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

The current PM10 levels in San Anselmo, California are 38.436 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 0.267 ppb.

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

The current ozone (O3) levels at San Anselmo, California is 13.076 ppm.

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

The current nitrogen dioxide (NO2) levels at San Anselmo, California is 4.776 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 8.427 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)

8.43 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

38.44 μg/m³

155

255

425

605+

Ozone (O₃)

13.08 ppb

201

201+

Sulfur Dioxide (SO₂)

0.27 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.78 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 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
2025-12-06T02:00:00.000Z	60 \| moderate	13.803 \| fine	62.739 \| fine	13.038 \| good	0.32 \| good	9.87 \| good	0.316 \| good
2025-12-06T03:00:00.000Z	60 \| moderate	13.898 \| fine	63.17 \| fine	11.605 \| good	0.309 \| good	10.947 \| good	0.409 \| good
2025-12-06T04:00:00.000Z	64 \| moderate	15.948 \| fine	72.045 \| fine	10.351 \| good	0.332 \| good	11.292 \| good	0.424 \| good
2025-12-06T05:00:00.000Z	69 \| moderate	19.425 \| fine	85.994 \| fine	9.432 \| good	0.437 \| good	11.256 \| good	0.432 \| good
2025-12-06T06:00:00.000Z	71 \| moderate	20.046 \| fine	88.009 \| fine	9.432 \| good	0.374 \| good	10.489 \| good	0.418 \| good
2025-12-06T07:00:00.000Z	69 \| moderate	19.167 \| fine	84.495 \| fine	9.534 \| good	0.383 \| good	10.226 \| good	0.418 \| good
2025-12-06T08:00:00.000Z	67 \| moderate	17.877 \| fine	78.714 \| fine	11.29 \| good	0.362 \| good	7.836 \| good	0.328 \| good
2025-12-06T09:00:00.000Z	67 \| moderate	17.877 \| fine	78.714 \| fine	11.29 \| good	0.391 \| good	7.261 \| good	0.299 \| good
2025-12-06T10:00:00.000Z	67 \| moderate	18.055 \| fine	79.044 \| fine	11.415 \| good	0.95 \| good	4.819 \| good	0.42 \| good
2025-12-06T11:00:00.000Z	53 \| moderate	9.142 \| good	60.076 \| fine	11.919 \| good	0.874 \| good	4.803 \| good	0.378 \| good
2025-12-06T12:00:00.000Z	64 \| moderate	15.991 \| fine	65.081 \| fine	13.31 \| good	0.338 \| good	9.28 \| good	0.384 \| good
2025-12-06T13:00:00.000Z	62 \| moderate	14.885 \| fine	66.237 \| fine	13.643 \| good	0.339 \| good	4.846 \| good	0.302 \| good
2025-12-06T14:00:00.000Z	71 \| moderate	20.232 \| fine	88.72 \| fine	11.086 \| good	0.502 \| good	6.923 \| good	0.306 \| good
2025-12-06T15:00:00.000Z	81 \| moderate	24.554 \| fine	108.135 \| fine	12.03 \| good	0.422 \| good	7.163 \| good	0.312 \| good
2025-12-06T16:00:00.000Z	81 \| moderate	24.804 \| fine	107.544 \| fine	11.673 \| good	0.408 \| good	7.013 \| good	0.314 \| good
2025-12-06T17:00:00.000Z	77 \| moderate	22.562 \| fine	98.904 \| fine	12.688 \| good	0.484 \| good	6.079 \| good	0.318 \| good
2025-12-06T18:00:00.000Z	73 \| moderate	20.763 \| fine	92.145 \| fine	11.908 \| good	0.567 \| good	5.232 \| good	0.312 \| good
2025-12-06T19:00:00.000Z	66 \| moderate	17.471 \| fine	76.384 \| fine	12.035 \| good	0.53 \| good	4.97 \| good	0.316 \| good
2025-12-06T20:00:00.000Z	64 \| moderate	15.55 \| fine	70.53 \| fine	12.876 \| good	0.519 \| good	4.34 \| good	0.316 \| good
2025-12-06T21:00:00.000Z	58 \| moderate	13.071 \| fine	58.426 \| fine	13.817 \| good	0.54 \| good	3.807 \| good	0.316 \| good
2025-12-06T22:00:00.000Z	52 \| moderate	10.14 \| good	44.948 \| good	13.959 \| good	0.496 \| good	3.78 \| good	0.316 \| good
2025-12-06T23:00:00.000Z	52 \| moderate	9.977 \| good	44.387 \| good	14.061 \| good	0.391 \| good	4.048 \| good	0.4 \| good
2025-12-07T00:00:00.000Z	49 \| good	9.482 \| good	38.124 \| good	13.979 \| good	0.381 \| good	5.607 \| good	0.4 \| good
2025-12-07T01:00:00.000Z	52 \| moderate	10.304 \| good	45.598 \| good	13.078 \| good	0.33 \| good	4.892 \| good	0.402 \| good
2025-12-07T02:00:00.000Z	52 \| moderate	9.637 \| good	41.875 \| good	12.994 \| good	0.244 \| good	5.104 \| good	0.316 \| good
2025-12-07T03:00:00.000Z	56 \| moderate	12.322 \| fine	55.58 \| fine	11.967 \| good	0.262 \| good	6.267 \| good	0.318 \| good
2025-12-07T04:00:00.000Z	60 \| moderate	13.774 \| fine	61.959 \| fine	11.847 \| good	0.285 \| good	7.268 \| good	0.406 \| good
2025-12-07T05:00:00.000Z	62 \| moderate	14.944 \| fine	65.95 \| fine	11.767 \| good	0.225 \| good	7.156 \| good	0.408 \| good
2025-12-07T06:00:00.000Z	58 \| moderate	13.406 \| fine	60.675 \| fine	10.815 \| good	0.224 \| good	6.749 \| good	0.406 \| good
2025-12-07T07:00:00.000Z	60 \| moderate	13.644 \| fine	60.519 \| fine	10.716 \| good	0.227 \| good	6.749 \| good	0.406 \| good
2025-12-07T08:00:00.000Z	60 \| moderate	14.147 \| fine	62.947 \| fine	10.833 \| good	0.21 \| good	6.739 \| good	0.41 \| good
2025-12-07T09:00:00.000Z	60 \| moderate	14.253 \| fine	64.598 \| fine	10.847 \| good	0.263 \| good	6.551 \| good	0.398 \| good
2025-12-07T10:00:00.000Z	60 \| moderate	13.819 \| fine	62.708 \| fine	10.794 \| good	0.475 \| good	3.824 \| good	0.252 \| good
2025-12-07T11:00:00.000Z	62 \| moderate	15.276 \| fine	73.908 \| fine	10.961 \| good	0.505 \| good	3.337 \| good	0.252 \| good
2025-12-07T12:00:00.000Z	67 \| moderate	18.224 \| fine	84.192 \| fine	8.053 \| good	0.35 \| good	2.716 \| good	0.202 \| good
2025-12-07T13:00:00.000Z	73 \| moderate	20.827 \| fine	92.204 \| fine	11.629 \| good	0.302 \| good	6.156 \| good	0.296 \| good
2025-12-07T14:00:00.000Z	75 \| moderate	22.357 \| fine	99.457 \| fine	11.676 \| good	0.347 \| good	5.722 \| good	0.312 \| good
2025-12-07T15:00:00.000Z	82 \| moderate	25.981 \| fine	113.499 \| fine	11.175 \| good	0.325 \| good	5.906 \| good	0.306 \| good
2025-12-07T16:00:00.000Z	81 \| moderate	25.237 \| fine	108.485 \| fine	10.954 \| good	0.261 \| good	6.382 \| good	0.306 \| good
2025-12-07T17:00:00.000Z	79 \| moderate	24.481 \| fine	107.042 \| fine	10.175 \| good	0.284 \| good	6.597 \| good	0.306 \| good
2025-12-07T18:00:00.000Z	77 \| moderate	23.383 \| fine	101.48 \| fine	11.03 \| good	0.3 \| good	6.184 \| good	0.318 \| good
2025-12-07T19:00:00.000Z	71 \| moderate	20.181 \| fine	88.283 \| fine	12.855 \| good	0.33 \| good	4.687 \| good	0.318 \| good
2025-12-07T20:00:00.000Z	69 \| moderate	18.568 \| fine	81.31 \| fine	12.896 \| good	0.312 \| good	4.387 \| good	0.316 \| good
2025-12-07T21:00:00.000Z	64 \| moderate	16.265 \| fine	72.478 \| fine	12.136 \| good	0.396 \| good	5.345 \| good	0.314 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	16.594 \| fine	74.117 \| fine	13.035 \| good	0.33 \| good	3.235 \| good	0.312 \| good
2025-12-07T23:00:00.000Z	56 \| moderate	11.916 \| good	52.987 \| good	13.977 \| good	0.284 \| good	3 \| good	0.312 \| good
2025-12-08T00:00:00.000Z	52 \| moderate	10.325 \| good	46.767 \| good	13.954 \| good	0.341 \| good	3.704 \| good	0.312 \| good
2025-12-08T01:00:00.000Z	44 \| good	8.427 \| good	38.436 \| good	13.076 \| good	0.267 \| good	4.776 \| good	0.316 \| good
2025-12-08T01:00:00.000Z	44 \| good	8.427 \| good	38.436 \| good	13.076 \| good	0.267 \| good	4.776 \| good	0.316 \| good
2025-12-08T02:00:00.000Z	27 \| good	5.311 \| good	22.496 \| good	10.012 \| good	1.195 \| good	12.91 \| good	0.218 \| good
2025-12-08T03:00:00.000Z	33 \| good	6.209 \| good	27.155 \| good	7.898 \| good	1.219 \| good	15.411 \| good	0.248 \| good
2025-12-08T04:00:00.000Z	27 \| good	5.42 \| good	23.425 \| good	8.56 \| good	1.337 \| good	15.859 \| good	0.259 \| good
2025-12-08T05:00:00.000Z	33 \| good	6.213 \| good	27.325 \| good	7.363 \| good	1.456 \| good	16.307 \| good	0.27 \| good
2025-12-08T06:00:00.000Z	33 \| good	6.235 \| good	27.37 \| good	7.954 \| good	1.574 \| good	16.755 \| good	0.281 \| good
2025-12-08T07:00:00.000Z	49 \| good	8.543 \| good	37.249 \| good	8.434 \| good	1.568 \| good	16.517 \| good	0.295 \| good
2025-12-08T08:00:00.000Z	52 \| moderate	10.233 \| good	45.633 \| good	7.843 \| good	1.561 \| good	16.279 \| good	0.309 \| good
2025-12-08T09:00:00.000Z	54 \| moderate	11.293 \| good	49.86 \| good	9.967 \| good	1.555 \| good	16.041 \| good	0.322 \| good
2025-12-08T10:00:00.000Z	54 \| moderate	11.082 \| good	48.827 \| good	10.464 \| good	1.463 \| good	15.249 \| good	0.321 \| good
2025-12-08T11:00:00.000Z	52 \| moderate	10.292 \| good	45.75 \| good	11.438 \| good	1.371 \| good	14.457 \| good	0.32 \| good
2025-12-08T12:00:00.000Z	62 \| moderate	15.32 \| fine	67.743 \| fine	12.849 \| good	1.278 \| good	13.665 \| good	0.319 \| good
2025-12-08T13:00:00.000Z	62 \| moderate	15.31 \| fine	68.16 \| fine	12.905 \| good	1.286 \| good	13.125 \| good	0.323 \| good
2025-12-08T14:00:00.000Z	64 \| moderate	16.433 \| fine	72.411 \| fine	11.827 \| good	1.293 \| good	12.584 \| good	0.328 \| good
2025-12-08T15:00:00.000Z	60 \| moderate	14.332 \| fine	64.297 \| fine	12.538 \| good	1.301 \| good	12.043 \| good	0.332 \| good
2025-12-08T16:00:00.000Z	54 \| moderate	11.055 \| good	48.673 \| good	10.393 \| good	1.501 \| good	11.362 \| good	0.306 \| good
2025-12-08T17:00:00.000Z	49 \| good	8.885 \| good	38.88 \| good	11.368 \| good	1.702 \| good	10.682 \| good	0.279 \| good
2025-12-08T18:00:00.000Z	44 \| good	7.547 \| good	33.075 \| good	12.895 \| good	1.903 \| good	10.001 \| good	0.252 \| good
2025-12-08T19:00:00.000Z	38 \| good	6.791 \| good	29.748 \| good	14.046 \| good	1.803 \| good	8.434 \| good	0.221 \| good
2025-12-08T20:00:00.000Z	38 \| good	6.944 \| good	30.546 \| good	16.407 \| good	1.704 \| good	6.867 \| good	0.19 \| good
2025-12-08T21:00:00.000Z	49 \| good	8.744 \| good	38.619 \| good	17.222 \| good	1.604 \| good	5.299 \| good	0.159 \| good
2025-12-08T22:00:00.000Z	49 \| good	8.51 \| good	36.861 \| good	16.538 \| good	1.484 \| good	5.69 \| good	0.158 \| good
2025-12-08T23:00:00.000Z	52 \| moderate	9.864 \| good	43.609 \| good	16.118 \| good	1.365 \| good	6.08 \| good	0.156 \| good
2025-12-09T00:00:00.000Z	44 \| good	8.19 \| good	36.242 \| good	11.493 \| good	1.245 \| good	6.471 \| good	0.154 \| good
2025-12-09T01:00:00.000Z	44 \| good	8.437 \| good	37.057 \| good	8 \| good	1.205 \| good	9.406 \| good	0.186 \| good
2025-12-09T02:00:00.000Z	49 \| good	8.564 \| good	37.222 \| good	6.897 \| good	1.165 \| good	12.342 \| good	0.218 \| good
2025-12-09T03:00:00.000Z	44 \| good	8.469 \| good	37.176 \| good	7.631 \| good	1.126 \| good	15.278 \| good	0.25 \| good
2025-12-09T04:00:00.000Z	38 \| good	7.399 \| good	32.213 \| good	7.6 \| good	1.209 \| good	15.219 \| good	0.256 \| good
2025-12-09T05:00:00.000Z	33 \| good	5.538 \| good	23.616 \| good	8.13 \| good	1.291 \| good	15.16 \| good	0.261 \| good
2025-12-09T06:00:00.000Z	22 \| good	4.315 \| good	18.538 \| good	8.448 \| good	1.374 \| good	15.102 \| good	0.267 \| good
2025-12-09T07:00:00.000Z	27 \| good	5.201 \| good	22.638 \| good	7.911 \| good	1.332 \| good	15.001 \| good	0.272 \| good
2025-12-09T08:00:00.000Z	27 \| good	4.638 \| good	20.42 \| good	10.113 \| good	1.29 \| good	14.9 \| good	0.277 \| good
2025-12-09T09:00:00.000Z	33 \| good	6.018 \| good	26.441 \| good	11.587 \| good	1.248 \| good	14.799 \| good	0.282 \| good
2025-12-09T10:00:00.000Z	27 \| good	4.956 \| good	21.624 \| good	13.556 \| good	1.161 \| good	13.895 \| good	0.271 \| good
2025-12-09T11:00:00.000Z	16 \| good	2.772 \| good	11.701 \| good	13.348 \| good	1.074 \| good	12.991 \| good	0.261 \| good
2025-12-09T12:00:00.000Z	22 \| good	4.14 \| good	18.526 \| good	14.031 \| good	0.987 \| good	12.087 \| good	0.25 \| good
2025-12-09T13:00:00.000Z	27 \| good	5.017 \| good	21.68 \| good	13.394 \| good	1.046 \| good	12.211 \| good	0.256 \| good
2025-12-09T14:00:00.000Z	27 \| good	5.465 \| good	23.606 \| good	13.675 \| good	1.104 \| good	12.334 \| good	0.262 \| good
2025-12-09T15:00:00.000Z	27 \| good	5.487 \| good	23.773 \| good	14.482 \| good	1.163 \| good	12.458 \| good	0.268 \| good
2025-12-09T16:00:00.000Z	22 \| good	3.661 \| good	15.691 \| good	12.673 \| good	1.138 \| good	10.88 \| good	0.258 \| good
2025-12-09T17:00:00.000Z	11 \| good	1.622 \| good	6.833 \| good	11.238 \| good	1.114 \| good	9.302 \| good	0.248 \| good
2025-12-09T18:00:00.000Z	16 \| good	3.107 \| good	13.57 \| good	10.651 \| good	1.089 \| good	7.724 \| good	0.238 \| good
2025-12-09T19:00:00.000Z	11 \| good	2.4 \| good	9.897 \| good	11.921 \| good	1.08 \| good	6.511 \| good	0.205 \| good
2025-12-09T20:00:00.000Z	12 \| good	1.212 \| good	4.974 \| good	12.862 \| good	1.07 \| good	5.298 \| good	0.171 \| good
2025-12-09T21:00:00.000Z	12 \| good	1.921 \| good	7.952 \| good	13.385 \| good	1.061 \| good	4.085 \| good	0.138 \| good
2025-12-09T22:00:00.000Z	16 \| good	3.489 \| good	15.637 \| good	13.964 \| good	1.009 \| good	4.809 \| good	0.137 \| good
2025-12-09T23:00:00.000Z	38 \| good	6.989 \| good	30.773 \| good	12.611 \| good	0.958 \| good	5.533 \| good	0.136 \| good
2025-12-10T00:00:00.000Z	44 \| good	7.925 \| good	9.879 \| good	26.005 \| good	0.895 \| good	6.151 \| good	0.135 \| good
2025-12-10T01:00:00.000Z	27 \| good	5.214 \| good	22.699 \| good	12.263 \| good	0.984 \| good	9.794 \| good	0.176 \| good

San Anselmo

Empower business decisions with accurate air quality data

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

0.40ppm

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 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 03:00:00 on 2025-12-07.

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 12:00:00 on 2025-12-08.

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

The real-time air quality index in San Anselmo, California is 44, 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 8.427 μg/m³.

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

The current PM₁₀ levels in San Anselmo, California are 38.436 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 0.316 ppm.

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

The current sulfur dioxide (SO₂) levels in San Anselmo, California are 0.267 ppb.

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

The current ozone (O₃) levels at San Anselmo, California is 13.076 ppm.

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

The current nitrogen dioxide (NO₂) levels at San Anselmo, California is 4.776 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-06T02:00:00.000Z	60 \| moderate	13.803 \| fine	62.739 \| fine	13.038 \| good	0.32 \| good	9.87 \| good	0.316 \| good
2025-12-06T03:00:00.000Z	60 \| moderate	13.898 \| fine	63.17 \| fine	11.605 \| good	0.309 \| good	10.947 \| good	0.409 \| good
2025-12-06T04:00:00.000Z	64 \| moderate	15.948 \| fine	72.045 \| fine	10.351 \| good	0.332 \| good	11.292 \| good	0.424 \| good
2025-12-06T05:00:00.000Z	69 \| moderate	19.425 \| fine	85.994 \| fine	9.432 \| good	0.437 \| good	11.256 \| good	0.432 \| good
2025-12-06T06:00:00.000Z	71 \| moderate	20.046 \| fine	88.009 \| fine	9.432 \| good	0.374 \| good	10.489 \| good	0.418 \| good
2025-12-06T07:00:00.000Z	69 \| moderate	19.167 \| fine	84.495 \| fine	9.534 \| good	0.383 \| good	10.226 \| good	0.418 \| good
2025-12-06T08:00:00.000Z	67 \| moderate	17.877 \| fine	78.714 \| fine	11.29 \| good	0.362 \| good	7.836 \| good	0.328 \| good
2025-12-06T09:00:00.000Z	67 \| moderate	17.877 \| fine	78.714 \| fine	11.29 \| good	0.391 \| good	7.261 \| good	0.299 \| good
2025-12-06T10:00:00.000Z	67 \| moderate	18.055 \| fine	79.044 \| fine	11.415 \| good	0.95 \| good	4.819 \| good	0.42 \| good
2025-12-06T11:00:00.000Z	53 \| moderate	9.142 \| good	60.076 \| fine	11.919 \| good	0.874 \| good	4.803 \| good	0.378 \| good
2025-12-06T12:00:00.000Z	64 \| moderate	15.991 \| fine	65.081 \| fine	13.31 \| good	0.338 \| good	9.28 \| good	0.384 \| good
2025-12-06T13:00:00.000Z	62 \| moderate	14.885 \| fine	66.237 \| fine	13.643 \| good	0.339 \| good	4.846 \| good	0.302 \| good
2025-12-06T14:00:00.000Z	71 \| moderate	20.232 \| fine	88.72 \| fine	11.086 \| good	0.502 \| good	6.923 \| good	0.306 \| good
2025-12-06T15:00:00.000Z	81 \| moderate	24.554 \| fine	108.135 \| fine	12.03 \| good	0.422 \| good	7.163 \| good	0.312 \| good
2025-12-06T16:00:00.000Z	81 \| moderate	24.804 \| fine	107.544 \| fine	11.673 \| good	0.408 \| good	7.013 \| good	0.314 \| good
2025-12-06T17:00:00.000Z	77 \| moderate	22.562 \| fine	98.904 \| fine	12.688 \| good	0.484 \| good	6.079 \| good	0.318 \| good
2025-12-06T18:00:00.000Z	73 \| moderate	20.763 \| fine	92.145 \| fine	11.908 \| good	0.567 \| good	5.232 \| good	0.312 \| good
2025-12-06T19:00:00.000Z	66 \| moderate	17.471 \| fine	76.384 \| fine	12.035 \| good	0.53 \| good	4.97 \| good	0.316 \| good
2025-12-06T20:00:00.000Z	64 \| moderate	15.55 \| fine	70.53 \| fine	12.876 \| good	0.519 \| good	4.34 \| good	0.316 \| good
2025-12-06T21:00:00.000Z	58 \| moderate	13.071 \| fine	58.426 \| fine	13.817 \| good	0.54 \| good	3.807 \| good	0.316 \| good
2025-12-06T22:00:00.000Z	52 \| moderate	10.14 \| good	44.948 \| good	13.959 \| good	0.496 \| good	3.78 \| good	0.316 \| good
2025-12-06T23:00:00.000Z	52 \| moderate	9.977 \| good	44.387 \| good	14.061 \| good	0.391 \| good	4.048 \| good	0.4 \| good
2025-12-07T00:00:00.000Z	49 \| good	9.482 \| good	38.124 \| good	13.979 \| good	0.381 \| good	5.607 \| good	0.4 \| good
2025-12-07T01:00:00.000Z	52 \| moderate	10.304 \| good	45.598 \| good	13.078 \| good	0.33 \| good	4.892 \| good	0.402 \| good
2025-12-07T02:00:00.000Z	52 \| moderate	9.637 \| good	41.875 \| good	12.994 \| good	0.244 \| good	5.104 \| good	0.316 \| good
2025-12-07T03:00:00.000Z	56 \| moderate	12.322 \| fine	55.58 \| fine	11.967 \| good	0.262 \| good	6.267 \| good	0.318 \| good
2025-12-07T04:00:00.000Z	60 \| moderate	13.774 \| fine	61.959 \| fine	11.847 \| good	0.285 \| good	7.268 \| good	0.406 \| good
2025-12-07T05:00:00.000Z	62 \| moderate	14.944 \| fine	65.95 \| fine	11.767 \| good	0.225 \| good	7.156 \| good	0.408 \| good
2025-12-07T06:00:00.000Z	58 \| moderate	13.406 \| fine	60.675 \| fine	10.815 \| good	0.224 \| good	6.749 \| good	0.406 \| good
2025-12-07T07:00:00.000Z	60 \| moderate	13.644 \| fine	60.519 \| fine	10.716 \| good	0.227 \| good	6.749 \| good	0.406 \| good
2025-12-07T08:00:00.000Z	60 \| moderate	14.147 \| fine	62.947 \| fine	10.833 \| good	0.21 \| good	6.739 \| good	0.41 \| good
2025-12-07T09:00:00.000Z	60 \| moderate	14.253 \| fine	64.598 \| fine	10.847 \| good	0.263 \| good	6.551 \| good	0.398 \| good
2025-12-07T10:00:00.000Z	60 \| moderate	13.819 \| fine	62.708 \| fine	10.794 \| good	0.475 \| good	3.824 \| good	0.252 \| good
2025-12-07T11:00:00.000Z	62 \| moderate	15.276 \| fine	73.908 \| fine	10.961 \| good	0.505 \| good	3.337 \| good	0.252 \| good
2025-12-07T12:00:00.000Z	67 \| moderate	18.224 \| fine	84.192 \| fine	8.053 \| good	0.35 \| good	2.716 \| good	0.202 \| good
2025-12-07T13:00:00.000Z	73 \| moderate	20.827 \| fine	92.204 \| fine	11.629 \| good	0.302 \| good	6.156 \| good	0.296 \| good
2025-12-07T14:00:00.000Z	75 \| moderate	22.357 \| fine	99.457 \| fine	11.676 \| good	0.347 \| good	5.722 \| good	0.312 \| good
2025-12-07T15:00:00.000Z	82 \| moderate	25.981 \| fine	113.499 \| fine	11.175 \| good	0.325 \| good	5.906 \| good	0.306 \| good
2025-12-07T16:00:00.000Z	81 \| moderate	25.237 \| fine	108.485 \| fine	10.954 \| good	0.261 \| good	6.382 \| good	0.306 \| good
2025-12-07T17:00:00.000Z	79 \| moderate	24.481 \| fine	107.042 \| fine	10.175 \| good	0.284 \| good	6.597 \| good	0.306 \| good
2025-12-07T18:00:00.000Z	77 \| moderate	23.383 \| fine	101.48 \| fine	11.03 \| good	0.3 \| good	6.184 \| good	0.318 \| good
2025-12-07T19:00:00.000Z	71 \| moderate	20.181 \| fine	88.283 \| fine	12.855 \| good	0.33 \| good	4.687 \| good	0.318 \| good
2025-12-07T20:00:00.000Z	69 \| moderate	18.568 \| fine	81.31 \| fine	12.896 \| good	0.312 \| good	4.387 \| good	0.316 \| good
2025-12-07T21:00:00.000Z	64 \| moderate	16.265 \| fine	72.478 \| fine	12.136 \| good	0.396 \| good	5.345 \| good	0.314 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	16.594 \| fine	74.117 \| fine	13.035 \| good	0.33 \| good	3.235 \| good	0.312 \| good
2025-12-07T23:00:00.000Z	56 \| moderate	11.916 \| good	52.987 \| good	13.977 \| good	0.284 \| good	3 \| good	0.312 \| good
2025-12-08T00:00:00.000Z	52 \| moderate	10.325 \| good	46.767 \| good	13.954 \| good	0.341 \| good	3.704 \| good	0.312 \| good
2025-12-08T01:00:00.000Z	44 \| good	8.427 \| good	38.436 \| good	13.076 \| good	0.267 \| good	4.776 \| good	0.316 \| good
2025-12-08T01:00:00.000Z	44 \| good	8.427 \| good	38.436 \| good	13.076 \| good	0.267 \| good	4.776 \| good	0.316 \| good
2025-12-08T02:00:00.000Z	27 \| good	5.311 \| good	22.496 \| good	10.012 \| good	1.195 \| good	12.91 \| good	0.218 \| good
2025-12-08T03:00:00.000Z	33 \| good	6.209 \| good	27.155 \| good	7.898 \| good	1.219 \| good	15.411 \| good	0.248 \| good
2025-12-08T04:00:00.000Z	27 \| good	5.42 \| good	23.425 \| good	8.56 \| good	1.337 \| good	15.859 \| good	0.259 \| good
2025-12-08T05:00:00.000Z	33 \| good	6.213 \| good	27.325 \| good	7.363 \| good	1.456 \| good	16.307 \| good	0.27 \| good
2025-12-08T06:00:00.000Z	33 \| good	6.235 \| good	27.37 \| good	7.954 \| good	1.574 \| good	16.755 \| good	0.281 \| good
2025-12-08T07:00:00.000Z	49 \| good	8.543 \| good	37.249 \| good	8.434 \| good	1.568 \| good	16.517 \| good	0.295 \| good
2025-12-08T08:00:00.000Z	52 \| moderate	10.233 \| good	45.633 \| good	7.843 \| good	1.561 \| good	16.279 \| good	0.309 \| good
2025-12-08T09:00:00.000Z	54 \| moderate	11.293 \| good	49.86 \| good	9.967 \| good	1.555 \| good	16.041 \| good	0.322 \| good
2025-12-08T10:00:00.000Z	54 \| moderate	11.082 \| good	48.827 \| good	10.464 \| good	1.463 \| good	15.249 \| good	0.321 \| good
2025-12-08T11:00:00.000Z	52 \| moderate	10.292 \| good	45.75 \| good	11.438 \| good	1.371 \| good	14.457 \| good	0.32 \| good
2025-12-08T12:00:00.000Z	62 \| moderate	15.32 \| fine	67.743 \| fine	12.849 \| good	1.278 \| good	13.665 \| good	0.319 \| good
2025-12-08T13:00:00.000Z	62 \| moderate	15.31 \| fine	68.16 \| fine	12.905 \| good	1.286 \| good	13.125 \| good	0.323 \| good
2025-12-08T14:00:00.000Z	64 \| moderate	16.433 \| fine	72.411 \| fine	11.827 \| good	1.293 \| good	12.584 \| good	0.328 \| good
2025-12-08T15:00:00.000Z	60 \| moderate	14.332 \| fine	64.297 \| fine	12.538 \| good	1.301 \| good	12.043 \| good	0.332 \| good
2025-12-08T16:00:00.000Z	54 \| moderate	11.055 \| good	48.673 \| good	10.393 \| good	1.501 \| good	11.362 \| good	0.306 \| good
2025-12-08T17:00:00.000Z	49 \| good	8.885 \| good	38.88 \| good	11.368 \| good	1.702 \| good	10.682 \| good	0.279 \| good
2025-12-08T18:00:00.000Z	44 \| good	7.547 \| good	33.075 \| good	12.895 \| good	1.903 \| good	10.001 \| good	0.252 \| good
2025-12-08T19:00:00.000Z	38 \| good	6.791 \| good	29.748 \| good	14.046 \| good	1.803 \| good	8.434 \| good	0.221 \| good
2025-12-08T20:00:00.000Z	38 \| good	6.944 \| good	30.546 \| good	16.407 \| good	1.704 \| good	6.867 \| good	0.19 \| good
2025-12-08T21:00:00.000Z	49 \| good	8.744 \| good	38.619 \| good	17.222 \| good	1.604 \| good	5.299 \| good	0.159 \| good
2025-12-08T22:00:00.000Z	49 \| good	8.51 \| good	36.861 \| good	16.538 \| good	1.484 \| good	5.69 \| good	0.158 \| good
2025-12-08T23:00:00.000Z	52 \| moderate	9.864 \| good	43.609 \| good	16.118 \| good	1.365 \| good	6.08 \| good	0.156 \| good
2025-12-09T00:00:00.000Z	44 \| good	8.19 \| good	36.242 \| good	11.493 \| good	1.245 \| good	6.471 \| good	0.154 \| good
2025-12-09T01:00:00.000Z	44 \| good	8.437 \| good	37.057 \| good	8 \| good	1.205 \| good	9.406 \| good	0.186 \| good
2025-12-09T02:00:00.000Z	49 \| good	8.564 \| good	37.222 \| good	6.897 \| good	1.165 \| good	12.342 \| good	0.218 \| good
2025-12-09T03:00:00.000Z	44 \| good	8.469 \| good	37.176 \| good	7.631 \| good	1.126 \| good	15.278 \| good	0.25 \| good
2025-12-09T04:00:00.000Z	38 \| good	7.399 \| good	32.213 \| good	7.6 \| good	1.209 \| good	15.219 \| good	0.256 \| good
2025-12-09T05:00:00.000Z	33 \| good	5.538 \| good	23.616 \| good	8.13 \| good	1.291 \| good	15.16 \| good	0.261 \| good
2025-12-09T06:00:00.000Z	22 \| good	4.315 \| good	18.538 \| good	8.448 \| good	1.374 \| good	15.102 \| good	0.267 \| good
2025-12-09T07:00:00.000Z	27 \| good	5.201 \| good	22.638 \| good	7.911 \| good	1.332 \| good	15.001 \| good	0.272 \| good
2025-12-09T08:00:00.000Z	27 \| good	4.638 \| good	20.42 \| good	10.113 \| good	1.29 \| good	14.9 \| good	0.277 \| good
2025-12-09T09:00:00.000Z	33 \| good	6.018 \| good	26.441 \| good	11.587 \| good	1.248 \| good	14.799 \| good	0.282 \| good
2025-12-09T10:00:00.000Z	27 \| good	4.956 \| good	21.624 \| good	13.556 \| good	1.161 \| good	13.895 \| good	0.271 \| good
2025-12-09T11:00:00.000Z	16 \| good	2.772 \| good	11.701 \| good	13.348 \| good	1.074 \| good	12.991 \| good	0.261 \| good
2025-12-09T12:00:00.000Z	22 \| good	4.14 \| good	18.526 \| good	14.031 \| good	0.987 \| good	12.087 \| good	0.25 \| good
2025-12-09T13:00:00.000Z	27 \| good	5.017 \| good	21.68 \| good	13.394 \| good	1.046 \| good	12.211 \| good	0.256 \| good
2025-12-09T14:00:00.000Z	27 \| good	5.465 \| good	23.606 \| good	13.675 \| good	1.104 \| good	12.334 \| good	0.262 \| good
2025-12-09T15:00:00.000Z	27 \| good	5.487 \| good	23.773 \| good	14.482 \| good	1.163 \| good	12.458 \| good	0.268 \| good
2025-12-09T16:00:00.000Z	22 \| good	3.661 \| good	15.691 \| good	12.673 \| good	1.138 \| good	10.88 \| good	0.258 \| good
2025-12-09T17:00:00.000Z	11 \| good	1.622 \| good	6.833 \| good	11.238 \| good	1.114 \| good	9.302 \| good	0.248 \| good
2025-12-09T18:00:00.000Z	16 \| good	3.107 \| good	13.57 \| good	10.651 \| good	1.089 \| good	7.724 \| good	0.238 \| good
2025-12-09T19:00:00.000Z	11 \| good	2.4 \| good	9.897 \| good	11.921 \| good	1.08 \| good	6.511 \| good	0.205 \| good
2025-12-09T20:00:00.000Z	12 \| good	1.212 \| good	4.974 \| good	12.862 \| good	1.07 \| good	5.298 \| good	0.171 \| good
2025-12-09T21:00:00.000Z	12 \| good	1.921 \| good	7.952 \| good	13.385 \| good	1.061 \| good	4.085 \| good	0.138 \| good
2025-12-09T22:00:00.000Z	16 \| good	3.489 \| good	15.637 \| good	13.964 \| good	1.009 \| good	4.809 \| good	0.137 \| good
2025-12-09T23:00:00.000Z	38 \| good	6.989 \| good	30.773 \| good	12.611 \| good	0.958 \| good	5.533 \| good	0.136 \| good
2025-12-10T00:00:00.000Z	44 \| good	7.925 \| good	9.879 \| good	26.005 \| good	0.895 \| good	6.151 \| good	0.135 \| good
2025-12-10T01:00:00.000Z	27 \| good	5.214 \| good	22.699 \| good	12.263 \| good	0.984 \| good	9.794 \| good	0.176 \| 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?