What is the current concentration of PM10 in Union City, California?

The current PM10 concentration at Union City, California is 35.393 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Union City, California is 0.876 ppb.

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

The current ozone (O3) concentration at Union City, California is 32.871 ppm.

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

The current nitrogen dioxide (NO2) concentration at Union City, California is 6.04 ppb.

Live air quality index in Union City, California today

Name: Live air pollution levels in Union City, California today
Creator: Ambee

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

Live AQI (Air Quality Index)

Good

Union City, California

Last updated: ... (Local time)

Major air pollutants in Union City, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

8.07 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

35.39 μg/m³

155

255

425

605+

Ozone (O₃)

32.87 ppb

201

201+

Sulfur Dioxide (SO₂)

0.88 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.04 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.37 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Union City, California

Scroll To Air Quality Map

Track live Union City, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T22:00:00.000Z	66 \| moderate	16.912 \| fine	74.24 \| fine	35.457 \| good	0.919 \| good	4.75 \| good	0.355 \| good
2025-06-04T23:00:00.000Z	62 \| moderate	15.339 \| fine	68.463 \| fine	37.514 \| good	0.846 \| good	4.556 \| good	0.33 \| good
2025-06-05T00:00:00.000Z	60 \| moderate	14.487 \| fine	56.176 \| fine	37.165 \| good	0.83 \| good	4.978 \| good	0.302 \| good
2025-06-05T01:00:00.000Z	58 \| moderate	13.325 \| fine	53.799 \| good	37.362 \| good	0.791 \| good	3.806 \| good	0.326 \| good
2025-06-05T02:00:00.000Z	56 \| moderate	12.499 \| fine	52.479 \| good	36.343 \| good	0.894 \| good	3.779 \| good	0.319 \| good
2025-06-05T03:00:00.000Z	56 \| moderate	12.164 \| fine	53.785 \| good	34.747 \| good	0.809 \| good	5.123 \| good	0.323 \| good
2025-06-05T04:00:00.000Z	54 \| moderate	10.631 \| good	43.996 \| good	33.492 \| good	0.729 \| good	6.836 \| good	0.323 \| good
2025-06-05T05:00:00.000Z	52 \| moderate	9.999 \| good	42.449 \| good	31.778 \| good	0.723 \| good	6.15 \| good	0.347 \| good
2025-06-05T06:00:00.000Z	52 \| moderate	9.853 \| good	43.043 \| good	29.522 \| good	0.689 \| good	5.134 \| good	0.294 \| good
2025-06-05T07:00:00.000Z	52 \| moderate	9.908 \| good	50.408 \| good	27.186 \| good	0.698 \| good	4.745 \| good	0.294 \| good
2025-06-05T08:00:00.000Z	49 \| good	9.414 \| good	40.918 \| good	27.162 \| good	0.721 \| good	4.959 \| good	0.265 \| good
2025-06-05T09:00:00.000Z	44 \| good	8.122 \| good	38.601 \| good	26.844 \| good	0.778 \| good	4.003 \| good	0.277 \| good
2025-06-05T10:00:00.000Z	52 \| moderate	9.586 \| good	49.583 \| good	26.41 \| good	0.926 \| good	3.854 \| good	0.212 \| good
2025-06-05T11:00:00.000Z	49 \| good	9.124 \| good	38.22 \| good	27.01 \| good	0.906 \| good	4.178 \| good	0.212 \| good
2025-06-05T12:00:00.000Z	49 \| good	9.242 \| good	35.71 \| good	26.719 \| good	1.071 \| good	4.558 \| good	0.212 \| good
2025-06-05T13:00:00.000Z	52 \| moderate	9.984 \| good	46.223 \| good	25.502 \| good	1.588 \| good	3.436 \| good	0.252 \| good
2025-06-05T14:00:00.000Z	44 \| good	8.277 \| good	36.705 \| good	26.864 \| good	1.118 \| good	4.781 \| good	0.272 \| good
2025-06-05T15:00:00.000Z	44 \| good	7.517 \| good	34.27 \| good	27.2 \| good	1.125 \| good	4.303 \| good	0.242 \| good
2025-06-05T16:00:00.000Z	44 \| good	8.319 \| good	34.37 \| good	26.931 \| good	1.114 \| good	5.923 \| good	0.257 \| good
2025-06-05T17:00:00.000Z	44 \| good	7.913 \| good	34.832 \| good	27.97 \| good	1.157 \| good	5.712 \| good	0.294 \| good
2025-06-05T18:00:00.000Z	49 \| good	8.661 \| good	39.534 \| good	29.921 \| good	1.094 \| good	5.225 \| good	0.295 \| good
2025-06-05T19:00:00.000Z	44 \| good	7.858 \| good	34.185 \| good	29.718 \| good	0.955 \| good	5.356 \| good	0.295 \| good
2025-06-05T20:00:00.000Z	44 \| good	7.92 \| good	35.028 \| good	31.618 \| good	0.637 \| good	5.273 \| good	0.295 \| good
2025-06-05T21:00:00.000Z	44 \| good	8.389 \| good	41.346 \| good	33.736 \| good	0.892 \| good	5.263 \| good	0.294 \| good
2025-06-05T22:00:00.000Z	44 \| good	7.605 \| good	32.7 \| good	34.68 \| good	0.691 \| good	5.263 \| good	0.295 \| good
2025-06-05T23:00:00.000Z	44 \| good	7.659 \| good	33.985 \| good	35.3 \| good	1.074 \| good	4.49 \| good	0.295 \| good
2025-06-06T00:00:00.000Z	44 \| good	7.734 \| good	34.22 \| good	34.841 \| good	0.828 \| good	3.879 \| good	0.295 \| good
2025-06-06T01:00:00.000Z	44 \| good	7.515 \| good	32.152 \| good	34.566 \| good	0.699 \| good	3.413 \| good	0.29 \| good
2025-06-06T02:00:00.000Z	44 \| good	7.699 \| good	35.524 \| good	33.137 \| good	0.744 \| good	2.954 \| good	0.266 \| good
2025-06-06T03:00:00.000Z	38 \| good	7.216 \| good	26.576 \| good	32.656 \| good	0.913 \| good	2.823 \| good	0.29 \| good
2025-06-06T04:00:00.000Z	33 \| good	6.094 \| good	27.498 \| good	31.433 \| good	0.735 \| good	3.504 \| good	0.295 \| good
2025-06-06T05:00:00.000Z	33 \| good	5.836 \| good	25.284 \| good	29.197 \| good	0.677 \| good	4.208 \| good	0.295 \| good
2025-06-06T06:00:00.000Z	27 \| good	4.895 \| good	21.07 \| good	27.789 \| good	0.671 \| good	4.565 \| good	0.295 \| good
2025-06-06T07:00:00.000Z	25 \| good	4.282 \| good	18.655 \| good	26.808 \| good	0.555 \| good	4.977 \| good	0.294 \| good
2025-06-06T08:00:00.000Z	33 \| good	6.343 \| good	28.718 \| good	26.089 \| good	0.495 \| good	4.269 \| good	0.266 \| good
2025-06-06T09:00:00.000Z	23 \| good	4.368 \| good	18.918 \| good	25.307 \| good	0.681 \| good	4.084 \| good	0.25 \| good
2025-06-06T10:00:00.000Z	27 \| good	4.863 \| good	23.656 \| good	25.048 \| good	0.671 \| good	3.621 \| good	0.212 \| good
2025-06-06T11:00:00.000Z	33 \| good	6.023 \| good	26.107 \| good	25.296 \| good	0.698 \| good	2.906 \| good	0.212 \| good
2025-06-06T12:00:00.000Z	33 \| good	5.615 \| good	24.026 \| good	25.413 \| good	0.631 \| good	3.083 \| good	0.212 \| good
2025-06-06T13:00:00.000Z	33 \| good	6.145 \| good	27.793 \| good	25.1 \| good	0.658 \| good	4.649 \| good	0.281 \| good
2025-06-06T14:00:00.000Z	38 \| good	6.616 \| good	28.754 \| good	25.287 \| good	0.702 \| good	5.298 \| good	0.272 \| good
2025-06-06T15:00:00.000Z	38 \| good	7.227 \| good	30.618 \| good	25.353 \| good	0.894 \| good	5.989 \| good	0.308 \| good
2025-06-06T16:00:00.000Z	44 \| good	7.706 \| good	35.077 \| good	26.698 \| good	0.502 \| good	4.111 \| good	0.266 \| good
2025-06-06T17:00:00.000Z	38 \| good	7.499 \| good	34.901 \| good	25.914 \| good	0.748 \| good	5.369 \| good	0.295 \| good
2025-06-06T18:00:00.000Z	44 \| good	8.071 \| good	35.178 \| good	27.785 \| good	0.762 \| good	6.546 \| good	0.359 \| good
2025-06-06T19:00:00.000Z	44 \| good	7.95 \| good	34.529 \| good	28.216 \| good	0.826 \| good	6.18 \| good	0.323 \| good
2025-06-06T20:00:00.000Z	44 \| good	7.78 \| good	36.856 \| good	30.111 \| good	1.042 \| good	6.04 \| good	0.358 \| good
2025-06-06T21:00:00.000Z	44 \| good	7.693 \| good	33.633 \| good	32.245 \| good	0.871 \| good	5.704 \| good	0.359 \| good
2025-06-06T21:00:00.000Z	44 \| good	8.068 \| good	35.393 \| good	32.871 \| good	0.876 \| good	6.04 \| good	0.366 \| good
2025-06-06T22:00:00.000Z	58 \| moderate	12.577 \| fine	56.862 \| fine	38.344 \| good	0.857 \| good	1.941 \| good	0.115 \| good
2025-06-06T23:00:00.000Z	56 \| moderate	12.319 \| fine	55.356 \| fine	37.715 \| good	1.02 \| good	2.09 \| good	0.121 \| good
2025-06-07T00:00:00.000Z	58 \| moderate	12.849 \| fine	57.545 \| fine	33.289 \| good	1.183 \| good	2.24 \| good	0.127 \| good
2025-06-07T01:00:00.000Z	58 \| moderate	13.131 \| fine	58.838 \| fine	29.248 \| good	0.913 \| good	5.41 \| good	0.125 \| good
2025-06-07T02:00:00.000Z	56 \| moderate	12.149 \| fine	54.474 \| good	27.034 \| good	1.096 \| good	5.645 \| good	0.13 \| good
2025-06-07T03:00:00.000Z	56 \| moderate	12.494 \| fine	56.72 \| fine	24.636 \| good	1.28 \| good	5.881 \| good	0.134 \| good
2025-06-07T04:00:00.000Z	58 \| moderate	12.713 \| fine	57.201 \| fine	21.287 \| good	1.228 \| good	8.238 \| good	0.132 \| good
2025-06-07T05:00:00.000Z	56 \| moderate	12.271 \| fine	55.276 \| fine	21.616 \| good	1.401 \| good	9.196 \| good	0.139 \| good
2025-06-07T06:00:00.000Z	56 \| moderate	11.9 \| good	53.474 \| good	20.765 \| good	1.574 \| good	10.154 \| good	0.146 \| good
2025-06-07T07:00:00.000Z	56 \| moderate	12.098 \| good	54.53 \| good	21.344 \| good	1.3 \| good	9.442 \| good	0.137 \| good
2025-06-07T08:00:00.000Z	56 \| moderate	12.149 \| fine	54.718 \| good	20.591 \| good	1.48 \| good	11.141 \| good	0.147 \| good
2025-06-07T09:00:00.000Z	58 \| moderate	12.802 \| fine	57.496 \| fine	20.161 \| good	1.659 \| good	12.84 \| good	0.157 \| good
2025-06-07T10:00:00.000Z	56 \| moderate	12.404 \| fine	55.749 \| fine	19.078 \| good	1.233 \| good	8.72 \| good	0.13 \| good
2025-06-07T11:00:00.000Z	56 \| moderate	12.263 \| fine	55.108 \| fine	17.403 \| good	1.4 \| good	10.986 \| good	0.143 \| good
2025-06-07T12:00:00.000Z	58 \| moderate	12.842 \| fine	56.935 \| fine	21.944 \| good	1.567 \| good	13.253 \| good	0.155 \| good
2025-06-07T13:00:00.000Z	56 \| moderate	12.367 \| fine	56.168 \| fine	20.996 \| good	1.534 \| good	5.144 \| good	0.122 \| good
2025-06-07T14:00:00.000Z	58 \| moderate	12.601 \| fine	57.142 \| fine	22.868 \| good	1.859 \| good	6.296 \| good	0.132 \| good
2025-06-07T15:00:00.000Z	56 \| moderate	12.258 \| fine	55.034 \| fine	24.401 \| good	2.183 \| good	7.448 \| good	0.141 \| good
2025-06-07T16:00:00.000Z	54 \| moderate	10.967 \| good	48.667 \| good	24.255 \| good	1.32 \| good	3.332 \| good	0.121 \| good
2025-06-07T17:00:00.000Z	52 \| moderate	10.144 \| good	44.971 \| good	24.85 \| good	1.51 \| good	3.813 \| good	0.128 \| good
2025-06-07T18:00:00.000Z	52 \| moderate	9.645 \| good	42.933 \| good	26.79 \| good	1.7 \| good	4.293 \| good	0.134 \| good
2025-06-07T19:00:00.000Z	54 \| moderate	10.925 \| good	48.336 \| good	33.183 \| good	1.069 \| good	1.721 \| good	0.115 \| good
2025-06-07T20:00:00.000Z	54 \| moderate	11.159 \| good	49.245 \| good	36.894 \| good	1.204 \| good	1.923 \| good	0.12 \| good
2025-06-07T21:00:00.000Z	52 \| moderate	10.249 \| good	45.364 \| good	37.564 \| good	1.339 \| good	2.125 \| good	0.126 \| good
2025-06-07T22:00:00.000Z	52 \| moderate	9.854 \| good	43.974 \| good	35.778 \| good	0.808 \| good	2.056 \| good	0.116 \| good
2025-06-07T23:00:00.000Z	54 \| moderate	10.847 \| good	47.987 \| good	33.414 \| good	0.959 \| good	2.213 \| good	0.121 \| good
2025-06-08T00:00:00.000Z	56 \| moderate	11.855 \| good	52.497 \| good	31.305 \| good	1.111 \| good	2.371 \| good	0.126 \| good
2025-06-08T01:00:00.000Z	56 \| moderate	12.083 \| good	54.259 \| good	28.907 \| good	0.752 \| good	4.399 \| good	0.122 \| good
2025-06-08T02:00:00.000Z	54 \| moderate	11.048 \| good	48.851 \| good	26.831 \| good	0.948 \| good	5.166 \| good	0.13 \| good
2025-06-08T03:00:00.000Z	56 \| moderate	12.054 \| good	54.057 \| good	22.042 \| good	1.145 \| good	5.932 \| good	0.137 \| good
2025-06-08T04:00:00.000Z	58 \| moderate	12.686 \| fine	57.166 \| fine	20.906 \| good	0.768 \| good	4.607 \| good	0.119 \| good
2025-06-08T05:00:00.000Z	56 \| moderate	12.403 \| fine	55.488 \| fine	20.553 \| good	1.008 \| good	5.99 \| good	0.127 \| good
2025-06-08T06:00:00.000Z	56 \| moderate	11.672 \| good	51.187 \| good	21.337 \| good	1.248 \| good	7.373 \| good	0.135 \| good
2025-06-08T07:00:00.000Z	56 \| moderate	11.763 \| good	52.025 \| good	21.208 \| good	0.785 \| good	4.169 \| good	0.115 \| good
2025-06-08T08:00:00.000Z	56 \| moderate	11.512 \| good	51.053 \| good	21.45 \| good	1.035 \| good	5.662 \| good	0.124 \| good
2025-06-08T09:00:00.000Z	56 \| moderate	11.56 \| good	51.168 \| good	20.557 \| good	1.286 \| good	7.155 \| good	0.132 \| good
2025-06-08T10:00:00.000Z	54 \| moderate	10.883 \| good	48.21 \| good	20.954 \| good	0.772 \| good	3.717 \| good	0.112 \| good
2025-06-08T11:00:00.000Z	54 \| moderate	10.662 \| good	47.31 \| good	20.79 \| good	1.028 \| good	5.206 \| good	0.12 \| good
2025-06-08T12:00:00.000Z	56 \| moderate	12.095 \| good	53.973 \| good	27.074 \| good	1.284 \| good	6.694 \| good	0.128 \| good
2025-06-08T13:00:00.000Z	54 \| moderate	11.395 \| good	50.341 \| good	24.669 \| good	0.718 \| good	3.132 \| good	0.112 \| good
2025-06-08T14:00:00.000Z	56 \| moderate	12.121 \| fine	54.676 \| good	25.723 \| good	0.962 \| good	4.114 \| good	0.118 \| good
2025-06-08T15:00:00.000Z	56 \| moderate	11.56 \| good	51.275 \| good	27.925 \| good	1.207 \| good	5.096 \| good	0.125 \| good
2025-06-08T16:00:00.000Z	54 \| moderate	10.541 \| good	46.639 \| good	29.577 \| good	0.643 \| good	2.323 \| good	0.116 \| good
2025-06-08T17:00:00.000Z	52 \| moderate	10.394 \| good	46.047 \| good	31.453 \| good	0.78 \| good	2.914 \| good	0.122 \| good
2025-06-08T18:00:00.000Z	52 \| moderate	9.908 \| good	44.027 \| good	32.875 \| good	0.916 \| good	3.504 \| good	0.128 \| good
2025-06-08T19:00:00.000Z	54 \| moderate	10.669 \| good	47.33 \| good	34.774 \| good	0.654 \| good	1.449 \| good	0.113 \| good
2025-06-08T20:00:00.000Z	54 \| moderate	10.797 \| good	47.718 \| good	36.169 \| good	0.788 \| good	1.728 \| good	0.118 \| good
2025-06-08T21:00:00.000Z	54 \| moderate	10.591 \| good	47.067 \| good	36.186 \| good	0.922 \| good	2.007 \| good	0.123 \| good

Union City

Get reliable air quality data to drive your business

Union City, California air quality map: Track AQI near you

0.36ppm

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 Union City, California updated?

The air quality for Union City, California is updated every hour.

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

The worst air quality in Union City, California in the last 24 hours was observed at 08:00:00 on 2025-06-06.

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

In the last 24 hrs, the best air quality in Union City, California was observed at 09:00:00 on 2025-06-06.

What is the current air quality in Union City, California?

The current air quality in Union City, California is 44, categorized as Good based on real-time data.

What pollutant is the most common in Union City, California?

The most common pollutant in Union City, California is PM2.5.

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

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

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

The current PM_2.5 concentration at Union City, California is 8.068 μg/m³.

What is the current concentration of PM₁₀ in Union City, California?

The current PM₁₀ concentration at Union City, California is 35.393 μg/m³.

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

The current carbon monoxide (CO) concentration at Union City, California is 0.366 ppm.

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

The current sulfur dioxide (SO₂) concentration at Union City, California is 0.876 ppb.

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

The current ozone (O₃) concentration at Union City, California is 32.871 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Union City, California is 6.04 ppb.

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