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 0.447 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 8.766 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 15.844 ppb.

Live air quality index in Costa Mesa, California today

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

PM2.5 levels in Costa Mesa, California are currently 26.182 μg/m3.

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

The PM10 concentration in Costa Mesa, California is 79.495 μg/m3 at the moment.

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)

Moderate

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)

24.16 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

46.76 μg/m³

155

255

425

605+

Ozone (O₃)

3.52 ppb

201

201+

Sulfur Dioxide (SO₂)

0.35 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

21.59 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.64 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
2026-01-21T16:00:00.000Z	77 \| moderate	22.938 \| fine	33.76 \| good	25.187 \| good	0.89 \| good	23.83 \| good	0.726 \| good
2026-01-21T17:00:00.000Z	77 \| moderate	23.23 \| fine	44.593 \| good	25.873 \| good	0.961 \| good	30.069 \| good	0.687 \| good
2026-01-21T18:00:00.000Z	69 \| moderate	18.717 \| fine	30.811 \| good	28.249 \| good	0.749 \| good	31.756 \| good	0.689 \| good
2026-01-21T19:00:00.000Z	79 \| moderate	23.764 \| fine	65.001 \| fine	33.17 \| good	0.865 \| good	37.356 \| good	0.756 \| good
2026-01-21T20:00:00.000Z	86 \| moderate	27.806 \| fine	107.164 \| fine	27.984 \| good	0.727 \| good	37.014 \| good	0.656 \| good
2026-01-21T21:00:00.000Z	71 \| moderate	20.278 \| fine	45.606 \| good	29.322 \| good	0.601 \| good	36.271 \| good	0.699 \| good
2026-01-21T22:00:00.000Z	58 \| moderate	12.725 \| fine	34.081 \| good	28.962 \| good	0.607 \| good	34.463 \| good	0.686 \| good
2026-01-21T23:00:00.000Z	56 \| moderate	12.228 \| fine	32.406 \| good	31.924 \| good	0.567 \| good	22.516 \| good	0.605 \| good
2026-01-22T00:00:00.000Z	62 \| moderate	15.488 \| fine	47.6 \| good	29.752 \| good	0.599 \| good	11.15 \| good	0.605 \| good
2026-01-22T01:00:00.000Z	71 \| moderate	19.58 \| fine	65.078 \| fine	34.702 \| good	0.475 \| good	12.507 \| good	0.646 \| good
2026-01-22T02:00:00.000Z	66 \| moderate	16.537 \| fine	55.065 \| fine	33.356 \| good	0.474 \| good	12.562 \| good	0.674 \| good
2026-01-22T03:00:00.000Z	73 \| moderate	21.371 \| fine	53.807 \| good	29.786 \| good	0.424 \| good	16.063 \| good	0.726 \| good
2026-01-22T04:00:00.000Z	75 \| moderate	22.325 \| fine	64.532 \| fine	24.586 \| good	0.452 \| good	15.147 \| good	0.719 \| good
2026-01-22T05:00:00.000Z	84 \| moderate	27.028 \| fine	61.672 \| fine	22.712 \| good	0.638 \| good	14.636 \| good	0.73 \| good
2026-01-22T06:00:00.000Z	107 \| sensitive	37.928 \| moderate	82.379 \| fine	22.44 \| good	0.504 \| good	9.831 \| good	0.817 \| good
2026-01-22T07:00:00.000Z	75 \| moderate	21.634 \| fine	66.441 \| fine	23.642 \| good	0.537 \| good	9.995 \| good	0.902 \| good
2026-01-22T08:00:00.000Z	62 \| moderate	15.199 \| fine	31.015 \| good	17.553 \| good	0.56 \| good	15.027 \| good	0.862 \| good
2026-01-22T09:00:00.000Z	71 \| moderate	20.042 \| fine	41.559 \| good	18.299 \| good	0.53 \| good	9.723 \| good	0.791 \| good
2026-01-22T10:00:00.000Z	71 \| moderate	19.58 \| fine	41.102 \| good	14.8 \| good	0.542 \| good	11.139 \| good	0.712 \| good
2026-01-22T11:00:00.000Z	66 \| moderate	16.855 \| fine	30.209 \| good	17.183 \| good	0.509 \| good	11.057 \| good	0.581 \| good
2026-01-22T12:00:00.000Z	73 \| moderate	20.912 \| fine	55.431 \| fine	26.641 \| good	0.592 \| good	11.316 \| good	0.602 \| good
2026-01-22T13:00:00.000Z	66 \| moderate	16.677 \| fine	36.128 \| good	18.679 \| good	0.593 \| good	10.971 \| good	0.602 \| good
2026-01-22T14:00:00.000Z	67 \| moderate	17.768 \| fine	53.231 \| good	24.685 \| good	0.575 \| good	12.757 \| good	0.763 \| good
2026-01-22T15:00:00.000Z	58 \| moderate	12.508 \| fine	25.985 \| good	23.178 \| good	0.706 \| good	23.44 \| good	0.86 \| good
2026-01-22T16:00:00.000Z	60 \| moderate	14.151 \| fine	35.427 \| good	9.26 \| good	0.802 \| good	22.979 \| good	0.843 \| good
2026-01-22T17:00:00.000Z	54 \| moderate	11.466 \| good	26.097 \| good	18.418 \| good	0.912 \| good	19.82 \| good	0.759 \| good
2026-01-22T18:00:00.000Z	56 \| moderate	11.744 \| good	48.202 \| good	13.254 \| good	0.938 \| good	20.213 \| good	0.626 \| good
2026-01-22T19:00:00.000Z	81 \| moderate	25.39 \| fine	75.136 \| fine	17.832 \| good	0.746 \| good	22.031 \| good	0.692 \| good
2026-01-22T20:00:00.000Z	70 \| moderate	18.721 \| fine	92.669 \| fine	16.653 \| good	0.534 \| good	26.296 \| good	0.564 \| good
2026-01-22T21:00:00.000Z	22 \| good	4.3 \| good	19.709 \| good	18.146 \| good	0.54 \| good	20.638 \| good	0.546 \| good
2026-01-22T22:00:00.000Z	67 \| moderate	18.038 \| fine	46.222 \| good	20.02 \| good	0.645 \| good	28.633 \| good	0.528 \| good
2026-01-22T23:00:00.000Z	60 \| moderate	13.795 \| fine	21.146 \| good	17.32 \| good	0.59 \| good	27.117 \| good	0.587 \| good
2026-01-23T00:00:00.000Z	52 \| moderate	9.67 \| good	39.929 \| good	29.495 \| good	0.441 \| good	29.289 \| good	0.628 \| good
2026-01-23T01:00:00.000Z	64 \| moderate	16.104 \| fine	32.552 \| good	26.522 \| good	0.427 \| good	23.069 \| good	0.514 \| good
2026-01-23T02:00:00.000Z	66 \| moderate	17.015 \| fine	37.944 \| good	23.148 \| good	0.4 \| good	29.41 \| good	0.526 \| good
2026-01-23T03:00:00.000Z	49 \| good	9.142 \| good	40.564 \| good	21.551 \| good	0.328 \| good	13.758 \| good	0.515 \| good
2026-01-23T04:00:00.000Z	81 \| moderate	24.55 \| fine	29.648 \| good	21.057 \| good	0.338 \| good	16.174 \| good	0.461 \| good
2026-01-23T05:00:00.000Z	62 \| moderate	15.379 \| fine	37.179 \| good	17.549 \| good	0.508 \| good	15.886 \| good	0.625 \| good
2026-01-23T06:00:00.000Z	62 \| moderate	15.385 \| fine	37.509 \| good	14.626 \| good	0.421 \| good	17.789 \| good	0.624 \| good
2026-01-23T07:00:00.000Z	56 \| moderate	11.681 \| good	37.12 \| good	14.004 \| good	0.426 \| good	16.557 \| good	0.625 \| good
2026-01-23T08:00:00.000Z	62 \| moderate	14.934 \| fine	41.214 \| good	16.566 \| good	0.542 \| good	15.732 \| good	0.644 \| good
2026-01-23T09:00:00.000Z	58 \| moderate	12.988 \| fine	32.789 \| good	15.9 \| good	0.521 \| good	12.165 \| good	0.726 \| good
2026-01-23T10:00:00.000Z	62 \| moderate	15.462 \| fine	31.062 \| good	10.545 \| good	0.446 \| good	13.031 \| good	0.739 \| good
2026-01-23T11:00:00.000Z	64 \| moderate	15.985 \| fine	39.106 \| good	11.974 \| good	0.502 \| good	11.927 \| good	0.619 \| good
2026-01-23T12:00:00.000Z	81 \| moderate	25.392 \| fine	39.337 \| good	10.757 \| good	0.446 \| good	16.54 \| good	0.542 \| good
2026-01-23T13:00:00.000Z	66 \| moderate	16.978 \| fine	52.349 \| good	5.362 \| good	0.447 \| good	15.581 \| good	0.542 \| good
2026-01-23T14:00:00.000Z	73 \| moderate	20.569 \| fine	52.52 \| good	3.779 \| good	0.425 \| good	19.141 \| good	0.645 \| good
2026-01-23T15:00:00.000Z	79 \| moderate	24.157 \| fine	46.76 \| good	3.52 \| good	0.347 \| good	21.587 \| good	0.643 \| good
2026-01-23T13:00:00.000Z	69 \| moderate	19.033 \| fine	83.869 \| fine	9.296 \| good	2.052 \| good	18.79 \| good	0.279 \| good
2026-01-23T14:00:00.000Z	71 \| moderate	20.046 \| fine	88.505 \| fine	5.062 \| good	2.081 \| good	20.42 \| good	0.292 \| good
2026-01-23T15:00:00.000Z	77 \| moderate	23.065 \| fine	100.853 \| fine	2.911 \| good	2.11 \| good	22.051 \| good	0.304 \| good
2026-01-23T16:00:00.000Z	73 \| moderate	20.652 \| fine	91.159 \| fine	8.338 \| good	2.576 \| good	19.738 \| good	0.273 \| good
2026-01-23T17:00:00.000Z	66 \| moderate	16.741 \| fine	74.589 \| fine	15.266 \| good	3.043 \| good	17.425 \| good	0.242 \| good
2026-01-23T18:00:00.000Z	58 \| moderate	13.342 \| fine	59.902 \| fine	20.59 \| good	3.51 \| good	15.112 \| good	0.211 \| good
2026-01-23T19:00:00.000Z	52 \| moderate	9.681 \| good	43.374 \| good	27.497 \| good	3.946 \| good	15.149 \| good	0.2 \| good
2026-01-23T20:00:00.000Z	58 \| moderate	12.643 \| fine	56.111 \| fine	28.266 \| good	4.383 \| good	15.187 \| good	0.189 \| good
2026-01-23T21:00:00.000Z	62 \| moderate	14.538 \| fine	64.809 \| fine	25.981 \| good	4.82 \| good	15.224 \| good	0.178 \| good
2026-01-23T22:00:00.000Z	56 \| moderate	12.301 \| fine	54.99 \| good	24.776 \| good	5.105 \| good	16.46 \| good	0.179 \| good
2026-01-23T23:00:00.000Z	54 \| moderate	11.454 \| good	50.809 \| good	27.785 \| good	5.39 \| good	17.696 \| good	0.181 \| good
2026-01-24T00:00:00.000Z	33 \| good	5.704 \| good	24.831 \| good	31.148 \| good	5.675 \| good	18.932 \| good	0.182 \| good
2026-01-24T01:00:00.000Z	54 \| moderate	10.791 \| good	47.778 \| good	31.052 \| good	5.469 \| good	20.41 \| good	0.198 \| good
2026-01-24T02:00:00.000Z	54 \| moderate	10.593 \| good	47.072 \| good	28.759 \| good	5.263 \| good	21.888 \| good	0.214 \| good
2026-01-24T03:00:00.000Z	58 \| moderate	12.909 \| fine	57.561 \| fine	23.453 \| good	5.058 \| good	23.366 \| good	0.23 \| good
2026-01-24T04:00:00.000Z	62 \| moderate	15.153 \| fine	67.979 \| fine	19.119 \| good	5.499 \| good	23.681 \| good	0.247 \| good
2026-01-24T05:00:00.000Z	66 \| moderate	16.777 \| fine	74.376 \| fine	14.868 \| good	5.941 \| good	23.995 \| good	0.263 \| good
2026-01-24T06:00:00.000Z	64 \| moderate	15.597 \| fine	69.521 \| fine	13.647 \| good	6.383 \| good	24.31 \| good	0.28 \| good
2026-01-24T07:00:00.000Z	58 \| moderate	13.402 \| fine	59.792 \| fine	15.614 \| good	6.285 \| good	22.906 \| good	0.27 \| good
2026-01-24T08:00:00.000Z	60 \| moderate	14.394 \| fine	64.285 \| fine	15.491 \| good	6.186 \| good	21.503 \| good	0.26 \| good
2026-01-24T09:00:00.000Z	64 \| moderate	15.777 \| fine	70.334 \| fine	14.277 \| good	6.087 \| good	20.1 \| good	0.251 \| good
2026-01-24T10:00:00.000Z	60 \| moderate	13.934 \| fine	62.13 \| fine	13.015 \| good	6.277 \| good	20.269 \| good	0.248 \| good
2026-01-24T11:00:00.000Z	58 \| moderate	13.007 \| fine	58.382 \| fine	11.734 \| good	6.466 \| good	20.438 \| good	0.246 \| good
2026-01-24T12:00:00.000Z	64 \| moderate	15.632 \| fine	69.732 \| fine	9.173 \| good	6.656 \| good	20.608 \| good	0.244 \| good
2026-01-24T13:00:00.000Z	71 \| moderate	19.745 \| fine	87.315 \| fine	7.958 \| good	6.794 \| good	20.444 \| good	0.25 \| good
2026-01-24T14:00:00.000Z	69 \| moderate	19.23 \| fine	85.074 \| fine	7.919 \| good	6.931 \| good	20.281 \| good	0.256 \| good
2026-01-24T15:00:00.000Z	77 \| moderate	22.843 \| fine	100.077 \| fine	8.152 \| good	7.069 \| good	20.118 \| good	0.263 \| good
2026-01-24T16:00:00.000Z	67 \| moderate	17.639 \| fine	78.357 \| fine	15.319 \| good	6.98 \| good	17.857 \| good	0.247 \| good
2026-01-24T17:00:00.000Z	73 \| moderate	20.615 \| fine	90.882 \| fine	23.161 \| good	6.892 \| good	15.596 \| good	0.232 \| good
2026-01-24T18:00:00.000Z	60 \| moderate	14.139 \| fine	62.81 \| fine	28.291 \| good	6.803 \| good	13.335 \| good	0.217 \| good
2026-01-24T19:00:00.000Z	52 \| moderate	10.492 \| good	46.759 \| good	31.206 \| good	6.432 \| good	12.254 \| good	0.212 \| good
2026-01-24T20:00:00.000Z	44 \| good	8.313 \| good	36.747 \| good	31.229 \| good	6.06 \| good	11.172 \| good	0.207 \| good
2026-01-24T21:00:00.000Z	33 \| good	5.681 \| good	24.711 \| good	31.523 \| good	5.689 \| good	10.09 \| good	0.201 \| good
2026-01-24T22:00:00.000Z	31 \| good	3.189 \| good	13.98 \| good	32.503 \| good	5.423 \| good	9.97 \| good	0.198 \| good
2026-01-24T23:00:00.000Z	30 \| good	3.133 \| good	13.252 \| good	32.291 \| good	5.158 \| good	9.85 \| good	0.195 \| good
2026-01-25T00:00:00.000Z	32 \| good	1.717 \| good	7.236 \| good	34.805 \| good	4.893 \| good	9.729 \| good	0.192 \| good
2026-01-25T01:00:00.000Z	31 \| good	1.747 \| good	6.93 \| good	33.757 \| good	4.858 \| good	13.651 \| good	0.209 \| good
2026-01-25T02:00:00.000Z	30 \| good	1.663 \| good	6.909 \| good	31.665 \| good	4.823 \| good	17.573 \| good	0.227 \| good
2026-01-25T03:00:00.000Z	27 \| good	5.334 \| good	23.119 \| good	28.715 \| good	4.788 \| good	21.495 \| good	0.245 \| good
2026-01-25T04:00:00.000Z	38 \| good	7.029 \| good	31.322 \| good	23.647 \| good	4.93 \| good	23.115 \| good	0.264 \| good
2026-01-25T05:00:00.000Z	33 \| good	6.488 \| good	28.911 \| good	20.768 \| good	5.071 \| good	24.736 \| good	0.284 \| good
2026-01-25T06:00:00.000Z	90 \| moderate	29.646 \| fine	31.259 \| good	16.96 \| good	5.242 \| good	26.27 \| good	0.301 \| good
2026-01-25T07:00:00.000Z	27 \| good	5.076 \| good	21.979 \| good	14.757 \| good	4.839 \| good	26.604 \| good	0.301 \| good
2026-01-25T08:00:00.000Z	33 \| good	6.255 \| good	27.214 \| good	15.234 \| good	4.465 \| good	26.851 \| good	0.298 \| good
2026-01-25T09:00:00.000Z	49 \| good	8.7 \| good	38.643 \| good	15.051 \| good	4.091 \| good	27.098 \| good	0.296 \| good
2026-01-25T10:00:00.000Z	56 \| moderate	11.711 \| good	52.15 \| good	16.675 \| good	3.534 \| good	27.645 \| good	0.293 \| good
2026-01-25T11:00:00.000Z	56 \| moderate	12.409 \| fine	55.674 \| fine	15.683 \| good	2.977 \| good	28.191 \| good	0.289 \| good
2026-01-25T12:00:00.000Z	79 \| moderate	23.752 \| fine	24.553 \| good	4.356 \| good	2.463 \| good	29.129 \| good	0.287 \| good

Costa Mesa

Get reliable air quality data to drive your business

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

0.69ppm

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 08:00:00 on 2026-01-22.

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 2026-01-22.

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

As of now, the AQI in Costa Mesa, California is 82, indicating Moderate conditions.

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

Costa Mesa, California air has the highest levels of PM2.5.

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 26.182 μg/m³.

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

The PM₁₀ concentration in Costa Mesa, California is 79.495 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 0.547 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 0.447 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 8.766 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 15.844 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-21T16:00:00.000Z	77 \| moderate	22.938 \| fine	33.76 \| good	25.187 \| good	0.89 \| good	23.83 \| good	0.726 \| good
2026-01-21T17:00:00.000Z	77 \| moderate	23.23 \| fine	44.593 \| good	25.873 \| good	0.961 \| good	30.069 \| good	0.687 \| good
2026-01-21T18:00:00.000Z	69 \| moderate	18.717 \| fine	30.811 \| good	28.249 \| good	0.749 \| good	31.756 \| good	0.689 \| good
2026-01-21T19:00:00.000Z	79 \| moderate	23.764 \| fine	65.001 \| fine	33.17 \| good	0.865 \| good	37.356 \| good	0.756 \| good
2026-01-21T20:00:00.000Z	86 \| moderate	27.806 \| fine	107.164 \| fine	27.984 \| good	0.727 \| good	37.014 \| good	0.656 \| good
2026-01-21T21:00:00.000Z	71 \| moderate	20.278 \| fine	45.606 \| good	29.322 \| good	0.601 \| good	36.271 \| good	0.699 \| good
2026-01-21T22:00:00.000Z	58 \| moderate	12.725 \| fine	34.081 \| good	28.962 \| good	0.607 \| good	34.463 \| good	0.686 \| good
2026-01-21T23:00:00.000Z	56 \| moderate	12.228 \| fine	32.406 \| good	31.924 \| good	0.567 \| good	22.516 \| good	0.605 \| good
2026-01-22T00:00:00.000Z	62 \| moderate	15.488 \| fine	47.6 \| good	29.752 \| good	0.599 \| good	11.15 \| good	0.605 \| good
2026-01-22T01:00:00.000Z	71 \| moderate	19.58 \| fine	65.078 \| fine	34.702 \| good	0.475 \| good	12.507 \| good	0.646 \| good
2026-01-22T02:00:00.000Z	66 \| moderate	16.537 \| fine	55.065 \| fine	33.356 \| good	0.474 \| good	12.562 \| good	0.674 \| good
2026-01-22T03:00:00.000Z	73 \| moderate	21.371 \| fine	53.807 \| good	29.786 \| good	0.424 \| good	16.063 \| good	0.726 \| good
2026-01-22T04:00:00.000Z	75 \| moderate	22.325 \| fine	64.532 \| fine	24.586 \| good	0.452 \| good	15.147 \| good	0.719 \| good
2026-01-22T05:00:00.000Z	84 \| moderate	27.028 \| fine	61.672 \| fine	22.712 \| good	0.638 \| good	14.636 \| good	0.73 \| good
2026-01-22T06:00:00.000Z	107 \| sensitive	37.928 \| moderate	82.379 \| fine	22.44 \| good	0.504 \| good	9.831 \| good	0.817 \| good
2026-01-22T07:00:00.000Z	75 \| moderate	21.634 \| fine	66.441 \| fine	23.642 \| good	0.537 \| good	9.995 \| good	0.902 \| good
2026-01-22T08:00:00.000Z	62 \| moderate	15.199 \| fine	31.015 \| good	17.553 \| good	0.56 \| good	15.027 \| good	0.862 \| good
2026-01-22T09:00:00.000Z	71 \| moderate	20.042 \| fine	41.559 \| good	18.299 \| good	0.53 \| good	9.723 \| good	0.791 \| good
2026-01-22T10:00:00.000Z	71 \| moderate	19.58 \| fine	41.102 \| good	14.8 \| good	0.542 \| good	11.139 \| good	0.712 \| good
2026-01-22T11:00:00.000Z	66 \| moderate	16.855 \| fine	30.209 \| good	17.183 \| good	0.509 \| good	11.057 \| good	0.581 \| good
2026-01-22T12:00:00.000Z	73 \| moderate	20.912 \| fine	55.431 \| fine	26.641 \| good	0.592 \| good	11.316 \| good	0.602 \| good
2026-01-22T13:00:00.000Z	66 \| moderate	16.677 \| fine	36.128 \| good	18.679 \| good	0.593 \| good	10.971 \| good	0.602 \| good
2026-01-22T14:00:00.000Z	67 \| moderate	17.768 \| fine	53.231 \| good	24.685 \| good	0.575 \| good	12.757 \| good	0.763 \| good
2026-01-22T15:00:00.000Z	58 \| moderate	12.508 \| fine	25.985 \| good	23.178 \| good	0.706 \| good	23.44 \| good	0.86 \| good
2026-01-22T16:00:00.000Z	60 \| moderate	14.151 \| fine	35.427 \| good	9.26 \| good	0.802 \| good	22.979 \| good	0.843 \| good
2026-01-22T17:00:00.000Z	54 \| moderate	11.466 \| good	26.097 \| good	18.418 \| good	0.912 \| good	19.82 \| good	0.759 \| good
2026-01-22T18:00:00.000Z	56 \| moderate	11.744 \| good	48.202 \| good	13.254 \| good	0.938 \| good	20.213 \| good	0.626 \| good
2026-01-22T19:00:00.000Z	81 \| moderate	25.39 \| fine	75.136 \| fine	17.832 \| good	0.746 \| good	22.031 \| good	0.692 \| good
2026-01-22T20:00:00.000Z	70 \| moderate	18.721 \| fine	92.669 \| fine	16.653 \| good	0.534 \| good	26.296 \| good	0.564 \| good
2026-01-22T21:00:00.000Z	22 \| good	4.3 \| good	19.709 \| good	18.146 \| good	0.54 \| good	20.638 \| good	0.546 \| good
2026-01-22T22:00:00.000Z	67 \| moderate	18.038 \| fine	46.222 \| good	20.02 \| good	0.645 \| good	28.633 \| good	0.528 \| good
2026-01-22T23:00:00.000Z	60 \| moderate	13.795 \| fine	21.146 \| good	17.32 \| good	0.59 \| good	27.117 \| good	0.587 \| good
2026-01-23T00:00:00.000Z	52 \| moderate	9.67 \| good	39.929 \| good	29.495 \| good	0.441 \| good	29.289 \| good	0.628 \| good
2026-01-23T01:00:00.000Z	64 \| moderate	16.104 \| fine	32.552 \| good	26.522 \| good	0.427 \| good	23.069 \| good	0.514 \| good
2026-01-23T02:00:00.000Z	66 \| moderate	17.015 \| fine	37.944 \| good	23.148 \| good	0.4 \| good	29.41 \| good	0.526 \| good
2026-01-23T03:00:00.000Z	49 \| good	9.142 \| good	40.564 \| good	21.551 \| good	0.328 \| good	13.758 \| good	0.515 \| good
2026-01-23T04:00:00.000Z	81 \| moderate	24.55 \| fine	29.648 \| good	21.057 \| good	0.338 \| good	16.174 \| good	0.461 \| good
2026-01-23T05:00:00.000Z	62 \| moderate	15.379 \| fine	37.179 \| good	17.549 \| good	0.508 \| good	15.886 \| good	0.625 \| good
2026-01-23T06:00:00.000Z	62 \| moderate	15.385 \| fine	37.509 \| good	14.626 \| good	0.421 \| good	17.789 \| good	0.624 \| good
2026-01-23T07:00:00.000Z	56 \| moderate	11.681 \| good	37.12 \| good	14.004 \| good	0.426 \| good	16.557 \| good	0.625 \| good
2026-01-23T08:00:00.000Z	62 \| moderate	14.934 \| fine	41.214 \| good	16.566 \| good	0.542 \| good	15.732 \| good	0.644 \| good
2026-01-23T09:00:00.000Z	58 \| moderate	12.988 \| fine	32.789 \| good	15.9 \| good	0.521 \| good	12.165 \| good	0.726 \| good
2026-01-23T10:00:00.000Z	62 \| moderate	15.462 \| fine	31.062 \| good	10.545 \| good	0.446 \| good	13.031 \| good	0.739 \| good
2026-01-23T11:00:00.000Z	64 \| moderate	15.985 \| fine	39.106 \| good	11.974 \| good	0.502 \| good	11.927 \| good	0.619 \| good
2026-01-23T12:00:00.000Z	81 \| moderate	25.392 \| fine	39.337 \| good	10.757 \| good	0.446 \| good	16.54 \| good	0.542 \| good
2026-01-23T13:00:00.000Z	66 \| moderate	16.978 \| fine	52.349 \| good	5.362 \| good	0.447 \| good	15.581 \| good	0.542 \| good
2026-01-23T14:00:00.000Z	73 \| moderate	20.569 \| fine	52.52 \| good	3.779 \| good	0.425 \| good	19.141 \| good	0.645 \| good
2026-01-23T15:00:00.000Z	79 \| moderate	24.157 \| fine	46.76 \| good	3.52 \| good	0.347 \| good	21.587 \| good	0.643 \| good
2026-01-23T13:00:00.000Z	69 \| moderate	19.033 \| fine	83.869 \| fine	9.296 \| good	2.052 \| good	18.79 \| good	0.279 \| good
2026-01-23T14:00:00.000Z	71 \| moderate	20.046 \| fine	88.505 \| fine	5.062 \| good	2.081 \| good	20.42 \| good	0.292 \| good
2026-01-23T15:00:00.000Z	77 \| moderate	23.065 \| fine	100.853 \| fine	2.911 \| good	2.11 \| good	22.051 \| good	0.304 \| good
2026-01-23T16:00:00.000Z	73 \| moderate	20.652 \| fine	91.159 \| fine	8.338 \| good	2.576 \| good	19.738 \| good	0.273 \| good
2026-01-23T17:00:00.000Z	66 \| moderate	16.741 \| fine	74.589 \| fine	15.266 \| good	3.043 \| good	17.425 \| good	0.242 \| good
2026-01-23T18:00:00.000Z	58 \| moderate	13.342 \| fine	59.902 \| fine	20.59 \| good	3.51 \| good	15.112 \| good	0.211 \| good
2026-01-23T19:00:00.000Z	52 \| moderate	9.681 \| good	43.374 \| good	27.497 \| good	3.946 \| good	15.149 \| good	0.2 \| good
2026-01-23T20:00:00.000Z	58 \| moderate	12.643 \| fine	56.111 \| fine	28.266 \| good	4.383 \| good	15.187 \| good	0.189 \| good
2026-01-23T21:00:00.000Z	62 \| moderate	14.538 \| fine	64.809 \| fine	25.981 \| good	4.82 \| good	15.224 \| good	0.178 \| good
2026-01-23T22:00:00.000Z	56 \| moderate	12.301 \| fine	54.99 \| good	24.776 \| good	5.105 \| good	16.46 \| good	0.179 \| good
2026-01-23T23:00:00.000Z	54 \| moderate	11.454 \| good	50.809 \| good	27.785 \| good	5.39 \| good	17.696 \| good	0.181 \| good
2026-01-24T00:00:00.000Z	33 \| good	5.704 \| good	24.831 \| good	31.148 \| good	5.675 \| good	18.932 \| good	0.182 \| good
2026-01-24T01:00:00.000Z	54 \| moderate	10.791 \| good	47.778 \| good	31.052 \| good	5.469 \| good	20.41 \| good	0.198 \| good
2026-01-24T02:00:00.000Z	54 \| moderate	10.593 \| good	47.072 \| good	28.759 \| good	5.263 \| good	21.888 \| good	0.214 \| good
2026-01-24T03:00:00.000Z	58 \| moderate	12.909 \| fine	57.561 \| fine	23.453 \| good	5.058 \| good	23.366 \| good	0.23 \| good
2026-01-24T04:00:00.000Z	62 \| moderate	15.153 \| fine	67.979 \| fine	19.119 \| good	5.499 \| good	23.681 \| good	0.247 \| good
2026-01-24T05:00:00.000Z	66 \| moderate	16.777 \| fine	74.376 \| fine	14.868 \| good	5.941 \| good	23.995 \| good	0.263 \| good
2026-01-24T06:00:00.000Z	64 \| moderate	15.597 \| fine	69.521 \| fine	13.647 \| good	6.383 \| good	24.31 \| good	0.28 \| good
2026-01-24T07:00:00.000Z	58 \| moderate	13.402 \| fine	59.792 \| fine	15.614 \| good	6.285 \| good	22.906 \| good	0.27 \| good
2026-01-24T08:00:00.000Z	60 \| moderate	14.394 \| fine	64.285 \| fine	15.491 \| good	6.186 \| good	21.503 \| good	0.26 \| good
2026-01-24T09:00:00.000Z	64 \| moderate	15.777 \| fine	70.334 \| fine	14.277 \| good	6.087 \| good	20.1 \| good	0.251 \| good
2026-01-24T10:00:00.000Z	60 \| moderate	13.934 \| fine	62.13 \| fine	13.015 \| good	6.277 \| good	20.269 \| good	0.248 \| good
2026-01-24T11:00:00.000Z	58 \| moderate	13.007 \| fine	58.382 \| fine	11.734 \| good	6.466 \| good	20.438 \| good	0.246 \| good
2026-01-24T12:00:00.000Z	64 \| moderate	15.632 \| fine	69.732 \| fine	9.173 \| good	6.656 \| good	20.608 \| good	0.244 \| good
2026-01-24T13:00:00.000Z	71 \| moderate	19.745 \| fine	87.315 \| fine	7.958 \| good	6.794 \| good	20.444 \| good	0.25 \| good
2026-01-24T14:00:00.000Z	69 \| moderate	19.23 \| fine	85.074 \| fine	7.919 \| good	6.931 \| good	20.281 \| good	0.256 \| good
2026-01-24T15:00:00.000Z	77 \| moderate	22.843 \| fine	100.077 \| fine	8.152 \| good	7.069 \| good	20.118 \| good	0.263 \| good
2026-01-24T16:00:00.000Z	67 \| moderate	17.639 \| fine	78.357 \| fine	15.319 \| good	6.98 \| good	17.857 \| good	0.247 \| good
2026-01-24T17:00:00.000Z	73 \| moderate	20.615 \| fine	90.882 \| fine	23.161 \| good	6.892 \| good	15.596 \| good	0.232 \| good
2026-01-24T18:00:00.000Z	60 \| moderate	14.139 \| fine	62.81 \| fine	28.291 \| good	6.803 \| good	13.335 \| good	0.217 \| good
2026-01-24T19:00:00.000Z	52 \| moderate	10.492 \| good	46.759 \| good	31.206 \| good	6.432 \| good	12.254 \| good	0.212 \| good
2026-01-24T20:00:00.000Z	44 \| good	8.313 \| good	36.747 \| good	31.229 \| good	6.06 \| good	11.172 \| good	0.207 \| good
2026-01-24T21:00:00.000Z	33 \| good	5.681 \| good	24.711 \| good	31.523 \| good	5.689 \| good	10.09 \| good	0.201 \| good
2026-01-24T22:00:00.000Z	31 \| good	3.189 \| good	13.98 \| good	32.503 \| good	5.423 \| good	9.97 \| good	0.198 \| good
2026-01-24T23:00:00.000Z	30 \| good	3.133 \| good	13.252 \| good	32.291 \| good	5.158 \| good	9.85 \| good	0.195 \| good
2026-01-25T00:00:00.000Z	32 \| good	1.717 \| good	7.236 \| good	34.805 \| good	4.893 \| good	9.729 \| good	0.192 \| good
2026-01-25T01:00:00.000Z	31 \| good	1.747 \| good	6.93 \| good	33.757 \| good	4.858 \| good	13.651 \| good	0.209 \| good
2026-01-25T02:00:00.000Z	30 \| good	1.663 \| good	6.909 \| good	31.665 \| good	4.823 \| good	17.573 \| good	0.227 \| good
2026-01-25T03:00:00.000Z	27 \| good	5.334 \| good	23.119 \| good	28.715 \| good	4.788 \| good	21.495 \| good	0.245 \| good
2026-01-25T04:00:00.000Z	38 \| good	7.029 \| good	31.322 \| good	23.647 \| good	4.93 \| good	23.115 \| good	0.264 \| good
2026-01-25T05:00:00.000Z	33 \| good	6.488 \| good	28.911 \| good	20.768 \| good	5.071 \| good	24.736 \| good	0.284 \| good
2026-01-25T06:00:00.000Z	90 \| moderate	29.646 \| fine	31.259 \| good	16.96 \| good	5.242 \| good	26.27 \| good	0.301 \| good
2026-01-25T07:00:00.000Z	27 \| good	5.076 \| good	21.979 \| good	14.757 \| good	4.839 \| good	26.604 \| good	0.301 \| good
2026-01-25T08:00:00.000Z	33 \| good	6.255 \| good	27.214 \| good	15.234 \| good	4.465 \| good	26.851 \| good	0.298 \| good
2026-01-25T09:00:00.000Z	49 \| good	8.7 \| good	38.643 \| good	15.051 \| good	4.091 \| good	27.098 \| good	0.296 \| good
2026-01-25T10:00:00.000Z	56 \| moderate	11.711 \| good	52.15 \| good	16.675 \| good	3.534 \| good	27.645 \| good	0.293 \| good
2026-01-25T11:00:00.000Z	56 \| moderate	12.409 \| fine	55.674 \| fine	15.683 \| good	2.977 \| good	28.191 \| good	0.289 \| good
2026-01-25T12:00:00.000Z	79 \| moderate	23.752 \| fine	24.553 \| good	4.356 \| good	2.463 \| good	29.129 \| good	0.287 \| 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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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?

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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?