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

San Carlos, California currently has a PM10 concentration of 56.396 μg/m3.

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

The current sulfur dioxide (SO2) concentration in San Carlos, California is 0.375 ppb.

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

San Carlos, California currently has an ozone (O3) concentration of 4.444 ppm.

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

The current level of nitrogen dioxide (NO2) in San Carlos, California is 11.538 ppb.

Current air quality index in San Carlos, California today

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

San Carlos, California currently has a PM2.5 concentration of 17.013 μg/m3.

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

Last updated: ... (Local time)

Common air pollutants in San Carlos, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

17.01 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

56.40 μg/m³

155

255

425

605+

Ozone (O₃)

4.44 ppb

201

201+

Sulfur Dioxide (SO₂)

0.38 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.54 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

San Carlos, California

Get Live Pollen Counts

San Carlos, California

Scroll To Air Quality Map

Track live San Carlos, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T15:00:00.000Z	49 \| good	8.587 \| good	36.619 \| good	3.206 \| good	0.466 \| good	15.142 \| good	0.575 \| good
2025-12-05T16:00:00.000Z	44 \| good	7.878 \| good	36.22 \| good	5.809 \| good	0.455 \| good	17.265 \| good	0.854 \| good
2025-12-05T17:00:00.000Z	44 \| good	7.738 \| good	34.669 \| good	5.802 \| good	0.444 \| good	18.658 \| good	0.601 \| good
2025-12-05T18:00:00.000Z	44 \| good	7.688 \| good	34.534 \| good	8.586 \| good	0.474 \| good	13.027 \| good	0.4 \| good
2025-12-05T19:00:00.000Z	44 \| good	7.727 \| good	34.047 \| good	8.645 \| good	0.489 \| good	12.776 \| good	0.4 \| good
2025-12-05T20:00:00.000Z	62 \| moderate	15.131 \| fine	59.466 \| fine	7.684 \| good	0.44 \| good	11.406 \| good	0.302 \| good
2025-12-05T21:00:00.000Z	62 \| moderate	14.868 \| fine	67.995 \| fine	12.256 \| good	0.418 \| good	11.777 \| good	0.302 \| good
2025-12-05T22:00:00.000Z	66 \| moderate	17.138 \| fine	65.401 \| fine	14.05 \| good	0.559 \| good	10.674 \| good	0.212 \| good
2025-12-05T23:00:00.000Z	81 \| moderate	24.379 \| fine	115.465 \| fine	14.83 \| good	0.508 \| good	10.427 \| good	0.214 \| good
2025-12-06T00:00:00.000Z	64 \| moderate	16.257 \| fine	77.936 \| fine	13.103 \| good	0.486 \| good	11.573 \| good	0.211 \| good
2025-12-06T01:00:00.000Z	62 \| moderate	14.704 \| fine	64.479 \| fine	12.988 \| good	0.455 \| good	13.46 \| good	0.215 \| good
2025-12-06T02:00:00.000Z	69 \| moderate	18.718 \| fine	70.661 \| fine	10.162 \| good	0.434 \| good	15.373 \| good	0.307 \| good
2025-12-06T03:00:00.000Z	69 \| moderate	19.496 \| fine	86.476 \| fine	8.067 \| good	0.403 \| good	20.864 \| good	0.492 \| good
2025-12-06T04:00:00.000Z	75 \| moderate	21.892 \| fine	71.557 \| fine	8.063 \| good	0.419 \| good	21.177 \| good	0.588 \| good
2025-12-06T05:00:00.000Z	75 \| moderate	22.155 \| fine	94.764 \| fine	3.565 \| good	0.458 \| good	21.025 \| good	0.761 \| good
2025-12-06T06:00:00.000Z	73 \| moderate	20.511 \| fine	86.256 \| fine	1.788 \| good	0.444 \| good	19.391 \| good	0.853 \| good
2025-12-06T07:00:00.000Z	67 \| moderate	18.144 \| fine	63.824 \| fine	1.66 \| good	0.463 \| good	19.304 \| good	0.845 \| good
2025-12-06T08:00:00.000Z	73 \| moderate	20.848 \| fine	79.737 \| fine	1.876 \| good	0.413 \| good	17.126 \| good	0.571 \| good
2025-12-06T09:00:00.000Z	73 \| moderate	21.495 \| fine	85.096 \| fine	1.881 \| good	0.421 \| good	17.136 \| good	0.571 \| good
2025-12-06T10:00:00.000Z	73 \| moderate	21.223 \| fine	86.123 \| fine	1.858 \| good	0.912 \| good	5.221 \| good	0.43 \| good
2025-12-06T11:00:00.000Z	67 \| moderate	17.759 \| fine	53.81 \| good	1.956 \| good	0.851 \| good	5.053 \| good	0.381 \| good
2025-12-06T12:00:00.000Z	60 \| moderate	14.399 \| fine	18.294 \| good	5.024 \| good	0.328 \| good	9.467 \| good	0.366 \| good
2025-12-06T13:00:00.000Z	64 \| moderate	16.315 \| fine	74.049 \| fine	1.813 \| good	0.378 \| good	13.876 \| good	0.298 \| good
2025-12-06T14:00:00.000Z	58 \| moderate	13.369 \| fine	52.786 \| good	2.677 \| good	0.516 \| good	9.51 \| good	0.202 \| good
2025-12-06T15:00:00.000Z	56 \| moderate	11.668 \| good	40.549 \| good	4.479 \| good	0.403 \| good	9.152 \| good	0.203 \| good
2025-12-06T16:00:00.000Z	66 \| moderate	17.437 \| fine	74.727 \| fine	6.306 \| good	0.374 \| good	7.299 \| good	0.207 \| good
2025-12-06T17:00:00.000Z	64 \| moderate	16.012 \| fine	79.022 \| fine	10.844 \| good	0.428 \| good	7.896 \| good	0.213 \| good
2025-12-06T18:00:00.000Z	62 \| moderate	15.407 \| fine	56.236 \| fine	10.761 \| good	0.5 \| good	6.585 \| good	0.213 \| good
2025-12-06T19:00:00.000Z	62 \| moderate	15.078 \| fine	71.258 \| fine	11.826 \| good	0.517 \| good	6.4 \| good	0.218 \| good
2025-12-06T20:00:00.000Z	56 \| moderate	11.561 \| good	28.813 \| good	10.963 \| good	0.544 \| good	5.298 \| good	0.214 \| good
2025-12-06T21:00:00.000Z	64 \| moderate	15.8 \| fine	68.34 \| fine	12.787 \| good	0.65 \| good	6.112 \| good	0.218 \| good
2025-12-06T22:00:00.000Z	66 \| moderate	17.13 \| fine	70.442 \| fine	12.849 \| good	0.668 \| good	6.133 \| good	0.215 \| good
2025-12-06T23:00:00.000Z	69 \| moderate	19.166 \| fine	66.388 \| fine	12.954 \| good	0.59 \| good	5.908 \| good	0.212 \| good
2025-12-07T00:00:00.000Z	64 \| moderate	16.466 \| fine	71.07 \| fine	12.913 \| good	0.494 \| good	9.262 \| good	0.212 \| good
2025-12-07T01:00:00.000Z	62 \| moderate	15.479 \| fine	66.709 \| fine	12.927 \| good	0.452 \| good	11.331 \| good	0.213 \| good
2025-12-07T02:00:00.000Z	75 \| moderate	21.678 \| fine	73.444 \| fine	10.933 \| good	0.417 \| good	10.252 \| good	0.217 \| good
2025-12-07T03:00:00.000Z	67 \| moderate	18.297 \| fine	55.227 \| fine	8.102 \| good	0.432 \| good	11.959 \| good	0.302 \| good
2025-12-07T04:00:00.000Z	66 \| moderate	17.302 \| fine	63.936 \| fine	8.014 \| good	0.401 \| good	16.533 \| good	0.576 \| good
2025-12-07T05:00:00.000Z	60 \| moderate	14.351 \| fine	68.858 \| fine	7.068 \| good	0.427 \| good	16.224 \| good	0.665 \| good
2025-12-07T06:00:00.000Z	64 \| moderate	16.273 \| fine	67.955 \| fine	5.251 \| good	0.426 \| good	14.006 \| good	0.669 \| good
2025-12-07T07:00:00.000Z	69 \| moderate	18.835 \| fine	74.927 \| fine	3.521 \| good	0.384 \| good	13.911 \| good	0.664 \| good
2025-12-07T08:00:00.000Z	77 \| moderate	21.117 \| fine	107.48 \| fine	1.844 \| good	0.374 \| good	13.849 \| good	0.664 \| good
2025-12-07T09:00:00.000Z	67 \| moderate	18.046 \| fine	79.308 \| fine	1.756 \| good	0.383 \| good	13.855 \| good	0.664 \| good
2025-12-07T10:00:00.000Z	67 \| moderate	17.577 \| fine	77.497 \| fine	1.801 \| good	0.482 \| good	3.938 \| good	0.269 \| good
2025-12-07T11:00:00.000Z	67 \| moderate	18.102 \| fine	64.029 \| fine	1.732 \| good	0.508 \| good	3.337 \| good	0.257 \| good
2025-12-07T12:00:00.000Z	52 \| moderate	10.467 \| good	20.492 \| good	5.151 \| good	0.347 \| good	7.034 \| good	0.23 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	17.013 \| fine	56.396 \| fine	4.444 \| good	0.375 \| good	11.538 \| good	0.305 \| good
2025-12-07T14:00:00.000Z	52 \| moderate	10.443 \| good	29.03 \| good	4.491 \| good	0.457 \| good	9.979 \| good	0.308 \| good
2025-12-07T14:00:00.000Z	66 \| moderate	17.013 \| fine	56.396 \| fine	4.444 \| good	0.375 \| good	11.538 \| good	0.305 \| good
2025-12-07T15:00:00.000Z	54 \| moderate	11.336 \| good	50.726 \| good	4.97 \| good	1.377 \| good	16.923 \| good	0.258 \| good
2025-12-07T16:00:00.000Z	56 \| moderate	12.189 \| fine	54.915 \| good	7.558 \| good	1.519 \| good	15.771 \| good	0.263 \| good
2025-12-07T17:00:00.000Z	56 \| moderate	12.453 \| fine	55.759 \| fine	7.766 \| good	1.661 \| good	14.62 \| good	0.268 \| good
2025-12-07T18:00:00.000Z	56 \| moderate	11.941 \| good	53.338 \| good	9.026 \| good	1.803 \| good	13.468 \| good	0.273 \| good
2025-12-07T19:00:00.000Z	54 \| moderate	10.695 \| good	47.554 \| good	11.215 \| good	2.017 \| good	12.493 \| good	0.247 \| good
2025-12-07T20:00:00.000Z	56 \| moderate	11.762 \| good	52.386 \| good	11.267 \| good	2.232 \| good	11.519 \| good	0.221 \| good
2025-12-07T21:00:00.000Z	58 \| moderate	12.888 \| fine	56.843 \| fine	11.371 \| good	2.446 \| good	10.544 \| good	0.195 \| good
2025-12-07T22:00:00.000Z	58 \| moderate	12.827 \| fine	56.881 \| fine	12.357 \| good	2.368 \| good	11.625 \| good	0.191 \| good
2025-12-07T23:00:00.000Z	58 \| moderate	12.565 \| fine	56.259 \| fine	11.31 \| good	2.29 \| good	12.705 \| good	0.187 \| good
2025-12-08T00:00:00.000Z	54 \| moderate	10.869 \| good	48.195 \| good	11.231 \| good	2.212 \| good	13.786 \| good	0.183 \| good
2025-12-08T01:00:00.000Z	49 \| good	9.084 \| good	40.205 \| good	9.69 \| good	2.172 \| good	15.425 \| good	0.213 \| good
2025-12-08T02:00:00.000Z	54 \| moderate	11.107 \| good	49.627 \| good	5.159 \| good	2.132 \| good	17.063 \| good	0.244 \| good
2025-12-08T03:00:00.000Z	52 \| moderate	9.97 \| good	44.413 \| good	6.297 \| good	2.092 \| good	18.702 \| good	0.274 \| good
2025-12-08T04:00:00.000Z	49 \| good	9.487 \| good	42.268 \| good	6.218 \| good	2.242 \| good	18.655 \| good	0.284 \| good
2025-12-08T05:00:00.000Z	49 \| good	8.721 \| good	38.178 \| good	5.769 \| good	2.392 \| good	18.608 \| good	0.294 \| good
2025-12-08T06:00:00.000Z	38 \| good	6.864 \| good	30.621 \| good	4.721 \| good	2.543 \| good	18.561 \| good	0.304 \| good
2025-12-08T07:00:00.000Z	44 \| good	8.127 \| good	35.988 \| good	4.082 \| good	2.453 \| good	18.247 \| good	0.3 \| good
2025-12-08T08:00:00.000Z	49 \| good	9.19 \| good	40.562 \| good	4.304 \| good	2.364 \| good	17.934 \| good	0.295 \| good
2025-12-08T09:00:00.000Z	52 \| moderate	9.817 \| good	43.032 \| good	3.932 \| good	2.274 \| good	17.62 \| good	0.29 \| good
2025-12-08T10:00:00.000Z	52 \| moderate	9.889 \| good	43.758 \| good	3.259 \| good	2.115 \| good	16.886 \| good	0.284 \| good
2025-12-08T11:00:00.000Z	54 \| moderate	10.831 \| good	48.311 \| good	2.629 \| good	1.956 \| good	16.152 \| good	0.277 \| good
2025-12-08T12:00:00.000Z	56 \| moderate	11.785 \| good	52.883 \| good	2.233 \| good	1.796 \| good	15.418 \| good	0.271 \| good
2025-12-08T13:00:00.000Z	54 \| moderate	10.52 \| good	47.181 \| good	1.686 \| good	1.848 \| good	15.196 \| good	0.277 \| good
2025-12-08T14:00:00.000Z	58 \| moderate	12.986 \| fine	57.899 \| fine	1.592 \| good	1.901 \| good	14.974 \| good	0.284 \| good
2025-12-08T15:00:00.000Z	54 \| moderate	11.06 \| good	49.625 \| good	2.661 \| good	1.953 \| good	14.753 \| good	0.291 \| good
2025-12-08T16:00:00.000Z	60 \| moderate	14.063 \| fine	62.93 \| fine	5.713 \| good	2.435 \| good	14.519 \| good	0.279 \| good
2025-12-08T17:00:00.000Z	60 \| moderate	13.663 \| fine	61.118 \| fine	10.045 \| good	2.916 \| good	14.285 \| good	0.267 \| good
2025-12-08T18:00:00.000Z	60 \| moderate	13.643 \| fine	60.106 \| fine	10.17 \| good	3.398 \| good	14.051 \| good	0.255 \| good
2025-12-08T19:00:00.000Z	60 \| moderate	14.084 \| fine	62.205 \| fine	11.387 \| good	3.24 \| good	12.546 \| good	0.228 \| good
2025-12-08T20:00:00.000Z	60 \| moderate	13.68 \| fine	60.594 \| fine	11.633 \| good	3.082 \| good	11.042 \| good	0.201 \| good
2025-12-08T21:00:00.000Z	66 \| moderate	16.616 \| fine	73.41 \| fine	10.873 \| good	2.923 \| good	9.537 \| good	0.174 \| good
2025-12-08T22:00:00.000Z	67 \| moderate	17.666 \| fine	77.853 \| fine	10.918 \| good	2.726 \| good	10.186 \| good	0.173 \| good
2025-12-08T23:00:00.000Z	66 \| moderate	16.603 \| fine	73.361 \| fine	9.532 \| good	2.529 \| good	10.835 \| good	0.171 \| good
2025-12-09T00:00:00.000Z	60 \| moderate	14.169 \| fine	63.156 \| fine	10.37 \| good	2.333 \| good	11.483 \| good	0.17 \| good
2025-12-09T01:00:00.000Z	56 \| moderate	11.909 \| good	53.143 \| good	8.056 \| good	2.195 \| good	13.72 \| good	0.202 \| good
2025-12-09T02:00:00.000Z	56 \| moderate	11.873 \| good	53.068 \| good	5.803 \| good	2.058 \| good	15.956 \| good	0.234 \| good
2025-12-09T03:00:00.000Z	54 \| moderate	10.979 \| good	48.65 \| good	5.375 \| good	1.92 \| good	18.193 \| good	0.267 \| good
2025-12-09T04:00:00.000Z	52 \| moderate	10.349 \| good	46.166 \| good	4.539 \| good	2.026 \| good	17.627 \| good	0.276 \| good
2025-12-09T05:00:00.000Z	49 \| good	9.351 \| good	41.738 \| good	4.574 \| good	2.132 \| good	17.061 \| good	0.286 \| good
2025-12-09T06:00:00.000Z	49 \| good	9.238 \| good	40.728 \| good	5.055 \| good	2.238 \| good	16.495 \| good	0.295 \| good
2025-12-09T07:00:00.000Z	33 \| good	6.27 \| good	27.359 \| good	5.246 \| good	2.136 \| good	15.868 \| good	0.294 \| good
2025-12-09T08:00:00.000Z	33 \| good	5.599 \| good	24.318 \| good	4.991 \| good	2.034 \| good	15.24 \| good	0.293 \| good
2025-12-09T09:00:00.000Z	38 \| good	6.951 \| good	30.791 \| good	4.31 \| good	1.932 \| good	14.613 \| good	0.292 \| good
2025-12-09T10:00:00.000Z	44 \| good	7.502 \| good	33.037 \| good	3.486 \| good	1.78 \| good	13.878 \| good	0.281 \| good
2025-12-09T11:00:00.000Z	38 \| good	6.993 \| good	30.268 \| good	2.963 \| good	1.629 \| good	13.143 \| good	0.269 \| good
2025-12-09T12:00:00.000Z	44 \| good	7.561 \| good	33.419 \| good	2.265 \| good	1.477 \| good	12.408 \| good	0.257 \| good
2025-12-09T13:00:00.000Z	38 \| good	7.034 \| good	30.699 \| good	1.758 \| good	1.568 \| good	12.738 \| good	0.256 \| good
2025-12-09T14:00:00.000Z	49 \| good	8.76 \| good	38.473 \| good	1.648 \| good	1.659 \| good	13.067 \| good	0.254 \| good

San Carlos

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near San Carlos, 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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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 Carlos, California get updated?

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

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

San Carlos, California experienced its worst air quality at 08:00:00, 2025-12-07.

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

The best air quality in San Carlos, California was observed at 12:00:00 on 2025-12-07.

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

The air quality in San Carlos, California right now is Moderate, with an AQI of 66.

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

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

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

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

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

San Carlos, California currently has a PM_2.5 concentration of 17.013 μg/m³.

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

San Carlos, California currently has a PM₁₀ concentration of 56.396 μg/m³.

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

The current carbon monoxide (CO) level in San Carlos, California is 0.305 ppm.

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

The current sulfur dioxide (SO₂) concentration in San Carlos, California is 0.375 ppb.

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

San Carlos, California currently has an ozone (O₃) concentration of 4.444 ppm.

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

The current level of nitrogen dioxide (NO₂) in San Carlos, California is 11.538 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T15:00:00.000Z	49 \| good	8.587 \| good	36.619 \| good	3.206 \| good	0.466 \| good	15.142 \| good	0.575 \| good
2025-12-05T16:00:00.000Z	44 \| good	7.878 \| good	36.22 \| good	5.809 \| good	0.455 \| good	17.265 \| good	0.854 \| good
2025-12-05T17:00:00.000Z	44 \| good	7.738 \| good	34.669 \| good	5.802 \| good	0.444 \| good	18.658 \| good	0.601 \| good
2025-12-05T18:00:00.000Z	44 \| good	7.688 \| good	34.534 \| good	8.586 \| good	0.474 \| good	13.027 \| good	0.4 \| good
2025-12-05T19:00:00.000Z	44 \| good	7.727 \| good	34.047 \| good	8.645 \| good	0.489 \| good	12.776 \| good	0.4 \| good
2025-12-05T20:00:00.000Z	62 \| moderate	15.131 \| fine	59.466 \| fine	7.684 \| good	0.44 \| good	11.406 \| good	0.302 \| good
2025-12-05T21:00:00.000Z	62 \| moderate	14.868 \| fine	67.995 \| fine	12.256 \| good	0.418 \| good	11.777 \| good	0.302 \| good
2025-12-05T22:00:00.000Z	66 \| moderate	17.138 \| fine	65.401 \| fine	14.05 \| good	0.559 \| good	10.674 \| good	0.212 \| good
2025-12-05T23:00:00.000Z	81 \| moderate	24.379 \| fine	115.465 \| fine	14.83 \| good	0.508 \| good	10.427 \| good	0.214 \| good
2025-12-06T00:00:00.000Z	64 \| moderate	16.257 \| fine	77.936 \| fine	13.103 \| good	0.486 \| good	11.573 \| good	0.211 \| good
2025-12-06T01:00:00.000Z	62 \| moderate	14.704 \| fine	64.479 \| fine	12.988 \| good	0.455 \| good	13.46 \| good	0.215 \| good
2025-12-06T02:00:00.000Z	69 \| moderate	18.718 \| fine	70.661 \| fine	10.162 \| good	0.434 \| good	15.373 \| good	0.307 \| good
2025-12-06T03:00:00.000Z	69 \| moderate	19.496 \| fine	86.476 \| fine	8.067 \| good	0.403 \| good	20.864 \| good	0.492 \| good
2025-12-06T04:00:00.000Z	75 \| moderate	21.892 \| fine	71.557 \| fine	8.063 \| good	0.419 \| good	21.177 \| good	0.588 \| good
2025-12-06T05:00:00.000Z	75 \| moderate	22.155 \| fine	94.764 \| fine	3.565 \| good	0.458 \| good	21.025 \| good	0.761 \| good
2025-12-06T06:00:00.000Z	73 \| moderate	20.511 \| fine	86.256 \| fine	1.788 \| good	0.444 \| good	19.391 \| good	0.853 \| good
2025-12-06T07:00:00.000Z	67 \| moderate	18.144 \| fine	63.824 \| fine	1.66 \| good	0.463 \| good	19.304 \| good	0.845 \| good
2025-12-06T08:00:00.000Z	73 \| moderate	20.848 \| fine	79.737 \| fine	1.876 \| good	0.413 \| good	17.126 \| good	0.571 \| good
2025-12-06T09:00:00.000Z	73 \| moderate	21.495 \| fine	85.096 \| fine	1.881 \| good	0.421 \| good	17.136 \| good	0.571 \| good
2025-12-06T10:00:00.000Z	73 \| moderate	21.223 \| fine	86.123 \| fine	1.858 \| good	0.912 \| good	5.221 \| good	0.43 \| good
2025-12-06T11:00:00.000Z	67 \| moderate	17.759 \| fine	53.81 \| good	1.956 \| good	0.851 \| good	5.053 \| good	0.381 \| good
2025-12-06T12:00:00.000Z	60 \| moderate	14.399 \| fine	18.294 \| good	5.024 \| good	0.328 \| good	9.467 \| good	0.366 \| good
2025-12-06T13:00:00.000Z	64 \| moderate	16.315 \| fine	74.049 \| fine	1.813 \| good	0.378 \| good	13.876 \| good	0.298 \| good
2025-12-06T14:00:00.000Z	58 \| moderate	13.369 \| fine	52.786 \| good	2.677 \| good	0.516 \| good	9.51 \| good	0.202 \| good
2025-12-06T15:00:00.000Z	56 \| moderate	11.668 \| good	40.549 \| good	4.479 \| good	0.403 \| good	9.152 \| good	0.203 \| good
2025-12-06T16:00:00.000Z	66 \| moderate	17.437 \| fine	74.727 \| fine	6.306 \| good	0.374 \| good	7.299 \| good	0.207 \| good
2025-12-06T17:00:00.000Z	64 \| moderate	16.012 \| fine	79.022 \| fine	10.844 \| good	0.428 \| good	7.896 \| good	0.213 \| good
2025-12-06T18:00:00.000Z	62 \| moderate	15.407 \| fine	56.236 \| fine	10.761 \| good	0.5 \| good	6.585 \| good	0.213 \| good
2025-12-06T19:00:00.000Z	62 \| moderate	15.078 \| fine	71.258 \| fine	11.826 \| good	0.517 \| good	6.4 \| good	0.218 \| good
2025-12-06T20:00:00.000Z	56 \| moderate	11.561 \| good	28.813 \| good	10.963 \| good	0.544 \| good	5.298 \| good	0.214 \| good
2025-12-06T21:00:00.000Z	64 \| moderate	15.8 \| fine	68.34 \| fine	12.787 \| good	0.65 \| good	6.112 \| good	0.218 \| good
2025-12-06T22:00:00.000Z	66 \| moderate	17.13 \| fine	70.442 \| fine	12.849 \| good	0.668 \| good	6.133 \| good	0.215 \| good
2025-12-06T23:00:00.000Z	69 \| moderate	19.166 \| fine	66.388 \| fine	12.954 \| good	0.59 \| good	5.908 \| good	0.212 \| good
2025-12-07T00:00:00.000Z	64 \| moderate	16.466 \| fine	71.07 \| fine	12.913 \| good	0.494 \| good	9.262 \| good	0.212 \| good
2025-12-07T01:00:00.000Z	62 \| moderate	15.479 \| fine	66.709 \| fine	12.927 \| good	0.452 \| good	11.331 \| good	0.213 \| good
2025-12-07T02:00:00.000Z	75 \| moderate	21.678 \| fine	73.444 \| fine	10.933 \| good	0.417 \| good	10.252 \| good	0.217 \| good
2025-12-07T03:00:00.000Z	67 \| moderate	18.297 \| fine	55.227 \| fine	8.102 \| good	0.432 \| good	11.959 \| good	0.302 \| good
2025-12-07T04:00:00.000Z	66 \| moderate	17.302 \| fine	63.936 \| fine	8.014 \| good	0.401 \| good	16.533 \| good	0.576 \| good
2025-12-07T05:00:00.000Z	60 \| moderate	14.351 \| fine	68.858 \| fine	7.068 \| good	0.427 \| good	16.224 \| good	0.665 \| good
2025-12-07T06:00:00.000Z	64 \| moderate	16.273 \| fine	67.955 \| fine	5.251 \| good	0.426 \| good	14.006 \| good	0.669 \| good
2025-12-07T07:00:00.000Z	69 \| moderate	18.835 \| fine	74.927 \| fine	3.521 \| good	0.384 \| good	13.911 \| good	0.664 \| good
2025-12-07T08:00:00.000Z	77 \| moderate	21.117 \| fine	107.48 \| fine	1.844 \| good	0.374 \| good	13.849 \| good	0.664 \| good
2025-12-07T09:00:00.000Z	67 \| moderate	18.046 \| fine	79.308 \| fine	1.756 \| good	0.383 \| good	13.855 \| good	0.664 \| good
2025-12-07T10:00:00.000Z	67 \| moderate	17.577 \| fine	77.497 \| fine	1.801 \| good	0.482 \| good	3.938 \| good	0.269 \| good
2025-12-07T11:00:00.000Z	67 \| moderate	18.102 \| fine	64.029 \| fine	1.732 \| good	0.508 \| good	3.337 \| good	0.257 \| good
2025-12-07T12:00:00.000Z	52 \| moderate	10.467 \| good	20.492 \| good	5.151 \| good	0.347 \| good	7.034 \| good	0.23 \| good
2025-12-07T13:00:00.000Z	66 \| moderate	17.013 \| fine	56.396 \| fine	4.444 \| good	0.375 \| good	11.538 \| good	0.305 \| good
2025-12-07T14:00:00.000Z	52 \| moderate	10.443 \| good	29.03 \| good	4.491 \| good	0.457 \| good	9.979 \| good	0.308 \| good
2025-12-07T14:00:00.000Z	66 \| moderate	17.013 \| fine	56.396 \| fine	4.444 \| good	0.375 \| good	11.538 \| good	0.305 \| good
2025-12-07T15:00:00.000Z	54 \| moderate	11.336 \| good	50.726 \| good	4.97 \| good	1.377 \| good	16.923 \| good	0.258 \| good
2025-12-07T16:00:00.000Z	56 \| moderate	12.189 \| fine	54.915 \| good	7.558 \| good	1.519 \| good	15.771 \| good	0.263 \| good
2025-12-07T17:00:00.000Z	56 \| moderate	12.453 \| fine	55.759 \| fine	7.766 \| good	1.661 \| good	14.62 \| good	0.268 \| good
2025-12-07T18:00:00.000Z	56 \| moderate	11.941 \| good	53.338 \| good	9.026 \| good	1.803 \| good	13.468 \| good	0.273 \| good
2025-12-07T19:00:00.000Z	54 \| moderate	10.695 \| good	47.554 \| good	11.215 \| good	2.017 \| good	12.493 \| good	0.247 \| good
2025-12-07T20:00:00.000Z	56 \| moderate	11.762 \| good	52.386 \| good	11.267 \| good	2.232 \| good	11.519 \| good	0.221 \| good
2025-12-07T21:00:00.000Z	58 \| moderate	12.888 \| fine	56.843 \| fine	11.371 \| good	2.446 \| good	10.544 \| good	0.195 \| good
2025-12-07T22:00:00.000Z	58 \| moderate	12.827 \| fine	56.881 \| fine	12.357 \| good	2.368 \| good	11.625 \| good	0.191 \| good
2025-12-07T23:00:00.000Z	58 \| moderate	12.565 \| fine	56.259 \| fine	11.31 \| good	2.29 \| good	12.705 \| good	0.187 \| good
2025-12-08T00:00:00.000Z	54 \| moderate	10.869 \| good	48.195 \| good	11.231 \| good	2.212 \| good	13.786 \| good	0.183 \| good
2025-12-08T01:00:00.000Z	49 \| good	9.084 \| good	40.205 \| good	9.69 \| good	2.172 \| good	15.425 \| good	0.213 \| good
2025-12-08T02:00:00.000Z	54 \| moderate	11.107 \| good	49.627 \| good	5.159 \| good	2.132 \| good	17.063 \| good	0.244 \| good
2025-12-08T03:00:00.000Z	52 \| moderate	9.97 \| good	44.413 \| good	6.297 \| good	2.092 \| good	18.702 \| good	0.274 \| good
2025-12-08T04:00:00.000Z	49 \| good	9.487 \| good	42.268 \| good	6.218 \| good	2.242 \| good	18.655 \| good	0.284 \| good
2025-12-08T05:00:00.000Z	49 \| good	8.721 \| good	38.178 \| good	5.769 \| good	2.392 \| good	18.608 \| good	0.294 \| good
2025-12-08T06:00:00.000Z	38 \| good	6.864 \| good	30.621 \| good	4.721 \| good	2.543 \| good	18.561 \| good	0.304 \| good
2025-12-08T07:00:00.000Z	44 \| good	8.127 \| good	35.988 \| good	4.082 \| good	2.453 \| good	18.247 \| good	0.3 \| good
2025-12-08T08:00:00.000Z	49 \| good	9.19 \| good	40.562 \| good	4.304 \| good	2.364 \| good	17.934 \| good	0.295 \| good
2025-12-08T09:00:00.000Z	52 \| moderate	9.817 \| good	43.032 \| good	3.932 \| good	2.274 \| good	17.62 \| good	0.29 \| good
2025-12-08T10:00:00.000Z	52 \| moderate	9.889 \| good	43.758 \| good	3.259 \| good	2.115 \| good	16.886 \| good	0.284 \| good
2025-12-08T11:00:00.000Z	54 \| moderate	10.831 \| good	48.311 \| good	2.629 \| good	1.956 \| good	16.152 \| good	0.277 \| good
2025-12-08T12:00:00.000Z	56 \| moderate	11.785 \| good	52.883 \| good	2.233 \| good	1.796 \| good	15.418 \| good	0.271 \| good
2025-12-08T13:00:00.000Z	54 \| moderate	10.52 \| good	47.181 \| good	1.686 \| good	1.848 \| good	15.196 \| good	0.277 \| good
2025-12-08T14:00:00.000Z	58 \| moderate	12.986 \| fine	57.899 \| fine	1.592 \| good	1.901 \| good	14.974 \| good	0.284 \| good
2025-12-08T15:00:00.000Z	54 \| moderate	11.06 \| good	49.625 \| good	2.661 \| good	1.953 \| good	14.753 \| good	0.291 \| good
2025-12-08T16:00:00.000Z	60 \| moderate	14.063 \| fine	62.93 \| fine	5.713 \| good	2.435 \| good	14.519 \| good	0.279 \| good
2025-12-08T17:00:00.000Z	60 \| moderate	13.663 \| fine	61.118 \| fine	10.045 \| good	2.916 \| good	14.285 \| good	0.267 \| good
2025-12-08T18:00:00.000Z	60 \| moderate	13.643 \| fine	60.106 \| fine	10.17 \| good	3.398 \| good	14.051 \| good	0.255 \| good
2025-12-08T19:00:00.000Z	60 \| moderate	14.084 \| fine	62.205 \| fine	11.387 \| good	3.24 \| good	12.546 \| good	0.228 \| good
2025-12-08T20:00:00.000Z	60 \| moderate	13.68 \| fine	60.594 \| fine	11.633 \| good	3.082 \| good	11.042 \| good	0.201 \| good
2025-12-08T21:00:00.000Z	66 \| moderate	16.616 \| fine	73.41 \| fine	10.873 \| good	2.923 \| good	9.537 \| good	0.174 \| good
2025-12-08T22:00:00.000Z	67 \| moderate	17.666 \| fine	77.853 \| fine	10.918 \| good	2.726 \| good	10.186 \| good	0.173 \| good
2025-12-08T23:00:00.000Z	66 \| moderate	16.603 \| fine	73.361 \| fine	9.532 \| good	2.529 \| good	10.835 \| good	0.171 \| good
2025-12-09T00:00:00.000Z	60 \| moderate	14.169 \| fine	63.156 \| fine	10.37 \| good	2.333 \| good	11.483 \| good	0.17 \| good
2025-12-09T01:00:00.000Z	56 \| moderate	11.909 \| good	53.143 \| good	8.056 \| good	2.195 \| good	13.72 \| good	0.202 \| good
2025-12-09T02:00:00.000Z	56 \| moderate	11.873 \| good	53.068 \| good	5.803 \| good	2.058 \| good	15.956 \| good	0.234 \| good
2025-12-09T03:00:00.000Z	54 \| moderate	10.979 \| good	48.65 \| good	5.375 \| good	1.92 \| good	18.193 \| good	0.267 \| good
2025-12-09T04:00:00.000Z	52 \| moderate	10.349 \| good	46.166 \| good	4.539 \| good	2.026 \| good	17.627 \| good	0.276 \| good
2025-12-09T05:00:00.000Z	49 \| good	9.351 \| good	41.738 \| good	4.574 \| good	2.132 \| good	17.061 \| good	0.286 \| good
2025-12-09T06:00:00.000Z	49 \| good	9.238 \| good	40.728 \| good	5.055 \| good	2.238 \| good	16.495 \| good	0.295 \| good
2025-12-09T07:00:00.000Z	33 \| good	6.27 \| good	27.359 \| good	5.246 \| good	2.136 \| good	15.868 \| good	0.294 \| good
2025-12-09T08:00:00.000Z	33 \| good	5.599 \| good	24.318 \| good	4.991 \| good	2.034 \| good	15.24 \| good	0.293 \| good
2025-12-09T09:00:00.000Z	38 \| good	6.951 \| good	30.791 \| good	4.31 \| good	1.932 \| good	14.613 \| good	0.292 \| good
2025-12-09T10:00:00.000Z	44 \| good	7.502 \| good	33.037 \| good	3.486 \| good	1.78 \| good	13.878 \| good	0.281 \| good
2025-12-09T11:00:00.000Z	38 \| good	6.993 \| good	30.268 \| good	2.963 \| good	1.629 \| good	13.143 \| good	0.269 \| good
2025-12-09T12:00:00.000Z	44 \| good	7.561 \| good	33.419 \| good	2.265 \| good	1.477 \| good	12.408 \| good	0.257 \| good
2025-12-09T13:00:00.000Z	38 \| good	7.034 \| good	30.699 \| good	1.758 \| good	1.568 \| good	12.738 \| good	0.256 \| good
2025-12-09T14:00:00.000Z	49 \| good	8.76 \| good	38.473 \| good	1.648 \| good	1.659 \| good	13.067 \| good	0.254 \| good

Current air quality index in San Carlos, California today

Common air pollutants in San Carlos, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live San Carlos, California air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

Belmont, California

Redwood City, California

Foster City, California

North Fair Oaks, California

San Mateo, California

Menlo Park, California

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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