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

San Marino, California currently has a PM10 concentration of 31.654 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 1.051 ppb.

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

San Marino, California currently has an ozone (O3) concentration of 47.063 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 8.742 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 9.821 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)

Moderate

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)

9.82 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

31.65 μg/m³

155

255

425

605+

Ozone (O₃)

47.06 ppb

201

201+

Sulfur Dioxide (SO₂)

1.05 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.74 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

San Marino, California

Get Live Pollen Counts

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
2025-12-06T00:00:00.000Z	31 \| good	3.169 \| good	33.289 \| good	28.208 \| good	0.461 \| good	21.539 \| good	0.381 \| good
2025-12-06T01:00:00.000Z	27 \| good	4.071 \| good	19.614 \| good	19.008 \| good	0.297 \| good	29.286 \| good	0.487 \| good
2025-12-06T02:00:00.000Z	49 \| good	8.79 \| good	48.557 \| good	14.203 \| good	0.338 \| good	31.91 \| good	0.518 \| good
2025-12-06T03:00:00.000Z	44 \| good	8.031 \| good	29.038 \| good	11.618 \| good	0.545 \| good	33.182 \| good	0.576 \| good
2025-12-06T04:00:00.000Z	52 \| moderate	10.305 \| good	45.494 \| good	6.024 \| good	0.892 \| good	37.687 \| good	0.848 \| good
2025-12-06T05:00:00.000Z	58 \| moderate	13.298 \| fine	50.548 \| good	4.497 \| good	0.889 \| good	37.289 \| good	0.969 \| good
2025-12-06T06:00:00.000Z	62 \| moderate	14.565 \| fine	55.368 \| fine	4.588 \| good	1.012 \| good	34.001 \| good	0.803 \| good
2025-12-06T07:00:00.000Z	60 \| moderate	13.846 \| fine	36.203 \| good	4.704 \| good	1.019 \| good	34.001 \| good	0.803 \| good
2025-12-06T08:00:00.000Z	71 \| moderate	19.937 \| fine	78.797 \| fine	4.859 \| good	0.841 \| good	35.098 \| good	0.968 \| good
2025-12-06T09:00:00.000Z	67 \| moderate	17.69 \| fine	74.447 \| fine	4.451 \| good	0.772 \| good	33.47 \| good	0.919 \| good
2025-12-06T10:00:00.000Z	62 \| moderate	14.885 \| fine	55.901 \| fine	4.3 \| good	0.876 \| good	31.261 \| good	0.867 \| good
2025-12-06T11:00:00.000Z	56 \| moderate	11.966 \| good	52.661 \| good	4.785 \| good	1.057 \| good	30.704 \| good	0.683 \| good
2025-12-06T12:00:00.000Z	56 \| moderate	12.368 \| fine	48.361 \| good	4.399 \| good	0.79 \| good	29.394 \| good	0.747 \| good
2025-12-06T13:00:00.000Z	52 \| moderate	9.653 \| good	43.949 \| good	4.399 \| good	0.789 \| good	29.394 \| good	0.747 \| good
2025-12-06T14:00:00.000Z	52 \| moderate	9.945 \| good	36.241 \| good	4.859 \| good	0.804 \| good	28.46 \| good	0.58 \| good
2025-12-06T15:00:00.000Z	44 \| good	7.524 \| good	31.721 \| good	4.829 \| good	0.913 \| good	28.802 \| good	0.664 \| good
2025-12-06T16:00:00.000Z	49 \| good	9.191 \| good	30.382 \| good	6.121 \| good	1.02 \| good	28.279 \| good	0.741 \| good
2025-12-06T17:00:00.000Z	54 \| moderate	10.993 \| good	42.217 \| good	13.139 \| good	0.891 \| good	24.325 \| good	0.612 \| good
2025-12-06T18:00:00.000Z	64 \| moderate	15.562 \| fine	50.466 \| good	21.022 \| good	0.756 \| good	16.409 \| good	0.344 \| good
2025-12-06T19:00:00.000Z	58 \| moderate	13.392 \| fine	58.507 \| fine	23.935 \| good	1.134 \| good	15.761 \| good	0.354 \| good
2025-12-06T20:00:00.000Z	56 \| moderate	11.776 \| good	30.27 \| good	27.428 \| good	0.929 \| good	18.052 \| good	0.339 \| good
2025-12-06T21:00:00.000Z	54 \| moderate	10.535 \| good	30.778 \| good	33.126 \| good	1.043 \| good	15.331 \| good	0.314 \| good
2025-12-06T22:00:00.000Z	56 \| moderate	11.605 \| good	36.731 \| good	34.779 \| good	0.452 \| good	16.477 \| good	0.308 \| good
2025-12-06T23:00:00.000Z	44 \| good	7.979 \| good	37.479 \| good	37.291 \| good	0.717 \| good	17.059 \| good	0.323 \| good
2025-12-07T00:00:00.000Z	60 \| moderate	13.966 \| fine	53.974 \| good	35.677 \| good	0.773 \| good	20.067 \| good	0.395 \| good
2025-12-07T01:00:00.000Z	56 \| moderate	12.475 \| fine	34.129 \| good	29.911 \| good	0.728 \| good	23.683 \| good	0.386 \| good
2025-12-07T02:00:00.000Z	45 \| good	6.965 \| good	48.525 \| good	22.024 \| good	0.621 \| good	27.035 \| good	0.495 \| good
2025-12-07T03:00:00.000Z	52 \| moderate	10.15 \| good	38.34 \| good	11.499 \| good	0.615 \| good	34.395 \| good	0.665 \| good
2025-12-07T04:00:00.000Z	56 \| moderate	12.099 \| good	30.865 \| good	9.231 \| good	0.747 \| good	37.633 \| good	0.8 \| good
2025-12-07T05:00:00.000Z	60 \| moderate	13.522 \| fine	41.336 \| good	9.231 \| good	0.661 \| good	36.365 \| good	0.824 \| good
2025-12-07T06:00:00.000Z	64 \| moderate	16.375 \| fine	41.614 \| good	6.055 \| good	0.828 \| good	35.205 \| good	0.952 \| good
2025-12-07T07:00:00.000Z	56 \| moderate	11.749 \| good	48.945 \| good	6.055 \| good	0.833 \| good	35.205 \| good	0.952 \| good
2025-12-07T08:00:00.000Z	58 \| moderate	12.725 \| fine	44.723 \| good	6.082 \| good	0.939 \| good	33.349 \| good	0.975 \| good
2025-12-07T09:00:00.000Z	54 \| moderate	11.481 \| good	29.764 \| good	4.449 \| good	0.499 \| good	31.478 \| good	1.013 \| good
2025-12-07T10:00:00.000Z	52 \| moderate	9.631 \| good	29.327 \| good	4.244 \| good	0.933 \| good	30.267 \| good	0.959 \| good
2025-12-07T11:00:00.000Z	56 \| moderate	11.827 \| good	29.66 \| good	4.097 \| good	0.93 \| good	30.267 \| good	0.959 \| good
2025-12-07T12:00:00.000Z	54 \| moderate	10.801 \| good	27.709 \| good	4.097 \| good	0.924 \| good	30.267 \| good	0.959 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	16.92 \| fine	52.104 \| good	4.097 \| good	0.844 \| good	5.691 \| good	0.546 \| good
2025-12-07T14:00:00.000Z	62 \| moderate	14.814 \| fine	33.019 \| good	5.148 \| good	0.571 \| good	27.089 \| good	0.611 \| good
2025-12-07T15:00:00.000Z	56 \| moderate	11.752 \| good	40.057 \| good	5.239 \| good	0.668 \| good	24.966 \| good	0.606 \| good
2025-12-07T16:00:00.000Z	62 \| moderate	15.126 \| fine	42.502 \| good	5.239 \| good	0.705 \| good	23.444 \| good	0.571 \| good
2025-12-07T17:00:00.000Z	54 \| moderate	11.481 \| good	30.931 \| good	16.814 \| good	0.628 \| good	18.622 \| good	0.529 \| good
2025-12-07T18:00:00.000Z	56 \| moderate	12.188 \| fine	29.641 \| good	24.017 \| good	0.547 \| good	13.366 \| good	0.362 \| good
2025-12-07T19:00:00.000Z	38 \| good	6.563 \| good	23.443 \| good	30.217 \| good	0.675 \| good	11.529 \| good	0.29 \| good
2025-12-07T20:00:00.000Z	54 \| moderate	11.442 \| good	29.982 \| good	35.548 \| good	0.847 \| good	9.944 \| good	0.267 \| good
2025-12-07T21:00:00.000Z	54 \| moderate	10.604 \| good	31.854 \| good	41.28 \| good	0.629 \| good	8.378 \| good	0.259 \| good
2025-12-07T22:00:00.000Z	58 \| moderate	12.959 \| fine	42.529 \| good	42.763 \| good	0.716 \| good	9.511 \| good	0.28 \| good
2025-12-07T23:00:00.000Z	52 \| moderate	10.213 \| good	34.928 \| good	44.808 \| good	0.988 \| good	10.538 \| good	0.337 \| good
2025-12-07T23:00:00.000Z	52 \| moderate	9.821 \| good	31.654 \| good	47.063 \| good	1.051 \| good	8.742 \| good	0.311 \| good
2025-12-08T00:00:00.000Z	67 \| moderate	18.186 \| fine	80.549 \| fine	31.066 \| good	5.841 \| good	32.481 \| good	0.31 \| good
2025-12-08T01:00:00.000Z	67 \| moderate	18.473 \| fine	80.95 \| fine	23.743 \| good	5.847 \| good	35.767 \| good	0.405 \| good
2025-12-08T02:00:00.000Z	71 \| moderate	19.535 \| fine	86.576 \| fine	21.184 \| good	5.852 \| good	39.054 \| good	0.5 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	21.897 \| fine	96.562 \| fine	15.39 \| good	5.858 \| good	42.341 \| good	0.595 \| good
2025-12-08T04:00:00.000Z	81 \| moderate	24.58 \| fine	106.866 \| fine	10.178 \| good	5.303 \| good	40.156 \| good	0.596 \| good
2025-12-08T05:00:00.000Z	77 \| moderate	23.361 \| fine	102.535 \| fine	6.511 \| good	4.749 \| good	37.97 \| good	0.598 \| good
2025-12-08T06:00:00.000Z	79 \| moderate	24.173 \| fine	105.083 \| fine	6.544 \| good	4.194 \| good	35.785 \| good	0.599 \| good
2025-12-08T07:00:00.000Z	79 \| moderate	24.325 \| fine	106.604 \| fine	6.403 \| good	3.602 \| good	34.479 \| good	0.541 \| good
2025-12-08T08:00:00.000Z	73 \| moderate	21.365 \| fine	93.171 \| fine	7.107 \| good	3.011 \| good	33.173 \| good	0.483 \| good
2025-12-08T09:00:00.000Z	69 \| moderate	18.99 \| fine	84.063 \| fine	8.109 \| good	2.419 \| good	31.867 \| good	0.426 \| good
2025-12-08T10:00:00.000Z	67 \| moderate	18.154 \| fine	80.198 \| fine	8.011 \| good	2.188 \| good	30.262 \| good	0.373 \| good
2025-12-08T11:00:00.000Z	62 \| moderate	15.389 \| fine	68.216 \| fine	6.754 \| good	1.957 \| good	28.657 \| good	0.32 \| good
2025-12-08T12:00:00.000Z	56 \| moderate	12.221 \| fine	54.331 \| good	6.787 \| good	1.725 \| good	27.053 \| good	0.268 \| good
2025-12-08T13:00:00.000Z	49 \| good	8.625 \| good	38.022 \| good	6.947 \| good	1.821 \| good	26.373 \| good	0.259 \| good
2025-12-08T14:00:00.000Z	38 \| good	6.786 \| good	30.228 \| good	6.884 \| good	1.916 \| good	25.694 \| good	0.251 \| good
2025-12-08T15:00:00.000Z	27 \| good	4.754 \| good	20.613 \| good	7.053 \| good	2.011 \| good	25.014 \| good	0.242 \| good
2025-12-08T16:00:00.000Z	22 \| good	4.065 \| good	17.328 \| good	8.871 \| good	2.189 \| good	22.666 \| good	0.25 \| good
2025-12-08T17:00:00.000Z	27 \| good	5.271 \| good	22.567 \| good	19.156 \| good	2.366 \| good	20.318 \| good	0.257 \| good
2025-12-08T18:00:00.000Z	33 \| good	5.918 \| good	25.462 \| good	25.297 \| good	2.543 \| good	17.97 \| good	0.265 \| good
2025-12-08T19:00:00.000Z	33 \| good	6.077 \| good	27.092 \| good	30.549 \| good	2.711 \| good	16.812 \| good	0.242 \| good
2025-12-08T20:00:00.000Z	44 \| good	7.626 \| good	33.909 \| good	34.958 \| good	2.879 \| good	15.654 \| good	0.22 \| good
2025-12-08T21:00:00.000Z	54 \| moderate	11.233 \| good	49.906 \| good	37.948 \| good	3.046 \| good	14.495 \| good	0.197 \| good
2025-12-08T22:00:00.000Z	56 \| moderate	12.273 \| fine	54.721 \| good	37.089 \| good	3.357 \| good	18.154 \| good	0.216 \| good
2025-12-08T23:00:00.000Z	56 \| moderate	11.543 \| good	50.644 \| good	33.016 \| good	3.668 \| good	21.814 \| good	0.234 \| good
2025-12-09T00:00:00.000Z	52 \| moderate	10.32 \| good	45.414 \| good	27.48 \| good	3.979 \| good	25.473 \| good	0.252 \| good
2025-12-09T01:00:00.000Z	44 \| good	8.153 \| good	35.828 \| good	16.066 \| good	3.866 \| good	27.633 \| good	0.291 \| good
2025-12-09T02:00:00.000Z	33 \| good	5.871 \| good	26.486 \| good	9.951 \| good	3.754 \| good	29.792 \| good	0.33 \| good
2025-12-09T03:00:00.000Z	30 \| good	5.314 \| good	23.013 \| good	10.153 \| good	3.641 \| good	31.952 \| good	0.369 \| good
2025-12-09T04:00:00.000Z	29 \| good	5.026 \| good	22.009 \| good	10.652 \| good	3.263 \| good	30.603 \| good	0.338 \| good
2025-12-09T05:00:00.000Z	27 \| good	3.468 \| good	15.034 \| good	9.735 \| good	2.886 \| good	29.255 \| good	0.307 \| good
2025-12-09T06:00:00.000Z	26 \| good	2.842 \| good	12.191 \| good	9.425 \| good	2.508 \| good	27.906 \| good	0.277 \| good
2025-12-09T07:00:00.000Z	25 \| good	1.745 \| good	7.092 \| good	9.148 \| good	2.176 \| good	26.059 \| good	0.246 \| good
2025-12-09T08:00:00.000Z	23 \| good	1.49 \| good	6.028 \| good	9.937 \| good	1.845 \| good	24.212 \| good	0.215 \| good
2025-12-09T09:00:00.000Z	21 \| good	1.031 \| good	3.976 \| good	8.891 \| good	1.514 \| good	22.365 \| good	0.184 \| good
2025-12-09T10:00:00.000Z	18 \| good	0.885 \| good	3.126 \| good	10.13 \| good	1.536 \| good	19.387 \| good	0.167 \| good
2025-12-09T11:00:00.000Z	15 \| good	1.281 \| good	5.032 \| good	9.767 \| good	1.558 \| good	16.409 \| good	0.149 \| good
2025-12-09T12:00:00.000Z	12 \| good	1.061 \| good	4.049 \| good	9.6 \| good	1.58 \| good	13.431 \| good	0.131 \| good
2025-12-09T13:00:00.000Z	15 \| good	0.686 \| good	2.232 \| good	10.285 \| good	1.772 \| good	15.768 \| good	0.144 \| good
2025-12-09T14:00:00.000Z	17 \| good	1.111 \| good	4.799 \| good	9.002 \| good	1.964 \| good	18.104 \| good	0.157 \| good
2025-12-09T15:00:00.000Z	19 \| good	1.807 \| good	7.144 \| good	8.638 \| good	2.156 \| good	20.44 \| good	0.17 \| good
2025-12-09T16:00:00.000Z	19 \| good	2.516 \| good	10.289 \| good	8.512 \| good	2.372 \| good	19.605 \| good	0.191 \| good
2025-12-09T17:00:00.000Z	19 \| good	2.271 \| good	9.211 \| good	20.25 \| good	2.588 \| good	18.771 \| good	0.211 \| good
2025-12-09T18:00:00.000Z	23 \| good	2.793 \| good	11.273 \| good	24.942 \| good	2.803 \| good	17.936 \| good	0.231 \| good
2025-12-09T19:00:00.000Z	27 \| good	2.614 \| good	11.089 \| good	28.882 \| good	3.041 \| good	16.884 \| good	0.213 \| good
2025-12-09T20:00:00.000Z	30 \| good	3.115 \| good	13.701 \| good	32.039 \| good	3.278 \| good	15.832 \| good	0.194 \| good
2025-12-09T21:00:00.000Z	31 \| good	5.323 \| good	23.032 \| good	33.288 \| good	3.516 \| good	14.78 \| good	0.175 \| good
2025-12-09T22:00:00.000Z	38 \| good	6.766 \| good	29.917 \| good	34.627 \| good	3.808 \| good	18.603 \| good	0.198 \| good
2025-12-09T23:00:00.000Z	33 \| good	6.077 \| good	26.655 \| good	30.756 \| good	4.1 \| good	22.426 \| good	0.22 \| good

San Marino

Empower business decisions with accurate air quality data

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

0.22ppm

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 01:00:00, 2025-12-07.

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

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

The air quality in San Marino, California right now is Moderate, with an AQI of 52.

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 9.821 μg/m³.

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

San Marino, California currently has a PM₁₀ concentration of 31.654 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 0.311 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 1.051 ppb.

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

San Marino, California currently has an ozone (O₃) concentration of 47.063 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 8.742 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-06T00:00:00.000Z	31 \| good	3.169 \| good	33.289 \| good	28.208 \| good	0.461 \| good	21.539 \| good	0.381 \| good
2025-12-06T01:00:00.000Z	27 \| good	4.071 \| good	19.614 \| good	19.008 \| good	0.297 \| good	29.286 \| good	0.487 \| good
2025-12-06T02:00:00.000Z	49 \| good	8.79 \| good	48.557 \| good	14.203 \| good	0.338 \| good	31.91 \| good	0.518 \| good
2025-12-06T03:00:00.000Z	44 \| good	8.031 \| good	29.038 \| good	11.618 \| good	0.545 \| good	33.182 \| good	0.576 \| good
2025-12-06T04:00:00.000Z	52 \| moderate	10.305 \| good	45.494 \| good	6.024 \| good	0.892 \| good	37.687 \| good	0.848 \| good
2025-12-06T05:00:00.000Z	58 \| moderate	13.298 \| fine	50.548 \| good	4.497 \| good	0.889 \| good	37.289 \| good	0.969 \| good
2025-12-06T06:00:00.000Z	62 \| moderate	14.565 \| fine	55.368 \| fine	4.588 \| good	1.012 \| good	34.001 \| good	0.803 \| good
2025-12-06T07:00:00.000Z	60 \| moderate	13.846 \| fine	36.203 \| good	4.704 \| good	1.019 \| good	34.001 \| good	0.803 \| good
2025-12-06T08:00:00.000Z	71 \| moderate	19.937 \| fine	78.797 \| fine	4.859 \| good	0.841 \| good	35.098 \| good	0.968 \| good
2025-12-06T09:00:00.000Z	67 \| moderate	17.69 \| fine	74.447 \| fine	4.451 \| good	0.772 \| good	33.47 \| good	0.919 \| good
2025-12-06T10:00:00.000Z	62 \| moderate	14.885 \| fine	55.901 \| fine	4.3 \| good	0.876 \| good	31.261 \| good	0.867 \| good
2025-12-06T11:00:00.000Z	56 \| moderate	11.966 \| good	52.661 \| good	4.785 \| good	1.057 \| good	30.704 \| good	0.683 \| good
2025-12-06T12:00:00.000Z	56 \| moderate	12.368 \| fine	48.361 \| good	4.399 \| good	0.79 \| good	29.394 \| good	0.747 \| good
2025-12-06T13:00:00.000Z	52 \| moderate	9.653 \| good	43.949 \| good	4.399 \| good	0.789 \| good	29.394 \| good	0.747 \| good
2025-12-06T14:00:00.000Z	52 \| moderate	9.945 \| good	36.241 \| good	4.859 \| good	0.804 \| good	28.46 \| good	0.58 \| good
2025-12-06T15:00:00.000Z	44 \| good	7.524 \| good	31.721 \| good	4.829 \| good	0.913 \| good	28.802 \| good	0.664 \| good
2025-12-06T16:00:00.000Z	49 \| good	9.191 \| good	30.382 \| good	6.121 \| good	1.02 \| good	28.279 \| good	0.741 \| good
2025-12-06T17:00:00.000Z	54 \| moderate	10.993 \| good	42.217 \| good	13.139 \| good	0.891 \| good	24.325 \| good	0.612 \| good
2025-12-06T18:00:00.000Z	64 \| moderate	15.562 \| fine	50.466 \| good	21.022 \| good	0.756 \| good	16.409 \| good	0.344 \| good
2025-12-06T19:00:00.000Z	58 \| moderate	13.392 \| fine	58.507 \| fine	23.935 \| good	1.134 \| good	15.761 \| good	0.354 \| good
2025-12-06T20:00:00.000Z	56 \| moderate	11.776 \| good	30.27 \| good	27.428 \| good	0.929 \| good	18.052 \| good	0.339 \| good
2025-12-06T21:00:00.000Z	54 \| moderate	10.535 \| good	30.778 \| good	33.126 \| good	1.043 \| good	15.331 \| good	0.314 \| good
2025-12-06T22:00:00.000Z	56 \| moderate	11.605 \| good	36.731 \| good	34.779 \| good	0.452 \| good	16.477 \| good	0.308 \| good
2025-12-06T23:00:00.000Z	44 \| good	7.979 \| good	37.479 \| good	37.291 \| good	0.717 \| good	17.059 \| good	0.323 \| good
2025-12-07T00:00:00.000Z	60 \| moderate	13.966 \| fine	53.974 \| good	35.677 \| good	0.773 \| good	20.067 \| good	0.395 \| good
2025-12-07T01:00:00.000Z	56 \| moderate	12.475 \| fine	34.129 \| good	29.911 \| good	0.728 \| good	23.683 \| good	0.386 \| good
2025-12-07T02:00:00.000Z	45 \| good	6.965 \| good	48.525 \| good	22.024 \| good	0.621 \| good	27.035 \| good	0.495 \| good
2025-12-07T03:00:00.000Z	52 \| moderate	10.15 \| good	38.34 \| good	11.499 \| good	0.615 \| good	34.395 \| good	0.665 \| good
2025-12-07T04:00:00.000Z	56 \| moderate	12.099 \| good	30.865 \| good	9.231 \| good	0.747 \| good	37.633 \| good	0.8 \| good
2025-12-07T05:00:00.000Z	60 \| moderate	13.522 \| fine	41.336 \| good	9.231 \| good	0.661 \| good	36.365 \| good	0.824 \| good
2025-12-07T06:00:00.000Z	64 \| moderate	16.375 \| fine	41.614 \| good	6.055 \| good	0.828 \| good	35.205 \| good	0.952 \| good
2025-12-07T07:00:00.000Z	56 \| moderate	11.749 \| good	48.945 \| good	6.055 \| good	0.833 \| good	35.205 \| good	0.952 \| good
2025-12-07T08:00:00.000Z	58 \| moderate	12.725 \| fine	44.723 \| good	6.082 \| good	0.939 \| good	33.349 \| good	0.975 \| good
2025-12-07T09:00:00.000Z	54 \| moderate	11.481 \| good	29.764 \| good	4.449 \| good	0.499 \| good	31.478 \| good	1.013 \| good
2025-12-07T10:00:00.000Z	52 \| moderate	9.631 \| good	29.327 \| good	4.244 \| good	0.933 \| good	30.267 \| good	0.959 \| good
2025-12-07T11:00:00.000Z	56 \| moderate	11.827 \| good	29.66 \| good	4.097 \| good	0.93 \| good	30.267 \| good	0.959 \| good
2025-12-07T12:00:00.000Z	54 \| moderate	10.801 \| good	27.709 \| good	4.097 \| good	0.924 \| good	30.267 \| good	0.959 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	16.92 \| fine	52.104 \| good	4.097 \| good	0.844 \| good	5.691 \| good	0.546 \| good
2025-12-07T14:00:00.000Z	62 \| moderate	14.814 \| fine	33.019 \| good	5.148 \| good	0.571 \| good	27.089 \| good	0.611 \| good
2025-12-07T15:00:00.000Z	56 \| moderate	11.752 \| good	40.057 \| good	5.239 \| good	0.668 \| good	24.966 \| good	0.606 \| good
2025-12-07T16:00:00.000Z	62 \| moderate	15.126 \| fine	42.502 \| good	5.239 \| good	0.705 \| good	23.444 \| good	0.571 \| good
2025-12-07T17:00:00.000Z	54 \| moderate	11.481 \| good	30.931 \| good	16.814 \| good	0.628 \| good	18.622 \| good	0.529 \| good
2025-12-07T18:00:00.000Z	56 \| moderate	12.188 \| fine	29.641 \| good	24.017 \| good	0.547 \| good	13.366 \| good	0.362 \| good
2025-12-07T19:00:00.000Z	38 \| good	6.563 \| good	23.443 \| good	30.217 \| good	0.675 \| good	11.529 \| good	0.29 \| good
2025-12-07T20:00:00.000Z	54 \| moderate	11.442 \| good	29.982 \| good	35.548 \| good	0.847 \| good	9.944 \| good	0.267 \| good
2025-12-07T21:00:00.000Z	54 \| moderate	10.604 \| good	31.854 \| good	41.28 \| good	0.629 \| good	8.378 \| good	0.259 \| good
2025-12-07T22:00:00.000Z	58 \| moderate	12.959 \| fine	42.529 \| good	42.763 \| good	0.716 \| good	9.511 \| good	0.28 \| good
2025-12-07T23:00:00.000Z	52 \| moderate	10.213 \| good	34.928 \| good	44.808 \| good	0.988 \| good	10.538 \| good	0.337 \| good
2025-12-07T23:00:00.000Z	52 \| moderate	9.821 \| good	31.654 \| good	47.063 \| good	1.051 \| good	8.742 \| good	0.311 \| good
2025-12-08T00:00:00.000Z	67 \| moderate	18.186 \| fine	80.549 \| fine	31.066 \| good	5.841 \| good	32.481 \| good	0.31 \| good
2025-12-08T01:00:00.000Z	67 \| moderate	18.473 \| fine	80.95 \| fine	23.743 \| good	5.847 \| good	35.767 \| good	0.405 \| good
2025-12-08T02:00:00.000Z	71 \| moderate	19.535 \| fine	86.576 \| fine	21.184 \| good	5.852 \| good	39.054 \| good	0.5 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	21.897 \| fine	96.562 \| fine	15.39 \| good	5.858 \| good	42.341 \| good	0.595 \| good
2025-12-08T04:00:00.000Z	81 \| moderate	24.58 \| fine	106.866 \| fine	10.178 \| good	5.303 \| good	40.156 \| good	0.596 \| good
2025-12-08T05:00:00.000Z	77 \| moderate	23.361 \| fine	102.535 \| fine	6.511 \| good	4.749 \| good	37.97 \| good	0.598 \| good
2025-12-08T06:00:00.000Z	79 \| moderate	24.173 \| fine	105.083 \| fine	6.544 \| good	4.194 \| good	35.785 \| good	0.599 \| good
2025-12-08T07:00:00.000Z	79 \| moderate	24.325 \| fine	106.604 \| fine	6.403 \| good	3.602 \| good	34.479 \| good	0.541 \| good
2025-12-08T08:00:00.000Z	73 \| moderate	21.365 \| fine	93.171 \| fine	7.107 \| good	3.011 \| good	33.173 \| good	0.483 \| good
2025-12-08T09:00:00.000Z	69 \| moderate	18.99 \| fine	84.063 \| fine	8.109 \| good	2.419 \| good	31.867 \| good	0.426 \| good
2025-12-08T10:00:00.000Z	67 \| moderate	18.154 \| fine	80.198 \| fine	8.011 \| good	2.188 \| good	30.262 \| good	0.373 \| good
2025-12-08T11:00:00.000Z	62 \| moderate	15.389 \| fine	68.216 \| fine	6.754 \| good	1.957 \| good	28.657 \| good	0.32 \| good
2025-12-08T12:00:00.000Z	56 \| moderate	12.221 \| fine	54.331 \| good	6.787 \| good	1.725 \| good	27.053 \| good	0.268 \| good
2025-12-08T13:00:00.000Z	49 \| good	8.625 \| good	38.022 \| good	6.947 \| good	1.821 \| good	26.373 \| good	0.259 \| good
2025-12-08T14:00:00.000Z	38 \| good	6.786 \| good	30.228 \| good	6.884 \| good	1.916 \| good	25.694 \| good	0.251 \| good
2025-12-08T15:00:00.000Z	27 \| good	4.754 \| good	20.613 \| good	7.053 \| good	2.011 \| good	25.014 \| good	0.242 \| good
2025-12-08T16:00:00.000Z	22 \| good	4.065 \| good	17.328 \| good	8.871 \| good	2.189 \| good	22.666 \| good	0.25 \| good
2025-12-08T17:00:00.000Z	27 \| good	5.271 \| good	22.567 \| good	19.156 \| good	2.366 \| good	20.318 \| good	0.257 \| good
2025-12-08T18:00:00.000Z	33 \| good	5.918 \| good	25.462 \| good	25.297 \| good	2.543 \| good	17.97 \| good	0.265 \| good
2025-12-08T19:00:00.000Z	33 \| good	6.077 \| good	27.092 \| good	30.549 \| good	2.711 \| good	16.812 \| good	0.242 \| good
2025-12-08T20:00:00.000Z	44 \| good	7.626 \| good	33.909 \| good	34.958 \| good	2.879 \| good	15.654 \| good	0.22 \| good
2025-12-08T21:00:00.000Z	54 \| moderate	11.233 \| good	49.906 \| good	37.948 \| good	3.046 \| good	14.495 \| good	0.197 \| good
2025-12-08T22:00:00.000Z	56 \| moderate	12.273 \| fine	54.721 \| good	37.089 \| good	3.357 \| good	18.154 \| good	0.216 \| good
2025-12-08T23:00:00.000Z	56 \| moderate	11.543 \| good	50.644 \| good	33.016 \| good	3.668 \| good	21.814 \| good	0.234 \| good
2025-12-09T00:00:00.000Z	52 \| moderate	10.32 \| good	45.414 \| good	27.48 \| good	3.979 \| good	25.473 \| good	0.252 \| good
2025-12-09T01:00:00.000Z	44 \| good	8.153 \| good	35.828 \| good	16.066 \| good	3.866 \| good	27.633 \| good	0.291 \| good
2025-12-09T02:00:00.000Z	33 \| good	5.871 \| good	26.486 \| good	9.951 \| good	3.754 \| good	29.792 \| good	0.33 \| good
2025-12-09T03:00:00.000Z	30 \| good	5.314 \| good	23.013 \| good	10.153 \| good	3.641 \| good	31.952 \| good	0.369 \| good
2025-12-09T04:00:00.000Z	29 \| good	5.026 \| good	22.009 \| good	10.652 \| good	3.263 \| good	30.603 \| good	0.338 \| good
2025-12-09T05:00:00.000Z	27 \| good	3.468 \| good	15.034 \| good	9.735 \| good	2.886 \| good	29.255 \| good	0.307 \| good
2025-12-09T06:00:00.000Z	26 \| good	2.842 \| good	12.191 \| good	9.425 \| good	2.508 \| good	27.906 \| good	0.277 \| good
2025-12-09T07:00:00.000Z	25 \| good	1.745 \| good	7.092 \| good	9.148 \| good	2.176 \| good	26.059 \| good	0.246 \| good
2025-12-09T08:00:00.000Z	23 \| good	1.49 \| good	6.028 \| good	9.937 \| good	1.845 \| good	24.212 \| good	0.215 \| good
2025-12-09T09:00:00.000Z	21 \| good	1.031 \| good	3.976 \| good	8.891 \| good	1.514 \| good	22.365 \| good	0.184 \| good
2025-12-09T10:00:00.000Z	18 \| good	0.885 \| good	3.126 \| good	10.13 \| good	1.536 \| good	19.387 \| good	0.167 \| good
2025-12-09T11:00:00.000Z	15 \| good	1.281 \| good	5.032 \| good	9.767 \| good	1.558 \| good	16.409 \| good	0.149 \| good
2025-12-09T12:00:00.000Z	12 \| good	1.061 \| good	4.049 \| good	9.6 \| good	1.58 \| good	13.431 \| good	0.131 \| good
2025-12-09T13:00:00.000Z	15 \| good	0.686 \| good	2.232 \| good	10.285 \| good	1.772 \| good	15.768 \| good	0.144 \| good
2025-12-09T14:00:00.000Z	17 \| good	1.111 \| good	4.799 \| good	9.002 \| good	1.964 \| good	18.104 \| good	0.157 \| good
2025-12-09T15:00:00.000Z	19 \| good	1.807 \| good	7.144 \| good	8.638 \| good	2.156 \| good	20.44 \| good	0.17 \| good
2025-12-09T16:00:00.000Z	19 \| good	2.516 \| good	10.289 \| good	8.512 \| good	2.372 \| good	19.605 \| good	0.191 \| good
2025-12-09T17:00:00.000Z	19 \| good	2.271 \| good	9.211 \| good	20.25 \| good	2.588 \| good	18.771 \| good	0.211 \| good
2025-12-09T18:00:00.000Z	23 \| good	2.793 \| good	11.273 \| good	24.942 \| good	2.803 \| good	17.936 \| good	0.231 \| good
2025-12-09T19:00:00.000Z	27 \| good	2.614 \| good	11.089 \| good	28.882 \| good	3.041 \| good	16.884 \| good	0.213 \| good
2025-12-09T20:00:00.000Z	30 \| good	3.115 \| good	13.701 \| good	32.039 \| good	3.278 \| good	15.832 \| good	0.194 \| good
2025-12-09T21:00:00.000Z	31 \| good	5.323 \| good	23.032 \| good	33.288 \| good	3.516 \| good	14.78 \| good	0.175 \| good
2025-12-09T22:00:00.000Z	38 \| good	6.766 \| good	29.917 \| good	34.627 \| good	3.808 \| good	18.603 \| good	0.198 \| good
2025-12-09T23:00:00.000Z	33 \| good	6.077 \| good	26.655 \| good	30.756 \| good	4.1 \| good	22.426 \| good	0.22 \| good

Current air quality index in San Marino, California today

Common air pollutants in San Marino, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live San Marino, California air quality forecast and history

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

Air quality in nearby cities

East San Gabriel, California

San Gabriel, California

Alhambra, California

South Pasadena, California

Temple City, California

Pasadena, California

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Frequently asked questions

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

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

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

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

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

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

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