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

The current PM10 concentration at Napa, California is 33.641 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Napa, California is 0.528 ppb.

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

The current ozone (O3) concentration at Napa, California is 40.56 ppm.

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

The current nitrogen dioxide (NO2) concentration at Napa, California is 2.107 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 6.672 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)

Good

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)

6.67 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

33.64 μg/m³

155

255

425

605+

Ozone (O₃)

40.56 ppb

201

201+

Sulfur Dioxide (SO₂)

0.53 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.11 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

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
2026-04-24T01:00:00.000Z	38 \| good	2.23 \| good	9.643 \| good	40.894 \| good	0.375 \| good	1.664 \| good	0.225 \| good
2026-04-24T02:00:00.000Z	39 \| good	1.91 \| good	8.305 \| good	42.148 \| good	0.463 \| good	2.099 \| good	0.225 \| good
2026-04-24T03:00:00.000Z	33 \| good	2.453 \| good	10.022 \| good	35.692 \| good	0.35 \| good	4.041 \| good	0.157 \| good
2026-04-24T04:00:00.000Z	33 \| good	0.855 \| good	7.027 \| good	36.417 \| good	0.364 \| good	2.185 \| good	0.194 \| good
2026-04-24T05:00:00.000Z	31 \| good	1.11 \| good	5.521 \| good	32.877 \| good	0.469 \| good	2.459 \| good	0.21 \| good
2026-04-24T06:00:00.000Z	32 \| good	2.108 \| good	6.553 \| good	34.806 \| good	0.45 \| good	3.312 \| good	0.225 \| good
2026-04-24T07:00:00.000Z	31 \| good	2.69 \| good	16.757 \| good	33.884 \| good	0.571 \| good	2.7 \| good	0.261 \| good
2026-04-24T08:00:00.000Z	29 \| good	5.096 \| good	15.647 \| good	31.286 \| good	0.42 \| good	2.735 \| good	0.245 \| good
2026-04-24T09:00:00.000Z	33 \| good	5.579 \| good	22.045 \| good	32.543 \| good	0.432 \| good	3.072 \| good	0.245 \| good
2026-04-24T10:00:00.000Z	28 \| good	5.075 \| good	15.164 \| good	30.154 \| good	0.343 \| good	2.406 \| good	0.245 \| good
2026-04-24T11:00:00.000Z	33 \| good	5.886 \| good	22.262 \| good	24.981 \| good	0.342 \| good	2.433 \| good	0.245 \| good
2026-04-24T12:00:00.000Z	44 \| good	8.194 \| good	31.878 \| good	30.895 \| good	0.359 \| good	3.157 \| good	0.262 \| good
2026-04-24T13:00:00.000Z	44 \| good	8.169 \| good	31.381 \| good	30.859 \| good	0.418 \| good	3.703 \| good	0.262 \| good
2026-04-24T14:00:00.000Z	44 \| good	7.673 \| good	31.829 \| good	22.495 \| good	0.439 \| good	6.656 \| good	0.279 \| good
2026-04-24T15:00:00.000Z	44 \| good	8.478 \| good	38.632 \| good	34.523 \| good	0.361 \| good	7.278 \| good	0.279 \| good
2026-04-24T16:00:00.000Z	49 \| good	9.005 \| good	37.276 \| good	35.242 \| good	0.463 \| good	6.954 \| good	0.279 \| good
2026-04-24T17:00:00.000Z	33 \| good	6.142 \| good	26.456 \| good	32.471 \| good	0.392 \| good	4.728 \| good	0.279 \| good
2026-04-24T18:00:00.000Z	33 \| good	5.569 \| good	19.634 \| good	32.061 \| good	0.36 \| good	4.097 \| good	0.279 \| good
2026-04-24T19:00:00.000Z	38 \| good	6.771 \| good	25.329 \| good	34.364 \| good	0.338 \| good	2.322 \| good	0.279 \| good
2026-04-24T20:00:00.000Z	33 \| good	6.259 \| good	25.717 \| good	29.346 \| good	0.362 \| good	2.135 \| good	0.279 \| good
2026-04-24T21:00:00.000Z	38 \| good	6.432 \| good	29.871 \| good	40.676 \| good	0.405 \| good	2.152 \| good	0.261 \| good
2026-04-24T22:00:00.000Z	44 \| good	7.915 \| good	37.446 \| good	39.798 \| good	0.422 \| good	2.168 \| good	0.261 \| good
2026-04-24T23:00:00.000Z	44 \| good	8.252 \| good	32.128 \| good	40.666 \| good	0.322 \| good	2.23 \| good	0.261 \| good
2026-04-25T00:00:00.000Z	38 \| good	7.19 \| good	26.152 \| good	40.987 \| good	0.427 \| good	2.11 \| good	0.261 \| good
2026-04-25T01:00:00.000Z	38 \| good	7.029 \| good	30.818 \| good	38.569 \| good	0.391 \| good	2.119 \| good	0.261 \| good
2026-04-25T02:00:00.000Z	36 \| good	6.39 \| good	23.881 \| good	38.862 \| good	0.385 \| good	2.214 \| good	0.245 \| good
2026-04-25T03:00:00.000Z	33 \| good	6.475 \| good	30.747 \| good	36.339 \| good	0.447 \| good	2.38 \| good	0.209 \| good
2026-04-25T04:00:00.000Z	49 \| good	8.511 \| good	39.194 \| good	38.725 \| good	0.468 \| good	3.193 \| good	0.245 \| good
2026-04-25T05:00:00.000Z	38 \| good	7.428 \| good	36.823 \| good	34.733 \| good	0.39 \| good	2.472 \| good	0.262 \| good
2026-04-25T06:00:00.000Z	44 \| good	7.846 \| good	35.038 \| good	35.838 \| good	0.371 \| good	2.211 \| good	0.262 \| good
2026-04-25T07:00:00.000Z	44 \| good	7.86 \| good	32.928 \| good	34.746 \| good	0.287 \| good	2.454 \| good	0.262 \| good
2026-04-25T08:00:00.000Z	49 \| good	9.408 \| good	41.883 \| good	33.889 \| good	0.34 \| good	1.201 \| good	0.262 \| good
2026-04-25T09:00:00.000Z	49 \| good	8.58 \| good	31.816 \| good	34.8 \| good	0.339 \| good	0.996 \| good	0.262 \| good
2026-04-25T10:00:00.000Z	33 \| good	6.486 \| good	21.528 \| good	33.176 \| good	0.455 \| good	1.06 \| good	0.132 \| good
2026-04-25T11:00:00.000Z	32 \| good	5.428 \| good	19.727 \| good	35.109 \| good	0.521 \| good	1.866 \| good	0.121 \| good
2026-04-25T12:00:00.000Z	33 \| good	6.292 \| good	18.125 \| good	29.505 \| good	0.213 \| good	1.872 \| good	0.234 \| good
2026-04-25T13:00:00.000Z	34 \| good	4.54 \| good	16.262 \| good	36.701 \| good	0.453 \| good	1.068 \| good	0.231 \| good
2026-04-25T14:00:00.000Z	35 \| good	4.861 \| good	24.651 \| good	38.177 \| good	0.554 \| good	2.13 \| good	0.279 \| good
2026-04-25T15:00:00.000Z	34 \| good	5.579 \| good	21.365 \| good	36.774 \| good	0.55 \| good	3.386 \| good	0.296 \| good
2026-04-25T16:00:00.000Z	33 \| good	6.299 \| good	28.406 \| good	33.737 \| good	0.557 \| good	3.348 \| good	0.296 \| good
2026-04-25T17:00:00.000Z	38 \| good	7.058 \| good	35.019 \| good	33.805 \| good	0.609 \| good	3.191 \| good	0.296 \| good
2026-04-25T18:00:00.000Z	38 \| good	7.002 \| good	28.31 \| good	37.017 \| good	0.748 \| good	2.583 \| good	0.279 \| good
2026-04-25T19:00:00.000Z	38 \| good	7.354 \| good	34.82 \| good	37.686 \| good	0.743 \| good	2.478 \| good	0.279 \| good
2026-04-25T20:00:00.000Z	36 \| good	5.706 \| good	35.045 \| good	39.183 \| good	0.921 \| good	1.982 \| good	0.279 \| good
2026-04-25T21:00:00.000Z	38 \| good	6.533 \| good	22.893 \| good	38.053 \| good	0.791 \| good	2.082 \| good	0.279 \| good
2026-04-25T22:00:00.000Z	36 \| good	4.842 \| good	25.802 \| good	38.76 \| good	0.647 \| good	1.709 \| good	0.263 \| good
2026-04-25T23:00:00.000Z	36 \| good	5.578 \| good	28.005 \| good	38.956 \| good	0.703 \| good	2.373 \| good	0.263 \| good
2026-04-26T00:00:00.000Z	38 \| good	6.672 \| good	33.641 \| good	40.56 \| good	0.528 \| good	2.107 \| good	0.263 \| good
2026-04-26T00:00:00.000Z	38 \| good	6.672 \| good	33.641 \| good	40.56 \| good	0.528 \| good	2.107 \| good	0.263 \| good
2026-04-26T01:00:00.000Z	41 \| good	5.004 \| good	21.945 \| good	43.536 \| good	0.248 \| good	1.264 \| good	0.124 \| good
2026-04-26T02:00:00.000Z	40 \| good	5.103 \| good	22.015 \| good	42.783 \| good	0.259 \| good	1.576 \| good	0.126 \| good
2026-04-26T03:00:00.000Z	42 \| good	5.093 \| good	22.015 \| good	44.713 \| good	0.271 \| good	1.888 \| good	0.128 \| good
2026-04-26T04:00:00.000Z	39 \| good	5.176 \| good	22.071 \| good	41.964 \| good	0.322 \| good	2.331 \| good	0.131 \| good
2026-04-26T05:00:00.000Z	37 \| good	4.972 \| good	21.071 \| good	40.303 \| good	0.373 \| good	2.774 \| good	0.134 \| good
2026-04-26T06:00:00.000Z	36 \| good	4.414 \| good	19.046 \| good	38.974 \| good	0.425 \| good	3.216 \| good	0.137 \| good
2026-04-26T07:00:00.000Z	35 \| good	4.08 \| good	18.007 \| good	38.328 \| good	0.452 \| good	3.435 \| good	0.139 \| good
2026-04-26T08:00:00.000Z	36 \| good	4.614 \| good	20.018 \| good	38.719 \| good	0.48 \| good	3.654 \| good	0.141 \| good
2026-04-26T09:00:00.000Z	36 \| good	4.159 \| good	18.048 \| good	38.823 \| good	0.507 \| good	3.873 \| good	0.143 \| good
2026-04-26T10:00:00.000Z	35 \| good	4.426 \| good	19.066 \| good	37.903 \| good	0.527 \| good	4.099 \| good	0.144 \| good
2026-04-26T11:00:00.000Z	36 \| good	3.76 \| good	16.085 \| good	39.02 \| good	0.547 \| good	4.325 \| good	0.146 \| good
2026-04-26T12:00:00.000Z	35 \| good	3.79 \| good	16.099 \| good	37.907 \| good	0.567 \| good	4.552 \| good	0.147 \| good
2026-04-26T13:00:00.000Z	32 \| good	4.982 \| good	21.055 \| good	34.591 \| good	0.555 \| good	4.242 \| good	0.148 \| good
2026-04-26T14:00:00.000Z	29 \| good	5.014 \| good	21.915 \| good	31.119 \| good	0.542 \| good	3.932 \| good	0.149 \| good
2026-04-26T15:00:00.000Z	38 \| good	7.014 \| good	30.965 \| good	31.468 \| good	0.53 \| good	3.622 \| good	0.15 \| good
2026-04-26T16:00:00.000Z	44 \| good	7.767 \| good	33.97 \| good	38.006 \| good	0.471 \| good	2.772 \| good	0.144 \| good
2026-04-26T17:00:00.000Z	39 \| good	7.261 \| good	31.961 \| good	42.18 \| good	0.413 \| good	1.921 \| good	0.138 \| good
2026-04-26T18:00:00.000Z	41 \| good	7.286 \| good	31.993 \| good	43.512 \| good	0.354 \| good	1.071 \| good	0.133 \| good
2026-04-26T19:00:00.000Z	40 \| good	7.02 \| good	31.014 \| good	43.428 \| good	0.337 \| good	0.923 \| good	0.13 \| good
2026-04-26T20:00:00.000Z	42 \| good	5.962 \| good	26.93 \| good	44.681 \| good	0.32 \| good	0.775 \| good	0.128 \| good
2026-04-26T21:00:00.000Z	41 \| good	5.186 \| good	22.086 \| good	43.659 \| good	0.303 \| good	0.627 \| good	0.126 \| good
2026-04-26T22:00:00.000Z	40 \| good	4.8 \| good	20.991 \| good	43.414 \| good	0.303 \| good	0.651 \| good	0.125 \| good
2026-04-26T23:00:00.000Z	40 \| good	5.168 \| good	22.033 \| good	43.367 \| good	0.303 \| good	0.674 \| good	0.125 \| good
2026-04-27T00:00:00.000Z	42 \| good	4.55 \| good	19.933 \| good	45.331 \| good	0.303 \| good	0.697 \| good	0.124 \| good
2026-04-27T01:00:00.000Z	42 \| good	4.33 \| good	18.988 \| good	44.741 \| good	0.318 \| good	1.156 \| good	0.127 \| good
2026-04-27T02:00:00.000Z	41 \| good	3.694 \| good	16.055 \| good	43.522 \| good	0.333 \| good	1.616 \| good	0.129 \| good
2026-04-27T03:00:00.000Z	37 \| good	3.948 \| good	17.048 \| good	39.782 \| good	0.347 \| good	2.075 \| good	0.131 \| good
2026-04-27T04:00:00.000Z	36 \| good	4.512 \| good	19.946 \| good	38.854 \| good	0.391 \| good	3.167 \| good	0.138 \| good
2026-04-27T05:00:00.000Z	34 \| good	3.863 \| good	16.956 \| good	36.719 \| good	0.435 \| good	4.26 \| good	0.145 \| good
2026-04-27T06:00:00.000Z	31 \| good	3.814 \| good	16.956 \| good	34.37 \| good	0.479 \| good	5.352 \| good	0.153 \| good
2026-04-27T07:00:00.000Z	29 \| good	4.131 \| good	18.023 \| good	31.09 \| good	0.461 \| good	5.807 \| good	0.156 \| good
2026-04-27T08:00:00.000Z	27 \| good	4.541 \| good	19.972 \| good	27.029 \| good	0.442 \| good	6.262 \| good	0.16 \| good
2026-04-27T09:00:00.000Z	23 \| good	4.26 \| good	18.975 \| good	25.19 \| good	0.424 \| good	6.716 \| good	0.164 \| good
2026-04-27T10:00:00.000Z	27 \| good	4.721 \| good	20.909 \| good	24.077 \| good	0.381 \| good	6.315 \| good	0.161 \| good
2026-04-27T11:00:00.000Z	22 \| good	4.422 \| good	18.986 \| good	24.026 \| good	0.339 \| good	5.913 \| good	0.159 \| good
2026-04-27T12:00:00.000Z	27 \| good	3.962 \| good	16.987 \| good	28.962 \| good	0.296 \| good	5.511 \| good	0.157 \| good
2026-04-27T13:00:00.000Z	26 \| good	4.443 \| good	19.002 \| good	28.087 \| good	0.286 \| good	5.152 \| good	0.162 \| good
2026-04-27T14:00:00.000Z	27 \| good	3.972 \| good	16.995 \| good	28.759 \| good	0.277 \| good	4.792 \| good	0.167 \| good
2026-04-27T15:00:00.000Z	33 \| good	5.52 \| good	23.938 \| good	33.806 \| good	0.268 \| good	4.433 \| good	0.172 \| good
2026-04-27T16:00:00.000Z	35 \| good	6.266 \| good	28.005 \| good	38.07 \| good	0.347 \| good	3.37 \| good	0.16 \| good
2026-04-27T17:00:00.000Z	40 \| good	6.184 \| good	27.066 \| good	42.851 \| good	0.426 \| good	2.306 \| good	0.147 \| good
2026-04-27T18:00:00.000Z	43 \| good	5.202 \| good	22.915 \| good	46.121 \| good	0.505 \| good	1.243 \| good	0.135 \| good
2026-04-27T19:00:00.000Z	44 \| good	4.504 \| good	19.925 \| good	48.447 \| good	0.444 \| good	1.073 \| good	0.133 \| good
2026-04-27T20:00:00.000Z	46 \| good	4.788 \| good	20.971 \| good	50.03 \| good	0.383 \| good	0.903 \| good	0.13 \| good
2026-04-27T21:00:00.000Z	47 \| good	4.65 \| good	19.965 \| good	50.694 \| good	0.322 \| good	0.732 \| good	0.128 \| good
2026-04-27T22:00:00.000Z	46 \| good	5.272 \| good	22.922 \| good	49.717 \| good	0.318 \| good	0.739 \| good	0.127 \| good
2026-04-27T23:00:00.000Z	44 \| good	6.272 \| good	27.842 \| good	46.702 \| good	0.313 \| good	0.746 \| good	0.125 \| good
2026-04-28T00:00:00.000Z	45 \| good	7.374 \| good	10.373 \| good	49.29 \| good	0.306 \| good	0.746 \| good	0.124 \| good

Napa

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Napa, California air quality map: Track AQI near you

0.24ppm

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 09:00:00 on 2026-04-25.

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 11:00:00 on 2026-04-25.

What is the current air quality in Napa, California?

The current air quality in Napa, California is 38, categorized as Good based on real-time data.

What pollutant is the most common in Napa, California?

The most common pollutant in Napa, California is O3.

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 6.672 μg/m³.

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

The current PM₁₀ concentration at Napa, California is 33.641 μg/m³.

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

The current carbon monoxide (CO) concentration at Napa, California is 0.263 ppm.

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

The current sulfur dioxide (SO₂) concentration at Napa, California is 0.528 ppb.

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

The current ozone (O₃) concentration at Napa, California is 40.56 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Napa, California is 2.107 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-24T01:00:00.000Z	38 \| good	2.23 \| good	9.643 \| good	40.894 \| good	0.375 \| good	1.664 \| good	0.225 \| good
2026-04-24T02:00:00.000Z	39 \| good	1.91 \| good	8.305 \| good	42.148 \| good	0.463 \| good	2.099 \| good	0.225 \| good
2026-04-24T03:00:00.000Z	33 \| good	2.453 \| good	10.022 \| good	35.692 \| good	0.35 \| good	4.041 \| good	0.157 \| good
2026-04-24T04:00:00.000Z	33 \| good	0.855 \| good	7.027 \| good	36.417 \| good	0.364 \| good	2.185 \| good	0.194 \| good
2026-04-24T05:00:00.000Z	31 \| good	1.11 \| good	5.521 \| good	32.877 \| good	0.469 \| good	2.459 \| good	0.21 \| good
2026-04-24T06:00:00.000Z	32 \| good	2.108 \| good	6.553 \| good	34.806 \| good	0.45 \| good	3.312 \| good	0.225 \| good
2026-04-24T07:00:00.000Z	31 \| good	2.69 \| good	16.757 \| good	33.884 \| good	0.571 \| good	2.7 \| good	0.261 \| good
2026-04-24T08:00:00.000Z	29 \| good	5.096 \| good	15.647 \| good	31.286 \| good	0.42 \| good	2.735 \| good	0.245 \| good
2026-04-24T09:00:00.000Z	33 \| good	5.579 \| good	22.045 \| good	32.543 \| good	0.432 \| good	3.072 \| good	0.245 \| good
2026-04-24T10:00:00.000Z	28 \| good	5.075 \| good	15.164 \| good	30.154 \| good	0.343 \| good	2.406 \| good	0.245 \| good
2026-04-24T11:00:00.000Z	33 \| good	5.886 \| good	22.262 \| good	24.981 \| good	0.342 \| good	2.433 \| good	0.245 \| good
2026-04-24T12:00:00.000Z	44 \| good	8.194 \| good	31.878 \| good	30.895 \| good	0.359 \| good	3.157 \| good	0.262 \| good
2026-04-24T13:00:00.000Z	44 \| good	8.169 \| good	31.381 \| good	30.859 \| good	0.418 \| good	3.703 \| good	0.262 \| good
2026-04-24T14:00:00.000Z	44 \| good	7.673 \| good	31.829 \| good	22.495 \| good	0.439 \| good	6.656 \| good	0.279 \| good
2026-04-24T15:00:00.000Z	44 \| good	8.478 \| good	38.632 \| good	34.523 \| good	0.361 \| good	7.278 \| good	0.279 \| good
2026-04-24T16:00:00.000Z	49 \| good	9.005 \| good	37.276 \| good	35.242 \| good	0.463 \| good	6.954 \| good	0.279 \| good
2026-04-24T17:00:00.000Z	33 \| good	6.142 \| good	26.456 \| good	32.471 \| good	0.392 \| good	4.728 \| good	0.279 \| good
2026-04-24T18:00:00.000Z	33 \| good	5.569 \| good	19.634 \| good	32.061 \| good	0.36 \| good	4.097 \| good	0.279 \| good
2026-04-24T19:00:00.000Z	38 \| good	6.771 \| good	25.329 \| good	34.364 \| good	0.338 \| good	2.322 \| good	0.279 \| good
2026-04-24T20:00:00.000Z	33 \| good	6.259 \| good	25.717 \| good	29.346 \| good	0.362 \| good	2.135 \| good	0.279 \| good
2026-04-24T21:00:00.000Z	38 \| good	6.432 \| good	29.871 \| good	40.676 \| good	0.405 \| good	2.152 \| good	0.261 \| good
2026-04-24T22:00:00.000Z	44 \| good	7.915 \| good	37.446 \| good	39.798 \| good	0.422 \| good	2.168 \| good	0.261 \| good
2026-04-24T23:00:00.000Z	44 \| good	8.252 \| good	32.128 \| good	40.666 \| good	0.322 \| good	2.23 \| good	0.261 \| good
2026-04-25T00:00:00.000Z	38 \| good	7.19 \| good	26.152 \| good	40.987 \| good	0.427 \| good	2.11 \| good	0.261 \| good
2026-04-25T01:00:00.000Z	38 \| good	7.029 \| good	30.818 \| good	38.569 \| good	0.391 \| good	2.119 \| good	0.261 \| good
2026-04-25T02:00:00.000Z	36 \| good	6.39 \| good	23.881 \| good	38.862 \| good	0.385 \| good	2.214 \| good	0.245 \| good
2026-04-25T03:00:00.000Z	33 \| good	6.475 \| good	30.747 \| good	36.339 \| good	0.447 \| good	2.38 \| good	0.209 \| good
2026-04-25T04:00:00.000Z	49 \| good	8.511 \| good	39.194 \| good	38.725 \| good	0.468 \| good	3.193 \| good	0.245 \| good
2026-04-25T05:00:00.000Z	38 \| good	7.428 \| good	36.823 \| good	34.733 \| good	0.39 \| good	2.472 \| good	0.262 \| good
2026-04-25T06:00:00.000Z	44 \| good	7.846 \| good	35.038 \| good	35.838 \| good	0.371 \| good	2.211 \| good	0.262 \| good
2026-04-25T07:00:00.000Z	44 \| good	7.86 \| good	32.928 \| good	34.746 \| good	0.287 \| good	2.454 \| good	0.262 \| good
2026-04-25T08:00:00.000Z	49 \| good	9.408 \| good	41.883 \| good	33.889 \| good	0.34 \| good	1.201 \| good	0.262 \| good
2026-04-25T09:00:00.000Z	49 \| good	8.58 \| good	31.816 \| good	34.8 \| good	0.339 \| good	0.996 \| good	0.262 \| good
2026-04-25T10:00:00.000Z	33 \| good	6.486 \| good	21.528 \| good	33.176 \| good	0.455 \| good	1.06 \| good	0.132 \| good
2026-04-25T11:00:00.000Z	32 \| good	5.428 \| good	19.727 \| good	35.109 \| good	0.521 \| good	1.866 \| good	0.121 \| good
2026-04-25T12:00:00.000Z	33 \| good	6.292 \| good	18.125 \| good	29.505 \| good	0.213 \| good	1.872 \| good	0.234 \| good
2026-04-25T13:00:00.000Z	34 \| good	4.54 \| good	16.262 \| good	36.701 \| good	0.453 \| good	1.068 \| good	0.231 \| good
2026-04-25T14:00:00.000Z	35 \| good	4.861 \| good	24.651 \| good	38.177 \| good	0.554 \| good	2.13 \| good	0.279 \| good
2026-04-25T15:00:00.000Z	34 \| good	5.579 \| good	21.365 \| good	36.774 \| good	0.55 \| good	3.386 \| good	0.296 \| good
2026-04-25T16:00:00.000Z	33 \| good	6.299 \| good	28.406 \| good	33.737 \| good	0.557 \| good	3.348 \| good	0.296 \| good
2026-04-25T17:00:00.000Z	38 \| good	7.058 \| good	35.019 \| good	33.805 \| good	0.609 \| good	3.191 \| good	0.296 \| good
2026-04-25T18:00:00.000Z	38 \| good	7.002 \| good	28.31 \| good	37.017 \| good	0.748 \| good	2.583 \| good	0.279 \| good
2026-04-25T19:00:00.000Z	38 \| good	7.354 \| good	34.82 \| good	37.686 \| good	0.743 \| good	2.478 \| good	0.279 \| good
2026-04-25T20:00:00.000Z	36 \| good	5.706 \| good	35.045 \| good	39.183 \| good	0.921 \| good	1.982 \| good	0.279 \| good
2026-04-25T21:00:00.000Z	38 \| good	6.533 \| good	22.893 \| good	38.053 \| good	0.791 \| good	2.082 \| good	0.279 \| good
2026-04-25T22:00:00.000Z	36 \| good	4.842 \| good	25.802 \| good	38.76 \| good	0.647 \| good	1.709 \| good	0.263 \| good
2026-04-25T23:00:00.000Z	36 \| good	5.578 \| good	28.005 \| good	38.956 \| good	0.703 \| good	2.373 \| good	0.263 \| good
2026-04-26T00:00:00.000Z	38 \| good	6.672 \| good	33.641 \| good	40.56 \| good	0.528 \| good	2.107 \| good	0.263 \| good
2026-04-26T00:00:00.000Z	38 \| good	6.672 \| good	33.641 \| good	40.56 \| good	0.528 \| good	2.107 \| good	0.263 \| good
2026-04-26T01:00:00.000Z	41 \| good	5.004 \| good	21.945 \| good	43.536 \| good	0.248 \| good	1.264 \| good	0.124 \| good
2026-04-26T02:00:00.000Z	40 \| good	5.103 \| good	22.015 \| good	42.783 \| good	0.259 \| good	1.576 \| good	0.126 \| good
2026-04-26T03:00:00.000Z	42 \| good	5.093 \| good	22.015 \| good	44.713 \| good	0.271 \| good	1.888 \| good	0.128 \| good
2026-04-26T04:00:00.000Z	39 \| good	5.176 \| good	22.071 \| good	41.964 \| good	0.322 \| good	2.331 \| good	0.131 \| good
2026-04-26T05:00:00.000Z	37 \| good	4.972 \| good	21.071 \| good	40.303 \| good	0.373 \| good	2.774 \| good	0.134 \| good
2026-04-26T06:00:00.000Z	36 \| good	4.414 \| good	19.046 \| good	38.974 \| good	0.425 \| good	3.216 \| good	0.137 \| good
2026-04-26T07:00:00.000Z	35 \| good	4.08 \| good	18.007 \| good	38.328 \| good	0.452 \| good	3.435 \| good	0.139 \| good
2026-04-26T08:00:00.000Z	36 \| good	4.614 \| good	20.018 \| good	38.719 \| good	0.48 \| good	3.654 \| good	0.141 \| good
2026-04-26T09:00:00.000Z	36 \| good	4.159 \| good	18.048 \| good	38.823 \| good	0.507 \| good	3.873 \| good	0.143 \| good
2026-04-26T10:00:00.000Z	35 \| good	4.426 \| good	19.066 \| good	37.903 \| good	0.527 \| good	4.099 \| good	0.144 \| good
2026-04-26T11:00:00.000Z	36 \| good	3.76 \| good	16.085 \| good	39.02 \| good	0.547 \| good	4.325 \| good	0.146 \| good
2026-04-26T12:00:00.000Z	35 \| good	3.79 \| good	16.099 \| good	37.907 \| good	0.567 \| good	4.552 \| good	0.147 \| good
2026-04-26T13:00:00.000Z	32 \| good	4.982 \| good	21.055 \| good	34.591 \| good	0.555 \| good	4.242 \| good	0.148 \| good
2026-04-26T14:00:00.000Z	29 \| good	5.014 \| good	21.915 \| good	31.119 \| good	0.542 \| good	3.932 \| good	0.149 \| good
2026-04-26T15:00:00.000Z	38 \| good	7.014 \| good	30.965 \| good	31.468 \| good	0.53 \| good	3.622 \| good	0.15 \| good
2026-04-26T16:00:00.000Z	44 \| good	7.767 \| good	33.97 \| good	38.006 \| good	0.471 \| good	2.772 \| good	0.144 \| good
2026-04-26T17:00:00.000Z	39 \| good	7.261 \| good	31.961 \| good	42.18 \| good	0.413 \| good	1.921 \| good	0.138 \| good
2026-04-26T18:00:00.000Z	41 \| good	7.286 \| good	31.993 \| good	43.512 \| good	0.354 \| good	1.071 \| good	0.133 \| good
2026-04-26T19:00:00.000Z	40 \| good	7.02 \| good	31.014 \| good	43.428 \| good	0.337 \| good	0.923 \| good	0.13 \| good
2026-04-26T20:00:00.000Z	42 \| good	5.962 \| good	26.93 \| good	44.681 \| good	0.32 \| good	0.775 \| good	0.128 \| good
2026-04-26T21:00:00.000Z	41 \| good	5.186 \| good	22.086 \| good	43.659 \| good	0.303 \| good	0.627 \| good	0.126 \| good
2026-04-26T22:00:00.000Z	40 \| good	4.8 \| good	20.991 \| good	43.414 \| good	0.303 \| good	0.651 \| good	0.125 \| good
2026-04-26T23:00:00.000Z	40 \| good	5.168 \| good	22.033 \| good	43.367 \| good	0.303 \| good	0.674 \| good	0.125 \| good
2026-04-27T00:00:00.000Z	42 \| good	4.55 \| good	19.933 \| good	45.331 \| good	0.303 \| good	0.697 \| good	0.124 \| good
2026-04-27T01:00:00.000Z	42 \| good	4.33 \| good	18.988 \| good	44.741 \| good	0.318 \| good	1.156 \| good	0.127 \| good
2026-04-27T02:00:00.000Z	41 \| good	3.694 \| good	16.055 \| good	43.522 \| good	0.333 \| good	1.616 \| good	0.129 \| good
2026-04-27T03:00:00.000Z	37 \| good	3.948 \| good	17.048 \| good	39.782 \| good	0.347 \| good	2.075 \| good	0.131 \| good
2026-04-27T04:00:00.000Z	36 \| good	4.512 \| good	19.946 \| good	38.854 \| good	0.391 \| good	3.167 \| good	0.138 \| good
2026-04-27T05:00:00.000Z	34 \| good	3.863 \| good	16.956 \| good	36.719 \| good	0.435 \| good	4.26 \| good	0.145 \| good
2026-04-27T06:00:00.000Z	31 \| good	3.814 \| good	16.956 \| good	34.37 \| good	0.479 \| good	5.352 \| good	0.153 \| good
2026-04-27T07:00:00.000Z	29 \| good	4.131 \| good	18.023 \| good	31.09 \| good	0.461 \| good	5.807 \| good	0.156 \| good
2026-04-27T08:00:00.000Z	27 \| good	4.541 \| good	19.972 \| good	27.029 \| good	0.442 \| good	6.262 \| good	0.16 \| good
2026-04-27T09:00:00.000Z	23 \| good	4.26 \| good	18.975 \| good	25.19 \| good	0.424 \| good	6.716 \| good	0.164 \| good
2026-04-27T10:00:00.000Z	27 \| good	4.721 \| good	20.909 \| good	24.077 \| good	0.381 \| good	6.315 \| good	0.161 \| good
2026-04-27T11:00:00.000Z	22 \| good	4.422 \| good	18.986 \| good	24.026 \| good	0.339 \| good	5.913 \| good	0.159 \| good
2026-04-27T12:00:00.000Z	27 \| good	3.962 \| good	16.987 \| good	28.962 \| good	0.296 \| good	5.511 \| good	0.157 \| good
2026-04-27T13:00:00.000Z	26 \| good	4.443 \| good	19.002 \| good	28.087 \| good	0.286 \| good	5.152 \| good	0.162 \| good
2026-04-27T14:00:00.000Z	27 \| good	3.972 \| good	16.995 \| good	28.759 \| good	0.277 \| good	4.792 \| good	0.167 \| good
2026-04-27T15:00:00.000Z	33 \| good	5.52 \| good	23.938 \| good	33.806 \| good	0.268 \| good	4.433 \| good	0.172 \| good
2026-04-27T16:00:00.000Z	35 \| good	6.266 \| good	28.005 \| good	38.07 \| good	0.347 \| good	3.37 \| good	0.16 \| good
2026-04-27T17:00:00.000Z	40 \| good	6.184 \| good	27.066 \| good	42.851 \| good	0.426 \| good	2.306 \| good	0.147 \| good
2026-04-27T18:00:00.000Z	43 \| good	5.202 \| good	22.915 \| good	46.121 \| good	0.505 \| good	1.243 \| good	0.135 \| good
2026-04-27T19:00:00.000Z	44 \| good	4.504 \| good	19.925 \| good	48.447 \| good	0.444 \| good	1.073 \| good	0.133 \| good
2026-04-27T20:00:00.000Z	46 \| good	4.788 \| good	20.971 \| good	50.03 \| good	0.383 \| good	0.903 \| good	0.13 \| good
2026-04-27T21:00:00.000Z	47 \| good	4.65 \| good	19.965 \| good	50.694 \| good	0.322 \| good	0.732 \| good	0.128 \| good
2026-04-27T22:00:00.000Z	46 \| good	5.272 \| good	22.922 \| good	49.717 \| good	0.318 \| good	0.739 \| good	0.127 \| good
2026-04-27T23:00:00.000Z	44 \| good	6.272 \| good	27.842 \| good	46.702 \| good	0.313 \| good	0.746 \| good	0.125 \| good
2026-04-28T00:00:00.000Z	45 \| good	7.374 \| good	10.373 \| good	49.29 \| good	0.306 \| good	0.746 \| good	0.124 \| 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

Fairfield, California

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Vacaville, California

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Frequently asked questions

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

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?

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

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