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

San Carlos, California currently has a PM10 concentration of 17.772 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 0.512 ppb.

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

San Carlos, California currently has an ozone (O3) concentration of 28.828 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 4.038 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 3.826 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)

Good

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)

5.46 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

23.86 μg/m³

155

255

425

605+

Ozone (O₃)

31.17 ppb

201

201+

Sulfur Dioxide (SO₂)

0.48 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.94 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2025-10-21T06:00:00.000Z	38 \| good	7.16 \| good	31.295 \| good	24.77 \| good	0.788 \| good	19.79 \| good	0.629 \| good
2025-10-21T07:00:00.000Z	38 \| good	7.239 \| good	32.145 \| good	27.147 \| good	0.757 \| good	16.645 \| good	0.57 \| good
2025-10-21T08:00:00.000Z	33 \| good	6.426 \| good	29.184 \| good	25.83 \| good	0.773 \| good	14.214 \| good	0.552 \| good
2025-10-21T09:00:00.000Z	33 \| good	5.515 \| good	23.152 \| good	19.015 \| good	0.817 \| good	12.732 \| good	0.429 \| good
2025-10-21T10:00:00.000Z	22 \| good	4.32 \| good	18.73 \| good	16.022 \| good	0.849 \| good	12.178 \| good	0.414 \| good
2025-10-21T11:00:00.000Z	16 \| good	2.893 \| good	11.959 \| good	11.326 \| good	0.822 \| good	13.691 \| good	0.396 \| good
2025-10-21T12:00:00.000Z	16 \| good	3.15 \| good	12.958 \| good	14.793 \| good	0.821 \| good	12.412 \| good	0.395 \| good
2025-10-21T13:00:00.000Z	16 \| good	3.136 \| good	12.872 \| good	10.878 \| good	0.875 \| good	12.835 \| good	0.508 \| good
2025-10-21T14:00:00.000Z	22 \| good	4.135 \| good	18.56 \| good	9.714 \| good	0.666 \| good	13.261 \| good	0.595 \| good
2025-10-21T15:00:00.000Z	38 \| good	6.661 \| good	29.55 \| good	9.027 \| good	0.761 \| good	20.418 \| good	0.543 \| good
2025-10-21T16:00:00.000Z	33 \| good	6.358 \| good	28.522 \| good	9.24 \| good	0.776 \| good	20.624 \| good	0.715 \| good
2025-10-21T17:00:00.000Z	49 \| good	8.537 \| good	37.882 \| good	16.474 \| good	0.896 \| good	19.661 \| good	0.873 \| good
2025-10-21T18:00:00.000Z	52 \| moderate	10.484 \| good	46.311 \| good	15.179 \| good	1.552 \| good	17.987 \| good	0.416 \| good
2025-10-21T19:00:00.000Z	52 \| moderate	9.892 \| good	44.039 \| good	23.233 \| good	1.519 \| good	13.889 \| good	0.378 \| good
2025-10-21T20:00:00.000Z	52 \| moderate	9.957 \| good	43.835 \| good	30.544 \| good	1.168 \| good	9.725 \| good	0.282 \| good
2025-10-21T21:00:00.000Z	52 \| moderate	9.776 \| good	43.608 \| good	33.474 \| good	1.101 \| good	5.805 \| good	0.257 \| good
2025-10-21T22:00:00.000Z	56 \| moderate	11.759 \| good	52.78 \| good	36.488 \| good	0.928 \| good	5.11 \| good	0.259 \| good
2025-10-21T23:00:00.000Z	58 \| moderate	12.557 \| fine	57.26 \| fine	38.972 \| good	0.811 \| good	3.036 \| good	0.233 \| good
2025-10-22T00:00:00.000Z	56 \| moderate	11.69 \| good	52.343 \| good	40.319 \| good	0.703 \| good	3.332 \| good	0.257 \| good
2025-10-22T01:00:00.000Z	56 \| moderate	11.557 \| good	51.882 \| good	39.679 \| good	0.767 \| good	4.587 \| good	0.278 \| good
2025-10-22T02:00:00.000Z	54 \| moderate	11.014 \| good	49.452 \| good	45.386 \| good	0.68 \| good	7.189 \| good	0.281 \| good
2025-10-22T03:00:00.000Z	33 \| good	5.886 \| good	26.127 \| good	30.137 \| good	1.27 \| good	19.06 \| good	0.241 \| good
2025-10-22T04:00:00.000Z	52 \| moderate	9.809 \| good	43.555 \| good	36.821 \| good	0.657 \| good	5.928 \| good	0.253 \| good
2025-10-22T05:00:00.000Z	52 \| moderate	9.933 \| good	43.998 \| good	35.787 \| good	0.681 \| good	5.746 \| good	0.236 \| good
2025-10-22T06:00:00.000Z	44 \| good	8.397 \| good	37.195 \| good	28.731 \| good	0.626 \| good	6.977 \| good	0.235 \| good
2025-10-22T07:00:00.000Z	44 \| good	8.302 \| good	37.281 \| good	30.99 \| good	0.607 \| good	5.273 \| good	0.234 \| good
2025-10-22T08:00:00.000Z	33 \| good	6.131 \| good	26.22 \| good	29.267 \| good	0.561 \| good	4.221 \| good	0.286 \| good
2025-10-22T09:00:00.000Z	33 \| good	6.111 \| good	26.804 \| good	25.615 \| good	0.561 \| good	3.84 \| good	0.194 \| good
2025-10-22T10:00:00.000Z	29 \| good	4.336 \| good	19.123 \| good	30.785 \| good	0.581 \| good	2.482 \| good	0.201 \| good
2025-10-22T11:00:00.000Z	31 \| good	4.369 \| good	18.969 \| good	33.775 \| good	0.606 \| good	2.893 \| good	0.184 \| good
2025-10-22T12:00:00.000Z	26 \| good	3.822 \| good	16.736 \| good	28.132 \| good	0.64 \| good	4.486 \| good	0.16 \| good
2025-10-22T13:00:00.000Z	27 \| good	3.826 \| good	17.772 \| good	28.828 \| good	0.512 \| good	4.038 \| good	0.177 \| good
2025-10-22T14:00:00.000Z	30 \| good	4.883 \| good	21.252 \| good	31.631 \| good	0.922 \| good	7.582 \| good	0.193 \| good
2025-10-22T15:00:00.000Z	30 \| good	4.853 \| good	21.063 \| good	31.845 \| good	0.881 \| good	6.704 \| good	0.211 \| good
2025-10-22T16:00:00.000Z	28 \| good	5.205 \| good	22.743 \| good	30.287 \| good	0.896 \| good	7.37 \| good	0.213 \| good
2025-10-22T17:00:00.000Z	38 \| good	6.714 \| good	30.043 \| good	30.864 \| good	1.211 \| good	8.111 \| good	0.293 \| good
2025-10-22T18:00:00.000Z	38 \| good	7.209 \| good	31.507 \| good	29.928 \| good	1.238 \| good	7.41 \| good	0.255 \| good
2025-10-22T19:00:00.000Z	38 \| good	6.59 \| good	29.855 \| good	32.658 \| good	0.625 \| good	6.745 \| good	0.254 \| good
2025-10-22T20:00:00.000Z	33 \| good	6.367 \| good	28.308 \| good	31.454 \| good	0.437 \| good	6.008 \| good	0.235 \| good
2025-10-22T21:00:00.000Z	38 \| good	7.1 \| good	31.831 \| good	33.644 \| good	0.415 \| good	4.571 \| good	0.212 \| good
2025-10-22T22:00:00.000Z	44 \| good	7.924 \| good	34.641 \| good	33.503 \| good	0.511 \| good	4.779 \| good	0.214 \| good
2025-10-22T23:00:00.000Z	44 \| good	7.537 \| good	33.145 \| good	34.398 \| good	0.645 \| good	4.546 \| good	0.214 \| good
2025-10-23T00:00:00.000Z	44 \| good	8.067 \| good	35.893 \| good	33.824 \| good	1.826 \| good	4.997 \| good	0.234 \| good
2025-10-23T01:00:00.000Z	44 \| good	8.02 \| good	35.614 \| good	32.698 \| good	1.394 \| good	5.835 \| good	0.216 \| good
2025-10-23T02:00:00.000Z	33 \| good	6.117 \| good	27.483 \| good	33.607 \| good	0.521 \| good	5.067 \| good	0.254 \| good
2025-10-23T03:00:00.000Z	33 \| good	6.212 \| good	28.081 \| good	29.834 \| good	0.463 \| good	6.658 \| good	0.255 \| good
2025-10-23T04:00:00.000Z	29 \| good	5.463 \| good	23.855 \| good	31.169 \| good	0.483 \| good	3.94 \| good	0.276 \| good
2025-10-23T05:00:00.000Z	29 \| good	5.452 \| good	24.043 \| good	31.385 \| good	0.53 \| good	5.787 \| good	0.275 \| good
2025-10-23T05:00:00.000Z	29 \| good	5.463 \| good	23.855 \| good	31.169 \| good	0.483 \| good	3.94 \| good	0.276 \| good
2025-10-22T15:00:00.000Z	32 \| good	0.819 \| good	2.934 \| good	35.196 \| good	0.544 \| good	3.767 \| good	0.132 \| good
2025-10-22T16:00:00.000Z	31 \| good	1.004 \| good	3.889 \| good	33.804 \| good	0.534 \| good	3.269 \| good	0.13 \| good
2025-10-22T17:00:00.000Z	31 \| good	1.836 \| good	7.513 \| good	34.079 \| good	0.524 \| good	2.771 \| good	0.128 \| good
2025-10-22T18:00:00.000Z	31 \| good	2.437 \| good	9.994 \| good	33.279 \| good	0.514 \| good	2.272 \| good	0.127 \| good
2025-10-22T19:00:00.000Z	31 \| good	3.012 \| good	12.974 \| good	32.943 \| good	0.53 \| good	2.051 \| good	0.126 \| good
2025-10-22T20:00:00.000Z	31 \| good	2.636 \| good	11.045 \| good	33.624 \| good	0.546 \| good	1.83 \| good	0.124 \| good
2025-10-22T21:00:00.000Z	31 \| good	1.922 \| good	7.932 \| good	33.97 \| good	0.562 \| good	1.609 \| good	0.123 \| good
2025-10-22T22:00:00.000Z	31 \| good	1.698 \| good	6.645 \| good	34.493 \| good	0.587 \| good	1.851 \| good	0.125 \| good
2025-10-22T23:00:00.000Z	32 \| good	2.046 \| good	8.485 \| good	34.915 \| good	0.612 \| good	2.092 \| good	0.126 \| good
2025-10-23T00:00:00.000Z	34 \| good	2.079 \| good	8.788 \| good	37.334 \| good	0.637 \| good	2.334 \| good	0.127 \| good
2025-10-23T01:00:00.000Z	32 \| good	1.424 \| good	5.902 \| good	35.418 \| good	0.721 \| good	4.381 \| good	0.138 \| good
2025-10-23T02:00:00.000Z	30 \| good	2.828 \| good	11.58 \| good	31.811 \| good	0.805 \| good	6.427 \| good	0.15 \| good
2025-10-23T03:00:00.000Z	28 \| good	3.724 \| good	16.047 \| good	29.757 \| good	0.889 \| good	8.474 \| good	0.161 \| good
2025-10-23T04:00:00.000Z	24 \| good	4.391 \| good	19.064 \| good	26.134 \| good	0.875 \| good	9.472 \| good	0.166 \| good
2025-10-23T05:00:00.000Z	19 \| good	1.803 \| good	7.412 \| good	21.428 \| good	0.86 \| good	10.47 \| good	0.172 \| good
2025-10-23T06:00:00.000Z	21 \| good	1.285 \| good	5.064 \| good	22.979 \| good	0.846 \| good	11.468 \| good	0.178 \| good
2025-10-23T07:00:00.000Z	23 \| good	1.105 \| good	4.421 \| good	25.073 \| good	0.774 \| good	10.193 \| good	0.172 \| good
2025-10-23T08:00:00.000Z	23 \| good	1.092 \| good	4.419 \| good	24.608 \| good	0.702 \| good	8.919 \| good	0.166 \| good
2025-10-23T09:00:00.000Z	20 \| good	0.719 \| good	2.91 \| good	22.303 \| good	0.631 \| good	7.644 \| good	0.16 \| good
2025-10-23T10:00:00.000Z	17 \| good	0.864 \| good	3.408 \| good	18.396 \| good	0.597 \| good	6.507 \| good	0.154 \| good
2025-10-23T11:00:00.000Z	16 \| good	1.251 \| good	5.038 \| good	17.147 \| good	0.563 \| good	5.369 \| good	0.148 \| good
2025-10-23T12:00:00.000Z	14 \| good	1.866 \| good	7.513 \| good	15.482 \| good	0.53 \| good	4.231 \| good	0.142 \| good
2025-10-23T13:00:00.000Z	19 \| good	1.904 \| good	7.9 \| good	20.487 \| good	0.559 \| good	5.224 \| good	0.15 \| good
2025-10-23T14:00:00.000Z	19 \| good	1.081 \| good	4.421 \| good	20.929 \| good	0.588 \| good	6.216 \| good	0.158 \| good
2025-10-23T15:00:00.000Z	24 \| good	1.323 \| good	5.404 \| good	25.539 \| good	0.617 \| good	7.209 \| good	0.166 \| good
2025-10-23T16:00:00.000Z	26 \| good	1.111 \| good	4.395 \| good	28.463 \| good	0.687 \| good	5.858 \| good	0.158 \| good
2025-10-23T17:00:00.000Z	28 \| good	3.022 \| good	12.918 \| good	30.245 \| good	0.756 \| good	4.506 \| good	0.151 \| good
2025-10-23T18:00:00.000Z	31 \| good	2.887 \| good	12.331 \| good	33.926 \| good	0.825 \| good	3.155 \| good	0.144 \| good
2025-10-23T19:00:00.000Z	33 \| good	2.774 \| good	11.852 \| good	35.916 \| good	0.869 \| good	2.926 \| good	0.142 \| good
2025-10-23T20:00:00.000Z	35 \| good	2.511 \| good	10.066 \| good	37.554 \| good	0.912 \| good	2.697 \| good	0.141 \| good
2025-10-23T21:00:00.000Z	34 \| good	2.754 \| good	11.744 \| good	37.409 \| good	0.956 \| good	2.468 \| good	0.139 \| good
2025-10-23T22:00:00.000Z	38 \| good	3.027 \| good	12.989 \| good	40.68 \| good	0.968 \| good	2.715 \| good	0.138 \| good
2025-10-23T23:00:00.000Z	38 \| good	2.991 \| good	12.501 \| good	41.334 \| good	0.981 \| good	2.962 \| good	0.137 \| good
2025-10-24T00:00:00.000Z	37 \| good	2.438 \| good	10.164 \| good	40.298 \| good	0.993 \| good	3.209 \| good	0.136 \| good
2025-10-24T01:00:00.000Z	30 \| good	2.758 \| good	11.982 \| good	32.245 \| good	0.992 \| good	5.933 \| good	0.15 \| good
2025-10-24T02:00:00.000Z	27 \| good	4.756 \| good	20.628 \| good	27.641 \| good	0.992 \| good	8.658 \| good	0.163 \| good
2025-10-24T03:00:00.000Z	28 \| good	2.967 \| good	12.506 \| good	29.679 \| good	0.991 \| good	11.382 \| good	0.177 \| good
2025-10-24T04:00:00.000Z	25 \| good	3.11 \| good	13.063 \| good	26.96 \| good	1.002 \| good	12.128 \| good	0.182 \| good
2025-10-24T05:00:00.000Z	21 \| good	2.007 \| good	8.418 \| good	22.631 \| good	1.013 \| good	12.874 \| good	0.187 \| good
2025-10-24T06:00:00.000Z	19 \| good	1.464 \| good	5.945 \| good	21.269 \| good	1.023 \| good	13.62 \| good	0.192 \| good
2025-10-24T07:00:00.000Z	19 \| good	1.275 \| good	5.424 \| good	20.511 \| good	0.949 \| good	13.035 \| good	0.185 \| good
2025-10-24T08:00:00.000Z	19 \| good	1.186 \| good	4.627 \| good	20.126 \| good	0.875 \| good	12.449 \| good	0.177 \| good
2025-10-24T09:00:00.000Z	18 \| good	1.24 \| good	5.007 \| good	19.213 \| good	0.801 \| good	11.863 \| good	0.169 \| good
2025-10-24T10:00:00.000Z	17 \| good	1.024 \| good	4.422 \| good	18.489 \| good	0.785 \| good	10.912 \| good	0.162 \| good
2025-10-24T11:00:00.000Z	19 \| good	1.035 \| good	4.422 \| good	21.073 \| good	0.77 \| good	9.961 \| good	0.155 \| good
2025-10-24T12:00:00.000Z	17 \| good	1.145 \| good	4.546 \| good	18.423 \| good	0.755 \| good	9.009 \| good	0.148 \| good
2025-10-24T13:00:00.000Z	16 \| good	1.021 \| good	4.096 \| good	16.56 \| good	0.791 \| good	9.121 \| good	0.152 \| good
2025-10-24T14:00:00.000Z	11 \| good	1.781 \| good	7.48 \| good	11.96 \| good	0.828 \| good	9.233 \| good	0.156 \| good

San Carlos

Empower business decisions with accurate air quality data

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

0.18ppm

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

Air quality levels in US

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

View Polluted Cities

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

View Clean Cities

Frequently asked questions

How 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 11:00:00, 2025-10-21.

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 02:00:00 on 2025-10-21.

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

The air quality in San Carlos, California right now is Good, with an AQI of 27.

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

In San Carlos, California, O3 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 3.826 μg/m³.

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

San Carlos, California currently has a PM₁₀ concentration of 17.772 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 0.177 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 0.512 ppb.

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

San Carlos, California currently has an ozone (O₃) concentration of 28.828 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 4.038 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-21T06:00:00.000Z	38 \| good	7.16 \| good	31.295 \| good	24.77 \| good	0.788 \| good	19.79 \| good	0.629 \| good
2025-10-21T07:00:00.000Z	38 \| good	7.239 \| good	32.145 \| good	27.147 \| good	0.757 \| good	16.645 \| good	0.57 \| good
2025-10-21T08:00:00.000Z	33 \| good	6.426 \| good	29.184 \| good	25.83 \| good	0.773 \| good	14.214 \| good	0.552 \| good
2025-10-21T09:00:00.000Z	33 \| good	5.515 \| good	23.152 \| good	19.015 \| good	0.817 \| good	12.732 \| good	0.429 \| good
2025-10-21T10:00:00.000Z	22 \| good	4.32 \| good	18.73 \| good	16.022 \| good	0.849 \| good	12.178 \| good	0.414 \| good
2025-10-21T11:00:00.000Z	16 \| good	2.893 \| good	11.959 \| good	11.326 \| good	0.822 \| good	13.691 \| good	0.396 \| good
2025-10-21T12:00:00.000Z	16 \| good	3.15 \| good	12.958 \| good	14.793 \| good	0.821 \| good	12.412 \| good	0.395 \| good
2025-10-21T13:00:00.000Z	16 \| good	3.136 \| good	12.872 \| good	10.878 \| good	0.875 \| good	12.835 \| good	0.508 \| good
2025-10-21T14:00:00.000Z	22 \| good	4.135 \| good	18.56 \| good	9.714 \| good	0.666 \| good	13.261 \| good	0.595 \| good
2025-10-21T15:00:00.000Z	38 \| good	6.661 \| good	29.55 \| good	9.027 \| good	0.761 \| good	20.418 \| good	0.543 \| good
2025-10-21T16:00:00.000Z	33 \| good	6.358 \| good	28.522 \| good	9.24 \| good	0.776 \| good	20.624 \| good	0.715 \| good
2025-10-21T17:00:00.000Z	49 \| good	8.537 \| good	37.882 \| good	16.474 \| good	0.896 \| good	19.661 \| good	0.873 \| good
2025-10-21T18:00:00.000Z	52 \| moderate	10.484 \| good	46.311 \| good	15.179 \| good	1.552 \| good	17.987 \| good	0.416 \| good
2025-10-21T19:00:00.000Z	52 \| moderate	9.892 \| good	44.039 \| good	23.233 \| good	1.519 \| good	13.889 \| good	0.378 \| good
2025-10-21T20:00:00.000Z	52 \| moderate	9.957 \| good	43.835 \| good	30.544 \| good	1.168 \| good	9.725 \| good	0.282 \| good
2025-10-21T21:00:00.000Z	52 \| moderate	9.776 \| good	43.608 \| good	33.474 \| good	1.101 \| good	5.805 \| good	0.257 \| good
2025-10-21T22:00:00.000Z	56 \| moderate	11.759 \| good	52.78 \| good	36.488 \| good	0.928 \| good	5.11 \| good	0.259 \| good
2025-10-21T23:00:00.000Z	58 \| moderate	12.557 \| fine	57.26 \| fine	38.972 \| good	0.811 \| good	3.036 \| good	0.233 \| good
2025-10-22T00:00:00.000Z	56 \| moderate	11.69 \| good	52.343 \| good	40.319 \| good	0.703 \| good	3.332 \| good	0.257 \| good
2025-10-22T01:00:00.000Z	56 \| moderate	11.557 \| good	51.882 \| good	39.679 \| good	0.767 \| good	4.587 \| good	0.278 \| good
2025-10-22T02:00:00.000Z	54 \| moderate	11.014 \| good	49.452 \| good	45.386 \| good	0.68 \| good	7.189 \| good	0.281 \| good
2025-10-22T03:00:00.000Z	33 \| good	5.886 \| good	26.127 \| good	30.137 \| good	1.27 \| good	19.06 \| good	0.241 \| good
2025-10-22T04:00:00.000Z	52 \| moderate	9.809 \| good	43.555 \| good	36.821 \| good	0.657 \| good	5.928 \| good	0.253 \| good
2025-10-22T05:00:00.000Z	52 \| moderate	9.933 \| good	43.998 \| good	35.787 \| good	0.681 \| good	5.746 \| good	0.236 \| good
2025-10-22T06:00:00.000Z	44 \| good	8.397 \| good	37.195 \| good	28.731 \| good	0.626 \| good	6.977 \| good	0.235 \| good
2025-10-22T07:00:00.000Z	44 \| good	8.302 \| good	37.281 \| good	30.99 \| good	0.607 \| good	5.273 \| good	0.234 \| good
2025-10-22T08:00:00.000Z	33 \| good	6.131 \| good	26.22 \| good	29.267 \| good	0.561 \| good	4.221 \| good	0.286 \| good
2025-10-22T09:00:00.000Z	33 \| good	6.111 \| good	26.804 \| good	25.615 \| good	0.561 \| good	3.84 \| good	0.194 \| good
2025-10-22T10:00:00.000Z	29 \| good	4.336 \| good	19.123 \| good	30.785 \| good	0.581 \| good	2.482 \| good	0.201 \| good
2025-10-22T11:00:00.000Z	31 \| good	4.369 \| good	18.969 \| good	33.775 \| good	0.606 \| good	2.893 \| good	0.184 \| good
2025-10-22T12:00:00.000Z	26 \| good	3.822 \| good	16.736 \| good	28.132 \| good	0.64 \| good	4.486 \| good	0.16 \| good
2025-10-22T13:00:00.000Z	27 \| good	3.826 \| good	17.772 \| good	28.828 \| good	0.512 \| good	4.038 \| good	0.177 \| good
2025-10-22T14:00:00.000Z	30 \| good	4.883 \| good	21.252 \| good	31.631 \| good	0.922 \| good	7.582 \| good	0.193 \| good
2025-10-22T15:00:00.000Z	30 \| good	4.853 \| good	21.063 \| good	31.845 \| good	0.881 \| good	6.704 \| good	0.211 \| good
2025-10-22T16:00:00.000Z	28 \| good	5.205 \| good	22.743 \| good	30.287 \| good	0.896 \| good	7.37 \| good	0.213 \| good
2025-10-22T17:00:00.000Z	38 \| good	6.714 \| good	30.043 \| good	30.864 \| good	1.211 \| good	8.111 \| good	0.293 \| good
2025-10-22T18:00:00.000Z	38 \| good	7.209 \| good	31.507 \| good	29.928 \| good	1.238 \| good	7.41 \| good	0.255 \| good
2025-10-22T19:00:00.000Z	38 \| good	6.59 \| good	29.855 \| good	32.658 \| good	0.625 \| good	6.745 \| good	0.254 \| good
2025-10-22T20:00:00.000Z	33 \| good	6.367 \| good	28.308 \| good	31.454 \| good	0.437 \| good	6.008 \| good	0.235 \| good
2025-10-22T21:00:00.000Z	38 \| good	7.1 \| good	31.831 \| good	33.644 \| good	0.415 \| good	4.571 \| good	0.212 \| good
2025-10-22T22:00:00.000Z	44 \| good	7.924 \| good	34.641 \| good	33.503 \| good	0.511 \| good	4.779 \| good	0.214 \| good
2025-10-22T23:00:00.000Z	44 \| good	7.537 \| good	33.145 \| good	34.398 \| good	0.645 \| good	4.546 \| good	0.214 \| good
2025-10-23T00:00:00.000Z	44 \| good	8.067 \| good	35.893 \| good	33.824 \| good	1.826 \| good	4.997 \| good	0.234 \| good
2025-10-23T01:00:00.000Z	44 \| good	8.02 \| good	35.614 \| good	32.698 \| good	1.394 \| good	5.835 \| good	0.216 \| good
2025-10-23T02:00:00.000Z	33 \| good	6.117 \| good	27.483 \| good	33.607 \| good	0.521 \| good	5.067 \| good	0.254 \| good
2025-10-23T03:00:00.000Z	33 \| good	6.212 \| good	28.081 \| good	29.834 \| good	0.463 \| good	6.658 \| good	0.255 \| good
2025-10-23T04:00:00.000Z	29 \| good	5.463 \| good	23.855 \| good	31.169 \| good	0.483 \| good	3.94 \| good	0.276 \| good
2025-10-23T05:00:00.000Z	29 \| good	5.452 \| good	24.043 \| good	31.385 \| good	0.53 \| good	5.787 \| good	0.275 \| good
2025-10-23T05:00:00.000Z	29 \| good	5.463 \| good	23.855 \| good	31.169 \| good	0.483 \| good	3.94 \| good	0.276 \| good
2025-10-22T15:00:00.000Z	32 \| good	0.819 \| good	2.934 \| good	35.196 \| good	0.544 \| good	3.767 \| good	0.132 \| good
2025-10-22T16:00:00.000Z	31 \| good	1.004 \| good	3.889 \| good	33.804 \| good	0.534 \| good	3.269 \| good	0.13 \| good
2025-10-22T17:00:00.000Z	31 \| good	1.836 \| good	7.513 \| good	34.079 \| good	0.524 \| good	2.771 \| good	0.128 \| good
2025-10-22T18:00:00.000Z	31 \| good	2.437 \| good	9.994 \| good	33.279 \| good	0.514 \| good	2.272 \| good	0.127 \| good
2025-10-22T19:00:00.000Z	31 \| good	3.012 \| good	12.974 \| good	32.943 \| good	0.53 \| good	2.051 \| good	0.126 \| good
2025-10-22T20:00:00.000Z	31 \| good	2.636 \| good	11.045 \| good	33.624 \| good	0.546 \| good	1.83 \| good	0.124 \| good
2025-10-22T21:00:00.000Z	31 \| good	1.922 \| good	7.932 \| good	33.97 \| good	0.562 \| good	1.609 \| good	0.123 \| good
2025-10-22T22:00:00.000Z	31 \| good	1.698 \| good	6.645 \| good	34.493 \| good	0.587 \| good	1.851 \| good	0.125 \| good
2025-10-22T23:00:00.000Z	32 \| good	2.046 \| good	8.485 \| good	34.915 \| good	0.612 \| good	2.092 \| good	0.126 \| good
2025-10-23T00:00:00.000Z	34 \| good	2.079 \| good	8.788 \| good	37.334 \| good	0.637 \| good	2.334 \| good	0.127 \| good
2025-10-23T01:00:00.000Z	32 \| good	1.424 \| good	5.902 \| good	35.418 \| good	0.721 \| good	4.381 \| good	0.138 \| good
2025-10-23T02:00:00.000Z	30 \| good	2.828 \| good	11.58 \| good	31.811 \| good	0.805 \| good	6.427 \| good	0.15 \| good
2025-10-23T03:00:00.000Z	28 \| good	3.724 \| good	16.047 \| good	29.757 \| good	0.889 \| good	8.474 \| good	0.161 \| good
2025-10-23T04:00:00.000Z	24 \| good	4.391 \| good	19.064 \| good	26.134 \| good	0.875 \| good	9.472 \| good	0.166 \| good
2025-10-23T05:00:00.000Z	19 \| good	1.803 \| good	7.412 \| good	21.428 \| good	0.86 \| good	10.47 \| good	0.172 \| good
2025-10-23T06:00:00.000Z	21 \| good	1.285 \| good	5.064 \| good	22.979 \| good	0.846 \| good	11.468 \| good	0.178 \| good
2025-10-23T07:00:00.000Z	23 \| good	1.105 \| good	4.421 \| good	25.073 \| good	0.774 \| good	10.193 \| good	0.172 \| good
2025-10-23T08:00:00.000Z	23 \| good	1.092 \| good	4.419 \| good	24.608 \| good	0.702 \| good	8.919 \| good	0.166 \| good
2025-10-23T09:00:00.000Z	20 \| good	0.719 \| good	2.91 \| good	22.303 \| good	0.631 \| good	7.644 \| good	0.16 \| good
2025-10-23T10:00:00.000Z	17 \| good	0.864 \| good	3.408 \| good	18.396 \| good	0.597 \| good	6.507 \| good	0.154 \| good
2025-10-23T11:00:00.000Z	16 \| good	1.251 \| good	5.038 \| good	17.147 \| good	0.563 \| good	5.369 \| good	0.148 \| good
2025-10-23T12:00:00.000Z	14 \| good	1.866 \| good	7.513 \| good	15.482 \| good	0.53 \| good	4.231 \| good	0.142 \| good
2025-10-23T13:00:00.000Z	19 \| good	1.904 \| good	7.9 \| good	20.487 \| good	0.559 \| good	5.224 \| good	0.15 \| good
2025-10-23T14:00:00.000Z	19 \| good	1.081 \| good	4.421 \| good	20.929 \| good	0.588 \| good	6.216 \| good	0.158 \| good
2025-10-23T15:00:00.000Z	24 \| good	1.323 \| good	5.404 \| good	25.539 \| good	0.617 \| good	7.209 \| good	0.166 \| good
2025-10-23T16:00:00.000Z	26 \| good	1.111 \| good	4.395 \| good	28.463 \| good	0.687 \| good	5.858 \| good	0.158 \| good
2025-10-23T17:00:00.000Z	28 \| good	3.022 \| good	12.918 \| good	30.245 \| good	0.756 \| good	4.506 \| good	0.151 \| good
2025-10-23T18:00:00.000Z	31 \| good	2.887 \| good	12.331 \| good	33.926 \| good	0.825 \| good	3.155 \| good	0.144 \| good
2025-10-23T19:00:00.000Z	33 \| good	2.774 \| good	11.852 \| good	35.916 \| good	0.869 \| good	2.926 \| good	0.142 \| good
2025-10-23T20:00:00.000Z	35 \| good	2.511 \| good	10.066 \| good	37.554 \| good	0.912 \| good	2.697 \| good	0.141 \| good
2025-10-23T21:00:00.000Z	34 \| good	2.754 \| good	11.744 \| good	37.409 \| good	0.956 \| good	2.468 \| good	0.139 \| good
2025-10-23T22:00:00.000Z	38 \| good	3.027 \| good	12.989 \| good	40.68 \| good	0.968 \| good	2.715 \| good	0.138 \| good
2025-10-23T23:00:00.000Z	38 \| good	2.991 \| good	12.501 \| good	41.334 \| good	0.981 \| good	2.962 \| good	0.137 \| good
2025-10-24T00:00:00.000Z	37 \| good	2.438 \| good	10.164 \| good	40.298 \| good	0.993 \| good	3.209 \| good	0.136 \| good
2025-10-24T01:00:00.000Z	30 \| good	2.758 \| good	11.982 \| good	32.245 \| good	0.992 \| good	5.933 \| good	0.15 \| good
2025-10-24T02:00:00.000Z	27 \| good	4.756 \| good	20.628 \| good	27.641 \| good	0.992 \| good	8.658 \| good	0.163 \| good
2025-10-24T03:00:00.000Z	28 \| good	2.967 \| good	12.506 \| good	29.679 \| good	0.991 \| good	11.382 \| good	0.177 \| good
2025-10-24T04:00:00.000Z	25 \| good	3.11 \| good	13.063 \| good	26.96 \| good	1.002 \| good	12.128 \| good	0.182 \| good
2025-10-24T05:00:00.000Z	21 \| good	2.007 \| good	8.418 \| good	22.631 \| good	1.013 \| good	12.874 \| good	0.187 \| good
2025-10-24T06:00:00.000Z	19 \| good	1.464 \| good	5.945 \| good	21.269 \| good	1.023 \| good	13.62 \| good	0.192 \| good
2025-10-24T07:00:00.000Z	19 \| good	1.275 \| good	5.424 \| good	20.511 \| good	0.949 \| good	13.035 \| good	0.185 \| good
2025-10-24T08:00:00.000Z	19 \| good	1.186 \| good	4.627 \| good	20.126 \| good	0.875 \| good	12.449 \| good	0.177 \| good
2025-10-24T09:00:00.000Z	18 \| good	1.24 \| good	5.007 \| good	19.213 \| good	0.801 \| good	11.863 \| good	0.169 \| good
2025-10-24T10:00:00.000Z	17 \| good	1.024 \| good	4.422 \| good	18.489 \| good	0.785 \| good	10.912 \| good	0.162 \| good
2025-10-24T11:00:00.000Z	19 \| good	1.035 \| good	4.422 \| good	21.073 \| good	0.77 \| good	9.961 \| good	0.155 \| good
2025-10-24T12:00:00.000Z	17 \| good	1.145 \| good	4.546 \| good	18.423 \| good	0.755 \| good	9.009 \| good	0.148 \| good
2025-10-24T13:00:00.000Z	16 \| good	1.021 \| good	4.096 \| good	16.56 \| good	0.791 \| good	9.121 \| good	0.152 \| good
2025-10-24T14:00:00.000Z	11 \| good	1.781 \| good	7.48 \| good	11.96 \| good	0.828 \| good	9.233 \| good	0.156 \| 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?

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

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?