What is the current concentration of PM10 in San Luis Obispo, California?

The current PM10 concentration at San Luis Obispo, California is 10.031 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in San Luis Obispo, California?

The current sulfur dioxide (SO2) concentration at San Luis Obispo, California is 0.734 ppb.

What is the current concentration of ozone (O3) in San Luis Obispo, California?

The current ozone (O3) concentration at San Luis Obispo, California is 23.528 ppm.

What is the current concentration of nitrogen dioxide (NO2) in San Luis Obispo, California?

The current nitrogen dioxide (NO2) concentration at San Luis Obispo, California is 2.951 ppb.

San Luis Obispo, California live air quality index now

Q: What is the current concentration of PM2.5 in San Luis Obispo, California?

The current PM2.5 concentration at San Luis Obispo, California is 4.065 μg/m3.

Stay updated with real-time air quality in San Luis Obispo, 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

San Luis Obispo, California

Last updated: ... (Local time)

Major air pollutants in San Luis Obispo, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.97 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

11.21 μg/m³

155

255

425

605+

Ozone (O₃)

28.70 ppb

201

201+

Sulfur Dioxide (SO₂)

0.55 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

1.55 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

San Luis Obispo, California

Get Live Pollen Counts

San Luis Obispo, California

Scroll To Air Quality Map

Track live San Luis Obispo, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-22T00:00:00.000Z	49 \| good	9.414 \| good	13.451 \| good	27.257 \| good	0.699 \| good	2.777 \| good	0.411 \| good
2026-01-22T01:00:00.000Z	52 \| moderate	10.084 \| good	16.233 \| good	25.311 \| good	0.705 \| good	7.152 \| good	0.457 \| good
2026-01-22T02:00:00.000Z	44 \| good	8.047 \| good	19.164 \| good	22.944 \| good	0.65 \| good	6.546 \| good	0.465 \| good
2026-01-22T03:00:00.000Z	44 \| good	8.474 \| good	19.166 \| good	20.978 \| good	0.595 \| good	7.436 \| good	0.496 \| good
2026-01-22T04:00:00.000Z	49 \| good	8.725 \| good	17.215 \| good	22.057 \| good	0.624 \| good	8.799 \| good	0.458 \| good
2026-01-22T05:00:00.000Z	49 \| good	9.316 \| good	17.373 \| good	18.85 \| good	0.574 \| good	8.444 \| good	0.481 \| good
2026-01-22T06:00:00.000Z	49 \| good	9.206 \| good	17.128 \| good	17.051 \| good	0.558 \| good	6.813 \| good	0.52 \| good
2026-01-22T07:00:00.000Z	49 \| good	8.625 \| good	16.33 \| good	14.637 \| good	0.578 \| good	7.651 \| good	0.552 \| good
2026-01-22T08:00:00.000Z	44 \| good	7.88 \| good	14.763 \| good	16.699 \| good	0.682 \| good	6.871 \| good	0.551 \| good
2026-01-22T09:00:00.000Z	49 \| good	8.896 \| good	13.955 \| good	17.243 \| good	0.637 \| good	5.538 \| good	0.573 \| good
2026-01-22T10:00:00.000Z	49 \| good	8.98 \| good	12.503 \| good	16.044 \| good	0.619 \| good	4.623 \| good	0.535 \| good
2026-01-22T11:00:00.000Z	44 \| good	8.158 \| good	12.451 \| good	15.24 \| good	0.683 \| good	4.498 \| good	0.48 \| good
2026-01-22T12:00:00.000Z	38 \| good	7.381 \| good	11.448 \| good	13.22 \| good	0.572 \| good	5.962 \| good	0.442 \| good
2026-01-22T13:00:00.000Z	38 \| good	7.342 \| good	11.482 \| good	13.05 \| good	0.69 \| good	5.993 \| good	0.388 \| good
2026-01-22T14:00:00.000Z	38 \| good	7.391 \| good	12.439 \| good	14.389 \| good	0.505 \| good	5.984 \| good	0.45 \| good
2026-01-22T15:00:00.000Z	44 \| good	7.708 \| good	12.187 \| good	11.49 \| good	0.523 \| good	6.684 \| good	0.518 \| good
2026-01-22T16:00:00.000Z	44 \| good	7.752 \| good	12.413 \| good	10.407 \| good	0.65 \| good	7.928 \| good	0.643 \| good
2026-01-22T17:00:00.000Z	44 \| good	7.84 \| good	26.629 \| good	13.104 \| good	0.704 \| good	7.085 \| good	0.703 \| good
2026-01-22T18:00:00.000Z	49 \| good	8.712 \| good	19.843 \| good	15.062 \| good	0.771 \| good	6.002 \| good	0.75 \| good
2026-01-22T19:00:00.000Z	44 \| good	8.01 \| good	16.139 \| good	20.977 \| good	0.753 \| good	4.993 \| good	0.566 \| good
2026-01-22T20:00:00.000Z	38 \| good	7.268 \| good	11.347 \| good	22.222 \| good	0.755 \| good	4.26 \| good	0.442 \| good
2026-01-22T21:00:00.000Z	44 \| good	7.577 \| good	9.393 \| good	24.296 \| good	0.69 \| good	2.685 \| good	0.36 \| good
2026-01-22T22:00:00.000Z	44 \| good	8.084 \| good	12.315 \| good	28.763 \| good	0.638 \| good	2.763 \| good	0.344 \| good
2026-01-22T23:00:00.000Z	44 \| good	7.525 \| good	13.043 \| good	28.088 \| good	0.826 \| good	2.964 \| good	0.317 \| good
2026-01-23T00:00:00.000Z	38 \| good	6.939 \| good	13.115 \| good	28.389 \| good	0.601 \| good	4.529 \| good	0.317 \| good
2026-01-23T01:00:00.000Z	38 \| good	7.25 \| good	13.79 \| good	28.172 \| good	0.535 \| good	2.844 \| good	0.353 \| good
2026-01-23T02:00:00.000Z	44 \| good	7.804 \| good	14.067 \| good	25.222 \| good	0.519 \| good	4.138 \| good	0.405 \| good
2026-01-23T03:00:00.000Z	38 \| good	7.484 \| good	13.48 \| good	21.957 \| good	0.502 \| good	7.159 \| good	0.418 \| good
2026-01-23T04:00:00.000Z	44 \| good	7.666 \| good	12.398 \| good	19.209 \| good	0.417 \| good	9.175 \| good	0.562 \| good
2026-01-23T05:00:00.000Z	38 \| good	7.374 \| good	11.957 \| good	16.774 \| good	0.414 \| good	9.18 \| good	0.624 \| good
2026-01-23T06:00:00.000Z	44 \| good	8.389 \| good	10.708 \| good	17.5 \| good	0.331 \| good	7.575 \| good	0.508 \| good
2026-01-23T07:00:00.000Z	44 \| good	8.161 \| good	10.593 \| good	15.794 \| good	0.33 \| good	7.21 \| good	0.484 \| good
2026-01-23T08:00:00.000Z	49 \| good	8.821 \| good	10.588 \| good	14.036 \| good	0.282 \| good	5.258 \| good	0.451 \| good
2026-01-23T09:00:00.000Z	44 \| good	8.089 \| good	10.864 \| good	14.433 \| good	0.37 \| good	4.697 \| good	0.544 \| good
2026-01-23T10:00:00.000Z	13 \| good	1.786 \| good	8.752 \| good	14.119 \| good	0.457 \| good	4.374 \| good	0.482 \| good
2026-01-23T11:00:00.000Z	13 \| good	1.565 \| good	6.544 \| good	14.213 \| good	0.422 \| good	4.373 \| good	0.451 \| good
2026-01-23T12:00:00.000Z	11 \| good	1.617 \| good	7.43 \| good	12.234 \| good	0.405 \| good	3.577 \| good	0.436 \| good
2026-01-23T13:00:00.000Z	15 \| good	1.562 \| good	7.333 \| good	16.342 \| good	0.736 \| good	3.812 \| good	0.372 \| good
2026-01-23T14:00:00.000Z	10 \| good	1.39 \| good	5.491 \| good	10.594 \| good	0.862 \| good	4.545 \| good	0.368 \| good
2026-01-23T15:00:00.000Z	10 \| good	1.021 \| good	4.132 \| good	10.618 \| good	0.725 \| good	7.229 \| good	0.324 \| good
2026-01-23T16:00:00.000Z	9 \| good	1.255 \| good	5.281 \| good	10.157 \| good	0.589 \| good	6.582 \| good	0.389 \| good
2026-01-23T17:00:00.000Z	38 \| good	6.764 \| good	8.526 \| good	14.982 \| good	0.539 \| good	6.098 \| good	0.52 \| good
2026-01-23T18:00:00.000Z	38 \| good	6.664 \| good	7.987 \| good	16.801 \| good	0.553 \| good	4.705 \| good	0.445 \| good
2026-01-23T19:00:00.000Z	33 \| good	5.514 \| good	8.077 \| good	20.703 \| good	0.735 \| good	4.458 \| good	0.357 \| good
2026-01-23T20:00:00.000Z	22 \| good	4.065 \| good	10.031 \| good	23.528 \| good	0.734 \| good	2.951 \| good	0.309 \| good
2026-01-23T21:00:00.000Z	24 \| good	3.465 \| good	8.934 \| good	25.521 \| good	0.697 \| good	2.177 \| good	0.293 \| good
2026-01-23T22:00:00.000Z	33 \| good	6.19 \| good	9.055 \| good	27.681 \| good	0.582 \| good	1.817 \| good	0.285 \| good
2026-01-23T23:00:00.000Z	38 \| good	6.966 \| good	11.206 \| good	28.698 \| good	0.551 \| good	1.549 \| good	0.262 \| good
2026-01-23T23:00:00.000Z	38 \| good	6.966 \| good	11.206 \| good	28.698 \| good	0.551 \| good	1.549 \| good	0.262 \| good
2026-01-23T22:00:00.000Z	35 \| good	6.098 \| good	26.807 \| good	37.642 \| good	0.932 \| good	1.36 \| good	0.185 \| good
2026-01-23T23:00:00.000Z	38 \| good	6.887 \| good	30.534 \| good	36.644 \| good	0.853 \| good	1.334 \| good	0.183 \| good
2026-01-24T00:00:00.000Z	52 \| moderate	9.695 \| good	42.867 \| good	35.131 \| good	0.774 \| good	1.308 \| good	0.182 \| good
2026-01-24T01:00:00.000Z	52 \| moderate	10.335 \| good	45.747 \| good	31.038 \| good	0.692 \| good	2.725 \| good	0.195 \| good
2026-01-24T02:00:00.000Z	58 \| moderate	13.021 \| fine	58.134 \| fine	28.215 \| good	0.61 \| good	4.143 \| good	0.209 \| good
2026-01-24T03:00:00.000Z	54 \| moderate	10.76 \| good	47.477 \| good	29.603 \| good	0.528 \| good	5.56 \| good	0.222 \| good
2026-01-24T04:00:00.000Z	54 \| moderate	10.756 \| good	47.609 \| good	26.611 \| good	0.501 \| good	5.91 \| good	0.227 \| good
2026-01-24T05:00:00.000Z	54 \| moderate	10.5 \| good	46.544 \| good	26.557 \| good	0.473 \| good	6.259 \| good	0.232 \| good
2026-01-24T06:00:00.000Z	49 \| good	9.481 \| good	42.418 \| good	25.704 \| good	0.446 \| good	6.609 \| good	0.237 \| good
2026-01-24T07:00:00.000Z	49 \| good	9.064 \| good	39.799 \| good	24.114 \| good	0.415 \| good	5.99 \| good	0.233 \| good
2026-01-24T08:00:00.000Z	52 \| moderate	10.083 \| good	44.699 \| good	23.358 \| good	0.384 \| good	5.372 \| good	0.229 \| good
2026-01-24T09:00:00.000Z	49 \| good	8.833 \| good	39.143 \| good	23.35 \| good	0.352 \| good	4.753 \| good	0.226 \| good
2026-01-24T10:00:00.000Z	38 \| good	7.303 \| good	32.031 \| good	23.21 \| good	0.317 \| good	3.882 \| good	0.218 \| good
2026-01-24T11:00:00.000Z	38 \| good	7.279 \| good	31.858 \| good	22.111 \| good	0.281 \| good	3.012 \| good	0.21 \| good
2026-01-24T12:00:00.000Z	38 \| good	7.405 \| good	32.809 \| good	20.865 \| good	0.245 \| good	2.141 \| good	0.203 \| good
2026-01-24T13:00:00.000Z	38 \| good	7.489 \| good	32.982 \| good	18.524 \| good	0.235 \| good	2.098 \| good	0.201 \| good
2026-01-24T14:00:00.000Z	44 \| good	8.362 \| good	36.608 \| good	17.797 \| good	0.224 \| good	2.055 \| good	0.199 \| good
2026-01-24T15:00:00.000Z	52 \| moderate	9.504 \| good	42.02 \| good	15.927 \| good	0.214 \| good	2.012 \| good	0.197 \| good
2026-01-24T16:00:00.000Z	49 \| good	8.751 \| good	38.934 \| good	18.01 \| good	0.255 \| good	1.82 \| good	0.194 \| good
2026-01-24T17:00:00.000Z	56 \| moderate	11.901 \| good	53.202 \| good	23.814 \| good	0.296 \| good	1.628 \| good	0.191 \| good
2026-01-24T18:00:00.000Z	56 \| moderate	11.969 \| good	53.688 \| good	28.452 \| good	0.336 \| good	1.436 \| good	0.188 \| good
2026-01-24T19:00:00.000Z	44 \| good	8.276 \| good	36.363 \| good	33.387 \| good	0.486 \| good	1.271 \| good	0.186 \| good
2026-01-24T20:00:00.000Z	49 \| good	9.47 \| good	42.379 \| good	35.232 \| good	0.636 \| good	1.107 \| good	0.183 \| good
2026-01-24T21:00:00.000Z	44 \| good	8.034 \| good	35.343 \| good	36.232 \| good	0.785 \| good	0.942 \| good	0.181 \| good
2026-01-24T22:00:00.000Z	34 \| good	5.214 \| good	22.377 \| good	37.076 \| good	0.813 \| good	1.05 \| good	0.184 \| good
2026-01-24T23:00:00.000Z	38 \| good	7.309 \| good	32.296 \| good	36.758 \| good	0.84 \| good	1.157 \| good	0.188 \| good
2026-01-25T00:00:00.000Z	54 \| moderate	10.666 \| good	47.326 \| good	34.92 \| good	0.867 \| good	1.265 \| good	0.191 \| good
2026-01-25T01:00:00.000Z	44 \| good	8.295 \| good	36.399 \| good	28.729 \| good	0.862 \| good	2.705 \| good	0.208 \| good
2026-01-25T02:00:00.000Z	56 \| moderate	11.686 \| good	51.8 \| good	25.317 \| good	0.857 \| good	4.146 \| good	0.224 \| good
2026-01-25T03:00:00.000Z	56 \| moderate	12.313 \| fine	55.409 \| fine	22.84 \| good	0.852 \| good	5.586 \| good	0.241 \| good
2026-01-25T04:00:00.000Z	56 \| moderate	11.931 \| good	53.084 \| good	21.403 \| good	0.823 \| good	6.576 \| good	0.256 \| good
2026-01-25T05:00:00.000Z	56 \| moderate	11.987 \| good	53.409 \| good	18.873 \| good	0.794 \| good	7.566 \| good	0.271 \| good
2026-01-25T06:00:00.000Z	52 \| moderate	10.295 \| good	45.631 \| good	18.422 \| good	0.764 \| good	8.556 \| good	0.287 \| good
2026-01-25T07:00:00.000Z	52 \| moderate	10.077 \| good	44.673 \| good	19.367 \| good	0.72 \| good	8.049 \| good	0.288 \| good
2026-01-25T08:00:00.000Z	54 \| moderate	10.711 \| good	47.703 \| good	19.676 \| good	0.675 \| good	7.543 \| good	0.29 \| good
2026-01-25T09:00:00.000Z	52 \| moderate	10.191 \| good	44.887 \| good	19.738 \| good	0.631 \| good	7.036 \| good	0.291 \| good
2026-01-25T10:00:00.000Z	49 \| good	8.766 \| good	38.597 \| good	19.262 \| good	0.629 \| good	6.142 \| good	0.283 \| good
2026-01-25T11:00:00.000Z	44 \| good	8.234 \| good	36.485 \| good	19.046 \| good	0.628 \| good	5.249 \| good	0.275 \| good
2026-01-25T12:00:00.000Z	49 \| good	9.05 \| good	39.757 \| good	18.921 \| good	0.626 \| good	4.355 \| good	0.266 \| good
2026-01-25T13:00:00.000Z	49 \| good	9.179 \| good	40.571 \| good	18.826 \| good	0.638 \| good	4.203 \| good	0.262 \| good
2026-01-25T14:00:00.000Z	58 \| moderate	13.069 \| fine	59.041 \| fine	18.361 \| good	0.649 \| good	4.05 \| good	0.258 \| good
2026-01-25T15:00:00.000Z	58 \| moderate	12.622 \| fine	56.642 \| fine	18.281 \| good	0.66 \| good	3.897 \| good	0.254 \| good
2026-01-25T16:00:00.000Z	58 \| moderate	12.779 \| fine	57.324 \| fine	16.803 \| good	0.674 \| good	3.706 \| good	0.255 \| good
2026-01-25T17:00:00.000Z	54 \| moderate	10.963 \| good	48.452 \| good	20.612 \| good	0.689 \| good	3.514 \| good	0.256 \| good
2026-01-25T18:00:00.000Z	49 \| good	8.82 \| good	38.882 \| good	25.109 \| good	0.703 \| good	3.322 \| good	0.256 \| good
2026-01-25T19:00:00.000Z	38 \| good	7.038 \| good	31.264 \| good	30.603 \| good	0.699 \| good	2.967 \| good	0.226 \| good
2026-01-25T20:00:00.000Z	54 \| moderate	10.743 \| good	47.728 \| good	33.259 \| good	0.696 \| good	2.612 \| good	0.197 \| good
2026-01-25T21:00:00.000Z	49 \| good	9.453 \| good	42.059 \| good	33.904 \| good	0.692 \| good	2.257 \| good	0.167 \| good

San Luis Obispo

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San Luis Obispo, California air quality map: Track AQI near you

0.28ppm

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 San Luis Obispo, California updated?

The air quality for San Luis Obispo, California is updated every hour.

When was the worst air quality at San Luis Obispo, California in the last 24 hrs?

The worst air quality in San Luis Obispo, California in the last 24 hours was observed at 08:00:00 on 2026-01-23.

When was the best air quality at San Luis Obispo, California in the last 24 hrs?

In the last 24 hrs, the best air quality in San Luis Obispo, California was observed at 04:00:00 on 2026-01-23.

What is the current air quality in San Luis Obispo, California?

The current air quality in San Luis Obispo, California is 22, categorized as Good based on real-time data.

What pollutant is the most common in San Luis Obispo, California?

The most common pollutant in San Luis Obispo, California is O3.

What should I do if the air quality in San Luis Obispo, California is poor?

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

What is the current concentration of PM_2.5 in San Luis Obispo, California?

The current PM_2.5 concentration at San Luis Obispo, California is 4.065 μg/m³.

What is the current concentration of PM₁₀ in San Luis Obispo, California?

The current PM₁₀ concentration at San Luis Obispo, California is 10.031 μg/m³.

What is the current concentration of carbon monoxide (CO) in San Luis Obispo, California?

The current carbon monoxide (CO) concentration at San Luis Obispo, California is 0.309 ppm.

What is the current concentration of sulfur dioxide (SO₂) in San Luis Obispo, California?

The current sulfur dioxide (SO₂) concentration at San Luis Obispo, California is 0.734 ppb.

What is the current concentration of ozone (O₃) in San Luis Obispo, California?

The current ozone (O₃) concentration at San Luis Obispo, California is 23.528 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in San Luis Obispo, California?

The current nitrogen dioxide (NO₂) concentration at San Luis Obispo, California is 2.951 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-22T00:00:00.000Z	49 \| good	9.414 \| good	13.451 \| good	27.257 \| good	0.699 \| good	2.777 \| good	0.411 \| good
2026-01-22T01:00:00.000Z	52 \| moderate	10.084 \| good	16.233 \| good	25.311 \| good	0.705 \| good	7.152 \| good	0.457 \| good
2026-01-22T02:00:00.000Z	44 \| good	8.047 \| good	19.164 \| good	22.944 \| good	0.65 \| good	6.546 \| good	0.465 \| good
2026-01-22T03:00:00.000Z	44 \| good	8.474 \| good	19.166 \| good	20.978 \| good	0.595 \| good	7.436 \| good	0.496 \| good
2026-01-22T04:00:00.000Z	49 \| good	8.725 \| good	17.215 \| good	22.057 \| good	0.624 \| good	8.799 \| good	0.458 \| good
2026-01-22T05:00:00.000Z	49 \| good	9.316 \| good	17.373 \| good	18.85 \| good	0.574 \| good	8.444 \| good	0.481 \| good
2026-01-22T06:00:00.000Z	49 \| good	9.206 \| good	17.128 \| good	17.051 \| good	0.558 \| good	6.813 \| good	0.52 \| good
2026-01-22T07:00:00.000Z	49 \| good	8.625 \| good	16.33 \| good	14.637 \| good	0.578 \| good	7.651 \| good	0.552 \| good
2026-01-22T08:00:00.000Z	44 \| good	7.88 \| good	14.763 \| good	16.699 \| good	0.682 \| good	6.871 \| good	0.551 \| good
2026-01-22T09:00:00.000Z	49 \| good	8.896 \| good	13.955 \| good	17.243 \| good	0.637 \| good	5.538 \| good	0.573 \| good
2026-01-22T10:00:00.000Z	49 \| good	8.98 \| good	12.503 \| good	16.044 \| good	0.619 \| good	4.623 \| good	0.535 \| good
2026-01-22T11:00:00.000Z	44 \| good	8.158 \| good	12.451 \| good	15.24 \| good	0.683 \| good	4.498 \| good	0.48 \| good
2026-01-22T12:00:00.000Z	38 \| good	7.381 \| good	11.448 \| good	13.22 \| good	0.572 \| good	5.962 \| good	0.442 \| good
2026-01-22T13:00:00.000Z	38 \| good	7.342 \| good	11.482 \| good	13.05 \| good	0.69 \| good	5.993 \| good	0.388 \| good
2026-01-22T14:00:00.000Z	38 \| good	7.391 \| good	12.439 \| good	14.389 \| good	0.505 \| good	5.984 \| good	0.45 \| good
2026-01-22T15:00:00.000Z	44 \| good	7.708 \| good	12.187 \| good	11.49 \| good	0.523 \| good	6.684 \| good	0.518 \| good
2026-01-22T16:00:00.000Z	44 \| good	7.752 \| good	12.413 \| good	10.407 \| good	0.65 \| good	7.928 \| good	0.643 \| good
2026-01-22T17:00:00.000Z	44 \| good	7.84 \| good	26.629 \| good	13.104 \| good	0.704 \| good	7.085 \| good	0.703 \| good
2026-01-22T18:00:00.000Z	49 \| good	8.712 \| good	19.843 \| good	15.062 \| good	0.771 \| good	6.002 \| good	0.75 \| good
2026-01-22T19:00:00.000Z	44 \| good	8.01 \| good	16.139 \| good	20.977 \| good	0.753 \| good	4.993 \| good	0.566 \| good
2026-01-22T20:00:00.000Z	38 \| good	7.268 \| good	11.347 \| good	22.222 \| good	0.755 \| good	4.26 \| good	0.442 \| good
2026-01-22T21:00:00.000Z	44 \| good	7.577 \| good	9.393 \| good	24.296 \| good	0.69 \| good	2.685 \| good	0.36 \| good
2026-01-22T22:00:00.000Z	44 \| good	8.084 \| good	12.315 \| good	28.763 \| good	0.638 \| good	2.763 \| good	0.344 \| good
2026-01-22T23:00:00.000Z	44 \| good	7.525 \| good	13.043 \| good	28.088 \| good	0.826 \| good	2.964 \| good	0.317 \| good
2026-01-23T00:00:00.000Z	38 \| good	6.939 \| good	13.115 \| good	28.389 \| good	0.601 \| good	4.529 \| good	0.317 \| good
2026-01-23T01:00:00.000Z	38 \| good	7.25 \| good	13.79 \| good	28.172 \| good	0.535 \| good	2.844 \| good	0.353 \| good
2026-01-23T02:00:00.000Z	44 \| good	7.804 \| good	14.067 \| good	25.222 \| good	0.519 \| good	4.138 \| good	0.405 \| good
2026-01-23T03:00:00.000Z	38 \| good	7.484 \| good	13.48 \| good	21.957 \| good	0.502 \| good	7.159 \| good	0.418 \| good
2026-01-23T04:00:00.000Z	44 \| good	7.666 \| good	12.398 \| good	19.209 \| good	0.417 \| good	9.175 \| good	0.562 \| good
2026-01-23T05:00:00.000Z	38 \| good	7.374 \| good	11.957 \| good	16.774 \| good	0.414 \| good	9.18 \| good	0.624 \| good
2026-01-23T06:00:00.000Z	44 \| good	8.389 \| good	10.708 \| good	17.5 \| good	0.331 \| good	7.575 \| good	0.508 \| good
2026-01-23T07:00:00.000Z	44 \| good	8.161 \| good	10.593 \| good	15.794 \| good	0.33 \| good	7.21 \| good	0.484 \| good
2026-01-23T08:00:00.000Z	49 \| good	8.821 \| good	10.588 \| good	14.036 \| good	0.282 \| good	5.258 \| good	0.451 \| good
2026-01-23T09:00:00.000Z	44 \| good	8.089 \| good	10.864 \| good	14.433 \| good	0.37 \| good	4.697 \| good	0.544 \| good
2026-01-23T10:00:00.000Z	13 \| good	1.786 \| good	8.752 \| good	14.119 \| good	0.457 \| good	4.374 \| good	0.482 \| good
2026-01-23T11:00:00.000Z	13 \| good	1.565 \| good	6.544 \| good	14.213 \| good	0.422 \| good	4.373 \| good	0.451 \| good
2026-01-23T12:00:00.000Z	11 \| good	1.617 \| good	7.43 \| good	12.234 \| good	0.405 \| good	3.577 \| good	0.436 \| good
2026-01-23T13:00:00.000Z	15 \| good	1.562 \| good	7.333 \| good	16.342 \| good	0.736 \| good	3.812 \| good	0.372 \| good
2026-01-23T14:00:00.000Z	10 \| good	1.39 \| good	5.491 \| good	10.594 \| good	0.862 \| good	4.545 \| good	0.368 \| good
2026-01-23T15:00:00.000Z	10 \| good	1.021 \| good	4.132 \| good	10.618 \| good	0.725 \| good	7.229 \| good	0.324 \| good
2026-01-23T16:00:00.000Z	9 \| good	1.255 \| good	5.281 \| good	10.157 \| good	0.589 \| good	6.582 \| good	0.389 \| good
2026-01-23T17:00:00.000Z	38 \| good	6.764 \| good	8.526 \| good	14.982 \| good	0.539 \| good	6.098 \| good	0.52 \| good
2026-01-23T18:00:00.000Z	38 \| good	6.664 \| good	7.987 \| good	16.801 \| good	0.553 \| good	4.705 \| good	0.445 \| good
2026-01-23T19:00:00.000Z	33 \| good	5.514 \| good	8.077 \| good	20.703 \| good	0.735 \| good	4.458 \| good	0.357 \| good
2026-01-23T20:00:00.000Z	22 \| good	4.065 \| good	10.031 \| good	23.528 \| good	0.734 \| good	2.951 \| good	0.309 \| good
2026-01-23T21:00:00.000Z	24 \| good	3.465 \| good	8.934 \| good	25.521 \| good	0.697 \| good	2.177 \| good	0.293 \| good
2026-01-23T22:00:00.000Z	33 \| good	6.19 \| good	9.055 \| good	27.681 \| good	0.582 \| good	1.817 \| good	0.285 \| good
2026-01-23T23:00:00.000Z	38 \| good	6.966 \| good	11.206 \| good	28.698 \| good	0.551 \| good	1.549 \| good	0.262 \| good
2026-01-23T23:00:00.000Z	38 \| good	6.966 \| good	11.206 \| good	28.698 \| good	0.551 \| good	1.549 \| good	0.262 \| good
2026-01-23T22:00:00.000Z	35 \| good	6.098 \| good	26.807 \| good	37.642 \| good	0.932 \| good	1.36 \| good	0.185 \| good
2026-01-23T23:00:00.000Z	38 \| good	6.887 \| good	30.534 \| good	36.644 \| good	0.853 \| good	1.334 \| good	0.183 \| good
2026-01-24T00:00:00.000Z	52 \| moderate	9.695 \| good	42.867 \| good	35.131 \| good	0.774 \| good	1.308 \| good	0.182 \| good
2026-01-24T01:00:00.000Z	52 \| moderate	10.335 \| good	45.747 \| good	31.038 \| good	0.692 \| good	2.725 \| good	0.195 \| good
2026-01-24T02:00:00.000Z	58 \| moderate	13.021 \| fine	58.134 \| fine	28.215 \| good	0.61 \| good	4.143 \| good	0.209 \| good
2026-01-24T03:00:00.000Z	54 \| moderate	10.76 \| good	47.477 \| good	29.603 \| good	0.528 \| good	5.56 \| good	0.222 \| good
2026-01-24T04:00:00.000Z	54 \| moderate	10.756 \| good	47.609 \| good	26.611 \| good	0.501 \| good	5.91 \| good	0.227 \| good
2026-01-24T05:00:00.000Z	54 \| moderate	10.5 \| good	46.544 \| good	26.557 \| good	0.473 \| good	6.259 \| good	0.232 \| good
2026-01-24T06:00:00.000Z	49 \| good	9.481 \| good	42.418 \| good	25.704 \| good	0.446 \| good	6.609 \| good	0.237 \| good
2026-01-24T07:00:00.000Z	49 \| good	9.064 \| good	39.799 \| good	24.114 \| good	0.415 \| good	5.99 \| good	0.233 \| good
2026-01-24T08:00:00.000Z	52 \| moderate	10.083 \| good	44.699 \| good	23.358 \| good	0.384 \| good	5.372 \| good	0.229 \| good
2026-01-24T09:00:00.000Z	49 \| good	8.833 \| good	39.143 \| good	23.35 \| good	0.352 \| good	4.753 \| good	0.226 \| good
2026-01-24T10:00:00.000Z	38 \| good	7.303 \| good	32.031 \| good	23.21 \| good	0.317 \| good	3.882 \| good	0.218 \| good
2026-01-24T11:00:00.000Z	38 \| good	7.279 \| good	31.858 \| good	22.111 \| good	0.281 \| good	3.012 \| good	0.21 \| good
2026-01-24T12:00:00.000Z	38 \| good	7.405 \| good	32.809 \| good	20.865 \| good	0.245 \| good	2.141 \| good	0.203 \| good
2026-01-24T13:00:00.000Z	38 \| good	7.489 \| good	32.982 \| good	18.524 \| good	0.235 \| good	2.098 \| good	0.201 \| good
2026-01-24T14:00:00.000Z	44 \| good	8.362 \| good	36.608 \| good	17.797 \| good	0.224 \| good	2.055 \| good	0.199 \| good
2026-01-24T15:00:00.000Z	52 \| moderate	9.504 \| good	42.02 \| good	15.927 \| good	0.214 \| good	2.012 \| good	0.197 \| good
2026-01-24T16:00:00.000Z	49 \| good	8.751 \| good	38.934 \| good	18.01 \| good	0.255 \| good	1.82 \| good	0.194 \| good
2026-01-24T17:00:00.000Z	56 \| moderate	11.901 \| good	53.202 \| good	23.814 \| good	0.296 \| good	1.628 \| good	0.191 \| good
2026-01-24T18:00:00.000Z	56 \| moderate	11.969 \| good	53.688 \| good	28.452 \| good	0.336 \| good	1.436 \| good	0.188 \| good
2026-01-24T19:00:00.000Z	44 \| good	8.276 \| good	36.363 \| good	33.387 \| good	0.486 \| good	1.271 \| good	0.186 \| good
2026-01-24T20:00:00.000Z	49 \| good	9.47 \| good	42.379 \| good	35.232 \| good	0.636 \| good	1.107 \| good	0.183 \| good
2026-01-24T21:00:00.000Z	44 \| good	8.034 \| good	35.343 \| good	36.232 \| good	0.785 \| good	0.942 \| good	0.181 \| good
2026-01-24T22:00:00.000Z	34 \| good	5.214 \| good	22.377 \| good	37.076 \| good	0.813 \| good	1.05 \| good	0.184 \| good
2026-01-24T23:00:00.000Z	38 \| good	7.309 \| good	32.296 \| good	36.758 \| good	0.84 \| good	1.157 \| good	0.188 \| good
2026-01-25T00:00:00.000Z	54 \| moderate	10.666 \| good	47.326 \| good	34.92 \| good	0.867 \| good	1.265 \| good	0.191 \| good
2026-01-25T01:00:00.000Z	44 \| good	8.295 \| good	36.399 \| good	28.729 \| good	0.862 \| good	2.705 \| good	0.208 \| good
2026-01-25T02:00:00.000Z	56 \| moderate	11.686 \| good	51.8 \| good	25.317 \| good	0.857 \| good	4.146 \| good	0.224 \| good
2026-01-25T03:00:00.000Z	56 \| moderate	12.313 \| fine	55.409 \| fine	22.84 \| good	0.852 \| good	5.586 \| good	0.241 \| good
2026-01-25T04:00:00.000Z	56 \| moderate	11.931 \| good	53.084 \| good	21.403 \| good	0.823 \| good	6.576 \| good	0.256 \| good
2026-01-25T05:00:00.000Z	56 \| moderate	11.987 \| good	53.409 \| good	18.873 \| good	0.794 \| good	7.566 \| good	0.271 \| good
2026-01-25T06:00:00.000Z	52 \| moderate	10.295 \| good	45.631 \| good	18.422 \| good	0.764 \| good	8.556 \| good	0.287 \| good
2026-01-25T07:00:00.000Z	52 \| moderate	10.077 \| good	44.673 \| good	19.367 \| good	0.72 \| good	8.049 \| good	0.288 \| good
2026-01-25T08:00:00.000Z	54 \| moderate	10.711 \| good	47.703 \| good	19.676 \| good	0.675 \| good	7.543 \| good	0.29 \| good
2026-01-25T09:00:00.000Z	52 \| moderate	10.191 \| good	44.887 \| good	19.738 \| good	0.631 \| good	7.036 \| good	0.291 \| good
2026-01-25T10:00:00.000Z	49 \| good	8.766 \| good	38.597 \| good	19.262 \| good	0.629 \| good	6.142 \| good	0.283 \| good
2026-01-25T11:00:00.000Z	44 \| good	8.234 \| good	36.485 \| good	19.046 \| good	0.628 \| good	5.249 \| good	0.275 \| good
2026-01-25T12:00:00.000Z	49 \| good	9.05 \| good	39.757 \| good	18.921 \| good	0.626 \| good	4.355 \| good	0.266 \| good
2026-01-25T13:00:00.000Z	49 \| good	9.179 \| good	40.571 \| good	18.826 \| good	0.638 \| good	4.203 \| good	0.262 \| good
2026-01-25T14:00:00.000Z	58 \| moderate	13.069 \| fine	59.041 \| fine	18.361 \| good	0.649 \| good	4.05 \| good	0.258 \| good
2026-01-25T15:00:00.000Z	58 \| moderate	12.622 \| fine	56.642 \| fine	18.281 \| good	0.66 \| good	3.897 \| good	0.254 \| good
2026-01-25T16:00:00.000Z	58 \| moderate	12.779 \| fine	57.324 \| fine	16.803 \| good	0.674 \| good	3.706 \| good	0.255 \| good
2026-01-25T17:00:00.000Z	54 \| moderate	10.963 \| good	48.452 \| good	20.612 \| good	0.689 \| good	3.514 \| good	0.256 \| good
2026-01-25T18:00:00.000Z	49 \| good	8.82 \| good	38.882 \| good	25.109 \| good	0.703 \| good	3.322 \| good	0.256 \| good
2026-01-25T19:00:00.000Z	38 \| good	7.038 \| good	31.264 \| good	30.603 \| good	0.699 \| good	2.967 \| good	0.226 \| good
2026-01-25T20:00:00.000Z	54 \| moderate	10.743 \| good	47.728 \| good	33.259 \| good	0.696 \| good	2.612 \| good	0.197 \| good
2026-01-25T21:00:00.000Z	49 \| good	9.453 \| good	42.059 \| good	33.904 \| good	0.692 \| good	2.257 \| good	0.167 \| good

San Luis Obispo, California live air quality index now

Major air pollutants in San Luis Obispo, 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

Los Osos, California

Grover Beach, California

Arroyo Grande, California

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Atascadero, California

Nipomo, California

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Frequently asked questions

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What is the current concentration of PM2.5 in San Luis Obispo, California?

What is the current concentration of PM10 in San Luis Obispo, California?

What is the current concentration of carbon monoxide (CO) in San Luis Obispo, California?

What is the current concentration of sulfur dioxide (SO2) in San Luis Obispo, California?

What is the current concentration of ozone (O3) in San Luis Obispo, California?

What is the current concentration of nitrogen dioxide (NO2) in San Luis Obispo, California?

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 San Luis Obispo, California?

What is the current concentration of PM₁₀ in San Luis Obispo, California?

What is the current concentration of sulfur dioxide (SO₂) in San Luis Obispo, California?

What is the current concentration of ozone (O₃) in San Luis Obispo, California?

What is the current concentration of nitrogen dioxide (NO₂) in San Luis Obispo, California?