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

The current PM10 levels in Foster City, California are 11.44 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 0.714 ppb.

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

The current ozone (O3) levels at Foster City, California is 17.589 ppm.

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

The current nitrogen dioxide (NO2) levels at Foster City, California is 3.774 ppb.

Real-time 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)

Common air pollutants in Foster City, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.67 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

19.80 μg/m³

155

255

425

605+

Ozone (O₃)

21.90 ppb

201

201+

Sulfur Dioxide (SO₂)

0.65 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.81 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 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
2025-07-29T02:00:00.000Z	22 \| good	3.336 \| good	14.095 \| good	24.293 \| good	0.521 \| good	3.717 \| good	0.236 \| good
2025-07-29T03:00:00.000Z	24 \| good	2.609 \| good	11.083 \| good	25.948 \| good	0.49 \| good	4.267 \| good	0.239 \| good
2025-07-29T04:00:00.000Z	22 \| good	2.663 \| good	12.028 \| good	23.701 \| good	0.713 \| good	4.397 \| good	0.237 \| good
2025-07-29T05:00:00.000Z	27 \| good	2.458 \| good	10.785 \| good	28.628 \| good	0.708 \| good	5.542 \| good	0.298 \| good
2025-07-29T06:00:00.000Z	21 \| good	2.823 \| good	11.822 \| good	22.962 \| good	0.703 \| good	5.737 \| good	0.298 \| good
2025-07-29T07:00:00.000Z	18 \| good	2.898 \| good	12.188 \| good	18.958 \| good	0.719 \| good	4.159 \| good	0.239 \| good
2025-07-29T08:00:00.000Z	22 \| good	4.031 \| good	18.504 \| good	18.956 \| good	0.719 \| good	4.312 \| good	0.225 \| good
2025-07-29T09:00:00.000Z	27 \| good	4.506 \| good	20.347 \| good	15.584 \| good	0.722 \| good	3.152 \| good	0.235 \| good
2025-07-29T10:00:00.000Z	22 \| good	4.401 \| good	19.692 \| good	15.652 \| good	0.657 \| good	2.755 \| good	0.213 \| good
2025-07-29T11:00:00.000Z	22 \| good	4.437 \| good	19.277 \| good	15.744 \| good	0.653 \| good	3.333 \| good	0.2 \| good
2025-07-29T12:00:00.000Z	22 \| good	3.922 \| good	17.248 \| good	13.568 \| good	0.654 \| good	3.765 \| good	0.199 \| good
2025-07-29T13:00:00.000Z	22 \| good	3.825 \| good	16.475 \| good	14.091 \| good	0.589 \| good	6.389 \| good	0.286 \| good
2025-07-29T14:00:00.000Z	22 \| good	4.066 \| good	17.552 \| good	9.659 \| good	0.31 \| good	6.02 \| good	0.271 \| good
2025-07-29T15:00:00.000Z	22 \| good	3.598 \| good	15.975 \| good	12.332 \| good	0.555 \| good	5.283 \| good	0.314 \| good
2025-07-29T16:00:00.000Z	16 \| good	3.128 \| good	13.721 \| good	11.806 \| good	0.333 \| good	6.24 \| good	0.303 \| good
2025-07-29T17:00:00.000Z	22 \| good	4.437 \| good	19.945 \| good	18.341 \| good	0.349 \| good	6.941 \| good	0.3 \| good
2025-07-29T18:00:00.000Z	33 \| good	5.626 \| good	24.494 \| good	16.028 \| good	0.341 \| good	5.672 \| good	0.29 \| good
2025-07-29T19:00:00.000Z	33 \| good	6.224 \| good	27.88 \| good	17.306 \| good	0.637 \| good	6.442 \| good	0.3 \| good
2025-07-29T20:00:00.000Z	33 \| good	6.362 \| good	28.189 \| good	18.914 \| good	0.352 \| good	5.748 \| good	0.277 \| good
2025-07-29T21:00:00.000Z	38 \| good	7.04 \| good	31.549 \| good	19.595 \| good	0.306 \| good	4.19 \| good	0.263 \| good
2025-07-29T22:00:00.000Z	38 \| good	7.231 \| good	32.429 \| good	22.703 \| good	0.567 \| good	3.764 \| good	0.261 \| good
2025-07-29T23:00:00.000Z	38 \| good	6.572 \| good	29.306 \| good	23.079 \| good	0.565 \| good	3.372 \| good	0.261 \| good
2025-07-30T00:00:00.000Z	27 \| good	5.064 \| good	22.855 \| good	24.12 \| good	0.591 \| good	3.336 \| good	0.238 \| good
2025-07-30T01:00:00.000Z	23 \| good	3.982 \| good	16.762 \| good	24.646 \| good	2.339 \| good	3.331 \| good	0.238 \| good
2025-07-30T02:00:00.000Z	27 \| good	3.406 \| good	14.809 \| good	28.729 \| good	10.633 \| good	3.501 \| good	0.239 \| good
2025-07-30T03:00:00.000Z	18 \| good	2.094 \| good	8.586 \| good	19.17 \| good	0.397 \| good	3.604 \| good	0.1 \| good
2025-07-30T04:00:00.000Z	22 \| good	4.364 \| good	19.922 \| good	22.019 \| good	2.257 \| good	3.822 \| good	0.238 \| good
2025-07-30T05:00:00.000Z	22 \| good	4.299 \| good	19.118 \| good	18.274 \| good	1.408 \| good	3.221 \| good	0.238 \| good
2025-07-30T06:00:00.000Z	22 \| good	4.241 \| good	18.65 \| good	19.161 \| good	0.753 \| good	3.416 \| good	0.257 \| good
2025-07-30T07:00:00.000Z	22 \| good	4.195 \| good	18.907 \| good	19.149 \| good	0.732 \| good	2.349 \| good	0.257 \| good
2025-07-30T08:00:00.000Z	22 \| good	3.621 \| good	15.214 \| good	18.42 \| good	0.636 \| good	2.162 \| good	0.243 \| good
2025-07-30T09:00:00.000Z	16 \| good	3.364 \| good	14.39 \| good	17.017 \| good	0.59 \| good	1.491 \| good	0.194 \| good
2025-07-30T10:00:00.000Z	16 \| good	3.37 \| good	14.136 \| good	16.893 \| good	0.658 \| good	1.416 \| good	0.194 \| good
2025-07-30T11:00:00.000Z	22 \| good	3.841 \| good	17.107 \| good	15.64 \| good	0.688 \| good	1.459 \| good	0.194 \| good
2025-07-30T12:00:00.000Z	22 \| good	3.813 \| good	17.163 \| good	16.582 \| good	0.683 \| good	1.305 \| good	0.194 \| good
2025-07-30T13:00:00.000Z	16 \| good	3.19 \| good	13.704 \| good	16.364 \| good	0.641 \| good	3.005 \| good	0.281 \| good
2025-07-30T14:00:00.000Z	15 \| good	2.274 \| good	9.193 \| good	15.529 \| good	0.376 \| good	3.176 \| good	0.22 \| good
2025-07-30T15:00:00.000Z	17 \| good	2.448 \| good	10.313 \| good	17.595 \| good	0.717 \| good	3.86 \| good	0.243 \| good
2025-07-30T16:00:00.000Z	16 \| good	2.79 \| good	12.718 \| good	17.482 \| good	0.693 \| good	4.798 \| good	0.236 \| good
2025-07-30T17:00:00.000Z	22 \| good	3.672 \| good	16.562 \| good	17.626 \| good	0.712 \| good	5.178 \| good	0.251 \| good
2025-07-30T18:00:00.000Z	27 \| good	4.6 \| good	20.505 \| good	19.013 \| good	0.666 \| good	4.651 \| good	0.264 \| good
2025-07-30T19:00:00.000Z	33 \| good	6.347 \| good	28.602 \| good	19.374 \| good	0.476 \| good	4.024 \| good	0.251 \| good
2025-07-30T20:00:00.000Z	33 \| good	6.46 \| good	29.334 \| good	20.695 \| good	0.493 \| good	4.323 \| good	0.251 \| good
2025-07-30T21:00:00.000Z	27 \| good	4.915 \| good	21.943 \| good	19.151 \| good	0.667 \| good	3.16 \| good	0.274 \| good
2025-07-30T22:00:00.000Z	22 \| good	4.431 \| good	18.721 \| good	20.518 \| good	0.699 \| good	2.42 \| good	0.261 \| good
2025-07-30T23:00:00.000Z	22 \| good	4.353 \| good	18.563 \| good	21.985 \| good	0.671 \| good	2.257 \| good	0.235 \| good
2025-07-31T00:00:00.000Z	22 \| good	4.37 \| good	18.388 \| good	22.16 \| good	0.657 \| good	2.864 \| good	0.239 \| good
2025-07-31T01:00:00.000Z	22 \| good	4.251 \| good	17.697 \| good	20.734 \| good	0.659 \| good	3.012 \| good	0.238 \| good
2025-07-31T01:00:00.000Z	27 \| good	4.674 \| good	19.797 \| good	21.898 \| good	0.654 \| good	2.811 \| good	0.242 \| good
2025-07-30T17:00:00.000Z	27 \| good	4.853 \| good	20.804 \| good	21.223 \| good	0.497 \| good	1.907 \| good	0.086 \| good
2025-07-30T18:00:00.000Z	27 \| good	4.742 \| good	20.673 \| good	22.929 \| good	0.504 \| good	1.769 \| good	0.087 \| good
2025-07-30T19:00:00.000Z	27 \| good	4.925 \| good	21.566 \| good	22.769 \| good	0.529 \| good	1.672 \| good	0.087 \| good
2025-07-30T20:00:00.000Z	33 \| good	5.576 \| good	23.808 \| good	22.511 \| good	0.553 \| good	1.574 \| good	0.086 \| good
2025-07-30T21:00:00.000Z	33 \| good	5.97 \| good	26.339 \| good	21.373 \| good	0.578 \| good	1.476 \| good	0.086 \| good
2025-07-30T22:00:00.000Z	27 \| good	4.676 \| good	20.442 \| good	21.928 \| good	0.555 \| good	1.653 \| good	0.085 \| good
2025-07-30T23:00:00.000Z	22 \| good	4.053 \| good	17.501 \| good	21.339 \| good	0.532 \| good	1.829 \| good	0.084 \| good
2025-07-31T00:00:00.000Z	22 \| good	4.296 \| good	18.571 \| good	20.328 \| good	0.51 \| good	2.006 \| good	0.084 \| good
2025-07-31T01:00:00.000Z	22 \| good	3.726 \| good	16.31 \| good	19.005 \| good	0.493 \| good	2.69 \| good	0.084 \| good
2025-07-31T02:00:00.000Z	18 \| good	2.763 \| good	11.533 \| good	18.688 \| good	0.477 \| good	3.375 \| good	0.083 \| good
2025-07-31T03:00:00.000Z	17 \| good	2.29 \| good	9.644 \| good	17.908 \| good	0.46 \| good	4.059 \| good	0.083 \| good
2025-07-31T04:00:00.000Z	16 \| good	2.185 \| good	8.967 \| good	16.946 \| good	0.474 \| good	4.175 \| good	0.081 \| good
2025-07-31T05:00:00.000Z	16 \| good	2.565 \| good	10.154 \| good	17.235 \| good	0.488 \| good	4.29 \| good	0.079 \| good
2025-07-31T06:00:00.000Z	16 \| good	3.034 \| good	12.297 \| good	17.408 \| good	0.502 \| good	4.406 \| good	0.077 \| good
2025-07-31T07:00:00.000Z	17 \| good	2.37 \| good	9.876 \| good	18.03 \| good	0.506 \| good	4.27 \| good	0.076 \| good
2025-07-31T08:00:00.000Z	17 \| good	2.775 \| good	11.676 \| good	17.987 \| good	0.509 \| good	4.134 \| good	0.076 \| good
2025-07-31T09:00:00.000Z	16 \| good	3.418 \| good	14.922 \| good	16.225 \| good	0.512 \| good	3.998 \| good	0.075 \| good
2025-07-31T10:00:00.000Z	16 \| good	3.228 \| good	13.914 \| good	16.183 \| good	0.524 \| good	3.828 \| good	0.074 \| good
2025-07-31T11:00:00.000Z	16 \| good	3.111 \| good	13.631 \| good	15.552 \| good	0.536 \| good	3.658 \| good	0.072 \| good
2025-07-31T12:00:00.000Z	14 \| good	1.557 \| good	6.694 \| good	14.925 \| good	0.548 \| good	3.488 \| good	0.071 \| good
2025-07-31T13:00:00.000Z	16 \| good	2.742 \| good	10.961 \| good	13.912 \| good	0.561 \| good	3.167 \| good	0.071 \| good
2025-07-31T14:00:00.000Z	12 \| good	2.283 \| good	9.668 \| good	13.194 \| good	0.574 \| good	2.847 \| good	0.071 \| good
2025-07-31T15:00:00.000Z	16 \| good	3.421 \| good	14.67 \| good	16.303 \| good	0.587 \| good	2.527 \| good	0.071 \| good
2025-07-31T16:00:00.000Z	22 \| good	4.084 \| good	17.86 \| good	18.319 \| good	0.635 \| good	2.5 \| good	0.075 \| good
2025-07-31T17:00:00.000Z	27 \| good	4.735 \| good	20.83 \| good	20.911 \| good	0.683 \| good	2.474 \| good	0.079 \| good
2025-07-31T18:00:00.000Z	27 \| good	5.353 \| good	22.894 \| good	23.057 \| good	0.731 \| good	2.447 \| good	0.082 \| good
2025-07-31T19:00:00.000Z	33 \| good	5.646 \| good	24.718 \| good	22.937 \| good	0.753 \| good	2.293 \| good	0.082 \| good
2025-07-31T20:00:00.000Z	33 \| good	5.827 \| good	26.271 \| good	22.526 \| good	0.775 \| good	2.139 \| good	0.082 \| good
2025-07-31T21:00:00.000Z	33 \| good	5.968 \| good	26.407 \| good	21.219 \| good	0.797 \| good	1.985 \| good	0.082 \| good
2025-07-31T22:00:00.000Z	33 \| good	6.048 \| good	26.525 \| good	22.888 \| good	0.736 \| good	2.082 \| good	0.082 \| good
2025-07-31T23:00:00.000Z	27 \| good	5.37 \| good	22.744 \| good	22.094 \| good	0.674 \| good	2.178 \| good	0.081 \| good
2025-08-01T00:00:00.000Z	27 \| good	4.589 \| good	20.321 \| good	21.784 \| good	0.613 \| good	2.275 \| good	0.081 \| good
2025-08-01T01:00:00.000Z	22 \| good	4.091 \| good	17.63 \| good	20.616 \| good	0.58 \| good	3.249 \| good	0.083 \| good
2025-08-01T02:00:00.000Z	19 \| good	2.898 \| good	11.851 \| good	20.247 \| good	0.548 \| good	4.222 \| good	0.085 \| good
2025-08-01T03:00:00.000Z	18 \| good	2.505 \| good	9.972 \| good	18.554 \| good	0.515 \| good	5.196 \| good	0.087 \| good
2025-08-01T04:00:00.000Z	18 \| good	2.993 \| good	12.069 \| good	18.992 \| good	0.534 \| good	5.227 \| good	0.087 \| good
2025-08-01T05:00:00.000Z	18 \| good	3.024 \| good	12.114 \| good	19.253 \| good	0.553 \| good	5.259 \| good	0.086 \| good
2025-08-01T06:00:00.000Z	22 \| good	4.017 \| good	17.964 \| good	19.125 \| good	0.572 \| good	5.29 \| good	0.085 \| good
2025-08-01T07:00:00.000Z	19 \| good	3.173 \| good	13.756 \| good	20.074 \| good	0.548 \| good	4.753 \| good	0.083 \| good
2025-08-01T08:00:00.000Z	18 \| good	3.153 \| good	13.754 \| good	19.227 \| good	0.524 \| good	4.215 \| good	0.081 \| good
2025-08-01T09:00:00.000Z	22 \| good	3.774 \| good	16.739 \| good	17.831 \| good	0.501 \| good	3.678 \| good	0.079 \| good
2025-08-01T10:00:00.000Z	22 \| good	3.534 \| good	15.798 \| good	17.468 \| good	0.514 \| good	3.52 \| good	0.078 \| good
2025-08-01T11:00:00.000Z	16 \| good	3.349 \| good	14.812 \| good	15.181 \| good	0.528 \| good	3.363 \| good	0.077 \| good
2025-08-01T12:00:00.000Z	14 \| good	2.128 \| good	8.744 \| good	14.632 \| good	0.541 \| good	3.205 \| good	0.076 \| good
2025-08-01T13:00:00.000Z	16 \| good	3.24 \| good	14.392 \| good	11.225 \| good	0.544 \| good	2.849 \| good	0.076 \| good
2025-08-01T14:00:00.000Z	22 \| good	3.87 \| good	16.704 \| good	11.46 \| good	0.546 \| good	2.493 \| good	0.076 \| good
2025-08-01T15:00:00.000Z	22 \| good	4.231 \| good	18.548 \| good	13.851 \| good	0.548 \| good	2.136 \| good	0.077 \| good
2025-08-01T16:00:00.000Z	27 \| good	4.57 \| good	19.778 \| good	16.245 \| good	0.582 \| good	2.084 \| good	0.079 \| good

Foster City

Empower business decisions with accurate air quality data

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

0.34ppm

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 11:00:00 on 2025-07-29.

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 2025-07-30.

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

The real-time air quality index in Foster City, California is 17, currently categorized as Good.

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

The most common pollutant in Foster City, California is O3.

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 2.691 μg/m³.

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

The current PM₁₀ levels in Foster City, California are 11.44 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 0.247 ppm.

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

The current sulfur dioxide (SO₂) levels in Foster City, California are 0.714 ppb.

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

The current ozone (O₃) levels at Foster City, California is 17.589 ppm.

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

The current nitrogen dioxide (NO₂) levels at Foster City, California is 3.774 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-29T02:00:00.000Z	22 \| good	3.336 \| good	14.095 \| good	24.293 \| good	0.521 \| good	3.717 \| good	0.236 \| good
2025-07-29T03:00:00.000Z	24 \| good	2.609 \| good	11.083 \| good	25.948 \| good	0.49 \| good	4.267 \| good	0.239 \| good
2025-07-29T04:00:00.000Z	22 \| good	2.663 \| good	12.028 \| good	23.701 \| good	0.713 \| good	4.397 \| good	0.237 \| good
2025-07-29T05:00:00.000Z	27 \| good	2.458 \| good	10.785 \| good	28.628 \| good	0.708 \| good	5.542 \| good	0.298 \| good
2025-07-29T06:00:00.000Z	21 \| good	2.823 \| good	11.822 \| good	22.962 \| good	0.703 \| good	5.737 \| good	0.298 \| good
2025-07-29T07:00:00.000Z	18 \| good	2.898 \| good	12.188 \| good	18.958 \| good	0.719 \| good	4.159 \| good	0.239 \| good
2025-07-29T08:00:00.000Z	22 \| good	4.031 \| good	18.504 \| good	18.956 \| good	0.719 \| good	4.312 \| good	0.225 \| good
2025-07-29T09:00:00.000Z	27 \| good	4.506 \| good	20.347 \| good	15.584 \| good	0.722 \| good	3.152 \| good	0.235 \| good
2025-07-29T10:00:00.000Z	22 \| good	4.401 \| good	19.692 \| good	15.652 \| good	0.657 \| good	2.755 \| good	0.213 \| good
2025-07-29T11:00:00.000Z	22 \| good	4.437 \| good	19.277 \| good	15.744 \| good	0.653 \| good	3.333 \| good	0.2 \| good
2025-07-29T12:00:00.000Z	22 \| good	3.922 \| good	17.248 \| good	13.568 \| good	0.654 \| good	3.765 \| good	0.199 \| good
2025-07-29T13:00:00.000Z	22 \| good	3.825 \| good	16.475 \| good	14.091 \| good	0.589 \| good	6.389 \| good	0.286 \| good
2025-07-29T14:00:00.000Z	22 \| good	4.066 \| good	17.552 \| good	9.659 \| good	0.31 \| good	6.02 \| good	0.271 \| good
2025-07-29T15:00:00.000Z	22 \| good	3.598 \| good	15.975 \| good	12.332 \| good	0.555 \| good	5.283 \| good	0.314 \| good
2025-07-29T16:00:00.000Z	16 \| good	3.128 \| good	13.721 \| good	11.806 \| good	0.333 \| good	6.24 \| good	0.303 \| good
2025-07-29T17:00:00.000Z	22 \| good	4.437 \| good	19.945 \| good	18.341 \| good	0.349 \| good	6.941 \| good	0.3 \| good
2025-07-29T18:00:00.000Z	33 \| good	5.626 \| good	24.494 \| good	16.028 \| good	0.341 \| good	5.672 \| good	0.29 \| good
2025-07-29T19:00:00.000Z	33 \| good	6.224 \| good	27.88 \| good	17.306 \| good	0.637 \| good	6.442 \| good	0.3 \| good
2025-07-29T20:00:00.000Z	33 \| good	6.362 \| good	28.189 \| good	18.914 \| good	0.352 \| good	5.748 \| good	0.277 \| good
2025-07-29T21:00:00.000Z	38 \| good	7.04 \| good	31.549 \| good	19.595 \| good	0.306 \| good	4.19 \| good	0.263 \| good
2025-07-29T22:00:00.000Z	38 \| good	7.231 \| good	32.429 \| good	22.703 \| good	0.567 \| good	3.764 \| good	0.261 \| good
2025-07-29T23:00:00.000Z	38 \| good	6.572 \| good	29.306 \| good	23.079 \| good	0.565 \| good	3.372 \| good	0.261 \| good
2025-07-30T00:00:00.000Z	27 \| good	5.064 \| good	22.855 \| good	24.12 \| good	0.591 \| good	3.336 \| good	0.238 \| good
2025-07-30T01:00:00.000Z	23 \| good	3.982 \| good	16.762 \| good	24.646 \| good	2.339 \| good	3.331 \| good	0.238 \| good
2025-07-30T02:00:00.000Z	27 \| good	3.406 \| good	14.809 \| good	28.729 \| good	10.633 \| good	3.501 \| good	0.239 \| good
2025-07-30T03:00:00.000Z	18 \| good	2.094 \| good	8.586 \| good	19.17 \| good	0.397 \| good	3.604 \| good	0.1 \| good
2025-07-30T04:00:00.000Z	22 \| good	4.364 \| good	19.922 \| good	22.019 \| good	2.257 \| good	3.822 \| good	0.238 \| good
2025-07-30T05:00:00.000Z	22 \| good	4.299 \| good	19.118 \| good	18.274 \| good	1.408 \| good	3.221 \| good	0.238 \| good
2025-07-30T06:00:00.000Z	22 \| good	4.241 \| good	18.65 \| good	19.161 \| good	0.753 \| good	3.416 \| good	0.257 \| good
2025-07-30T07:00:00.000Z	22 \| good	4.195 \| good	18.907 \| good	19.149 \| good	0.732 \| good	2.349 \| good	0.257 \| good
2025-07-30T08:00:00.000Z	22 \| good	3.621 \| good	15.214 \| good	18.42 \| good	0.636 \| good	2.162 \| good	0.243 \| good
2025-07-30T09:00:00.000Z	16 \| good	3.364 \| good	14.39 \| good	17.017 \| good	0.59 \| good	1.491 \| good	0.194 \| good
2025-07-30T10:00:00.000Z	16 \| good	3.37 \| good	14.136 \| good	16.893 \| good	0.658 \| good	1.416 \| good	0.194 \| good
2025-07-30T11:00:00.000Z	22 \| good	3.841 \| good	17.107 \| good	15.64 \| good	0.688 \| good	1.459 \| good	0.194 \| good
2025-07-30T12:00:00.000Z	22 \| good	3.813 \| good	17.163 \| good	16.582 \| good	0.683 \| good	1.305 \| good	0.194 \| good
2025-07-30T13:00:00.000Z	16 \| good	3.19 \| good	13.704 \| good	16.364 \| good	0.641 \| good	3.005 \| good	0.281 \| good
2025-07-30T14:00:00.000Z	15 \| good	2.274 \| good	9.193 \| good	15.529 \| good	0.376 \| good	3.176 \| good	0.22 \| good
2025-07-30T15:00:00.000Z	17 \| good	2.448 \| good	10.313 \| good	17.595 \| good	0.717 \| good	3.86 \| good	0.243 \| good
2025-07-30T16:00:00.000Z	16 \| good	2.79 \| good	12.718 \| good	17.482 \| good	0.693 \| good	4.798 \| good	0.236 \| good
2025-07-30T17:00:00.000Z	22 \| good	3.672 \| good	16.562 \| good	17.626 \| good	0.712 \| good	5.178 \| good	0.251 \| good
2025-07-30T18:00:00.000Z	27 \| good	4.6 \| good	20.505 \| good	19.013 \| good	0.666 \| good	4.651 \| good	0.264 \| good
2025-07-30T19:00:00.000Z	33 \| good	6.347 \| good	28.602 \| good	19.374 \| good	0.476 \| good	4.024 \| good	0.251 \| good
2025-07-30T20:00:00.000Z	33 \| good	6.46 \| good	29.334 \| good	20.695 \| good	0.493 \| good	4.323 \| good	0.251 \| good
2025-07-30T21:00:00.000Z	27 \| good	4.915 \| good	21.943 \| good	19.151 \| good	0.667 \| good	3.16 \| good	0.274 \| good
2025-07-30T22:00:00.000Z	22 \| good	4.431 \| good	18.721 \| good	20.518 \| good	0.699 \| good	2.42 \| good	0.261 \| good
2025-07-30T23:00:00.000Z	22 \| good	4.353 \| good	18.563 \| good	21.985 \| good	0.671 \| good	2.257 \| good	0.235 \| good
2025-07-31T00:00:00.000Z	22 \| good	4.37 \| good	18.388 \| good	22.16 \| good	0.657 \| good	2.864 \| good	0.239 \| good
2025-07-31T01:00:00.000Z	22 \| good	4.251 \| good	17.697 \| good	20.734 \| good	0.659 \| good	3.012 \| good	0.238 \| good
2025-07-31T01:00:00.000Z	27 \| good	4.674 \| good	19.797 \| good	21.898 \| good	0.654 \| good	2.811 \| good	0.242 \| good
2025-07-30T17:00:00.000Z	27 \| good	4.853 \| good	20.804 \| good	21.223 \| good	0.497 \| good	1.907 \| good	0.086 \| good
2025-07-30T18:00:00.000Z	27 \| good	4.742 \| good	20.673 \| good	22.929 \| good	0.504 \| good	1.769 \| good	0.087 \| good
2025-07-30T19:00:00.000Z	27 \| good	4.925 \| good	21.566 \| good	22.769 \| good	0.529 \| good	1.672 \| good	0.087 \| good
2025-07-30T20:00:00.000Z	33 \| good	5.576 \| good	23.808 \| good	22.511 \| good	0.553 \| good	1.574 \| good	0.086 \| good
2025-07-30T21:00:00.000Z	33 \| good	5.97 \| good	26.339 \| good	21.373 \| good	0.578 \| good	1.476 \| good	0.086 \| good
2025-07-30T22:00:00.000Z	27 \| good	4.676 \| good	20.442 \| good	21.928 \| good	0.555 \| good	1.653 \| good	0.085 \| good
2025-07-30T23:00:00.000Z	22 \| good	4.053 \| good	17.501 \| good	21.339 \| good	0.532 \| good	1.829 \| good	0.084 \| good
2025-07-31T00:00:00.000Z	22 \| good	4.296 \| good	18.571 \| good	20.328 \| good	0.51 \| good	2.006 \| good	0.084 \| good
2025-07-31T01:00:00.000Z	22 \| good	3.726 \| good	16.31 \| good	19.005 \| good	0.493 \| good	2.69 \| good	0.084 \| good
2025-07-31T02:00:00.000Z	18 \| good	2.763 \| good	11.533 \| good	18.688 \| good	0.477 \| good	3.375 \| good	0.083 \| good
2025-07-31T03:00:00.000Z	17 \| good	2.29 \| good	9.644 \| good	17.908 \| good	0.46 \| good	4.059 \| good	0.083 \| good
2025-07-31T04:00:00.000Z	16 \| good	2.185 \| good	8.967 \| good	16.946 \| good	0.474 \| good	4.175 \| good	0.081 \| good
2025-07-31T05:00:00.000Z	16 \| good	2.565 \| good	10.154 \| good	17.235 \| good	0.488 \| good	4.29 \| good	0.079 \| good
2025-07-31T06:00:00.000Z	16 \| good	3.034 \| good	12.297 \| good	17.408 \| good	0.502 \| good	4.406 \| good	0.077 \| good
2025-07-31T07:00:00.000Z	17 \| good	2.37 \| good	9.876 \| good	18.03 \| good	0.506 \| good	4.27 \| good	0.076 \| good
2025-07-31T08:00:00.000Z	17 \| good	2.775 \| good	11.676 \| good	17.987 \| good	0.509 \| good	4.134 \| good	0.076 \| good
2025-07-31T09:00:00.000Z	16 \| good	3.418 \| good	14.922 \| good	16.225 \| good	0.512 \| good	3.998 \| good	0.075 \| good
2025-07-31T10:00:00.000Z	16 \| good	3.228 \| good	13.914 \| good	16.183 \| good	0.524 \| good	3.828 \| good	0.074 \| good
2025-07-31T11:00:00.000Z	16 \| good	3.111 \| good	13.631 \| good	15.552 \| good	0.536 \| good	3.658 \| good	0.072 \| good
2025-07-31T12:00:00.000Z	14 \| good	1.557 \| good	6.694 \| good	14.925 \| good	0.548 \| good	3.488 \| good	0.071 \| good
2025-07-31T13:00:00.000Z	16 \| good	2.742 \| good	10.961 \| good	13.912 \| good	0.561 \| good	3.167 \| good	0.071 \| good
2025-07-31T14:00:00.000Z	12 \| good	2.283 \| good	9.668 \| good	13.194 \| good	0.574 \| good	2.847 \| good	0.071 \| good
2025-07-31T15:00:00.000Z	16 \| good	3.421 \| good	14.67 \| good	16.303 \| good	0.587 \| good	2.527 \| good	0.071 \| good
2025-07-31T16:00:00.000Z	22 \| good	4.084 \| good	17.86 \| good	18.319 \| good	0.635 \| good	2.5 \| good	0.075 \| good
2025-07-31T17:00:00.000Z	27 \| good	4.735 \| good	20.83 \| good	20.911 \| good	0.683 \| good	2.474 \| good	0.079 \| good
2025-07-31T18:00:00.000Z	27 \| good	5.353 \| good	22.894 \| good	23.057 \| good	0.731 \| good	2.447 \| good	0.082 \| good
2025-07-31T19:00:00.000Z	33 \| good	5.646 \| good	24.718 \| good	22.937 \| good	0.753 \| good	2.293 \| good	0.082 \| good
2025-07-31T20:00:00.000Z	33 \| good	5.827 \| good	26.271 \| good	22.526 \| good	0.775 \| good	2.139 \| good	0.082 \| good
2025-07-31T21:00:00.000Z	33 \| good	5.968 \| good	26.407 \| good	21.219 \| good	0.797 \| good	1.985 \| good	0.082 \| good
2025-07-31T22:00:00.000Z	33 \| good	6.048 \| good	26.525 \| good	22.888 \| good	0.736 \| good	2.082 \| good	0.082 \| good
2025-07-31T23:00:00.000Z	27 \| good	5.37 \| good	22.744 \| good	22.094 \| good	0.674 \| good	2.178 \| good	0.081 \| good
2025-08-01T00:00:00.000Z	27 \| good	4.589 \| good	20.321 \| good	21.784 \| good	0.613 \| good	2.275 \| good	0.081 \| good
2025-08-01T01:00:00.000Z	22 \| good	4.091 \| good	17.63 \| good	20.616 \| good	0.58 \| good	3.249 \| good	0.083 \| good
2025-08-01T02:00:00.000Z	19 \| good	2.898 \| good	11.851 \| good	20.247 \| good	0.548 \| good	4.222 \| good	0.085 \| good
2025-08-01T03:00:00.000Z	18 \| good	2.505 \| good	9.972 \| good	18.554 \| good	0.515 \| good	5.196 \| good	0.087 \| good
2025-08-01T04:00:00.000Z	18 \| good	2.993 \| good	12.069 \| good	18.992 \| good	0.534 \| good	5.227 \| good	0.087 \| good
2025-08-01T05:00:00.000Z	18 \| good	3.024 \| good	12.114 \| good	19.253 \| good	0.553 \| good	5.259 \| good	0.086 \| good
2025-08-01T06:00:00.000Z	22 \| good	4.017 \| good	17.964 \| good	19.125 \| good	0.572 \| good	5.29 \| good	0.085 \| good
2025-08-01T07:00:00.000Z	19 \| good	3.173 \| good	13.756 \| good	20.074 \| good	0.548 \| good	4.753 \| good	0.083 \| good
2025-08-01T08:00:00.000Z	18 \| good	3.153 \| good	13.754 \| good	19.227 \| good	0.524 \| good	4.215 \| good	0.081 \| good
2025-08-01T09:00:00.000Z	22 \| good	3.774 \| good	16.739 \| good	17.831 \| good	0.501 \| good	3.678 \| good	0.079 \| good
2025-08-01T10:00:00.000Z	22 \| good	3.534 \| good	15.798 \| good	17.468 \| good	0.514 \| good	3.52 \| good	0.078 \| good
2025-08-01T11:00:00.000Z	16 \| good	3.349 \| good	14.812 \| good	15.181 \| good	0.528 \| good	3.363 \| good	0.077 \| good
2025-08-01T12:00:00.000Z	14 \| good	2.128 \| good	8.744 \| good	14.632 \| good	0.541 \| good	3.205 \| good	0.076 \| good
2025-08-01T13:00:00.000Z	16 \| good	3.24 \| good	14.392 \| good	11.225 \| good	0.544 \| good	2.849 \| good	0.076 \| good
2025-08-01T14:00:00.000Z	22 \| good	3.87 \| good	16.704 \| good	11.46 \| good	0.546 \| good	2.493 \| good	0.076 \| good
2025-08-01T15:00:00.000Z	22 \| good	4.231 \| good	18.548 \| good	13.851 \| good	0.548 \| good	2.136 \| good	0.077 \| good
2025-08-01T16:00:00.000Z	27 \| good	4.57 \| good	19.778 \| good	16.245 \| good	0.582 \| good	2.084 \| good	0.079 \| 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?