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

The PM10 concentration in Menlo Park, California is 7.489 μg/m3 at the moment.

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 0.639 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 48.819 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 3.963 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 1.846 μg/m3.

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)

1.85 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

7.49 μg/m³

155

255

425

605+

Ozone (O₃)

48.82 ppb

201

201+

Sulfur Dioxide (SO₂)

0.64 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.96 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

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
2026-04-17T03:00:00.000Z	33 \| good	2.086 \| good	8.041 \| good	36.116 \| good	0.617 \| good	6.687 \| good	0.169 \| good
2026-04-17T04:00:00.000Z	34 \| good	4.996 \| good	21.709 \| good	36.793 \| good	0.363 \| good	5.736 \| good	0.296 \| good
2026-04-17T05:00:00.000Z	32 \| good	4.467 \| good	20.062 \| good	34.995 \| good	0.362 \| good	6.182 \| good	0.297 \| good
2026-04-17T06:00:00.000Z	31 \| good	4.449 \| good	19.671 \| good	34.059 \| good	0.414 \| good	6.143 \| good	0.295 \| good
2026-04-17T07:00:00.000Z	31 \| good	3.759 \| good	16.4 \| good	33.68 \| good	0.448 \| good	6.408 \| good	0.299 \| good
2026-04-17T08:00:00.000Z	30 \| good	3.515 \| good	15.4 \| good	32.478 \| good	0.39 \| good	8.791 \| good	0.298 \| good
2026-04-17T09:00:00.000Z	31 \| good	2.974 \| good	12.351 \| good	33.341 \| good	0.365 \| good	6.803 \| good	0.296 \| good
2026-04-17T10:00:00.000Z	31 \| good	2.085 \| good	8.917 \| good	34.483 \| good	0.397 \| good	6.485 \| good	0.293 \| good
2026-04-17T11:00:00.000Z	32 \| good	1.679 \| good	7.11 \| good	34.551 \| good	0.396 \| good	6.585 \| good	0.293 \| good
2026-04-17T12:00:00.000Z	29 \| good	0.606 \| good	2.425 \| good	30.957 \| good	0.396 \| good	6.558 \| good	0.293 \| good
2026-04-17T13:00:00.000Z	29 \| good	0.53 \| good	2.669 \| good	31.012 \| good	0.426 \| good	6.679 \| good	0.3 \| good
2026-04-17T14:00:00.000Z	25 \| good	2.089 \| good	8.524 \| good	26.777 \| good	0.41 \| good	14.204 \| good	0.391 \| good
2026-04-17T15:00:00.000Z	22 \| good	3.939 \| good	17.713 \| good	21.977 \| good	0.438 \| good	19.598 \| good	0.574 \| good
2026-04-17T16:00:00.000Z	19 \| good	3.391 \| good	15.632 \| good	20.107 \| good	0.524 \| good	8.848 \| good	0.4 \| good
2026-04-17T17:00:00.000Z	32 \| good	3.983 \| good	18 \| good	35.005 \| good	0.766 \| good	5.232 \| good	0.297 \| good
2026-04-17T18:00:00.000Z	22 \| good	3.938 \| good	17.334 \| good	14.234 \| good	0.741 \| good	3.054 \| good	0.199 \| good
2026-04-17T19:00:00.000Z	11 \| good	2.475 \| good	10.045 \| good	7.75 \| good	0.566 \| good	4.423 \| good	0.198 \| good
2026-04-17T20:00:00.000Z	7 \| good	0.409 \| good	1.892 \| good	7.809 \| good	0.443 \| good	3.763 \| good	0.202 \| good
2026-04-17T21:00:00.000Z	11 \| good	1.802 \| good	8.738 \| good	7.989 \| good	0.541 \| good	2.834 \| good	0.202 \| good
2026-04-17T22:00:00.000Z	11 \| good	1.71 \| good	11.358 \| good	8.185 \| good	0.608 \| good	2.806 \| good	0.199 \| good
2026-04-17T23:00:00.000Z	7 \| good	0.462 \| good	2.227 \| good	8.292 \| good	0.907 \| good	3.527 \| good	0.2 \| good
2026-04-18T00:00:00.000Z	7 \| good	0.386 \| good	1.823 \| good	8.272 \| good	0.688 \| good	3.874 \| good	0.293 \| good
2026-04-18T01:00:00.000Z	7 \| good	1.211 \| good	5.517 \| good	8.314 \| good	1.824 \| good	3.426 \| good	0.294 \| good
2026-04-18T02:00:00.000Z	7 \| good	1.063 \| good	4.247 \| good	8.181 \| good	0.928 \| good	3.446 \| good	0.293 \| good
2026-04-18T03:00:00.000Z	7 \| good	1.162 \| good	4.7 \| good	8.097 \| good	0.601 \| good	4.256 \| good	0.296 \| good
2026-04-18T04:00:00.000Z	16 \| good	2.543 \| good	10.263 \| good	7.86 \| good	0.56 \| good	5.512 \| good	0.298 \| good
2026-04-18T05:00:00.000Z	16 \| good	3.283 \| good	14.436 \| good	7.713 \| good	0.497 \| good	5.645 \| good	0.298 \| good
2026-04-18T06:00:00.000Z	16 \| good	3.401 \| good	14.956 \| good	7.382 \| good	0.48 \| good	5.707 \| good	0.299 \| good
2026-04-18T07:00:00.000Z	16 \| good	2.835 \| good	12.004 \| good	7.028 \| good	0.472 \| good	7.122 \| good	0.299 \| good
2026-04-18T08:00:00.000Z	16 \| good	2.538 \| good	10.915 \| good	6.839 \| good	0.489 \| good	5.976 \| good	0.299 \| good
2026-04-18T09:00:00.000Z	16 \| good	2.548 \| good	11.183 \| good	6.839 \| good	0.49 \| good	5.852 \| good	0.299 \| good
2026-04-18T10:00:00.000Z	16 \| good	2.524 \| good	10.977 \| good	6.839 \| good	0.541 \| good	6.617 \| good	0.202 \| good
2026-04-18T11:00:00.000Z	16 \| good	2.692 \| good	17.201 \| good	6.839 \| good	0.524 \| good	6.901 \| good	0.176 \| good
2026-04-18T12:00:00.000Z	31 \| good	4.004 \| good	18.542 \| good	32.711 \| good	0.252 \| good	5.903 \| good	0.398 \| good
2026-04-18T13:00:00.000Z	16 \| good	3.049 \| good	13.147 \| good	16.295 \| good	0.645 \| good	6.436 \| good	0.302 \| good
2026-04-18T14:00:00.000Z	22 \| good	3.616 \| good	15.518 \| good	18.212 \| good	0.491 \| good	11.886 \| good	0.395 \| good
2026-04-18T15:00:00.000Z	20 \| good	3.315 \| good	14.449 \| good	21.517 \| good	0.47 \| good	14.022 \| good	0.49 \| good
2026-04-18T16:00:00.000Z	14 \| good	2.394 \| good	10.512 \| good	15.455 \| good	0.565 \| good	9.454 \| good	0.404 \| good
2026-04-18T17:00:00.000Z	27 \| good	5.003 \| good	22.006 \| good	21.9 \| good	0.655 \| good	10.886 \| good	0.402 \| good
2026-04-18T18:00:00.000Z	33 \| good	6.341 \| good	28.193 \| good	25.406 \| good	0.71 \| good	8.822 \| good	0.395 \| good
2026-04-18T19:00:00.000Z	33 \| good	6.239 \| good	27.993 \| good	28.093 \| good	0.761 \| good	6.817 \| good	0.304 \| good
2026-04-18T20:00:00.000Z	38 \| good	6.666 \| good	30.18 \| good	33.609 \| good	0.793 \| good	6.33 \| good	0.302 \| good
2026-04-18T21:00:00.000Z	38 \| good	5.517 \| good	23.776 \| good	40.544 \| good	0.784 \| good	4.628 \| good	0.302 \| good
2026-04-18T22:00:00.000Z	39 \| good	3.511 \| good	15.621 \| good	41.97 \| good	0.962 \| good	4.083 \| good	0.297 \| good
2026-04-18T23:00:00.000Z	34 \| good	2.888 \| good	12.088 \| good	37.099 \| good	0.636 \| good	4.383 \| good	0.299 \| good
2026-04-19T00:00:00.000Z	44 \| good	2.485 \| good	10.101 \| good	47.394 \| good	0.626 \| good	4.166 \| good	0.299 \| good
2026-04-19T01:00:00.000Z	43 \| good	1.473 \| good	6.49 \| good	45.784 \| good	0.978 \| good	2.545 \| good	0.298 \| good
2026-04-19T02:00:00.000Z	45 \| good	1.846 \| good	7.489 \| good	48.819 \| good	0.639 \| good	3.963 \| good	0.297 \| good
2026-04-19T02:00:00.000Z	45 \| good	1.846 \| good	7.489 \| good	48.819 \| good	0.639 \| good	3.963 \| good	0.297 \| good
2026-04-19T03:00:00.000Z	33 \| good	6.089 \| good	26.85 \| good	32.917 \| good	1.772 \| good	15.292 \| good	0.207 \| good
2026-04-19T04:00:00.000Z	33 \| good	6.369 \| good	28.809 \| good	29.06 \| good	1.799 \| good	17.535 \| good	0.234 \| good
2026-04-19T05:00:00.000Z	33 \| good	5.718 \| good	24.907 \| good	22.48 \| good	1.826 \| good	19.778 \| good	0.26 \| good
2026-04-19T06:00:00.000Z	27 \| good	5.415 \| good	22.945 \| good	18.977 \| good	1.854 \| good	22.021 \| good	0.286 \| good
2026-04-19T07:00:00.000Z	27 \| good	4.606 \| good	19.902 \| good	21.263 \| good	1.726 \| good	21.371 \| good	0.281 \| good
2026-04-19T08:00:00.000Z	22 \| good	4.279 \| good	18.876 \| good	23.067 \| good	1.597 \| good	20.72 \| good	0.275 \| good
2026-04-19T09:00:00.000Z	24 \| good	2.862 \| good	12.038 \| good	25.77 \| good	1.469 \| good	20.07 \| good	0.27 \| good
2026-04-19T10:00:00.000Z	23 \| good	3.105 \| good	13.982 \| good	25.266 \| good	1.409 \| good	19.398 \| good	0.264 \| good
2026-04-19T11:00:00.000Z	22 \| good	3.716 \| good	15.988 \| good	23.322 \| good	1.349 \| good	18.726 \| good	0.259 \| good
2026-04-19T12:00:00.000Z	27 \| good	1.373 \| good	5.214 \| good	29.235 \| good	1.288 \| good	18.053 \| good	0.253 \| good
2026-04-19T13:00:00.000Z	27 \| good	4.566 \| good	20.033 \| good	15.263 \| good	1.374 \| good	16.603 \| good	0.247 \| good
2026-04-19T14:00:00.000Z	38 \| good	7.199 \| good	31.844 \| good	12.898 \| good	1.459 \| good	15.153 \| good	0.24 \| good
2026-04-19T15:00:00.000Z	33 \| good	6.161 \| good	26.963 \| good	26.067 \| good	1.545 \| good	13.704 \| good	0.233 \| good
2026-04-19T16:00:00.000Z	33 \| good	5.594 \| good	24.003 \| good	27.594 \| good	1.513 \| good	10.412 \| good	0.204 \| good
2026-04-19T17:00:00.000Z	29 \| good	5.304 \| good	23.025 \| good	30.537 \| good	1.482 \| good	7.12 \| good	0.175 \| good
2026-04-19T18:00:00.000Z	27 \| good	5.016 \| good	22.018 \| good	28.512 \| good	1.45 \| good	3.827 \| good	0.145 \| good
2026-04-19T19:00:00.000Z	33 \| good	5.671 \| good	23.999 \| good	33.753 \| good	1.283 \| good	3.101 \| good	0.139 \| good
2026-04-19T20:00:00.000Z	31 \| good	3.008 \| good	12.117 \| good	34.118 \| good	1.115 \| good	2.374 \| good	0.133 \| good
2026-04-19T21:00:00.000Z	32 \| good	3.605 \| good	15.957 \| good	34.895 \| good	0.948 \| good	1.648 \| good	0.127 \| good
2026-04-19T22:00:00.000Z	30 \| good	1.923 \| good	8.054 \| good	31.59 \| good	0.877 \| good	1.657 \| good	0.127 \| good
2026-04-19T23:00:00.000Z	28 \| good	1.122 \| good	5.051 \| good	30.433 \| good	0.806 \| good	1.666 \| good	0.126 \| good
2026-04-20T00:00:00.000Z	31 \| good	2.48 \| good	10.006 \| good	33.48 \| good	0.735 \| good	1.675 \| good	0.126 \| good
2026-04-20T01:00:00.000Z	30 \| good	1.382 \| good	5.123 \| good	31.871 \| good	0.756 \| good	2.941 \| good	0.133 \| good
2026-04-20T02:00:00.000Z	30 \| good	2.72 \| good	11.135 \| good	32.106 \| good	0.777 \| good	4.208 \| good	0.14 \| good
2026-04-20T03:00:00.000Z	27 \| good	4.724 \| good	20.864 \| good	24.783 \| good	0.798 \| good	5.475 \| good	0.148 \| good
2026-04-20T04:00:00.000Z	33 \| good	5.509 \| good	23.897 \| good	18.831 \| good	0.852 \| good	6.71 \| good	0.154 \| good
2026-04-20T05:00:00.000Z	22 \| good	4.442 \| good	18.941 \| good	20.431 \| good	0.906 \| good	7.944 \| good	0.161 \| good
2026-04-20T06:00:00.000Z	27 \| good	4.732 \| good	20.893 \| good	20.399 \| good	0.96 \| good	9.178 \| good	0.167 \| good
2026-04-20T07:00:00.000Z	22 \| good	4.459 \| good	18.959 \| good	22.456 \| good	0.919 \| good	9.114 \| good	0.168 \| good
2026-04-20T08:00:00.000Z	25 \| good	4.153 \| good	17.966 \| good	26.896 \| good	0.878 \| good	9.05 \| good	0.169 \| good
2026-04-20T09:00:00.000Z	28 \| good	2.447 \| good	10.034 \| good	30.054 \| good	0.837 \| good	8.985 \| good	0.17 \| good
2026-04-20T10:00:00.000Z	31 \| good	2.956 \| good	12.013 \| good	32.524 \| good	0.799 \| good	7.726 \| good	0.163 \| good
2026-04-20T11:00:00.000Z	28 \| good	3.412 \| good	14.977 \| good	30.097 \| good	0.761 \| good	6.467 \| good	0.155 \| good
2026-04-20T12:00:00.000Z	21 \| good	2.422 \| good	10.053 \| good	22.564 \| good	0.724 \| good	5.208 \| good	0.148 \| good
2026-04-20T13:00:00.000Z	16 \| good	1.264 \| good	5.095 \| good	17.256 \| good	0.713 \| good	5.11 \| good	0.148 \| good
2026-04-20T14:00:00.000Z	27 \| good	4.576 \| good	19.878 \| good	13.436 \| good	0.702 \| good	5.012 \| good	0.148 \| good
2026-04-20T15:00:00.000Z	27 \| good	4.74 \| good	20.893 \| good	24.71 \| good	0.691 \| good	4.914 \| good	0.148 \| good
2026-04-20T16:00:00.000Z	22 \| good	4.048 \| good	17.967 \| good	24.184 \| good	0.657 \| good	4.403 \| good	0.145 \| good
2026-04-20T17:00:00.000Z	26 \| good	1.827 \| good	7.155 \| good	28.483 \| good	0.623 \| good	3.892 \| good	0.141 \| good
2026-04-20T18:00:00.000Z	26 \| good	0.871 \| good	3.219 \| good	27.732 \| good	0.59 \| good	3.381 \| good	0.137 \| good
2026-04-20T19:00:00.000Z	26 \| good	1.81 \| good	7.098 \| good	28.485 \| good	0.518 \| good	2.799 \| good	0.133 \| good
2026-04-20T20:00:00.000Z	31 \| good	0.408 \| good	1.177 \| good	34.192 \| good	0.446 \| good	2.217 \| good	0.129 \| good
2026-04-20T21:00:00.000Z	30 \| good	0.669 \| good	2.092 \| good	31.787 \| good	0.375 \| good	1.636 \| good	0.124 \| good
2026-04-20T22:00:00.000Z	27 \| good	0.212 \| good	0.167 \| good	29.164 \| good	0.377 \| good	1.805 \| good	0.124 \| good
2026-04-20T23:00:00.000Z	26 \| good	1.615 \| good	7.035 \| good	27.81 \| good	0.38 \| good	1.974 \| good	0.124 \| good
2026-04-21T00:00:00.000Z	36 \| good	5.269 \| good	8.409 \| good	39.216 \| good	0.38 \| good	2.125 \| good	0.124 \| good
2026-04-21T01:00:00.000Z	32 \| good	2.694 \| good	11.076 \| good	35.184 \| good	0.442 \| good	3.159 \| good	0.128 \| good
2026-04-21T02:00:00.000Z	31 \| good	1.014 \| good	4.182 \| good	34.352 \| good	0.502 \| good	4.175 \| good	0.133 \| good

Menlo Park

Get reliable air quality data to drive your business

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

0.31ppm

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 12:00:00 on 2026-04-19.

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 03:00:00 on 2026-04-18.

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

As of now, the AQI in Menlo Park, California is 45, 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 1.846 μg/m³.

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

The PM₁₀ concentration in Menlo Park, California is 7.489 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 0.297 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 0.639 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 48.819 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 3.963 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-17T03:00:00.000Z	33 \| good	2.086 \| good	8.041 \| good	36.116 \| good	0.617 \| good	6.687 \| good	0.169 \| good
2026-04-17T04:00:00.000Z	34 \| good	4.996 \| good	21.709 \| good	36.793 \| good	0.363 \| good	5.736 \| good	0.296 \| good
2026-04-17T05:00:00.000Z	32 \| good	4.467 \| good	20.062 \| good	34.995 \| good	0.362 \| good	6.182 \| good	0.297 \| good
2026-04-17T06:00:00.000Z	31 \| good	4.449 \| good	19.671 \| good	34.059 \| good	0.414 \| good	6.143 \| good	0.295 \| good
2026-04-17T07:00:00.000Z	31 \| good	3.759 \| good	16.4 \| good	33.68 \| good	0.448 \| good	6.408 \| good	0.299 \| good
2026-04-17T08:00:00.000Z	30 \| good	3.515 \| good	15.4 \| good	32.478 \| good	0.39 \| good	8.791 \| good	0.298 \| good
2026-04-17T09:00:00.000Z	31 \| good	2.974 \| good	12.351 \| good	33.341 \| good	0.365 \| good	6.803 \| good	0.296 \| good
2026-04-17T10:00:00.000Z	31 \| good	2.085 \| good	8.917 \| good	34.483 \| good	0.397 \| good	6.485 \| good	0.293 \| good
2026-04-17T11:00:00.000Z	32 \| good	1.679 \| good	7.11 \| good	34.551 \| good	0.396 \| good	6.585 \| good	0.293 \| good
2026-04-17T12:00:00.000Z	29 \| good	0.606 \| good	2.425 \| good	30.957 \| good	0.396 \| good	6.558 \| good	0.293 \| good
2026-04-17T13:00:00.000Z	29 \| good	0.53 \| good	2.669 \| good	31.012 \| good	0.426 \| good	6.679 \| good	0.3 \| good
2026-04-17T14:00:00.000Z	25 \| good	2.089 \| good	8.524 \| good	26.777 \| good	0.41 \| good	14.204 \| good	0.391 \| good
2026-04-17T15:00:00.000Z	22 \| good	3.939 \| good	17.713 \| good	21.977 \| good	0.438 \| good	19.598 \| good	0.574 \| good
2026-04-17T16:00:00.000Z	19 \| good	3.391 \| good	15.632 \| good	20.107 \| good	0.524 \| good	8.848 \| good	0.4 \| good
2026-04-17T17:00:00.000Z	32 \| good	3.983 \| good	18 \| good	35.005 \| good	0.766 \| good	5.232 \| good	0.297 \| good
2026-04-17T18:00:00.000Z	22 \| good	3.938 \| good	17.334 \| good	14.234 \| good	0.741 \| good	3.054 \| good	0.199 \| good
2026-04-17T19:00:00.000Z	11 \| good	2.475 \| good	10.045 \| good	7.75 \| good	0.566 \| good	4.423 \| good	0.198 \| good
2026-04-17T20:00:00.000Z	7 \| good	0.409 \| good	1.892 \| good	7.809 \| good	0.443 \| good	3.763 \| good	0.202 \| good
2026-04-17T21:00:00.000Z	11 \| good	1.802 \| good	8.738 \| good	7.989 \| good	0.541 \| good	2.834 \| good	0.202 \| good
2026-04-17T22:00:00.000Z	11 \| good	1.71 \| good	11.358 \| good	8.185 \| good	0.608 \| good	2.806 \| good	0.199 \| good
2026-04-17T23:00:00.000Z	7 \| good	0.462 \| good	2.227 \| good	8.292 \| good	0.907 \| good	3.527 \| good	0.2 \| good
2026-04-18T00:00:00.000Z	7 \| good	0.386 \| good	1.823 \| good	8.272 \| good	0.688 \| good	3.874 \| good	0.293 \| good
2026-04-18T01:00:00.000Z	7 \| good	1.211 \| good	5.517 \| good	8.314 \| good	1.824 \| good	3.426 \| good	0.294 \| good
2026-04-18T02:00:00.000Z	7 \| good	1.063 \| good	4.247 \| good	8.181 \| good	0.928 \| good	3.446 \| good	0.293 \| good
2026-04-18T03:00:00.000Z	7 \| good	1.162 \| good	4.7 \| good	8.097 \| good	0.601 \| good	4.256 \| good	0.296 \| good
2026-04-18T04:00:00.000Z	16 \| good	2.543 \| good	10.263 \| good	7.86 \| good	0.56 \| good	5.512 \| good	0.298 \| good
2026-04-18T05:00:00.000Z	16 \| good	3.283 \| good	14.436 \| good	7.713 \| good	0.497 \| good	5.645 \| good	0.298 \| good
2026-04-18T06:00:00.000Z	16 \| good	3.401 \| good	14.956 \| good	7.382 \| good	0.48 \| good	5.707 \| good	0.299 \| good
2026-04-18T07:00:00.000Z	16 \| good	2.835 \| good	12.004 \| good	7.028 \| good	0.472 \| good	7.122 \| good	0.299 \| good
2026-04-18T08:00:00.000Z	16 \| good	2.538 \| good	10.915 \| good	6.839 \| good	0.489 \| good	5.976 \| good	0.299 \| good
2026-04-18T09:00:00.000Z	16 \| good	2.548 \| good	11.183 \| good	6.839 \| good	0.49 \| good	5.852 \| good	0.299 \| good
2026-04-18T10:00:00.000Z	16 \| good	2.524 \| good	10.977 \| good	6.839 \| good	0.541 \| good	6.617 \| good	0.202 \| good
2026-04-18T11:00:00.000Z	16 \| good	2.692 \| good	17.201 \| good	6.839 \| good	0.524 \| good	6.901 \| good	0.176 \| good
2026-04-18T12:00:00.000Z	31 \| good	4.004 \| good	18.542 \| good	32.711 \| good	0.252 \| good	5.903 \| good	0.398 \| good
2026-04-18T13:00:00.000Z	16 \| good	3.049 \| good	13.147 \| good	16.295 \| good	0.645 \| good	6.436 \| good	0.302 \| good
2026-04-18T14:00:00.000Z	22 \| good	3.616 \| good	15.518 \| good	18.212 \| good	0.491 \| good	11.886 \| good	0.395 \| good
2026-04-18T15:00:00.000Z	20 \| good	3.315 \| good	14.449 \| good	21.517 \| good	0.47 \| good	14.022 \| good	0.49 \| good
2026-04-18T16:00:00.000Z	14 \| good	2.394 \| good	10.512 \| good	15.455 \| good	0.565 \| good	9.454 \| good	0.404 \| good
2026-04-18T17:00:00.000Z	27 \| good	5.003 \| good	22.006 \| good	21.9 \| good	0.655 \| good	10.886 \| good	0.402 \| good
2026-04-18T18:00:00.000Z	33 \| good	6.341 \| good	28.193 \| good	25.406 \| good	0.71 \| good	8.822 \| good	0.395 \| good
2026-04-18T19:00:00.000Z	33 \| good	6.239 \| good	27.993 \| good	28.093 \| good	0.761 \| good	6.817 \| good	0.304 \| good
2026-04-18T20:00:00.000Z	38 \| good	6.666 \| good	30.18 \| good	33.609 \| good	0.793 \| good	6.33 \| good	0.302 \| good
2026-04-18T21:00:00.000Z	38 \| good	5.517 \| good	23.776 \| good	40.544 \| good	0.784 \| good	4.628 \| good	0.302 \| good
2026-04-18T22:00:00.000Z	39 \| good	3.511 \| good	15.621 \| good	41.97 \| good	0.962 \| good	4.083 \| good	0.297 \| good
2026-04-18T23:00:00.000Z	34 \| good	2.888 \| good	12.088 \| good	37.099 \| good	0.636 \| good	4.383 \| good	0.299 \| good
2026-04-19T00:00:00.000Z	44 \| good	2.485 \| good	10.101 \| good	47.394 \| good	0.626 \| good	4.166 \| good	0.299 \| good
2026-04-19T01:00:00.000Z	43 \| good	1.473 \| good	6.49 \| good	45.784 \| good	0.978 \| good	2.545 \| good	0.298 \| good
2026-04-19T02:00:00.000Z	45 \| good	1.846 \| good	7.489 \| good	48.819 \| good	0.639 \| good	3.963 \| good	0.297 \| good
2026-04-19T02:00:00.000Z	45 \| good	1.846 \| good	7.489 \| good	48.819 \| good	0.639 \| good	3.963 \| good	0.297 \| good
2026-04-19T03:00:00.000Z	33 \| good	6.089 \| good	26.85 \| good	32.917 \| good	1.772 \| good	15.292 \| good	0.207 \| good
2026-04-19T04:00:00.000Z	33 \| good	6.369 \| good	28.809 \| good	29.06 \| good	1.799 \| good	17.535 \| good	0.234 \| good
2026-04-19T05:00:00.000Z	33 \| good	5.718 \| good	24.907 \| good	22.48 \| good	1.826 \| good	19.778 \| good	0.26 \| good
2026-04-19T06:00:00.000Z	27 \| good	5.415 \| good	22.945 \| good	18.977 \| good	1.854 \| good	22.021 \| good	0.286 \| good
2026-04-19T07:00:00.000Z	27 \| good	4.606 \| good	19.902 \| good	21.263 \| good	1.726 \| good	21.371 \| good	0.281 \| good
2026-04-19T08:00:00.000Z	22 \| good	4.279 \| good	18.876 \| good	23.067 \| good	1.597 \| good	20.72 \| good	0.275 \| good
2026-04-19T09:00:00.000Z	24 \| good	2.862 \| good	12.038 \| good	25.77 \| good	1.469 \| good	20.07 \| good	0.27 \| good
2026-04-19T10:00:00.000Z	23 \| good	3.105 \| good	13.982 \| good	25.266 \| good	1.409 \| good	19.398 \| good	0.264 \| good
2026-04-19T11:00:00.000Z	22 \| good	3.716 \| good	15.988 \| good	23.322 \| good	1.349 \| good	18.726 \| good	0.259 \| good
2026-04-19T12:00:00.000Z	27 \| good	1.373 \| good	5.214 \| good	29.235 \| good	1.288 \| good	18.053 \| good	0.253 \| good
2026-04-19T13:00:00.000Z	27 \| good	4.566 \| good	20.033 \| good	15.263 \| good	1.374 \| good	16.603 \| good	0.247 \| good
2026-04-19T14:00:00.000Z	38 \| good	7.199 \| good	31.844 \| good	12.898 \| good	1.459 \| good	15.153 \| good	0.24 \| good
2026-04-19T15:00:00.000Z	33 \| good	6.161 \| good	26.963 \| good	26.067 \| good	1.545 \| good	13.704 \| good	0.233 \| good
2026-04-19T16:00:00.000Z	33 \| good	5.594 \| good	24.003 \| good	27.594 \| good	1.513 \| good	10.412 \| good	0.204 \| good
2026-04-19T17:00:00.000Z	29 \| good	5.304 \| good	23.025 \| good	30.537 \| good	1.482 \| good	7.12 \| good	0.175 \| good
2026-04-19T18:00:00.000Z	27 \| good	5.016 \| good	22.018 \| good	28.512 \| good	1.45 \| good	3.827 \| good	0.145 \| good
2026-04-19T19:00:00.000Z	33 \| good	5.671 \| good	23.999 \| good	33.753 \| good	1.283 \| good	3.101 \| good	0.139 \| good
2026-04-19T20:00:00.000Z	31 \| good	3.008 \| good	12.117 \| good	34.118 \| good	1.115 \| good	2.374 \| good	0.133 \| good
2026-04-19T21:00:00.000Z	32 \| good	3.605 \| good	15.957 \| good	34.895 \| good	0.948 \| good	1.648 \| good	0.127 \| good
2026-04-19T22:00:00.000Z	30 \| good	1.923 \| good	8.054 \| good	31.59 \| good	0.877 \| good	1.657 \| good	0.127 \| good
2026-04-19T23:00:00.000Z	28 \| good	1.122 \| good	5.051 \| good	30.433 \| good	0.806 \| good	1.666 \| good	0.126 \| good
2026-04-20T00:00:00.000Z	31 \| good	2.48 \| good	10.006 \| good	33.48 \| good	0.735 \| good	1.675 \| good	0.126 \| good
2026-04-20T01:00:00.000Z	30 \| good	1.382 \| good	5.123 \| good	31.871 \| good	0.756 \| good	2.941 \| good	0.133 \| good
2026-04-20T02:00:00.000Z	30 \| good	2.72 \| good	11.135 \| good	32.106 \| good	0.777 \| good	4.208 \| good	0.14 \| good
2026-04-20T03:00:00.000Z	27 \| good	4.724 \| good	20.864 \| good	24.783 \| good	0.798 \| good	5.475 \| good	0.148 \| good
2026-04-20T04:00:00.000Z	33 \| good	5.509 \| good	23.897 \| good	18.831 \| good	0.852 \| good	6.71 \| good	0.154 \| good
2026-04-20T05:00:00.000Z	22 \| good	4.442 \| good	18.941 \| good	20.431 \| good	0.906 \| good	7.944 \| good	0.161 \| good
2026-04-20T06:00:00.000Z	27 \| good	4.732 \| good	20.893 \| good	20.399 \| good	0.96 \| good	9.178 \| good	0.167 \| good
2026-04-20T07:00:00.000Z	22 \| good	4.459 \| good	18.959 \| good	22.456 \| good	0.919 \| good	9.114 \| good	0.168 \| good
2026-04-20T08:00:00.000Z	25 \| good	4.153 \| good	17.966 \| good	26.896 \| good	0.878 \| good	9.05 \| good	0.169 \| good
2026-04-20T09:00:00.000Z	28 \| good	2.447 \| good	10.034 \| good	30.054 \| good	0.837 \| good	8.985 \| good	0.17 \| good
2026-04-20T10:00:00.000Z	31 \| good	2.956 \| good	12.013 \| good	32.524 \| good	0.799 \| good	7.726 \| good	0.163 \| good
2026-04-20T11:00:00.000Z	28 \| good	3.412 \| good	14.977 \| good	30.097 \| good	0.761 \| good	6.467 \| good	0.155 \| good
2026-04-20T12:00:00.000Z	21 \| good	2.422 \| good	10.053 \| good	22.564 \| good	0.724 \| good	5.208 \| good	0.148 \| good
2026-04-20T13:00:00.000Z	16 \| good	1.264 \| good	5.095 \| good	17.256 \| good	0.713 \| good	5.11 \| good	0.148 \| good
2026-04-20T14:00:00.000Z	27 \| good	4.576 \| good	19.878 \| good	13.436 \| good	0.702 \| good	5.012 \| good	0.148 \| good
2026-04-20T15:00:00.000Z	27 \| good	4.74 \| good	20.893 \| good	24.71 \| good	0.691 \| good	4.914 \| good	0.148 \| good
2026-04-20T16:00:00.000Z	22 \| good	4.048 \| good	17.967 \| good	24.184 \| good	0.657 \| good	4.403 \| good	0.145 \| good
2026-04-20T17:00:00.000Z	26 \| good	1.827 \| good	7.155 \| good	28.483 \| good	0.623 \| good	3.892 \| good	0.141 \| good
2026-04-20T18:00:00.000Z	26 \| good	0.871 \| good	3.219 \| good	27.732 \| good	0.59 \| good	3.381 \| good	0.137 \| good
2026-04-20T19:00:00.000Z	26 \| good	1.81 \| good	7.098 \| good	28.485 \| good	0.518 \| good	2.799 \| good	0.133 \| good
2026-04-20T20:00:00.000Z	31 \| good	0.408 \| good	1.177 \| good	34.192 \| good	0.446 \| good	2.217 \| good	0.129 \| good
2026-04-20T21:00:00.000Z	30 \| good	0.669 \| good	2.092 \| good	31.787 \| good	0.375 \| good	1.636 \| good	0.124 \| good
2026-04-20T22:00:00.000Z	27 \| good	0.212 \| good	0.167 \| good	29.164 \| good	0.377 \| good	1.805 \| good	0.124 \| good
2026-04-20T23:00:00.000Z	26 \| good	1.615 \| good	7.035 \| good	27.81 \| good	0.38 \| good	1.974 \| good	0.124 \| good
2026-04-21T00:00:00.000Z	36 \| good	5.269 \| good	8.409 \| good	39.216 \| good	0.38 \| good	2.125 \| good	0.124 \| good
2026-04-21T01:00:00.000Z	32 \| good	2.694 \| good	11.076 \| good	35.184 \| good	0.442 \| good	3.159 \| good	0.128 \| good
2026-04-21T02:00:00.000Z	31 \| good	1.014 \| good	4.182 \| good	34.352 \| good	0.502 \| good	4.175 \| good	0.133 \| 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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Air quality in nearby cities

North Fair Oaks, California

Stanford, California

Palo Alto, California

East Palo Alto, California

Redwood City, California

San Carlos, California

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Frequently asked questions

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

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

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

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

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

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?

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

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

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?