What is the current concentration of PM10 in Larkspur, California?

The current PM10 concentration at Larkspur, California is 27.873 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Larkspur, California?

The current sulfur dioxide (SO2) concentration at Larkspur, California is 0.496 ppb.

What is the current concentration of ozone (O3) in Larkspur, California?

The current ozone (O3) concentration at Larkspur, California is 28.444 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Larkspur, California?

The current nitrogen dioxide (NO2) concentration at Larkspur, California is 3.526 ppb.

Larkspur, California live air quality index now

Q: What is the current concentration of PM2.5 in Larkspur, California?

The current PM2.5 concentration at Larkspur, California is 7.243 μg/m3.

Stay updated with real-time air quality in Larkspur, 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

Larkspur, California

Last updated: ... (Local time)

Major air pollutants in Larkspur, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.24 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

27.87 μg/m³

155

255

425

605+

Ozone (O₃)

28.44 ppb

201

201+

Sulfur Dioxide (SO₂)

0.50 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.53 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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

Please contact us for custom requests

Larkspur, California

Scroll To Air Quality Map

Track live Larkspur, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T00:00:00.000Z	31 \| good	2.313 \| good	9.486 \| good	33.42 \| good	0.335 \| good	1.07 \| good	0.307 \| good
2026-03-08T01:00:00.000Z	31 \| good	2.402 \| good	13.756 \| good	33.512 \| good	0.344 \| good	1.091 \| good	0.319 \| good
2026-03-08T02:00:00.000Z	29 \| good	2.721 \| good	13.094 \| good	30.96 \| good	0.347 \| good	5.142 \| good	0.199 \| good
2026-03-08T03:00:00.000Z	28 \| good	3.826 \| good	16.495 \| good	30.183 \| good	0.79 \| good	21.036 \| good	0.264 \| good
2026-03-08T04:00:00.000Z	26 \| good	2.258 \| good	10.774 \| good	27.767 \| good	0.541 \| good	11.715 \| good	0.316 \| good
2026-03-08T05:00:00.000Z	22 \| good	4.246 \| good	21.086 \| good	21.738 \| good	0.604 \| good	13.949 \| good	0.363 \| good
2026-03-08T06:00:00.000Z	16 \| good	2.8 \| good	12.1 \| good	15.301 \| good	0.621 \| good	13.957 \| good	0.376 \| good
2026-03-08T07:00:00.000Z	16 \| good	2.811 \| good	12.156 \| good	15.912 \| good	0.62 \| good	14.553 \| good	0.383 \| good
2026-03-08T08:00:00.000Z	22 \| good	3.72 \| good	16.162 \| good	13.891 \| good	0.544 \| good	16.468 \| good	0.377 \| good
2026-03-08T09:00:00.000Z	22 \| good	3.72 \| good	16.162 \| good	13.096 \| good	0.548 \| good	17.418 \| good	0.433 \| good
2026-03-08T10:00:00.000Z	22 \| good	3.778 \| good	15.995 \| good	12.841 \| good	0.341 \| good	5.942 \| good	0.227 \| good
2026-03-08T11:00:00.000Z	38 \| good	7.099 \| good	19.171 \| good	11.941 \| good	0.37 \| good	10.928 \| good	0.2 \| good
2026-03-08T12:00:00.000Z	49 \| good	8.588 \| good	16.27 \| good	11.684 \| good	0.144 \| good	7.967 \| good	0.624 \| good
2026-03-08T13:00:00.000Z	16 \| good	2.959 \| good	12.61 \| good	8.291 \| good	0.558 \| good	11.495 \| good	0.462 \| good
2026-03-08T14:00:00.000Z	22 \| good	3.606 \| good	15.793 \| good	8.122 \| good	0.508 \| good	11.704 \| good	0.363 \| good
2026-03-08T15:00:00.000Z	22 \| good	4.266 \| good	19.25 \| good	8.6 \| good	0.559 \| good	13.306 \| good	0.46 \| good
2026-03-08T16:00:00.000Z	27 \| good	5.109 \| good	23.063 \| good	8.025 \| good	0.581 \| good	12.216 \| good	0.524 \| good
2026-03-08T17:00:00.000Z	27 \| good	5.47 \| good	23.973 \| good	9.848 \| good	1.207 \| good	9.31 \| good	0.442 \| good
2026-03-08T18:00:00.000Z	33 \| good	6.413 \| good	28.418 \| good	12.028 \| good	1.442 \| good	8.762 \| good	0.384 \| good
2026-03-08T19:00:00.000Z	38 \| good	7.33 \| good	32.478 \| good	14.084 \| good	1.428 \| good	8.584 \| good	0.371 \| good
2026-03-08T20:00:00.000Z	38 \| good	7.447 \| good	33.262 \| good	19.772 \| good	1.352 \| good	7.234 \| good	0.363 \| good
2026-03-08T21:00:00.000Z	44 \| good	7.688 \| good	34.47 \| good	21.009 \| good	0.918 \| good	6.36 \| good	0.294 \| good
2026-03-08T22:00:00.000Z	38 \| good	6.64 \| good	29.417 \| good	31.63 \| good	0.671 \| good	4.125 \| good	0.204 \| good
2026-03-08T23:00:00.000Z	31 \| good	4.835 \| good	21.35 \| good	34.044 \| good	0.734 \| good	3.229 \| good	0.201 \| good
2026-03-09T00:00:00.000Z	33 \| good	5.672 \| good	25.322 \| good	34.932 \| good	0.511 \| good	3.889 \| good	0.221 \| good
2026-03-09T01:00:00.000Z	38 \| good	6.749 \| good	30.117 \| good	34.155 \| good	0.498 \| good	3.918 \| good	0.221 \| good
2026-03-09T02:00:00.000Z	38 \| good	7.271 \| good	32.024 \| good	34.553 \| good	0.605 \| good	5.39 \| good	0.219 \| good
2026-03-09T03:00:00.000Z	58 \| moderate	12.568 \| fine	56.958 \| fine	36.005 \| good	1.117 \| good	16.371 \| good	0.232 \| good
2026-03-09T04:00:00.000Z	49 \| good	8.511 \| good	37.633 \| good	30.955 \| good	0.511 \| good	7.984 \| good	0.288 \| good
2026-03-09T05:00:00.000Z	44 \| good	7.917 \| good	35.208 \| good	26.583 \| good	0.521 \| good	8.044 \| good	0.266 \| good
2026-03-09T06:00:00.000Z	38 \| good	6.734 \| good	29.778 \| good	19.459 \| good	0.401 \| good	6.746 \| good	0.266 \| good
2026-03-09T07:00:00.000Z	38 \| good	6.763 \| good	29.947 \| good	19.978 \| good	0.4 \| good	6.465 \| good	0.259 \| good
2026-03-09T08:00:00.000Z	44 \| good	7.822 \| good	34.836 \| good	18.529 \| good	0.343 \| good	4.713 \| good	0.262 \| good
2026-03-09T09:00:00.000Z	38 \| good	6.861 \| good	30.771 \| good	13.965 \| good	0.327 \| good	5.491 \| good	0.255 \| good
2026-03-09T10:00:00.000Z	33 \| good	5.686 \| good	25.171 \| good	14.291 \| good	0.307 \| good	3.972 \| good	0.255 \| good
2026-03-09T11:00:00.000Z	27 \| good	4.864 \| good	21.312 \| good	13.734 \| good	0.34 \| good	4.076 \| good	0.255 \| good
2026-03-09T12:00:00.000Z	33 \| good	5.76 \| good	25.271 \| good	13.673 \| good	0.3 \| good	3.976 \| good	0.255 \| good
2026-03-09T13:00:00.000Z	33 \| good	5.754 \| good	25.214 \| good	13.121 \| good	0.394 \| good	4.753 \| good	0.293 \| good
2026-03-09T14:00:00.000Z	22 \| good	3.874 \| good	16.766 \| good	7.119 \| good	0.53 \| good	11.244 \| good	0.473 \| good
2026-03-09T15:00:00.000Z	22 \| good	3.691 \| good	16.257 \| good	6.762 \| good	0.431 \| good	12.484 \| good	0.543 \| good
2026-03-09T16:00:00.000Z	27 \| good	5.06 \| good	22.299 \| good	7.539 \| good	0.492 \| good	11.394 \| good	0.459 \| good
2026-03-09T17:00:00.000Z	33 \| good	5.874 \| good	26.007 \| good	10.535 \| good	0.418 \| good	9.233 \| good	0.464 \| good
2026-03-09T18:00:00.000Z	38 \| good	6.97 \| good	31.071 \| good	11.387 \| good	0.401 \| good	6.746 \| good	0.348 \| good
2026-03-09T19:00:00.000Z	38 \| good	7.309 \| good	32.601 \| good	16.638 \| good	0.467 \| good	4.214 \| good	0.266 \| good
2026-03-09T20:00:00.000Z	38 \| good	7.374 \| good	32.966 \| good	17.762 \| good	0.991 \| good	3.748 \| good	0.256 \| good
2026-03-09T21:00:00.000Z	38 \| good	7.252 \| good	32.282 \| good	23.434 \| good	0.594 \| good	4.307 \| good	0.257 \| good
2026-03-09T22:00:00.000Z	44 \| good	7.569 \| good	30.225 \| good	27.778 \| good	0.501 \| good	3.597 \| good	0.259 \| good
2026-03-09T23:00:00.000Z	38 \| good	7.243 \| good	27.873 \| good	28.444 \| good	0.496 \| good	3.526 \| good	0.226 \| good
2026-03-10T00:00:00.000Z	31 \| good	4.269 \| good	18.659 \| good	34.445 \| good	0.667 \| good	2.449 \| good	0.139 \| good
2026-03-10T01:00:00.000Z	34 \| good	2.475 \| good	10.128 \| good	37.404 \| good	0.61 \| good	4.013 \| good	0.146 \| good
2026-03-10T02:00:00.000Z	38 \| good	6.799 \| good	30.157 \| good	37.834 \| good	0.552 \| good	5.577 \| good	0.153 \| good
2026-03-10T03:00:00.000Z	35 \| good	6.065 \| good	26.998 \| good	37.933 \| good	0.495 \| good	7.142 \| good	0.16 \| good
2026-03-10T04:00:00.000Z	36 \| good	5.234 \| good	22.693 \| good	39.03 \| good	0.491 \| good	7.718 \| good	0.163 \| good
2026-03-10T05:00:00.000Z	34 \| good	3.927 \| good	17.176 \| good	36.728 \| good	0.487 \| good	8.295 \| good	0.165 \| good
2026-03-10T06:00:00.000Z	33 \| good	3.09 \| good	13.403 \| good	36.273 \| good	0.484 \| good	8.872 \| good	0.168 \| good
2026-03-10T07:00:00.000Z	31 \| good	2.432 \| good	9.987 \| good	33.586 \| good	0.449 \| good	8.057 \| good	0.163 \| good
2026-03-10T08:00:00.000Z	31 \| good	2.025 \| good	8.131 \| good	33.035 \| good	0.414 \| good	7.242 \| good	0.159 \| good
2026-03-10T09:00:00.000Z	31 \| good	2.247 \| good	9.319 \| good	33.759 \| good	0.379 \| good	6.426 \| good	0.155 \| good
2026-03-10T10:00:00.000Z	31 \| good	2.477 \| good	10.193 \| good	34.144 \| good	0.372 \| good	5.78 \| good	0.151 \| good
2026-03-10T11:00:00.000Z	31 \| good	2.994 \| good	12.442 \| good	34.122 \| good	0.364 \| good	5.133 \| good	0.147 \| good
2026-03-10T12:00:00.000Z	31 \| good	2.464 \| good	9.741 \| good	32.509 \| good	0.356 \| good	4.486 \| good	0.143 \| good
2026-03-10T13:00:00.000Z	30 \| good	1.411 \| good	5.706 \| good	31.859 \| good	0.371 \| good	4.997 \| good	0.148 \| good
2026-03-10T14:00:00.000Z	29 \| good	1.088 \| good	4.425 \| good	30.88 \| good	0.385 \| good	5.508 \| good	0.153 \| good
2026-03-10T15:00:00.000Z	31 \| good	0.824 \| good	3.085 \| good	32.635 \| good	0.4 \| good	6.018 \| good	0.158 \| good
2026-03-10T16:00:00.000Z	36 \| good	1.274 \| good	4.935 \| good	38.975 \| good	0.441 \| good	4.866 \| good	0.154 \| good
2026-03-10T17:00:00.000Z	36 \| good	0.906 \| good	3.578 \| good	38.652 \| good	0.483 \| good	3.715 \| good	0.151 \| good
2026-03-10T18:00:00.000Z	32 \| good	1.764 \| good	7.142 \| good	34.58 \| good	0.525 \| good	2.563 \| good	0.148 \| good
2026-03-10T19:00:00.000Z	31 \| good	1.682 \| good	6.96 \| good	33.71 \| good	0.523 \| good	2.257 \| good	0.146 \| good
2026-03-10T20:00:00.000Z	31 \| good	1.853 \| good	7.543 \| good	34.107 \| good	0.521 \| good	1.952 \| good	0.144 \| good
2026-03-10T21:00:00.000Z	31 \| good	2.895 \| good	12.285 \| good	34.088 \| good	0.519 \| good	1.647 \| good	0.142 \| good
2026-03-10T22:00:00.000Z	32 \| good	3.224 \| good	14.074 \| good	35.356 \| good	0.494 \| good	1.665 \| good	0.14 \| good
2026-03-10T23:00:00.000Z	34 \| good	4.019 \| good	17.708 \| good	36.623 \| good	0.468 \| good	1.684 \| good	0.137 \| good
2026-03-11T00:00:00.000Z	34 \| good	4.098 \| good	18.08 \| good	37.242 \| good	0.442 \| good	1.702 \| good	0.135 \| good
2026-03-11T01:00:00.000Z	36 \| good	2.563 \| good	10.58 \| good	38.744 \| good	0.446 \| good	3.664 \| good	0.145 \| good
2026-03-11T02:00:00.000Z	33 \| good	6.251 \| good	27.68 \| good	34.465 \| good	0.45 \| good	5.625 \| good	0.156 \| good
2026-03-11T03:00:00.000Z	33 \| good	5.809 \| good	25.003 \| good	33.507 \| good	0.454 \| good	7.586 \| good	0.167 \| good
2026-03-11T04:00:00.000Z	33 \| good	6.118 \| good	27.18 \| good	32.837 \| good	0.482 \| good	8.017 \| good	0.176 \| good
2026-03-11T05:00:00.000Z	28 \| good	5.011 \| good	21.716 \| good	30.042 \| good	0.51 \| good	8.447 \| good	0.186 \| good
2026-03-11T06:00:00.000Z	44 \| good	7.635 \| good	9.252 \| good	29.724 \| good	0.53 \| good	8.733 \| good	0.195 \| good
2026-03-11T07:00:00.000Z	27 \| good	3.911 \| good	16.945 \| good	28.617 \| good	0.523 \| good	8.859 \| good	0.198 \| good
2026-03-11T08:00:00.000Z	27 \| good	2.338 \| good	9.497 \| good	29.068 \| good	0.508 \| good	8.84 \| good	0.201 \| good
2026-03-11T09:00:00.000Z	26 \| good	1.444 \| good	5.944 \| good	28.136 \| good	0.493 \| good	8.821 \| good	0.204 \| good
2026-03-11T10:00:00.000Z	22 \| good	4.195 \| good	18.149 \| good	21.202 \| good	0.477 \| good	8.589 \| good	0.199 \| good
2026-03-11T11:00:00.000Z	22 \| good	4.421 \| good	19.562 \| good	23.322 \| good	0.46 \| good	8.356 \| good	0.195 \| good
2026-03-11T12:00:00.000Z	44 \| good	8.393 \| good	10.017 \| good	22.527 \| good	0.443 \| good	8.047 \| good	0.189 \| good
2026-03-11T13:00:00.000Z	44 \| good	8.385 \| good	10.033 \| good	20.965 \| good	0.498 \| good	8.506 \| good	0.2 \| good
2026-03-11T14:00:00.000Z	49 \| good	8.837 \| good	10.487 \| good	19.402 \| good	0.554 \| good	8.965 \| good	0.21 \| good
2026-03-11T15:00:00.000Z	54 \| moderate	10.699 \| good	12.326 \| good	17.84 \| good	0.609 \| good	9.424 \| good	0.221 \| good
2026-03-11T16:00:00.000Z	54 \| moderate	11.446 \| good	12.954 \| good	21.716 \| good	0.824 \| good	8.423 \| good	0.211 \| good
2026-03-11T17:00:00.000Z	24 \| good	2.638 \| good	11.321 \| good	26.132 \| good	1.036 \| good	7.445 \| good	0.201 \| good
2026-03-11T18:00:00.000Z	49 \| good	9.02 \| good	10.661 \| good	29.467 \| good	1.253 \| good	6.422 \| good	0.19 \| good
2026-03-11T19:00:00.000Z	44 \| good	8.408 \| good	10.113 \| good	33.739 \| good	1.212 \| good	5.581 \| good	0.182 \| good
2026-03-11T20:00:00.000Z	44 \| good	8.358 \| good	10.178 \| good	38.012 \| good	1.172 \| good	4.741 \| good	0.175 \| good
2026-03-11T21:00:00.000Z	49 \| good	8.627 \| good	10.604 \| good	42.284 \| good	1.131 \| good	3.9 \| good	0.167 \| good
2026-03-11T22:00:00.000Z	49 \| good	8.747 \| good	10.826 \| good	42.273 \| good	1.009 \| good	3.763 \| good	0.164 \| good
2026-03-11T23:00:00.000Z	49 \| good	8.596 \| good	10.777 \| good	42.262 \| good	0.887 \| good	3.626 \| good	0.162 \| good

Larkspur

Get reliable air quality data to drive your business

Larkspur, California air quality map: Track AQI near you

0.31ppm

How accurate is California, USA air quality data?

Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

Air quality levels in US

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

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

Frequently asked questions

How often is the air quality data for Larkspur, California updated?

The air quality for Larkspur, California is updated every hour.

When was the worst air quality at Larkspur, California in the last 24 hrs?

The worst air quality in Larkspur, California in the last 24 hours was observed at 03:00:00 on 2026-03-09.

When was the best air quality at Larkspur, California in the last 24 hrs?

In the last 24 hrs, the best air quality in Larkspur, California was observed at 03:00:00 on 2026-03-09.

What is the current air quality in Larkspur, California?

The current air quality in Larkspur, California is 38, categorized as Good based on real-time data.

What pollutant is the most common in Larkspur, California?

The most common pollutant in Larkspur, California is PM2.5.

What should I do if the air quality in Larkspur, California is poor?

If the air quality in Larkspur, California is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Larkspur, California?

The current PM_2.5 concentration at Larkspur, California is 7.243 μg/m³.

What is the current concentration of PM₁₀ in Larkspur, California?

The current PM₁₀ concentration at Larkspur, California is 27.873 μg/m³.

What is the current concentration of carbon monoxide (CO) in Larkspur, California?

The current carbon monoxide (CO) concentration at Larkspur, California is 0.226 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Larkspur, California?

The current sulfur dioxide (SO₂) concentration at Larkspur, California is 0.496 ppb.

What is the current concentration of ozone (O₃) in Larkspur, California?

The current ozone (O₃) concentration at Larkspur, California is 28.444 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Larkspur, California?

The current nitrogen dioxide (NO₂) concentration at Larkspur, California is 3.526 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions