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

Walnut Creek, California currently has a PM10 concentration of 10.863 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 0.679 ppb.

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

Walnut Creek, California currently has an ozone (O3) concentration of 46.944 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 1.54 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 2.669 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)

Good

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)

2.67 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

10.86 μg/m³

155

255

425

605+

Ozone (O₃)

46.94 ppb

201

201+

Sulfur Dioxide (SO₂)

0.68 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

1.54 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 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
2026-06-11T07:00:00.000Z	58 \| moderate	13.133 \| fine	58.164 \| fine	26.973 \| good	0.522 \| good	7.783 \| good	0.412 \| good
2026-06-11T08:00:00.000Z	60 \| moderate	13.995 \| fine	62.413 \| fine	24.183 \| good	0.573 \| good	8.99 \| good	0.463 \| good
2026-06-11T09:00:00.000Z	60 \| moderate	14.017 \| fine	62.655 \| fine	22.97 \| good	0.459 \| good	9.174 \| good	0.444 \| good
2026-06-11T10:00:00.000Z	58 \| moderate	13.42 \| fine	59.561 \| fine	21.355 \| good	0.709 \| good	8.057 \| good	0.444 \| good
2026-06-11T11:00:00.000Z	56 \| moderate	12.26 \| fine	54.787 \| good	20.996 \| good	0.423 \| good	6.926 \| good	0.434 \| good
2026-06-11T12:00:00.000Z	58 \| moderate	12.661 \| fine	56.74 \| fine	20.119 \| good	0.408 \| good	6.926 \| good	0.434 \| good
2026-06-11T13:00:00.000Z	56 \| moderate	11.874 \| good	53.395 \| good	17.746 \| good	0.503 \| good	6.41 \| good	0.415 \| good
2026-06-11T14:00:00.000Z	54 \| moderate	10.996 \| good	48.756 \| good	16.05 \| good	0.399 \| good	8.695 \| good	0.506 \| good
2026-06-11T15:00:00.000Z	54 \| moderate	10.848 \| good	48.09 \| good	13.733 \| good	0.514 \| good	11.772 \| good	0.644 \| good
2026-06-11T16:00:00.000Z	52 \| moderate	9.99 \| good	44.114 \| good	16.52 \| good	0.436 \| good	9.959 \| good	0.562 \| good
2026-06-11T17:00:00.000Z	54 \| moderate	10.958 \| good	48.938 \| good	20.714 \| good	0.576 \| good	11.89 \| good	0.6 \| good
2026-06-11T18:00:00.000Z	56 \| moderate	12.01 \| good	52.947 \| good	27.532 \| good	0.648 \| good	11.738 \| good	0.541 \| good
2026-06-11T19:00:00.000Z	54 \| moderate	11.283 \| good	50.336 \| good	33.612 \| good	0.584 \| good	8.169 \| good	0.408 \| good
2026-06-11T20:00:00.000Z	52 \| moderate	10.234 \| good	45.471 \| good	39.773 \| good	0.505 \| good	7.243 \| good	0.403 \| good
2026-06-11T21:00:00.000Z	52 \| moderate	9.611 \| good	42.662 \| good	43.091 \| good	0.551 \| good	5.045 \| good	0.343 \| good
2026-06-11T22:00:00.000Z	49 \| good	8.707 \| good	38.818 \| good	47.835 \| good	0.485 \| good	4.854 \| good	0.379 \| good
2026-06-11T23:00:00.000Z	52 \| moderate	10.138 \| good	44.724 \| good	49.557 \| good	0.446 \| good	4.542 \| good	0.362 \| good
2026-06-12T00:00:00.000Z	54 \| moderate	11.428 \| good	51.021 \| good	48.732 \| good	0.393 \| good	4.361 \| good	0.383 \| good
2026-06-12T01:00:00.000Z	56 \| moderate	11.666 \| good	52.092 \| good	49.324 \| good	0.572 \| good	3.856 \| good	0.347 \| good
2026-06-12T02:00:00.000Z	56 \| moderate	12.142 \| fine	54.59 \| good	47.08 \| good	0.594 \| good	3.315 \| good	0.347 \| good
2026-06-12T03:00:00.000Z	56 \| moderate	12.377 \| fine	55.041 \| fine	43.276 \| good	0.32 \| good	2.868 \| good	0.347 \| good
2026-06-12T04:00:00.000Z	54 \| moderate	11.022 \| good	49.372 \| good	40.404 \| good	0.478 \| good	3.239 \| good	0.363 \| good
2026-06-12T05:00:00.000Z	52 \| moderate	9.803 \| good	43.606 \| good	38.003 \| good	0.542 \| good	4.321 \| good	0.417 \| good
2026-06-12T06:00:00.000Z	44 \| good	8.093 \| good	36.224 \| good	36.222 \| good	0.507 \| good	4.254 \| good	0.383 \| good
2026-06-12T07:00:00.000Z	44 \| good	7.527 \| good	33.622 \| good	32.967 \| good	0.517 \| good	4.105 \| good	0.347 \| good
2026-06-12T08:00:00.000Z	33 \| good	6.163 \| good	27.68 \| good	33.382 \| good	0.397 \| good	2.502 \| good	0.347 \| good
2026-06-12T09:00:00.000Z	30 \| good	4.625 \| good	20.017 \| good	31.555 \| good	0.434 \| good	2.493 \| good	0.347 \| good
2026-06-12T10:00:00.000Z	26 \| good	4.231 \| good	18.585 \| good	27.996 \| good	0.372 \| good	3.304 \| good	0.347 \| good
2026-06-12T11:00:00.000Z	27 \| good	3.881 \| good	17.186 \| good	28.715 \| good	0.513 \| good	3.022 \| good	0.347 \| good
2026-06-12T12:00:00.000Z	26 \| good	3.612 \| good	16.117 \| good	27.78 \| good	0.601 \| good	3.276 \| good	0.347 \| good
2026-06-12T13:00:00.000Z	25 \| good	4.17 \| good	18.105 \| good	27.389 \| good	0.521 \| good	4.096 \| good	0.371 \| good
2026-06-12T14:00:00.000Z	25 \| good	4.08 \| good	18.059 \| good	26.816 \| good	0.309 \| good	5.014 \| good	0.364 \| good
2026-06-12T15:00:00.000Z	25 \| good	4.244 \| good	18.38 \| good	26.589 \| good	0.419 \| good	7.154 \| good	0.405 \| good
2026-06-12T16:00:00.000Z	27 \| good	4.999 \| good	22.185 \| good	26.071 \| good	0.447 \| good	7.362 \| good	0.444 \| good
2026-06-12T17:00:00.000Z	27 \| good	5.403 \| good	23.643 \| good	28.187 \| good	0.461 \| good	7.657 \| good	0.447 \| good
2026-06-12T18:00:00.000Z	33 \| good	5.595 \| good	25.015 \| good	30.385 \| good	0.391 \| good	8.728 \| good	0.446 \| good
2026-06-12T19:00:00.000Z	38 \| good	6.554 \| good	29.108 \| good	33.626 \| good	0.392 \| good	8.944 \| good	0.446 \| good
2026-06-12T20:00:00.000Z	38 \| good	7.414 \| good	32.893 \| good	34.61 \| good	1.136 \| good	8.641 \| good	0.446 \| good
2026-06-12T21:00:00.000Z	38 \| good	7.087 \| good	31.113 \| good	40.32 \| good	1.052 \| good	7.854 \| good	0.446 \| good
2026-06-12T22:00:00.000Z	38 \| good	6.714 \| good	29.811 \| good	39.664 \| good	0.361 \| good	5.714 \| good	0.425 \| good
2026-06-12T23:00:00.000Z	36 \| good	5.82 \| good	25.509 \| good	38.886 \| good	0.445 \| good	4.179 \| good	0.35 \| good
2026-06-13T00:00:00.000Z	36 \| good	4.998 \| good	22.158 \| good	39.234 \| good	0.46 \| good	3.302 \| good	0.364 \| good
2026-06-13T01:00:00.000Z	36 \| good	4.538 \| good	19.803 \| good	38.901 \| good	0.447 \| good	3.481 \| good	0.364 \| good
2026-06-13T02:00:00.000Z	35 \| good	3.856 \| good	17.183 \| good	37.968 \| good	0.421 \| good	3.702 \| good	0.4 \| good
2026-06-13T03:00:00.000Z	34 \| good	3.26 \| good	14.195 \| good	36.791 \| good	0.423 \| good	3.848 \| good	0.4 \| good
2026-06-13T04:00:00.000Z	34 \| good	3.3 \| good	14.105 \| good	37.034 \| good	0.477 \| good	3.96 \| good	0.349 \| good
2026-06-13T05:00:00.000Z	34 \| good	2.887 \| good	12.261 \| good	37.329 \| good	0.499 \| good	2.873 \| good	0.364 \| good
2026-06-13T06:00:00.000Z	32 \| good	2.383 \| good	10.33 \| good	35.149 \| good	0.468 \| good	2.96 \| good	0.4 \| good
2026-06-13T06:00:00.000Z	44 \| good	2.669 \| good	10.863 \| good	46.944 \| good	0.679 \| good	1.54 \| good	0.234 \| good
2026-06-13T07:00:00.000Z	49 \| good	9.397 \| good	41.997 \| good	26.706 \| good	0.752 \| good	7.317 \| good	0.116 \| good
2026-06-13T08:00:00.000Z	52 \| moderate	9.796 \| good	43.822 \| good	24.756 \| good	0.753 \| good	7.355 \| good	0.117 \| good
2026-06-13T09:00:00.000Z	44 \| good	8.381 \| good	37.031 \| good	23.617 \| good	0.762 \| good	7.037 \| good	0.117 \| good
2026-06-13T10:00:00.000Z	49 \| good	8.99 \| good	39.697 \| good	24.34 \| good	0.759 \| good	6.72 \| good	0.116 \| good
2026-06-13T11:00:00.000Z	49 \| good	8.858 \| good	39.281 \| good	23.942 \| good	0.753 \| good	6.553 \| good	0.116 \| good
2026-06-13T12:00:00.000Z	52 \| moderate	9.907 \| good	43.991 \| good	30.273 \| good	0.759 \| good	6.071 \| good	0.115 \| good
2026-06-13T13:00:00.000Z	52 \| moderate	9.583 \| good	42.367 \| good	26.943 \| good	0.774 \| good	5.391 \| good	0.114 \| good
2026-06-13T14:00:00.000Z	54 \| moderate	10.85 \| good	47.801 \| good	29.632 \| good	0.758 \| good	4.918 \| good	0.113 \| good
2026-06-13T15:00:00.000Z	56 \| moderate	12.469 \| fine	55.888 \| fine	32.446 \| good	0.786 \| good	4.305 \| good	0.112 \| good
2026-06-13T16:00:00.000Z	56 \| moderate	11.864 \| good	52.913 \| good	37.521 \| good	0.834 \| good	3.746 \| good	0.112 \| good
2026-06-13T17:00:00.000Z	56 \| moderate	11.877 \| good	53.011 \| good	43.321 \| good	0.889 \| good	3.232 \| good	0.111 \| good
2026-06-13T18:00:00.000Z	52 \| moderate	10.083 \| good	44.549 \| good	47.749 \| good	0.949 \| good	2.623 \| good	0.111 \| good
2026-06-13T19:00:00.000Z	49 \| good	9.465 \| good	42.387 \| good	49.901 \| good	0.984 \| good	1.931 \| good	0.109 \| good
2026-06-13T20:00:00.000Z	54 \| moderate	10.912 \| good	48.229 \| good	53.389 \| good	1.022 \| good	1.5 \| good	0.107 \| good
2026-06-13T21:00:00.000Z	61 \| moderate	11.271 \| good	49.906 \| good	57.976 \| fine	1.041 \| good	1.32 \| good	0.105 \| good
2026-06-13T22:00:00.000Z	67 \| moderate	10.774 \| good	47.88 \| good	60.305 \| fine	1.03 \| good	1.242 \| good	0.102 \| good
2026-06-13T23:00:00.000Z	64 \| moderate	10.038 \| good	44.499 \| good	59.315 \| fine	0.978 \| good	1.267 \| good	0.098 \| good
2026-06-14T00:00:00.000Z	52 \| moderate	9.508 \| good	42.217 \| good	51.897 \| good	0.913 \| good	1.416 \| good	0.095 \| good
2026-06-14T01:00:00.000Z	49 \| good	8.995 \| good	39.436 \| good	42.784 \| good	0.847 \| good	1.707 \| good	0.093 \| good
2026-06-14T02:00:00.000Z	49 \| good	8.79 \| good	38.549 \| good	36.196 \| good	0.797 \| good	2.308 \| good	0.092 \| good
2026-06-14T03:00:00.000Z	44 \| good	7.651 \| good	33.683 \| good	32.524 \| good	0.773 \| good	3.209 \| good	0.093 \| good
2026-06-14T04:00:00.000Z	44 \| good	8.02 \| good	35.116 \| good	30.2 \| good	0.75 \| good	4.078 \| good	0.094 \| good
2026-06-14T05:00:00.000Z	44 \| good	8.255 \| good	36.202 \| good	29.916 \| good	0.731 \| good	4.523 \| good	0.096 \| good
2026-06-14T06:00:00.000Z	44 \| good	8.028 \| good	35.167 \| good	27.489 \| good	0.737 \| good	4.767 \| good	0.097 \| good
2026-06-14T07:00:00.000Z	38 \| good	7.324 \| good	32.361 \| good	26.704 \| good	0.749 \| good	5.096 \| good	0.099 \| good
2026-06-14T08:00:00.000Z	44 \| good	7.834 \| good	34.514 \| good	26.843 \| good	0.757 \| good	5.042 \| good	0.099 \| good
2026-06-14T09:00:00.000Z	38 \| good	6.955 \| good	30.789 \| good	25.363 \| good	0.784 \| good	4.247 \| good	0.097 \| good
2026-06-14T10:00:00.000Z	38 \| good	7.179 \| good	31.69 \| good	23.684 \| good	0.778 \| good	3.772 \| good	0.095 \| good
2026-06-14T11:00:00.000Z	38 \| good	6.973 \| good	31.226 \| good	22.974 \| good	0.743 \| good	3.722 \| good	0.094 \| good
2026-06-14T12:00:00.000Z	44 \| good	7.555 \| good	33.271 \| good	27.593 \| good	0.72 \| good	3.704 \| good	0.093 \| good
2026-06-14T13:00:00.000Z	38 \| good	6.894 \| good	30.753 \| good	21.18 \| good	0.699 \| good	3.67 \| good	0.093 \| good
2026-06-14T14:00:00.000Z	38 \| good	7.063 \| good	31.232 \| good	23.504 \| good	0.709 \| good	3.428 \| good	0.092 \| good
2026-06-14T15:00:00.000Z	49 \| good	8.902 \| good	39.152 \| good	24.644 \| good	0.733 \| good	2.972 \| good	0.092 \| good
2026-06-14T16:00:00.000Z	44 \| good	8.48 \| good	37.372 \| good	29.166 \| good	0.761 \| good	2.674 \| good	0.092 \| good
2026-06-14T17:00:00.000Z	49 \| good	8.683 \| good	38.529 \| good	34.794 \| good	0.81 \| good	2.312 \| good	0.093 \| good
2026-06-14T18:00:00.000Z	49 \| good	8.669 \| good	38.287 \| good	40.771 \| good	0.854 \| good	1.856 \| good	0.093 \| good
2026-06-14T19:00:00.000Z	44 \| good	8.118 \| good	35.891 \| good	45.623 \| good	0.872 \| good	1.431 \| good	0.093 \| good
2026-06-14T20:00:00.000Z	49 \| good	9.243 \| good	41.395 \| good	49.425 \| good	0.861 \| good	1.148 \| good	0.093 \| good
2026-06-14T21:00:00.000Z	49 \| good	9.34 \| good	41.796 \| good	47.971 \| good	0.816 \| good	0.976 \| good	0.091 \| good
2026-06-14T22:00:00.000Z	44 \| good	7.07 \| good	31.251 \| good	47.777 \| good	0.773 \| good	0.914 \| good	0.089 \| good
2026-06-14T23:00:00.000Z	43 \| good	5.844 \| good	25.343 \| good	45.938 \| good	0.734 \| good	0.927 \| good	0.088 \| good
2026-06-15T00:00:00.000Z	37 \| good	5.67 \| good	24.928 \| good	40.329 \| good	0.701 \| good	1.029 \| good	0.087 \| good
2026-06-15T01:00:00.000Z	38 \| good	7.221 \| good	31.84 \| good	37.692 \| good	0.7 \| good	1.405 \| good	0.088 \| good
2026-06-15T02:00:00.000Z	44 \| good	8.122 \| good	35.734 \| good	33.558 \| good	0.701 \| good	2.033 \| good	0.09 \| good
2026-06-15T03:00:00.000Z	44 \| good	7.818 \| good	34.293 \| good	31.005 \| good	0.702 \| good	2.986 \| good	0.091 \| good
2026-06-15T04:00:00.000Z	44 \| good	8.199 \| good	36.161 \| good	28.035 \| good	0.704 \| good	3.944 \| good	0.093 \| good
2026-06-15T05:00:00.000Z	44 \| good	8.07 \| good	35.542 \| good	27.21 \| good	0.731 \| good	4.445 \| good	0.094 \| good
2026-06-15T06:00:00.000Z	58 \| moderate	13.409 \| fine	19.014 \| good	27.619 \| good	0.753 \| good	4.767 \| good	0.095 \| good

Walnut Creek

Empower business decisions with accurate air quality data

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

0.41ppm

How accurate is California, USA air quality data?

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

Source: Ambee Data Sources

Air quality levels in US

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

View Polluted Cities

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

View Clean Cities

Frequently asked questions

How frequently does the air quality data for 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 07:00:00, 2026-06-12.

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 03:00:00 on 2026-06-12.

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

The air quality in Walnut Creek, California right now is Good, with an AQI of 44.

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

In Walnut Creek, California, O3 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 2.669 μg/m³.

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

Walnut Creek, California currently has a PM₁₀ concentration of 10.863 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 0.234 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 0.679 ppb.

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

Walnut Creek, California currently has an ozone (O₃) concentration of 46.944 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 1.54 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-11T07:00:00.000Z	58 \| moderate	13.133 \| fine	58.164 \| fine	26.973 \| good	0.522 \| good	7.783 \| good	0.412 \| good
2026-06-11T08:00:00.000Z	60 \| moderate	13.995 \| fine	62.413 \| fine	24.183 \| good	0.573 \| good	8.99 \| good	0.463 \| good
2026-06-11T09:00:00.000Z	60 \| moderate	14.017 \| fine	62.655 \| fine	22.97 \| good	0.459 \| good	9.174 \| good	0.444 \| good
2026-06-11T10:00:00.000Z	58 \| moderate	13.42 \| fine	59.561 \| fine	21.355 \| good	0.709 \| good	8.057 \| good	0.444 \| good
2026-06-11T11:00:00.000Z	56 \| moderate	12.26 \| fine	54.787 \| good	20.996 \| good	0.423 \| good	6.926 \| good	0.434 \| good
2026-06-11T12:00:00.000Z	58 \| moderate	12.661 \| fine	56.74 \| fine	20.119 \| good	0.408 \| good	6.926 \| good	0.434 \| good
2026-06-11T13:00:00.000Z	56 \| moderate	11.874 \| good	53.395 \| good	17.746 \| good	0.503 \| good	6.41 \| good	0.415 \| good
2026-06-11T14:00:00.000Z	54 \| moderate	10.996 \| good	48.756 \| good	16.05 \| good	0.399 \| good	8.695 \| good	0.506 \| good
2026-06-11T15:00:00.000Z	54 \| moderate	10.848 \| good	48.09 \| good	13.733 \| good	0.514 \| good	11.772 \| good	0.644 \| good
2026-06-11T16:00:00.000Z	52 \| moderate	9.99 \| good	44.114 \| good	16.52 \| good	0.436 \| good	9.959 \| good	0.562 \| good
2026-06-11T17:00:00.000Z	54 \| moderate	10.958 \| good	48.938 \| good	20.714 \| good	0.576 \| good	11.89 \| good	0.6 \| good
2026-06-11T18:00:00.000Z	56 \| moderate	12.01 \| good	52.947 \| good	27.532 \| good	0.648 \| good	11.738 \| good	0.541 \| good
2026-06-11T19:00:00.000Z	54 \| moderate	11.283 \| good	50.336 \| good	33.612 \| good	0.584 \| good	8.169 \| good	0.408 \| good
2026-06-11T20:00:00.000Z	52 \| moderate	10.234 \| good	45.471 \| good	39.773 \| good	0.505 \| good	7.243 \| good	0.403 \| good
2026-06-11T21:00:00.000Z	52 \| moderate	9.611 \| good	42.662 \| good	43.091 \| good	0.551 \| good	5.045 \| good	0.343 \| good
2026-06-11T22:00:00.000Z	49 \| good	8.707 \| good	38.818 \| good	47.835 \| good	0.485 \| good	4.854 \| good	0.379 \| good
2026-06-11T23:00:00.000Z	52 \| moderate	10.138 \| good	44.724 \| good	49.557 \| good	0.446 \| good	4.542 \| good	0.362 \| good
2026-06-12T00:00:00.000Z	54 \| moderate	11.428 \| good	51.021 \| good	48.732 \| good	0.393 \| good	4.361 \| good	0.383 \| good
2026-06-12T01:00:00.000Z	56 \| moderate	11.666 \| good	52.092 \| good	49.324 \| good	0.572 \| good	3.856 \| good	0.347 \| good
2026-06-12T02:00:00.000Z	56 \| moderate	12.142 \| fine	54.59 \| good	47.08 \| good	0.594 \| good	3.315 \| good	0.347 \| good
2026-06-12T03:00:00.000Z	56 \| moderate	12.377 \| fine	55.041 \| fine	43.276 \| good	0.32 \| good	2.868 \| good	0.347 \| good
2026-06-12T04:00:00.000Z	54 \| moderate	11.022 \| good	49.372 \| good	40.404 \| good	0.478 \| good	3.239 \| good	0.363 \| good
2026-06-12T05:00:00.000Z	52 \| moderate	9.803 \| good	43.606 \| good	38.003 \| good	0.542 \| good	4.321 \| good	0.417 \| good
2026-06-12T06:00:00.000Z	44 \| good	8.093 \| good	36.224 \| good	36.222 \| good	0.507 \| good	4.254 \| good	0.383 \| good
2026-06-12T07:00:00.000Z	44 \| good	7.527 \| good	33.622 \| good	32.967 \| good	0.517 \| good	4.105 \| good	0.347 \| good
2026-06-12T08:00:00.000Z	33 \| good	6.163 \| good	27.68 \| good	33.382 \| good	0.397 \| good	2.502 \| good	0.347 \| good
2026-06-12T09:00:00.000Z	30 \| good	4.625 \| good	20.017 \| good	31.555 \| good	0.434 \| good	2.493 \| good	0.347 \| good
2026-06-12T10:00:00.000Z	26 \| good	4.231 \| good	18.585 \| good	27.996 \| good	0.372 \| good	3.304 \| good	0.347 \| good
2026-06-12T11:00:00.000Z	27 \| good	3.881 \| good	17.186 \| good	28.715 \| good	0.513 \| good	3.022 \| good	0.347 \| good
2026-06-12T12:00:00.000Z	26 \| good	3.612 \| good	16.117 \| good	27.78 \| good	0.601 \| good	3.276 \| good	0.347 \| good
2026-06-12T13:00:00.000Z	25 \| good	4.17 \| good	18.105 \| good	27.389 \| good	0.521 \| good	4.096 \| good	0.371 \| good
2026-06-12T14:00:00.000Z	25 \| good	4.08 \| good	18.059 \| good	26.816 \| good	0.309 \| good	5.014 \| good	0.364 \| good
2026-06-12T15:00:00.000Z	25 \| good	4.244 \| good	18.38 \| good	26.589 \| good	0.419 \| good	7.154 \| good	0.405 \| good
2026-06-12T16:00:00.000Z	27 \| good	4.999 \| good	22.185 \| good	26.071 \| good	0.447 \| good	7.362 \| good	0.444 \| good
2026-06-12T17:00:00.000Z	27 \| good	5.403 \| good	23.643 \| good	28.187 \| good	0.461 \| good	7.657 \| good	0.447 \| good
2026-06-12T18:00:00.000Z	33 \| good	5.595 \| good	25.015 \| good	30.385 \| good	0.391 \| good	8.728 \| good	0.446 \| good
2026-06-12T19:00:00.000Z	38 \| good	6.554 \| good	29.108 \| good	33.626 \| good	0.392 \| good	8.944 \| good	0.446 \| good
2026-06-12T20:00:00.000Z	38 \| good	7.414 \| good	32.893 \| good	34.61 \| good	1.136 \| good	8.641 \| good	0.446 \| good
2026-06-12T21:00:00.000Z	38 \| good	7.087 \| good	31.113 \| good	40.32 \| good	1.052 \| good	7.854 \| good	0.446 \| good
2026-06-12T22:00:00.000Z	38 \| good	6.714 \| good	29.811 \| good	39.664 \| good	0.361 \| good	5.714 \| good	0.425 \| good
2026-06-12T23:00:00.000Z	36 \| good	5.82 \| good	25.509 \| good	38.886 \| good	0.445 \| good	4.179 \| good	0.35 \| good
2026-06-13T00:00:00.000Z	36 \| good	4.998 \| good	22.158 \| good	39.234 \| good	0.46 \| good	3.302 \| good	0.364 \| good
2026-06-13T01:00:00.000Z	36 \| good	4.538 \| good	19.803 \| good	38.901 \| good	0.447 \| good	3.481 \| good	0.364 \| good
2026-06-13T02:00:00.000Z	35 \| good	3.856 \| good	17.183 \| good	37.968 \| good	0.421 \| good	3.702 \| good	0.4 \| good
2026-06-13T03:00:00.000Z	34 \| good	3.26 \| good	14.195 \| good	36.791 \| good	0.423 \| good	3.848 \| good	0.4 \| good
2026-06-13T04:00:00.000Z	34 \| good	3.3 \| good	14.105 \| good	37.034 \| good	0.477 \| good	3.96 \| good	0.349 \| good
2026-06-13T05:00:00.000Z	34 \| good	2.887 \| good	12.261 \| good	37.329 \| good	0.499 \| good	2.873 \| good	0.364 \| good
2026-06-13T06:00:00.000Z	32 \| good	2.383 \| good	10.33 \| good	35.149 \| good	0.468 \| good	2.96 \| good	0.4 \| good
2026-06-13T06:00:00.000Z	44 \| good	2.669 \| good	10.863 \| good	46.944 \| good	0.679 \| good	1.54 \| good	0.234 \| good
2026-06-13T07:00:00.000Z	49 \| good	9.397 \| good	41.997 \| good	26.706 \| good	0.752 \| good	7.317 \| good	0.116 \| good
2026-06-13T08:00:00.000Z	52 \| moderate	9.796 \| good	43.822 \| good	24.756 \| good	0.753 \| good	7.355 \| good	0.117 \| good
2026-06-13T09:00:00.000Z	44 \| good	8.381 \| good	37.031 \| good	23.617 \| good	0.762 \| good	7.037 \| good	0.117 \| good
2026-06-13T10:00:00.000Z	49 \| good	8.99 \| good	39.697 \| good	24.34 \| good	0.759 \| good	6.72 \| good	0.116 \| good
2026-06-13T11:00:00.000Z	49 \| good	8.858 \| good	39.281 \| good	23.942 \| good	0.753 \| good	6.553 \| good	0.116 \| good
2026-06-13T12:00:00.000Z	52 \| moderate	9.907 \| good	43.991 \| good	30.273 \| good	0.759 \| good	6.071 \| good	0.115 \| good
2026-06-13T13:00:00.000Z	52 \| moderate	9.583 \| good	42.367 \| good	26.943 \| good	0.774 \| good	5.391 \| good	0.114 \| good
2026-06-13T14:00:00.000Z	54 \| moderate	10.85 \| good	47.801 \| good	29.632 \| good	0.758 \| good	4.918 \| good	0.113 \| good
2026-06-13T15:00:00.000Z	56 \| moderate	12.469 \| fine	55.888 \| fine	32.446 \| good	0.786 \| good	4.305 \| good	0.112 \| good
2026-06-13T16:00:00.000Z	56 \| moderate	11.864 \| good	52.913 \| good	37.521 \| good	0.834 \| good	3.746 \| good	0.112 \| good
2026-06-13T17:00:00.000Z	56 \| moderate	11.877 \| good	53.011 \| good	43.321 \| good	0.889 \| good	3.232 \| good	0.111 \| good
2026-06-13T18:00:00.000Z	52 \| moderate	10.083 \| good	44.549 \| good	47.749 \| good	0.949 \| good	2.623 \| good	0.111 \| good
2026-06-13T19:00:00.000Z	49 \| good	9.465 \| good	42.387 \| good	49.901 \| good	0.984 \| good	1.931 \| good	0.109 \| good
2026-06-13T20:00:00.000Z	54 \| moderate	10.912 \| good	48.229 \| good	53.389 \| good	1.022 \| good	1.5 \| good	0.107 \| good
2026-06-13T21:00:00.000Z	61 \| moderate	11.271 \| good	49.906 \| good	57.976 \| fine	1.041 \| good	1.32 \| good	0.105 \| good
2026-06-13T22:00:00.000Z	67 \| moderate	10.774 \| good	47.88 \| good	60.305 \| fine	1.03 \| good	1.242 \| good	0.102 \| good
2026-06-13T23:00:00.000Z	64 \| moderate	10.038 \| good	44.499 \| good	59.315 \| fine	0.978 \| good	1.267 \| good	0.098 \| good
2026-06-14T00:00:00.000Z	52 \| moderate	9.508 \| good	42.217 \| good	51.897 \| good	0.913 \| good	1.416 \| good	0.095 \| good
2026-06-14T01:00:00.000Z	49 \| good	8.995 \| good	39.436 \| good	42.784 \| good	0.847 \| good	1.707 \| good	0.093 \| good
2026-06-14T02:00:00.000Z	49 \| good	8.79 \| good	38.549 \| good	36.196 \| good	0.797 \| good	2.308 \| good	0.092 \| good
2026-06-14T03:00:00.000Z	44 \| good	7.651 \| good	33.683 \| good	32.524 \| good	0.773 \| good	3.209 \| good	0.093 \| good
2026-06-14T04:00:00.000Z	44 \| good	8.02 \| good	35.116 \| good	30.2 \| good	0.75 \| good	4.078 \| good	0.094 \| good
2026-06-14T05:00:00.000Z	44 \| good	8.255 \| good	36.202 \| good	29.916 \| good	0.731 \| good	4.523 \| good	0.096 \| good
2026-06-14T06:00:00.000Z	44 \| good	8.028 \| good	35.167 \| good	27.489 \| good	0.737 \| good	4.767 \| good	0.097 \| good
2026-06-14T07:00:00.000Z	38 \| good	7.324 \| good	32.361 \| good	26.704 \| good	0.749 \| good	5.096 \| good	0.099 \| good
2026-06-14T08:00:00.000Z	44 \| good	7.834 \| good	34.514 \| good	26.843 \| good	0.757 \| good	5.042 \| good	0.099 \| good
2026-06-14T09:00:00.000Z	38 \| good	6.955 \| good	30.789 \| good	25.363 \| good	0.784 \| good	4.247 \| good	0.097 \| good
2026-06-14T10:00:00.000Z	38 \| good	7.179 \| good	31.69 \| good	23.684 \| good	0.778 \| good	3.772 \| good	0.095 \| good
2026-06-14T11:00:00.000Z	38 \| good	6.973 \| good	31.226 \| good	22.974 \| good	0.743 \| good	3.722 \| good	0.094 \| good
2026-06-14T12:00:00.000Z	44 \| good	7.555 \| good	33.271 \| good	27.593 \| good	0.72 \| good	3.704 \| good	0.093 \| good
2026-06-14T13:00:00.000Z	38 \| good	6.894 \| good	30.753 \| good	21.18 \| good	0.699 \| good	3.67 \| good	0.093 \| good
2026-06-14T14:00:00.000Z	38 \| good	7.063 \| good	31.232 \| good	23.504 \| good	0.709 \| good	3.428 \| good	0.092 \| good
2026-06-14T15:00:00.000Z	49 \| good	8.902 \| good	39.152 \| good	24.644 \| good	0.733 \| good	2.972 \| good	0.092 \| good
2026-06-14T16:00:00.000Z	44 \| good	8.48 \| good	37.372 \| good	29.166 \| good	0.761 \| good	2.674 \| good	0.092 \| good
2026-06-14T17:00:00.000Z	49 \| good	8.683 \| good	38.529 \| good	34.794 \| good	0.81 \| good	2.312 \| good	0.093 \| good
2026-06-14T18:00:00.000Z	49 \| good	8.669 \| good	38.287 \| good	40.771 \| good	0.854 \| good	1.856 \| good	0.093 \| good
2026-06-14T19:00:00.000Z	44 \| good	8.118 \| good	35.891 \| good	45.623 \| good	0.872 \| good	1.431 \| good	0.093 \| good
2026-06-14T20:00:00.000Z	49 \| good	9.243 \| good	41.395 \| good	49.425 \| good	0.861 \| good	1.148 \| good	0.093 \| good
2026-06-14T21:00:00.000Z	49 \| good	9.34 \| good	41.796 \| good	47.971 \| good	0.816 \| good	0.976 \| good	0.091 \| good
2026-06-14T22:00:00.000Z	44 \| good	7.07 \| good	31.251 \| good	47.777 \| good	0.773 \| good	0.914 \| good	0.089 \| good
2026-06-14T23:00:00.000Z	43 \| good	5.844 \| good	25.343 \| good	45.938 \| good	0.734 \| good	0.927 \| good	0.088 \| good
2026-06-15T00:00:00.000Z	37 \| good	5.67 \| good	24.928 \| good	40.329 \| good	0.701 \| good	1.029 \| good	0.087 \| good
2026-06-15T01:00:00.000Z	38 \| good	7.221 \| good	31.84 \| good	37.692 \| good	0.7 \| good	1.405 \| good	0.088 \| good
2026-06-15T02:00:00.000Z	44 \| good	8.122 \| good	35.734 \| good	33.558 \| good	0.701 \| good	2.033 \| good	0.09 \| good
2026-06-15T03:00:00.000Z	44 \| good	7.818 \| good	34.293 \| good	31.005 \| good	0.702 \| good	2.986 \| good	0.091 \| good
2026-06-15T04:00:00.000Z	44 \| good	8.199 \| good	36.161 \| good	28.035 \| good	0.704 \| good	3.944 \| good	0.093 \| good
2026-06-15T05:00:00.000Z	44 \| good	8.07 \| good	35.542 \| good	27.21 \| good	0.731 \| good	4.445 \| good	0.094 \| good
2026-06-15T06:00:00.000Z	58 \| moderate	13.409 \| fine	19.014 \| good	27.619 \| good	0.753 \| good	4.767 \| good	0.095 \| 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)

Track live Walnut Creek, California air quality forecast and history

Empower business decisions with accurate air quality data

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

Air quality in nearby cities

Pleasant Hill, California

Lafayette, California

Alamo, California

Concord, California

Moraga, California

Orinda, California

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

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

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

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

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?

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

What is the current level of PM₁₀ 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?

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