What are the current PM10 levels at Foster City, California?

The current PM10 levels in Foster City, California are 25.717 μg/m3.

What are the current sulfur dioxide (SO2) levels at Foster City, California?

The current sulfur dioxide (SO2) levels in Foster City, California are 1.256 ppb.

What are the current ozone (O3) levels at Foster City, California?

The current ozone (O3) levels at Foster City, California is 25.543 ppm.

What are the current nitrogen dioxide (NO2) levels at Foster City, California?

The current nitrogen dioxide (NO2) levels at Foster City, California is 6.378 ppb.

Live air quality index in Foster City, California today

Name: Live air pollution levels in Foster City, California today
Creator: Ambee

Stay updated with real-time air quality in Foster City, 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

Foster City, California

Last updated: ... (Local time)

Major air pollutants in Foster City, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.82 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

25.72 μg/m³

155

255

425

605+

Ozone (O₃)

25.54 ppb

201

201+

Sulfur Dioxide (SO₂)

1.26 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.38 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Foster City, California

Get Live Pollen Counts

Foster City, California

Scroll To Air Quality Map

Track live Foster City, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T08:00:00.000Z	56 \| moderate	11.806 \| good	51.933 \| good	26.672 \| good	0.846 \| good	4.495 \| good	0.269 \| good
2025-06-04T09:00:00.000Z	58 \| moderate	12.856 \| fine	57.551 \| fine	26.226 \| good	0.847 \| good	3.21 \| good	0.23 \| good
2025-06-04T10:00:00.000Z	58 \| moderate	13.037 \| fine	58.489 \| fine	25.771 \| good	0.817 \| good	3.825 \| good	0.228 \| good
2025-06-04T11:00:00.000Z	56 \| moderate	12.479 \| fine	56.382 \| fine	27.29 \| good	0.804 \| good	4.444 \| good	0.225 \| good
2025-06-04T12:00:00.000Z	54 \| moderate	10.972 \| good	47.927 \| good	27.317 \| good	0.801 \| good	4.713 \| good	0.227 \| good
2025-06-04T13:00:00.000Z	44 \| good	7.984 \| good	34.995 \| good	22.402 \| good	0.718 \| good	2.623 \| good	0.111 \| good
2025-06-04T14:00:00.000Z	56 \| moderate	11.71 \| good	52.225 \| good	22.318 \| good	0.866 \| good	6.462 \| good	0.266 \| good
2025-06-04T15:00:00.000Z	60 \| moderate	14.128 \| fine	62.536 \| fine	25.066 \| good	0.901 \| good	8.249 \| good	0.293 \| good
2025-06-04T16:00:00.000Z	64 \| moderate	16.497 \| fine	73.289 \| fine	26.123 \| good	0.947 \| good	8.473 \| good	0.315 \| good
2025-06-04T17:00:00.000Z	66 \| moderate	16.854 \| fine	75.656 \| fine	27.708 \| good	0.853 \| good	6.438 \| good	0.328 \| good
2025-06-04T18:00:00.000Z	64 \| moderate	15.913 \| fine	70.818 \| fine	27.056 \| good	1.155 \| good	5.619 \| good	0.304 \| good
2025-06-04T19:00:00.000Z	64 \| moderate	16.019 \| fine	70.327 \| fine	28.424 \| good	1.762 \| good	5.655 \| good	0.285 \| good
2025-06-04T20:00:00.000Z	66 \| moderate	16.832 \| fine	75.028 \| fine	31.197 \| good	1.205 \| good	4.613 \| good	0.257 \| good
2025-06-04T21:00:00.000Z	64 \| moderate	16.046 \| fine	69.425 \| fine	32.694 \| good	1.076 \| good	4.215 \| good	0.29 \| good
2025-06-04T22:00:00.000Z	64 \| moderate	15.619 \| fine	69.887 \| fine	32.909 \| good	0.981 \| good	5.14 \| good	0.318 \| good
2025-06-04T23:00:00.000Z	64 \| moderate	16.209 \| fine	72.275 \| fine	34.105 \| good	0.884 \| good	5.044 \| good	0.294 \| good
2025-06-05T00:00:00.000Z	62 \| moderate	14.993 \| fine	66.211 \| fine	33.792 \| good	0.858 \| good	4.684 \| good	0.311 \| good
2025-06-05T01:00:00.000Z	60 \| moderate	14.149 \| fine	62.011 \| fine	32.392 \| good	0.853 \| good	5.243 \| good	0.294 \| good
2025-06-05T02:00:00.000Z	56 \| moderate	12.289 \| fine	54.477 \| good	32.458 \| good	0.947 \| good	5.563 \| good	0.269 \| good
2025-06-05T03:00:00.000Z	56 \| moderate	11.808 \| good	52.627 \| good	32.318 \| good	0.875 \| good	5.33 \| good	0.269 \| good
2025-06-05T04:00:00.000Z	54 \| moderate	11.046 \| good	48.846 \| good	32.017 \| good	0.796 \| good	6.074 \| good	0.269 \| good
2025-06-05T05:00:00.000Z	54 \| moderate	10.767 \| good	47.473 \| good	30.463 \| good	0.777 \| good	6.61 \| good	0.272 \| good
2025-06-05T06:00:00.000Z	52 \| moderate	10.232 \| good	45.216 \| good	29.434 \| good	0.742 \| good	3.707 \| good	0.254 \| good
2025-06-05T07:00:00.000Z	49 \| good	9.398 \| good	42.846 \| good	29.112 \| good	0.766 \| good	3.467 \| good	0.254 \| good
2025-06-05T08:00:00.000Z	49 \| good	8.693 \| good	38.058 \| good	27.986 \| good	0.772 \| good	3.425 \| good	0.251 \| good
2025-06-05T09:00:00.000Z	44 \| good	8.102 \| good	36.394 \| good	27.443 \| good	0.865 \| good	3.264 \| good	0.243 \| good
2025-06-05T10:00:00.000Z	49 \| good	9.301 \| good	42.935 \| good	26.548 \| good	1.092 \| good	3.578 \| good	0.212 \| good
2025-06-05T11:00:00.000Z	49 \| good	9.473 \| good	41.688 \| good	26.454 \| good	1.004 \| good	5.619 \| good	0.212 \| good
2025-06-05T12:00:00.000Z	49 \| good	8.826 \| good	38.183 \| good	25.412 \| good	1.223 \| good	5.524 \| good	0.212 \| good
2025-06-05T13:00:00.000Z	38 \| good	7.014 \| good	31.27 \| good	24.489 \| good	1.692 \| good	5.805 \| good	0.25 \| good
2025-06-05T14:00:00.000Z	27 \| good	5.29 \| good	23.693 \| good	26.414 \| good	1.277 \| good	6.245 \| good	0.283 \| good
2025-06-05T15:00:00.000Z	33 \| good	5.816 \| good	25.717 \| good	25.543 \| good	1.256 \| good	6.378 \| good	0.259 \| good
2025-06-05T16:00:00.000Z	33 \| good	6.24 \| good	27.205 \| good	26.39 \| good	1.272 \| good	6.79 \| good	0.259 \| good
2025-06-05T17:00:00.000Z	33 \| good	6.287 \| good	27.401 \| good	26.962 \| good	1.366 \| good	5.452 \| good	0.275 \| good
2025-06-05T18:00:00.000Z	38 \| good	7.204 \| good	32.407 \| good	27.442 \| good	1.254 \| good	5.607 \| good	0.285 \| good
2025-06-05T19:00:00.000Z	38 \| good	6.913 \| good	30.917 \| good	30.719 \| good	1.077 \| good	4.436 \| good	0.285 \| good
2025-06-05T20:00:00.000Z	49 \| good	8.98 \| good	40.043 \| good	30.711 \| good	0.682 \| good	4.065 \| good	0.285 \| good
2025-06-05T21:00:00.000Z	44 \| good	7.635 \| good	34.252 \| good	32.049 \| good	0.996 \| good	4.545 \| good	0.254 \| good
2025-06-05T22:00:00.000Z	33 \| good	5.85 \| good	25.571 \| good	33.736 \| good	0.767 \| good	5.227 \| good	0.266 \| good
2025-06-05T23:00:00.000Z	33 \| good	6.498 \| good	28.595 \| good	33.074 \| good	1.287 \| good	4.617 \| good	0.266 \| good
2025-06-06T00:00:00.000Z	38 \| good	6.926 \| good	30.81 \| good	33.568 \| good	0.961 \| good	3.38 \| good	0.266 \| good
2025-06-06T01:00:00.000Z	38 \| good	6.633 \| good	29.407 \| good	33.144 \| good	0.773 \| good	4.145 \| good	0.266 \| good
2025-06-06T02:00:00.000Z	38 \| good	6.505 \| good	29.196 \| good	32.072 \| good	0.795 \| good	4.277 \| good	0.263 \| good
2025-06-06T03:00:00.000Z	33 \| good	5.86 \| good	24.94 \| good	30.073 \| good	0.94 \| good	4.134 \| good	0.266 \| good
2025-06-06T04:00:00.000Z	27 \| good	5.078 \| good	22.612 \| good	29.042 \| good	0.896 \| good	3.91 \| good	0.266 \| good
2025-06-06T05:00:00.000Z	27 \| good	4.696 \| good	20.577 \| good	24.768 \| good	0.715 \| good	4.085 \| good	0.266 \| good
2025-06-06T06:00:00.000Z	27 \| good	4.651 \| good	20.246 \| good	22.481 \| good	0.573 \| good	4.011 \| good	0.266 \| good
2025-06-05T16:00:00.000Z	33 \| good	5.816 \| good	25.717 \| good	25.543 \| good	1.256 \| good	6.378 \| good	0.259 \| good
2025-06-05T17:00:00.000Z	52 \| moderate	10.044 \| good	44.734 \| good	30.004 \| good	0.487 \| good	1.483 \| good	0.102 \| good
2025-06-05T18:00:00.000Z	56 \| moderate	11.506 \| good	50.98 \| good	30.993 \| good	0.593 \| good	1.823 \| good	0.107 \| good
2025-06-05T19:00:00.000Z	58 \| moderate	12.54 \| fine	56.853 \| fine	30.282 \| good	0.391 \| good	0.721 \| good	0.095 \| good
2025-06-05T20:00:00.000Z	56 \| moderate	11.728 \| good	52.044 \| good	29.136 \| good	0.487 \| good	0.94 \| good	0.099 \| good
2025-06-05T21:00:00.000Z	54 \| moderate	11.273 \| good	49.897 \| good	28.635 \| good	0.582 \| good	1.16 \| good	0.103 \| good
2025-06-05T22:00:00.000Z	56 \| moderate	12.449 \| fine	56.855 \| fine	29.86 \| good	0.337 \| good	0.859 \| good	0.094 \| good
2025-06-05T23:00:00.000Z	56 \| moderate	12.27 \| fine	54.935 \| good	29.266 \| good	0.431 \| good	1.121 \| good	0.097 \| good
2025-06-06T00:00:00.000Z	54 \| moderate	10.817 \| good	47.906 \| good	29.25 \| good	0.525 \| good	1.384 \| good	0.101 \| good
2025-06-06T01:00:00.000Z	54 \| moderate	11.123 \| good	48.936 \| good	28.696 \| good	0.294 \| good	1.87 \| good	0.095 \| good
2025-06-06T02:00:00.000Z	56 \| moderate	12.224 \| fine	55.033 \| fine	29.007 \| good	0.401 \| good	2.495 \| good	0.099 \| good
2025-06-06T03:00:00.000Z	56 \| moderate	11.826 \| good	52.152 \| good	28.997 \| good	0.508 \| good	3.119 \| good	0.103 \| good
2025-06-06T04:00:00.000Z	54 \| moderate	11.259 \| good	49.922 \| good	29.228 \| good	0.388 \| good	2.528 \| good	0.095 \| good
2025-06-06T05:00:00.000Z	52 \| moderate	10.391 \| good	46.019 \| good	27.25 \| good	0.533 \| good	3.413 \| good	0.1 \| good
2025-06-06T06:00:00.000Z	52 \| moderate	9.801 \| good	43.834 \| good	26.59 \| good	0.677 \| good	4.298 \| good	0.104 \| good
2025-06-06T07:00:00.000Z	52 \| moderate	10.486 \| good	46.218 \| good	25.737 \| good	0.411 \| good	2.478 \| good	0.095 \| good
2025-06-06T08:00:00.000Z	54 \| moderate	10.677 \| good	47.324 \| good	25.538 \| good	0.566 \| good	3.413 \| good	0.099 \| good
2025-06-06T09:00:00.000Z	52 \| moderate	10.161 \| good	45.217 \| good	25.707 \| good	0.721 \| good	4.348 \| good	0.103 \| good
2025-06-06T10:00:00.000Z	49 \| good	9.17 \| good	40.775 \| good	25.643 \| good	0.399 \| good	1.907 \| good	0.093 \| good
2025-06-06T11:00:00.000Z	49 \| good	9.069 \| good	40.549 \| good	23.69 \| good	0.553 \| good	2.579 \| good	0.095 \| good
2025-06-06T12:00:00.000Z	49 \| good	9.301 \| good	41.183 \| good	24.827 \| good	0.708 \| good	3.252 \| good	0.098 \| good
2025-06-06T13:00:00.000Z	52 \| moderate	10.374 \| good	46.158 \| good	21.964 \| good	0.39 \| good	1.841 \| good	0.095 \| good
2025-06-06T14:00:00.000Z	56 \| moderate	11.973 \| good	53.741 \| good	22.415 \| good	0.554 \| good	2.379 \| good	0.098 \| good
2025-06-06T15:00:00.000Z	62 \| moderate	14.579 \| fine	65.013 \| fine	23.771 \| good	0.718 \| good	2.917 \| good	0.101 \| good
2025-06-06T16:00:00.000Z	60 \| moderate	14.33 \| fine	64.657 \| fine	25.056 \| good	0.474 \| good	1.636 \| good	0.101 \| good
2025-06-06T17:00:00.000Z	60 \| moderate	13.914 \| fine	62.255 \| fine	26.769 \| good	0.642 \| good	2.146 \| good	0.106 \| good
2025-06-06T18:00:00.000Z	62 \| moderate	14.608 \| fine	64.804 \| fine	29.17 \| good	0.811 \| good	2.657 \| good	0.11 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	14.735 \| fine	66.368 \| fine	30.585 \| good	0.567 \| good	1.018 \| good	0.095 \| good
2025-06-06T20:00:00.000Z	60 \| moderate	13.678 \| fine	60.734 \| fine	30.83 \| good	0.734 \| good	1.403 \| good	0.1 \| good
2025-06-06T21:00:00.000Z	58 \| moderate	13.01 \| fine	58.636 \| fine	28.813 \| good	0.9 \| good	1.789 \| good	0.104 \| good
2025-06-06T22:00:00.000Z	60 \| moderate	13.837 \| fine	62.728 \| fine	27.658 \| good	0.524 \| good	1.221 \| good	0.096 \| good
2025-06-06T23:00:00.000Z	60 \| moderate	14.091 \| fine	63.08 \| fine	26.372 \| good	0.681 \| good	1.669 \| good	0.101 \| good
2025-06-07T00:00:00.000Z	58 \| moderate	12.673 \| fine	56.989 \| fine	25.859 \| good	0.838 \| good	2.116 \| good	0.105 \| good
2025-06-07T01:00:00.000Z	56 \| moderate	12.339 \| fine	55.04 \| fine	25.628 \| good	0.508 \| good	3.775 \| good	0.106 \| good
2025-06-07T02:00:00.000Z	58 \| moderate	13.142 \| fine	59.078 \| fine	25.123 \| good	0.698 \| good	5.059 \| good	0.114 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	12.321 \| fine	55.162 \| fine	25.299 \| good	0.889 \| good	6.344 \| good	0.121 \| good
2025-06-07T04:00:00.000Z	54 \| moderate	11.262 \| good	49.947 \| good	25.254 \| good	0.764 \| good	6.147 \| good	0.114 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	10.365 \| good	45.986 \| good	24.663 \| good	1.011 \| good	8.136 \| good	0.123 \| good
2025-06-07T06:00:00.000Z	52 \| moderate	9.818 \| good	43.949 \| good	24.048 \| good	1.258 \| good	10.125 \| good	0.132 \| good
2025-06-07T07:00:00.000Z	52 \| moderate	10.399 \| good	46.07 \| good	25.204 \| good	0.905 \| good	6.474 \| good	0.116 \| good
2025-06-07T08:00:00.000Z	54 \| moderate	10.642 \| good	47.172 \| good	24.039 \| good	1.176 \| good	8.651 \| good	0.126 \| good
2025-06-07T09:00:00.000Z	52 \| moderate	10.106 \| good	45.062 \| good	23.162 \| good	1.447 \| good	10.828 \| good	0.136 \| good
2025-06-07T10:00:00.000Z	49 \| good	9.025 \| good	40.551 \| good	22.16 \| good	0.849 \| good	5.734 \| good	0.111 \| good
2025-06-07T11:00:00.000Z	49 \| good	8.985 \| good	40.464 \| good	20.749 \| good	1.095 \| good	7.864 \| good	0.12 \| good
2025-06-07T12:00:00.000Z	54 \| moderate	10.711 \| good	47.73 \| good	21.981 \| good	1.34 \| good	9.995 \| good	0.129 \| good
2025-06-07T13:00:00.000Z	54 \| moderate	11.045 \| good	48.954 \| good	19.605 \| good	0.883 \| good	3.303 \| good	0.103 \| good
2025-06-07T14:00:00.000Z	58 \| moderate	13.274 \| fine	60.411 \| fine	16.396 \| good	1.22 \| good	4.507 \| good	0.109 \| good
2025-06-07T15:00:00.000Z	60 \| moderate	14.075 \| fine	62.858 \| fine	18.9 \| good	1.558 \| good	5.712 \| good	0.115 \| good
2025-06-07T16:00:00.000Z	58 \| moderate	12.784 \| fine	56.886 \| fine	19.871 \| good	0.827 \| good	2.362 \| good	0.104 \| good

Foster City

Empower business decisions with accurate air quality data

Foster City, California air quality map: Real-time AQI near you

0.36ppm

How accurate is California, USA air quality data?

Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

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 is the air quality data for Foster City, California updated?

Air quality data for Foster City, California is updated on an hourly basis.

When did Foster City, California experience the worst air quality in the last 24 hours?

The worst air quality in Foster City, California was recorded at 08:00:00 on 2025-06-04.

When did Foster City, California have its best air quality in the last 24 hours?

The best air quality in Foster City, California was recorded at 02:00:00 on 2025-06-05.

What is the real-time air quality index for Foster City, California?

The real-time air quality index in Foster City, California is 33, currently categorized as Good.

Which pollutant is found most often in Foster City, California?

The most common pollutant in Foster City, California is PM2.5.

What can I do if the air quality in Foster City, California is poor?

If the air quality in Foster City, California is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Foster City, California?

The measured PM_2.5 levels in Foster City, California at present are 5.816 μg/m³.

What are the current PM₁₀ levels at Foster City, California?

The current PM₁₀ levels in Foster City, California are 25.717 μg/m³.

What are the current carbon monoxide (CO) levels at Foster City, California?

The current carbon monoxide (CO) level in Foster City, California is 0.259 ppm.

What are the current sulfur dioxide (SO₂) levels at Foster City, California?

The current sulfur dioxide (SO₂) levels in Foster City, California are 1.256 ppb.

What are the current ozone (O₃) levels at Foster City, California?

The current ozone (O₃) levels at Foster City, California is 25.543 ppm.

What are the current nitrogen dioxide (NO₂) levels at Foster City, California?

The current nitrogen dioxide (NO₂) levels at Foster City, California is 6.378 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T08:00:00.000Z	56 \| moderate	11.806 \| good	51.933 \| good	26.672 \| good	0.846 \| good	4.495 \| good	0.269 \| good
2025-06-04T09:00:00.000Z	58 \| moderate	12.856 \| fine	57.551 \| fine	26.226 \| good	0.847 \| good	3.21 \| good	0.23 \| good
2025-06-04T10:00:00.000Z	58 \| moderate	13.037 \| fine	58.489 \| fine	25.771 \| good	0.817 \| good	3.825 \| good	0.228 \| good
2025-06-04T11:00:00.000Z	56 \| moderate	12.479 \| fine	56.382 \| fine	27.29 \| good	0.804 \| good	4.444 \| good	0.225 \| good
2025-06-04T12:00:00.000Z	54 \| moderate	10.972 \| good	47.927 \| good	27.317 \| good	0.801 \| good	4.713 \| good	0.227 \| good
2025-06-04T13:00:00.000Z	44 \| good	7.984 \| good	34.995 \| good	22.402 \| good	0.718 \| good	2.623 \| good	0.111 \| good
2025-06-04T14:00:00.000Z	56 \| moderate	11.71 \| good	52.225 \| good	22.318 \| good	0.866 \| good	6.462 \| good	0.266 \| good
2025-06-04T15:00:00.000Z	60 \| moderate	14.128 \| fine	62.536 \| fine	25.066 \| good	0.901 \| good	8.249 \| good	0.293 \| good
2025-06-04T16:00:00.000Z	64 \| moderate	16.497 \| fine	73.289 \| fine	26.123 \| good	0.947 \| good	8.473 \| good	0.315 \| good
2025-06-04T17:00:00.000Z	66 \| moderate	16.854 \| fine	75.656 \| fine	27.708 \| good	0.853 \| good	6.438 \| good	0.328 \| good
2025-06-04T18:00:00.000Z	64 \| moderate	15.913 \| fine	70.818 \| fine	27.056 \| good	1.155 \| good	5.619 \| good	0.304 \| good
2025-06-04T19:00:00.000Z	64 \| moderate	16.019 \| fine	70.327 \| fine	28.424 \| good	1.762 \| good	5.655 \| good	0.285 \| good
2025-06-04T20:00:00.000Z	66 \| moderate	16.832 \| fine	75.028 \| fine	31.197 \| good	1.205 \| good	4.613 \| good	0.257 \| good
2025-06-04T21:00:00.000Z	64 \| moderate	16.046 \| fine	69.425 \| fine	32.694 \| good	1.076 \| good	4.215 \| good	0.29 \| good
2025-06-04T22:00:00.000Z	64 \| moderate	15.619 \| fine	69.887 \| fine	32.909 \| good	0.981 \| good	5.14 \| good	0.318 \| good
2025-06-04T23:00:00.000Z	64 \| moderate	16.209 \| fine	72.275 \| fine	34.105 \| good	0.884 \| good	5.044 \| good	0.294 \| good
2025-06-05T00:00:00.000Z	62 \| moderate	14.993 \| fine	66.211 \| fine	33.792 \| good	0.858 \| good	4.684 \| good	0.311 \| good
2025-06-05T01:00:00.000Z	60 \| moderate	14.149 \| fine	62.011 \| fine	32.392 \| good	0.853 \| good	5.243 \| good	0.294 \| good
2025-06-05T02:00:00.000Z	56 \| moderate	12.289 \| fine	54.477 \| good	32.458 \| good	0.947 \| good	5.563 \| good	0.269 \| good
2025-06-05T03:00:00.000Z	56 \| moderate	11.808 \| good	52.627 \| good	32.318 \| good	0.875 \| good	5.33 \| good	0.269 \| good
2025-06-05T04:00:00.000Z	54 \| moderate	11.046 \| good	48.846 \| good	32.017 \| good	0.796 \| good	6.074 \| good	0.269 \| good
2025-06-05T05:00:00.000Z	54 \| moderate	10.767 \| good	47.473 \| good	30.463 \| good	0.777 \| good	6.61 \| good	0.272 \| good
2025-06-05T06:00:00.000Z	52 \| moderate	10.232 \| good	45.216 \| good	29.434 \| good	0.742 \| good	3.707 \| good	0.254 \| good
2025-06-05T07:00:00.000Z	49 \| good	9.398 \| good	42.846 \| good	29.112 \| good	0.766 \| good	3.467 \| good	0.254 \| good
2025-06-05T08:00:00.000Z	49 \| good	8.693 \| good	38.058 \| good	27.986 \| good	0.772 \| good	3.425 \| good	0.251 \| good
2025-06-05T09:00:00.000Z	44 \| good	8.102 \| good	36.394 \| good	27.443 \| good	0.865 \| good	3.264 \| good	0.243 \| good
2025-06-05T10:00:00.000Z	49 \| good	9.301 \| good	42.935 \| good	26.548 \| good	1.092 \| good	3.578 \| good	0.212 \| good
2025-06-05T11:00:00.000Z	49 \| good	9.473 \| good	41.688 \| good	26.454 \| good	1.004 \| good	5.619 \| good	0.212 \| good
2025-06-05T12:00:00.000Z	49 \| good	8.826 \| good	38.183 \| good	25.412 \| good	1.223 \| good	5.524 \| good	0.212 \| good
2025-06-05T13:00:00.000Z	38 \| good	7.014 \| good	31.27 \| good	24.489 \| good	1.692 \| good	5.805 \| good	0.25 \| good
2025-06-05T14:00:00.000Z	27 \| good	5.29 \| good	23.693 \| good	26.414 \| good	1.277 \| good	6.245 \| good	0.283 \| good
2025-06-05T15:00:00.000Z	33 \| good	5.816 \| good	25.717 \| good	25.543 \| good	1.256 \| good	6.378 \| good	0.259 \| good
2025-06-05T16:00:00.000Z	33 \| good	6.24 \| good	27.205 \| good	26.39 \| good	1.272 \| good	6.79 \| good	0.259 \| good
2025-06-05T17:00:00.000Z	33 \| good	6.287 \| good	27.401 \| good	26.962 \| good	1.366 \| good	5.452 \| good	0.275 \| good
2025-06-05T18:00:00.000Z	38 \| good	7.204 \| good	32.407 \| good	27.442 \| good	1.254 \| good	5.607 \| good	0.285 \| good
2025-06-05T19:00:00.000Z	38 \| good	6.913 \| good	30.917 \| good	30.719 \| good	1.077 \| good	4.436 \| good	0.285 \| good
2025-06-05T20:00:00.000Z	49 \| good	8.98 \| good	40.043 \| good	30.711 \| good	0.682 \| good	4.065 \| good	0.285 \| good
2025-06-05T21:00:00.000Z	44 \| good	7.635 \| good	34.252 \| good	32.049 \| good	0.996 \| good	4.545 \| good	0.254 \| good
2025-06-05T22:00:00.000Z	33 \| good	5.85 \| good	25.571 \| good	33.736 \| good	0.767 \| good	5.227 \| good	0.266 \| good
2025-06-05T23:00:00.000Z	33 \| good	6.498 \| good	28.595 \| good	33.074 \| good	1.287 \| good	4.617 \| good	0.266 \| good
2025-06-06T00:00:00.000Z	38 \| good	6.926 \| good	30.81 \| good	33.568 \| good	0.961 \| good	3.38 \| good	0.266 \| good
2025-06-06T01:00:00.000Z	38 \| good	6.633 \| good	29.407 \| good	33.144 \| good	0.773 \| good	4.145 \| good	0.266 \| good
2025-06-06T02:00:00.000Z	38 \| good	6.505 \| good	29.196 \| good	32.072 \| good	0.795 \| good	4.277 \| good	0.263 \| good
2025-06-06T03:00:00.000Z	33 \| good	5.86 \| good	24.94 \| good	30.073 \| good	0.94 \| good	4.134 \| good	0.266 \| good
2025-06-06T04:00:00.000Z	27 \| good	5.078 \| good	22.612 \| good	29.042 \| good	0.896 \| good	3.91 \| good	0.266 \| good
2025-06-06T05:00:00.000Z	27 \| good	4.696 \| good	20.577 \| good	24.768 \| good	0.715 \| good	4.085 \| good	0.266 \| good
2025-06-06T06:00:00.000Z	27 \| good	4.651 \| good	20.246 \| good	22.481 \| good	0.573 \| good	4.011 \| good	0.266 \| good
2025-06-05T16:00:00.000Z	33 \| good	5.816 \| good	25.717 \| good	25.543 \| good	1.256 \| good	6.378 \| good	0.259 \| good
2025-06-05T17:00:00.000Z	52 \| moderate	10.044 \| good	44.734 \| good	30.004 \| good	0.487 \| good	1.483 \| good	0.102 \| good
2025-06-05T18:00:00.000Z	56 \| moderate	11.506 \| good	50.98 \| good	30.993 \| good	0.593 \| good	1.823 \| good	0.107 \| good
2025-06-05T19:00:00.000Z	58 \| moderate	12.54 \| fine	56.853 \| fine	30.282 \| good	0.391 \| good	0.721 \| good	0.095 \| good
2025-06-05T20:00:00.000Z	56 \| moderate	11.728 \| good	52.044 \| good	29.136 \| good	0.487 \| good	0.94 \| good	0.099 \| good
2025-06-05T21:00:00.000Z	54 \| moderate	11.273 \| good	49.897 \| good	28.635 \| good	0.582 \| good	1.16 \| good	0.103 \| good
2025-06-05T22:00:00.000Z	56 \| moderate	12.449 \| fine	56.855 \| fine	29.86 \| good	0.337 \| good	0.859 \| good	0.094 \| good
2025-06-05T23:00:00.000Z	56 \| moderate	12.27 \| fine	54.935 \| good	29.266 \| good	0.431 \| good	1.121 \| good	0.097 \| good
2025-06-06T00:00:00.000Z	54 \| moderate	10.817 \| good	47.906 \| good	29.25 \| good	0.525 \| good	1.384 \| good	0.101 \| good
2025-06-06T01:00:00.000Z	54 \| moderate	11.123 \| good	48.936 \| good	28.696 \| good	0.294 \| good	1.87 \| good	0.095 \| good
2025-06-06T02:00:00.000Z	56 \| moderate	12.224 \| fine	55.033 \| fine	29.007 \| good	0.401 \| good	2.495 \| good	0.099 \| good
2025-06-06T03:00:00.000Z	56 \| moderate	11.826 \| good	52.152 \| good	28.997 \| good	0.508 \| good	3.119 \| good	0.103 \| good
2025-06-06T04:00:00.000Z	54 \| moderate	11.259 \| good	49.922 \| good	29.228 \| good	0.388 \| good	2.528 \| good	0.095 \| good
2025-06-06T05:00:00.000Z	52 \| moderate	10.391 \| good	46.019 \| good	27.25 \| good	0.533 \| good	3.413 \| good	0.1 \| good
2025-06-06T06:00:00.000Z	52 \| moderate	9.801 \| good	43.834 \| good	26.59 \| good	0.677 \| good	4.298 \| good	0.104 \| good
2025-06-06T07:00:00.000Z	52 \| moderate	10.486 \| good	46.218 \| good	25.737 \| good	0.411 \| good	2.478 \| good	0.095 \| good
2025-06-06T08:00:00.000Z	54 \| moderate	10.677 \| good	47.324 \| good	25.538 \| good	0.566 \| good	3.413 \| good	0.099 \| good
2025-06-06T09:00:00.000Z	52 \| moderate	10.161 \| good	45.217 \| good	25.707 \| good	0.721 \| good	4.348 \| good	0.103 \| good
2025-06-06T10:00:00.000Z	49 \| good	9.17 \| good	40.775 \| good	25.643 \| good	0.399 \| good	1.907 \| good	0.093 \| good
2025-06-06T11:00:00.000Z	49 \| good	9.069 \| good	40.549 \| good	23.69 \| good	0.553 \| good	2.579 \| good	0.095 \| good
2025-06-06T12:00:00.000Z	49 \| good	9.301 \| good	41.183 \| good	24.827 \| good	0.708 \| good	3.252 \| good	0.098 \| good
2025-06-06T13:00:00.000Z	52 \| moderate	10.374 \| good	46.158 \| good	21.964 \| good	0.39 \| good	1.841 \| good	0.095 \| good
2025-06-06T14:00:00.000Z	56 \| moderate	11.973 \| good	53.741 \| good	22.415 \| good	0.554 \| good	2.379 \| good	0.098 \| good
2025-06-06T15:00:00.000Z	62 \| moderate	14.579 \| fine	65.013 \| fine	23.771 \| good	0.718 \| good	2.917 \| good	0.101 \| good
2025-06-06T16:00:00.000Z	60 \| moderate	14.33 \| fine	64.657 \| fine	25.056 \| good	0.474 \| good	1.636 \| good	0.101 \| good
2025-06-06T17:00:00.000Z	60 \| moderate	13.914 \| fine	62.255 \| fine	26.769 \| good	0.642 \| good	2.146 \| good	0.106 \| good
2025-06-06T18:00:00.000Z	62 \| moderate	14.608 \| fine	64.804 \| fine	29.17 \| good	0.811 \| good	2.657 \| good	0.11 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	14.735 \| fine	66.368 \| fine	30.585 \| good	0.567 \| good	1.018 \| good	0.095 \| good
2025-06-06T20:00:00.000Z	60 \| moderate	13.678 \| fine	60.734 \| fine	30.83 \| good	0.734 \| good	1.403 \| good	0.1 \| good
2025-06-06T21:00:00.000Z	58 \| moderate	13.01 \| fine	58.636 \| fine	28.813 \| good	0.9 \| good	1.789 \| good	0.104 \| good
2025-06-06T22:00:00.000Z	60 \| moderate	13.837 \| fine	62.728 \| fine	27.658 \| good	0.524 \| good	1.221 \| good	0.096 \| good
2025-06-06T23:00:00.000Z	60 \| moderate	14.091 \| fine	63.08 \| fine	26.372 \| good	0.681 \| good	1.669 \| good	0.101 \| good
2025-06-07T00:00:00.000Z	58 \| moderate	12.673 \| fine	56.989 \| fine	25.859 \| good	0.838 \| good	2.116 \| good	0.105 \| good
2025-06-07T01:00:00.000Z	56 \| moderate	12.339 \| fine	55.04 \| fine	25.628 \| good	0.508 \| good	3.775 \| good	0.106 \| good
2025-06-07T02:00:00.000Z	58 \| moderate	13.142 \| fine	59.078 \| fine	25.123 \| good	0.698 \| good	5.059 \| good	0.114 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	12.321 \| fine	55.162 \| fine	25.299 \| good	0.889 \| good	6.344 \| good	0.121 \| good
2025-06-07T04:00:00.000Z	54 \| moderate	11.262 \| good	49.947 \| good	25.254 \| good	0.764 \| good	6.147 \| good	0.114 \| good
2025-06-07T05:00:00.000Z	52 \| moderate	10.365 \| good	45.986 \| good	24.663 \| good	1.011 \| good	8.136 \| good	0.123 \| good
2025-06-07T06:00:00.000Z	52 \| moderate	9.818 \| good	43.949 \| good	24.048 \| good	1.258 \| good	10.125 \| good	0.132 \| good
2025-06-07T07:00:00.000Z	52 \| moderate	10.399 \| good	46.07 \| good	25.204 \| good	0.905 \| good	6.474 \| good	0.116 \| good
2025-06-07T08:00:00.000Z	54 \| moderate	10.642 \| good	47.172 \| good	24.039 \| good	1.176 \| good	8.651 \| good	0.126 \| good
2025-06-07T09:00:00.000Z	52 \| moderate	10.106 \| good	45.062 \| good	23.162 \| good	1.447 \| good	10.828 \| good	0.136 \| good
2025-06-07T10:00:00.000Z	49 \| good	9.025 \| good	40.551 \| good	22.16 \| good	0.849 \| good	5.734 \| good	0.111 \| good
2025-06-07T11:00:00.000Z	49 \| good	8.985 \| good	40.464 \| good	20.749 \| good	1.095 \| good	7.864 \| good	0.12 \| good
2025-06-07T12:00:00.000Z	54 \| moderate	10.711 \| good	47.73 \| good	21.981 \| good	1.34 \| good	9.995 \| good	0.129 \| good
2025-06-07T13:00:00.000Z	54 \| moderate	11.045 \| good	48.954 \| good	19.605 \| good	0.883 \| good	3.303 \| good	0.103 \| good
2025-06-07T14:00:00.000Z	58 \| moderate	13.274 \| fine	60.411 \| fine	16.396 \| good	1.22 \| good	4.507 \| good	0.109 \| good
2025-06-07T15:00:00.000Z	60 \| moderate	14.075 \| fine	62.858 \| fine	18.9 \| good	1.558 \| good	5.712 \| good	0.115 \| good
2025-06-07T16:00:00.000Z	58 \| moderate	12.784 \| fine	56.886 \| fine	19.871 \| good	0.827 \| good	2.362 \| good	0.104 \| good

Live air quality index in Foster City, California today

Major air pollutants in Foster City, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Foster City, California air quality forecast and history

Empower business decisions with accurate air quality data

Foster City, California air quality map: Real-time AQI near you

Air quality in nearby cities

Belmont, California

San Mateo, California

San Carlos, California

Burlingame, California

Redwood City, California

Hillsborough, California

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently is the air quality data for Foster City, California updated?

When did Foster City, California experience the worst air quality in the last 24 hours?

When did Foster City, California have its best air quality in the last 24 hours?

What is the real-time air quality index for Foster City, California?

Which pollutant is found most often in Foster City, California?

What can I do if the air quality in Foster City, California is poor?

What are the current PM2.5 levels in Foster City, California?

What are the current PM10 levels at Foster City, California?

What are the current carbon monoxide (CO) levels at Foster City, California?

What are the current sulfur dioxide (SO2) levels at Foster City, California?

What are the current ozone (O3) levels at Foster City, California?

What are the current nitrogen dioxide (NO2) levels at Foster City, California?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in Foster City, California?

What are the current PM₁₀ levels at Foster City, California?

What are the current sulfur dioxide (SO₂) levels at Foster City, California?

What are the current ozone (O₃) levels at Foster City, California?

What are the current nitrogen dioxide (NO₂) levels at Foster City, California?