What are the current PM10 levels at Los Altos, California?

The current PM10 levels in Los Altos, California are 42.085 μg/m3.

What are the current sulfur dioxide (SO2) levels at Los Altos, California?

The current sulfur dioxide (SO2) levels in Los Altos, California are 0.39 ppb.

What are the current ozone (O3) levels at Los Altos, California?

The current ozone (O3) levels at Los Altos, California is 27.696 ppm.

What are the current nitrogen dioxide (NO2) levels at Los Altos, California?

The current nitrogen dioxide (NO2) levels at Los Altos, California is 7.065 ppb.

Real-time air quality index in Los Altos, California today

Q: What are the current PM2.5 levels in Los Altos, California?

The measured PM2.5 levels in Los Altos, California at present are 9.555 μg/m3.

Stay updated with real-time air quality in Los Altos, 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

Los Altos, California

Last updated: ... (Local time)

Common air pollutants in Los Altos, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.55 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

42.09 μg/m³

155

255

425

605+

Ozone (O₃)

27.70 ppb

201

201+

Sulfur Dioxide (SO₂)

0.39 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.07 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.25 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Los Altos, California

Scroll To Air Quality Map

Track live Los Altos, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T09:00:00.000Z	27 \| good	5.187 \| good	21.745 \| good	18.353 \| good	0.487 \| good	11.76 \| good	0.407 \| good
2026-03-08T10:00:00.000Z	27 \| good	5.212 \| good	22.228 \| good	18.353 \| good	0.348 \| good	7.498 \| good	0.227 \| good
2026-03-08T11:00:00.000Z	38 \| good	6.576 \| good	14.899 \| good	18.353 \| good	0.379 \| good	10.856 \| good	0.2 \| good
2026-03-08T12:00:00.000Z	49 \| good	8.6 \| good	30.703 \| good	19.01 \| good	0.161 \| good	13.385 \| good	0.541 \| good
2026-03-08T13:00:00.000Z	11 \| good	2.073 \| good	9.074 \| good	11.762 \| good	0.429 \| good	8.617 \| good	0.401 \| good
2026-03-08T14:00:00.000Z	10 \| good	0.784 \| good	3.747 \| good	6.509 \| good	0.416 \| good	10.973 \| good	0.394 \| good
2026-03-08T15:00:00.000Z	11 \| good	1.078 \| good	4.421 \| good	9.26 \| good	0.473 \| good	11.865 \| good	0.391 \| good
2026-03-08T16:00:00.000Z	44 \| good	7.986 \| good	13.412 \| good	9.363 \| good	0.485 \| good	10.176 \| good	0.483 \| good
2026-03-08T17:00:00.000Z	27 \| good	5.341 \| good	22.578 \| good	9.433 \| good	0.834 \| good	9.461 \| good	0.491 \| good
2026-03-08T18:00:00.000Z	33 \| good	5.6 \| good	24.37 \| good	12.225 \| good	1.033 \| good	7.32 \| good	0.394 \| good
2026-03-08T19:00:00.000Z	33 \| good	5.695 \| good	24.598 \| good	16.975 \| good	1.054 \| good	5.789 \| good	0.391 \| good
2026-03-08T20:00:00.000Z	27 \| good	5.425 \| good	22.946 \| good	20.935 \| good	1.066 \| good	5.801 \| good	0.388 \| good
2026-03-08T21:00:00.000Z	27 \| good	5.16 \| good	22.7 \| good	21.067 \| good	0.865 \| good	6.375 \| good	0.388 \| good
2026-03-08T22:00:00.000Z	27 \| good	4.624 \| good	20.223 \| good	28.554 \| good	0.667 \| good	5.976 \| good	0.295 \| good
2026-03-08T23:00:00.000Z	27 \| good	5.176 \| good	22.536 \| good	28.782 \| good	0.612 \| good	5.498 \| good	0.295 \| good
2026-03-09T00:00:00.000Z	33 \| good	4.622 \| good	20.264 \| good	36.304 \| good	0.456 \| good	5.19 \| good	0.295 \| good
2026-03-09T01:00:00.000Z	32 \| good	3.037 \| good	13.126 \| good	34.602 \| good	0.468 \| good	5.628 \| good	0.296 \| good
2026-03-09T02:00:00.000Z	32 \| good	3.28 \| good	13.778 \| good	34.629 \| good	0.528 \| good	5.915 \| good	0.295 \| good
2026-03-09T03:00:00.000Z	56 \| moderate	11.553 \| good	51.084 \| good	35.292 \| good	1.879 \| good	21.812 \| good	0.255 \| good
2026-03-09T04:00:00.000Z	33 \| good	5.942 \| good	26.133 \| good	30.84 \| good	0.315 \| good	22.209 \| good	0.394 \| good
2026-03-09T05:00:00.000Z	49 \| good	8.794 \| good	39.014 \| good	25.134 \| good	0.43 \| good	16.768 \| good	0.399 \| good
2026-03-09T06:00:00.000Z	52 \| moderate	10.317 \| good	45.633 \| good	16.733 \| good	0.484 \| good	17.803 \| good	0.397 \| good
2026-03-09T07:00:00.000Z	52 \| moderate	10.257 \| good	45.467 \| good	16.389 \| good	0.477 \| good	17.932 \| good	0.397 \| good
2026-03-09T08:00:00.000Z	49 \| good	8.745 \| good	39.47 \| good	13.623 \| good	0.511 \| good	10.183 \| good	0.392 \| good
2026-03-09T09:00:00.000Z	49 \| good	8.503 \| good	37.749 \| good	12.478 \| good	0.436 \| good	9.192 \| good	0.391 \| good
2026-03-09T10:00:00.000Z	38 \| good	7.336 \| good	32.931 \| good	10.398 \| good	0.363 \| good	7.054 \| good	0.398 \| good
2026-03-09T11:00:00.000Z	33 \| good	6.315 \| good	27.706 \| good	9.174 \| good	0.341 \| good	7.627 \| good	0.396 \| good
2026-03-09T12:00:00.000Z	27 \| good	5.315 \| good	23.551 \| good	9.152 \| good	0.324 \| good	7.581 \| good	0.396 \| good
2026-03-09T13:00:00.000Z	27 \| good	5.192 \| good	22.921 \| good	9.07 \| good	0.503 \| good	7.61 \| good	0.406 \| good
2026-03-09T14:00:00.000Z	22 \| good	4.064 \| good	17.821 \| good	6.042 \| good	0.42 \| good	10.824 \| good	0.495 \| good
2026-03-09T15:00:00.000Z	33 \| good	5.507 \| good	23.646 \| good	5.972 \| good	0.351 \| good	14.591 \| good	0.681 \| good
2026-03-09T16:00:00.000Z	38 \| good	7.071 \| good	31.525 \| good	5.879 \| good	0.433 \| good	14.954 \| good	0.872 \| good
2026-03-09T17:00:00.000Z	49 \| good	8.831 \| good	39.96 \| good	11.465 \| good	0.391 \| good	7.003 \| good	0.417 \| good
2026-03-09T18:00:00.000Z	54 \| moderate	11.292 \| good	50.258 \| good	11.7 \| good	0.357 \| good	7.177 \| good	0.401 \| good
2026-03-09T19:00:00.000Z	56 \| moderate	11.705 \| good	51.938 \| good	19.125 \| good	0.44 \| good	8.616 \| good	0.402 \| good
2026-03-09T20:00:00.000Z	56 \| moderate	11.787 \| good	51.714 \| good	19.339 \| good	0.901 \| good	5.481 \| good	0.301 \| good
2026-03-09T21:00:00.000Z	54 \| moderate	11.483 \| good	51.448 \| good	26.831 \| good	0.643 \| good	7.376 \| good	0.301 \| good
2026-03-09T22:00:00.000Z	56 \| moderate	11.692 \| good	51.794 \| good	29.079 \| good	0.418 \| good	7.023 \| good	0.301 \| good
2026-03-09T23:00:00.000Z	58 \| moderate	12.518 \| fine	55.169 \| fine	29.217 \| good	0.66 \| good	4.541 \| good	0.295 \| good
2026-03-10T00:00:00.000Z	52 \| moderate	10.249 \| good	45.17 \| good	32.139 \| good	0.638 \| good	4.698 \| good	0.294 \| good
2026-03-10T01:00:00.000Z	49 \| good	8.804 \| good	38.181 \| good	27.773 \| good	0.623 \| good	4.642 \| good	0.297 \| good
2026-03-10T02:00:00.000Z	54 \| moderate	10.846 \| good	48.031 \| good	27.951 \| good	0.335 \| good	2.708 \| good	0.293 \| good
2026-03-10T03:00:00.000Z	35 \| good	4.873 \| good	20.974 \| good	37.642 \| good	1.372 \| good	13.348 \| good	0.192 \| good
2026-03-10T04:00:00.000Z	54 \| moderate	11.361 \| good	50.892 \| good	29.725 \| good	0.336 \| good	4.292 \| good	0.293 \| good
2026-03-10T05:00:00.000Z	58 \| moderate	12.839 \| fine	57.149 \| fine	30.393 \| good	0.518 \| good	3.024 \| good	0.296 \| good
2026-03-10T06:00:00.000Z	56 \| moderate	11.836 \| good	53.556 \| good	31.324 \| good	0.294 \| good	3.283 \| good	0.293 \| good
2026-03-10T07:00:00.000Z	56 \| moderate	12.106 \| fine	54.71 \| good	31.177 \| good	0.276 \| good	3.354 \| good	0.292 \| good
2026-03-10T08:00:00.000Z	49 \| good	8.899 \| good	38.847 \| good	24.753 \| good	0.274 \| good	7.328 \| good	0.292 \| good
2026-03-10T08:00:00.000Z	52 \| moderate	9.555 \| good	42.085 \| good	27.696 \| good	0.39 \| good	7.065 \| good	0.251 \| good
2026-03-10T09:00:00.000Z	30 \| good	0.649 \| good	2.144 \| good	32.494 \| good	0.771 \| good	12.835 \| good	0.182 \| good
2026-03-10T10:00:00.000Z	30 \| good	0.606 \| good	2.127 \| good	31.556 \| good	0.725 \| good	11.421 \| good	0.176 \| good
2026-03-10T11:00:00.000Z	31 \| good	0.815 \| good	3.091 \| good	32.568 \| good	0.678 \| good	10.007 \| good	0.169 \| good
2026-03-10T12:00:00.000Z	30 \| good	0.338 \| good	1.121 \| good	31.522 \| good	0.632 \| good	8.593 \| good	0.162 \| good
2026-03-10T13:00:00.000Z	23 \| good	0.402 \| good	1.138 \| good	25.007 \| good	0.651 \| good	8.68 \| good	0.164 \| good
2026-03-10T14:00:00.000Z	17 \| good	0.56 \| good	2.164 \| good	17.814 \| good	0.67 \| good	8.768 \| good	0.166 \| good
2026-03-10T15:00:00.000Z	25 \| good	2.712 \| good	11.035 \| good	27.129 \| good	0.689 \| good	8.856 \| good	0.168 \| good
2026-03-10T16:00:00.000Z	36 \| good	2.961 \| good	12.007 \| good	38.619 \| good	0.719 \| good	7.018 \| good	0.16 \| good
2026-03-10T17:00:00.000Z	36 \| good	1.451 \| good	6.024 \| good	38.785 \| good	0.749 \| good	5.181 \| good	0.151 \| good
2026-03-10T18:00:00.000Z	35 \| good	1.64 \| good	7.01 \| good	37.961 \| good	0.779 \| good	3.344 \| good	0.143 \| good
2026-03-10T19:00:00.000Z	35 \| good	1.025 \| good	4.128 \| good	38.438 \| good	0.765 \| good	2.975 \| good	0.141 \| good
2026-03-10T20:00:00.000Z	36 \| good	0.388 \| good	1.211 \| good	38.871 \| good	0.75 \| good	2.607 \| good	0.138 \| good
2026-03-10T21:00:00.000Z	35 \| good	0.345 \| good	1.23 \| good	38.241 \| good	0.736 \| good	2.238 \| good	0.135 \| good
2026-03-10T22:00:00.000Z	35 \| good	1.802 \| good	7.105 \| good	38.18 \| good	0.736 \| good	2.383 \| good	0.136 \| good
2026-03-10T23:00:00.000Z	34 \| good	2.013 \| good	8.054 \| good	37.028 \| good	0.737 \| good	2.527 \| good	0.137 \| good
2026-03-11T00:00:00.000Z	32 \| good	3.8 \| good	16.076 \| good	35.365 \| good	0.738 \| good	2.672 \| good	0.137 \| good
2026-03-11T01:00:00.000Z	33 \| good	0.329 \| good	1.117 \| good	35.982 \| good	0.767 \| good	5.697 \| good	0.152 \| good
2026-03-11T02:00:00.000Z	33 \| good	2.678 \| good	11.093 \| good	35.732 \| good	0.797 \| good	8.722 \| good	0.167 \| good
2026-03-11T03:00:00.000Z	29 \| good	4.309 \| good	18.932 \| good	30.711 \| good	0.827 \| good	11.747 \| good	0.182 \| good
2026-03-11T04:00:00.000Z	31 \| good	3.271 \| good	13.991 \| good	34.395 \| good	0.882 \| good	13.243 \| good	0.196 \| good
2026-03-11T05:00:00.000Z	30 \| good	2.608 \| good	11.033 \| good	32.416 \| good	0.937 \| good	14.739 \| good	0.211 \| good
2026-03-11T06:00:00.000Z	24 \| good	3.63 \| good	15.953 \| good	25.588 \| good	0.992 \| good	16.235 \| good	0.226 \| good
2026-03-11T07:00:00.000Z	20 \| good	2.128 \| good	9.063 \| good	21.785 \| good	0.997 \| good	16.344 \| good	0.23 \| good
2026-03-11T08:00:00.000Z	25 \| good	0.544 \| good	2.175 \| good	26.765 \| good	1.002 \| good	16.452 \| good	0.234 \| good
2026-03-11T09:00:00.000Z	23 \| good	0.849 \| good	3.182 \| good	24.822 \| good	1.008 \| good	16.561 \| good	0.238 \| good
2026-03-11T10:00:00.000Z	22 \| good	1.245 \| good	5.103 \| good	24.433 \| good	0.993 \| good	15.986 \| good	0.232 \| good
2026-03-11T11:00:00.000Z	22 \| good	2.064 \| good	8.134 \| good	24.298 \| good	0.979 \| good	15.412 \| good	0.225 \| good
2026-03-11T12:00:00.000Z	18 \| good	2.565 \| good	10.118 \| good	18.899 \| good	0.964 \| good	14.837 \| good	0.218 \| good
2026-03-11T13:00:00.000Z	15 \| good	1.608 \| good	6.241 \| good	15.785 \| good	1.058 \| good	14.486 \| good	0.226 \| good
2026-03-11T14:00:00.000Z	13 \| good	0.485 \| good	1.443 \| good	12.68 \| good	1.152 \| good	14.136 \| good	0.233 \| good
2026-03-11T15:00:00.000Z	22 \| good	4.196 \| good	18.219 \| good	12.869 \| good	1.245 \| good	13.785 \| good	0.24 \| good
2026-03-11T16:00:00.000Z	49 \| good	9.114 \| good	41.03 \| good	19.573 \| good	1.454 \| good	11.888 \| good	0.222 \| good
2026-03-11T17:00:00.000Z	44 \| good	7.518 \| good	33.2 \| good	24.461 \| good	1.663 \| good	9.992 \| good	0.203 \| good
2026-03-11T18:00:00.000Z	38 \| good	6.699 \| good	30.261 \| good	30.418 \| good	1.872 \| good	8.095 \| good	0.184 \| good
2026-03-11T19:00:00.000Z	32 \| good	4.426 \| good	19.389 \| good	35.211 \| good	1.748 \| good	7.188 \| good	0.178 \| good
2026-03-11T20:00:00.000Z	34 \| good	5.325 \| good	23.356 \| good	37.429 \| good	1.624 \| good	6.281 \| good	0.171 \| good
2026-03-11T21:00:00.000Z	35 \| good	4.898 \| good	21.305 \| good	38.449 \| good	1.5 \| good	5.374 \| good	0.164 \| good
2026-03-11T22:00:00.000Z	37 \| good	6.454 \| good	29.107 \| good	40.006 \| good	1.453 \| good	5.439 \| good	0.165 \| good
2026-03-11T23:00:00.000Z	35 \| good	5.968 \| good	27.066 \| good	38.183 \| good	1.407 \| good	5.504 \| good	0.165 \| good
2026-03-12T00:00:00.000Z	33 \| good	5.424 \| good	23.307 \| good	35.825 \| good	1.36 \| good	5.569 \| good	0.165 \| good
2026-03-12T01:00:00.000Z	34 \| good	3.913 \| good	17.258 \| good	36.879 \| good	1.396 \| good	9.961 \| good	0.188 \| good
2026-03-12T02:00:00.000Z	31 \| good	2.758 \| good	11.139 \| good	33.24 \| good	1.431 \| good	14.353 \| good	0.21 \| good
2026-03-12T03:00:00.000Z	27 \| good	5.36 \| good	22.94 \| good	20.325 \| good	1.467 \| good	18.745 \| good	0.232 \| good
2026-03-12T04:00:00.000Z	38 \| good	6.782 \| good	29.993 \| good	16.394 \| good	1.62 \| good	19.772 \| good	0.251 \| good
2026-03-12T05:00:00.000Z	33 \| good	5.765 \| good	25.135 \| good	15.387 \| good	1.773 \| good	20.8 \| good	0.27 \| good
2026-03-12T06:00:00.000Z	67 \| moderate	18.028 \| fine	20.667 \| good	16.16 \| good	1.906 \| good	21.627 \| good	0.286 \| good
2026-03-12T07:00:00.000Z	27 \| good	4.996 \| good	21.236 \| good	17.682 \| good	1.901 \| good	21.192 \| good	0.29 \| good
2026-03-12T08:00:00.000Z	20 \| good	2.201 \| good	9.399 \| good	20.395 \| good	1.876 \| good	20.556 \| good	0.292 \| good

Los Altos

Empower business decisions with accurate air quality data

Los Altos, California air quality map: Real-time AQI near you

0.29ppm

How accurate is California, USA air quality data?

Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Los Altos, California updated?

Air quality data for Los Altos, California is updated on an hourly basis.

When did Los Altos, California experience the worst air quality in the last 24 hours?

The worst air quality in Los Altos, California was recorded at 05:00:00 on 2026-03-10.

When did Los Altos, California have its best air quality in the last 24 hours?

The best air quality in Los Altos, California was recorded at 02:00:00 on 2026-03-09.

What is the real-time air quality index for Los Altos, California?

The real-time air quality index in Los Altos, California is 52, currently categorized as Moderate.

Which pollutant is found most often in Los Altos, California?

The most common pollutant in Los Altos, California is PM2.5.

What can I do if the air quality in Los Altos, California is poor?

If the air quality in Los Altos, California is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Los Altos, California?

The measured PM_2.5 levels in Los Altos, California at present are 9.555 μg/m³.

What are the current PM₁₀ levels at Los Altos, California?

The current PM₁₀ levels in Los Altos, California are 42.085 μg/m³.

What are the current carbon monoxide (CO) levels at Los Altos, California?

The current carbon monoxide (CO) level in Los Altos, California is 0.251 ppm.

What are the current sulfur dioxide (SO₂) levels at Los Altos, California?

The current sulfur dioxide (SO₂) levels in Los Altos, California are 0.39 ppb.

What are the current ozone (O₃) levels at Los Altos, California?

The current ozone (O₃) levels at Los Altos, California is 27.696 ppm.

What are the current nitrogen dioxide (NO₂) levels at Los Altos, California?

The current nitrogen dioxide (NO₂) levels at Los Altos, California is 7.065 ppb.

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