.844 \| good	19.66 \| good	0.971 \| good
2026-01-22T07:00:00.000Z	62 \| moderate	14.508 \| fine	64.886 \| fine	5.155 \| good	0.83 \| good	19.778 \| good	0.977 \| good
2026-01-22T08:00:00.000Z	62 \| moderate	14.679 \| fine	64.605 \| fine	4.703 \| good	0.907 \| good	17.641 \| good	0.975 \| good
2026-01-22T09:00:00.000Z	60 \| moderate	13.509 \| fine	61.058 \| fine	4.2 \| good	0.836 \| good	16.63 \| good	0.795 \| good
2026-01-22T10:00:00.000Z	60 \| moderate	14.157 \| fine	62.49 \| fine	6.159 \| good	0.844 \| good	15.182 \| good	0.702 \| good
2026-01-22T11:00:00.000Z	56 \| moderate	11.913 \| good	52.882 \| good	4.087 \| good	0.817 \| good	13.895 \| good	0.696 \| good
2026-01-22T12:00:00.000Z	56 \| moderate	11.926 \| good	52.42 \| good	3.759 \| good	0.804 \| good	13.777 \| good	0.695 \| good
2026-01-22T13:00:00.000Z	56 \| moderate	11.855 \| good	52.465 \| good	3.084 \| good	0.797 \| good	13.757 \| good	0.698 \| good
2026-01-22T14:00:00.000Z	54 \| moderate	11.155 \| good	48.802 \| good	3.237 \| good	0.768 \| good	12.75 \| good	0.697 \| good
2026-01-22T15:00:00.000Z	52 \| moderate	10.19 \| good	45.972 \| good	2.353 \| good	0.794 \| good	11.706 \| good	0.888 \| good
2026-01-22T16:00:00.000Z	54 \| moderate	10.602 \| good	47.021 \| good	1.435 \| good	0.766 \| good	16.154 \| good	1.174 \| good
2026-01-22T17:00:00.000Z	49 \| good	8.984 \| good	39.481 \| good	2.423 \| good	0.821 \| good	15.882 \| good	0.995 \| good
2026-01-22T18:00:00.000Z	66 \| moderate	17.003 \| fine	74.995 \| fine	3.535 \| good	0.953 \| good	12.23 \| good	0.631 \| good
2026-01-22T19:00:00.000Z	66 \| moderate	17.025 \| fine	76.422 \| fine	4.592 \| good	0.925 \| good	11.704 \| good	0.617 \| good
2026-01-22T20:00:00.000Z	64 \| moderate	15.692 \| fine	68.979 \| fine	5.526 \| good	1.077 \| good	13.074 \| good	0.607 \| good
2026-01-22T21:00:00.000Z	62 \| moderate	14.877 \| fine	64.616 \| fine	6.49 \| good	0.987 \| good	12.122 \| good	0.59 \| good
2026-01-22T22:00:00.000Z	60 \| moderate	13.647 \| fine	61.013 \| fine	9.219 \| good	0.801 \| good	11.283 \| good	0.489 \| good
2026-01-22T23:00:00.000Z	58 \| moderate	12.773 \| fine	57.445 \| fine	12.478 \| good	0.974 \| good	10.345 \| good	0.492 \| good
2026-01-23T00:00:00.000Z	58 \| moderate	12.633 \| fine	55.813 \| fine	16.177 \| good	0.907 \| good	10.193 \| good	0.492 \| good
2026-01-23T01:00:00.000Z	58 \| moderate	12.595 \| fine	56.636 \| fine	17.239 \| good	0.836 \| good	15.479 \| good	0.488 \| good
2026-01-23T02:00:00.000Z	58 \| moderate	13.21 \| fine	60.337 \| fine	16.404 \| good	1.429 \| good	17.083 \| good	0.584 \| good
2026-01-23T03:00:00.000Z	56 \| moderate	11.524 \| good	50.534 \| good	12.547 \| good	0.884 \| good	21.885 \| good	0.589 \| good
2026-01-23T04:00:00.000Z	54 \| moderate	10.517 \| good	46.713 \| good	12.319 \| good	0.73 \| good	20.103 \| good	0.681 \| good
2026-01-23T05:00:00.000Z	54 \| moderate	10.902 \| good	48.408 \| good	11.171 \| good	0.63 \| good	19.978 \| good	0.783 \| good
2026-01-23T06:00:00.000Z	56 \| moderate	11.738 \| good	51.273 \| good	7.568 \| good	0.546 \| good	19.183 \| good	0.774 \| good
2026-01-23T07:00:00.000Z	56 \| moderate	11.557 \| good	51.254 \| good	4.479 \| good	0.466 \| good	19.493 \| good	0.78 \| good
2026-01-23T08:00:00.000Z	58 \| moderate	13.198 \| fine	59.82 \| fine	3.403 \| good	0.486 \| good	15.499 \| good	0.689 \| good
2026-01-23T09:00:00.000Z	58 \| moderate	13.131 \| fine	57.909 \| fine	2.403 \| good	0.513 \| good	14.786 \| good	0.601 \| good
2026-01-23T10:00:00.000Z	56 \| moderate	11.813 \| good	51.94 \| good	1.579 \| good	0.58 \| good	11.802 \| good	0.601 \| good
2026-01-23T11:00:00.000Z	58 \| moderate	13.088 \| fine	59.285 \| fine	1.424 \| good	0.563 \| good	11.251 \| good	0.514 \| good
2026-01-23T12:00:00.000Z	52 \| moderate	9.8 \| good	43.676 \| good	9.623 \| good	0.381 \| good	11.135 \| good	0.512 \| good
2026-01-23T13:00:00.000Z	52 \| moderate	9.741 \| good	43.579 \| good	4.005 \| good	0.959 \| good	11.073 \| good	0.498 \| good
2026-01-23T14:00:00.000Z	49 \| good	9.253 \| good	41.4 \| good	2.399 \| good	0.906 \| good	12.098 \| good	0.491 \| good
2026-01-23T15:00:00.000Z	49 \| good	9.14 \| good	41.128 \| good	3.484 \| good	0.915 \| good	14.736 \| good	0.579 \| good
2026-01-23T16:00:00.000Z	49 \| good	8.677 \| good	37.534 \| good	3.653 \| good	0.775 \| good	15.952 \| good	0.58 \| good
2026-01-23T17:00:00.000Z	49 \| good	8.834 \| good	39.449 \| good	5.569 \| good	0.675 \| good	11.227 \| good	0.491 \| good
2026-01-23T18:00:00.000Z	49 \| good	8.963 \| good	39.193 \| good	8.387 \| good	0.649 \| good	11.126 \| good	0.489 \| good
2026-01-23T19:00:00.000Z	56 \| moderate	11.838 \| good	53.77 \| good	10.392 \| good	0.82 \| good	6.478 \| good	0.489 \| good
2026-01-23T20:00:00.000Z	58 \| moderate	12.773 \| fine	57.887 \| fine	13.248 \| good	1.069 \| good	8.387 \| good	0.487 \| good
2026-01-23T21:00:00.000Z	56 \| moderate	11.822 \| good	53.725 \| good	15.151 \| good	0.853 \| good	8.141 \| good	0.487 \| good
2026-01-23T22:00:00.000Z	58 \| moderate	13.251 \| fine	59.876 \| fine	17.945 \| good	0.763 \| good	8.078 \| good	0.489 \| good
2026-01-23T23:00:00.000Z	58 \| moderate	12.698 \| fine	56.615 \| fine	18.03 \| good	0.893 \| good	7.163 \| good	0.487 \| good
2026-01-24T00:00:00.000Z	60 \| moderate	14.283 \| fine	64.984 \| fine	17.09 \| good	0.881 \| good	6.622 \| good	0.487 \| good
2026-01-24T01:00:00.000Z	60 \| moderate	14.283 \| fine	64.984 \| fine	17.09 \| good	0.881 \| good	6.622 \| good	0.487 \| good
2026-01-23T23:00:00.000Z	64 \| moderate	16.467 \| fine	73.212 \| fine	31.511 \| good	2.44 \| good	8.62 \| good	0.217 \| good
2026-01-24T00:00:00.000Z	71 \| moderate	20.022 \| fine	87.304 \| fine	23.716 \| good	2.523 \| good	9.312 \| good	0.219 \| good
2026-01-24T01:00:00.000Z	71 \| moderate	20.47 \| fine	90.746 \| fine	16.386 \| good	2.533 \| good	13.475 \| good	0.252 \| good
2026-01-24T02:00:00.000Z	79 \| moderate	23.827 \| fine	104.502 \| fine	11.417 \| good	2.543 \| good	17.638 \| good	0.286 \| good
2026-01-24T03:00:00.000Z	71 \| moderate	19.831 \| fine	86.764 \| fine	12.045 \| good	2.553 \| good	21.802 \| good	0.319 \| good
2026-01-24T04:00:00.000Z	69 \| moderate	19.294 \| fine	84.854 \| fine	16.84 \| good	2.727 \| good	22.717 \| good	0.336 \| good
2026-01-24T05:00:00.000Z	69 \| moderate	18.664 \| fine	82.824 \| fine	19.13 \| good	2.902 \| good	23.633 \| good	0.353 \| good
2026-01-24T06:00:00.000Z	69 \| moderate	18.965 \| fine	82.967 \| fine	14.729 \| good	3.076 \| good	24.549 \| good	0.369 \| good
2026-01-24T07:00:00.000Z	66 \| moderate	17.133 \| fine	77.007 \| fine	13.319 \| good	2.948 \| good	23.873 \| good	0.366 \| good
2026-01-24T08:00:00.000Z	56 \| moderate	12.06 \| good	54.274 \| good	14.554 \| good	2.821 \| good	23.198 \| good	0.363 \| good
2026-01-24T09:00:00.000Z	49 \| good	9.483 \| good	42.385 \| good	10.536 \| good	2.694 \| good	22.523 \| good	0.359 \| good
2026-01-24T10:00:00.000Z	27 \| good	5.034 \| good	21.623 \| good	8.751 \| good	2.622 \| good	21.863 \| good	0.351 \| good
2026-01-24T11:00:00.000Z	33 \| good	6.091 \| good	27.446 \| good	7.392 \| good	2.55 \| good	21.204 \| good	0.342 \| good
2026-01-24T12:00:00.000Z	33 \| good	5.887 \| good	25.404 \| good	5.051 \| good	2.478 \| good	20.545 \| good	0.334 \| good
2026-01-24T13:00:00.000Z	27 \| good	5.294 \| good	23.344 \| good	5.516 \| good	2.542 \| good	20.707 \| good	0.32 \| good
2026-01-24T14:00:00.000Z	33 \| good	5.876 \| good	25.252 \| good	4.927 \| good	2.606 \| good	20.868 \| good	0.307 \| good
2026-01-24T15:00:00.000Z	52 \| moderate	10.257 \| good	44.876 \| good	6.298 \| good	2.67 \| good	21.03 \| good	0.293 \| good
2026-01-24T16:00:00.000Z	49 \| good	9.224 \| good	40.929 \| good	9.131 \| good	2.388 \| good	18.266 \| good	0.275 \| good
2026-01-24T17:00:00.000Z	44 \| good	8.275 \| good	36.015 \| good	20.152 \| good	2.106 \| good	15.502 \| good	0.257 \| good
2026-01-24T18:00:00.000Z	24 \| good	2.82 \| good	11.319 \| good	26.073 \| good	1.825 \| good	12.739 \| good	0.239 \| good
2026-01-24T19:00:00.000Z	24 \| good	3.591 \| good	16.109 \| good	25.502 \| good	1.564 \| good	10.115 \| good	0.21 \| good
2026-01-24T20:00:00.000Z	26 \| good	3.139 \| good	14.115 \| good	27.577 \| good	1.304 \| good	7.491 \| good	0.181 \| good
2026-01-24T21:00:00.000Z	27 \| good	5.016 \| good	21.882 \| good	27.326 \| good	1.043 \| good	4.867 \| good	0.151 \| good
2026-01-24T22:00:00.000Z	28 \| good	1.823 \| good	8.028 \| good	29.56 \| good	1.023 \| good	5.229 \| good	0.15 \| good
2026-01-24T23:00:00.000Z	27 \| good	0.405 \| good	1.121 \| good	29.063 \| good	1.004 \| good	5.591 \| good	0.149 \| good
2026-01-25T00:00:00.000Z	28 \| good	0.816 \| good	3.111 \| good	30.059 \| good	0.984 \| good	5.954 \| good	0.148 \| good
2026-01-25T01:00:00.000Z	19 \| good	0.902 \| good	3.128 \| good	19.575 \| good	1.106 \| good	12.202 \| good	0.183 \| good
2026-01-25T02:00:00.000Z	27 \| good	4.59 \| good	19.957 \| good	11.411 \| good	1.229 \| good	18.45 \| good	0.219 \| good
2026-01-25T03:00:00.000Z	27 \| good	5.241 \| good	22.999 \| good	8.099 \| good	1.351 \| good	24.698 \| good	0.254 \| good
2026-01-25T04:00:00.000Z	25 \| good	3.686 \| good	16.151 \| good	8.168 \| good	1.418 \| good	25.76 \| good	0.269 \| good
2026-01-25T05:00:00.000Z	25 \| good	2.72 \| good	11.271 \| good	11.858 \| good	1.486 \| good	26.822 \| good	0.284 \| good
2026-01-25T06:00:00.000Z	26 \| good	1.376 \| good	5.384 \| good	13.576 \| good	1.553 \| good	27.884 \| good	0.299 \| good
2026-01-25T07:00:00.000Z	25 \| good	1.718 \| good	7.307 \| good	9.407 \| good	1.406 \| good	27.102 \| good	0.298 \| good
2026-01-25T08:00:00.000Z	25 \| good	2.1 \| good	8.369 \| good	7.291 \| good	1.258 \| good	26.32 \| good	0.298 \| good
2026-01-25T09:00:00.000Z	25 \| good	3.515 \| good	15.232 \| good	4.558 \| good	1.11 \| good	25.537 \| good	0.297 \| good
2026-01-25T10:00:00.000Z	23 \| good	1.671 \| good	6.403 \| good	2.21 \| good	1.014 \| good	24.343 \| good	0.285 \| good
2026-01-25T11:00:00.000Z	22 \| good	1.848 \| good	7.459 \| good	2.987 \| good	0.919 \| good	23.149 \| good	0.273 \| good
2026-01-25T12:00:00.000Z	21 \| good	1.741 \| good	7.421 \| good	1.324 \| good	0.823 \| good	21.955 \| good	0.261 \| good
2026-01-25T13:00:00.000Z	21 \| good	1.689 \| good	7.263 \| good	1.582 \| good	0.89 \| good	21.643 \| good	0.252 \| good
2026-01-25T14:00:00.000Z	20 \| good	1.109 \| good	4.198 \| good	2.624 \| good	0.958 \| good	21.331 \| good	0.243 \| good
2026-01-25T15:00:00.000Z	20 \| good	2.029 \| good	8.171 \| good	3.755 \| good	1.025 \| good	21.019 \| good	0.235 \| good
2026-01-25T16:00:00.000Z	18 \| good	3.287 \| good	14.113 \| good	4.597 \| good	1.1 \| good	19.093 \| good	0.244 \| good
2026-01-25T17:00:00.000Z	54 \| moderate	10.596 \| good	46.863 \| good	10.8 \| good	1.176 \| good	17.168 \| good	0.253 \| good
2026-01-25T18:00:00.000Z	44 \| good	7.705 \| good	34.054 \| good	17.11 \| good	1.251 \| good	15.242 \| good	0.262 \| good
2026-01-25T19:00:00.000Z	44 \| good	7.529 \| good	33.004 \| good	21.626 \| good	1.326 \| good	13.273 \| good	0.243 \| good
2026-01-25T20:00:00.000Z	44 \| good	7.619 \| good	33.934 \| good	25.522 \| good	1.4 \| good	11.303 \| good	0.225 \| good
2026-01-25T21:00:00.000Z	33 \| good	5.808 \| good	25.02 \| good	26.426 \| good	1.475 \| good	9.334 \| good	0.206 \| good
2026-01-25T22:00:00.000Z	29 \| good	3.037 \| good	12.297 \| good	31.175 \| good	1.495 \| good	10.334 \| good	0.212 \| good

Menlo Park

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Menlo Park, 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 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 10:00:00 on 2026-01-22.

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 06:00:00 on 2026-01-23.

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

As of now, the AQI in Menlo Park, California is 56, indicating Moderate conditions.

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

Menlo Park, California air has the highest levels of PM2.5.

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 11.822 μg/m³.

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

The PM₁₀ concentration in Menlo Park, California is 53.725 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 0.487 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 0.853 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 15.151 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 8.141 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-22T02:00:00.000Z	60 \| moderate	14.28 \| fine	63.974 \| fine	5.715 \| good	0.787 \| good	22.024 \| good	0.776 \| good
2026-01-22T03:00:00.000Z	58 \| moderate	13.4 \| fine	60.969 \| fine	3.321 \| good	0.815 \| good	20.231 \| good	0.698 \| good
2026-01-22T04:00:00.000Z	56 \| moderate	12.04 \| good	53.119 \| good	3.327 \| good	0.781 \| good	21.059 \| good	0.602 \| good
2026-01-22T05:00:00.000Z	58 \| moderate	12.964 \| fine	57.56 \| fine	3.337 \| good	0.783 \| good	21.546 \| good	0.69 \| good
2026-01-22T06:00:00.000Z	62 \| moderate	14.548 \| fine	64.716 \| fine	1.437 \| good	0.844 \| good	19.66 \| good	0.971 \| good
2026-01-22T07:00:00.000Z	62 \| moderate	14.508 \| fine	64.886 \| fine	5.155 \| good	0.83 \| good	19.778 \| good	0.977 \| good
2026-01-22T08:00:00.000Z	62 \| moderate	14.679 \| fine	64.605 \| fine	4.703 \| good	0.907 \| good	17.641 \| good	0.975 \| good
2026-01-22T09:00:00.000Z	60 \| moderate	13.509 \| fine	61.058 \| fine	4.2 \| good	0.836 \| good	16.63 \| good	0.795 \| good
2026-01-22T10:00:00.000Z	60 \| moderate	14.157 \| fine	62.49 \| fine	6.159 \| good	0.844 \| good	15.182 \| good	0.702 \| good
2026-01-22T11:00:00.000Z	56 \| moderate	11.913 \| good	52.882 \| good	4.087 \| good	0.817 \| good	13.895 \| good	0.696 \| good
2026-01-22T12:00:00.000Z	56 \| moderate	11.926 \| good	52.42 \| good	3.759 \| good	0.804 \| good	13.777 \| good	0.695 \| good
2026-01-22T13:00:00.000Z	56 \| moderate	11.855 \| good	52.465 \| good	3.084 \| good	0.797 \| good	13.757 \| good	0.698 \| good
2026-01-22T14:00:00.000Z	54 \| moderate	11.155 \| good	48.802 \| good	3.237 \| good	0.768 \| good	12.75 \| good	0.697 \| good
2026-01-22T15:00:00.000Z	52 \| moderate	10.19 \| good	45.972 \| good	2.353 \| good	0.794 \| good	11.706 \| good	0.888 \| good
2026-01-22T16:00:00.000Z	54 \| moderate	10.602 \| good	47.021 \| good	1.435 \| good	0.766 \| good	16.154 \| good	1.174 \| good
2026-01-22T17:00:00.000Z	49 \| good	8.984 \| good	39.481 \| good	2.423 \| good	0.821 \| good	15.882 \| good	0.995 \| good
2026-01-22T18:00:00.000Z	66 \| moderate	17.003 \| fine	74.995 \| fine	3.535 \| good	0.953 \| good	12.23 \| good	0.631 \| good
2026-01-22T19:00:00.000Z	66 \| moderate	17.025 \| fine	76.422 \| fine	4.592 \| good	0.925 \| good	11.704 \| good	0.617 \| good
2026-01-22T20:00:00.000Z	64 \| moderate	15.692 \| fine	68.979 \| fine	5.526 \| good	1.077 \| good	13.074 \| good	0.607 \| good
2026-01-22T21:00:00.000Z	62 \| moderate	14.877 \| fine	64.616 \| fine	6.49 \| good	0.987 \| good	12.122 \| good	0.59 \| good
2026-01-22T22:00:00.000Z	60 \| moderate	13.647 \| fine	61.013 \| fine	9.219 \| good	0.801 \| good	11.283 \| good	0.489 \| good
2026-01-22T23:00:00.000Z	58 \| moderate	12.773 \| fine	57.445 \| fine	12.478 \| good	0.974 \| good	10.345 \| good	0.492 \| good
2026-01-23T00:00:00.000Z	58 \| moderate	12.633 \| fine	55.813 \| fine	16.177 \| good	0.907 \| good	10.193 \| good	0.492 \| good
2026-01-23T01:00:00.000Z	58 \| moderate	12.595 \| fine	56.636 \| fine	17.239 \| good	0.836 \| good	15.479 \| good	0.488 \| good
2026-01-23T02:00:00.000Z	58 \| moderate	13.21 \| fine	60.337 \| fine	16.404 \| good	1.429 \| good	17.083 \| good	0.584 \| good
2026-01-23T03:00:00.000Z	56 \| moderate	11.524 \| good	50.534 \| good	12.547 \| good	0.884 \| good	21.885 \| good	0.589 \| good
2026-01-23T04:00:00.000Z	54 \| moderate	10.517 \| good	46.713 \| good	12.319 \| good	0.73 \| good	20.103 \| good	0.681 \| good
2026-01-23T05:00:00.000Z	54 \| moderate	10.902 \| good	48.408 \| good	11.171 \| good	0.63 \| good	19.978 \| good	0.783 \| good
2026-01-23T06:00:00.000Z	56 \| moderate	11.738 \| good	51.273 \| good	7.568 \| good	0.546 \| good	19.183 \| good	0.774 \| good
2026-01-23T07:00:00.000Z	56 \| moderate	11.557 \| good	51.254 \| good	4.479 \| good	0.466 \| good	19.493 \| good	0.78 \| good
2026-01-23T08:00:00.000Z	58 \| moderate	13.198 \| fine	59.82 \| fine	3.403 \| good	0.486 \| good	15.499 \| good	0.689 \| good
2026-01-23T09:00:00.000Z	58 \| moderate	13.131 \| fine	57.909 \| fine	2.403 \| good	0.513 \| good	14.786 \| good	0.601 \| good
2026-01-23T10:00:00.000Z	56 \| moderate	11.813 \| good	51.94 \| good	1.579 \| good	0.58 \| good	11.802 \| good	0.601 \| good
2026-01-23T11:00:00.000Z	58 \| moderate	13.088 \| fine	59.285 \| fine	1.424 \| good	0.563 \| good	11.251 \| good	0.514 \| good
2026-01-23T12:00:00.000Z	52 \| moderate	9.8 \| good	43.676 \| good	9.623 \| good	0.381 \| good	11.135 \| good	0.512 \| good
2026-01-23T13:00:00.000Z	52 \| moderate	9.741 \| good	43.579 \| good	4.005 \| good	0.959 \| good	11.073 \| good	0.498 \| good
2026-01-23T14:00:00.000Z	49 \| good	9.253 \| good	41.4 \| good	2.399 \| good	0.906 \| good	12.098 \| good	0.491 \| good
2026-01-23T15:00:00.000Z	49 \| good	9.14 \| good	41.128 \| good	3.484 \| good	0.915 \| good	14.736 \| good	0.579 \| good
2026-01-23T16:00:00.000Z	49 \| good	8.677 \| good	37.534 \| good	3.653 \| good	0.775 \| good	15.952 \| good	0.58 \| good
2026-01-23T17:00:00.000Z	49 \| good	8.834 \| good	39.449 \| good	5.569 \| good	0.675 \| good	11.227 \| good	0.491 \| good
2026-01-23T18:00:00.000Z	49 \| good	8.963 \| good	39.193 \| good	8.387 \| good	0.649 \| good	11.126 \| good	0.489 \| good
2026-01-23T19:00:00.000Z	56 \| moderate	11.838 \| good	53.77 \| good	10.392 \| good	0.82 \| good	6.478 \| good	0.489 \| good
2026-01-23T20:00:00.000Z	58 \| moderate	12.773 \| fine	57.887 \| fine	13.248 \| good	1.069 \| good	8.387 \| good	0.487 \| good
2026-01-23T21:00:00.000Z	56 \| moderate	11.822 \| good	53.725 \| good	15.151 \| good	0.853 \| good	8.141 \| good	0.487 \| good
2026-01-23T22:00:00.000Z	58 \| moderate	13.251 \| fine	59.876 \| fine	17.945 \| good	0.763 \| good	8.078 \| good	0.489 \| good
2026-01-23T23:00:00.000Z	58 \| moderate	12.698 \| fine	56.615 \| fine	18.03 \| good	0.893 \| good	7.163 \| good	0.487 \| good
2026-01-24T00:00:00.000Z	60 \| moderate	14.283 \| fine	64.984 \| fine	17.09 \| good	0.881 \| good	6.622 \| good	0.487 \| good
2026-01-24T01:00:00.000Z	60 \| moderate	14.283 \| fine	64.984 \| fine	17.09 \| good	0.881 \| good	6.622 \| good	0.487 \| good
2026-01-23T23:00:00.000Z	64 \| moderate	16.467 \| fine	73.212 \| fine	31.511 \| good	2.44 \| good	8.62 \| good	0.217 \| good
2026-01-24T00:00:00.000Z	71 \| moderate	20.022 \| fine	87.304 \| fine	23.716 \| good	2.523 \| good	9.312 \| good	0.219 \| good
2026-01-24T01:00:00.000Z	71 \| moderate	20.47 \| fine	90.746 \| fine	16.386 \| good	2.533 \| good	13.475 \| good	0.252 \| good
2026-01-24T02:00:00.000Z	79 \| moderate	23.827 \| fine	104.502 \| fine	11.417 \| good	2.543 \| good	17.638 \| good	0.286 \| good
2026-01-24T03:00:00.000Z	71 \| moderate	19.831 \| fine	86.764 \| fine	12.045 \| good	2.553 \| good	21.802 \| good	0.319 \| good
2026-01-24T04:00:00.000Z	69 \| moderate	19.294 \| fine	84.854 \| fine	16.84 \| good	2.727 \| good	22.717 \| good	0.336 \| good
2026-01-24T05:00:00.000Z	69 \| moderate	18.664 \| fine	82.824 \| fine	19.13 \| good	2.902 \| good	23.633 \| good	0.353 \| good
2026-01-24T06:00:00.000Z	69 \| moderate	18.965 \| fine	82.967 \| fine	14.729 \| good	3.076 \| good	24.549 \| good	0.369 \| good
2026-01-24T07:00:00.000Z	66 \| moderate	17.133 \| fine	77.007 \| fine	13.319 \| good	2.948 \| good	23.873 \| good	0.366 \| good
2026-01-24T08:00:00.000Z	56 \| moderate	12.06 \| good	54.274 \| good	14.554 \| good	2.821 \| good	23.198 \| good	0.363 \| good
2026-01-24T09:00:00.000Z	49 \| good	9.483 \| good	42.385 \| good	10.536 \| good	2.694 \| good	22.523 \| good	0.359 \| good
2026-01-24T10:00:00.000Z	27 \| good	5.034 \| good	21.623 \| good	8.751 \| good	2.622 \| good	21.863 \| good	0.351 \| good
2026-01-24T11:00:00.000Z	33 \| good	6.091 \| good	27.446 \| good	7.392 \| good	2.55 \| good	21.204 \| good	0.342 \| good
2026-01-24T12:00:00.000Z	33 \| good	5.887 \| good	25.404 \| good	5.051 \| good	2.478 \| good	20.545 \| good	0.334 \| good
2026-01-24T13:00:00.000Z	27 \| good	5.294 \| good	23.344 \| good	5.516 \| good	2.542 \| good	20.707 \| good	0.32 \| good
2026-01-24T14:00:00.000Z	33 \| good	5.876 \| good	25.252 \| good	4.927 \| good	2.606 \| good	20.868 \| good	0.307 \| good
2026-01-24T15:00:00.000Z	52 \| moderate	10.257 \| good	44.876 \| good	6.298 \| good	2.67 \| good	21.03 \| good	0.293 \| good
2026-01-24T16:00:00.000Z	49 \| good	9.224 \| good	40.929 \| good	9.131 \| good	2.388 \| good	18.266 \| good	0.275 \| good
2026-01-24T17:00:00.000Z	44 \| good	8.275 \| good	36.015 \| good	20.152 \| good	2.106 \| good	15.502 \| good	0.257 \| good
2026-01-24T18:00:00.000Z	24 \| good	2.82 \| good	11.319 \| good	26.073 \| good	1.825 \| good	12.739 \| good	0.239 \| good
2026-01-24T19:00:00.000Z	24 \| good	3.591 \| good	16.109 \| good	25.502 \| good	1.564 \| good	10.115 \| good	0.21 \| good
2026-01-24T20:00:00.000Z	26 \| good	3.139 \| good	14.115 \| good	27.577 \| good	1.304 \| good	7.491 \| good	0.181 \| good
2026-01-24T21:00:00.000Z	27 \| good	5.016 \| good	21.882 \| good	27.326 \| good	1.043 \| good	4.867 \| good	0.151 \| good
2026-01-24T22:00:00.000Z	28 \| good	1.823 \| good	8.028 \| good	29.56 \| good	1.023 \| good	5.229 \| good	0.15 \| good
2026-01-24T23:00:00.000Z	27 \| good	0.405 \| good	1.121 \| good	29.063 \| good	1.004 \| good	5.591 \| good	0.149 \| good
2026-01-25T00:00:00.000Z	28 \| good	0.816 \| good	3.111 \| good	30.059 \| good	0.984 \| good	5.954 \| good	0.148 \| good
2026-01-25T01:00:00.000Z	19 \| good	0.902 \| good	3.128 \| good	19.575 \| good	1.106 \| good	12.202 \| good	0.183 \| good
2026-01-25T02:00:00.000Z	27 \| good	4.59 \| good	19.957 \| good	11.411 \| good	1.229 \| good	18.45 \| good	0.219 \| good
2026-01-25T03:00:00.000Z	27 \| good	5.241 \| good	22.999 \| good	8.099 \| good	1.351 \| good	24.698 \| good	0.254 \| good
2026-01-25T04:00:00.000Z	25 \| good	3.686 \| good	16.151 \| good	8.168 \| good	1.418 \| good	25.76 \| good	0.269 \| good
2026-01-25T05:00:00.000Z	25 \| good	2.72 \| good	11.271 \| good	11.858 \| good	1.486 \| good	26.822 \| good	0.284 \| good
2026-01-25T06:00:00.000Z	26 \| good	1.376 \| good	5.384 \| good	13.576 \| good	1.553 \| good	27.884 \| good	0.299 \| good
2026-01-25T07:00:00.000Z	25 \| good	1.718 \| good	7.307 \| good	9.407 \| good	1.406 \| good	27.102 \| good	0.298 \| good
2026-01-25T08:00:00.000Z	25 \| good	2.1 \| good	8.369 \| good	7.291 \| good	1.258 \| good	26.32 \| good	0.298 \| good
2026-01-25T09:00:00.000Z	25 \| good	3.515 \| good	15.232 \| good	4.558 \| good	1.11 \| good	25.537 \| good	0.297 \| good
2026-01-25T10:00:00.000Z	23 \| good	1.671 \| good	6.403 \| good	2.21 \| good	1.014 \| good	24.343 \| good	0.285 \| good
2026-01-25T11:00:00.000Z	22 \| good	1.848 \| good	7.459 \| good	2.987 \| good	0.919 \| good	23.149 \| good	0.273 \| good
2026-01-25T12:00:00.000Z	21 \| good	1.741 \| good	7.421 \| good	1.324 \| good	0.823 \| good	21.955 \| good	0.261 \| good
2026-01-25T13:00:00.000Z	21 \| good	1.689 \| good	7.263 \| good	1.582 \| good	0.89 \| good	21.643 \| good	0.252 \| good
2026-01-25T14:00:00.000Z	20 \| good	1.109 \| good	4.198 \| good	2.624 \| good	0.958 \| good	21.331 \| good	0.243 \| good
2026-01-25T15:00:00.000Z	20 \| good	2.029 \| good	8.171 \| good	3.755 \| good	1.025 \| good	21.019 \| good	0.235 \| good
2026-01-25T16:00:00.000Z	18 \| good	3.287 \| good	14.113 \| good	4.597 \| good	1.1 \| good	19.093 \| good	0.244 \| good
2026-01-25T17:00:00.000Z	54 \| moderate	10.596 \| good	46.863 \| good	10.8 \| good	1.176 \| good	17.168 \| good	0.253 \| good
2026-01-25T18:00:00.000Z	44 \| good	7.705 \| good	34.054 \| good	17.11 \| good	1.251 \| good	15.242 \| good	0.262 \| good
2026-01-25T19:00:00.000Z	44 \| good	7.529 \| good	33.004 \| good	21.626 \| good	1.326 \| good	13.273 \| good	0.243 \| good
2026-01-25T20:00:00.000Z	44 \| good	7.619 \| good	33.934 \| good	25.522 \| good	1.4 \| good	11.303 \| good	0.225 \| good
2026-01-25T21:00:00.000Z	33 \| good	5.808 \| good	25.02 \| good	26.426 \| good	1.475 \| good	9.334 \| good	0.206 \| good
2026-01-25T22:00:00.000Z	29 \| good	3.037 \| good	12.297 \| good	31.175 \| good	1.495 \| good	10.334 \| good	0.212 \| 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

Stanford, California

Palo Alto, California

East Palo Alto, California

Redwood City, 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?