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

San Marino, California currently has a PM10 concentration of 12.239 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 0.152 ppb.

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

San Marino, California currently has an ozone (O3) concentration of 16.255 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 3.871 ppb.

Current air quality index in San Marino, California today

Name: Live air pollution levels in San Marino, California today
Creator: Ambee

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)

4.24 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

12.24 μg/m³

155

255

425

605+

Ozone (O₃)

16.25 ppb

201

201+

Sulfur Dioxide (SO₂)

0.15 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.87 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.10 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2025-09-08T13:00:00.000Z	38 \| good	6.846 \| good	29.69 \| good	7.708 \| good	0.263 \| good	21.619 \| good	0.316 \| good
2025-09-08T14:00:00.000Z	33 \| good	6.435 \| good	23.435 \| good	10.565 \| good	0.301 \| good	23.161 \| good	0.417 \| good
2025-09-08T15:00:00.000Z	44 \| good	7.822 \| good	34.597 \| good	14.602 \| good	0.54 \| good	19.754 \| good	0.415 \| good
2025-09-08T16:00:00.000Z	33 \| good	6.464 \| good	29.17 \| good	21.627 \| good	0.669 \| good	13.554 \| good	0.304 \| good
2025-09-08T17:00:00.000Z	54 \| moderate	8.953 \| good	62.041 \| fine	27.733 \| good	0.635 \| good	9.768 \| good	0.301 \| good
2025-09-08T18:00:00.000Z	58 \| moderate	12.859 \| fine	68.373 \| fine	38.345 \| good	0.65 \| good	7.783 \| good	0.209 \| good
2025-09-08T19:00:00.000Z	52 \| moderate	9.616 \| good	32.803 \| good	45.264 \| good	0.547 \| good	6.705 \| good	0.203 \| good
2025-09-08T20:00:00.000Z	54 \| moderate	10.502 \| good	31.975 \| good	48.435 \| good	0.469 \| good	7.511 \| good	0.203 \| good
2025-09-08T21:00:00.000Z	50 \| good	7.621 \| good	36.662 \| good	54.053 \| good	0.315 \| good	10.919 \| good	0.29 \| good
2025-09-08T22:00:00.000Z	45 \| good	6.365 \| good	18.516 \| good	49.368 \| good	0.294 \| good	7.901 \| good	0.29 \| good
2025-09-08T23:00:00.000Z	47 \| good	5.872 \| good	22.019 \| good	51.228 \| good	0.506 \| good	6.171 \| good	0.198 \| good
2025-09-09T00:00:00.000Z	36 \| good	5.23 \| good	22.657 \| good	38.982 \| good	4.482 \| good	8.335 \| good	0.14 \| good
2025-09-09T01:00:00.000Z	29 \| good	4.367 \| good	19.081 \| good	31.417 \| good	4.465 \| good	11.417 \| good	0.146 \| good
2025-09-09T02:00:00.000Z	27 \| good	4.948 \| good	21.553 \| good	29.236 \| good	3.865 \| good	12.612 \| good	0.144 \| good
2025-09-09T03:00:00.000Z	27 \| good	4.965 \| good	21.572 \| good	27.694 \| good	3.91 \| good	15.71 \| good	0.153 \| good
2025-09-09T04:00:00.000Z	22 \| good	4.331 \| good	18.746 \| good	21.362 \| good	4.541 \| good	19.947 \| good	0.17 \| good
2025-09-09T05:00:00.000Z	22 \| good	4.093 \| good	17.982 \| good	19.334 \| good	4.652 \| good	22.314 \| good	0.18 \| good
2025-09-09T06:00:00.000Z	27 \| good	4.669 \| good	20.292 \| good	16.35 \| good	4.762 \| good	24.681 \| good	0.191 \| good
2025-09-09T07:00:00.000Z	23 \| good	3.325 \| good	14.558 \| good	16.124 \| good	4.416 \| good	23.563 \| good	0.198 \| good
2025-09-09T08:00:00.000Z	16 \| good	2.855 \| good	10.616 \| good	6.946 \| good	0.217 \| good	10.495 \| good	0.198 \| good
2025-09-09T09:00:00.000Z	22 \| good	3.83 \| good	17.967 \| good	6.944 \| good	0.21 \| good	9.913 \| good	0.201 \| good
2025-09-09T10:00:00.000Z	22 \| good	3.68 \| good	13.036 \| good	6.944 \| good	0.182 \| good	9.913 \| good	0.201 \| good
2025-09-09T11:00:00.000Z	22 \| good	3.632 \| good	11.383 \| good	1.186 \| good	0.236 \| good	13.426 \| good	0.202 \| good
2025-09-09T12:00:00.000Z	16 \| good	3.485 \| good	13.324 \| good	1.305 \| good	0.205 \| good	12.222 \| good	0.198 \| good
2025-09-09T13:00:00.000Z	22 \| good	3.555 \| good	20.837 \| good	4.07 \| good	0.216 \| good	10.62 \| good	0.198 \| good
2025-09-09T14:00:00.000Z	38 \| good	6.643 \| good	24.283 \| good	9.06 \| good	0.399 \| good	9.409 \| good	0.198 \| good
2025-09-09T15:00:00.000Z	22 \| good	4.229 \| good	15.674 \| good	11.081 \| good	0.477 \| good	8.046 \| good	0.195 \| good
2025-09-09T16:00:00.000Z	22 \| good	3.965 \| good	22.31 \| good	16.07 \| good	0.665 \| good	6.476 \| good	0.195 \| good
2025-09-09T17:00:00.000Z	56 \| moderate	8.085 \| good	66.237 \| fine	20.062 \| good	0.685 \| good	5.927 \| good	0.195 \| good
2025-09-09T18:00:00.000Z	52 \| moderate	9.938 \| good	48.687 \| good	25.726 \| good	0.244 \| good	6.314 \| good	0.195 \| good
2025-09-09T19:00:00.000Z	49 \| good	9.491 \| good	34.214 \| good	29.515 \| good	0.196 \| good	5.492 \| good	0.195 \| good
2025-09-09T20:00:00.000Z	44 \| good	7.659 \| good	28.862 \| good	32.687 \| good	0.15 \| good	6.348 \| good	0.198 \| good
2025-09-09T21:00:00.000Z	34 \| good	5.651 \| good	12.34 \| good	37.495 \| good	0.228 \| good	7.049 \| good	0.198 \| good
2025-09-09T22:00:00.000Z	37 \| good	5.996 \| good	30.372 \| good	40.223 \| good	0.176 \| good	7.739 \| good	0.195 \| good
2025-09-09T23:00:00.000Z	44 \| good	8.056 \| good	24.186 \| good	38.551 \| good	0.112 \| good	6.81 \| good	0.198 \| good
2025-09-10T00:00:00.000Z	36 \| good	5.42 \| good	22.642 \| good	38.592 \| good	0.137 \| good	5.608 \| good	0.199 \| good
2025-09-10T01:00:00.000Z	35 \| good	4.98 \| good	18.279 \| good	38.368 \| good	0.213 \| good	5.194 \| good	0.197 \| good
2025-09-10T02:00:00.000Z	31 \| good	3.731 \| good	13.943 \| good	33.412 \| good	0.191 \| good	5.229 \| good	0.197 \| good
2025-09-10T03:00:00.000Z	28 \| good	5.371 \| good	30.307 \| good	30.308 \| good	0.186 \| good	4.731 \| good	0.199 \| good
2025-09-10T04:00:00.000Z	33 \| good	5.511 \| good	27.818 \| good	26.468 \| good	0.234 \| good	5.257 \| good	0.192 \| good
2025-09-10T05:00:00.000Z	27 \| good	5.123 \| good	21.009 \| good	21.76 \| good	0.442 \| good	5.705 \| good	0.193 \| good
2025-09-10T06:00:00.000Z	27 \| good	2.75 \| good	28.943 \| good	21.76 \| good	0.326 \| good	6.059 \| good	0.193 \| good
2025-09-10T07:00:00.000Z	16 \| good	3.054 \| good	11.775 \| good	16.083 \| good	0.207 \| good	6.823 \| good	0.193 \| good
2025-09-10T08:00:00.000Z	27 \| good	5.094 \| good	17.802 \| good	15.88 \| good	0.298 \| good	6.551 \| good	0.196 \| good
2025-09-10T09:00:00.000Z	27 \| good	4.571 \| good	15.706 \| good	14.205 \| good	0.252 \| good	6.394 \| good	0.1 \| good
2025-09-10T10:00:00.000Z	22 \| good	3.633 \| good	15.061 \| good	15.16 \| good	0.438 \| good	5.245 \| good	0.1 \| good
2025-09-10T11:00:00.000Z	22 \| good	3.603 \| good	12.747 \| good	15.083 \| good	0.153 \| good	4.349 \| good	0.1 \| good
2025-09-10T12:00:00.000Z	22 \| good	4.244 \| good	12.239 \| good	16.255 \| good	0.152 \| good	3.871 \| good	0.101 \| good
2025-09-10T12:00:00.000Z	22 \| good	4.244 \| good	12.239 \| good	16.255 \| good	0.152 \| good	3.871 \| good	0.101 \| good
2025-09-10T13:00:00.000Z	15 \| good	1.626 \| good	6.601 \| good	15.865 \| good	3.899 \| good	13.316 \| good	0.137 \| good
2025-09-10T14:00:00.000Z	17 \| good	2.462 \| good	10.003 \| good	17.911 \| good	3.592 \| good	11.484 \| good	0.136 \| good
2025-09-10T15:00:00.000Z	23 \| good	2.464 \| good	10.018 \| good	24.53 \| good	3.286 \| good	9.652 \| good	0.136 \| good
2025-09-10T16:00:00.000Z	27 \| good	3.017 \| good	12.342 \| good	28.919 \| good	2.945 \| good	8.1 \| good	0.131 \| good
2025-09-10T17:00:00.000Z	31 \| good	4.375 \| good	18.979 \| good	33.052 \| good	2.605 \| good	6.548 \| good	0.126 \| good
2025-09-10T18:00:00.000Z	34 \| good	5.469 \| good	23.383 \| good	37.253 \| good	2.265 \| good	4.995 \| good	0.121 \| good
2025-09-10T19:00:00.000Z	41 \| good	5.751 \| good	24.867 \| good	44.201 \| good	2.346 \| good	4.618 \| good	0.121 \| good
2025-09-10T20:00:00.000Z	44 \| good	6.178 \| good	27.294 \| good	48.27 \| good	2.426 \| good	4.241 \| good	0.12 \| good
2025-09-10T21:00:00.000Z	49 \| good	8.514 \| good	37.685 \| good	49.191 \| good	2.506 \| good	3.864 \| good	0.12 \| good
2025-09-10T22:00:00.000Z	48 \| good	7.613 \| good	33.567 \| good	51.908 \| good	2.69 \| good	4.266 \| good	0.121 \| good
2025-09-10T23:00:00.000Z	44 \| good	7.458 \| good	32.706 \| good	48.236 \| good	2.874 \| good	4.668 \| good	0.121 \| good
2025-09-11T00:00:00.000Z	49 \| good	9.021 \| good	40.104 \| good	47.365 \| good	3.058 \| good	5.069 \| good	0.122 \| good
2025-09-11T01:00:00.000Z	40 \| good	6.855 \| good	30.056 \| good	42.766 \| good	3.306 \| good	7.422 \| good	0.127 \| good
2025-09-11T02:00:00.000Z	49 \| good	8.726 \| good	38.805 \| good	34.855 \| good	3.553 \| good	9.775 \| good	0.132 \| good
2025-09-11T03:00:00.000Z	44 \| good	7.663 \| good	33.713 \| good	33.88 \| good	3.801 \| good	12.128 \| good	0.136 \| good
2025-09-11T04:00:00.000Z	38 \| good	7.414 \| good	32.524 \| good	28.824 \| good	4.06 \| good	14.135 \| good	0.141 \| good
2025-09-11T05:00:00.000Z	33 \| good	6.369 \| good	28.143 \| good	26.14 \| good	4.319 \| good	16.142 \| good	0.146 \| good
2025-09-11T06:00:00.000Z	33 \| good	5.739 \| good	25.342 \| good	23.485 \| good	4.578 \| good	18.149 \| good	0.151 \| good
2025-09-11T07:00:00.000Z	22 \| good	3.703 \| good	15.837 \| good	21.434 \| good	4.614 \| good	19.288 \| good	0.155 \| good
2025-09-11T08:00:00.000Z	22 \| good	3.527 \| good	14.987 \| good	19.833 \| good	4.65 \| good	20.426 \| good	0.159 \| good
2025-09-11T09:00:00.000Z	22 \| good	3.913 \| good	16.989 \| good	17.898 \| good	4.685 \| good	21.564 \| good	0.163 \| good
2025-09-11T10:00:00.000Z	22 \| good	3.795 \| good	16.611 \| good	17.638 \| good	4.917 \| good	21.001 \| good	0.159 \| good
2025-09-11T11:00:00.000Z	19 \| good	3.207 \| good	13.85 \| good	16.526 \| good	5.149 \| good	20.439 \| good	0.156 \| good
2025-09-11T12:00:00.000Z	22 \| good	4.055 \| good	17.967 \| good	13.04 \| good	5.381 \| good	19.876 \| good	0.152 \| good
2025-09-11T13:00:00.000Z	17 \| good	1.885 \| good	7.844 \| good	12.995 \| good	5.35 \| good	17.861 \| good	0.158 \| good
2025-09-11T14:00:00.000Z	16 \| good	2.965 \| good	11.94 \| good	14.557 \| good	5.318 \| good	15.847 \| good	0.165 \| good
2025-09-11T15:00:00.000Z	17 \| good	3.306 \| good	14.257 \| good	18.329 \| good	5.287 \| good	13.832 \| good	0.171 \| good
2025-09-11T16:00:00.000Z	27 \| good	4.624 \| good	20.184 \| good	22.188 \| good	4.773 \| good	11.508 \| good	0.159 \| good
2025-09-11T17:00:00.000Z	33 \| good	5.539 \| good	24.151 \| good	28.635 \| good	4.259 \| good	9.183 \| good	0.147 \| good
2025-09-11T18:00:00.000Z	31 \| good	5.275 \| good	22.672 \| good	34.341 \| good	3.745 \| good	6.859 \| good	0.135 \| good
2025-09-11T19:00:00.000Z	38 \| good	5.348 \| good	22.893 \| good	40.773 \| good	3.808 \| good	6.415 \| good	0.133 \| good
2025-09-11T20:00:00.000Z	42 \| good	5.66 \| good	24.371 \| good	45.283 \| good	3.871 \| good	5.97 \| good	0.132 \| good
2025-09-11T21:00:00.000Z	44 \| good	5.598 \| good	24.03 \| good	46.654 \| good	3.934 \| good	5.526 \| good	0.131 \| good
2025-09-11T22:00:00.000Z	42 \| good	4.762 \| good	20.616 \| good	45.167 \| good	4.072 \| good	5.888 \| good	0.131 \| good
2025-09-11T23:00:00.000Z	37 \| good	4.996 \| good	21.588 \| good	40.147 \| good	4.211 \| good	6.251 \| good	0.132 \| good
2025-09-12T00:00:00.000Z	36 \| good	6.248 \| good	27.512 \| good	39.294 \| good	4.349 \| good	6.614 \| good	0.132 \| good
2025-09-12T01:00:00.000Z	34 \| good	6.314 \| good	27.951 \| good	36.51 \| good	4.507 \| good	9.34 \| good	0.139 \| good
2025-09-12T02:00:00.000Z	49 \| good	9.258 \| good	40.804 \| good	32.03 \| good	4.665 \| good	12.067 \| good	0.147 \| good
2025-09-12T03:00:00.000Z	38 \| good	7.204 \| good	31.767 \| good	29.944 \| good	4.823 \| good	14.793 \| good	0.154 \| good
2025-09-12T04:00:00.000Z	38 \| good	7.346 \| good	32.279 \| good	26.817 \| good	5.046 \| good	17.589 \| good	0.164 \| good
2025-09-12T05:00:00.000Z	38 \| good	6.988 \| good	31.087 \| good	25.183 \| good	5.269 \| good	20.384 \| good	0.174 \| good
2025-09-12T06:00:00.000Z	66 \| moderate	16.695 \| fine	18.267 \| good	13.896 \| good	5.485 \| good	23.152 \| good	0.183 \| good
2025-09-12T07:00:00.000Z	33 \| good	5.634 \| good	24.67 \| good	21.259 \| good	5.382 \| good	24.139 \| good	0.191 \| good
2025-09-12T08:00:00.000Z	33 \| good	5.951 \| good	26.097 \| good	20.131 \| good	5.273 \| good	25.099 \| good	0.198 \| good
2025-09-12T09:00:00.000Z	27 \| good	5.33 \| good	22.917 \| good	20.492 \| good	5.164 \| good	26.059 \| good	0.205 \| good
2025-09-12T10:00:00.000Z	25 \| good	4.172 \| good	17.887 \| good	20.399 \| good	5.032 \| good	25.708 \| good	0.203 \| good
2025-09-12T11:00:00.000Z	24 \| good	3.798 \| good	16.718 \| good	19.218 \| good	4.9 \| good	25.358 \| good	0.202 \| good
2025-09-12T12:00:00.000Z	73 \| moderate	20.857 \| fine	22.683 \| good	6.86 \| good	4.785 \| good	25.043 \| good	0.2 \| good

San Marino

Empower business decisions with accurate air quality data

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

0.20ppm

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

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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, 2025-09-09.

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 2025-09-10.

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 22.

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 4.244 μg/m³.

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

San Marino, California currently has a PM₁₀ concentration of 12.239 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 0.101 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 0.152 ppb.

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

San Marino, California currently has an ozone (O₃) concentration of 16.255 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 3.871 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-09-08T13:00:00.000Z	38 \| good	6.846 \| good	29.69 \| good	7.708 \| good	0.263 \| good	21.619 \| good	0.316 \| good
2025-09-08T14:00:00.000Z	33 \| good	6.435 \| good	23.435 \| good	10.565 \| good	0.301 \| good	23.161 \| good	0.417 \| good
2025-09-08T15:00:00.000Z	44 \| good	7.822 \| good	34.597 \| good	14.602 \| good	0.54 \| good	19.754 \| good	0.415 \| good
2025-09-08T16:00:00.000Z	33 \| good	6.464 \| good	29.17 \| good	21.627 \| good	0.669 \| good	13.554 \| good	0.304 \| good
2025-09-08T17:00:00.000Z	54 \| moderate	8.953 \| good	62.041 \| fine	27.733 \| good	0.635 \| good	9.768 \| good	0.301 \| good
2025-09-08T18:00:00.000Z	58 \| moderate	12.859 \| fine	68.373 \| fine	38.345 \| good	0.65 \| good	7.783 \| good	0.209 \| good
2025-09-08T19:00:00.000Z	52 \| moderate	9.616 \| good	32.803 \| good	45.264 \| good	0.547 \| good	6.705 \| good	0.203 \| good
2025-09-08T20:00:00.000Z	54 \| moderate	10.502 \| good	31.975 \| good	48.435 \| good	0.469 \| good	7.511 \| good	0.203 \| good
2025-09-08T21:00:00.000Z	50 \| good	7.621 \| good	36.662 \| good	54.053 \| good	0.315 \| good	10.919 \| good	0.29 \| good
2025-09-08T22:00:00.000Z	45 \| good	6.365 \| good	18.516 \| good	49.368 \| good	0.294 \| good	7.901 \| good	0.29 \| good
2025-09-08T23:00:00.000Z	47 \| good	5.872 \| good	22.019 \| good	51.228 \| good	0.506 \| good	6.171 \| good	0.198 \| good
2025-09-09T00:00:00.000Z	36 \| good	5.23 \| good	22.657 \| good	38.982 \| good	4.482 \| good	8.335 \| good	0.14 \| good
2025-09-09T01:00:00.000Z	29 \| good	4.367 \| good	19.081 \| good	31.417 \| good	4.465 \| good	11.417 \| good	0.146 \| good
2025-09-09T02:00:00.000Z	27 \| good	4.948 \| good	21.553 \| good	29.236 \| good	3.865 \| good	12.612 \| good	0.144 \| good
2025-09-09T03:00:00.000Z	27 \| good	4.965 \| good	21.572 \| good	27.694 \| good	3.91 \| good	15.71 \| good	0.153 \| good
2025-09-09T04:00:00.000Z	22 \| good	4.331 \| good	18.746 \| good	21.362 \| good	4.541 \| good	19.947 \| good	0.17 \| good
2025-09-09T05:00:00.000Z	22 \| good	4.093 \| good	17.982 \| good	19.334 \| good	4.652 \| good	22.314 \| good	0.18 \| good
2025-09-09T06:00:00.000Z	27 \| good	4.669 \| good	20.292 \| good	16.35 \| good	4.762 \| good	24.681 \| good	0.191 \| good
2025-09-09T07:00:00.000Z	23 \| good	3.325 \| good	14.558 \| good	16.124 \| good	4.416 \| good	23.563 \| good	0.198 \| good
2025-09-09T08:00:00.000Z	16 \| good	2.855 \| good	10.616 \| good	6.946 \| good	0.217 \| good	10.495 \| good	0.198 \| good
2025-09-09T09:00:00.000Z	22 \| good	3.83 \| good	17.967 \| good	6.944 \| good	0.21 \| good	9.913 \| good	0.201 \| good
2025-09-09T10:00:00.000Z	22 \| good	3.68 \| good	13.036 \| good	6.944 \| good	0.182 \| good	9.913 \| good	0.201 \| good
2025-09-09T11:00:00.000Z	22 \| good	3.632 \| good	11.383 \| good	1.186 \| good	0.236 \| good	13.426 \| good	0.202 \| good
2025-09-09T12:00:00.000Z	16 \| good	3.485 \| good	13.324 \| good	1.305 \| good	0.205 \| good	12.222 \| good	0.198 \| good
2025-09-09T13:00:00.000Z	22 \| good	3.555 \| good	20.837 \| good	4.07 \| good	0.216 \| good	10.62 \| good	0.198 \| good
2025-09-09T14:00:00.000Z	38 \| good	6.643 \| good	24.283 \| good	9.06 \| good	0.399 \| good	9.409 \| good	0.198 \| good
2025-09-09T15:00:00.000Z	22 \| good	4.229 \| good	15.674 \| good	11.081 \| good	0.477 \| good	8.046 \| good	0.195 \| good
2025-09-09T16:00:00.000Z	22 \| good	3.965 \| good	22.31 \| good	16.07 \| good	0.665 \| good	6.476 \| good	0.195 \| good
2025-09-09T17:00:00.000Z	56 \| moderate	8.085 \| good	66.237 \| fine	20.062 \| good	0.685 \| good	5.927 \| good	0.195 \| good
2025-09-09T18:00:00.000Z	52 \| moderate	9.938 \| good	48.687 \| good	25.726 \| good	0.244 \| good	6.314 \| good	0.195 \| good
2025-09-09T19:00:00.000Z	49 \| good	9.491 \| good	34.214 \| good	29.515 \| good	0.196 \| good	5.492 \| good	0.195 \| good
2025-09-09T20:00:00.000Z	44 \| good	7.659 \| good	28.862 \| good	32.687 \| good	0.15 \| good	6.348 \| good	0.198 \| good
2025-09-09T21:00:00.000Z	34 \| good	5.651 \| good	12.34 \| good	37.495 \| good	0.228 \| good	7.049 \| good	0.198 \| good
2025-09-09T22:00:00.000Z	37 \| good	5.996 \| good	30.372 \| good	40.223 \| good	0.176 \| good	7.739 \| good	0.195 \| good
2025-09-09T23:00:00.000Z	44 \| good	8.056 \| good	24.186 \| good	38.551 \| good	0.112 \| good	6.81 \| good	0.198 \| good
2025-09-10T00:00:00.000Z	36 \| good	5.42 \| good	22.642 \| good	38.592 \| good	0.137 \| good	5.608 \| good	0.199 \| good
2025-09-10T01:00:00.000Z	35 \| good	4.98 \| good	18.279 \| good	38.368 \| good	0.213 \| good	5.194 \| good	0.197 \| good
2025-09-10T02:00:00.000Z	31 \| good	3.731 \| good	13.943 \| good	33.412 \| good	0.191 \| good	5.229 \| good	0.197 \| good
2025-09-10T03:00:00.000Z	28 \| good	5.371 \| good	30.307 \| good	30.308 \| good	0.186 \| good	4.731 \| good	0.199 \| good
2025-09-10T04:00:00.000Z	33 \| good	5.511 \| good	27.818 \| good	26.468 \| good	0.234 \| good	5.257 \| good	0.192 \| good
2025-09-10T05:00:00.000Z	27 \| good	5.123 \| good	21.009 \| good	21.76 \| good	0.442 \| good	5.705 \| good	0.193 \| good
2025-09-10T06:00:00.000Z	27 \| good	2.75 \| good	28.943 \| good	21.76 \| good	0.326 \| good	6.059 \| good	0.193 \| good
2025-09-10T07:00:00.000Z	16 \| good	3.054 \| good	11.775 \| good	16.083 \| good	0.207 \| good	6.823 \| good	0.193 \| good
2025-09-10T08:00:00.000Z	27 \| good	5.094 \| good	17.802 \| good	15.88 \| good	0.298 \| good	6.551 \| good	0.196 \| good
2025-09-10T09:00:00.000Z	27 \| good	4.571 \| good	15.706 \| good	14.205 \| good	0.252 \| good	6.394 \| good	0.1 \| good
2025-09-10T10:00:00.000Z	22 \| good	3.633 \| good	15.061 \| good	15.16 \| good	0.438 \| good	5.245 \| good	0.1 \| good
2025-09-10T11:00:00.000Z	22 \| good	3.603 \| good	12.747 \| good	15.083 \| good	0.153 \| good	4.349 \| good	0.1 \| good
2025-09-10T12:00:00.000Z	22 \| good	4.244 \| good	12.239 \| good	16.255 \| good	0.152 \| good	3.871 \| good	0.101 \| good
2025-09-10T12:00:00.000Z	22 \| good	4.244 \| good	12.239 \| good	16.255 \| good	0.152 \| good	3.871 \| good	0.101 \| good
2025-09-10T13:00:00.000Z	15 \| good	1.626 \| good	6.601 \| good	15.865 \| good	3.899 \| good	13.316 \| good	0.137 \| good
2025-09-10T14:00:00.000Z	17 \| good	2.462 \| good	10.003 \| good	17.911 \| good	3.592 \| good	11.484 \| good	0.136 \| good
2025-09-10T15:00:00.000Z	23 \| good	2.464 \| good	10.018 \| good	24.53 \| good	3.286 \| good	9.652 \| good	0.136 \| good
2025-09-10T16:00:00.000Z	27 \| good	3.017 \| good	12.342 \| good	28.919 \| good	2.945 \| good	8.1 \| good	0.131 \| good
2025-09-10T17:00:00.000Z	31 \| good	4.375 \| good	18.979 \| good	33.052 \| good	2.605 \| good	6.548 \| good	0.126 \| good
2025-09-10T18:00:00.000Z	34 \| good	5.469 \| good	23.383 \| good	37.253 \| good	2.265 \| good	4.995 \| good	0.121 \| good
2025-09-10T19:00:00.000Z	41 \| good	5.751 \| good	24.867 \| good	44.201 \| good	2.346 \| good	4.618 \| good	0.121 \| good
2025-09-10T20:00:00.000Z	44 \| good	6.178 \| good	27.294 \| good	48.27 \| good	2.426 \| good	4.241 \| good	0.12 \| good
2025-09-10T21:00:00.000Z	49 \| good	8.514 \| good	37.685 \| good	49.191 \| good	2.506 \| good	3.864 \| good	0.12 \| good
2025-09-10T22:00:00.000Z	48 \| good	7.613 \| good	33.567 \| good	51.908 \| good	2.69 \| good	4.266 \| good	0.121 \| good
2025-09-10T23:00:00.000Z	44 \| good	7.458 \| good	32.706 \| good	48.236 \| good	2.874 \| good	4.668 \| good	0.121 \| good
2025-09-11T00:00:00.000Z	49 \| good	9.021 \| good	40.104 \| good	47.365 \| good	3.058 \| good	5.069 \| good	0.122 \| good
2025-09-11T01:00:00.000Z	40 \| good	6.855 \| good	30.056 \| good	42.766 \| good	3.306 \| good	7.422 \| good	0.127 \| good
2025-09-11T02:00:00.000Z	49 \| good	8.726 \| good	38.805 \| good	34.855 \| good	3.553 \| good	9.775 \| good	0.132 \| good
2025-09-11T03:00:00.000Z	44 \| good	7.663 \| good	33.713 \| good	33.88 \| good	3.801 \| good	12.128 \| good	0.136 \| good
2025-09-11T04:00:00.000Z	38 \| good	7.414 \| good	32.524 \| good	28.824 \| good	4.06 \| good	14.135 \| good	0.141 \| good
2025-09-11T05:00:00.000Z	33 \| good	6.369 \| good	28.143 \| good	26.14 \| good	4.319 \| good	16.142 \| good	0.146 \| good
2025-09-11T06:00:00.000Z	33 \| good	5.739 \| good	25.342 \| good	23.485 \| good	4.578 \| good	18.149 \| good	0.151 \| good
2025-09-11T07:00:00.000Z	22 \| good	3.703 \| good	15.837 \| good	21.434 \| good	4.614 \| good	19.288 \| good	0.155 \| good
2025-09-11T08:00:00.000Z	22 \| good	3.527 \| good	14.987 \| good	19.833 \| good	4.65 \| good	20.426 \| good	0.159 \| good
2025-09-11T09:00:00.000Z	22 \| good	3.913 \| good	16.989 \| good	17.898 \| good	4.685 \| good	21.564 \| good	0.163 \| good
2025-09-11T10:00:00.000Z	22 \| good	3.795 \| good	16.611 \| good	17.638 \| good	4.917 \| good	21.001 \| good	0.159 \| good
2025-09-11T11:00:00.000Z	19 \| good	3.207 \| good	13.85 \| good	16.526 \| good	5.149 \| good	20.439 \| good	0.156 \| good
2025-09-11T12:00:00.000Z	22 \| good	4.055 \| good	17.967 \| good	13.04 \| good	5.381 \| good	19.876 \| good	0.152 \| good
2025-09-11T13:00:00.000Z	17 \| good	1.885 \| good	7.844 \| good	12.995 \| good	5.35 \| good	17.861 \| good	0.158 \| good
2025-09-11T14:00:00.000Z	16 \| good	2.965 \| good	11.94 \| good	14.557 \| good	5.318 \| good	15.847 \| good	0.165 \| good
2025-09-11T15:00:00.000Z	17 \| good	3.306 \| good	14.257 \| good	18.329 \| good	5.287 \| good	13.832 \| good	0.171 \| good
2025-09-11T16:00:00.000Z	27 \| good	4.624 \| good	20.184 \| good	22.188 \| good	4.773 \| good	11.508 \| good	0.159 \| good
2025-09-11T17:00:00.000Z	33 \| good	5.539 \| good	24.151 \| good	28.635 \| good	4.259 \| good	9.183 \| good	0.147 \| good
2025-09-11T18:00:00.000Z	31 \| good	5.275 \| good	22.672 \| good	34.341 \| good	3.745 \| good	6.859 \| good	0.135 \| good
2025-09-11T19:00:00.000Z	38 \| good	5.348 \| good	22.893 \| good	40.773 \| good	3.808 \| good	6.415 \| good	0.133 \| good
2025-09-11T20:00:00.000Z	42 \| good	5.66 \| good	24.371 \| good	45.283 \| good	3.871 \| good	5.97 \| good	0.132 \| good
2025-09-11T21:00:00.000Z	44 \| good	5.598 \| good	24.03 \| good	46.654 \| good	3.934 \| good	5.526 \| good	0.131 \| good
2025-09-11T22:00:00.000Z	42 \| good	4.762 \| good	20.616 \| good	45.167 \| good	4.072 \| good	5.888 \| good	0.131 \| good
2025-09-11T23:00:00.000Z	37 \| good	4.996 \| good	21.588 \| good	40.147 \| good	4.211 \| good	6.251 \| good	0.132 \| good
2025-09-12T00:00:00.000Z	36 \| good	6.248 \| good	27.512 \| good	39.294 \| good	4.349 \| good	6.614 \| good	0.132 \| good
2025-09-12T01:00:00.000Z	34 \| good	6.314 \| good	27.951 \| good	36.51 \| good	4.507 \| good	9.34 \| good	0.139 \| good
2025-09-12T02:00:00.000Z	49 \| good	9.258 \| good	40.804 \| good	32.03 \| good	4.665 \| good	12.067 \| good	0.147 \| good
2025-09-12T03:00:00.000Z	38 \| good	7.204 \| good	31.767 \| good	29.944 \| good	4.823 \| good	14.793 \| good	0.154 \| good
2025-09-12T04:00:00.000Z	38 \| good	7.346 \| good	32.279 \| good	26.817 \| good	5.046 \| good	17.589 \| good	0.164 \| good
2025-09-12T05:00:00.000Z	38 \| good	6.988 \| good	31.087 \| good	25.183 \| good	5.269 \| good	20.384 \| good	0.174 \| good
2025-09-12T06:00:00.000Z	66 \| moderate	16.695 \| fine	18.267 \| good	13.896 \| good	5.485 \| good	23.152 \| good	0.183 \| good
2025-09-12T07:00:00.000Z	33 \| good	5.634 \| good	24.67 \| good	21.259 \| good	5.382 \| good	24.139 \| good	0.191 \| good
2025-09-12T08:00:00.000Z	33 \| good	5.951 \| good	26.097 \| good	20.131 \| good	5.273 \| good	25.099 \| good	0.198 \| good
2025-09-12T09:00:00.000Z	27 \| good	5.33 \| good	22.917 \| good	20.492 \| good	5.164 \| good	26.059 \| good	0.205 \| good
2025-09-12T10:00:00.000Z	25 \| good	4.172 \| good	17.887 \| good	20.399 \| good	5.032 \| good	25.708 \| good	0.203 \| good
2025-09-12T11:00:00.000Z	24 \| good	3.798 \| good	16.718 \| good	19.218 \| good	4.9 \| good	25.358 \| good	0.202 \| good
2025-09-12T12:00:00.000Z	73 \| moderate	20.857 \| fine	22.683 \| good	6.86 \| good	4.785 \| good	25.043 \| good	0.2 \| 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

Empower business decisions with accurate air quality data

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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Air quality levels in US

Frequently asked questions

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

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

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

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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?