What is the current concentration of PM10 in Napa, California?

The current PM10 concentration at Napa, California is 28.513 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Napa, California?

The current sulfur dioxide (SO2) concentration at Napa, California is 0.293 ppb.

What is the current concentration of ozone (O3) in Napa, California?

The current ozone (O3) concentration at Napa, California is 20.62 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Napa, California?

The current nitrogen dioxide (NO2) concentration at Napa, California is 6.797 ppb.

Napa, California live air quality index now

Q: What is the current concentration of PM2.5 in Napa, California?

The current PM2.5 concentration at Napa, California is 10.229 μg/m3.

Stay updated with real-time air quality in Napa, 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

Napa, California

Last updated: ... (Local time)

Major air pollutants in Napa, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

10.23 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

28.51 μg/m³

155

255

425

605+

Ozone (O₃)

20.62 ppb

201

201+

Sulfur Dioxide (SO₂)

0.29 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.80 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.43 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Napa, California

Get Live Pollen Counts

Napa, California

Scroll To Air Quality Map

Track live Napa, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-06T04:00:00.000Z	66 \| moderate	16.579 \| fine	51.593 \| good	10.32 \| good	0.358 \| good	15.192 \| good	0.406 \| good
2025-12-06T05:00:00.000Z	69 \| moderate	18.58 \| fine	78.756 \| fine	12.247 \| good	0.442 \| good	15.649 \| good	0.426 \| good
2025-12-06T06:00:00.000Z	63 \| moderate	15.415 \| fine	79.367 \| fine	11.178 \| good	0.392 \| good	13.505 \| good	0.419 \| good
2025-12-06T07:00:00.000Z	73 \| moderate	21.303 \| fine	66.801 \| fine	14.314 \| good	0.415 \| good	13.346 \| good	0.419 \| good
2025-12-06T08:00:00.000Z	71 \| moderate	19.65 \| fine	72.346 \| fine	13.465 \| good	0.388 \| good	11.085 \| good	0.387 \| good
2025-12-06T09:00:00.000Z	75 \| moderate	21.644 \| fine	99.287 \| fine	14.505 \| good	0.409 \| good	8.85 \| good	0.297 \| good
2025-12-06T10:00:00.000Z	84 \| moderate	26.566 \| fine	100.363 \| fine	13.264 \| good	0.967 \| good	3.874 \| good	0.402 \| good
2025-12-06T11:00:00.000Z	64 \| moderate	15.919 \| fine	77.422 \| fine	15.399 \| good	0.882 \| good	3.612 \| good	0.367 \| good
2025-12-06T12:00:00.000Z	66 \| moderate	16.803 \| fine	71.92 \| fine	13.516 \| good	0.386 \| good	9.299 \| good	0.365 \| good
2025-12-06T13:00:00.000Z	54 \| moderate	10.963 \| good	26.715 \| good	11.69 \| good	0.407 \| good	7.156 \| good	0.314 \| good
2025-12-06T14:00:00.000Z	62 \| moderate	14.558 \| fine	68.063 \| fine	11.802 \| good	0.558 \| good	4.911 \| good	0.319 \| good
2025-12-06T15:00:00.000Z	49 \| good	9.068 \| good	49.833 \| good	11.23 \| good	0.474 \| good	4.314 \| good	0.365 \| good
2025-12-06T16:00:00.000Z	54 \| moderate	10.764 \| good	30.118 \| good	11.339 \| good	0.467 \| good	4.634 \| good	0.381 \| good
2025-12-06T17:00:00.000Z	49 \| good	9.168 \| good	43.575 \| good	9.807 \| good	0.531 \| good	7.712 \| good	0.353 \| good
2025-12-06T18:00:00.000Z	49 \| good	9.499 \| good	29.599 \| good	12.019 \| good	0.578 \| good	3.527 \| good	0.364 \| good
2025-12-06T19:00:00.000Z	38 \| good	6.629 \| good	14.259 \| good	13.233 \| good	0.572 \| good	3.694 \| good	0.394 \| good
2025-12-06T20:00:00.000Z	56 \| moderate	12.285 \| fine	49.922 \| good	13.419 \| good	0.576 \| good	3.732 \| good	0.414 \| good
2025-12-06T21:00:00.000Z	56 \| moderate	12.453 \| fine	24.725 \| good	13.872 \| good	0.58 \| good	3.119 \| good	0.379 \| good
2025-12-06T22:00:00.000Z	56 \| moderate	12.314 \| fine	40.548 \| good	13.643 \| good	0.564 \| good	2.886 \| good	0.414 \| good
2025-12-06T23:00:00.000Z	60 \| moderate	13.763 \| fine	66.792 \| fine	12.978 \| good	0.464 \| good	3.101 \| good	0.394 \| good
2025-12-07T00:00:00.000Z	62 \| moderate	15.215 \| fine	53.42 \| good	12.737 \| good	0.447 \| good	3.844 \| good	0.429 \| good
2025-12-07T01:00:00.000Z	62 \| moderate	15.435 \| fine	62.297 \| fine	12.767 \| good	0.401 \| good	3.96 \| good	0.38 \| good
2025-12-07T02:00:00.000Z	67 \| moderate	17.714 \| fine	59.578 \| fine	13.334 \| good	0.322 \| good	8.511 \| good	0.427 \| good
2025-12-07T03:00:00.000Z	73 \| moderate	21.271 \| fine	86.801 \| fine	12.305 \| good	0.318 \| good	10.012 \| good	0.443 \| good
2025-12-07T04:00:00.000Z	77 \| moderate	23.067 \| fine	85.87 \| fine	12.806 \| good	0.338 \| good	11.471 \| good	0.461 \| good
2025-12-07T05:00:00.000Z	62 \| moderate	15.3 \| fine	25.006 \| good	12.58 \| good	0.286 \| good	12.058 \| good	0.464 \| good
2025-12-07T06:00:00.000Z	60 \| moderate	13.634 \| fine	68.767 \| fine	11.399 \| good	0.284 \| good	10.33 \| good	0.448 \| good
2025-12-07T07:00:00.000Z	54 \| moderate	10.795 \| good	41.347 \| good	12.878 \| good	0.29 \| good	9.435 \| good	0.414 \| good
2025-12-07T08:00:00.000Z	54 \| moderate	10.506 \| good	42.343 \| good	12.281 \| good	0.29 \| good	8.176 \| good	0.446 \| good
2025-12-07T09:00:00.000Z	58 \| moderate	12.853 \| fine	50.212 \| good	11.839 \| good	0.344 \| good	7.998 \| good	0.363 \| good
2025-12-07T10:00:00.000Z	58 \| moderate	12.644 \| fine	38.62 \| good	11.425 \| good	0.461 \| good	3.692 \| good	0.242 \| good
2025-12-07T11:00:00.000Z	38 \| good	6.993 \| good	17.091 \| good	15.105 \| good	0.493 \| good	3.442 \| good	0.247 \| good
2025-12-07T12:00:00.000Z	64 \| moderate	16.134 \| fine	73.036 \| fine	7.307 \| good	0.365 \| good	3.337 \| good	0.207 \| good
2025-12-07T13:00:00.000Z	49 \| good	9.324 \| good	34.352 \| good	7.608 \| good	0.372 \| good	2.891 \| good	0.311 \| good
2025-12-07T14:00:00.000Z	33 \| good	6.063 \| good	23.619 \| good	12.467 \| good	0.428 \| good	3.087 \| good	0.379 \| good
2025-12-07T15:00:00.000Z	27 \| good	5.488 \| good	13.781 \| good	12.413 \| good	0.397 \| good	3.13 \| good	0.347 \| good
2025-12-07T16:00:00.000Z	44 \| good	7.691 \| good	28.896 \| good	7.715 \| good	0.352 \| good	3.545 \| good	0.347 \| good
2025-12-07T17:00:00.000Z	27 \| good	4.711 \| good	16.209 \| good	9.061 \| good	0.368 \| good	7.501 \| good	0.347 \| good
2025-12-07T18:00:00.000Z	27 \| good	4.634 \| good	8.032 \| good	10.511 \| good	0.383 \| good	3.68 \| good	0.398 \| good
2025-12-07T19:00:00.000Z	23 \| good	4.425 \| good	25.021 \| good	10.646 \| good	0.405 \| good	3.628 \| good	0.411 \| good
2025-12-07T20:00:00.000Z	24 \| good	3.751 \| good	25.65 \| good	12.784 \| good	0.386 \| good	3.595 \| good	0.395 \| good
2025-12-07T21:00:00.000Z	24 \| good	3.503 \| good	26.273 \| good	10.66 \| good	0.46 \| good	4.27 \| good	0.379 \| good
2025-12-07T22:00:00.000Z	52 \| moderate	9.754 \| good	44.507 \| good	10.148 \| good	0.391 \| good	3.185 \| good	0.363 \| good
2025-12-07T23:00:00.000Z	49 \| good	8.884 \| good	41.959 \| good	9.734 \| good	0.351 \| good	2.938 \| good	0.363 \| good
2025-12-08T00:00:00.000Z	46 \| good	7.757 \| good	49.986 \| good	11.165 \| good	0.416 \| good	4.206 \| good	0.363 \| good
2025-12-08T01:00:00.000Z	58 \| moderate	12.793 \| fine	62.007 \| fine	11.881 \| good	0.33 \| good	3.537 \| good	0.428 \| good
2025-12-08T02:00:00.000Z	52 \| moderate	10.229 \| good	28.513 \| good	20.62 \| good	0.293 \| good	6.797 \| good	0.431 \| good
2025-12-08T03:00:00.000Z	54 \| moderate	10.889 \| good	46.92 \| good	12.715 \| good	0.316 \| good	9.803 \| good	0.431 \| good
2025-12-08T03:00:00.000Z	52 \| moderate	10.229 \| good	28.513 \| good	20.62 \| good	0.293 \| good	6.797 \| good	0.431 \| good
2025-12-08T04:00:00.000Z	56 \| moderate	12.397 \| fine	56.535 \| fine	15.638 \| good	1.843 \| good	20.773 \| good	0.334 \| good
2025-12-08T05:00:00.000Z	56 \| moderate	12.465 \| fine	56.445 \| fine	13.984 \| good	1.939 \| good	21.035 \| good	0.349 \| good
2025-12-08T06:00:00.000Z	49 \| good	9.17 \| good	40.595 \| good	14.212 \| good	2.034 \| good	21.296 \| good	0.365 \| good
2025-12-08T07:00:00.000Z	38 \| good	6.817 \| good	30.472 \| good	13.424 \| good	1.799 \| good	19.977 \| good	0.363 \| good
2025-12-08T08:00:00.000Z	27 \| good	4.645 \| good	19.895 \| good	12.652 \| good	1.565 \| good	18.658 \| good	0.36 \| good
2025-12-08T09:00:00.000Z	22 \| good	3.91 \| good	16.828 \| good	13.114 \| good	1.331 \| good	17.339 \| good	0.358 \| good
2025-12-08T10:00:00.000Z	22 \| good	3.524 \| good	15.787 \| good	13.224 \| good	1.192 \| good	15.285 \| good	0.335 \| good
2025-12-08T11:00:00.000Z	13 \| good	2.223 \| good	9.096 \| good	13.918 \| good	1.053 \| good	13.232 \| good	0.311 \| good
2025-12-08T12:00:00.000Z	13 \| good	1.625 \| good	7.036 \| good	13.928 \| good	0.914 \| good	11.178 \| good	0.288 \| good
2025-12-08T13:00:00.000Z	12 \| good	1.041 \| good	4.12 \| good	13.383 \| good	0.893 \| good	10.948 \| good	0.29 \| good
2025-12-08T14:00:00.000Z	12 \| good	1.426 \| good	6.057 \| good	13.353 \| good	0.873 \| good	10.718 \| good	0.293 \| good
2025-12-08T15:00:00.000Z	13 \| good	1.879 \| good	7.9 \| good	13.84 \| good	0.852 \| good	10.487 \| good	0.295 \| good
2025-12-08T16:00:00.000Z	11 \| good	1.902 \| good	7.907 \| good	11.998 \| good	0.978 \| good	9.784 \| good	0.288 \| good
2025-12-08T17:00:00.000Z	11 \| good	1.435 \| good	6.03 \| good	12.229 \| good	1.105 \| good	9.081 \| good	0.281 \| good
2025-12-08T18:00:00.000Z	13 \| good	2.081 \| good	8.032 \| good	13.868 \| good	1.231 \| good	8.378 \| good	0.274 \| good
2025-12-08T19:00:00.000Z	16 \| good	2.681 \| good	10.949 \| good	14.961 \| good	1.22 \| good	6.858 \| good	0.24 \| good
2025-12-08T20:00:00.000Z	22 \| good	3.791 \| good	16.766 \| good	16.027 \| good	1.208 \| good	5.337 \| good	0.206 \| good
2025-12-08T21:00:00.000Z	33 \| good	5.779 \| good	24.892 \| good	15.419 \| good	1.196 \| good	3.816 \| good	0.173 \| good
2025-12-08T22:00:00.000Z	38 \| good	7.07 \| good	31.684 \| good	14.144 \| good	1.173 \| good	4.562 \| good	0.176 \| good
2025-12-08T23:00:00.000Z	49 \| good	8.702 \| good	37.918 \| good	13.03 \| good	1.15 \| good	5.308 \| good	0.18 \| good
2025-12-09T00:00:00.000Z	49 \| good	9.207 \| good	40.853 \| good	14.34 \| good	1.127 \| good	6.055 \| good	0.184 \| good
2025-12-09T01:00:00.000Z	54 \| moderate	10.964 \| good	48.839 \| good	12.502 \| good	1.218 \| good	10.84 \| good	0.228 \| good
2025-12-09T02:00:00.000Z	54 \| moderate	10.707 \| good	47.795 \| good	12.647 \| good	1.308 \| good	15.625 \| good	0.273 \| good
2025-12-09T03:00:00.000Z	54 \| moderate	10.827 \| good	47.838 \| good	13.18 \| good	1.399 \| good	20.41 \| good	0.317 \| good
2025-12-09T04:00:00.000Z	49 \| good	9.115 \| good	40.794 \| good	12.013 \| good	1.457 \| good	20.414 \| good	0.327 \| good
2025-12-09T05:00:00.000Z	49 \| good	8.543 \| good	37.766 \| good	11.298 \| good	1.516 \| good	20.418 \| good	0.337 \| good
2025-12-09T06:00:00.000Z	38 \| good	6.553 \| good	29.582 \| good	11.263 \| good	1.574 \| good	20.422 \| good	0.347 \| good
2025-12-09T07:00:00.000Z	33 \| good	6.04 \| good	26.649 \| good	9.658 \| good	1.471 \| good	19.451 \| good	0.344 \| good
2025-12-09T08:00:00.000Z	27 \| good	4.865 \| good	20.708 \| good	11.01 \| good	1.367 \| good	18.479 \| good	0.341 \| good
2025-12-09T09:00:00.000Z	22 \| good	4.303 \| good	18.624 \| good	12.222 \| good	1.264 \| good	17.508 \| good	0.338 \| good
2025-12-09T10:00:00.000Z	27 \| good	4.503 \| good	19.612 \| good	14.461 \| good	1.185 \| good	16.309 \| good	0.321 \| good
2025-12-09T11:00:00.000Z	16 \| good	3.428 \| good	14.831 \| good	15.614 \| good	1.105 \| good	15.11 \| good	0.303 \| good
2025-12-09T12:00:00.000Z	14 \| good	2.343 \| good	9.89 \| good	14.808 \| good	1.025 \| good	13.912 \| good	0.285 \| good
2025-12-09T13:00:00.000Z	14 \| good	1.302 \| good	5.044 \| good	14.95 \| good	1.059 \| good	13.839 \| good	0.282 \| good
2025-12-09T14:00:00.000Z	14 \| good	1.607 \| good	6.949 \| good	14.565 \| good	1.093 \| good	13.767 \| good	0.28 \| good
2025-12-09T15:00:00.000Z	13 \| good	1.568 \| good	6.082 \| good	14.387 \| good	1.127 \| good	13.695 \| good	0.277 \| good
2025-12-09T16:00:00.000Z	11 \| good	1.863 \| good	7.898 \| good	11.375 \| good	1.131 \| good	11.738 \| good	0.267 \| good
2025-12-09T17:00:00.000Z	11 \| good	2.007 \| good	7.963 \| good	11.379 \| good	1.135 \| good	9.781 \| good	0.258 \| good
2025-12-09T18:00:00.000Z	22 \| good	3.516 \| good	15.731 \| good	12.349 \| good	1.14 \| good	7.824 \| good	0.248 \| good
2025-12-09T19:00:00.000Z	16 \| good	2.943 \| good	11.895 \| good	13.679 \| good	1.193 \| good	6.645 \| good	0.218 \| good
2025-12-09T20:00:00.000Z	22 \| good	3.729 \| good	15.795 \| good	14.62 \| good	1.246 \| good	5.465 \| good	0.187 \| good
2025-12-09T21:00:00.000Z	27 \| good	4.962 \| good	21.82 \| good	14.916 \| good	1.299 \| good	4.285 \| good	0.157 \| good
2025-12-09T22:00:00.000Z	33 \| good	6.336 \| good	27.787 \| good	15.164 \| good	1.278 \| good	5.107 \| good	0.16 \| good
2025-12-09T23:00:00.000Z	44 \| good	7.623 \| good	33.75 \| good	14.591 \| good	1.256 \| good	5.928 \| good	0.164 \| good
2025-12-10T00:00:00.000Z	49 \| good	9.047 \| good	9.67 \| good	26.495 \| good	1.229 \| good	6.691 \| good	0.167 \| good
2025-12-10T01:00:00.000Z	49 \| good	8.946 \| good	40.558 \| good	13.069 \| good	1.364 \| good	11.817 \| good	0.218 \| good
2025-12-10T02:00:00.000Z	49 \| good	9.102 \| good	40.716 \| good	12.8 \| good	1.493 \| good	16.885 \| good	0.268 \| good
2025-12-10T03:00:00.000Z	49 \| good	8.519 \| good	36.882 \| good	13.206 \| good	1.623 \| good	21.953 \| good	0.319 \| good

Napa

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Napa, California air quality map: Track AQI near you

0.40ppm

How accurate is California, USA air quality data?

Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Napa, California updated?

The air quality for Napa, California is updated every hour.

When was the worst air quality at Napa, California in the last 24 hrs?

The worst air quality in Napa, California in the last 24 hours was observed at 04:00:00 on 2025-12-07.

When was the best air quality at Napa, California in the last 24 hrs?

In the last 24 hrs, the best air quality in Napa, California was observed at 07:00:00 on 2025-12-07.

What is the current air quality in Napa, California?

The current air quality in Napa, California is 52, categorized as Moderate based on real-time data.

What pollutant is the most common in Napa, California?

The most common pollutant in Napa, California is PM2.5.

What should I do if the air quality in Napa, California is poor?

If the air quality in Napa, California is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Napa, California?

The current PM_2.5 concentration at Napa, California is 10.229 μg/m³.

What is the current concentration of PM₁₀ in Napa, California?

The current PM₁₀ concentration at Napa, California is 28.513 μg/m³.

What is the current concentration of carbon monoxide (CO) in Napa, California?

The current carbon monoxide (CO) concentration at Napa, California is 0.431 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Napa, California?

The current sulfur dioxide (SO₂) concentration at Napa, California is 0.293 ppb.

What is the current concentration of ozone (O₃) in Napa, California?

The current ozone (O₃) concentration at Napa, California is 20.62 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Napa, California?

The current nitrogen dioxide (NO₂) concentration at Napa, California is 6.797 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-06T04:00:00.000Z	66 \| moderate	16.579 \| fine	51.593 \| good	10.32 \| good	0.358 \| good	15.192 \| good	0.406 \| good
2025-12-06T05:00:00.000Z	69 \| moderate	18.58 \| fine	78.756 \| fine	12.247 \| good	0.442 \| good	15.649 \| good	0.426 \| good
2025-12-06T06:00:00.000Z	63 \| moderate	15.415 \| fine	79.367 \| fine	11.178 \| good	0.392 \| good	13.505 \| good	0.419 \| good
2025-12-06T07:00:00.000Z	73 \| moderate	21.303 \| fine	66.801 \| fine	14.314 \| good	0.415 \| good	13.346 \| good	0.419 \| good
2025-12-06T08:00:00.000Z	71 \| moderate	19.65 \| fine	72.346 \| fine	13.465 \| good	0.388 \| good	11.085 \| good	0.387 \| good
2025-12-06T09:00:00.000Z	75 \| moderate	21.644 \| fine	99.287 \| fine	14.505 \| good	0.409 \| good	8.85 \| good	0.297 \| good
2025-12-06T10:00:00.000Z	84 \| moderate	26.566 \| fine	100.363 \| fine	13.264 \| good	0.967 \| good	3.874 \| good	0.402 \| good
2025-12-06T11:00:00.000Z	64 \| moderate	15.919 \| fine	77.422 \| fine	15.399 \| good	0.882 \| good	3.612 \| good	0.367 \| good
2025-12-06T12:00:00.000Z	66 \| moderate	16.803 \| fine	71.92 \| fine	13.516 \| good	0.386 \| good	9.299 \| good	0.365 \| good
2025-12-06T13:00:00.000Z	54 \| moderate	10.963 \| good	26.715 \| good	11.69 \| good	0.407 \| good	7.156 \| good	0.314 \| good
2025-12-06T14:00:00.000Z	62 \| moderate	14.558 \| fine	68.063 \| fine	11.802 \| good	0.558 \| good	4.911 \| good	0.319 \| good
2025-12-06T15:00:00.000Z	49 \| good	9.068 \| good	49.833 \| good	11.23 \| good	0.474 \| good	4.314 \| good	0.365 \| good
2025-12-06T16:00:00.000Z	54 \| moderate	10.764 \| good	30.118 \| good	11.339 \| good	0.467 \| good	4.634 \| good	0.381 \| good
2025-12-06T17:00:00.000Z	49 \| good	9.168 \| good	43.575 \| good	9.807 \| good	0.531 \| good	7.712 \| good	0.353 \| good
2025-12-06T18:00:00.000Z	49 \| good	9.499 \| good	29.599 \| good	12.019 \| good	0.578 \| good	3.527 \| good	0.364 \| good
2025-12-06T19:00:00.000Z	38 \| good	6.629 \| good	14.259 \| good	13.233 \| good	0.572 \| good	3.694 \| good	0.394 \| good
2025-12-06T20:00:00.000Z	56 \| moderate	12.285 \| fine	49.922 \| good	13.419 \| good	0.576 \| good	3.732 \| good	0.414 \| good
2025-12-06T21:00:00.000Z	56 \| moderate	12.453 \| fine	24.725 \| good	13.872 \| good	0.58 \| good	3.119 \| good	0.379 \| good
2025-12-06T22:00:00.000Z	56 \| moderate	12.314 \| fine	40.548 \| good	13.643 \| good	0.564 \| good	2.886 \| good	0.414 \| good
2025-12-06T23:00:00.000Z	60 \| moderate	13.763 \| fine	66.792 \| fine	12.978 \| good	0.464 \| good	3.101 \| good	0.394 \| good
2025-12-07T00:00:00.000Z	62 \| moderate	15.215 \| fine	53.42 \| good	12.737 \| good	0.447 \| good	3.844 \| good	0.429 \| good
2025-12-07T01:00:00.000Z	62 \| moderate	15.435 \| fine	62.297 \| fine	12.767 \| good	0.401 \| good	3.96 \| good	0.38 \| good
2025-12-07T02:00:00.000Z	67 \| moderate	17.714 \| fine	59.578 \| fine	13.334 \| good	0.322 \| good	8.511 \| good	0.427 \| good
2025-12-07T03:00:00.000Z	73 \| moderate	21.271 \| fine	86.801 \| fine	12.305 \| good	0.318 \| good	10.012 \| good	0.443 \| good
2025-12-07T04:00:00.000Z	77 \| moderate	23.067 \| fine	85.87 \| fine	12.806 \| good	0.338 \| good	11.471 \| good	0.461 \| good
2025-12-07T05:00:00.000Z	62 \| moderate	15.3 \| fine	25.006 \| good	12.58 \| good	0.286 \| good	12.058 \| good	0.464 \| good
2025-12-07T06:00:00.000Z	60 \| moderate	13.634 \| fine	68.767 \| fine	11.399 \| good	0.284 \| good	10.33 \| good	0.448 \| good
2025-12-07T07:00:00.000Z	54 \| moderate	10.795 \| good	41.347 \| good	12.878 \| good	0.29 \| good	9.435 \| good	0.414 \| good
2025-12-07T08:00:00.000Z	54 \| moderate	10.506 \| good	42.343 \| good	12.281 \| good	0.29 \| good	8.176 \| good	0.446 \| good
2025-12-07T09:00:00.000Z	58 \| moderate	12.853 \| fine	50.212 \| good	11.839 \| good	0.344 \| good	7.998 \| good	0.363 \| good
2025-12-07T10:00:00.000Z	58 \| moderate	12.644 \| fine	38.62 \| good	11.425 \| good	0.461 \| good	3.692 \| good	0.242 \| good
2025-12-07T11:00:00.000Z	38 \| good	6.993 \| good	17.091 \| good	15.105 \| good	0.493 \| good	3.442 \| good	0.247 \| good
2025-12-07T12:00:00.000Z	64 \| moderate	16.134 \| fine	73.036 \| fine	7.307 \| good	0.365 \| good	3.337 \| good	0.207 \| good
2025-12-07T13:00:00.000Z	49 \| good	9.324 \| good	34.352 \| good	7.608 \| good	0.372 \| good	2.891 \| good	0.311 \| good
2025-12-07T14:00:00.000Z	33 \| good	6.063 \| good	23.619 \| good	12.467 \| good	0.428 \| good	3.087 \| good	0.379 \| good
2025-12-07T15:00:00.000Z	27 \| good	5.488 \| good	13.781 \| good	12.413 \| good	0.397 \| good	3.13 \| good	0.347 \| good
2025-12-07T16:00:00.000Z	44 \| good	7.691 \| good	28.896 \| good	7.715 \| good	0.352 \| good	3.545 \| good	0.347 \| good
2025-12-07T17:00:00.000Z	27 \| good	4.711 \| good	16.209 \| good	9.061 \| good	0.368 \| good	7.501 \| good	0.347 \| good
2025-12-07T18:00:00.000Z	27 \| good	4.634 \| good	8.032 \| good	10.511 \| good	0.383 \| good	3.68 \| good	0.398 \| good
2025-12-07T19:00:00.000Z	23 \| good	4.425 \| good	25.021 \| good	10.646 \| good	0.405 \| good	3.628 \| good	0.411 \| good
2025-12-07T20:00:00.000Z	24 \| good	3.751 \| good	25.65 \| good	12.784 \| good	0.386 \| good	3.595 \| good	0.395 \| good
2025-12-07T21:00:00.000Z	24 \| good	3.503 \| good	26.273 \| good	10.66 \| good	0.46 \| good	4.27 \| good	0.379 \| good
2025-12-07T22:00:00.000Z	52 \| moderate	9.754 \| good	44.507 \| good	10.148 \| good	0.391 \| good	3.185 \| good	0.363 \| good
2025-12-07T23:00:00.000Z	49 \| good	8.884 \| good	41.959 \| good	9.734 \| good	0.351 \| good	2.938 \| good	0.363 \| good
2025-12-08T00:00:00.000Z	46 \| good	7.757 \| good	49.986 \| good	11.165 \| good	0.416 \| good	4.206 \| good	0.363 \| good
2025-12-08T01:00:00.000Z	58 \| moderate	12.793 \| fine	62.007 \| fine	11.881 \| good	0.33 \| good	3.537 \| good	0.428 \| good
2025-12-08T02:00:00.000Z	52 \| moderate	10.229 \| good	28.513 \| good	20.62 \| good	0.293 \| good	6.797 \| good	0.431 \| good
2025-12-08T03:00:00.000Z	54 \| moderate	10.889 \| good	46.92 \| good	12.715 \| good	0.316 \| good	9.803 \| good	0.431 \| good
2025-12-08T03:00:00.000Z	52 \| moderate	10.229 \| good	28.513 \| good	20.62 \| good	0.293 \| good	6.797 \| good	0.431 \| good
2025-12-08T04:00:00.000Z	56 \| moderate	12.397 \| fine	56.535 \| fine	15.638 \| good	1.843 \| good	20.773 \| good	0.334 \| good
2025-12-08T05:00:00.000Z	56 \| moderate	12.465 \| fine	56.445 \| fine	13.984 \| good	1.939 \| good	21.035 \| good	0.349 \| good
2025-12-08T06:00:00.000Z	49 \| good	9.17 \| good	40.595 \| good	14.212 \| good	2.034 \| good	21.296 \| good	0.365 \| good
2025-12-08T07:00:00.000Z	38 \| good	6.817 \| good	30.472 \| good	13.424 \| good	1.799 \| good	19.977 \| good	0.363 \| good
2025-12-08T08:00:00.000Z	27 \| good	4.645 \| good	19.895 \| good	12.652 \| good	1.565 \| good	18.658 \| good	0.36 \| good
2025-12-08T09:00:00.000Z	22 \| good	3.91 \| good	16.828 \| good	13.114 \| good	1.331 \| good	17.339 \| good	0.358 \| good
2025-12-08T10:00:00.000Z	22 \| good	3.524 \| good	15.787 \| good	13.224 \| good	1.192 \| good	15.285 \| good	0.335 \| good
2025-12-08T11:00:00.000Z	13 \| good	2.223 \| good	9.096 \| good	13.918 \| good	1.053 \| good	13.232 \| good	0.311 \| good
2025-12-08T12:00:00.000Z	13 \| good	1.625 \| good	7.036 \| good	13.928 \| good	0.914 \| good	11.178 \| good	0.288 \| good
2025-12-08T13:00:00.000Z	12 \| good	1.041 \| good	4.12 \| good	13.383 \| good	0.893 \| good	10.948 \| good	0.29 \| good
2025-12-08T14:00:00.000Z	12 \| good	1.426 \| good	6.057 \| good	13.353 \| good	0.873 \| good	10.718 \| good	0.293 \| good
2025-12-08T15:00:00.000Z	13 \| good	1.879 \| good	7.9 \| good	13.84 \| good	0.852 \| good	10.487 \| good	0.295 \| good
2025-12-08T16:00:00.000Z	11 \| good	1.902 \| good	7.907 \| good	11.998 \| good	0.978 \| good	9.784 \| good	0.288 \| good
2025-12-08T17:00:00.000Z	11 \| good	1.435 \| good	6.03 \| good	12.229 \| good	1.105 \| good	9.081 \| good	0.281 \| good
2025-12-08T18:00:00.000Z	13 \| good	2.081 \| good	8.032 \| good	13.868 \| good	1.231 \| good	8.378 \| good	0.274 \| good
2025-12-08T19:00:00.000Z	16 \| good	2.681 \| good	10.949 \| good	14.961 \| good	1.22 \| good	6.858 \| good	0.24 \| good
2025-12-08T20:00:00.000Z	22 \| good	3.791 \| good	16.766 \| good	16.027 \| good	1.208 \| good	5.337 \| good	0.206 \| good
2025-12-08T21:00:00.000Z	33 \| good	5.779 \| good	24.892 \| good	15.419 \| good	1.196 \| good	3.816 \| good	0.173 \| good
2025-12-08T22:00:00.000Z	38 \| good	7.07 \| good	31.684 \| good	14.144 \| good	1.173 \| good	4.562 \| good	0.176 \| good
2025-12-08T23:00:00.000Z	49 \| good	8.702 \| good	37.918 \| good	13.03 \| good	1.15 \| good	5.308 \| good	0.18 \| good
2025-12-09T00:00:00.000Z	49 \| good	9.207 \| good	40.853 \| good	14.34 \| good	1.127 \| good	6.055 \| good	0.184 \| good
2025-12-09T01:00:00.000Z	54 \| moderate	10.964 \| good	48.839 \| good	12.502 \| good	1.218 \| good	10.84 \| good	0.228 \| good
2025-12-09T02:00:00.000Z	54 \| moderate	10.707 \| good	47.795 \| good	12.647 \| good	1.308 \| good	15.625 \| good	0.273 \| good
2025-12-09T03:00:00.000Z	54 \| moderate	10.827 \| good	47.838 \| good	13.18 \| good	1.399 \| good	20.41 \| good	0.317 \| good
2025-12-09T04:00:00.000Z	49 \| good	9.115 \| good	40.794 \| good	12.013 \| good	1.457 \| good	20.414 \| good	0.327 \| good
2025-12-09T05:00:00.000Z	49 \| good	8.543 \| good	37.766 \| good	11.298 \| good	1.516 \| good	20.418 \| good	0.337 \| good
2025-12-09T06:00:00.000Z	38 \| good	6.553 \| good	29.582 \| good	11.263 \| good	1.574 \| good	20.422 \| good	0.347 \| good
2025-12-09T07:00:00.000Z	33 \| good	6.04 \| good	26.649 \| good	9.658 \| good	1.471 \| good	19.451 \| good	0.344 \| good
2025-12-09T08:00:00.000Z	27 \| good	4.865 \| good	20.708 \| good	11.01 \| good	1.367 \| good	18.479 \| good	0.341 \| good
2025-12-09T09:00:00.000Z	22 \| good	4.303 \| good	18.624 \| good	12.222 \| good	1.264 \| good	17.508 \| good	0.338 \| good
2025-12-09T10:00:00.000Z	27 \| good	4.503 \| good	19.612 \| good	14.461 \| good	1.185 \| good	16.309 \| good	0.321 \| good
2025-12-09T11:00:00.000Z	16 \| good	3.428 \| good	14.831 \| good	15.614 \| good	1.105 \| good	15.11 \| good	0.303 \| good
2025-12-09T12:00:00.000Z	14 \| good	2.343 \| good	9.89 \| good	14.808 \| good	1.025 \| good	13.912 \| good	0.285 \| good
2025-12-09T13:00:00.000Z	14 \| good	1.302 \| good	5.044 \| good	14.95 \| good	1.059 \| good	13.839 \| good	0.282 \| good
2025-12-09T14:00:00.000Z	14 \| good	1.607 \| good	6.949 \| good	14.565 \| good	1.093 \| good	13.767 \| good	0.28 \| good
2025-12-09T15:00:00.000Z	13 \| good	1.568 \| good	6.082 \| good	14.387 \| good	1.127 \| good	13.695 \| good	0.277 \| good
2025-12-09T16:00:00.000Z	11 \| good	1.863 \| good	7.898 \| good	11.375 \| good	1.131 \| good	11.738 \| good	0.267 \| good
2025-12-09T17:00:00.000Z	11 \| good	2.007 \| good	7.963 \| good	11.379 \| good	1.135 \| good	9.781 \| good	0.258 \| good
2025-12-09T18:00:00.000Z	22 \| good	3.516 \| good	15.731 \| good	12.349 \| good	1.14 \| good	7.824 \| good	0.248 \| good
2025-12-09T19:00:00.000Z	16 \| good	2.943 \| good	11.895 \| good	13.679 \| good	1.193 \| good	6.645 \| good	0.218 \| good
2025-12-09T20:00:00.000Z	22 \| good	3.729 \| good	15.795 \| good	14.62 \| good	1.246 \| good	5.465 \| good	0.187 \| good
2025-12-09T21:00:00.000Z	27 \| good	4.962 \| good	21.82 \| good	14.916 \| good	1.299 \| good	4.285 \| good	0.157 \| good
2025-12-09T22:00:00.000Z	33 \| good	6.336 \| good	27.787 \| good	15.164 \| good	1.278 \| good	5.107 \| good	0.16 \| good
2025-12-09T23:00:00.000Z	44 \| good	7.623 \| good	33.75 \| good	14.591 \| good	1.256 \| good	5.928 \| good	0.164 \| good
2025-12-10T00:00:00.000Z	49 \| good	9.047 \| good	9.67 \| good	26.495 \| good	1.229 \| good	6.691 \| good	0.167 \| good
2025-12-10T01:00:00.000Z	49 \| good	8.946 \| good	40.558 \| good	13.069 \| good	1.364 \| good	11.817 \| good	0.218 \| good
2025-12-10T02:00:00.000Z	49 \| good	9.102 \| good	40.716 \| good	12.8 \| good	1.493 \| good	16.885 \| good	0.268 \| good
2025-12-10T03:00:00.000Z	49 \| good	8.519 \| good	36.882 \| good	13.206 \| good	1.623 \| good	21.953 \| good	0.319 \| good

Napa, California live air quality index now

Major air pollutants in Napa, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Air quality in nearby cities

American Canyon, California

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Vallejo, California

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Vacaville, California

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Frequently asked questions

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What is the current concentration of PM10 in Napa, California?

What is the current concentration of carbon monoxide (CO) in Napa, California?

What is the current concentration of sulfur dioxide (SO2) in Napa, California?

What is the current concentration of ozone (O3) in Napa, 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 current concentration of PM_2.5 in Napa, California?

What is the current concentration of PM₁₀ in Napa, California?

What is the current concentration of sulfur dioxide (SO₂) in Napa, California?

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What is the current concentration of nitrogen dioxide (NO₂) in Napa, California?