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

The current PM10 levels in Foster City, California are 25.716 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 0.254 ppb.

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

The current ozone (O3) levels at Foster City, California is 14.657 ppm.

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

The current nitrogen dioxide (NO2) levels at Foster City, California is 10.974 ppb.

Real-time air quality index in Foster City, California today

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

The measured PM2.5 levels in Foster City, California at present are 5.714 μg/m3.

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)

Common air pollutants in Foster City, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.24 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

27.28 μg/m³

155

255

425

605+

Ozone (O₃)

13.10 ppb

201

201+

Sulfur Dioxide (SO₂)

0.27 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

15.39 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.29 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
2026-10-07T14:00:00.000Z	19 \| good	2.667 \| good	10.815 \| good	21.29 \| good	0.36 \| good	10.327 \| good	0.406 \| good
2026-10-07T15:00:00.000Z	32 \| good	1.639 \| good	35.438 \| good	21.017 \| good	0.366 \| good	10.978 \| good	0.494 \| good
2026-10-07T16:00:00.000Z	22 \| good	3.637 \| good	11.877 \| good	11.329 \| good	0.358 \| good	9.518 \| good	0.504 \| good
2026-10-07T17:00:00.000Z	33 \| good	5.552 \| good	30.329 \| good	11.367 \| good	0.502 \| good	13.831 \| good	0.384 \| good
2026-10-07T18:00:00.000Z	38 \| good	7.463 \| good	32.417 \| good	13.48 \| good	0.754 \| good	12.544 \| good	0.411 \| good
2026-10-07T19:00:00.000Z	27 \| good	4.851 \| good	27.718 \| good	15.109 \| good	1.348 \| good	9.963 \| good	0.411 \| good
2026-10-07T20:00:00.000Z	36 \| good	5.619 \| good	38.66 \| good	20.235 \| good	1.132 \| good	11.335 \| good	0.384 \| good
2026-10-07T21:00:00.000Z	44 \| good	7.647 \| good	31.463 \| good	26.11 \| good	1.237 \| good	10.867 \| good	0.367 \| good
2026-10-07T22:00:00.000Z	30 \| good	5.025 \| good	24.266 \| good	31.871 \| good	1.256 \| good	10.137 \| good	0.389 \| good
2026-10-07T23:00:00.000Z	33 \| good	6.343 \| good	14.246 \| good	33.509 \| good	1.184 \| good	9.47 \| good	0.367 \| good
2026-10-08T00:00:00.000Z	30 \| good	5.052 \| good	19.999 \| good	32.022 \| good	1.06 \| good	8.057 \| good	0.313 \| good
2026-10-08T01:00:00.000Z	31 \| good	4.422 \| good	20.435 \| good	32.575 \| good	0.841 \| good	6.279 \| good	0.297 \| good
2026-10-08T02:00:00.000Z	33 \| good	5.008 \| good	26.098 \| good	36.097 \| good	0.714 \| good	9.984 \| good	0.28 \| good
2026-10-08T03:00:00.000Z	33 \| good	6.006 \| good	26.818 \| good	25.599 \| good	0.301 \| good	9.668 \| good	0.165 \| good
2026-10-08T04:00:00.000Z	27 \| good	4.028 \| good	21.193 \| good	29.206 \| good	0.815 \| good	9.203 \| good	0.348 \| good
2026-10-08T05:00:00.000Z	35 \| good	4.74 \| good	20.122 \| good	38.266 \| good	0.61 \| good	7.398 \| good	0.348 \| good
2026-10-08T06:00:00.000Z	33 \| good	5.838 \| good	29.879 \| good	35.602 \| good	0.514 \| good	8.132 \| good	0.372 \| good
2026-10-08T07:00:00.000Z	33 \| good	5.554 \| good	22.889 \| good	33.625 \| good	0.525 \| good	5.734 \| good	0.32 \| good
2026-10-08T08:00:00.000Z	30 \| good	3.704 \| good	12.555 \| good	32.443 \| good	0.515 \| good	5.583 \| good	0.303 \| good
2026-10-08T09:00:00.000Z	32 \| good	4.033 \| good	21.434 \| good	34.618 \| good	0.497 \| good	5.588 \| good	0.303 \| good
2026-10-08T10:00:00.000Z	26 \| good	3.811 \| good	17.675 \| good	28.375 \| good	0.442 \| good	5.528 \| good	0.303 \| good
2026-10-08T11:00:00.000Z	27 \| good	3.958 \| good	11.618 \| good	28.939 \| good	0.442 \| good	5.769 \| good	0.32 \| good
2026-10-08T12:00:00.000Z	21 \| good	3.109 \| good	7.868 \| good	22.869 \| good	0.469 \| good	5.335 \| good	0.32 \| good
2026-10-08T13:00:00.000Z	22 \| good	2.374 \| good	23.633 \| good	24.331 \| good	0.687 \| good	5.764 \| good	0.303 \| good
2026-10-08T14:00:00.000Z	19 \| good	3.313 \| good	20.519 \| good	19.801 \| good	0.431 \| good	8.552 \| good	0.357 \| good
2026-10-08T15:00:00.000Z	16 \| good	2.686 \| good	9.859 \| good	16.012 \| good	0.523 \| good	10.287 \| good	0.509 \| good
2026-10-08T16:00:00.000Z	16 \| good	2.575 \| good	16.222 \| good	11.382 \| good	0.547 \| good	10.923 \| good	0.555 \| good
2026-10-08T17:00:00.000Z	38 \| good	6.775 \| good	29.225 \| good	12.67 \| good	0.744 \| good	13.239 \| good	0.601 \| good
2026-10-08T18:00:00.000Z	44 \| good	7.83 \| good	34.112 \| good	16.309 \| good	0.749 \| good	12.474 \| good	0.434 \| good
2026-10-08T19:00:00.000Z	27 \| good	5.19 \| good	18.242 \| good	14.621 \| good	0.917 \| good	12.285 \| good	0.425 \| good
2026-10-08T20:00:00.000Z	38 \| good	6.568 \| good	26.719 \| good	18.399 \| good	1.026 \| good	11.749 \| good	0.408 \| good
2026-10-08T21:00:00.000Z	33 \| good	5.642 \| good	19.377 \| good	25.369 \| good	1.615 \| good	11.685 \| good	0.422 \| good
2026-10-08T22:00:00.000Z	38 \| good	6.606 \| good	40.166 \| good	28.564 \| good	1.495 \| good	11.088 \| good	0.394 \| good
2026-10-08T23:00:00.000Z	25 \| good	3.189 \| good	15.55 \| good	27.14 \| good	0.954 \| good	8.749 \| good	0.349 \| good
2026-10-09T00:00:00.000Z	27 \| good	3.178 \| good	12.908 \| good	28.527 \| good	0.831 \| good	7.827 \| good	0.335 \| good
2026-10-09T01:00:00.000Z	29 \| good	4.663 \| good	29.605 \| good	31.283 \| good	0.75 \| good	5.821 \| good	0.316 \| good
2026-10-09T02:00:00.000Z	44 \| good	7.968 \| good	20.371 \| good	44.667 \| good	0.709 \| good	7.439 \| good	0.316 \| good
2026-10-09T03:00:00.000Z	38 \| good	7.083 \| good	31.06 \| good	27.48 \| good	0.301 \| good	7.848 \| good	0.153 \| good
2026-10-09T04:00:00.000Z	37 \| good	6.246 \| good	27.427 \| good	39.832 \| good	0.481 \| good	8.011 \| good	0.316 \| good
2026-10-09T05:00:00.000Z	38 \| good	6.81 \| good	30.923 \| good	37.536 \| good	0.336 \| good	8.187 \| good	0.335 \| good
2026-10-09T06:00:00.000Z	38 \| good	7.264 \| good	29.26 \| good	31.27 \| good	0.285 \| good	8.146 \| good	0.335 \| good
2026-10-09T07:00:00.000Z	33 \| good	6.434 \| good	22.367 \| good	30.863 \| good	0.292 \| good	5.332 \| good	0.324 \| good
2026-10-09T08:00:00.000Z	33 \| good	6.332 \| good	26.226 \| good	27.567 \| good	0.291 \| good	3.994 \| good	0.267 \| good
2026-10-09T09:00:00.000Z	33 \| good	5.884 \| good	28.889 \| good	24.528 \| good	0.335 \| good	3.739 \| good	0.289 \| good
2026-10-09T10:00:00.000Z	27 \| good	4.886 \| good	21.829 \| good	22.226 \| good	0.256 \| good	2.491 \| good	0.273 \| good
2026-10-09T11:00:00.000Z	23 \| good	2.07 \| good	10.921 \| good	24.522 \| good	0.255 \| good	2.284 \| good	0.289 \| good
2026-10-09T12:00:00.000Z	24 \| good	3.748 \| good	19.554 \| good	25.55 \| good	0.264 \| good	2.291 \| good	0.273 \| good
2026-10-09T13:00:00.000Z	22 \| good	3.965 \| good	15.593 \| good	24.287 \| good	0.309 \| good	2.938 \| good	0.289 \| good
2026-10-09T13:00:00.000Z	33 \| good	6.243 \| good	27.282 \| good	13.098 \| good	0.272 \| good	15.39 \| good	0.292 \| good
2026-10-09T13:00:00.000Z	38 \| good	7.341 \| good	32.654 \| good	16.485 \| good	0.369 \| good	5.445 \| good	0.15 \| good
2026-10-09T14:00:00.000Z	44 \| good	7.893 \| good	34.742 \| good	14.211 \| good	0.379 \| good	5.475 \| good	0.151 \| good
2026-10-09T15:00:00.000Z	49 \| good	9.26 \| good	41.459 \| good	17.438 \| good	0.388 \| good	5.181 \| good	0.152 \| good
2026-10-09T16:00:00.000Z	49 \| good	9.053 \| good	40.371 \| good	20.65 \| good	0.394 \| good	4.696 \| good	0.151 \| good
2026-10-09T17:00:00.000Z	49 \| good	9.261 \| good	41.231 \| good	23.605 \| good	0.389 \| good	3.802 \| good	0.147 \| good
2026-10-09T18:00:00.000Z	49 \| good	9.099 \| good	40.241 \| good	27.772 \| good	0.376 \| good	2.849 \| good	0.144 \| good
2026-10-09T19:00:00.000Z	52 \| moderate	10.142 \| good	44.743 \| good	31.641 \| good	0.37 \| good	2.29 \| good	0.144 \| good
2026-10-09T20:00:00.000Z	49 \| good	9.025 \| good	40.514 \| good	32.965 \| good	0.367 \| good	1.879 \| good	0.144 \| good
2026-10-09T21:00:00.000Z	49 \| good	9.276 \| good	41.033 \| good	31.104 \| good	0.358 \| good	1.624 \| good	0.144 \| good
2026-10-09T22:00:00.000Z	49 \| good	9.229 \| good	40.919 \| good	29.885 \| good	0.347 \| good	1.568 \| good	0.144 \| good
2026-10-09T23:00:00.000Z	44 \| good	8.187 \| good	35.83 \| good	26.001 \| good	0.333 \| good	1.642 \| good	0.144 \| good
2026-10-10T00:00:00.000Z	44 \| good	7.941 \| good	34.745 \| good	21.813 \| good	0.324 \| good	1.888 \| good	0.145 \| good
2026-10-10T01:00:00.000Z	38 \| good	7.399 \| good	32.829 \| good	18.249 \| good	0.311 \| good	2.142 \| good	0.145 \| good
2026-10-10T02:00:00.000Z	38 \| good	6.627 \| good	29.795 \| good	22.688 \| good	0.317 \| good	2.484 \| good	0.145 \| good
2026-10-10T03:00:00.000Z	33 \| good	5.882 \| good	25.319 \| good	23.576 \| good	0.332 \| good	2.539 \| good	0.144 \| good
2026-10-10T04:00:00.000Z	27 \| good	5.432 \| good	23.251 \| good	23.834 \| good	0.339 \| good	2.461 \| good	0.141 \| good
2026-10-10T05:00:00.000Z	27 \| good	4.515 \| good	19.935 \| good	22.424 \| good	0.337 \| good	2.572 \| good	0.137 \| good
2026-10-10T06:00:00.000Z	27 \| good	4.99 \| good	21.266 \| good	21.658 \| good	0.333 \| good	2.838 \| good	0.134 \| good
2026-10-10T07:00:00.000Z	27 \| good	5.171 \| good	22.286 \| good	21.117 \| good	0.325 \| good	2.89 \| good	0.131 \| good
2026-10-10T08:00:00.000Z	33 \| good	5.505 \| good	23.351 \| good	21.203 \| good	0.308 \| good	2.66 \| good	0.127 \| good
2026-10-10T09:00:00.000Z	22 \| good	4.251 \| good	18.892 \| good	21.011 \| good	0.293 \| good	2.244 \| good	0.122 \| good
2026-10-10T10:00:00.000Z	20 \| good	3.426 \| good	14.98 \| good	21.906 \| good	0.278 \| good	2.084 \| good	0.118 \| good
2026-10-10T11:00:00.000Z	22 \| good	3.694 \| good	16.011 \| good	23.789 \| good	0.267 \| good	2.113 \| good	0.117 \| good
2026-10-10T12:00:00.000Z	22 \| good	4.07 \| good	18.018 \| good	24.412 \| good	0.264 \| good	2.145 \| good	0.117 \| good
2026-10-10T13:00:00.000Z	25 \| good	3.177 \| good	13.828 \| good	26.576 \| good	0.275 \| good	2.147 \| good	0.118 \| good
2026-10-10T14:00:00.000Z	24 \| good	3.173 \| good	13.86 \| good	26.355 \| good	0.289 \| good	2.378 \| good	0.12 \| good
2026-10-10T15:00:00.000Z	28 \| good	3.079 \| good	13.519 \| good	30.167 \| good	0.296 \| good	2.525 \| good	0.122 \| good
2026-10-10T16:00:00.000Z	30 \| good	2.546 \| good	9.99 \| good	32.148 \| good	0.295 \| good	1.817 \| good	0.121 \| good
2026-10-10T17:00:00.000Z	29 \| good	2.576 \| good	10.77 \| good	31.432 \| good	0.303 \| good	1.433 \| good	0.12 \| good
2026-10-10T18:00:00.000Z	31 \| good	2.794 \| good	11.584 \| good	33.591 \| good	0.323 \| good	1.104 \| good	0.119 \| good
2026-10-10T19:00:00.000Z	31 \| good	3.862 \| good	16.982 \| good	33.146 \| good	0.342 \| good	0.852 \| good	0.119 \| good
2026-10-10T20:00:00.000Z	31 \| good	5.175 \| good	22.207 \| good	33.244 \| good	0.352 \| good	0.687 \| good	0.119 \| good
2026-10-10T21:00:00.000Z	30 \| good	4.95 \| good	21.155 \| good	32.082 \| good	0.353 \| good	0.635 \| good	0.118 \| good
2026-10-10T22:00:00.000Z	29 \| good	4.488 \| good	19.186 \| good	31.023 \| good	0.35 \| good	0.662 \| good	0.118 \| good
2026-10-10T23:00:00.000Z	29 \| good	4.25 \| good	18.851 \| good	31.272 \| good	0.341 \| good	0.79 \| good	0.118 \| good
2026-10-11T00:00:00.000Z	26 \| good	4.174 \| good	18.754 \| good	28.161 \| good	0.325 \| good	0.994 \| good	0.118 \| good
2026-10-11T01:00:00.000Z	24 \| good	3.834 \| good	16.944 \| good	26.211 \| good	0.307 \| good	1.316 \| good	0.119 \| good
2026-10-11T02:00:00.000Z	25 \| good	3.373 \| good	14.903 \| good	26.76 \| good	0.3 \| good	1.788 \| good	0.122 \| good
2026-10-11T03:00:00.000Z	30 \| good	3.512 \| good	15.766 \| good	31.623 \| good	0.31 \| good	1.992 \| good	0.124 \| good
2026-10-11T04:00:00.000Z	22 \| good	4.152 \| good	17.954 \| good	20.593 \| good	0.312 \| good	2.124 \| good	0.126 \| good
2026-10-11T05:00:00.000Z	21 \| good	2.774 \| good	11.076 \| good	22.686 \| good	0.305 \| good	2.208 \| good	0.128 \| good
2026-10-11T06:00:00.000Z	24 \| good	2.808 \| good	11.882 \| good	25.981 \| good	0.297 \| good	2.235 \| good	0.128 \| good
2026-10-11T07:00:00.000Z	22 \| good	2.623 \| good	10.898 \| good	24.096 \| good	0.281 \| good	2.064 \| good	0.128 \| good
2026-10-11T08:00:00.000Z	22 \| good	3.215 \| good	14.078 \| good	24.424 \| good	0.263 \| good	1.733 \| good	0.128 \| good
2026-10-11T09:00:00.000Z	22 \| good	2.524 \| good	9.99 \| good	24.388 \| good	0.247 \| good	1.516 \| good	0.127 \| good
2026-10-11T10:00:00.000Z	23 \| good	1.554 \| good	5.988 \| good	25.123 \| good	0.236 \| good	1.396 \| good	0.127 \| good
2026-10-11T11:00:00.000Z	23 \| good	1.513 \| good	5.957 \| good	24.88 \| good	0.23 \| good	1.301 \| good	0.125 \| good
2026-10-11T12:00:00.000Z	49 \| good	9.262 \| good	15.008 \| good	35.857 \| good	0.225 \| good	1.242 \| good	0.124 \| good

Foster City

Empower business decisions with accurate air quality data

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

0.29ppm

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

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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 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 07:00:00 on 2026-10-09.

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 2026-10-08.

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 5.714 μg/m³.

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

The current PM₁₀ levels in Foster City, California are 25.716 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 0.292 ppm.

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

The current sulfur dioxide (SO₂) levels in Foster City, California are 0.254 ppb.

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

The current ozone (O₃) levels at Foster City, California is 14.657 ppm.

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

The current nitrogen dioxide (NO₂) levels at Foster City, California is 10.974 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-10-07T14:00:00.000Z	19 \| good	2.667 \| good	10.815 \| good	21.29 \| good	0.36 \| good	10.327 \| good	0.406 \| good
2026-10-07T15:00:00.000Z	32 \| good	1.639 \| good	35.438 \| good	21.017 \| good	0.366 \| good	10.978 \| good	0.494 \| good
2026-10-07T16:00:00.000Z	22 \| good	3.637 \| good	11.877 \| good	11.329 \| good	0.358 \| good	9.518 \| good	0.504 \| good
2026-10-07T17:00:00.000Z	33 \| good	5.552 \| good	30.329 \| good	11.367 \| good	0.502 \| good	13.831 \| good	0.384 \| good
2026-10-07T18:00:00.000Z	38 \| good	7.463 \| good	32.417 \| good	13.48 \| good	0.754 \| good	12.544 \| good	0.411 \| good
2026-10-07T19:00:00.000Z	27 \| good	4.851 \| good	27.718 \| good	15.109 \| good	1.348 \| good	9.963 \| good	0.411 \| good
2026-10-07T20:00:00.000Z	36 \| good	5.619 \| good	38.66 \| good	20.235 \| good	1.132 \| good	11.335 \| good	0.384 \| good
2026-10-07T21:00:00.000Z	44 \| good	7.647 \| good	31.463 \| good	26.11 \| good	1.237 \| good	10.867 \| good	0.367 \| good
2026-10-07T22:00:00.000Z	30 \| good	5.025 \| good	24.266 \| good	31.871 \| good	1.256 \| good	10.137 \| good	0.389 \| good
2026-10-07T23:00:00.000Z	33 \| good	6.343 \| good	14.246 \| good	33.509 \| good	1.184 \| good	9.47 \| good	0.367 \| good
2026-10-08T00:00:00.000Z	30 \| good	5.052 \| good	19.999 \| good	32.022 \| good	1.06 \| good	8.057 \| good	0.313 \| good
2026-10-08T01:00:00.000Z	31 \| good	4.422 \| good	20.435 \| good	32.575 \| good	0.841 \| good	6.279 \| good	0.297 \| good
2026-10-08T02:00:00.000Z	33 \| good	5.008 \| good	26.098 \| good	36.097 \| good	0.714 \| good	9.984 \| good	0.28 \| good
2026-10-08T03:00:00.000Z	33 \| good	6.006 \| good	26.818 \| good	25.599 \| good	0.301 \| good	9.668 \| good	0.165 \| good
2026-10-08T04:00:00.000Z	27 \| good	4.028 \| good	21.193 \| good	29.206 \| good	0.815 \| good	9.203 \| good	0.348 \| good
2026-10-08T05:00:00.000Z	35 \| good	4.74 \| good	20.122 \| good	38.266 \| good	0.61 \| good	7.398 \| good	0.348 \| good
2026-10-08T06:00:00.000Z	33 \| good	5.838 \| good	29.879 \| good	35.602 \| good	0.514 \| good	8.132 \| good	0.372 \| good
2026-10-08T07:00:00.000Z	33 \| good	5.554 \| good	22.889 \| good	33.625 \| good	0.525 \| good	5.734 \| good	0.32 \| good
2026-10-08T08:00:00.000Z	30 \| good	3.704 \| good	12.555 \| good	32.443 \| good	0.515 \| good	5.583 \| good	0.303 \| good
2026-10-08T09:00:00.000Z	32 \| good	4.033 \| good	21.434 \| good	34.618 \| good	0.497 \| good	5.588 \| good	0.303 \| good
2026-10-08T10:00:00.000Z	26 \| good	3.811 \| good	17.675 \| good	28.375 \| good	0.442 \| good	5.528 \| good	0.303 \| good
2026-10-08T11:00:00.000Z	27 \| good	3.958 \| good	11.618 \| good	28.939 \| good	0.442 \| good	5.769 \| good	0.32 \| good
2026-10-08T12:00:00.000Z	21 \| good	3.109 \| good	7.868 \| good	22.869 \| good	0.469 \| good	5.335 \| good	0.32 \| good
2026-10-08T13:00:00.000Z	22 \| good	2.374 \| good	23.633 \| good	24.331 \| good	0.687 \| good	5.764 \| good	0.303 \| good
2026-10-08T14:00:00.000Z	19 \| good	3.313 \| good	20.519 \| good	19.801 \| good	0.431 \| good	8.552 \| good	0.357 \| good
2026-10-08T15:00:00.000Z	16 \| good	2.686 \| good	9.859 \| good	16.012 \| good	0.523 \| good	10.287 \| good	0.509 \| good
2026-10-08T16:00:00.000Z	16 \| good	2.575 \| good	16.222 \| good	11.382 \| good	0.547 \| good	10.923 \| good	0.555 \| good
2026-10-08T17:00:00.000Z	38 \| good	6.775 \| good	29.225 \| good	12.67 \| good	0.744 \| good	13.239 \| good	0.601 \| good
2026-10-08T18:00:00.000Z	44 \| good	7.83 \| good	34.112 \| good	16.309 \| good	0.749 \| good	12.474 \| good	0.434 \| good
2026-10-08T19:00:00.000Z	27 \| good	5.19 \| good	18.242 \| good	14.621 \| good	0.917 \| good	12.285 \| good	0.425 \| good
2026-10-08T20:00:00.000Z	38 \| good	6.568 \| good	26.719 \| good	18.399 \| good	1.026 \| good	11.749 \| good	0.408 \| good
2026-10-08T21:00:00.000Z	33 \| good	5.642 \| good	19.377 \| good	25.369 \| good	1.615 \| good	11.685 \| good	0.422 \| good
2026-10-08T22:00:00.000Z	38 \| good	6.606 \| good	40.166 \| good	28.564 \| good	1.495 \| good	11.088 \| good	0.394 \| good
2026-10-08T23:00:00.000Z	25 \| good	3.189 \| good	15.55 \| good	27.14 \| good	0.954 \| good	8.749 \| good	0.349 \| good
2026-10-09T00:00:00.000Z	27 \| good	3.178 \| good	12.908 \| good	28.527 \| good	0.831 \| good	7.827 \| good	0.335 \| good
2026-10-09T01:00:00.000Z	29 \| good	4.663 \| good	29.605 \| good	31.283 \| good	0.75 \| good	5.821 \| good	0.316 \| good
2026-10-09T02:00:00.000Z	44 \| good	7.968 \| good	20.371 \| good	44.667 \| good	0.709 \| good	7.439 \| good	0.316 \| good
2026-10-09T03:00:00.000Z	38 \| good	7.083 \| good	31.06 \| good	27.48 \| good	0.301 \| good	7.848 \| good	0.153 \| good
2026-10-09T04:00:00.000Z	37 \| good	6.246 \| good	27.427 \| good	39.832 \| good	0.481 \| good	8.011 \| good	0.316 \| good
2026-10-09T05:00:00.000Z	38 \| good	6.81 \| good	30.923 \| good	37.536 \| good	0.336 \| good	8.187 \| good	0.335 \| good
2026-10-09T06:00:00.000Z	38 \| good	7.264 \| good	29.26 \| good	31.27 \| good	0.285 \| good	8.146 \| good	0.335 \| good
2026-10-09T07:00:00.000Z	33 \| good	6.434 \| good	22.367 \| good	30.863 \| good	0.292 \| good	5.332 \| good	0.324 \| good
2026-10-09T08:00:00.000Z	33 \| good	6.332 \| good	26.226 \| good	27.567 \| good	0.291 \| good	3.994 \| good	0.267 \| good
2026-10-09T09:00:00.000Z	33 \| good	5.884 \| good	28.889 \| good	24.528 \| good	0.335 \| good	3.739 \| good	0.289 \| good
2026-10-09T10:00:00.000Z	27 \| good	4.886 \| good	21.829 \| good	22.226 \| good	0.256 \| good	2.491 \| good	0.273 \| good
2026-10-09T11:00:00.000Z	23 \| good	2.07 \| good	10.921 \| good	24.522 \| good	0.255 \| good	2.284 \| good	0.289 \| good
2026-10-09T12:00:00.000Z	24 \| good	3.748 \| good	19.554 \| good	25.55 \| good	0.264 \| good	2.291 \| good	0.273 \| good
2026-10-09T13:00:00.000Z	22 \| good	3.965 \| good	15.593 \| good	24.287 \| good	0.309 \| good	2.938 \| good	0.289 \| good
2026-10-09T13:00:00.000Z	33 \| good	6.243 \| good	27.282 \| good	13.098 \| good	0.272 \| good	15.39 \| good	0.292 \| good
2026-10-09T13:00:00.000Z	38 \| good	7.341 \| good	32.654 \| good	16.485 \| good	0.369 \| good	5.445 \| good	0.15 \| good
2026-10-09T14:00:00.000Z	44 \| good	7.893 \| good	34.742 \| good	14.211 \| good	0.379 \| good	5.475 \| good	0.151 \| good
2026-10-09T15:00:00.000Z	49 \| good	9.26 \| good	41.459 \| good	17.438 \| good	0.388 \| good	5.181 \| good	0.152 \| good
2026-10-09T16:00:00.000Z	49 \| good	9.053 \| good	40.371 \| good	20.65 \| good	0.394 \| good	4.696 \| good	0.151 \| good
2026-10-09T17:00:00.000Z	49 \| good	9.261 \| good	41.231 \| good	23.605 \| good	0.389 \| good	3.802 \| good	0.147 \| good
2026-10-09T18:00:00.000Z	49 \| good	9.099 \| good	40.241 \| good	27.772 \| good	0.376 \| good	2.849 \| good	0.144 \| good
2026-10-09T19:00:00.000Z	52 \| moderate	10.142 \| good	44.743 \| good	31.641 \| good	0.37 \| good	2.29 \| good	0.144 \| good
2026-10-09T20:00:00.000Z	49 \| good	9.025 \| good	40.514 \| good	32.965 \| good	0.367 \| good	1.879 \| good	0.144 \| good
2026-10-09T21:00:00.000Z	49 \| good	9.276 \| good	41.033 \| good	31.104 \| good	0.358 \| good	1.624 \| good	0.144 \| good
2026-10-09T22:00:00.000Z	49 \| good	9.229 \| good	40.919 \| good	29.885 \| good	0.347 \| good	1.568 \| good	0.144 \| good
2026-10-09T23:00:00.000Z	44 \| good	8.187 \| good	35.83 \| good	26.001 \| good	0.333 \| good	1.642 \| good	0.144 \| good
2026-10-10T00:00:00.000Z	44 \| good	7.941 \| good	34.745 \| good	21.813 \| good	0.324 \| good	1.888 \| good	0.145 \| good
2026-10-10T01:00:00.000Z	38 \| good	7.399 \| good	32.829 \| good	18.249 \| good	0.311 \| good	2.142 \| good	0.145 \| good
2026-10-10T02:00:00.000Z	38 \| good	6.627 \| good	29.795 \| good	22.688 \| good	0.317 \| good	2.484 \| good	0.145 \| good
2026-10-10T03:00:00.000Z	33 \| good	5.882 \| good	25.319 \| good	23.576 \| good	0.332 \| good	2.539 \| good	0.144 \| good
2026-10-10T04:00:00.000Z	27 \| good	5.432 \| good	23.251 \| good	23.834 \| good	0.339 \| good	2.461 \| good	0.141 \| good
2026-10-10T05:00:00.000Z	27 \| good	4.515 \| good	19.935 \| good	22.424 \| good	0.337 \| good	2.572 \| good	0.137 \| good
2026-10-10T06:00:00.000Z	27 \| good	4.99 \| good	21.266 \| good	21.658 \| good	0.333 \| good	2.838 \| good	0.134 \| good
2026-10-10T07:00:00.000Z	27 \| good	5.171 \| good	22.286 \| good	21.117 \| good	0.325 \| good	2.89 \| good	0.131 \| good
2026-10-10T08:00:00.000Z	33 \| good	5.505 \| good	23.351 \| good	21.203 \| good	0.308 \| good	2.66 \| good	0.127 \| good
2026-10-10T09:00:00.000Z	22 \| good	4.251 \| good	18.892 \| good	21.011 \| good	0.293 \| good	2.244 \| good	0.122 \| good
2026-10-10T10:00:00.000Z	20 \| good	3.426 \| good	14.98 \| good	21.906 \| good	0.278 \| good	2.084 \| good	0.118 \| good
2026-10-10T11:00:00.000Z	22 \| good	3.694 \| good	16.011 \| good	23.789 \| good	0.267 \| good	2.113 \| good	0.117 \| good
2026-10-10T12:00:00.000Z	22 \| good	4.07 \| good	18.018 \| good	24.412 \| good	0.264 \| good	2.145 \| good	0.117 \| good
2026-10-10T13:00:00.000Z	25 \| good	3.177 \| good	13.828 \| good	26.576 \| good	0.275 \| good	2.147 \| good	0.118 \| good
2026-10-10T14:00:00.000Z	24 \| good	3.173 \| good	13.86 \| good	26.355 \| good	0.289 \| good	2.378 \| good	0.12 \| good
2026-10-10T15:00:00.000Z	28 \| good	3.079 \| good	13.519 \| good	30.167 \| good	0.296 \| good	2.525 \| good	0.122 \| good
2026-10-10T16:00:00.000Z	30 \| good	2.546 \| good	9.99 \| good	32.148 \| good	0.295 \| good	1.817 \| good	0.121 \| good
2026-10-10T17:00:00.000Z	29 \| good	2.576 \| good	10.77 \| good	31.432 \| good	0.303 \| good	1.433 \| good	0.12 \| good
2026-10-10T18:00:00.000Z	31 \| good	2.794 \| good	11.584 \| good	33.591 \| good	0.323 \| good	1.104 \| good	0.119 \| good
2026-10-10T19:00:00.000Z	31 \| good	3.862 \| good	16.982 \| good	33.146 \| good	0.342 \| good	0.852 \| good	0.119 \| good
2026-10-10T20:00:00.000Z	31 \| good	5.175 \| good	22.207 \| good	33.244 \| good	0.352 \| good	0.687 \| good	0.119 \| good
2026-10-10T21:00:00.000Z	30 \| good	4.95 \| good	21.155 \| good	32.082 \| good	0.353 \| good	0.635 \| good	0.118 \| good
2026-10-10T22:00:00.000Z	29 \| good	4.488 \| good	19.186 \| good	31.023 \| good	0.35 \| good	0.662 \| good	0.118 \| good
2026-10-10T23:00:00.000Z	29 \| good	4.25 \| good	18.851 \| good	31.272 \| good	0.341 \| good	0.79 \| good	0.118 \| good
2026-10-11T00:00:00.000Z	26 \| good	4.174 \| good	18.754 \| good	28.161 \| good	0.325 \| good	0.994 \| good	0.118 \| good
2026-10-11T01:00:00.000Z	24 \| good	3.834 \| good	16.944 \| good	26.211 \| good	0.307 \| good	1.316 \| good	0.119 \| good
2026-10-11T02:00:00.000Z	25 \| good	3.373 \| good	14.903 \| good	26.76 \| good	0.3 \| good	1.788 \| good	0.122 \| good
2026-10-11T03:00:00.000Z	30 \| good	3.512 \| good	15.766 \| good	31.623 \| good	0.31 \| good	1.992 \| good	0.124 \| good
2026-10-11T04:00:00.000Z	22 \| good	4.152 \| good	17.954 \| good	20.593 \| good	0.312 \| good	2.124 \| good	0.126 \| good
2026-10-11T05:00:00.000Z	21 \| good	2.774 \| good	11.076 \| good	22.686 \| good	0.305 \| good	2.208 \| good	0.128 \| good
2026-10-11T06:00:00.000Z	24 \| good	2.808 \| good	11.882 \| good	25.981 \| good	0.297 \| good	2.235 \| good	0.128 \| good
2026-10-11T07:00:00.000Z	22 \| good	2.623 \| good	10.898 \| good	24.096 \| good	0.281 \| good	2.064 \| good	0.128 \| good
2026-10-11T08:00:00.000Z	22 \| good	3.215 \| good	14.078 \| good	24.424 \| good	0.263 \| good	1.733 \| good	0.128 \| good
2026-10-11T09:00:00.000Z	22 \| good	2.524 \| good	9.99 \| good	24.388 \| good	0.247 \| good	1.516 \| good	0.127 \| good
2026-10-11T10:00:00.000Z	23 \| good	1.554 \| good	5.988 \| good	25.123 \| good	0.236 \| good	1.396 \| good	0.127 \| good
2026-10-11T11:00:00.000Z	23 \| good	1.513 \| good	5.957 \| good	24.88 \| good	0.23 \| good	1.301 \| good	0.125 \| good
2026-10-11T12:00:00.000Z	49 \| good	9.262 \| good	15.008 \| good	35.857 \| good	0.225 \| good	1.242 \| good	0.124 \| good

Real-time air quality index in Foster City, California today

Common 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?