What is the current level of PM10 in Walnut Creek, California?

Walnut Creek, California currently has a PM10 concentration of 75.208 μg/m3.

What is the current level of sulfur dioxide (SO2) in Walnut Creek, California?

The current sulfur dioxide (SO2) concentration in Walnut Creek, California is 0.358 ppb.

What is the current level of ozone (O3) in Walnut Creek, California?

Walnut Creek, California currently has an ozone (O3) concentration of 13.879 ppm.

What is the current level of nitrogen dioxide (NO2) in Walnut Creek, California?

The current level of nitrogen dioxide (NO2) in Walnut Creek, California is 5.2 ppb.

Current air quality index in Walnut Creek, California today

Q: What is the PM2.5 concentration in Walnut Creek, California right now?

Walnut Creek, California currently has a PM2.5 concentration of 16.972 μg/m3.

Stay updated with real-time air quality in Walnut Creek, California featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Moderate

Walnut Creek, California

Last updated: ... (Local time)

Common air pollutants in Walnut Creek, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

16.97 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

75.21 μg/m³

155

255

425

605+

Ozone (O₃)

13.88 ppb

201

201+

Sulfur Dioxide (SO₂)

0.36 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.20 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.39 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Walnut Creek, California

Get Live Pollen Counts

Walnut Creek, California

Scroll To Air Quality Map

Track live Walnut Creek, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T23:00:00.000Z	54 \| moderate	11.055 \| good	49.599 \| good	14.79 \| good	0.366 \| good	7.359 \| good	0.385 \| good
2025-12-06T00:00:00.000Z	60 \| moderate	14.375 \| fine	64.592 \| fine	14.081 \| good	0.44 \| good	8.143 \| good	0.381 \| good
2025-12-06T01:00:00.000Z	60 \| moderate	13.743 \| fine	62.117 \| fine	13.163 \| good	0.351 \| good	9.397 \| good	0.378 \| good
2025-12-06T02:00:00.000Z	58 \| moderate	12.703 \| fine	56.725 \| fine	10.509 \| good	0.344 \| good	11.66 \| good	0.468 \| good
2025-12-06T03:00:00.000Z	60 \| moderate	13.89 \| fine	62.113 \| fine	7.761 \| good	0.252 \| good	14.017 \| good	0.472 \| good
2025-12-06T04:00:00.000Z	62 \| moderate	15.284 \| fine	68.972 \| fine	6.659 \| good	0.345 \| good	15.104 \| good	0.486 \| good
2025-12-06T05:00:00.000Z	66 \| moderate	16.889 \| fine	74.389 \| fine	5.708 \| good	0.34 \| good	15.274 \| good	0.481 \| good
2025-12-06T06:00:00.000Z	67 \| moderate	18.352 \| fine	80.596 \| fine	4.866 \| good	0.351 \| good	15.629 \| good	0.572 \| good
2025-12-06T07:00:00.000Z	66 \| moderate	17.49 \| fine	77.067 \| fine	5.603 \| good	0.437 \| good	14.099 \| good	0.478 \| good
2025-12-06T08:00:00.000Z	66 \| moderate	16.991 \| fine	75.137 \| fine	6.732 \| good	0.339 \| good	12.917 \| good	0.47 \| good
2025-12-06T09:00:00.000Z	66 \| moderate	16.991 \| fine	75.137 \| fine	6.737 \| good	0.339 \| good	12.917 \| good	0.464 \| good
2025-12-06T10:00:00.000Z	66 \| moderate	16.991 \| fine	75.137 \| fine	6.715 \| good	0.927 \| good	8.996 \| good	0.407 \| good
2025-12-06T11:00:00.000Z	54 \| moderate	10.896 \| good	55.592 \| fine	6.962 \| good	0.862 \| good	9.163 \| good	0.367 \| good
2025-12-06T12:00:00.000Z	60 \| moderate	14.408 \| fine	54.375 \| good	4.385 \| good	0.37 \| good	6.828 \| good	0.353 \| good
2025-12-06T13:00:00.000Z	54 \| moderate	11.333 \| good	50.818 \| good	14.09 \| good	0.249 \| good	5.06 \| good	0.299 \| good
2025-12-06T14:00:00.000Z	54 \| moderate	10.89 \| good	48.995 \| good	13.266 \| good	0.279 \| good	5.205 \| good	0.288 \| good
2025-12-06T15:00:00.000Z	64 \| moderate	16.072 \| fine	72.416 \| fine	10.693 \| good	0.255 \| good	6.813 \| good	0.381 \| good
2025-12-06T16:00:00.000Z	71 \| moderate	19.939 \| fine	87.58 \| fine	10.875 \| good	0.254 \| good	6.576 \| good	0.388 \| good
2025-12-06T17:00:00.000Z	67 \| moderate	17.546 \| fine	78.599 \| fine	11.869 \| good	0.266 \| good	6.386 \| good	0.383 \| good
2025-12-06T18:00:00.000Z	64 \| moderate	16.264 \| fine	72.898 \| fine	11.808 \| good	0.286 \| good	6.554 \| good	0.391 \| good
2025-12-06T19:00:00.000Z	67 \| moderate	17.733 \| fine	79.361 \| fine	11.949 \| good	0.28 \| good	5.985 \| good	0.483 \| good
2025-12-06T20:00:00.000Z	64 \| moderate	16.37 \| fine	72.568 \| fine	11.224 \| good	0.281 \| good	6.089 \| good	0.395 \| good
2025-12-06T21:00:00.000Z	64 \| moderate	15.56 \| fine	70.295 \| fine	11.323 \| good	0.372 \| good	5.933 \| good	0.398 \| good
2025-12-06T22:00:00.000Z	58 \| moderate	13.042 \| fine	58.092 \| fine	12.211 \| good	0.377 \| good	6.14 \| good	0.395 \| good
2025-12-06T23:00:00.000Z	60 \| moderate	13.757 \| fine	62.469 \| fine	12.202 \| good	0.369 \| good	6.506 \| good	0.476 \| good
2025-12-07T00:00:00.000Z	60 \| moderate	14.147 \| fine	62.918 \| fine	11.216 \| good	0.355 \| good	7.537 \| good	0.478 \| good
2025-12-07T01:00:00.000Z	60 \| moderate	14.329 \| fine	65.09 \| fine	12.065 \| good	0.351 \| good	7.179 \| good	0.391 \| good
2025-12-07T02:00:00.000Z	64 \| moderate	15.794 \| fine	70.677 \| fine	10.144 \| good	0.263 \| good	8.87 \| good	0.484 \| good
2025-12-07T03:00:00.000Z	66 \| moderate	17.139 \| fine	76.699 \| fine	9.224 \| good	0.338 \| good	9.989 \| good	0.482 \| good
2025-12-07T04:00:00.000Z	66 \| moderate	16.51 \| fine	72.704 \| fine	8.263 \| good	0.332 \| good	10.585 \| good	0.491 \| good
2025-12-07T05:00:00.000Z	66 \| moderate	17.116 \| fine	76.186 \| fine	8.188 \| good	0.338 \| good	10.859 \| good	0.493 \| good
2025-12-07T06:00:00.000Z	67 \| moderate	17.713 \| fine	77.897 \| fine	8.144 \| good	0.338 \| good	9.596 \| good	0.497 \| good
2025-12-07T07:00:00.000Z	67 \| moderate	18.15 \| fine	79.649 \| fine	9.002 \| good	0.338 \| good	9.181 \| good	0.49 \| good
2025-12-07T08:00:00.000Z	69 \| moderate	18.744 \| fine	83.04 \| fine	9.091 \| good	0.257 \| good	7.975 \| good	0.408 \| good
2025-12-07T09:00:00.000Z	69 \| moderate	18.744 \| fine	83.04 \| fine	8.992 \| good	0.257 \| good	7.975 \| good	0.398 \| good
2025-12-07T10:00:00.000Z	69 \| moderate	18.744 \| fine	83.04 \| fine	9.043 \| good	0.486 \| good	5.83 \| good	0.25 \| good
2025-12-07T11:00:00.000Z	62 \| moderate	15.234 \| fine	71.969 \| fine	9.071 \| good	0.514 \| good	6.013 \| good	0.249 \| good
2025-12-07T12:00:00.000Z	64 \| moderate	15.982 \| fine	23.957 \| good	7.18 \| good	0.361 \| good	6.264 \| good	0.224 \| good
2025-12-07T13:00:00.000Z	44 \| good	8.443 \| good	37.324 \| good	11.745 \| good	0.254 \| good	4.707 \| good	0.299 \| good
2025-12-07T14:00:00.000Z	44 \| good	7.511 \| good	33.941 \| good	12.609 \| good	0.271 \| good	4.621 \| good	0.32 \| good
2025-12-07T15:00:00.000Z	44 \| good	7.605 \| good	34.276 \| good	12.45 \| good	0.344 \| good	4.702 \| good	0.304 \| good
2025-12-07T16:00:00.000Z	44 \| good	7.775 \| good	34.997 \| good	13.258 \| good	0.257 \| good	4.845 \| good	0.3 \| good
2025-12-07T17:00:00.000Z	49 \| good	9.085 \| good	40.344 \| good	13.207 \| good	0.26 \| good	4.441 \| good	0.308 \| good
2025-12-07T18:00:00.000Z	44 \| good	8.336 \| good	37.166 \| good	13.379 \| good	0.264 \| good	4.365 \| good	0.311 \| good
2025-12-07T19:00:00.000Z	49 \| good	9.175 \| good	40.436 \| good	14.412 \| good	0.358 \| good	4.424 \| good	0.401 \| good
2025-12-07T20:00:00.000Z	54 \| moderate	11.488 \| good	50.637 \| good	13.691 \| good	0.275 \| good	4.612 \| good	0.394 \| good
2025-12-07T21:00:00.000Z	62 \| moderate	14.787 \| fine	66.481 \| fine	13.812 \| good	0.282 \| good	4.517 \| good	0.388 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	16.972 \| fine	75.208 \| fine	13.879 \| good	0.358 \| good	5.2 \| good	0.391 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	16.972 \| fine	75.208 \| fine	13.879 \| good	0.358 \| good	5.2 \| good	0.391 \| good
2025-12-07T23:00:00.000Z	67 \| moderate	17.537 \| fine	78.206 \| fine	14.515 \| good	3.205 \| good	17.859 \| good	0.253 \| good
2025-12-08T00:00:00.000Z	66 \| moderate	17.08 \| fine	76.381 \| fine	12.742 \| good	3.252 \| good	19.848 \| good	0.251 \| good
2025-12-08T01:00:00.000Z	69 \| moderate	19.258 \| fine	85.118 \| fine	7.151 \| good	3.319 \| good	22.388 \| good	0.325 \| good
2025-12-08T02:00:00.000Z	73 \| moderate	20.717 \| fine	91.314 \| fine	4.269 \| good	3.386 \| good	24.929 \| good	0.4 \| good
2025-12-08T03:00:00.000Z	69 \| moderate	19.18 \| fine	84.301 \| fine	4.066 \| good	3.452 \| good	27.469 \| good	0.474 \| good
2025-12-08T04:00:00.000Z	75 \| moderate	21.657 \| fine	94.874 \| fine	4.387 \| good	3.63 \| good	26.926 \| good	0.505 \| good
2025-12-08T05:00:00.000Z	71 \| moderate	20.293 \| fine	89.431 \| fine	3.36 \| good	3.809 \| good	26.384 \| good	0.535 \| good
2025-12-08T06:00:00.000Z	67 \| moderate	18.219 \| fine	80.702 \| fine	3.167 \| good	3.987 \| good	25.841 \| good	0.566 \| good
2025-12-08T07:00:00.000Z	71 \| moderate	19.907 \| fine	87.538 \| fine	2.852 \| good	3.818 \| good	25.489 \| good	0.538 \| good
2025-12-08T08:00:00.000Z	60 \| moderate	13.862 \| fine	62.132 \| fine	3.966 \| good	3.65 \| good	25.136 \| good	0.51 \| good
2025-12-08T09:00:00.000Z	56 \| moderate	11.538 \| good	51.027 \| good	3.686 \| good	3.481 \| good	24.784 \| good	0.483 \| good
2025-12-08T10:00:00.000Z	49 \| good	9.222 \| good	40.739 \| good	4.123 \| good	3.149 \| good	23.681 \| good	0.46 \| good
2025-12-08T11:00:00.000Z	44 \| good	8.252 \| good	36.646 \| good	4.32 \| good	2.817 \| good	22.579 \| good	0.438 \| good
2025-12-08T12:00:00.000Z	49 \| good	8.721 \| good	38.125 \| good	5.815 \| good	2.486 \| good	21.477 \| good	0.416 \| good
2025-12-08T13:00:00.000Z	56 \| moderate	12.193 \| fine	54.603 \| good	6.702 \| good	2.424 \| good	20.916 \| good	0.418 \| good
2025-12-08T14:00:00.000Z	44 \| good	8.172 \| good	35.887 \| good	6.772 \| good	2.363 \| good	20.355 \| good	0.419 \| good
2025-12-08T15:00:00.000Z	33 \| good	6.24 \| good	27.143 \| good	9.848 \| good	2.302 \| good	19.794 \| good	0.421 \| good
2025-12-08T16:00:00.000Z	22 \| good	4.387 \| good	19.436 \| good	11.444 \| good	2.583 \| good	18.744 \| good	0.404 \| good
2025-12-08T17:00:00.000Z	33 \| good	6.035 \| good	26.909 \| good	10.401 \| good	2.865 \| good	17.694 \| good	0.386 \| good
2025-12-08T18:00:00.000Z	27 \| good	4.765 \| good	20.744 \| good	12.342 \| good	3.147 \| good	16.644 \| good	0.369 \| good
2025-12-08T19:00:00.000Z	14 \| good	2.332 \| good	9.678 \| good	13.596 \| good	3.037 \| good	14.542 \| good	0.317 \| good
2025-12-08T20:00:00.000Z	16 \| good	3.008 \| good	12.513 \| good	14.488 \| good	2.928 \| good	12.44 \| good	0.265 \| good
2025-12-08T21:00:00.000Z	33 \| good	5.659 \| good	24.384 \| good	17.201 \| good	2.818 \| good	10.338 \| good	0.213 \| good
2025-12-08T22:00:00.000Z	44 \| good	7.978 \| good	34.974 \| good	16.008 \| good	2.788 \| good	11.684 \| good	0.215 \| good
2025-12-08T23:00:00.000Z	44 \| good	7.83 \| good	34.669 \| good	12.749 \| good	2.757 \| good	13.03 \| good	0.217 \| good
2025-12-09T00:00:00.000Z	44 \| good	8.161 \| good	35.976 \| good	12.84 \| good	2.727 \| good	14.376 \| good	0.218 \| good
2025-12-09T01:00:00.000Z	54 \| moderate	10.898 \| good	48.379 \| good	6.75 \| good	2.743 \| good	18.548 \| good	0.289 \| good
2025-12-09T02:00:00.000Z	52 \| moderate	10.433 \| good	46.582 \| good	4.893 \| good	2.76 \| good	22.72 \| good	0.359 \| good
2025-12-09T03:00:00.000Z	54 \| moderate	11.14 \| good	49.658 \| good	2.787 \| good	2.777 \| good	26.893 \| good	0.429 \| good
2025-12-09T04:00:00.000Z	58 \| moderate	13.009 \| fine	58.411 \| fine	2.821 \| good	2.884 \| good	25.991 \| good	0.456 \| good
2025-12-09T05:00:00.000Z	58 \| moderate	12.514 \| fine	56.695 \| fine	3.207 \| good	2.99 \| good	25.089 \| good	0.482 \| good
2025-12-09T06:00:00.000Z	54 \| moderate	11.271 \| good	49.96 \| good	2.972 \| good	3.097 \| good	24.188 \| good	0.509 \| good
2025-12-09T07:00:00.000Z	54 \| moderate	11.112 \| good	49.296 \| good	2.873 \| good	2.97 \| good	23.491 \| good	0.512 \| good
2025-12-09T08:00:00.000Z	38 \| good	7.223 \| good	31.556 \| good	3.084 \| good	2.844 \| good	22.794 \| good	0.514 \| good
2025-12-09T09:00:00.000Z	38 \| good	7.333 \| good	32.414 \| good	4.309 \| good	2.717 \| good	22.098 \| good	0.517 \| good
2025-12-09T10:00:00.000Z	38 \| good	7.289 \| good	32.584 \| good	7.908 \| good	2.584 \| good	21.591 \| good	0.494 \| good
2025-12-09T11:00:00.000Z	44 \| good	7.87 \| good	34.773 \| good	5.507 \| good	2.45 \| good	21.083 \| good	0.47 \| good
2025-12-09T12:00:00.000Z	52 \| moderate	9.798 \| good	43.848 \| good	2.496 \| good	2.317 \| good	20.576 \| good	0.447 \| good
2025-12-09T13:00:00.000Z	58 \| moderate	13.051 \| fine	58.799 \| fine	2.196 \| good	2.435 \| good	20.913 \| good	0.435 \| good
2025-12-09T14:00:00.000Z	56 \| moderate	11.792 \| good	52.331 \| good	3.434 \| good	2.553 \| good	21.25 \| good	0.424 \| good
2025-12-09T15:00:00.000Z	49 \| good	8.838 \| good	39.432 \| good	5.429 \| good	2.67 \| good	21.587 \| good	0.412 \| good
2025-12-09T16:00:00.000Z	49 \| good	8.87 \| good	39.182 \| good	5.765 \| good	2.652 \| good	20.144 \| good	0.411 \| good
2025-12-09T17:00:00.000Z	56 \| moderate	12.238 \| fine	54.415 \| good	4.094 \| good	2.633 \| good	18.701 \| good	0.41 \| good
2025-12-09T18:00:00.000Z	60 \| moderate	14.291 \| fine	64.086 \| fine	5.55 \| good	2.615 \| good	17.258 \| good	0.409 \| good
2025-12-09T19:00:00.000Z	56 \| moderate	11.845 \| good	52.578 \| good	8.444 \| good	2.717 \| good	15.598 \| good	0.343 \| good
2025-12-09T20:00:00.000Z	54 \| moderate	10.899 \| good	47.865 \| good	9.97 \| good	2.818 \| good	13.938 \| good	0.277 \| good
2025-12-09T21:00:00.000Z	58 \| moderate	12.953 \| fine	58.025 \| fine	9.616 \| good	2.92 \| good	12.278 \| good	0.21 \| good
2025-12-09T22:00:00.000Z	64 \| moderate	15.945 \| fine	71.523 \| fine	7.32 \| good	2.839 \| good	13.422 \| good	0.206 \| good

Walnut Creek

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Walnut Creek, California

0.38ppm

How accurate is California, USA air quality data?

The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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

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Frequently asked questions

How frequently does the air quality data for Walnut Creek, California get updated?

Air quality updates for Walnut Creek, California are available every hour.

What time in the past 24 hours saw the poorest air quality in Walnut Creek, California?

Walnut Creek, California experienced its worst air quality at 10:00:00, 2025-12-07.

When was air quality in Walnut Creek, California the best over the past 24 hours?

The best air quality in Walnut Creek, California was observed at 06:00:00 on 2025-12-07.

What is the air quality in Walnut Creek, California right now?

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

What pollutant is most frequently found in Walnut Creek, California?

In Walnut Creek, California, PM2.5 is the most frequently found pollutant.

What can I do if the air quality in Walnut Creek, California is poor?

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

What is the PM_2.5 concentration in Walnut Creek, California right now?

Walnut Creek, California currently has a PM_2.5 concentration of 16.972 μg/m³.

What is the current level of PM₁₀ in Walnut Creek, California?

Walnut Creek, California currently has a PM₁₀ concentration of 75.208 μg/m³.

What is the current level of carbon monoxide (CO) in Walnut Creek, California?

The current carbon monoxide (CO) level in Walnut Creek, California is 0.391 ppm.

What is the current level of sulfur dioxide (SO₂) in Walnut Creek, California?

The current sulfur dioxide (SO₂) concentration in Walnut Creek, California is 0.358 ppb.

What is the current level of ozone (O₃) in Walnut Creek, California?

Walnut Creek, California currently has an ozone (O₃) concentration of 13.879 ppm.

What is the current level of nitrogen dioxide (NO₂) in Walnut Creek, California?

The current level of nitrogen dioxide (NO₂) in Walnut Creek, California is 5.2 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T23:00:00.000Z	54 \| moderate	11.055 \| good	49.599 \| good	14.79 \| good	0.366 \| good	7.359 \| good	0.385 \| good
2025-12-06T00:00:00.000Z	60 \| moderate	14.375 \| fine	64.592 \| fine	14.081 \| good	0.44 \| good	8.143 \| good	0.381 \| good
2025-12-06T01:00:00.000Z	60 \| moderate	13.743 \| fine	62.117 \| fine	13.163 \| good	0.351 \| good	9.397 \| good	0.378 \| good
2025-12-06T02:00:00.000Z	58 \| moderate	12.703 \| fine	56.725 \| fine	10.509 \| good	0.344 \| good	11.66 \| good	0.468 \| good
2025-12-06T03:00:00.000Z	60 \| moderate	13.89 \| fine	62.113 \| fine	7.761 \| good	0.252 \| good	14.017 \| good	0.472 \| good
2025-12-06T04:00:00.000Z	62 \| moderate	15.284 \| fine	68.972 \| fine	6.659 \| good	0.345 \| good	15.104 \| good	0.486 \| good
2025-12-06T05:00:00.000Z	66 \| moderate	16.889 \| fine	74.389 \| fine	5.708 \| good	0.34 \| good	15.274 \| good	0.481 \| good
2025-12-06T06:00:00.000Z	67 \| moderate	18.352 \| fine	80.596 \| fine	4.866 \| good	0.351 \| good	15.629 \| good	0.572 \| good
2025-12-06T07:00:00.000Z	66 \| moderate	17.49 \| fine	77.067 \| fine	5.603 \| good	0.437 \| good	14.099 \| good	0.478 \| good
2025-12-06T08:00:00.000Z	66 \| moderate	16.991 \| fine	75.137 \| fine	6.732 \| good	0.339 \| good	12.917 \| good	0.47 \| good
2025-12-06T09:00:00.000Z	66 \| moderate	16.991 \| fine	75.137 \| fine	6.737 \| good	0.339 \| good	12.917 \| good	0.464 \| good
2025-12-06T10:00:00.000Z	66 \| moderate	16.991 \| fine	75.137 \| fine	6.715 \| good	0.927 \| good	8.996 \| good	0.407 \| good
2025-12-06T11:00:00.000Z	54 \| moderate	10.896 \| good	55.592 \| fine	6.962 \| good	0.862 \| good	9.163 \| good	0.367 \| good
2025-12-06T12:00:00.000Z	60 \| moderate	14.408 \| fine	54.375 \| good	4.385 \| good	0.37 \| good	6.828 \| good	0.353 \| good
2025-12-06T13:00:00.000Z	54 \| moderate	11.333 \| good	50.818 \| good	14.09 \| good	0.249 \| good	5.06 \| good	0.299 \| good
2025-12-06T14:00:00.000Z	54 \| moderate	10.89 \| good	48.995 \| good	13.266 \| good	0.279 \| good	5.205 \| good	0.288 \| good
2025-12-06T15:00:00.000Z	64 \| moderate	16.072 \| fine	72.416 \| fine	10.693 \| good	0.255 \| good	6.813 \| good	0.381 \| good
2025-12-06T16:00:00.000Z	71 \| moderate	19.939 \| fine	87.58 \| fine	10.875 \| good	0.254 \| good	6.576 \| good	0.388 \| good
2025-12-06T17:00:00.000Z	67 \| moderate	17.546 \| fine	78.599 \| fine	11.869 \| good	0.266 \| good	6.386 \| good	0.383 \| good
2025-12-06T18:00:00.000Z	64 \| moderate	16.264 \| fine	72.898 \| fine	11.808 \| good	0.286 \| good	6.554 \| good	0.391 \| good
2025-12-06T19:00:00.000Z	67 \| moderate	17.733 \| fine	79.361 \| fine	11.949 \| good	0.28 \| good	5.985 \| good	0.483 \| good
2025-12-06T20:00:00.000Z	64 \| moderate	16.37 \| fine	72.568 \| fine	11.224 \| good	0.281 \| good	6.089 \| good	0.395 \| good
2025-12-06T21:00:00.000Z	64 \| moderate	15.56 \| fine	70.295 \| fine	11.323 \| good	0.372 \| good	5.933 \| good	0.398 \| good
2025-12-06T22:00:00.000Z	58 \| moderate	13.042 \| fine	58.092 \| fine	12.211 \| good	0.377 \| good	6.14 \| good	0.395 \| good
2025-12-06T23:00:00.000Z	60 \| moderate	13.757 \| fine	62.469 \| fine	12.202 \| good	0.369 \| good	6.506 \| good	0.476 \| good
2025-12-07T00:00:00.000Z	60 \| moderate	14.147 \| fine	62.918 \| fine	11.216 \| good	0.355 \| good	7.537 \| good	0.478 \| good
2025-12-07T01:00:00.000Z	60 \| moderate	14.329 \| fine	65.09 \| fine	12.065 \| good	0.351 \| good	7.179 \| good	0.391 \| good
2025-12-07T02:00:00.000Z	64 \| moderate	15.794 \| fine	70.677 \| fine	10.144 \| good	0.263 \| good	8.87 \| good	0.484 \| good
2025-12-07T03:00:00.000Z	66 \| moderate	17.139 \| fine	76.699 \| fine	9.224 \| good	0.338 \| good	9.989 \| good	0.482 \| good
2025-12-07T04:00:00.000Z	66 \| moderate	16.51 \| fine	72.704 \| fine	8.263 \| good	0.332 \| good	10.585 \| good	0.491 \| good
2025-12-07T05:00:00.000Z	66 \| moderate	17.116 \| fine	76.186 \| fine	8.188 \| good	0.338 \| good	10.859 \| good	0.493 \| good
2025-12-07T06:00:00.000Z	67 \| moderate	17.713 \| fine	77.897 \| fine	8.144 \| good	0.338 \| good	9.596 \| good	0.497 \| good
2025-12-07T07:00:00.000Z	67 \| moderate	18.15 \| fine	79.649 \| fine	9.002 \| good	0.338 \| good	9.181 \| good	0.49 \| good
2025-12-07T08:00:00.000Z	69 \| moderate	18.744 \| fine	83.04 \| fine	9.091 \| good	0.257 \| good	7.975 \| good	0.408 \| good
2025-12-07T09:00:00.000Z	69 \| moderate	18.744 \| fine	83.04 \| fine	8.992 \| good	0.257 \| good	7.975 \| good	0.398 \| good
2025-12-07T10:00:00.000Z	69 \| moderate	18.744 \| fine	83.04 \| fine	9.043 \| good	0.486 \| good	5.83 \| good	0.25 \| good
2025-12-07T11:00:00.000Z	62 \| moderate	15.234 \| fine	71.969 \| fine	9.071 \| good	0.514 \| good	6.013 \| good	0.249 \| good
2025-12-07T12:00:00.000Z	64 \| moderate	15.982 \| fine	23.957 \| good	7.18 \| good	0.361 \| good	6.264 \| good	0.224 \| good
2025-12-07T13:00:00.000Z	44 \| good	8.443 \| good	37.324 \| good	11.745 \| good	0.254 \| good	4.707 \| good	0.299 \| good
2025-12-07T14:00:00.000Z	44 \| good	7.511 \| good	33.941 \| good	12.609 \| good	0.271 \| good	4.621 \| good	0.32 \| good
2025-12-07T15:00:00.000Z	44 \| good	7.605 \| good	34.276 \| good	12.45 \| good	0.344 \| good	4.702 \| good	0.304 \| good
2025-12-07T16:00:00.000Z	44 \| good	7.775 \| good	34.997 \| good	13.258 \| good	0.257 \| good	4.845 \| good	0.3 \| good
2025-12-07T17:00:00.000Z	49 \| good	9.085 \| good	40.344 \| good	13.207 \| good	0.26 \| good	4.441 \| good	0.308 \| good
2025-12-07T18:00:00.000Z	44 \| good	8.336 \| good	37.166 \| good	13.379 \| good	0.264 \| good	4.365 \| good	0.311 \| good
2025-12-07T19:00:00.000Z	49 \| good	9.175 \| good	40.436 \| good	14.412 \| good	0.358 \| good	4.424 \| good	0.401 \| good
2025-12-07T20:00:00.000Z	54 \| moderate	11.488 \| good	50.637 \| good	13.691 \| good	0.275 \| good	4.612 \| good	0.394 \| good
2025-12-07T21:00:00.000Z	62 \| moderate	14.787 \| fine	66.481 \| fine	13.812 \| good	0.282 \| good	4.517 \| good	0.388 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	16.972 \| fine	75.208 \| fine	13.879 \| good	0.358 \| good	5.2 \| good	0.391 \| good
2025-12-07T22:00:00.000Z	66 \| moderate	16.972 \| fine	75.208 \| fine	13.879 \| good	0.358 \| good	5.2 \| good	0.391 \| good
2025-12-07T23:00:00.000Z	67 \| moderate	17.537 \| fine	78.206 \| fine	14.515 \| good	3.205 \| good	17.859 \| good	0.253 \| good
2025-12-08T00:00:00.000Z	66 \| moderate	17.08 \| fine	76.381 \| fine	12.742 \| good	3.252 \| good	19.848 \| good	0.251 \| good
2025-12-08T01:00:00.000Z	69 \| moderate	19.258 \| fine	85.118 \| fine	7.151 \| good	3.319 \| good	22.388 \| good	0.325 \| good
2025-12-08T02:00:00.000Z	73 \| moderate	20.717 \| fine	91.314 \| fine	4.269 \| good	3.386 \| good	24.929 \| good	0.4 \| good
2025-12-08T03:00:00.000Z	69 \| moderate	19.18 \| fine	84.301 \| fine	4.066 \| good	3.452 \| good	27.469 \| good	0.474 \| good
2025-12-08T04:00:00.000Z	75 \| moderate	21.657 \| fine	94.874 \| fine	4.387 \| good	3.63 \| good	26.926 \| good	0.505 \| good
2025-12-08T05:00:00.000Z	71 \| moderate	20.293 \| fine	89.431 \| fine	3.36 \| good	3.809 \| good	26.384 \| good	0.535 \| good
2025-12-08T06:00:00.000Z	67 \| moderate	18.219 \| fine	80.702 \| fine	3.167 \| good	3.987 \| good	25.841 \| good	0.566 \| good
2025-12-08T07:00:00.000Z	71 \| moderate	19.907 \| fine	87.538 \| fine	2.852 \| good	3.818 \| good	25.489 \| good	0.538 \| good
2025-12-08T08:00:00.000Z	60 \| moderate	13.862 \| fine	62.132 \| fine	3.966 \| good	3.65 \| good	25.136 \| good	0.51 \| good
2025-12-08T09:00:00.000Z	56 \| moderate	11.538 \| good	51.027 \| good	3.686 \| good	3.481 \| good	24.784 \| good	0.483 \| good
2025-12-08T10:00:00.000Z	49 \| good	9.222 \| good	40.739 \| good	4.123 \| good	3.149 \| good	23.681 \| good	0.46 \| good
2025-12-08T11:00:00.000Z	44 \| good	8.252 \| good	36.646 \| good	4.32 \| good	2.817 \| good	22.579 \| good	0.438 \| good
2025-12-08T12:00:00.000Z	49 \| good	8.721 \| good	38.125 \| good	5.815 \| good	2.486 \| good	21.477 \| good	0.416 \| good
2025-12-08T13:00:00.000Z	56 \| moderate	12.193 \| fine	54.603 \| good	6.702 \| good	2.424 \| good	20.916 \| good	0.418 \| good
2025-12-08T14:00:00.000Z	44 \| good	8.172 \| good	35.887 \| good	6.772 \| good	2.363 \| good	20.355 \| good	0.419 \| good
2025-12-08T15:00:00.000Z	33 \| good	6.24 \| good	27.143 \| good	9.848 \| good	2.302 \| good	19.794 \| good	0.421 \| good
2025-12-08T16:00:00.000Z	22 \| good	4.387 \| good	19.436 \| good	11.444 \| good	2.583 \| good	18.744 \| good	0.404 \| good
2025-12-08T17:00:00.000Z	33 \| good	6.035 \| good	26.909 \| good	10.401 \| good	2.865 \| good	17.694 \| good	0.386 \| good
2025-12-08T18:00:00.000Z	27 \| good	4.765 \| good	20.744 \| good	12.342 \| good	3.147 \| good	16.644 \| good	0.369 \| good
2025-12-08T19:00:00.000Z	14 \| good	2.332 \| good	9.678 \| good	13.596 \| good	3.037 \| good	14.542 \| good	0.317 \| good
2025-12-08T20:00:00.000Z	16 \| good	3.008 \| good	12.513 \| good	14.488 \| good	2.928 \| good	12.44 \| good	0.265 \| good
2025-12-08T21:00:00.000Z	33 \| good	5.659 \| good	24.384 \| good	17.201 \| good	2.818 \| good	10.338 \| good	0.213 \| good
2025-12-08T22:00:00.000Z	44 \| good	7.978 \| good	34.974 \| good	16.008 \| good	2.788 \| good	11.684 \| good	0.215 \| good
2025-12-08T23:00:00.000Z	44 \| good	7.83 \| good	34.669 \| good	12.749 \| good	2.757 \| good	13.03 \| good	0.217 \| good
2025-12-09T00:00:00.000Z	44 \| good	8.161 \| good	35.976 \| good	12.84 \| good	2.727 \| good	14.376 \| good	0.218 \| good
2025-12-09T01:00:00.000Z	54 \| moderate	10.898 \| good	48.379 \| good	6.75 \| good	2.743 \| good	18.548 \| good	0.289 \| good
2025-12-09T02:00:00.000Z	52 \| moderate	10.433 \| good	46.582 \| good	4.893 \| good	2.76 \| good	22.72 \| good	0.359 \| good
2025-12-09T03:00:00.000Z	54 \| moderate	11.14 \| good	49.658 \| good	2.787 \| good	2.777 \| good	26.893 \| good	0.429 \| good
2025-12-09T04:00:00.000Z	58 \| moderate	13.009 \| fine	58.411 \| fine	2.821 \| good	2.884 \| good	25.991 \| good	0.456 \| good
2025-12-09T05:00:00.000Z	58 \| moderate	12.514 \| fine	56.695 \| fine	3.207 \| good	2.99 \| good	25.089 \| good	0.482 \| good
2025-12-09T06:00:00.000Z	54 \| moderate	11.271 \| good	49.96 \| good	2.972 \| good	3.097 \| good	24.188 \| good	0.509 \| good
2025-12-09T07:00:00.000Z	54 \| moderate	11.112 \| good	49.296 \| good	2.873 \| good	2.97 \| good	23.491 \| good	0.512 \| good
2025-12-09T08:00:00.000Z	38 \| good	7.223 \| good	31.556 \| good	3.084 \| good	2.844 \| good	22.794 \| good	0.514 \| good
2025-12-09T09:00:00.000Z	38 \| good	7.333 \| good	32.414 \| good	4.309 \| good	2.717 \| good	22.098 \| good	0.517 \| good
2025-12-09T10:00:00.000Z	38 \| good	7.289 \| good	32.584 \| good	7.908 \| good	2.584 \| good	21.591 \| good	0.494 \| good
2025-12-09T11:00:00.000Z	44 \| good	7.87 \| good	34.773 \| good	5.507 \| good	2.45 \| good	21.083 \| good	0.47 \| good
2025-12-09T12:00:00.000Z	52 \| moderate	9.798 \| good	43.848 \| good	2.496 \| good	2.317 \| good	20.576 \| good	0.447 \| good
2025-12-09T13:00:00.000Z	58 \| moderate	13.051 \| fine	58.799 \| fine	2.196 \| good	2.435 \| good	20.913 \| good	0.435 \| good
2025-12-09T14:00:00.000Z	56 \| moderate	11.792 \| good	52.331 \| good	3.434 \| good	2.553 \| good	21.25 \| good	0.424 \| good
2025-12-09T15:00:00.000Z	49 \| good	8.838 \| good	39.432 \| good	5.429 \| good	2.67 \| good	21.587 \| good	0.412 \| good
2025-12-09T16:00:00.000Z	49 \| good	8.87 \| good	39.182 \| good	5.765 \| good	2.652 \| good	20.144 \| good	0.411 \| good
2025-12-09T17:00:00.000Z	56 \| moderate	12.238 \| fine	54.415 \| good	4.094 \| good	2.633 \| good	18.701 \| good	0.41 \| good
2025-12-09T18:00:00.000Z	60 \| moderate	14.291 \| fine	64.086 \| fine	5.55 \| good	2.615 \| good	17.258 \| good	0.409 \| good
2025-12-09T19:00:00.000Z	56 \| moderate	11.845 \| good	52.578 \| good	8.444 \| good	2.717 \| good	15.598 \| good	0.343 \| good
2025-12-09T20:00:00.000Z	54 \| moderate	10.899 \| good	47.865 \| good	9.97 \| good	2.818 \| good	13.938 \| good	0.277 \| good
2025-12-09T21:00:00.000Z	58 \| moderate	12.953 \| fine	58.025 \| fine	9.616 \| good	2.92 \| good	12.278 \| good	0.21 \| good
2025-12-09T22:00:00.000Z	64 \| moderate	15.945 \| fine	71.523 \| fine	7.32 \| good	2.839 \| good	13.422 \| good	0.206 \| good

Current air quality index in Walnut Creek, California today

Common air pollutants in Walnut Creek, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Walnut Creek, California

Air quality in nearby cities

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Frequently asked questions

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What is the air quality in Walnut Creek, California right now?

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What is the PM2.5 concentration in Walnut Creek, California right now?

What is the current level of PM10 in Walnut Creek, California?

What is the current level of carbon monoxide (CO) in Walnut Creek, California?

What is the current level of sulfur dioxide (SO2) in Walnut Creek, California?

What is the current level of ozone (O3) in Walnut Creek, California?

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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 Walnut Creek, California right now?

What is the current level of PM₁₀ in Walnut Creek, California?

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What is the current level of ozone (O₃) in Walnut Creek, California?

What is the current level of nitrogen dioxide (NO₂) in Walnut Creek, California?