What are the current PM10 levels at San Anselmo, California?

The current PM10 levels in San Anselmo, California are 30.795 μg/m3.

What are the current sulfur dioxide (SO2) levels at San Anselmo, California?

The current sulfur dioxide (SO2) levels in San Anselmo, California are 0.687 ppb.

What are the current ozone (O3) levels at San Anselmo, California?

The current ozone (O3) levels at San Anselmo, California is 32.418 ppm.

What are the current nitrogen dioxide (NO2) levels at San Anselmo, California?

The current nitrogen dioxide (NO2) levels at San Anselmo, California is 3.174 ppb.

Real-time air quality index in San Anselmo, California today

Q: What are the current PM2.5 levels in San Anselmo, California?

The measured PM2.5 levels in San Anselmo, California at present are 6.989 μg/m3.

Stay updated with real-time air quality in San Anselmo, 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

San Anselmo, California

Last updated: ... (Local time)

Common air pollutants in San Anselmo, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

8.81 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

40.08 μg/m³

155

255

425

605+

Ozone (O₃)

30.58 ppb

201

201+

Sulfur Dioxide (SO₂)

0.74 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.46 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

San Anselmo, California

Get Live Pollen Counts

San Anselmo, California

Scroll To Air Quality Map

Track live San Anselmo, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-24T05:00:00.000Z	31 \| good	3.212 \| good	13.497 \| good	32.69 \| good	0.446 \| good	2.398 \| good	0.237 \| good
2026-04-24T06:00:00.000Z	30 \| good	3.23 \| good	13.852 \| good	31.91 \| good	0.439 \| good	2.431 \| good	0.237 \| good
2026-04-24T07:00:00.000Z	31 \| good	4.379 \| good	19.914 \| good	32.607 \| good	0.574 \| good	1.705 \| good	0.236 \| good
2026-04-24T08:00:00.000Z	33 \| good	6.012 \| good	26.041 \| good	32.772 \| good	0.42 \| good	0.809 \| good	0.227 \| good
2026-04-24T09:00:00.000Z	33 \| good	5.837 \| good	25.396 \| good	33.081 \| good	0.427 \| good	0.786 \| good	0.227 \| good
2026-04-24T10:00:00.000Z	33 \| good	6.47 \| good	28.37 \| good	33.012 \| good	0.316 \| good	0.647 \| good	0.227 \| good
2026-04-24T11:00:00.000Z	33 \| good	6.451 \| good	27.911 \| good	32.441 \| good	0.316 \| good	1.141 \| good	0.227 \| good
2026-04-24T12:00:00.000Z	33 \| good	5.952 \| good	25.783 \| good	31.22 \| good	0.327 \| good	1.385 \| good	0.236 \| good
2026-04-24T13:00:00.000Z	33 \| good	6.162 \| good	25.706 \| good	31.14 \| good	0.355 \| good	1.421 \| good	0.236 \| good
2026-04-24T14:00:00.000Z	38 \| good	7.379 \| good	32.844 \| good	30.703 \| good	0.403 \| good	6.582 \| good	0.32 \| good
2026-04-24T15:00:00.000Z	44 \| good	7.526 \| good	32.591 \| good	30.153 \| good	0.361 \| good	6.688 \| good	0.32 \| good
2026-04-24T16:00:00.000Z	49 \| good	8.865 \| good	38.794 \| good	28.056 \| good	0.445 \| good	6.36 \| good	0.31 \| good
2026-04-24T17:00:00.000Z	49 \| good	8.889 \| good	38.552 \| good	30.364 \| good	0.375 \| good	6.198 \| good	0.31 \| good
2026-04-24T18:00:00.000Z	49 \| good	8.915 \| good	39.394 \| good	28.49 \| good	0.323 \| good	2.742 \| good	0.31 \| good
2026-04-24T19:00:00.000Z	49 \| good	8.706 \| good	38.543 \| good	31.138 \| good	0.365 \| good	2.565 \| good	0.319 \| good
2026-04-24T20:00:00.000Z	38 \| good	7.495 \| good	33.304 \| good	31.702 \| good	0.323 \| good	2.783 \| good	0.319 \| good
2026-04-24T21:00:00.000Z	38 \| good	7.158 \| good	32.599 \| good	31.574 \| good	0.411 \| good	1.849 \| good	0.236 \| good
2026-04-24T22:00:00.000Z	38 \| good	7.357 \| good	31.492 \| good	33.64 \| good	0.407 \| good	1.855 \| good	0.236 \| good
2026-04-24T23:00:00.000Z	44 \| good	7.666 \| good	32.516 \| good	32.77 \| good	0.307 \| good	2.851 \| good	0.236 \| good
2026-04-25T00:00:00.000Z	44 \| good	7.523 \| good	32.394 \| good	33.36 \| good	0.409 \| good	3.036 \| good	0.236 \| good
2026-04-25T01:00:00.000Z	44 \| good	7.693 \| good	34.372 \| good	32.051 \| good	0.391 \| good	3.033 \| good	0.236 \| good
2026-04-25T02:00:00.000Z	52 \| moderate	10.085 \| good	44.413 \| good	32.682 \| good	0.401 \| good	2.935 \| good	0.229 \| good
2026-04-25T03:00:00.000Z	54 \| moderate	11.036 \| good	49.913 \| good	31.303 \| good	0.459 \| good	3.423 \| good	0.229 \| good
2026-04-25T04:00:00.000Z	54 \| moderate	11.022 \| good	50.521 \| good	30.798 \| good	0.474 \| good	3.428 \| good	0.229 \| good
2026-04-25T05:00:00.000Z	54 \| moderate	10.751 \| good	47.413 \| good	31.097 \| good	0.353 \| good	2.433 \| good	0.236 \| good
2026-04-25T06:00:00.000Z	54 \| moderate	10.798 \| good	48.188 \| good	30.096 \| good	0.339 \| good	2.437 \| good	0.236 \| good
2026-04-25T07:00:00.000Z	52 \| moderate	10.303 \| good	45.255 \| good	32.558 \| good	0.257 \| good	1.667 \| good	0.236 \| good
2026-04-25T08:00:00.000Z	52 \| moderate	9.988 \| good	44.609 \| good	32.922 \| good	0.315 \| good	1.57 \| good	0.236 \| good
2026-04-25T09:00:00.000Z	52 \| moderate	9.889 \| good	42.627 \| good	32.975 \| good	0.315 \| good	1.574 \| good	0.236 \| good
2026-04-25T10:00:00.000Z	52 \| moderate	10.01 \| good	44.693 \| good	32.52 \| good	0.465 \| good	1.543 \| good	0.14 \| good
2026-04-25T11:00:00.000Z	30 \| good	4.652 \| good	20.236 \| good	32.478 \| good	0.534 \| good	1.939 \| good	0.126 \| good
2026-04-25T12:00:00.000Z	44 \| good	7.767 \| good	35.928 \| good	34.64 \| good	0.175 \| good	2.101 \| good	0.247 \| good
2026-04-25T13:00:00.000Z	38 \| good	6.984 \| good	30.632 \| good	34.167 \| good	0.542 \| good	0.908 \| good	0.22 \| good
2026-04-25T14:00:00.000Z	44 \| good	7.552 \| good	32.997 \| good	33.831 \| good	0.672 \| good	2.591 \| good	0.309 \| good
2026-04-25T15:00:00.000Z	38 \| good	7.25 \| good	32.065 \| good	34.757 \| good	0.744 \| good	4.373 \| good	0.317 \| good
2026-04-25T16:00:00.000Z	44 \| good	7.508 \| good	33.492 \| good	34.697 \| good	0.743 \| good	4.37 \| good	0.317 \| good
2026-04-25T17:00:00.000Z	44 \| good	7.806 \| good	34.67 \| good	33.869 \| good	0.853 \| good	4.017 \| good	0.317 \| good
2026-04-25T18:00:00.000Z	44 \| good	7.706 \| good	33.985 \| good	34.615 \| good	1.156 \| good	3.626 \| good	0.309 \| good
2026-04-25T19:00:00.000Z	44 \| good	7.676 \| good	33.536 \| good	32.785 \| good	1.15 \| good	3.627 \| good	0.309 \| good
2026-04-25T20:00:00.000Z	38 \| good	6.873 \| good	30.973 \| good	33.562 \| good	1.49 \| good	2.7 \| good	0.31 \| good
2026-04-25T21:00:00.000Z	38 \| good	7.431 \| good	33.434 \| good	32.201 \| good	1.258 \| good	3.1 \| good	0.31 \| good
2026-04-25T22:00:00.000Z	44 \| good	7.696 \| good	33.741 \| good	32.094 \| good	0.987 \| good	2.156 \| good	0.3 \| good
2026-04-25T23:00:00.000Z	44 \| good	7.593 \| good	33.594 \| good	33.559 \| good	1.066 \| good	3.711 \| good	0.3 \| good
2026-04-26T00:00:00.000Z	44 \| good	7.556 \| good	33.699 \| good	33.087 \| good	0.726 \| good	2.494 \| good	0.302 \| good
2026-04-26T01:00:00.000Z	38 \| good	7.013 \| good	30.666 \| good	33.049 \| good	0.685 \| good	2.909 \| good	0.3 \| good
2026-04-26T02:00:00.000Z	44 \| good	8.384 \| good	37.613 \| good	33.306 \| good	0.949 \| good	3.574 \| good	0.3 \| good
2026-04-26T03:00:00.000Z	44 \| good	8.453 \| good	38.324 \| good	31.507 \| good	0.742 \| good	3.341 \| good	0.31 \| good
2026-04-26T04:00:00.000Z	44 \| good	8.364 \| good	37.607 \| good	31.618 \| good	0.745 \| good	3.346 \| good	0.31 \| good
2026-04-26T04:00:00.000Z	49 \| good	8.81 \| good	40.075 \| good	30.579 \| good	0.744 \| good	3.458 \| good	0.304 \| good
2026-04-26T02:00:00.000Z	36 \| good	3.952 \| good	17.116 \| good	38.549 \| good	0.291 \| good	1.835 \| good	0.124 \| good
2026-04-26T03:00:00.000Z	36 \| good	4.574 \| good	20.005 \| good	38.928 \| good	0.291 \| good	2.198 \| good	0.127 \| good
2026-04-26T04:00:00.000Z	37 \| good	4.283 \| good	18.927 \| good	39.634 \| good	0.333 \| good	2.614 \| good	0.13 \| good
2026-04-26T05:00:00.000Z	35 \| good	4.377 \| good	19.025 \| good	38.35 \| good	0.374 \| good	3.03 \| good	0.133 \| good
2026-04-26T06:00:00.000Z	33 \| good	5.178 \| good	22.073 \| good	36.331 \| good	0.416 \| good	3.446 \| good	0.136 \| good
2026-04-26T07:00:00.000Z	33 \| good	4.149 \| good	18.038 \| good	35.596 \| good	0.422 \| good	3.381 \| good	0.137 \| good
2026-04-26T08:00:00.000Z	34 \| good	5.08 \| good	22 \| good	36.992 \| good	0.427 \| good	3.316 \| good	0.138 \| good
2026-04-26T09:00:00.000Z	35 \| good	5.061 \| good	21.922 \| good	38.176 \| good	0.433 \| good	3.251 \| good	0.139 \| good
2026-04-26T10:00:00.000Z	33 \| good	4.905 \| good	21.073 \| good	35.6 \| good	0.446 \| good	3.235 \| good	0.139 \| good
2026-04-26T11:00:00.000Z	32 \| good	4.308 \| good	18.98 \| good	35.089 \| good	0.459 \| good	3.219 \| good	0.14 \| good
2026-04-26T12:00:00.000Z	33 \| good	6.303 \| good	28.032 \| good	32.554 \| good	0.472 \| good	3.203 \| good	0.14 \| good
2026-04-26T13:00:00.000Z	44 \| good	7.571 \| good	33.041 \| good	31.127 \| good	0.484 \| good	3.075 \| good	0.141 \| good
2026-04-26T14:00:00.000Z	44 \| good	7.571 \| good	33.04 \| good	31.412 \| good	0.496 \| good	2.947 \| good	0.143 \| good
2026-04-26T15:00:00.000Z	49 \| good	8.522 \| good	37.087 \| good	34.942 \| good	0.508 \| good	2.818 \| good	0.144 \| good
2026-04-26T16:00:00.000Z	44 \| good	8.327 \| good	36.819 \| good	35.687 \| good	0.474 \| good	2.238 \| good	0.139 \| good
2026-04-26T17:00:00.000Z	38 \| good	7.087 \| good	31.068 \| good	38.796 \| good	0.441 \| good	1.657 \| good	0.135 \| good
2026-04-26T18:00:00.000Z	38 \| good	7.416 \| good	32.876 \| good	39.632 \| good	0.407 \| good	1.077 \| good	0.131 \| good
2026-04-26T19:00:00.000Z	38 \| good	7.093 \| good	31.832 \| good	39.768 \| good	0.399 \| good	0.939 \| good	0.129 \| good
2026-04-26T20:00:00.000Z	40 \| good	5.774 \| good	25.054 \| good	43.014 \| good	0.39 \| good	0.801 \| good	0.127 \| good
2026-04-26T21:00:00.000Z	41 \| good	4.79 \| good	20.976 \| good	43.914 \| good	0.382 \| good	0.663 \| good	0.125 \| good
2026-04-26T22:00:00.000Z	40 \| good	4.411 \| good	19.078 \| good	43.291 \| good	0.375 \| good	0.711 \| good	0.124 \| good
2026-04-26T23:00:00.000Z	39 \| good	6.066 \| good	27.023 \| good	42.304 \| good	0.368 \| good	0.759 \| good	0.124 \| good
2026-04-27T00:00:00.000Z	40 \| good	3.696 \| good	16 \| good	43.185 \| good	0.361 \| good	0.807 \| good	0.123 \| good
2026-04-27T01:00:00.000Z	40 \| good	4.576 \| good	19.962 \| good	43.432 \| good	0.365 \| good	1.262 \| good	0.125 \| good
2026-04-27T02:00:00.000Z	39 \| good	4.626 \| good	20.034 \| good	42.13 \| good	0.369 \| good	1.716 \| good	0.126 \| good
2026-04-27T03:00:00.000Z	35 \| good	4.17 \| good	18.091 \| good	38.314 \| good	0.373 \| good	2.171 \| good	0.128 \| good
2026-04-27T04:00:00.000Z	34 \| good	3.368 \| good	14.947 \| good	37.142 \| good	0.405 \| good	2.832 \| good	0.13 \| good
2026-04-27T05:00:00.000Z	32 \| good	3.473 \| good	15.063 \| good	35.14 \| good	0.438 \| good	3.492 \| good	0.133 \| good
2026-04-27T06:00:00.000Z	31 \| good	4.139 \| good	18 \| good	32.534 \| good	0.47 \| good	4.153 \| good	0.136 \| good
2026-04-27T07:00:00.000Z	29 \| good	3.395 \| good	15.055 \| good	30.538 \| good	0.451 \| good	3.982 \| good	0.135 \| good
2026-04-27T08:00:00.000Z	28 \| good	3.984 \| good	17.09 \| good	29.602 \| good	0.432 \| good	3.81 \| good	0.134 \| good
2026-04-27T09:00:00.000Z	27 \| good	3.959 \| good	17.074 \| good	28.758 \| good	0.413 \| good	3.639 \| good	0.133 \| good
2026-04-27T10:00:00.000Z	28 \| good	3.822 \| good	16.892 \| good	29.653 \| good	0.395 \| good	3.532 \| good	0.132 \| good
2026-04-27T11:00:00.000Z	28 \| good	2.859 \| good	11.956 \| good	30.363 \| good	0.377 \| good	3.425 \| good	0.131 \| good
2026-04-27T12:00:00.000Z	32 \| good	3.19 \| good	13.873 \| good	34.702 \| good	0.359 \| good	3.318 \| good	0.13 \| good
2026-04-27T13:00:00.000Z	31 \| good	4.179 \| good	18.041 \| good	32.902 \| good	0.366 \| good	3.454 \| good	0.135 \| good
2026-04-27T14:00:00.000Z	30 \| good	3.48 \| good	15.029 \| good	31.962 \| good	0.372 \| good	3.589 \| good	0.14 \| good
2026-04-27T15:00:00.000Z	33 \| good	5.27 \| good	22.891 \| good	36.413 \| good	0.378 \| good	3.725 \| good	0.145 \| good
2026-04-27T16:00:00.000Z	36 \| good	4.927 \| good	21.077 \| good	38.99 \| good	0.405 \| good	2.866 \| good	0.138 \| good
2026-04-27T17:00:00.000Z	37 \| good	6.3 \| good	27.969 \| good	40.016 \| good	0.431 \| good	2.008 \| good	0.131 \| good
2026-04-27T18:00:00.000Z	38 \| good	6.503 \| good	28.965 \| good	40.969 \| good	0.458 \| good	1.149 \| good	0.124 \| good
2026-04-27T19:00:00.000Z	37 \| good	6.031 \| good	26.895 \| good	39.946 \| good	0.445 \| good	1.022 \| good	0.123 \| good
2026-04-27T20:00:00.000Z	37 \| good	5.99 \| good	26.813 \| good	39.587 \| good	0.433 \| good	0.894 \| good	0.121 \| good
2026-04-27T21:00:00.000Z	37 \| good	5.194 \| good	22.068 \| good	39.998 \| good	0.42 \| good	0.767 \| good	0.12 \| good
2026-04-27T22:00:00.000Z	38 \| good	6.671 \| good	29.902 \| good	39.537 \| good	0.42 \| good	0.814 \| good	0.119 \| good
2026-04-27T23:00:00.000Z	44 \| good	7.795 \| good	33.975 \| good	39.082 \| good	0.42 \| good	0.861 \| good	0.118 \| good
2026-04-28T00:00:00.000Z	52 \| moderate	9.981 \| good	14.849 \| good	49.246 \| good	0.413 \| good	0.891 \| good	0.117 \| good
2026-04-28T01:00:00.000Z	38 \| good	5.734 \| good	24.85 \| good	41.023 \| good	0.418 \| good	1.645 \| good	0.12 \| good

San Anselmo

Empower business decisions with accurate air quality data

San Anselmo, California air quality map: Real-time AQI near you

0.31ppm

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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Check live rankings of places in the USA affected by air pollution.

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Frequently asked questions

How frequently is the air quality data for San Anselmo, California updated?

Air quality data for San Anselmo, California is updated on an hourly basis.

When did San Anselmo, California experience the worst air quality in the last 24 hours?

The worst air quality in San Anselmo, California was recorded at 04:00:00 on 2026-04-25.

When did San Anselmo, California have its best air quality in the last 24 hours?

The best air quality in San Anselmo, California was recorded at 11:00:00 on 2026-04-25.

What is the real-time air quality index for San Anselmo, California?

The real-time air quality index in San Anselmo, California is 38, currently categorized as Good.

Which pollutant is found most often in San Anselmo, California?

The most common pollutant in San Anselmo, California is PM2.5.

What can I do if the air quality in San Anselmo, California is poor?

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

What are the current PM_2.5 levels in San Anselmo, California?

The measured PM_2.5 levels in San Anselmo, California at present are 6.989 μg/m³.

What are the current PM₁₀ levels at San Anselmo, California?

The current PM₁₀ levels in San Anselmo, California are 30.795 μg/m³.

What are the current carbon monoxide (CO) levels at San Anselmo, California?

The current carbon monoxide (CO) level in San Anselmo, California is 0.3 ppm.

What are the current sulfur dioxide (SO₂) levels at San Anselmo, California?

The current sulfur dioxide (SO₂) levels in San Anselmo, California are 0.687 ppb.

What are the current ozone (O₃) levels at San Anselmo, California?

The current ozone (O₃) levels at San Anselmo, California is 32.418 ppm.

What are the current nitrogen dioxide (NO₂) levels at San Anselmo, California?

The current nitrogen dioxide (NO₂) levels at San Anselmo, California is 3.174 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-24T05:00:00.000Z	31 \| good	3.212 \| good	13.497 \| good	32.69 \| good	0.446 \| good	2.398 \| good	0.237 \| good
2026-04-24T06:00:00.000Z	30 \| good	3.23 \| good	13.852 \| good	31.91 \| good	0.439 \| good	2.431 \| good	0.237 \| good
2026-04-24T07:00:00.000Z	31 \| good	4.379 \| good	19.914 \| good	32.607 \| good	0.574 \| good	1.705 \| good	0.236 \| good
2026-04-24T08:00:00.000Z	33 \| good	6.012 \| good	26.041 \| good	32.772 \| good	0.42 \| good	0.809 \| good	0.227 \| good
2026-04-24T09:00:00.000Z	33 \| good	5.837 \| good	25.396 \| good	33.081 \| good	0.427 \| good	0.786 \| good	0.227 \| good
2026-04-24T10:00:00.000Z	33 \| good	6.47 \| good	28.37 \| good	33.012 \| good	0.316 \| good	0.647 \| good	0.227 \| good
2026-04-24T11:00:00.000Z	33 \| good	6.451 \| good	27.911 \| good	32.441 \| good	0.316 \| good	1.141 \| good	0.227 \| good
2026-04-24T12:00:00.000Z	33 \| good	5.952 \| good	25.783 \| good	31.22 \| good	0.327 \| good	1.385 \| good	0.236 \| good
2026-04-24T13:00:00.000Z	33 \| good	6.162 \| good	25.706 \| good	31.14 \| good	0.355 \| good	1.421 \| good	0.236 \| good
2026-04-24T14:00:00.000Z	38 \| good	7.379 \| good	32.844 \| good	30.703 \| good	0.403 \| good	6.582 \| good	0.32 \| good
2026-04-24T15:00:00.000Z	44 \| good	7.526 \| good	32.591 \| good	30.153 \| good	0.361 \| good	6.688 \| good	0.32 \| good
2026-04-24T16:00:00.000Z	49 \| good	8.865 \| good	38.794 \| good	28.056 \| good	0.445 \| good	6.36 \| good	0.31 \| good
2026-04-24T17:00:00.000Z	49 \| good	8.889 \| good	38.552 \| good	30.364 \| good	0.375 \| good	6.198 \| good	0.31 \| good
2026-04-24T18:00:00.000Z	49 \| good	8.915 \| good	39.394 \| good	28.49 \| good	0.323 \| good	2.742 \| good	0.31 \| good
2026-04-24T19:00:00.000Z	49 \| good	8.706 \| good	38.543 \| good	31.138 \| good	0.365 \| good	2.565 \| good	0.319 \| good
2026-04-24T20:00:00.000Z	38 \| good	7.495 \| good	33.304 \| good	31.702 \| good	0.323 \| good	2.783 \| good	0.319 \| good
2026-04-24T21:00:00.000Z	38 \| good	7.158 \| good	32.599 \| good	31.574 \| good	0.411 \| good	1.849 \| good	0.236 \| good
2026-04-24T22:00:00.000Z	38 \| good	7.357 \| good	31.492 \| good	33.64 \| good	0.407 \| good	1.855 \| good	0.236 \| good
2026-04-24T23:00:00.000Z	44 \| good	7.666 \| good	32.516 \| good	32.77 \| good	0.307 \| good	2.851 \| good	0.236 \| good
2026-04-25T00:00:00.000Z	44 \| good	7.523 \| good	32.394 \| good	33.36 \| good	0.409 \| good	3.036 \| good	0.236 \| good
2026-04-25T01:00:00.000Z	44 \| good	7.693 \| good	34.372 \| good	32.051 \| good	0.391 \| good	3.033 \| good	0.236 \| good
2026-04-25T02:00:00.000Z	52 \| moderate	10.085 \| good	44.413 \| good	32.682 \| good	0.401 \| good	2.935 \| good	0.229 \| good
2026-04-25T03:00:00.000Z	54 \| moderate	11.036 \| good	49.913 \| good	31.303 \| good	0.459 \| good	3.423 \| good	0.229 \| good
2026-04-25T04:00:00.000Z	54 \| moderate	11.022 \| good	50.521 \| good	30.798 \| good	0.474 \| good	3.428 \| good	0.229 \| good
2026-04-25T05:00:00.000Z	54 \| moderate	10.751 \| good	47.413 \| good	31.097 \| good	0.353 \| good	2.433 \| good	0.236 \| good
2026-04-25T06:00:00.000Z	54 \| moderate	10.798 \| good	48.188 \| good	30.096 \| good	0.339 \| good	2.437 \| good	0.236 \| good
2026-04-25T07:00:00.000Z	52 \| moderate	10.303 \| good	45.255 \| good	32.558 \| good	0.257 \| good	1.667 \| good	0.236 \| good
2026-04-25T08:00:00.000Z	52 \| moderate	9.988 \| good	44.609 \| good	32.922 \| good	0.315 \| good	1.57 \| good	0.236 \| good
2026-04-25T09:00:00.000Z	52 \| moderate	9.889 \| good	42.627 \| good	32.975 \| good	0.315 \| good	1.574 \| good	0.236 \| good
2026-04-25T10:00:00.000Z	52 \| moderate	10.01 \| good	44.693 \| good	32.52 \| good	0.465 \| good	1.543 \| good	0.14 \| good
2026-04-25T11:00:00.000Z	30 \| good	4.652 \| good	20.236 \| good	32.478 \| good	0.534 \| good	1.939 \| good	0.126 \| good
2026-04-25T12:00:00.000Z	44 \| good	7.767 \| good	35.928 \| good	34.64 \| good	0.175 \| good	2.101 \| good	0.247 \| good
2026-04-25T13:00:00.000Z	38 \| good	6.984 \| good	30.632 \| good	34.167 \| good	0.542 \| good	0.908 \| good	0.22 \| good
2026-04-25T14:00:00.000Z	44 \| good	7.552 \| good	32.997 \| good	33.831 \| good	0.672 \| good	2.591 \| good	0.309 \| good
2026-04-25T15:00:00.000Z	38 \| good	7.25 \| good	32.065 \| good	34.757 \| good	0.744 \| good	4.373 \| good	0.317 \| good
2026-04-25T16:00:00.000Z	44 \| good	7.508 \| good	33.492 \| good	34.697 \| good	0.743 \| good	4.37 \| good	0.317 \| good
2026-04-25T17:00:00.000Z	44 \| good	7.806 \| good	34.67 \| good	33.869 \| good	0.853 \| good	4.017 \| good	0.317 \| good
2026-04-25T18:00:00.000Z	44 \| good	7.706 \| good	33.985 \| good	34.615 \| good	1.156 \| good	3.626 \| good	0.309 \| good
2026-04-25T19:00:00.000Z	44 \| good	7.676 \| good	33.536 \| good	32.785 \| good	1.15 \| good	3.627 \| good	0.309 \| good
2026-04-25T20:00:00.000Z	38 \| good	6.873 \| good	30.973 \| good	33.562 \| good	1.49 \| good	2.7 \| good	0.31 \| good
2026-04-25T21:00:00.000Z	38 \| good	7.431 \| good	33.434 \| good	32.201 \| good	1.258 \| good	3.1 \| good	0.31 \| good
2026-04-25T22:00:00.000Z	44 \| good	7.696 \| good	33.741 \| good	32.094 \| good	0.987 \| good	2.156 \| good	0.3 \| good
2026-04-25T23:00:00.000Z	44 \| good	7.593 \| good	33.594 \| good	33.559 \| good	1.066 \| good	3.711 \| good	0.3 \| good
2026-04-26T00:00:00.000Z	44 \| good	7.556 \| good	33.699 \| good	33.087 \| good	0.726 \| good	2.494 \| good	0.302 \| good
2026-04-26T01:00:00.000Z	38 \| good	7.013 \| good	30.666 \| good	33.049 \| good	0.685 \| good	2.909 \| good	0.3 \| good
2026-04-26T02:00:00.000Z	44 \| good	8.384 \| good	37.613 \| good	33.306 \| good	0.949 \| good	3.574 \| good	0.3 \| good
2026-04-26T03:00:00.000Z	44 \| good	8.453 \| good	38.324 \| good	31.507 \| good	0.742 \| good	3.341 \| good	0.31 \| good
2026-04-26T04:00:00.000Z	44 \| good	8.364 \| good	37.607 \| good	31.618 \| good	0.745 \| good	3.346 \| good	0.31 \| good
2026-04-26T04:00:00.000Z	49 \| good	8.81 \| good	40.075 \| good	30.579 \| good	0.744 \| good	3.458 \| good	0.304 \| good
2026-04-26T02:00:00.000Z	36 \| good	3.952 \| good	17.116 \| good	38.549 \| good	0.291 \| good	1.835 \| good	0.124 \| good
2026-04-26T03:00:00.000Z	36 \| good	4.574 \| good	20.005 \| good	38.928 \| good	0.291 \| good	2.198 \| good	0.127 \| good
2026-04-26T04:00:00.000Z	37 \| good	4.283 \| good	18.927 \| good	39.634 \| good	0.333 \| good	2.614 \| good	0.13 \| good
2026-04-26T05:00:00.000Z	35 \| good	4.377 \| good	19.025 \| good	38.35 \| good	0.374 \| good	3.03 \| good	0.133 \| good
2026-04-26T06:00:00.000Z	33 \| good	5.178 \| good	22.073 \| good	36.331 \| good	0.416 \| good	3.446 \| good	0.136 \| good
2026-04-26T07:00:00.000Z	33 \| good	4.149 \| good	18.038 \| good	35.596 \| good	0.422 \| good	3.381 \| good	0.137 \| good
2026-04-26T08:00:00.000Z	34 \| good	5.08 \| good	22 \| good	36.992 \| good	0.427 \| good	3.316 \| good	0.138 \| good
2026-04-26T09:00:00.000Z	35 \| good	5.061 \| good	21.922 \| good	38.176 \| good	0.433 \| good	3.251 \| good	0.139 \| good
2026-04-26T10:00:00.000Z	33 \| good	4.905 \| good	21.073 \| good	35.6 \| good	0.446 \| good	3.235 \| good	0.139 \| good
2026-04-26T11:00:00.000Z	32 \| good	4.308 \| good	18.98 \| good	35.089 \| good	0.459 \| good	3.219 \| good	0.14 \| good
2026-04-26T12:00:00.000Z	33 \| good	6.303 \| good	28.032 \| good	32.554 \| good	0.472 \| good	3.203 \| good	0.14 \| good
2026-04-26T13:00:00.000Z	44 \| good	7.571 \| good	33.041 \| good	31.127 \| good	0.484 \| good	3.075 \| good	0.141 \| good
2026-04-26T14:00:00.000Z	44 \| good	7.571 \| good	33.04 \| good	31.412 \| good	0.496 \| good	2.947 \| good	0.143 \| good
2026-04-26T15:00:00.000Z	49 \| good	8.522 \| good	37.087 \| good	34.942 \| good	0.508 \| good	2.818 \| good	0.144 \| good
2026-04-26T16:00:00.000Z	44 \| good	8.327 \| good	36.819 \| good	35.687 \| good	0.474 \| good	2.238 \| good	0.139 \| good
2026-04-26T17:00:00.000Z	38 \| good	7.087 \| good	31.068 \| good	38.796 \| good	0.441 \| good	1.657 \| good	0.135 \| good
2026-04-26T18:00:00.000Z	38 \| good	7.416 \| good	32.876 \| good	39.632 \| good	0.407 \| good	1.077 \| good	0.131 \| good
2026-04-26T19:00:00.000Z	38 \| good	7.093 \| good	31.832 \| good	39.768 \| good	0.399 \| good	0.939 \| good	0.129 \| good
2026-04-26T20:00:00.000Z	40 \| good	5.774 \| good	25.054 \| good	43.014 \| good	0.39 \| good	0.801 \| good	0.127 \| good
2026-04-26T21:00:00.000Z	41 \| good	4.79 \| good	20.976 \| good	43.914 \| good	0.382 \| good	0.663 \| good	0.125 \| good
2026-04-26T22:00:00.000Z	40 \| good	4.411 \| good	19.078 \| good	43.291 \| good	0.375 \| good	0.711 \| good	0.124 \| good
2026-04-26T23:00:00.000Z	39 \| good	6.066 \| good	27.023 \| good	42.304 \| good	0.368 \| good	0.759 \| good	0.124 \| good
2026-04-27T00:00:00.000Z	40 \| good	3.696 \| good	16 \| good	43.185 \| good	0.361 \| good	0.807 \| good	0.123 \| good
2026-04-27T01:00:00.000Z	40 \| good	4.576 \| good	19.962 \| good	43.432 \| good	0.365 \| good	1.262 \| good	0.125 \| good
2026-04-27T02:00:00.000Z	39 \| good	4.626 \| good	20.034 \| good	42.13 \| good	0.369 \| good	1.716 \| good	0.126 \| good
2026-04-27T03:00:00.000Z	35 \| good	4.17 \| good	18.091 \| good	38.314 \| good	0.373 \| good	2.171 \| good	0.128 \| good
2026-04-27T04:00:00.000Z	34 \| good	3.368 \| good	14.947 \| good	37.142 \| good	0.405 \| good	2.832 \| good	0.13 \| good
2026-04-27T05:00:00.000Z	32 \| good	3.473 \| good	15.063 \| good	35.14 \| good	0.438 \| good	3.492 \| good	0.133 \| good
2026-04-27T06:00:00.000Z	31 \| good	4.139 \| good	18 \| good	32.534 \| good	0.47 \| good	4.153 \| good	0.136 \| good
2026-04-27T07:00:00.000Z	29 \| good	3.395 \| good	15.055 \| good	30.538 \| good	0.451 \| good	3.982 \| good	0.135 \| good
2026-04-27T08:00:00.000Z	28 \| good	3.984 \| good	17.09 \| good	29.602 \| good	0.432 \| good	3.81 \| good	0.134 \| good
2026-04-27T09:00:00.000Z	27 \| good	3.959 \| good	17.074 \| good	28.758 \| good	0.413 \| good	3.639 \| good	0.133 \| good
2026-04-27T10:00:00.000Z	28 \| good	3.822 \| good	16.892 \| good	29.653 \| good	0.395 \| good	3.532 \| good	0.132 \| good
2026-04-27T11:00:00.000Z	28 \| good	2.859 \| good	11.956 \| good	30.363 \| good	0.377 \| good	3.425 \| good	0.131 \| good
2026-04-27T12:00:00.000Z	32 \| good	3.19 \| good	13.873 \| good	34.702 \| good	0.359 \| good	3.318 \| good	0.13 \| good
2026-04-27T13:00:00.000Z	31 \| good	4.179 \| good	18.041 \| good	32.902 \| good	0.366 \| good	3.454 \| good	0.135 \| good
2026-04-27T14:00:00.000Z	30 \| good	3.48 \| good	15.029 \| good	31.962 \| good	0.372 \| good	3.589 \| good	0.14 \| good
2026-04-27T15:00:00.000Z	33 \| good	5.27 \| good	22.891 \| good	36.413 \| good	0.378 \| good	3.725 \| good	0.145 \| good
2026-04-27T16:00:00.000Z	36 \| good	4.927 \| good	21.077 \| good	38.99 \| good	0.405 \| good	2.866 \| good	0.138 \| good
2026-04-27T17:00:00.000Z	37 \| good	6.3 \| good	27.969 \| good	40.016 \| good	0.431 \| good	2.008 \| good	0.131 \| good
2026-04-27T18:00:00.000Z	38 \| good	6.503 \| good	28.965 \| good	40.969 \| good	0.458 \| good	1.149 \| good	0.124 \| good
2026-04-27T19:00:00.000Z	37 \| good	6.031 \| good	26.895 \| good	39.946 \| good	0.445 \| good	1.022 \| good	0.123 \| good
2026-04-27T20:00:00.000Z	37 \| good	5.99 \| good	26.813 \| good	39.587 \| good	0.433 \| good	0.894 \| good	0.121 \| good
2026-04-27T21:00:00.000Z	37 \| good	5.194 \| good	22.068 \| good	39.998 \| good	0.42 \| good	0.767 \| good	0.12 \| good
2026-04-27T22:00:00.000Z	38 \| good	6.671 \| good	29.902 \| good	39.537 \| good	0.42 \| good	0.814 \| good	0.119 \| good
2026-04-27T23:00:00.000Z	44 \| good	7.795 \| good	33.975 \| good	39.082 \| good	0.42 \| good	0.861 \| good	0.118 \| good
2026-04-28T00:00:00.000Z	52 \| moderate	9.981 \| good	14.849 \| good	49.246 \| good	0.413 \| good	0.891 \| good	0.117 \| good
2026-04-28T01:00:00.000Z	38 \| good	5.734 \| good	24.85 \| good	41.023 \| good	0.418 \| good	1.645 \| good	0.12 \| good

Real-time air quality index in San Anselmo, California today

Common air pollutants in San Anselmo, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live San Anselmo, California air quality forecast and history

Empower business decisions with accurate air quality data

San Anselmo, California air quality map: Real-time AQI near you

Air quality in nearby cities

San Rafael, California

Larkspur, California

Mill Valley, California

TamalpaisHomestead Valley, California

Novato, California

San Pablo, California

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently is the air quality data for San Anselmo, California updated?

When did San Anselmo, California experience the worst air quality in the last 24 hours?

When did San Anselmo, California have its best air quality in the last 24 hours?

What is the real-time air quality index for San Anselmo, California?

Which pollutant is found most often in San Anselmo, California?

What can I do if the air quality in San Anselmo, California is poor?

What are the current PM2.5 levels in San Anselmo, California?

What are the current PM10 levels at San Anselmo, California?

What are the current carbon monoxide (CO) levels at San Anselmo, California?

What are the current sulfur dioxide (SO2) levels at San Anselmo, California?

What are the current ozone (O3) levels at San Anselmo, California?

What are the current nitrogen dioxide (NO2) levels at San Anselmo, California?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in San Anselmo, California?

What are the current PM₁₀ levels at San Anselmo, California?

What are the current sulfur dioxide (SO₂) levels at San Anselmo, California?

What are the current ozone (O₃) levels at San Anselmo, California?

What are the current nitrogen dioxide (NO₂) levels at San Anselmo, California?