What is the current level of PM10 in San Marino, California?

San Marino, California currently has a PM10 concentration of 21.246 μg/m3.

What is the current level of sulfur dioxide (SO2) in San Marino, California?

The current sulfur dioxide (SO2) concentration in San Marino, California is 0.38 ppb.

What is the current level of ozone (O3) in San Marino, California?

San Marino, California currently has an ozone (O3) concentration of 29.008 ppm.

What is the current level of nitrogen dioxide (NO2) in San Marino, California?

The current level of nitrogen dioxide (NO2) in San Marino, California is 8.85 ppb.

Current air quality index in San Marino, California today

Q: What is the PM2.5 concentration in San Marino, California right now?

San Marino, California currently has a PM2.5 concentration of 6.813 μg/m3.

Stay updated with real-time air quality in San Marino, 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 Marino, California

Last updated: ... (Local time)

Common air pollutants in San Marino, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.81 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

21.25 μg/m³

155

255

425

605+

Ozone (O₃)

29.01 ppb

201

201+

Sulfur Dioxide (SO₂)

0.38 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.85 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 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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San Marino, California

Scroll To Air Quality Map

Track live San Marino, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-02-10T22:00:00.000Z	52 \| moderate	10.081 \| good	39.633 \| good	34.113 \| good	0.319 \| good	5.502 \| good	0.287 \| good
2026-02-10T23:00:00.000Z	49 \| good	8.741 \| good	41.472 \| good	33.05 \| good	0.272 \| good	4.445 \| good	0.241 \| good
2026-02-11T00:00:00.000Z	44 \| good	7.927 \| good	30.955 \| good	32.223 \| good	0.295 \| good	3.779 \| good	0.186 \| good
2026-02-11T01:00:00.000Z	44 \| good	7.907 \| good	31.628 \| good	33.095 \| good	0.278 \| good	4.497 \| good	0.216 \| good
2026-02-11T02:00:00.000Z	44 \| good	8.295 \| good	32.75 \| good	32.761 \| good	0.552 \| good	5.452 \| good	0.224 \| good
2026-02-11T03:00:00.000Z	49 \| good	8.575 \| good	27.89 \| good	31.69 \| good	0.354 \| good	5.35 \| good	0.201 \| good
2026-02-11T04:00:00.000Z	44 \| good	7.827 \| good	26.777 \| good	30.954 \| good	0.192 \| good	4.2 \| good	0.216 \| good
2026-02-11T05:00:00.000Z	38 \| good	7.382 \| good	25.797 \| good	30.954 \| good	0.521 \| good	3.66 \| good	0.201 \| good
2026-02-11T06:00:00.000Z	49 \| good	9.257 \| good	46.195 \| good	31.532 \| good	0.202 \| good	2.467 \| good	0.177 \| good
2026-02-11T07:00:00.000Z	33 \| good	6.069 \| good	24.785 \| good	31.228 \| good	0.2 \| good	2.467 \| good	0.177 \| good
2026-02-11T08:00:00.000Z	33 \| good	5.973 \| good	24.22 \| good	30.432 \| good	0.486 \| good	2.444 \| good	0.186 \| good
2026-02-11T09:00:00.000Z	38 \| good	6.744 \| good	26.807 \| good	31.908 \| good	0.2 \| good	2.907 \| good	0.116 \| good
2026-02-11T10:00:00.000Z	29 \| good	4.459 \| good	14.633 \| good	31.43 \| good	0.49 \| good	4.343 \| good	0.177 \| good
2026-02-11T11:00:00.000Z	29 \| good	3.426 \| good	10.372 \| good	30.785 \| good	0.373 \| good	1.553 \| good	0.1 \| good
2026-02-11T12:00:00.000Z	31 \| good	2.635 \| good	10.214 \| good	32.888 \| good	0.193 \| good	2.46 \| good	0.177 \| good
2026-02-11T13:00:00.000Z	31 \| good	2.383 \| good	10.28 \| good	32.888 \| good	0.194 \| good	2.46 \| good	0.177 \| good
2026-02-11T14:00:00.000Z	29 \| good	1.287 \| good	6.454 \| good	30.804 \| good	0.518 \| good	3.383 \| good	0.215 \| good
2026-02-11T15:00:00.000Z	30 \| good	2.267 \| good	7.825 \| good	31.823 \| good	0.505 \| good	4.293 \| good	0.267 \| good
2026-02-11T16:00:00.000Z	30 \| good	2.089 \| good	11.645 \| good	31.531 \| good	0.245 \| good	5.04 \| good	0.314 \| good
2026-02-11T17:00:00.000Z	31 \| good	2.716 \| good	8.872 \| good	32.516 \| good	0.257 \| good	6.254 \| good	0.293 \| good
2026-02-11T18:00:00.000Z	31 \| good	2.572 \| good	9.448 \| good	34.152 \| good	0.19 \| good	4.811 \| good	0.247 \| good
2026-02-11T19:00:00.000Z	35 \| good	3.251 \| good	11.395 \| good	37.745 \| good	0.209 \| good	2.87 \| good	0.186 \| good
2026-02-11T20:00:00.000Z	34 \| good	3.012 \| good	10.299 \| good	37.345 \| good	0.208 \| good	2.913 \| good	0.255 \| good
2026-02-11T21:00:00.000Z	34 \| good	3.188 \| good	9.886 \| good	37.399 \| good	0.313 \| good	3.047 \| good	0.207 \| good
2026-02-11T22:00:00.000Z	34 \| good	3.064 \| good	10.306 \| good	36.846 \| good	0.277 \| good	3.891 \| good	0.217 \| good
2026-02-11T23:00:00.000Z	34 \| good	5.754 \| good	7.446 \| good	37.484 \| good	0.289 \| good	5.237 \| good	0.202 \| good
2026-02-12T00:00:00.000Z	32 \| good	4.49 \| good	15.288 \| good	35.208 \| good	0.251 \| good	5.739 \| good	0.244 \| good
2026-02-12T01:00:00.000Z	31 \| good	3.083 \| good	13.153 \| good	33.573 \| good	0.248 \| good	4.185 \| good	0.244 \| good
2026-02-12T02:00:00.000Z	30 \| good	3.742 \| good	16.532 \| good	31.882 \| good	0.26 \| good	6.691 \| good	0.262 \| good
2026-02-12T03:00:00.000Z	29 \| good	4.406 \| good	16.974 \| good	30.678 \| good	0.242 \| good	6.594 \| good	0.3 \| good
2026-02-12T04:00:00.000Z	27 \| good	5.091 \| good	15.779 \| good	26.762 \| good	0.321 \| good	9.469 \| good	0.298 \| good
2026-02-12T05:00:00.000Z	22 \| good	4.342 \| good	21.89 \| good	19.171 \| good	0.228 \| good	17.451 \| good	0.483 \| good
2026-02-12T06:00:00.000Z	27 \| good	5.058 \| good	16.493 \| good	19.171 \| good	0.287 \| good	19.024 \| good	0.516 \| good
2026-02-12T07:00:00.000Z	44 \| good	7.65 \| good	19.659 \| good	16.385 \| good	0.257 \| good	19.024 \| good	0.516 \| good
2026-02-12T08:00:00.000Z	38 \| good	6.66 \| good	28.816 \| good	16.116 \| good	0.251 \| good	16.955 \| good	0.456 \| good
2026-02-12T09:00:00.000Z	33 \| good	5.622 \| good	18.154 \| good	9.308 \| good	0.324 \| good	14.249 \| good	0.495 \| good
2026-02-12T10:00:00.000Z	44 \| good	8.168 \| good	27.391 \| good	10.406 \| good	0.312 \| good	15.243 \| good	0.436 \| good
2026-02-12T11:00:00.000Z	49 \| good	8.61 \| good	31.547 \| good	7.637 \| good	0.385 \| good	14.27 \| good	0.463 \| good
2026-02-12T12:00:00.000Z	27 \| good	5.082 \| good	17.028 \| good	7.034 \| good	0.361 \| good	12.074 \| good	0.455 \| good
2026-02-12T13:00:00.000Z	27 \| good	4.757 \| good	16.708 \| good	7.034 \| good	0.369 \| good	12.074 \| good	0.455 \| good
2026-02-12T14:00:00.000Z	27 \| good	4.84 \| good	18.212 \| good	6.133 \| good	0.405 \| good	14.149 \| good	0.579 \| good
2026-02-12T15:00:00.000Z	38 \| good	7.493 \| good	32.363 \| good	6.724 \| good	0.559 \| good	18.419 \| good	0.681 \| good
2026-02-12T16:00:00.000Z	49 \| good	9.14 \| good	29.195 \| good	9.381 \| good	0.715 \| good	15.714 \| good	0.695 \| good
2026-02-12T17:00:00.000Z	54 \| moderate	11.484 \| good	28.67 \| good	12.726 \| good	0.675 \| good	12.919 \| good	0.531 \| good
2026-02-12T18:00:00.000Z	33 \| good	5.663 \| good	19.619 \| good	17.711 \| good	0.516 \| good	9.848 \| good	0.423 \| good
2026-02-12T19:00:00.000Z	49 \| good	9.159 \| good	26.715 \| good	21.423 \| good	0.686 \| good	8.399 \| good	0.377 \| good
2026-02-12T20:00:00.000Z	38 \| good	7.271 \| good	31.202 \| good	26.014 \| good	0.555 \| good	8.809 \| good	0.31 \| good
2026-02-12T21:00:00.000Z	38 \| good	7.312 \| good	25.391 \| good	28.973 \| good	0.378 \| good	9.936 \| good	0.31 \| good
2026-02-12T21:00:00.000Z	38 \| good	6.813 \| good	21.246 \| good	29.008 \| good	0.38 \| good	8.85 \| good	0.308 \| good
2026-02-12T22:00:00.000Z	58 \| moderate	13.203 \| fine	59.452 \| fine	43.524 \| good	4.782 \| good	11.88 \| good	0.172 \| good
2026-02-12T23:00:00.000Z	64 \| moderate	15.953 \| fine	70.825 \| fine	42.447 \| good	4.561 \| good	12.054 \| good	0.168 \| good
2026-02-13T00:00:00.000Z	52 \| moderate	10.26 \| good	45.588 \| good	36.803 \| good	4.341 \| good	12.227 \| good	0.164 \| good
2026-02-13T01:00:00.000Z	33 \| good	6.378 \| good	28.549 \| good	34.495 \| good	4.165 \| good	18.812 \| good	0.198 \| good
2026-02-13T02:00:00.000Z	31 \| good	4.181 \| good	18.184 \| good	33.14 \| good	3.99 \| good	25.397 \| good	0.231 \| good
2026-02-13T03:00:00.000Z	30 \| good	3.088 \| good	12.512 \| good	22.983 \| good	3.814 \| good	31.982 \| good	0.265 \| good
2026-02-13T04:00:00.000Z	31 \| good	4.643 \| good	20.189 \| good	19.033 \| good	4.091 \| good	32.657 \| good	0.316 \| good
2026-02-13T05:00:00.000Z	31 \| good	3.321 \| good	14.428 \| good	16.052 \| good	4.367 \| good	33.333 \| good	0.366 \| good
2026-02-13T06:00:00.000Z	32 \| good	3.314 \| good	14.233 \| good	14.34 \| good	4.643 \| good	34.008 \| good	0.417 \| good
2026-02-13T07:00:00.000Z	30 \| good	3.554 \| good	15.419 \| good	12.634 \| good	4.148 \| good	32.173 \| good	0.417 \| good
2026-02-13T08:00:00.000Z	28 \| good	4.924 \| good	21.257 \| good	13.506 \| good	3.653 \| good	30.338 \| good	0.417 \| good
2026-02-13T09:00:00.000Z	27 \| good	5.136 \| good	22.254 \| good	15.187 \| good	3.158 \| good	28.503 \| good	0.416 \| good
2026-02-13T10:00:00.000Z	25 \| good	3.471 \| good	15.014 \| good	16.406 \| good	2.853 \| good	26.843 \| good	0.381 \| good
2026-02-13T11:00:00.000Z	24 \| good	3.342 \| good	14.659 \| good	15.481 \| good	2.548 \| good	25.184 \| good	0.345 \| good
2026-02-13T12:00:00.000Z	23 \| good	3.985 \| good	16.968 \| good	17.059 \| good	2.243 \| good	23.524 \| good	0.31 \| good
2026-02-13T13:00:00.000Z	22 \| good	3.634 \| good	15.877 \| good	19.121 \| good	2.122 \| good	23.145 \| good	0.294 \| good
2026-02-13T14:00:00.000Z	22 \| good	2.457 \| good	10.641 \| good	17.561 \| good	2.002 \| good	22.766 \| good	0.278 \| good
2026-02-13T15:00:00.000Z	21 \| good	3.109 \| good	13.595 \| good	16.119 \| good	1.882 \| good	22.386 \| good	0.262 \| good
2026-02-13T16:00:00.000Z	27 \| good	4.553 \| good	19.532 \| good	19.506 \| good	2 \| good	20.95 \| good	0.264 \| good
2026-02-13T17:00:00.000Z	27 \| good	5.118 \| good	22.432 \| good	27.035 \| good	2.118 \| good	19.514 \| good	0.265 \| good
2026-02-13T18:00:00.000Z	38 \| good	6.833 \| good	29.819 \| good	33.537 \| good	2.237 \| good	18.077 \| good	0.266 \| good
2026-02-13T19:00:00.000Z	52 \| moderate	9.971 \| good	44.018 \| good	37.09 \| good	2.663 \| good	16.694 \| good	0.245 \| good
2026-02-13T20:00:00.000Z	54 \| moderate	10.528 \| good	46.815 \| good	42.367 \| good	3.089 \| good	15.311 \| good	0.225 \| good
2026-02-13T21:00:00.000Z	42 \| good	6.639 \| good	29.315 \| good	44.869 \| good	3.515 \| good	13.928 \| good	0.204 \| good
2026-02-13T22:00:00.000Z	42 \| good	6.418 \| good	28.425 \| good	45.267 \| good	3.692 \| good	14.375 \| good	0.2 \| good
2026-02-13T23:00:00.000Z	49 \| good	9.222 \| good	40.914 \| good	44.605 \| good	3.869 \| good	14.823 \| good	0.196 \| good
2026-02-14T00:00:00.000Z	49 \| good	8.503 \| good	37.317 \| good	43.836 \| good	4.046 \| good	15.27 \| good	0.191 \| good
2026-02-14T01:00:00.000Z	38 \| good	7.083 \| good	31.161 \| good	38.537 \| good	4.031 \| good	22.835 \| good	0.24 \| good
2026-02-14T02:00:00.000Z	44 \| good	8.455 \| good	37.162 \| good	31.512 \| good	4.016 \| good	30.4 \| good	0.289 \| good
2026-02-14T03:00:00.000Z	49 \| good	9.459 \| good	41.738 \| good	26.036 \| good	4.001 \| good	37.964 \| good	0.338 \| good
2026-02-14T04:00:00.000Z	52 \| moderate	9.638 \| good	42.697 \| good	23.352 \| good	4.177 \| good	37.689 \| good	0.36 \| good
2026-02-14T05:00:00.000Z	49 \| good	9.299 \| good	41.121 \| good	20.876 \| good	4.353 \| good	37.414 \| good	0.381 \| good
2026-02-14T06:00:00.000Z	90 \| moderate	29.668 \| fine	31.443 \| good	5.285 \| good	4.565 \| good	37.42 \| good	0.405 \| good
2026-02-14T07:00:00.000Z	38 \| good	7.145 \| good	31.413 \| good	11.191 \| good	4.317 \| good	36.693 \| good	0.388 \| good
2026-02-14T08:00:00.000Z	44 \| good	7.618 \| good	33.647 \| good	13.247 \| good	4.105 \| good	36.247 \| good	0.372 \| good
2026-02-14T09:00:00.000Z	34 \| good	5.554 \| good	24.138 \| good	14.247 \| good	3.893 \| good	35.802 \| good	0.357 \| good
2026-02-14T10:00:00.000Z	60 \| moderate	13.737 \| fine	60.825 \| fine	12.726 \| good	3.653 \| good	33.903 \| good	0.333 \| good
2026-02-14T11:00:00.000Z	60 \| moderate	14.009 \| fine	62.195 \| fine	11.519 \| good	3.413 \| good	32.004 \| good	0.309 \| good
2026-02-14T12:00:00.000Z	71 \| moderate	20.071 \| fine	21.63 \| good	8.733 \| good	3.152 \| good	30.03 \| good	0.284 \| good
2026-02-14T13:00:00.000Z	69 \| moderate	18.762 \| fine	20.134 \| good	8.373 \| good	3.255 \| good	30.163 \| good	0.291 \| good
2026-02-14T14:00:00.000Z	67 \| moderate	18.348 \| fine	19.598 \| good	8.014 \| good	3.357 \| good	30.296 \| good	0.297 \| good
2026-02-14T15:00:00.000Z	73 \| moderate	20.942 \| fine	22.123 \| good	7.655 \| good	3.459 \| good	30.43 \| good	0.304 \| good
2026-02-14T16:00:00.000Z	60 \| moderate	13.726 \| fine	61.078 \| fine	19.659 \| good	4.379 \| good	26.771 \| good	0.29 \| good
2026-02-14T17:00:00.000Z	52 \| moderate	9.801 \| good	43.326 \| good	29.028 \| good	5.28 \| good	23.04 \| good	0.277 \| good
2026-02-14T18:00:00.000Z	73 \| moderate	21.11 \| fine	23.747 \| good	29.369 \| good	6.144 \| good	19.184 \| good	0.263 \| good
2026-02-14T19:00:00.000Z	69 \| moderate	19.302 \| fine	22.039 \| good	34.433 \| good	5.884 \| good	16.58 \| good	0.244 \| good
2026-02-14T20:00:00.000Z	67 \| moderate	17.86 \| fine	20.461 \| good	39.496 \| good	5.623 \| good	13.976 \| good	0.225 \| good
2026-02-14T21:00:00.000Z	66 \| moderate	16.851 \| fine	19.393 \| good	44.56 \| good	5.363 \| good	11.373 \| good	0.207 \| good

San Marino

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near San Marino, California

0.31ppm

How accurate is California, USA air quality data?

The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for San Marino, California get updated?

Air quality updates for San Marino, California are available every hour.

What time in the past 24 hours saw the poorest air quality in San Marino, California?

San Marino, California experienced its worst air quality at 05:00:00, 2026-02-12.

When was air quality in San Marino, California the best over the past 24 hours?

The best air quality in San Marino, California was observed at 05:00:00 on 2026-02-12.

What is the air quality in San Marino, California right now?

The air quality in San Marino, California right now is Good, with an AQI of 38.

What pollutant is most frequently found in San Marino, California?

In San Marino, California, PM2.5 is the most frequently found pollutant.

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

When air quality in San Marino, California is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in San Marino, California right now?

San Marino, California currently has a PM_2.5 concentration of 6.813 μg/m³.

What is the current level of PM₁₀ in San Marino, California?

San Marino, California currently has a PM₁₀ concentration of 21.246 μg/m³.

What is the current level of carbon monoxide (CO) in San Marino, California?

The current carbon monoxide (CO) level in San Marino, California is 0.308 ppm.

What is the current level of sulfur dioxide (SO₂) in San Marino, California?

The current sulfur dioxide (SO₂) concentration in San Marino, California is 0.38 ppb.

What is the current level of ozone (O₃) in San Marino, California?

San Marino, California currently has an ozone (O₃) concentration of 29.008 ppm.

What is the current level of nitrogen dioxide (NO₂) in San Marino, California?

The current level of nitrogen dioxide (NO₂) in San Marino, California is 8.85 ppb.

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