What is the sulfur dioxide (SO2) level in Costa Mesa, California at the moment?

Currently, Costa Mesa, California has a sulfur dioxide (SO2) concentration of 0.182 ppb.

What is the ozone (O3) level in Costa Mesa, California at the moment?

The current ozone (O3) level in Costa Mesa, California at the moment is 20.765 ppm.

What is the nitrogen dioxide (NO2) level in Costa Mesa, California at the moment?

Nitrogen dioxide (NO2) level in Costa Mesa, California at the moment is 6.329 ppb.

Live air quality index in Costa Mesa, California today

Name: Live air pollution levels in Costa Mesa, California today
Creator: Ambee

Stay updated with real-time air quality in Costa Mesa, 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

Costa Mesa, California

Last updated: ... (Local time)

Major air pollutants in Costa Mesa, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.79 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

13.43 μg/m³

155

255

425

605+

Ozone (O₃)

20.83 ppb

201

201+

Sulfur Dioxide (SO₂)

0.38 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.16 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.17 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Costa Mesa, California

Get Live Pollen Counts

Costa Mesa, California

Scroll To Air Quality Map

Track live Costa Mesa, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-25T17:00:00.000Z	27 \| good	4.893 \| good	20.471 \| good	17.597 \| good	0.349 \| good	6.759 \| good	0.202 \| good
2025-07-25T18:00:00.000Z	33 \| good	5.626 \| good	22.528 \| good	20.95 \| good	0.348 \| good	5.762 \| good	0.192 \| good
2025-07-25T19:00:00.000Z	25 \| good	4.272 \| good	21.717 \| good	27.249 \| good	0.325 \| good	5.71 \| good	0.246 \| good
2025-07-25T20:00:00.000Z	27 \| good	4.783 \| good	14.712 \| good	29.197 \| good	0.298 \| good	3.564 \| good	0.233 \| good
2025-07-25T21:00:00.000Z	32 \| good	4.588 \| good	19.043 \| good	35.056 \| good	0.262 \| good	7.551 \| good	0.233 \| good
2025-07-25T22:00:00.000Z	33 \| good	6.024 \| good	26.44 \| good	34.755 \| good	0.267 \| good	8.563 \| good	0.209 \| good
2025-07-25T23:00:00.000Z	33 \| good	4.764 \| good	25.073 \| good	36.071 \| good	0.27 \| good	8.806 \| good	0.233 \| good
2025-07-26T00:00:00.000Z	28 \| good	3.882 \| good	18.255 \| good	30.181 \| good	0.388 \| good	7.863 \| good	0.233 \| good
2025-07-26T01:00:00.000Z	28 \| good	3.17 \| good	14.681 \| good	30.148 \| good	0.467 \| good	7.915 \| good	0.246 \| good
2025-07-26T02:00:00.000Z	26 \| good	3.098 \| good	16.304 \| good	27.554 \| good	0.448 \| good	6.044 \| good	0.226 \| good
2025-07-26T03:00:00.000Z	30 \| good	3.524 \| good	14.533 \| good	31.747 \| good	0.571 \| good	6.645 \| good	0.18 \| good
2025-07-26T04:00:00.000Z	27 \| good	4.873 \| good	25.54 \| good	29.2 \| good	0.423 \| good	5.746 \| good	0.26 \| good
2025-07-26T05:00:00.000Z	26 \| good	3.146 \| good	15.641 \| good	27.819 \| good	0.344 \| good	4.679 \| good	0.26 \| good
2025-07-26T06:00:00.000Z	26 \| good	4.023 \| good	10.606 \| good	28.053 \| good	0.327 \| good	4.69 \| good	0.285 \| good
2025-07-26T07:00:00.000Z	27 \| good	5.043 \| good	19.74 \| good	19.99 \| good	0.31 \| good	4.954 \| good	0.304 \| good
2025-07-26T08:00:00.000Z	27 \| good	4.738 \| good	19.352 \| good	18.909 \| good	0.205 \| good	6.145 \| good	0.248 \| good
2025-07-26T09:00:00.000Z	18 \| good	3.264 \| good	13.665 \| good	19.169 \| good	0.239 \| good	5.816 \| good	0.214 \| good
2025-07-26T10:00:00.000Z	19 \| good	3.062 \| good	10.272 \| good	19.82 \| good	0.302 \| good	7.145 \| good	0.197 \| good
2025-07-26T11:00:00.000Z	33 \| good	6.338 \| good	9.793 \| good	21.068 \| good	0.226 \| good	5.515 \| good	0.209 \| good
2025-07-26T12:00:00.000Z	23 \| good	4.181 \| good	14.404 \| good	25.427 \| good	0.182 \| good	4.666 \| good	0.209 \| good
2025-07-26T13:00:00.000Z	22 \| good	4.026 \| good	14.064 \| good	21.821 \| good	0.184 \| good	5.906 \| good	0.209 \| good
2025-07-26T14:00:00.000Z	22 \| good	3.89 \| good	19.254 \| good	17.342 \| good	0.266 \| good	6.922 \| good	0.283 \| good
2025-07-26T15:00:00.000Z	19 \| good	2.906 \| good	12.82 \| good	20.18 \| good	0.2 \| good	6.019 \| good	0.272 \| good
2025-07-26T16:00:00.000Z	23 \| good	3.493 \| good	25.422 \| good	20.765 \| good	0.182 \| good	6.329 \| good	0.238 \| good
2025-07-26T17:00:00.000Z	23 \| good	3.342 \| good	21.359 \| good	25.409 \| good	0.242 \| good	5.546 \| good	0.238 \| good
2025-07-26T18:00:00.000Z	26 \| good	3.043 \| good	16.822 \| good	27.694 \| good	0.215 \| good	7.587 \| good	0.199 \| good
2025-07-26T19:00:00.000Z	27 \| good	3.19 \| good	15.295 \| good	29.057 \| good	0.248 \| good	6.948 \| good	0.224 \| good
2025-07-26T20:00:00.000Z	30 \| good	3.984 \| good	20.351 \| good	32.15 \| good	0.258 \| good	5.972 \| good	0.214 \| good
2025-07-26T21:00:00.000Z	31 \| good	5.314 \| good	23.626 \| good	34.362 \| good	0.314 \| good	6.693 \| good	0.179 \| good
2025-07-26T22:00:00.000Z	38 \| good	7.373 \| good	21.092 \| good	36.216 \| good	0.287 \| good	6.899 \| good	0.192 \| good
2025-07-26T23:00:00.000Z	34 \| good	3.221 \| good	15.659 \| good	36.661 \| good	0.31 \| good	6.415 \| good	0.192 \| good
2025-07-27T00:00:00.000Z	31 \| good	3.469 \| good	18.629 \| good	34.267 \| good	0.504 \| good	7.693 \| good	0.226 \| good
2025-07-27T01:00:00.000Z	30 \| good	3.137 \| good	14.617 \| good	32.274 \| good	0.569 \| good	7.396 \| good	0.26 \| good
2025-07-27T02:00:00.000Z	31 \| good	3.695 \| good	17.337 \| good	32.74 \| good	0.58 \| good	6.999 \| good	0.226 \| good
2025-07-27T03:00:00.000Z	29 \| good	4.22 \| good	21.223 \| good	30.923 \| good	0.514 \| good	6.816 \| good	0.283 \| good
2025-07-27T04:00:00.000Z	34 \| good	4.502 \| good	23.75 \| good	37.107 \| good	0.411 \| good	5.123 \| good	0.214 \| good
2025-07-27T05:00:00.000Z	31 \| good	4.858 \| good	16.72 \| good	32.975 \| good	0.386 \| good	4.001 \| good	0.273 \| good
2025-07-27T06:00:00.000Z	27 \| good	4.612 \| good	16.45 \| good	29.293 \| good	0.274 \| good	5.42 \| good	0.307 \| good
2025-07-27T07:00:00.000Z	27 \| good	5.432 \| good	17.69 \| good	26.836 \| good	0.276 \| good	5.992 \| good	0.379 \| good
2025-07-27T08:00:00.000Z	27 \| good	5.084 \| good	22.375 \| good	25.766 \| good	0.237 \| good	5.632 \| good	0.387 \| good
2025-07-27T09:00:00.000Z	33 \| good	5.896 \| good	29.752 \| good	20.026 \| good	0.289 \| good	5.919 \| good	0.273 \| good
2025-07-27T10:00:00.000Z	29 \| good	5.229 \| good	30.776 \| good	20.113 \| good	0.288 \| good	6.632 \| good	0.273 \| good
2025-07-27T11:00:00.000Z	22 \| good	4.286 \| good	16.38 \| good	20.31 \| good	0.281 \| good	6.938 \| good	0.273 \| good
2025-07-27T12:00:00.000Z	22 \| good	3.794 \| good	12.07 \| good	20.521 \| good	0.209 \| good	8.388 \| good	0.146 \| good
2025-07-27T13:00:00.000Z	27 \| good	4.981 \| good	16.021 \| good	22.398 \| good	0.171 \| good	8.033 \| good	0.208 \| good
2025-07-27T14:00:00.000Z	44 \| good	5.046 \| good	47.177 \| good	15.697 \| good	0.17 \| good	7.226 \| good	0.213 \| good
2025-07-27T15:00:00.000Z	22 \| good	4.272 \| good	19.255 \| good	19.087 \| good	0.427 \| good	7.223 \| good	0.235 \| good
2025-07-27T16:00:00.000Z	33 \| good	5.786 \| good	13.432 \| good	20.826 \| good	0.381 \| good	6.162 \| good	0.168 \| good
2025-07-27T16:00:00.000Z	33 \| good	5.786 \| good	13.432 \| good	20.826 \| good	0.381 \| good	6.162 \| good	0.168 \| good
2025-07-26T18:00:00.000Z	28 \| good	2.566 \| good	10.517 \| good	29.671 \| good	1.636 \| good	3.661 \| good	0.122 \| good
2025-07-26T19:00:00.000Z	29 \| good	2.68 \| good	11.215 \| good	31.372 \| good	1.475 \| good	3.112 \| good	0.12 \| good
2025-07-26T20:00:00.000Z	32 \| good	5.342 \| good	23.293 \| good	35.283 \| good	1.314 \| good	2.563 \| good	0.119 \| good
2025-07-26T21:00:00.000Z	36 \| good	6.312 \| good	28.097 \| good	39.326 \| good	1.153 \| good	2.014 \| good	0.117 \| good
2025-07-26T22:00:00.000Z	36 \| good	4.796 \| good	21.02 \| good	39.088 \| good	1.193 \| good	2.101 \| good	0.118 \| good
2025-07-26T23:00:00.000Z	34 \| good	3.172 \| good	13.86 \| good	36.833 \| good	1.232 \| good	2.189 \| good	0.119 \| good
2025-07-27T00:00:00.000Z	32 \| good	2.917 \| good	12.042 \| good	35.204 \| good	1.272 \| good	2.276 \| good	0.12 \| good
2025-07-27T01:00:00.000Z	31 \| good	1.701 \| good	7.102 \| good	33.013 \| good	1.352 \| good	3.311 \| good	0.123 \| good
2025-07-27T02:00:00.000Z	31 \| good	2.074 \| good	8.391 \| good	32.732 \| good	1.433 \| good	4.347 \| good	0.126 \| good
2025-07-27T03:00:00.000Z	26 \| good	1.62 \| good	6.636 \| good	27.687 \| good	1.513 \| good	5.382 \| good	0.128 \| good
2025-07-27T04:00:00.000Z	25 \| good	1.795 \| good	7.562 \| good	26.625 \| good	1.719 \| good	6.497 \| good	0.13 \| good
2025-07-27T05:00:00.000Z	24 \| good	2.854 \| good	11.954 \| good	25.664 \| good	1.926 \| good	7.612 \| good	0.132 \| good
2025-07-27T06:00:00.000Z	24 \| good	2.755 \| good	11.421 \| good	25.726 \| good	2.132 \| good	8.727 \| good	0.134 \| good
2025-07-27T07:00:00.000Z	24 \| good	2.868 \| good	11.769 \| good	25.554 \| good	2.286 \| good	9.524 \| good	0.135 \| good
2025-07-27T08:00:00.000Z	23 \| good	3.331 \| good	14.312 \| good	25.462 \| good	2.439 \| good	10.322 \| good	0.137 \| good
2025-07-27T09:00:00.000Z	27 \| good	4.685 \| good	20.488 \| good	25.481 \| good	2.593 \| good	11.119 \| good	0.139 \| good
2025-07-27T10:00:00.000Z	23 \| good	2.799 \| good	11.393 \| good	25.225 \| good	2.567 \| good	11.117 \| good	0.137 \| good
2025-07-27T11:00:00.000Z	23 \| good	2.649 \| good	10.979 \| good	25.023 \| good	2.542 \| good	11.116 \| good	0.136 \| good
2025-07-27T12:00:00.000Z	23 \| good	2.878 \| good	11.985 \| good	24.641 \| good	2.516 \| good	11.114 \| good	0.135 \| good
2025-07-27T13:00:00.000Z	23 \| good	4.292 \| good	18.938 \| good	25.095 \| good	2.632 \| good	9.778 \| good	0.134 \| good
2025-07-27T14:00:00.000Z	27 \| good	5.251 \| good	23.07 \| good	25.15 \| good	2.749 \| good	8.442 \| good	0.134 \| good
2025-07-27T15:00:00.000Z	33 \| good	6.038 \| good	26.29 \| good	26.416 \| good	2.865 \| good	7.107 \| good	0.133 \| good
2025-07-27T16:00:00.000Z	44 \| good	8.439 \| good	37.083 \| good	29.154 \| good	2.859 \| good	6.555 \| good	0.131 \| good
2025-07-27T17:00:00.000Z	38 \| good	7.342 \| good	32.473 \| good	30.914 \| good	2.852 \| good	6.004 \| good	0.128 \| good
2025-07-27T18:00:00.000Z	30 \| good	4.042 \| good	17.319 \| good	31.987 \| good	2.845 \| good	5.452 \| good	0.126 \| good
2025-07-27T19:00:00.000Z	31 \| good	3.639 \| good	15.766 \| good	33.107 \| good	2.637 \| good	4.759 \| good	0.121 \| good
2025-07-27T20:00:00.000Z	34 \| good	5.376 \| good	23.79 \| good	36.977 \| good	2.429 \| good	4.066 \| good	0.116 \| good
2025-07-27T21:00:00.000Z	38 \| good	5.94 \| good	25.952 \| good	40.824 \| good	2.222 \| good	3.372 \| good	0.112 \| good
2025-07-27T22:00:00.000Z	35 \| good	5.105 \| good	22.293 \| good	38.367 \| good	2.124 \| good	3.234 \| good	0.11 \| good
2025-07-27T23:00:00.000Z	33 \| good	3.627 \| good	15.899 \| good	35.703 \| good	2.027 \| good	3.097 \| good	0.109 \| good
2025-07-28T00:00:00.000Z	32 \| good	3.296 \| good	14.498 \| good	34.582 \| good	1.929 \| good	2.959 \| good	0.107 \| good
2025-07-28T01:00:00.000Z	31 \| good	2.922 \| good	11.963 \| good	32.977 \| good	1.936 \| good	4.218 \| good	0.109 \| good
2025-07-28T02:00:00.000Z	31 \| good	2.035 \| good	8.535 \| good	33.805 \| good	1.942 \| good	5.476 \| good	0.111 \| good
2025-07-28T03:00:00.000Z	27 \| good	3.323 \| good	14.407 \| good	29.259 \| good	1.948 \| good	6.735 \| good	0.113 \| good
2025-07-28T04:00:00.000Z	26 \| good	3.935 \| good	17.023 \| good	27.747 \| good	1.992 \| good	7.898 \| good	0.113 \| good
2025-07-28T05:00:00.000Z	25 \| good	3.387 \| good	14.761 \| good	27.307 \| good	2.035 \| good	9.061 \| good	0.114 \| good
2025-07-28T06:00:00.000Z	24 \| good	2.727 \| good	10.938 \| good	25.873 \| good	2.079 \| good	10.225 \| good	0.115 \| good
2025-07-28T07:00:00.000Z	23 \| good	1.955 \| good	8.176 \| good	25.324 \| good	2.07 \| good	10.498 \| good	0.117 \| good
2025-07-28T08:00:00.000Z	23 \| good	3.253 \| good	14.154 \| good	24.633 \| good	2.062 \| good	10.772 \| good	0.118 \| good
2025-07-28T09:00:00.000Z	27 \| good	4.664 \| good	20.126 \| good	24.357 \| good	2.053 \| good	11.046 \| good	0.12 \| good
2025-07-28T10:00:00.000Z	22 \| good	3.979 \| good	17.511 \| good	22.028 \| good	2.071 \| good	10.588 \| good	0.118 \| good
2025-07-28T11:00:00.000Z	22 \| good	3.732 \| good	16.302 \| good	20.574 \| good	2.09 \| good	10.131 \| good	0.116 \| good
2025-07-28T12:00:00.000Z	22 \| good	4.089 \| good	17.93 \| good	15.832 \| good	2.108 \| good	9.673 \| good	0.114 \| good
2025-07-28T13:00:00.000Z	33 \| good	6.118 \| good	27.217 \| good	14.115 \| good	2.21 \| good	8.317 \| good	0.114 \| good
2025-07-28T14:00:00.000Z	33 \| good	6.321 \| good	27.791 \| good	19.083 \| good	2.311 \| good	6.96 \| good	0.113 \| good
2025-07-28T15:00:00.000Z	33 \| good	5.559 \| good	24.211 \| good	23.321 \| good	2.413 \| good	5.604 \| good	0.112 \| good
2025-07-28T16:00:00.000Z	38 \| good	7.087 \| good	31.327 \| good	27.004 \| good	2.488 \| good	5.257 \| good	0.111 \| good
2025-07-28T17:00:00.000Z	44 \| good	7.842 \| good	34.755 \| good	32.491 \| good	2.562 \| good	4.91 \| good	0.11 \| good

Costa Mesa

Get reliable air quality data to drive your business

Costa Mesa, California air quality map: Stay updated on AQI near you

0.26ppm

How accurate is California, USA air quality data?

Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Costa Mesa, California?

The air quality information for Costa Mesa, California is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Costa Mesa, California at its worst?

In the past 24 hours, the air quality in Costa Mesa, California was at its worst at 11:00:00 on 2025-07-26.

When did Costa Mesa, California experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Costa Mesa, California was observed at 09:00:00 on 2025-07-26.

What is the AQI in Costa Mesa, California right now?

As of now, the AQI in Costa Mesa, California is 23, indicating Good conditions.

What is the most common type of pollution in Costa Mesa, California?

Costa Mesa, California air has the highest levels of PM10.

What should I do in case of poor air quality in Costa Mesa, California?

Poor air quality in Costa Mesa, California means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Costa Mesa, California at the moment?

PM_2.5 levels in Costa Mesa, California are currently 3.493 μg/m³.

What is the PM₁₀ level in Costa Mesa, California at the moment?

The PM₁₀ concentration in Costa Mesa, California is 25.422 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Costa Mesa, California at the moment?

The current carbon monoxide (CO) concentration in Costa Mesa, California is 0.238 ppm.

What is the sulfur dioxide (SO₂) level in Costa Mesa, California at the moment?

Currently, Costa Mesa, California has a sulfur dioxide (SO₂) concentration of 0.182 ppb.

What is the ozone (O₃) level in Costa Mesa, California at the moment?

The current ozone (O₃) level in Costa Mesa, California at the moment is 20.765 ppm.

What is the nitrogen dioxide (NO₂) level in Costa Mesa, California at the moment?

Nitrogen dioxide (NO₂) level in Costa Mesa, California at the moment is 6.329 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-25T17:00:00.000Z	27 \| good	4.893 \| good	20.471 \| good	17.597 \| good	0.349 \| good	6.759 \| good	0.202 \| good
2025-07-25T18:00:00.000Z	33 \| good	5.626 \| good	22.528 \| good	20.95 \| good	0.348 \| good	5.762 \| good	0.192 \| good
2025-07-25T19:00:00.000Z	25 \| good	4.272 \| good	21.717 \| good	27.249 \| good	0.325 \| good	5.71 \| good	0.246 \| good
2025-07-25T20:00:00.000Z	27 \| good	4.783 \| good	14.712 \| good	29.197 \| good	0.298 \| good	3.564 \| good	0.233 \| good
2025-07-25T21:00:00.000Z	32 \| good	4.588 \| good	19.043 \| good	35.056 \| good	0.262 \| good	7.551 \| good	0.233 \| good
2025-07-25T22:00:00.000Z	33 \| good	6.024 \| good	26.44 \| good	34.755 \| good	0.267 \| good	8.563 \| good	0.209 \| good
2025-07-25T23:00:00.000Z	33 \| good	4.764 \| good	25.073 \| good	36.071 \| good	0.27 \| good	8.806 \| good	0.233 \| good
2025-07-26T00:00:00.000Z	28 \| good	3.882 \| good	18.255 \| good	30.181 \| good	0.388 \| good	7.863 \| good	0.233 \| good
2025-07-26T01:00:00.000Z	28 \| good	3.17 \| good	14.681 \| good	30.148 \| good	0.467 \| good	7.915 \| good	0.246 \| good
2025-07-26T02:00:00.000Z	26 \| good	3.098 \| good	16.304 \| good	27.554 \| good	0.448 \| good	6.044 \| good	0.226 \| good
2025-07-26T03:00:00.000Z	30 \| good	3.524 \| good	14.533 \| good	31.747 \| good	0.571 \| good	6.645 \| good	0.18 \| good
2025-07-26T04:00:00.000Z	27 \| good	4.873 \| good	25.54 \| good	29.2 \| good	0.423 \| good	5.746 \| good	0.26 \| good
2025-07-26T05:00:00.000Z	26 \| good	3.146 \| good	15.641 \| good	27.819 \| good	0.344 \| good	4.679 \| good	0.26 \| good
2025-07-26T06:00:00.000Z	26 \| good	4.023 \| good	10.606 \| good	28.053 \| good	0.327 \| good	4.69 \| good	0.285 \| good
2025-07-26T07:00:00.000Z	27 \| good	5.043 \| good	19.74 \| good	19.99 \| good	0.31 \| good	4.954 \| good	0.304 \| good
2025-07-26T08:00:00.000Z	27 \| good	4.738 \| good	19.352 \| good	18.909 \| good	0.205 \| good	6.145 \| good	0.248 \| good
2025-07-26T09:00:00.000Z	18 \| good	3.264 \| good	13.665 \| good	19.169 \| good	0.239 \| good	5.816 \| good	0.214 \| good
2025-07-26T10:00:00.000Z	19 \| good	3.062 \| good	10.272 \| good	19.82 \| good	0.302 \| good	7.145 \| good	0.197 \| good
2025-07-26T11:00:00.000Z	33 \| good	6.338 \| good	9.793 \| good	21.068 \| good	0.226 \| good	5.515 \| good	0.209 \| good
2025-07-26T12:00:00.000Z	23 \| good	4.181 \| good	14.404 \| good	25.427 \| good	0.182 \| good	4.666 \| good	0.209 \| good
2025-07-26T13:00:00.000Z	22 \| good	4.026 \| good	14.064 \| good	21.821 \| good	0.184 \| good	5.906 \| good	0.209 \| good
2025-07-26T14:00:00.000Z	22 \| good	3.89 \| good	19.254 \| good	17.342 \| good	0.266 \| good	6.922 \| good	0.283 \| good
2025-07-26T15:00:00.000Z	19 \| good	2.906 \| good	12.82 \| good	20.18 \| good	0.2 \| good	6.019 \| good	0.272 \| good
2025-07-26T16:00:00.000Z	23 \| good	3.493 \| good	25.422 \| good	20.765 \| good	0.182 \| good	6.329 \| good	0.238 \| good
2025-07-26T17:00:00.000Z	23 \| good	3.342 \| good	21.359 \| good	25.409 \| good	0.242 \| good	5.546 \| good	0.238 \| good
2025-07-26T18:00:00.000Z	26 \| good	3.043 \| good	16.822 \| good	27.694 \| good	0.215 \| good	7.587 \| good	0.199 \| good
2025-07-26T19:00:00.000Z	27 \| good	3.19 \| good	15.295 \| good	29.057 \| good	0.248 \| good	6.948 \| good	0.224 \| good
2025-07-26T20:00:00.000Z	30 \| good	3.984 \| good	20.351 \| good	32.15 \| good	0.258 \| good	5.972 \| good	0.214 \| good
2025-07-26T21:00:00.000Z	31 \| good	5.314 \| good	23.626 \| good	34.362 \| good	0.314 \| good	6.693 \| good	0.179 \| good
2025-07-26T22:00:00.000Z	38 \| good	7.373 \| good	21.092 \| good	36.216 \| good	0.287 \| good	6.899 \| good	0.192 \| good
2025-07-26T23:00:00.000Z	34 \| good	3.221 \| good	15.659 \| good	36.661 \| good	0.31 \| good	6.415 \| good	0.192 \| good
2025-07-27T00:00:00.000Z	31 \| good	3.469 \| good	18.629 \| good	34.267 \| good	0.504 \| good	7.693 \| good	0.226 \| good
2025-07-27T01:00:00.000Z	30 \| good	3.137 \| good	14.617 \| good	32.274 \| good	0.569 \| good	7.396 \| good	0.26 \| good
2025-07-27T02:00:00.000Z	31 \| good	3.695 \| good	17.337 \| good	32.74 \| good	0.58 \| good	6.999 \| good	0.226 \| good
2025-07-27T03:00:00.000Z	29 \| good	4.22 \| good	21.223 \| good	30.923 \| good	0.514 \| good	6.816 \| good	0.283 \| good
2025-07-27T04:00:00.000Z	34 \| good	4.502 \| good	23.75 \| good	37.107 \| good	0.411 \| good	5.123 \| good	0.214 \| good
2025-07-27T05:00:00.000Z	31 \| good	4.858 \| good	16.72 \| good	32.975 \| good	0.386 \| good	4.001 \| good	0.273 \| good
2025-07-27T06:00:00.000Z	27 \| good	4.612 \| good	16.45 \| good	29.293 \| good	0.274 \| good	5.42 \| good	0.307 \| good
2025-07-27T07:00:00.000Z	27 \| good	5.432 \| good	17.69 \| good	26.836 \| good	0.276 \| good	5.992 \| good	0.379 \| good
2025-07-27T08:00:00.000Z	27 \| good	5.084 \| good	22.375 \| good	25.766 \| good	0.237 \| good	5.632 \| good	0.387 \| good
2025-07-27T09:00:00.000Z	33 \| good	5.896 \| good	29.752 \| good	20.026 \| good	0.289 \| good	5.919 \| good	0.273 \| good
2025-07-27T10:00:00.000Z	29 \| good	5.229 \| good	30.776 \| good	20.113 \| good	0.288 \| good	6.632 \| good	0.273 \| good
2025-07-27T11:00:00.000Z	22 \| good	4.286 \| good	16.38 \| good	20.31 \| good	0.281 \| good	6.938 \| good	0.273 \| good
2025-07-27T12:00:00.000Z	22 \| good	3.794 \| good	12.07 \| good	20.521 \| good	0.209 \| good	8.388 \| good	0.146 \| good
2025-07-27T13:00:00.000Z	27 \| good	4.981 \| good	16.021 \| good	22.398 \| good	0.171 \| good	8.033 \| good	0.208 \| good
2025-07-27T14:00:00.000Z	44 \| good	5.046 \| good	47.177 \| good	15.697 \| good	0.17 \| good	7.226 \| good	0.213 \| good
2025-07-27T15:00:00.000Z	22 \| good	4.272 \| good	19.255 \| good	19.087 \| good	0.427 \| good	7.223 \| good	0.235 \| good
2025-07-27T16:00:00.000Z	33 \| good	5.786 \| good	13.432 \| good	20.826 \| good	0.381 \| good	6.162 \| good	0.168 \| good
2025-07-27T16:00:00.000Z	33 \| good	5.786 \| good	13.432 \| good	20.826 \| good	0.381 \| good	6.162 \| good	0.168 \| good
2025-07-26T18:00:00.000Z	28 \| good	2.566 \| good	10.517 \| good	29.671 \| good	1.636 \| good	3.661 \| good	0.122 \| good
2025-07-26T19:00:00.000Z	29 \| good	2.68 \| good	11.215 \| good	31.372 \| good	1.475 \| good	3.112 \| good	0.12 \| good
2025-07-26T20:00:00.000Z	32 \| good	5.342 \| good	23.293 \| good	35.283 \| good	1.314 \| good	2.563 \| good	0.119 \| good
2025-07-26T21:00:00.000Z	36 \| good	6.312 \| good	28.097 \| good	39.326 \| good	1.153 \| good	2.014 \| good	0.117 \| good
2025-07-26T22:00:00.000Z	36 \| good	4.796 \| good	21.02 \| good	39.088 \| good	1.193 \| good	2.101 \| good	0.118 \| good
2025-07-26T23:00:00.000Z	34 \| good	3.172 \| good	13.86 \| good	36.833 \| good	1.232 \| good	2.189 \| good	0.119 \| good
2025-07-27T00:00:00.000Z	32 \| good	2.917 \| good	12.042 \| good	35.204 \| good	1.272 \| good	2.276 \| good	0.12 \| good
2025-07-27T01:00:00.000Z	31 \| good	1.701 \| good	7.102 \| good	33.013 \| good	1.352 \| good	3.311 \| good	0.123 \| good
2025-07-27T02:00:00.000Z	31 \| good	2.074 \| good	8.391 \| good	32.732 \| good	1.433 \| good	4.347 \| good	0.126 \| good
2025-07-27T03:00:00.000Z	26 \| good	1.62 \| good	6.636 \| good	27.687 \| good	1.513 \| good	5.382 \| good	0.128 \| good
2025-07-27T04:00:00.000Z	25 \| good	1.795 \| good	7.562 \| good	26.625 \| good	1.719 \| good	6.497 \| good	0.13 \| good
2025-07-27T05:00:00.000Z	24 \| good	2.854 \| good	11.954 \| good	25.664 \| good	1.926 \| good	7.612 \| good	0.132 \| good
2025-07-27T06:00:00.000Z	24 \| good	2.755 \| good	11.421 \| good	25.726 \| good	2.132 \| good	8.727 \| good	0.134 \| good
2025-07-27T07:00:00.000Z	24 \| good	2.868 \| good	11.769 \| good	25.554 \| good	2.286 \| good	9.524 \| good	0.135 \| good
2025-07-27T08:00:00.000Z	23 \| good	3.331 \| good	14.312 \| good	25.462 \| good	2.439 \| good	10.322 \| good	0.137 \| good
2025-07-27T09:00:00.000Z	27 \| good	4.685 \| good	20.488 \| good	25.481 \| good	2.593 \| good	11.119 \| good	0.139 \| good
2025-07-27T10:00:00.000Z	23 \| good	2.799 \| good	11.393 \| good	25.225 \| good	2.567 \| good	11.117 \| good	0.137 \| good
2025-07-27T11:00:00.000Z	23 \| good	2.649 \| good	10.979 \| good	25.023 \| good	2.542 \| good	11.116 \| good	0.136 \| good
2025-07-27T12:00:00.000Z	23 \| good	2.878 \| good	11.985 \| good	24.641 \| good	2.516 \| good	11.114 \| good	0.135 \| good
2025-07-27T13:00:00.000Z	23 \| good	4.292 \| good	18.938 \| good	25.095 \| good	2.632 \| good	9.778 \| good	0.134 \| good
2025-07-27T14:00:00.000Z	27 \| good	5.251 \| good	23.07 \| good	25.15 \| good	2.749 \| good	8.442 \| good	0.134 \| good
2025-07-27T15:00:00.000Z	33 \| good	6.038 \| good	26.29 \| good	26.416 \| good	2.865 \| good	7.107 \| good	0.133 \| good
2025-07-27T16:00:00.000Z	44 \| good	8.439 \| good	37.083 \| good	29.154 \| good	2.859 \| good	6.555 \| good	0.131 \| good
2025-07-27T17:00:00.000Z	38 \| good	7.342 \| good	32.473 \| good	30.914 \| good	2.852 \| good	6.004 \| good	0.128 \| good
2025-07-27T18:00:00.000Z	30 \| good	4.042 \| good	17.319 \| good	31.987 \| good	2.845 \| good	5.452 \| good	0.126 \| good
2025-07-27T19:00:00.000Z	31 \| good	3.639 \| good	15.766 \| good	33.107 \| good	2.637 \| good	4.759 \| good	0.121 \| good
2025-07-27T20:00:00.000Z	34 \| good	5.376 \| good	23.79 \| good	36.977 \| good	2.429 \| good	4.066 \| good	0.116 \| good
2025-07-27T21:00:00.000Z	38 \| good	5.94 \| good	25.952 \| good	40.824 \| good	2.222 \| good	3.372 \| good	0.112 \| good
2025-07-27T22:00:00.000Z	35 \| good	5.105 \| good	22.293 \| good	38.367 \| good	2.124 \| good	3.234 \| good	0.11 \| good
2025-07-27T23:00:00.000Z	33 \| good	3.627 \| good	15.899 \| good	35.703 \| good	2.027 \| good	3.097 \| good	0.109 \| good
2025-07-28T00:00:00.000Z	32 \| good	3.296 \| good	14.498 \| good	34.582 \| good	1.929 \| good	2.959 \| good	0.107 \| good
2025-07-28T01:00:00.000Z	31 \| good	2.922 \| good	11.963 \| good	32.977 \| good	1.936 \| good	4.218 \| good	0.109 \| good
2025-07-28T02:00:00.000Z	31 \| good	2.035 \| good	8.535 \| good	33.805 \| good	1.942 \| good	5.476 \| good	0.111 \| good
2025-07-28T03:00:00.000Z	27 \| good	3.323 \| good	14.407 \| good	29.259 \| good	1.948 \| good	6.735 \| good	0.113 \| good
2025-07-28T04:00:00.000Z	26 \| good	3.935 \| good	17.023 \| good	27.747 \| good	1.992 \| good	7.898 \| good	0.113 \| good
2025-07-28T05:00:00.000Z	25 \| good	3.387 \| good	14.761 \| good	27.307 \| good	2.035 \| good	9.061 \| good	0.114 \| good
2025-07-28T06:00:00.000Z	24 \| good	2.727 \| good	10.938 \| good	25.873 \| good	2.079 \| good	10.225 \| good	0.115 \| good
2025-07-28T07:00:00.000Z	23 \| good	1.955 \| good	8.176 \| good	25.324 \| good	2.07 \| good	10.498 \| good	0.117 \| good
2025-07-28T08:00:00.000Z	23 \| good	3.253 \| good	14.154 \| good	24.633 \| good	2.062 \| good	10.772 \| good	0.118 \| good
2025-07-28T09:00:00.000Z	27 \| good	4.664 \| good	20.126 \| good	24.357 \| good	2.053 \| good	11.046 \| good	0.12 \| good
2025-07-28T10:00:00.000Z	22 \| good	3.979 \| good	17.511 \| good	22.028 \| good	2.071 \| good	10.588 \| good	0.118 \| good
2025-07-28T11:00:00.000Z	22 \| good	3.732 \| good	16.302 \| good	20.574 \| good	2.09 \| good	10.131 \| good	0.116 \| good
2025-07-28T12:00:00.000Z	22 \| good	4.089 \| good	17.93 \| good	15.832 \| good	2.108 \| good	9.673 \| good	0.114 \| good
2025-07-28T13:00:00.000Z	33 \| good	6.118 \| good	27.217 \| good	14.115 \| good	2.21 \| good	8.317 \| good	0.114 \| good
2025-07-28T14:00:00.000Z	33 \| good	6.321 \| good	27.791 \| good	19.083 \| good	2.311 \| good	6.96 \| good	0.113 \| good
2025-07-28T15:00:00.000Z	33 \| good	5.559 \| good	24.211 \| good	23.321 \| good	2.413 \| good	5.604 \| good	0.112 \| good
2025-07-28T16:00:00.000Z	38 \| good	7.087 \| good	31.327 \| good	27.004 \| good	2.488 \| good	5.257 \| good	0.111 \| good
2025-07-28T17:00:00.000Z	44 \| good	7.842 \| good	34.755 \| good	32.491 \| good	2.562 \| good	4.91 \| good	0.11 \| good

Live air quality index in Costa Mesa, California today

Major air pollutants in Costa Mesa, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Costa Mesa, California air quality map: Stay updated on AQI near you

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Frequently asked questions

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What is the PM2.5 level in Costa Mesa, California at the moment?

What is the PM10 level in Costa Mesa, California at the moment?

What is the carbon monoxide (CO) level in Costa Mesa, California at the moment?

What is the sulfur dioxide (SO2) level in Costa Mesa, California at the moment?

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What is the nitrogen dioxide (NO2) level in Costa Mesa, California at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Costa Mesa, California at the moment?

What is the PM₁₀ level in Costa Mesa, California at the moment?

What is the sulfur dioxide (SO₂) level in Costa Mesa, California at the moment?

What is the ozone (O₃) level in Costa Mesa, California at the moment?

What is the nitrogen dioxide (NO₂) level in Costa Mesa, California at the moment?