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 0.886 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 29.947 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 4.063 ppb.

Real-time air quality index in Menlo Park, California today

Name: Live air pollution levels in Menlo Park, California today
Creator: Ambee

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)

4.89 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

21.86 μg/m³

155

255

425

605+

Ozone (O₃)

29.95 ppb

201

201+

Sulfur Dioxide (SO₂)

0.89 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.06 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 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
2025-06-04T08:00:00.000Z	54 \| moderate	11.085 \| good	48.718 \| good	25.259 \| good	0.85 \| good	4.271 \| good	0.277 \| good
2025-06-04T09:00:00.000Z	56 \| moderate	12.148 \| fine	54.753 \| good	24.681 \| good	0.851 \| good	3.128 \| good	0.239 \| good
2025-06-04T10:00:00.000Z	58 \| moderate	12.751 \| fine	57.124 \| fine	24.422 \| good	0.826 \| good	3.869 \| good	0.238 \| good
2025-06-04T11:00:00.000Z	56 \| moderate	12.024 \| good	54.307 \| good	26.491 \| good	0.81 \| good	4.843 \| good	0.237 \| good
2025-06-04T12:00:00.000Z	52 \| moderate	9.694 \| good	43.145 \| good	26.655 \| good	0.807 \| good	5.107 \| good	0.237 \| good
2025-06-04T13:00:00.000Z	49 \| good	9.127 \| good	40.858 \| good	13.249 \| good	0.779 \| good	2.956 \| good	0.115 \| good
2025-06-04T14:00:00.000Z	54 \| moderate	10.528 \| good	46.845 \| good	19.977 \| good	0.869 \| good	7.245 \| good	0.275 \| good
2025-06-04T15:00:00.000Z	60 \| moderate	13.537 \| fine	60.292 \| fine	24.744 \| good	0.915 \| good	8.577 \| good	0.296 \| good
2025-06-04T16:00:00.000Z	66 \| moderate	17.082 \| fine	75.931 \| fine	26.505 \| good	0.954 \| good	9.12 \| good	0.317 \| good
2025-06-04T17:00:00.000Z	66 \| moderate	17.438 \| fine	77.702 \| fine	29.378 \| good	0.871 \| good	6.335 \| good	0.322 \| good
2025-06-04T18:00:00.000Z	64 \| moderate	16.225 \| fine	72.228 \| fine	28.171 \| good	1.175 \| good	5.3 \| good	0.299 \| good
2025-06-04T19:00:00.000Z	64 \| moderate	16.472 \| fine	72.209 \| fine	29.447 \| good	1.751 \| good	5.854 \| good	0.283 \| good
2025-06-04T20:00:00.000Z	66 \| moderate	17.193 \| fine	76.139 \| fine	32.839 \| good	1.209 \| good	4.672 \| good	0.259 \| good
2025-06-04T21:00:00.000Z	64 \| moderate	15.735 \| fine	68.371 \| fine	33.636 \| good	1.105 \| good	4.358 \| good	0.294 \| good
2025-06-04T22:00:00.000Z	62 \| moderate	15.117 \| fine	68.208 \| fine	33.939 \| good	0.998 \| good	5.769 \| good	0.318 \| good
2025-06-04T23:00:00.000Z	66 \| moderate	16.515 \| fine	73.484 \| fine	35.126 \| good	0.886 \| good	5.525 \| good	0.3 \| good
2025-06-05T00:00:00.000Z	62 \| moderate	15.059 \| fine	67.294 \| fine	35.217 \| good	0.86 \| good	4.639 \| good	0.316 \| good
2025-06-05T01:00:00.000Z	60 \| moderate	14.358 \| fine	63.467 \| fine	33.544 \| good	0.852 \| good	5.813 \| good	0.3 \| good
2025-06-05T02:00:00.000Z	56 \| moderate	11.676 \| good	51.917 \| good	33.102 \| good	0.961 \| good	6.2 \| good	0.277 \| good
2025-06-05T03:00:00.000Z	54 \| moderate	10.914 \| good	48.769 \| good	33.426 \| good	0.887 \| good	5.24 \| good	0.277 \| good
2025-06-05T04:00:00.000Z	54 \| moderate	10.788 \| good	48.085 \| good	33.119 \| good	0.803 \| good	6.049 \| good	0.277 \| good
2025-06-05T05:00:00.000Z	54 \| moderate	10.887 \| good	47.82 \| good	31.222 \| good	0.78 \| good	6.807 \| good	0.278 \| good
2025-06-05T06:00:00.000Z	54 \| moderate	10.867 \| good	48.039 \| good	30.366 \| good	0.745 \| good	3.55 \| good	0.256 \| good
2025-06-05T07:00:00.000Z	49 \| good	9.467 \| good	42.905 \| good	29.778 \| good	0.767 \| good	3.494 \| good	0.256 \| good
2025-06-05T08:00:00.000Z	49 \| good	8.768 \| good	38.301 \| good	28.258 \| good	0.775 \| good	3.303 \| good	0.254 \| good
2025-06-05T09:00:00.000Z	44 \| good	8.318 \| good	36.992 \| good	27.861 \| good	0.86 \| good	2.913 \| good	0.238 \| good
2025-06-05T10:00:00.000Z	52 \| moderate	9.506 \| good	43.01 \| good	27.038 \| good	1.065 \| good	3.452 \| good	0.213 \| good
2025-06-05T11:00:00.000Z	52 \| moderate	9.645 \| good	42.562 \| good	26.86 \| good	1.008 \| good	6.176 \| good	0.213 \| good
2025-06-05T12:00:00.000Z	49 \| good	8.743 \| good	37.776 \| good	25.767 \| good	1.22 \| good	5.968 \| good	0.213 \| good
2025-06-05T13:00:00.000Z	33 \| good	6.051 \| good	26.402 \| good	24.362 \| good	1.641 \| good	5.842 \| good	0.257 \| good
2025-06-05T14:00:00.000Z	25 \| good	3.677 \| good	16.59 \| good	26.958 \| good	1.27 \| good	6.403 \| good	0.27 \| good
2025-06-05T15:00:00.000Z	27 \| good	4.94 \| good	21.441 \| good	25.941 \| good	1.253 \| good	6.87 \| good	0.252 \| good
2025-06-05T16:00:00.000Z	27 \| good	5.204 \| good	22.617 \| good	27.602 \| good	1.265 \| good	6.855 \| good	0.251 \| good
2025-06-05T17:00:00.000Z	27 \| good	5.238 \| good	22.56 \| good	27.75 \| good	1.329 \| good	5.467 \| good	0.273 \| good
2025-06-05T18:00:00.000Z	38 \| good	6.626 \| good	29.938 \| good	28.235 \| good	1.229 \| good	5.811 \| good	0.29 \| good
2025-06-05T19:00:00.000Z	38 \| good	6.633 \| good	29.923 \| good	32.53 \| good	1.116 \| good	4.377 \| good	0.29 \| good
2025-06-05T20:00:00.000Z	52 \| moderate	9.937 \| good	44.243 \| good	31.791 \| good	0.707 \| good	4.06 \| good	0.29 \| good
2025-06-05T21:00:00.000Z	44 \| good	7.775 \| good	34.513 \| good	33.058 \| good	0.974 \| good	4.562 \| good	0.256 \| good
2025-06-05T22:00:00.000Z	32 \| good	5.026 \| good	21.762 \| good	35.316 \| good	0.757 \| good	5.66 \| good	0.276 \| good
2025-06-05T23:00:00.000Z	33 \| good	5.621 \| good	24.457 \| good	34.725 \| good	1.258 \| good	5.178 \| good	0.276 \| good
2025-06-06T00:00:00.000Z	33 \| good	6.325 \| good	27.92 \| good	35.498 \| good	0.941 \| good	3.457 \| good	0.276 \| good
2025-06-06T01:00:00.000Z	33 \| good	6.106 \| good	27.522 \| good	35.06 \| good	0.756 \| good	4.672 \| good	0.276 \| good
2025-06-06T02:00:00.000Z	33 \| good	6.228 \| good	28.076 \| good	33.865 \| good	0.782 \| good	5.049 \| good	0.275 \| good
2025-06-06T03:00:00.000Z	33 \| good	5.725 \| good	24.536 \| good	31.095 \| good	0.917 \| good	4.673 \| good	0.276 \| good
2025-06-06T04:00:00.000Z	28 \| good	4.889 \| good	21.862 \| good	29.947 \| good	0.886 \| good	4.063 \| good	0.276 \| good
2025-06-06T05:00:00.000Z	27 \| good	4.503 \| good	19.879 \| good	23.336 \| good	0.703 \| good	4.218 \| good	0.276 \| good
2025-06-06T06:00:00.000Z	27 \| good	4.74 \| good	20.633 \| good	20.634 \| good	0.563 \| good	4.224 \| good	0.276 \| good
2025-06-06T05:00:00.000Z	28 \| good	4.889 \| good	21.862 \| good	29.947 \| good	0.886 \| good	4.063 \| good	0.276 \| good
2025-06-06T06:00:00.000Z	54 \| moderate	11.409 \| good	50.849 \| good	10.639 \| good	0.724 \| good	5.303 \| good	0.114 \| good
2025-06-06T07:00:00.000Z	58 \| moderate	12.656 \| fine	56.822 \| fine	10.829 \| good	0.485 \| good	3.677 \| good	0.103 \| good
2025-06-06T08:00:00.000Z	56 \| moderate	11.859 \| good	51.937 \| good	10.8 \| good	0.617 \| good	4.732 \| good	0.11 \| good
2025-06-06T09:00:00.000Z	56 \| moderate	12.18 \| fine	54.806 \| good	10.819 \| good	0.75 \| good	5.787 \| good	0.117 \| good
2025-06-06T10:00:00.000Z	52 \| moderate	10.321 \| good	45.959 \| good	14.575 \| good	0.513 \| good	3.225 \| good	0.1 \| good
2025-06-06T11:00:00.000Z	54 \| moderate	10.572 \| good	46.955 \| good	10.783 \| good	0.647 \| good	4.172 \| good	0.106 \| good
2025-06-06T12:00:00.000Z	58 \| moderate	12.63 \| fine	56.751 \| fine	6.986 \| good	0.78 \| good	5.119 \| good	0.112 \| good
2025-06-06T13:00:00.000Z	58 \| moderate	13.279 \| fine	60.702 \| fine	7.919 \| good	0.553 \| good	2.234 \| good	0.097 \| good
2025-06-06T14:00:00.000Z	58 \| moderate	13.469 \| fine	60.835 \| fine	16.065 \| good	0.711 \| good	2.818 \| good	0.102 \| good
2025-06-06T15:00:00.000Z	62 \| moderate	15.136 \| fine	66.877 \| fine	21.626 \| good	0.869 \| good	3.403 \| good	0.106 \| good
2025-06-06T16:00:00.000Z	62 \| moderate	14.833 \| fine	66.834 \| fine	24.919 \| good	0.567 \| good	1.702 \| good	0.101 \| good
2025-06-06T17:00:00.000Z	56 \| moderate	12.221 \| fine	55.088 \| fine	28.747 \| good	0.697 \| good	2.093 \| good	0.106 \| good
2025-06-06T18:00:00.000Z	58 \| moderate	13.227 \| fine	59.066 \| fine	32.88 \| good	0.828 \| good	2.484 \| good	0.111 \| good
2025-06-06T19:00:00.000Z	60 \| moderate	13.552 \| fine	61.065 \| fine	35.925 \| good	0.631 \| good	1.135 \| good	0.098 \| good
2025-06-06T20:00:00.000Z	58 \| moderate	13.244 \| fine	59.12 \| fine	38.218 \| good	0.752 \| good	1.357 \| good	0.103 \| good
2025-06-06T21:00:00.000Z	56 \| moderate	12.295 \| fine	55.108 \| fine	35.794 \| good	0.873 \| good	1.579 \| good	0.107 \| good
2025-06-06T22:00:00.000Z	60 \| moderate	14.094 \| fine	63.01 \| fine	33.812 \| good	0.59 \| good	1.357 \| good	0.098 \| good
2025-06-06T23:00:00.000Z	58 \| moderate	13.247 \| fine	59.099 \| fine	32.831 \| good	0.711 \| good	1.552 \| good	0.102 \| good
2025-06-07T00:00:00.000Z	56 \| moderate	12.221 \| fine	54.954 \| good	34.07 \| good	0.833 \| good	1.747 \| good	0.106 \| good
2025-06-07T01:00:00.000Z	56 \| moderate	11.649 \| good	51.011 \| good	33.449 \| good	0.626 \| good	3.848 \| good	0.106 \| good
2025-06-07T02:00:00.000Z	58 \| moderate	13.075 \| fine	58.917 \| fine	31.56 \| good	0.768 \| good	4.311 \| good	0.11 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	12.109 \| fine	54.89 \| good	28.258 \| good	0.909 \| good	4.775 \| good	0.114 \| good
2025-06-07T04:00:00.000Z	54 \| moderate	11.053 \| good	49.02 \| good	24.732 \| good	0.931 \| good	6.125 \| good	0.112 \| good
2025-06-07T05:00:00.000Z	54 \| moderate	10.921 \| good	48.024 \| good	21.101 \| good	1.085 \| good	7.306 \| good	0.119 \| good
2025-06-07T06:00:00.000Z	52 \| moderate	9.851 \| good	43.997 \| good	20.665 \| good	1.24 \| good	8.488 \| good	0.126 \| good
2025-06-07T07:00:00.000Z	52 \| moderate	10.329 \| good	45.995 \| good	19.266 \| good	1.011 \| good	6.955 \| good	0.116 \| good
2025-06-07T08:00:00.000Z	54 \| moderate	11.36 \| good	49.954 \| good	14.07 \| good	1.178 \| good	8.719 \| good	0.126 \| good
2025-06-07T09:00:00.000Z	56 \| moderate	11.503 \| good	50.906 \| good	11.49 \| good	1.344 \| good	10.483 \| good	0.136 \| good
2025-06-07T10:00:00.000Z	49 \| good	8.832 \| good	39.093 \| good	9.283 \| good	0.928 \| good	6.269 \| good	0.112 \| good
2025-06-07T11:00:00.000Z	44 \| good	8.364 \| good	37.05 \| good	11.806 \| good	1.087 \| good	8.168 \| good	0.123 \| good
2025-06-07T12:00:00.000Z	54 \| moderate	11.457 \| good	50.964 \| good	10.962 \| good	1.245 \| good	10.068 \| good	0.134 \| good
2025-06-07T13:00:00.000Z	54 \| moderate	10.572 \| good	46.967 \| good	13.929 \| good	1.059 \| good	3.432 \| good	0.102 \| good
2025-06-07T14:00:00.000Z	56 \| moderate	11.878 \| good	51.989 \| good	19.347 \| good	1.3 \| good	4.305 \| good	0.108 \| good
2025-06-07T15:00:00.000Z	56 \| moderate	11.967 \| good	53.897 \| good	25.016 \| good	1.541 \| good	5.179 \| good	0.115 \| good
2025-06-07T16:00:00.000Z	56 \| moderate	11.921 \| good	53.888 \| good	26.767 \| good	0.899 \| good	1.942 \| good	0.1 \| good
2025-06-07T17:00:00.000Z	52 \| moderate	10.473 \| good	46.083 \| good	28.744 \| good	1.027 \| good	2.381 \| good	0.105 \| good
2025-06-07T18:00:00.000Z	54 \| moderate	10.856 \| good	47.98 \| good	31.05 \| good	1.155 \| good	2.82 \| good	0.11 \| good
2025-06-07T19:00:00.000Z	56 \| moderate	11.983 \| good	53.926 \| good	34.143 \| good	0.787 \| good	0.967 \| good	0.095 \| good
2025-06-07T20:00:00.000Z	54 \| moderate	11.032 \| good	49.048 \| good	34.832 \| good	0.872 \| good	1.174 \| good	0.099 \| good
2025-06-07T21:00:00.000Z	52 \| moderate	9.653 \| good	43.119 \| good	32.925 \| good	0.957 \| good	1.381 \| good	0.103 \| good
2025-06-07T22:00:00.000Z	56 \| moderate	12.355 \| fine	54.947 \| good	32.557 \| good	0.669 \| good	1.126 \| good	0.096 \| good
2025-06-07T23:00:00.000Z	54 \| moderate	11.339 \| good	50.072 \| good	30.861 \| good	0.746 \| good	1.344 \| good	0.099 \| good
2025-06-08T00:00:00.000Z	52 \| moderate	10.378 \| good	46.046 \| good	31.014 \| good	0.822 \| good	1.562 \| good	0.103 \| good
2025-06-08T01:00:00.000Z	54 \| moderate	10.732 \| good	47.96 \| good	32.018 \| good	0.598 \| good	2.552 \| good	0.1 \| good
2025-06-08T02:00:00.000Z	58 \| moderate	12.591 \| fine	56.91 \| fine	30.022 \| good	0.711 \| good	3.191 \| good	0.105 \| good
2025-06-08T03:00:00.000Z	56 \| moderate	11.835 \| good	51.993 \| good	28.214 \| good	0.824 \| good	3.83 \| good	0.109 \| good
2025-06-08T04:00:00.000Z	54 \| moderate	11.012 \| good	49.015 \| good	25.618 \| good	0.638 \| good	2.933 \| good	0.101 \| good
2025-06-08T05:00:00.000Z	52 \| moderate	10.493 \| good	46.052 \| good	24.435 \| good	0.802 \| good	3.92 \| good	0.106 \| good

Menlo Park

Get reliable air quality data to drive your business

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

0.27ppm

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 06:00:00 on 2025-06-05.

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 02:00:00 on 2025-06-05.

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 4.889 μg/m³.

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

The PM₁₀ concentration in Menlo Park, California is 21.862 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 0.276 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 0.886 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 29.947 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 4.063 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T08:00:00.000Z	54 \| moderate	11.085 \| good	48.718 \| good	25.259 \| good	0.85 \| good	4.271 \| good	0.277 \| good
2025-06-04T09:00:00.000Z	56 \| moderate	12.148 \| fine	54.753 \| good	24.681 \| good	0.851 \| good	3.128 \| good	0.239 \| good
2025-06-04T10:00:00.000Z	58 \| moderate	12.751 \| fine	57.124 \| fine	24.422 \| good	0.826 \| good	3.869 \| good	0.238 \| good
2025-06-04T11:00:00.000Z	56 \| moderate	12.024 \| good	54.307 \| good	26.491 \| good	0.81 \| good	4.843 \| good	0.237 \| good
2025-06-04T12:00:00.000Z	52 \| moderate	9.694 \| good	43.145 \| good	26.655 \| good	0.807 \| good	5.107 \| good	0.237 \| good
2025-06-04T13:00:00.000Z	49 \| good	9.127 \| good	40.858 \| good	13.249 \| good	0.779 \| good	2.956 \| good	0.115 \| good
2025-06-04T14:00:00.000Z	54 \| moderate	10.528 \| good	46.845 \| good	19.977 \| good	0.869 \| good	7.245 \| good	0.275 \| good
2025-06-04T15:00:00.000Z	60 \| moderate	13.537 \| fine	60.292 \| fine	24.744 \| good	0.915 \| good	8.577 \| good	0.296 \| good
2025-06-04T16:00:00.000Z	66 \| moderate	17.082 \| fine	75.931 \| fine	26.505 \| good	0.954 \| good	9.12 \| good	0.317 \| good
2025-06-04T17:00:00.000Z	66 \| moderate	17.438 \| fine	77.702 \| fine	29.378 \| good	0.871 \| good	6.335 \| good	0.322 \| good
2025-06-04T18:00:00.000Z	64 \| moderate	16.225 \| fine	72.228 \| fine	28.171 \| good	1.175 \| good	5.3 \| good	0.299 \| good
2025-06-04T19:00:00.000Z	64 \| moderate	16.472 \| fine	72.209 \| fine	29.447 \| good	1.751 \| good	5.854 \| good	0.283 \| good
2025-06-04T20:00:00.000Z	66 \| moderate	17.193 \| fine	76.139 \| fine	32.839 \| good	1.209 \| good	4.672 \| good	0.259 \| good
2025-06-04T21:00:00.000Z	64 \| moderate	15.735 \| fine	68.371 \| fine	33.636 \| good	1.105 \| good	4.358 \| good	0.294 \| good
2025-06-04T22:00:00.000Z	62 \| moderate	15.117 \| fine	68.208 \| fine	33.939 \| good	0.998 \| good	5.769 \| good	0.318 \| good
2025-06-04T23:00:00.000Z	66 \| moderate	16.515 \| fine	73.484 \| fine	35.126 \| good	0.886 \| good	5.525 \| good	0.3 \| good
2025-06-05T00:00:00.000Z	62 \| moderate	15.059 \| fine	67.294 \| fine	35.217 \| good	0.86 \| good	4.639 \| good	0.316 \| good
2025-06-05T01:00:00.000Z	60 \| moderate	14.358 \| fine	63.467 \| fine	33.544 \| good	0.852 \| good	5.813 \| good	0.3 \| good
2025-06-05T02:00:00.000Z	56 \| moderate	11.676 \| good	51.917 \| good	33.102 \| good	0.961 \| good	6.2 \| good	0.277 \| good
2025-06-05T03:00:00.000Z	54 \| moderate	10.914 \| good	48.769 \| good	33.426 \| good	0.887 \| good	5.24 \| good	0.277 \| good
2025-06-05T04:00:00.000Z	54 \| moderate	10.788 \| good	48.085 \| good	33.119 \| good	0.803 \| good	6.049 \| good	0.277 \| good
2025-06-05T05:00:00.000Z	54 \| moderate	10.887 \| good	47.82 \| good	31.222 \| good	0.78 \| good	6.807 \| good	0.278 \| good
2025-06-05T06:00:00.000Z	54 \| moderate	10.867 \| good	48.039 \| good	30.366 \| good	0.745 \| good	3.55 \| good	0.256 \| good
2025-06-05T07:00:00.000Z	49 \| good	9.467 \| good	42.905 \| good	29.778 \| good	0.767 \| good	3.494 \| good	0.256 \| good
2025-06-05T08:00:00.000Z	49 \| good	8.768 \| good	38.301 \| good	28.258 \| good	0.775 \| good	3.303 \| good	0.254 \| good
2025-06-05T09:00:00.000Z	44 \| good	8.318 \| good	36.992 \| good	27.861 \| good	0.86 \| good	2.913 \| good	0.238 \| good
2025-06-05T10:00:00.000Z	52 \| moderate	9.506 \| good	43.01 \| good	27.038 \| good	1.065 \| good	3.452 \| good	0.213 \| good
2025-06-05T11:00:00.000Z	52 \| moderate	9.645 \| good	42.562 \| good	26.86 \| good	1.008 \| good	6.176 \| good	0.213 \| good
2025-06-05T12:00:00.000Z	49 \| good	8.743 \| good	37.776 \| good	25.767 \| good	1.22 \| good	5.968 \| good	0.213 \| good
2025-06-05T13:00:00.000Z	33 \| good	6.051 \| good	26.402 \| good	24.362 \| good	1.641 \| good	5.842 \| good	0.257 \| good
2025-06-05T14:00:00.000Z	25 \| good	3.677 \| good	16.59 \| good	26.958 \| good	1.27 \| good	6.403 \| good	0.27 \| good
2025-06-05T15:00:00.000Z	27 \| good	4.94 \| good	21.441 \| good	25.941 \| good	1.253 \| good	6.87 \| good	0.252 \| good
2025-06-05T16:00:00.000Z	27 \| good	5.204 \| good	22.617 \| good	27.602 \| good	1.265 \| good	6.855 \| good	0.251 \| good
2025-06-05T17:00:00.000Z	27 \| good	5.238 \| good	22.56 \| good	27.75 \| good	1.329 \| good	5.467 \| good	0.273 \| good
2025-06-05T18:00:00.000Z	38 \| good	6.626 \| good	29.938 \| good	28.235 \| good	1.229 \| good	5.811 \| good	0.29 \| good
2025-06-05T19:00:00.000Z	38 \| good	6.633 \| good	29.923 \| good	32.53 \| good	1.116 \| good	4.377 \| good	0.29 \| good
2025-06-05T20:00:00.000Z	52 \| moderate	9.937 \| good	44.243 \| good	31.791 \| good	0.707 \| good	4.06 \| good	0.29 \| good
2025-06-05T21:00:00.000Z	44 \| good	7.775 \| good	34.513 \| good	33.058 \| good	0.974 \| good	4.562 \| good	0.256 \| good
2025-06-05T22:00:00.000Z	32 \| good	5.026 \| good	21.762 \| good	35.316 \| good	0.757 \| good	5.66 \| good	0.276 \| good
2025-06-05T23:00:00.000Z	33 \| good	5.621 \| good	24.457 \| good	34.725 \| good	1.258 \| good	5.178 \| good	0.276 \| good
2025-06-06T00:00:00.000Z	33 \| good	6.325 \| good	27.92 \| good	35.498 \| good	0.941 \| good	3.457 \| good	0.276 \| good
2025-06-06T01:00:00.000Z	33 \| good	6.106 \| good	27.522 \| good	35.06 \| good	0.756 \| good	4.672 \| good	0.276 \| good
2025-06-06T02:00:00.000Z	33 \| good	6.228 \| good	28.076 \| good	33.865 \| good	0.782 \| good	5.049 \| good	0.275 \| good
2025-06-06T03:00:00.000Z	33 \| good	5.725 \| good	24.536 \| good	31.095 \| good	0.917 \| good	4.673 \| good	0.276 \| good
2025-06-06T04:00:00.000Z	28 \| good	4.889 \| good	21.862 \| good	29.947 \| good	0.886 \| good	4.063 \| good	0.276 \| good
2025-06-06T05:00:00.000Z	27 \| good	4.503 \| good	19.879 \| good	23.336 \| good	0.703 \| good	4.218 \| good	0.276 \| good
2025-06-06T06:00:00.000Z	27 \| good	4.74 \| good	20.633 \| good	20.634 \| good	0.563 \| good	4.224 \| good	0.276 \| good
2025-06-06T05:00:00.000Z	28 \| good	4.889 \| good	21.862 \| good	29.947 \| good	0.886 \| good	4.063 \| good	0.276 \| good
2025-06-06T06:00:00.000Z	54 \| moderate	11.409 \| good	50.849 \| good	10.639 \| good	0.724 \| good	5.303 \| good	0.114 \| good
2025-06-06T07:00:00.000Z	58 \| moderate	12.656 \| fine	56.822 \| fine	10.829 \| good	0.485 \| good	3.677 \| good	0.103 \| good
2025-06-06T08:00:00.000Z	56 \| moderate	11.859 \| good	51.937 \| good	10.8 \| good	0.617 \| good	4.732 \| good	0.11 \| good
2025-06-06T09:00:00.000Z	56 \| moderate	12.18 \| fine	54.806 \| good	10.819 \| good	0.75 \| good	5.787 \| good	0.117 \| good
2025-06-06T10:00:00.000Z	52 \| moderate	10.321 \| good	45.959 \| good	14.575 \| good	0.513 \| good	3.225 \| good	0.1 \| good
2025-06-06T11:00:00.000Z	54 \| moderate	10.572 \| good	46.955 \| good	10.783 \| good	0.647 \| good	4.172 \| good	0.106 \| good
2025-06-06T12:00:00.000Z	58 \| moderate	12.63 \| fine	56.751 \| fine	6.986 \| good	0.78 \| good	5.119 \| good	0.112 \| good
2025-06-06T13:00:00.000Z	58 \| moderate	13.279 \| fine	60.702 \| fine	7.919 \| good	0.553 \| good	2.234 \| good	0.097 \| good
2025-06-06T14:00:00.000Z	58 \| moderate	13.469 \| fine	60.835 \| fine	16.065 \| good	0.711 \| good	2.818 \| good	0.102 \| good
2025-06-06T15:00:00.000Z	62 \| moderate	15.136 \| fine	66.877 \| fine	21.626 \| good	0.869 \| good	3.403 \| good	0.106 \| good
2025-06-06T16:00:00.000Z	62 \| moderate	14.833 \| fine	66.834 \| fine	24.919 \| good	0.567 \| good	1.702 \| good	0.101 \| good
2025-06-06T17:00:00.000Z	56 \| moderate	12.221 \| fine	55.088 \| fine	28.747 \| good	0.697 \| good	2.093 \| good	0.106 \| good
2025-06-06T18:00:00.000Z	58 \| moderate	13.227 \| fine	59.066 \| fine	32.88 \| good	0.828 \| good	2.484 \| good	0.111 \| good
2025-06-06T19:00:00.000Z	60 \| moderate	13.552 \| fine	61.065 \| fine	35.925 \| good	0.631 \| good	1.135 \| good	0.098 \| good
2025-06-06T20:00:00.000Z	58 \| moderate	13.244 \| fine	59.12 \| fine	38.218 \| good	0.752 \| good	1.357 \| good	0.103 \| good
2025-06-06T21:00:00.000Z	56 \| moderate	12.295 \| fine	55.108 \| fine	35.794 \| good	0.873 \| good	1.579 \| good	0.107 \| good
2025-06-06T22:00:00.000Z	60 \| moderate	14.094 \| fine	63.01 \| fine	33.812 \| good	0.59 \| good	1.357 \| good	0.098 \| good
2025-06-06T23:00:00.000Z	58 \| moderate	13.247 \| fine	59.099 \| fine	32.831 \| good	0.711 \| good	1.552 \| good	0.102 \| good
2025-06-07T00:00:00.000Z	56 \| moderate	12.221 \| fine	54.954 \| good	34.07 \| good	0.833 \| good	1.747 \| good	0.106 \| good
2025-06-07T01:00:00.000Z	56 \| moderate	11.649 \| good	51.011 \| good	33.449 \| good	0.626 \| good	3.848 \| good	0.106 \| good
2025-06-07T02:00:00.000Z	58 \| moderate	13.075 \| fine	58.917 \| fine	31.56 \| good	0.768 \| good	4.311 \| good	0.11 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	12.109 \| fine	54.89 \| good	28.258 \| good	0.909 \| good	4.775 \| good	0.114 \| good
2025-06-07T04:00:00.000Z	54 \| moderate	11.053 \| good	49.02 \| good	24.732 \| good	0.931 \| good	6.125 \| good	0.112 \| good
2025-06-07T05:00:00.000Z	54 \| moderate	10.921 \| good	48.024 \| good	21.101 \| good	1.085 \| good	7.306 \| good	0.119 \| good
2025-06-07T06:00:00.000Z	52 \| moderate	9.851 \| good	43.997 \| good	20.665 \| good	1.24 \| good	8.488 \| good	0.126 \| good
2025-06-07T07:00:00.000Z	52 \| moderate	10.329 \| good	45.995 \| good	19.266 \| good	1.011 \| good	6.955 \| good	0.116 \| good
2025-06-07T08:00:00.000Z	54 \| moderate	11.36 \| good	49.954 \| good	14.07 \| good	1.178 \| good	8.719 \| good	0.126 \| good
2025-06-07T09:00:00.000Z	56 \| moderate	11.503 \| good	50.906 \| good	11.49 \| good	1.344 \| good	10.483 \| good	0.136 \| good
2025-06-07T10:00:00.000Z	49 \| good	8.832 \| good	39.093 \| good	9.283 \| good	0.928 \| good	6.269 \| good	0.112 \| good
2025-06-07T11:00:00.000Z	44 \| good	8.364 \| good	37.05 \| good	11.806 \| good	1.087 \| good	8.168 \| good	0.123 \| good
2025-06-07T12:00:00.000Z	54 \| moderate	11.457 \| good	50.964 \| good	10.962 \| good	1.245 \| good	10.068 \| good	0.134 \| good
2025-06-07T13:00:00.000Z	54 \| moderate	10.572 \| good	46.967 \| good	13.929 \| good	1.059 \| good	3.432 \| good	0.102 \| good
2025-06-07T14:00:00.000Z	56 \| moderate	11.878 \| good	51.989 \| good	19.347 \| good	1.3 \| good	4.305 \| good	0.108 \| good
2025-06-07T15:00:00.000Z	56 \| moderate	11.967 \| good	53.897 \| good	25.016 \| good	1.541 \| good	5.179 \| good	0.115 \| good
2025-06-07T16:00:00.000Z	56 \| moderate	11.921 \| good	53.888 \| good	26.767 \| good	0.899 \| good	1.942 \| good	0.1 \| good
2025-06-07T17:00:00.000Z	52 \| moderate	10.473 \| good	46.083 \| good	28.744 \| good	1.027 \| good	2.381 \| good	0.105 \| good
2025-06-07T18:00:00.000Z	54 \| moderate	10.856 \| good	47.98 \| good	31.05 \| good	1.155 \| good	2.82 \| good	0.11 \| good
2025-06-07T19:00:00.000Z	56 \| moderate	11.983 \| good	53.926 \| good	34.143 \| good	0.787 \| good	0.967 \| good	0.095 \| good
2025-06-07T20:00:00.000Z	54 \| moderate	11.032 \| good	49.048 \| good	34.832 \| good	0.872 \| good	1.174 \| good	0.099 \| good
2025-06-07T21:00:00.000Z	52 \| moderate	9.653 \| good	43.119 \| good	32.925 \| good	0.957 \| good	1.381 \| good	0.103 \| good
2025-06-07T22:00:00.000Z	56 \| moderate	12.355 \| fine	54.947 \| good	32.557 \| good	0.669 \| good	1.126 \| good	0.096 \| good
2025-06-07T23:00:00.000Z	54 \| moderate	11.339 \| good	50.072 \| good	30.861 \| good	0.746 \| good	1.344 \| good	0.099 \| good
2025-06-08T00:00:00.000Z	52 \| moderate	10.378 \| good	46.046 \| good	31.014 \| good	0.822 \| good	1.562 \| good	0.103 \| good
2025-06-08T01:00:00.000Z	54 \| moderate	10.732 \| good	47.96 \| good	32.018 \| good	0.598 \| good	2.552 \| good	0.1 \| good
2025-06-08T02:00:00.000Z	58 \| moderate	12.591 \| fine	56.91 \| fine	30.022 \| good	0.711 \| good	3.191 \| good	0.105 \| good
2025-06-08T03:00:00.000Z	56 \| moderate	11.835 \| good	51.993 \| good	28.214 \| good	0.824 \| good	3.83 \| good	0.109 \| good
2025-06-08T04:00:00.000Z	54 \| moderate	11.012 \| good	49.015 \| good	25.618 \| good	0.638 \| good	2.933 \| good	0.101 \| good
2025-06-08T05:00:00.000Z	52 \| moderate	10.493 \| good	46.052 \| good	24.435 \| good	0.802 \| good	3.92 \| good	0.106 \| good

Real-time 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)

Track live Menlo Park, California air quality forecast and history

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

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

How often is air quality information updated for Menlo Park, California?

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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?

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?

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?