What is the PM10 level in Palo Alto, California at the moment?

The PM10 concentration in Palo Alto, California is 65.149 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Palo Alto, California at the moment?

Currently, Palo Alto, California has a sulfur dioxide (SO2) concentration of 0.874 ppb.

What is the ozone (O3) level in Palo Alto, California at the moment?

The current ozone (O3) level in Palo Alto, California at the moment is 17.204 ppm.

What is the nitrogen dioxide (NO2) level in Palo Alto, California at the moment?

Nitrogen dioxide (NO2) level in Palo Alto, California at the moment is 7.169 ppb.

Live air quality index in Palo Alto, California today

Q: What is the PM2.5 level in Palo Alto, California at the moment?

PM2.5 levels in Palo Alto, California are currently 14.296 μg/m3.

Stay updated with real-time air quality in Palo Alto, 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

Palo Alto, California

Last updated: ... (Local time)

Major air pollutants in Palo Alto, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

14.30 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

65.15 μg/m³

155

255

425

605+

Ozone (O₃)

17.20 ppb

201

201+

Sulfur Dioxide (SO₂)

0.87 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.17 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.47 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

Palo Alto, California

Get Live Pollen Counts

Palo Alto, California

Scroll To Air Quality Map

Track live Palo Alto, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-22T02:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	5 \| good	0.788 \| good	22.4 \| good	0.8 \| good
2026-01-22T03:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	3 \| good	0.819 \| good	19.9 \| good	0.7 \| good
2026-01-22T04:00:00.000Z	56 \| moderate	11.8 \| good	52 \| good	3 \| good	0.782 \| good	21 \| good	0.6 \| good
2026-01-22T05:00:00.000Z	58 \| moderate	12.8 \| fine	57 \| fine	3 \| good	0.784 \| good	21.6 \| good	0.7 \| good
2026-01-22T06:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	1 \| good	0.845 \| good	19.4 \| good	1 \| good
2026-01-22T07:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	5.056 \| good	0.829 \| good	19.4 \| good	1 \| good
2026-01-22T08:00:00.000Z	62 \| moderate	14.6 \| fine	65 \| fine	4.501 \| good	0.906 \| good	17.2 \| good	1 \| good
2026-01-22T09:00:00.000Z	60 \| moderate	13.5 \| fine	61 \| fine	4.02 \| good	0.836 \| good	16.1 \| good	0.8 \| good
2026-01-22T10:00:00.000Z	60 \| moderate	14.1 \| fine	63 \| fine	6.148 \| good	0.845 \| good	14.7 \| good	0.7 \| good
2026-01-22T11:00:00.000Z	56 \| moderate	11.7 \| good	52 \| good	3.927 \| good	0.817 \| good	13.4 \| good	0.7 \| good
2026-01-22T12:00:00.000Z	56 \| moderate	11.8 \| good	52 \| good	3.569 \| good	0.806 \| good	13.4 \| good	0.7 \| good
2026-01-22T13:00:00.000Z	56 \| moderate	11.8 \| good	52 \| good	2.877 \| good	0.797 \| good	13.4 \| good	0.7 \| good
2026-01-22T14:00:00.000Z	54 \| moderate	10.9 \| good	48 \| good	2.984 \| good	0.769 \| good	12.4 \| good	0.7 \| good
2026-01-22T15:00:00.000Z	52 \| moderate	10 \| good	45 \| good	2.034 \| good	0.795 \| good	11.3 \| good	0.9 \| good
2026-01-22T16:00:00.000Z	52 \| moderate	10.4 \| good	46 \| good	1 \| good	0.767 \| good	16.1 \| good	1.2 \| good
2026-01-22T17:00:00.000Z	49 \| good	8.7 \| good	38 \| good	2 \| good	0.821 \| good	15.8 \| good	1 \| good
2026-01-22T18:00:00.000Z	66 \| moderate	17.3 \| fine	77 \| fine	3 \| good	0.953 \| good	11.7 \| good	0.6 \| good
2026-01-22T19:00:00.000Z	66 \| moderate	17.1 \| fine	77 \| fine	4 \| good	0.925 \| good	11.2 \| good	0.6 \| good
2026-01-22T20:00:00.000Z	64 \| moderate	15.5 \| fine	69 \| fine	5 \| good	1.078 \| good	12.8 \| good	0.6 \| good
2026-01-22T21:00:00.000Z	62 \| moderate	14.7 \| fine	65 \| fine	6 \| good	0.987 \| good	11.9 \| good	0.6 \| good
2026-01-22T22:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	9 \| good	0.801 \| good	11.1 \| good	0.5 \| good
2026-01-22T23:00:00.000Z	58 \| moderate	12.6 \| fine	57 \| fine	12 \| good	0.973 \| good	9.7 \| good	0.5 \| good
2026-01-23T00:00:00.000Z	56 \| moderate	12.3 \| fine	55 \| fine	16 \| good	0.907 \| good	9.9 \| good	0.5 \| good
2026-01-23T01:00:00.000Z	58 \| moderate	12.6 \| fine	57 \| fine	17 \| good	0.837 \| good	15.9 \| good	0.5 \| good
2026-01-23T02:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	16 \| good	1.417 \| good	17.6 \| good	0.6 \| good
2026-01-23T03:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	12 \| good	0.881 \| good	22.1 \| good	0.6 \| good
2026-01-23T04:00:00.000Z	52 \| moderate	10.3 \| good	46 \| good	12 \| good	0.732 \| good	19.9 \| good	0.7 \| good
2026-01-23T05:00:00.000Z	54 \| moderate	10.7 \| good	48 \| good	11 \| good	0.632 \| good	19.7 \| good	0.8 \| good
2026-01-23T06:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	7 \| good	0.549 \| good	19.6 \| good	0.8 \| good
2026-01-23T07:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	4 \| good	0.467 \| good	19.6 \| good	0.8 \| good
2026-01-23T08:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	3 \| good	0.488 \| good	15.1 \| good	0.7 \| good
2026-01-23T09:00:00.000Z	58 \| moderate	13.1 \| fine	59 \| fine	2 \| good	0.515 \| good	14.4 \| good	0.6 \| good
2026-01-23T10:00:00.000Z	56 \| moderate	11.7 \| good	52 \| good	1 \| good	0.583 \| good	11.3 \| good	0.6 \| good
2026-01-23T11:00:00.000Z	58 \| moderate	13.1 \| fine	59 \| fine	1 \| good	0.565 \| good	10.7 \| good	0.5 \| good
2026-01-23T12:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	9.96 \| good	0.381 \| good	10.7 \| good	0.5 \| good
2026-01-23T13:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	3.768 \| good	0.964 \| good	10.7 \| good	0.5 \| good
2026-01-23T14:00:00.000Z	49 \| good	9.1 \| good	41 \| good	2 \| good	0.912 \| good	11.9 \| good	0.5 \| good
2026-01-23T15:00:00.000Z	49 \| good	9 \| good	41 \| good	3 \| good	0.921 \| good	15 \| good	0.6 \| good
2026-01-23T16:00:00.000Z	49 \| good	8.5 \| good	37 \| good	3 \| good	0.781 \| good	16.4 \| good	0.6 \| good
2026-01-23T17:00:00.000Z	49 \| good	8.7 \| good	38 \| good	5 \| good	0.684 \| good	11.2 \| good	0.5 \| good
2026-01-23T18:00:00.000Z	49 \| good	8.7 \| good	38 \| good	8 \| good	0.651 \| good	11.2 \| good	0.5 \| good
2026-01-23T19:00:00.000Z	56 \| moderate	11.9 \| good	54 \| good	10 \| good	0.826 \| good	6.3 \| good	0.5 \| good
2026-01-23T20:00:00.000Z	58 \| moderate	12.9 \| fine	59 \| fine	13 \| good	1.082 \| good	8.4 \| good	0.5 \| good
2026-01-23T21:00:00.000Z	56 \| moderate	11.9 \| good	54 \| good	15 \| good	0.858 \| good	8.1 \| good	0.5 \| good
2026-01-23T22:00:00.000Z	58 \| moderate	13.4 \| fine	61 \| fine	18 \| good	0.769 \| good	8 \| good	0.5 \| good
2026-01-23T23:00:00.000Z	58 \| moderate	12.7 \| fine	57 \| fine	18 \| good	0.898 \| good	7 \| good	0.5 \| good
2026-01-24T00:00:00.000Z	60 \| moderate	14.3 \| fine	65 \| fine	17 \| good	0.884 \| good	6.3 \| good	0.5 \| good
2026-01-24T01:00:00.000Z	60 \| moderate	14.296 \| fine	65.149 \| fine	17.204 \| good	0.874 \| good	7.169 \| good	0.47 \| good
2026-01-24T02:00:00.000Z	77 \| moderate	23.35 \| fine	102.419 \| fine	10.454 \| good	2.61 \| good	18.042 \| good	0.29 \| good
2026-01-24T03:00:00.000Z	69 \| moderate	18.699 \| fine	82.832 \| fine	12.618 \| good	2.607 \| good	22.222 \| good	0.325 \| good
2026-01-24T04:00:00.000Z	67 \| moderate	17.886 \| fine	79.033 \| fine	17.395 \| good	2.775 \| good	23.043 \| good	0.343 \| good
2026-01-24T05:00:00.000Z	66 \| moderate	17.101 \| fine	76.806 \| fine	18.927 \| good	2.943 \| good	23.863 \| good	0.36 \| good
2026-01-24T06:00:00.000Z	66 \| moderate	17.286 \| fine	76.986 \| fine	14.994 \| good	3.111 \| good	24.683 \| good	0.378 \| good
2026-01-24T07:00:00.000Z	64 \| moderate	15.809 \| fine	71.094 \| fine	13.429 \| good	2.967 \| good	23.925 \| good	0.374 \| good
2026-01-24T08:00:00.000Z	56 \| moderate	11.608 \| good	51.419 \| good	14.23 \| good	2.823 \| good	23.166 \| good	0.369 \| good
2026-01-24T09:00:00.000Z	52 \| moderate	9.787 \| good	43.457 \| good	10.326 \| good	2.679 \| good	22.408 \| good	0.365 \| good
2026-01-24T10:00:00.000Z	33 \| good	6.468 \| good	28.394 \| good	8.192 \| good	2.595 \| good	21.77 \| good	0.357 \| good
2026-01-24T11:00:00.000Z	44 \| good	7.883 \| good	34.38 \| good	6.718 \| good	2.51 \| good	21.133 \| good	0.349 \| good
2026-01-24T12:00:00.000Z	44 \| good	8.301 \| good	36.952 \| good	4.187 \| good	2.426 \| good	20.495 \| good	0.341 \| good
2026-01-24T13:00:00.000Z	49 \| good	8.754 \| good	38.1 \| good	5.222 \| good	2.51 \| good	20.746 \| good	0.327 \| good
2026-01-24T14:00:00.000Z	49 \| good	9.187 \| good	41.295 \| good	4.412 \| good	2.594 \| good	20.998 \| good	0.312 \| good
2026-01-24T15:00:00.000Z	58 \| moderate	13.257 \| fine	59.968 \| fine	4.429 \| good	2.678 \| good	21.249 \| good	0.297 \| good
2026-01-24T16:00:00.000Z	56 \| moderate	11.846 \| good	53.303 \| good	7.918 \| good	2.391 \| good	18.535 \| good	0.278 \| good
2026-01-24T17:00:00.000Z	54 \| moderate	10.696 \| good	47.671 \| good	17.857 \| good	2.104 \| good	15.821 \| good	0.259 \| good
2026-01-24T18:00:00.000Z	27 \| good	4.799 \| good	21.113 \| good	24.283 \| good	1.816 \| good	13.106 \| good	0.24 \| good
2026-01-24T19:00:00.000Z	27 \| good	4.875 \| good	21.285 \| good	24.854 \| good	1.556 \| good	10.346 \| good	0.21 \| good
2026-01-24T20:00:00.000Z	25 \| good	3.987 \| good	17.275 \| good	27.202 \| good	1.295 \| good	7.587 \| good	0.18 \| good
2026-01-24T21:00:00.000Z	27 \| good	4.949 \| good	21.067 \| good	27.399 \| good	1.035 \| good	4.827 \| good	0.15 \| good
2026-01-24T22:00:00.000Z	28 \| good	1.868 \| good	8.037 \| good	29.513 \| good	1.02 \| good	5.241 \| good	0.15 \| good
2026-01-24T23:00:00.000Z	27 \| good	0.673 \| good	2.153 \| good	29.019 \| good	1.005 \| good	5.655 \| good	0.149 \| good
2026-01-25T00:00:00.000Z	28 \| good	0.967 \| good	4.052 \| good	29.697 \| good	0.991 \| good	6.069 \| good	0.148 \| good
2026-01-25T01:00:00.000Z	19 \| good	0.927 \| good	4.004 \| good	19.779 \| good	1.122 \| good	12.47 \| good	0.184 \| good
2026-01-25T02:00:00.000Z	22 \| good	4.442 \| good	18.995 \| good	11.546 \| good	1.253 \| good	18.871 \| good	0.22 \| good
2026-01-25T03:00:00.000Z	27 \| good	5.269 \| good	22.921 \| good	7.91 \| good	1.383 \| good	25.272 \| good	0.256 \| good
2026-01-25T04:00:00.000Z	25 \| good	4.324 \| good	18.937 \| good	7.122 \| good	1.454 \| good	26.316 \| good	0.269 \| good
2026-01-25T05:00:00.000Z	25 \| good	4.014 \| good	17.904 \| good	9.673 \| good	1.524 \| good	27.361 \| good	0.282 \| good
2026-01-25T06:00:00.000Z	26 \| good	2.871 \| good	12.175 \| good	11.081 \| good	1.595 \| good	28.406 \| good	0.295 \| good
2026-01-25T07:00:00.000Z	26 \| good	3.018 \| good	12.263 \| good	8.025 \| good	1.44 \| good	27.58 \| good	0.294 \| good
2026-01-25T08:00:00.000Z	25 \| good	3.438 \| good	15.075 \| good	6.786 \| good	1.286 \| good	26.755 \| good	0.293 \| good
2026-01-25T09:00:00.000Z	27 \| good	4.779 \| good	21.03 \| good	4.705 \| good	1.131 \| good	25.93 \| good	0.292 \| good
2026-01-25T10:00:00.000Z	24 \| good	3.259 \| good	14.182 \| good	3.032 \| good	1.034 \| good	24.685 \| good	0.28 \| good
2026-01-25T11:00:00.000Z	22 \| good	3.825 \| good	16.331 \| good	3.968 \| good	0.938 \| good	23.44 \| good	0.268 \| good
2026-01-25T12:00:00.000Z	22 \| good	3.51 \| good	15.222 \| good	2.769 \| good	0.841 \| good	22.195 \| good	0.257 \| good
2026-01-25T13:00:00.000Z	21 \| good	3.082 \| good	12.256 \| good	2.994 \| good	0.911 \| good	21.883 \| good	0.25 \| good
2026-01-25T14:00:00.000Z	21 \| good	2.098 \| good	8.292 \| good	3.716 \| good	0.98 \| good	21.571 \| good	0.243 \| good
2026-01-25T15:00:00.000Z	20 \| good	2.807 \| good	11.285 \| good	4.466 \| good	1.05 \| good	21.259 \| good	0.236 \| good
2026-01-25T16:00:00.000Z	22 \| good	3.615 \| good	16 \| good	5.494 \| good	1.137 \| good	19.421 \| good	0.246 \| good
2026-01-25T17:00:00.000Z	52 \| moderate	10.205 \| good	45.056 \| good	10.994 \| good	1.223 \| good	17.582 \| good	0.256 \| good
2026-01-25T18:00:00.000Z	44 \| good	8.017 \| good	35.154 \| good	16.471 \| good	1.31 \| good	15.743 \| good	0.266 \| good
2026-01-25T19:00:00.000Z	44 \| good	7.956 \| good	34.97 \| good	20.37 \| good	1.39 \| good	13.812 \| good	0.247 \| good
2026-01-25T20:00:00.000Z	44 \| good	7.987 \| good	34.951 \| good	23.693 \| good	1.471 \| good	11.881 \| good	0.228 \| good
2026-01-25T21:00:00.000Z	38 \| good	6.781 \| good	29.868 \| good	24.48 \| good	1.552 \| good	9.95 \| good	0.21 \| good
2026-01-25T22:00:00.000Z	27 \| good	4.588 \| good	20.133 \| good	28.547 \| good	1.574 \| good	11.006 \| good	0.215 \| good
2026-01-25T23:00:00.000Z	38 \| good	7.089 \| good	31.02 \| good	29.427 \| good	1.595 \| good	12.062 \| good	0.22 \| good
2026-01-26T00:00:00.000Z	60 \| moderate	13.542 \| fine	17.252 \| good	19.718 \| good	1.618 \| good	13.138 \| good	0.225 \| good
2026-01-26T01:00:00.000Z	54 \| moderate	11.245 \| good	49.663 \| good	14.632 \| good	1.679 \| good	16.675 \| good	0.276 \| good

Palo Alto

Get reliable air quality data to drive your business

Palo Alto, California air quality map: Stay updated on AQI near you

0.43ppm

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

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

Frequently asked questions

How often is air quality information updated for Palo Alto, California?

The air quality information for Palo Alto, California is updated every hour for accuracy.

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

In the past 24 hours, the air quality in Palo Alto, California was at its worst at 12:00:00 on 2026-01-24.

When did Palo Alto, California experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Palo Alto, California was observed at 06:00:00 on 2026-01-23.

What is the AQI in Palo Alto, California right now?

As of now, the AQI in Palo Alto, California is 60, indicating Moderate conditions.

What is the most common type of pollution in Palo Alto, California?

Palo Alto, California air has the highest levels of PM2.5.

What should I do in case of poor air quality in Palo Alto, California?

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

What is the PM_2.5 level in Palo Alto, California at the moment?

PM_2.5 levels in Palo Alto, California are currently 14.296 μg/m³.

What is the PM₁₀ level in Palo Alto, California at the moment?

The PM₁₀ concentration in Palo Alto, California is 65.149 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Palo Alto, California at the moment?

The current carbon monoxide (CO) concentration in Palo Alto, California is 0.47 ppm.

What is the sulfur dioxide (SO₂) level in Palo Alto, California at the moment?

Currently, Palo Alto, California has a sulfur dioxide (SO₂) concentration of 0.874 ppb.

What is the ozone (O₃) level in Palo Alto, California at the moment?

The current ozone (O₃) level in Palo Alto, California at the moment is 17.204 ppm.

What is the nitrogen dioxide (NO₂) level in Palo Alto, California at the moment?

Nitrogen dioxide (NO₂) level in Palo Alto, California at the moment is 7.169 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-22T02:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	5 \| good	0.788 \| good	22.4 \| good	0.8 \| good
2026-01-22T03:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	3 \| good	0.819 \| good	19.9 \| good	0.7 \| good
2026-01-22T04:00:00.000Z	56 \| moderate	11.8 \| good	52 \| good	3 \| good	0.782 \| good	21 \| good	0.6 \| good
2026-01-22T05:00:00.000Z	58 \| moderate	12.8 \| fine	57 \| fine	3 \| good	0.784 \| good	21.6 \| good	0.7 \| good
2026-01-22T06:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	1 \| good	0.845 \| good	19.4 \| good	1 \| good
2026-01-22T07:00:00.000Z	62 \| moderate	14.5 \| fine	65 \| fine	5.056 \| good	0.829 \| good	19.4 \| good	1 \| good
2026-01-22T08:00:00.000Z	62 \| moderate	14.6 \| fine	65 \| fine	4.501 \| good	0.906 \| good	17.2 \| good	1 \| good
2026-01-22T09:00:00.000Z	60 \| moderate	13.5 \| fine	61 \| fine	4.02 \| good	0.836 \| good	16.1 \| good	0.8 \| good
2026-01-22T10:00:00.000Z	60 \| moderate	14.1 \| fine	63 \| fine	6.148 \| good	0.845 \| good	14.7 \| good	0.7 \| good
2026-01-22T11:00:00.000Z	56 \| moderate	11.7 \| good	52 \| good	3.927 \| good	0.817 \| good	13.4 \| good	0.7 \| good
2026-01-22T12:00:00.000Z	56 \| moderate	11.8 \| good	52 \| good	3.569 \| good	0.806 \| good	13.4 \| good	0.7 \| good
2026-01-22T13:00:00.000Z	56 \| moderate	11.8 \| good	52 \| good	2.877 \| good	0.797 \| good	13.4 \| good	0.7 \| good
2026-01-22T14:00:00.000Z	54 \| moderate	10.9 \| good	48 \| good	2.984 \| good	0.769 \| good	12.4 \| good	0.7 \| good
2026-01-22T15:00:00.000Z	52 \| moderate	10 \| good	45 \| good	2.034 \| good	0.795 \| good	11.3 \| good	0.9 \| good
2026-01-22T16:00:00.000Z	52 \| moderate	10.4 \| good	46 \| good	1 \| good	0.767 \| good	16.1 \| good	1.2 \| good
2026-01-22T17:00:00.000Z	49 \| good	8.7 \| good	38 \| good	2 \| good	0.821 \| good	15.8 \| good	1 \| good
2026-01-22T18:00:00.000Z	66 \| moderate	17.3 \| fine	77 \| fine	3 \| good	0.953 \| good	11.7 \| good	0.6 \| good
2026-01-22T19:00:00.000Z	66 \| moderate	17.1 \| fine	77 \| fine	4 \| good	0.925 \| good	11.2 \| good	0.6 \| good
2026-01-22T20:00:00.000Z	64 \| moderate	15.5 \| fine	69 \| fine	5 \| good	1.078 \| good	12.8 \| good	0.6 \| good
2026-01-22T21:00:00.000Z	62 \| moderate	14.7 \| fine	65 \| fine	6 \| good	0.987 \| good	11.9 \| good	0.6 \| good
2026-01-22T22:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	9 \| good	0.801 \| good	11.1 \| good	0.5 \| good
2026-01-22T23:00:00.000Z	58 \| moderate	12.6 \| fine	57 \| fine	12 \| good	0.973 \| good	9.7 \| good	0.5 \| good
2026-01-23T00:00:00.000Z	56 \| moderate	12.3 \| fine	55 \| fine	16 \| good	0.907 \| good	9.9 \| good	0.5 \| good
2026-01-23T01:00:00.000Z	58 \| moderate	12.6 \| fine	57 \| fine	17 \| good	0.837 \| good	15.9 \| good	0.5 \| good
2026-01-23T02:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	16 \| good	1.417 \| good	17.6 \| good	0.6 \| good
2026-01-23T03:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	12 \| good	0.881 \| good	22.1 \| good	0.6 \| good
2026-01-23T04:00:00.000Z	52 \| moderate	10.3 \| good	46 \| good	12 \| good	0.732 \| good	19.9 \| good	0.7 \| good
2026-01-23T05:00:00.000Z	54 \| moderate	10.7 \| good	48 \| good	11 \| good	0.632 \| good	19.7 \| good	0.8 \| good
2026-01-23T06:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	7 \| good	0.549 \| good	19.6 \| good	0.8 \| good
2026-01-23T07:00:00.000Z	56 \| moderate	11.6 \| good	51 \| good	4 \| good	0.467 \| good	19.6 \| good	0.8 \| good
2026-01-23T08:00:00.000Z	58 \| moderate	13.3 \| fine	61 \| fine	3 \| good	0.488 \| good	15.1 \| good	0.7 \| good
2026-01-23T09:00:00.000Z	58 \| moderate	13.1 \| fine	59 \| fine	2 \| good	0.515 \| good	14.4 \| good	0.6 \| good
2026-01-23T10:00:00.000Z	56 \| moderate	11.7 \| good	52 \| good	1 \| good	0.583 \| good	11.3 \| good	0.6 \| good
2026-01-23T11:00:00.000Z	58 \| moderate	13.1 \| fine	59 \| fine	1 \| good	0.565 \| good	10.7 \| good	0.5 \| good
2026-01-23T12:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	9.96 \| good	0.381 \| good	10.7 \| good	0.5 \| good
2026-01-23T13:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	3.768 \| good	0.964 \| good	10.7 \| good	0.5 \| good
2026-01-23T14:00:00.000Z	49 \| good	9.1 \| good	41 \| good	2 \| good	0.912 \| good	11.9 \| good	0.5 \| good
2026-01-23T15:00:00.000Z	49 \| good	9 \| good	41 \| good	3 \| good	0.921 \| good	15 \| good	0.6 \| good
2026-01-23T16:00:00.000Z	49 \| good	8.5 \| good	37 \| good	3 \| good	0.781 \| good	16.4 \| good	0.6 \| good
2026-01-23T17:00:00.000Z	49 \| good	8.7 \| good	38 \| good	5 \| good	0.684 \| good	11.2 \| good	0.5 \| good
2026-01-23T18:00:00.000Z	49 \| good	8.7 \| good	38 \| good	8 \| good	0.651 \| good	11.2 \| good	0.5 \| good
2026-01-23T19:00:00.000Z	56 \| moderate	11.9 \| good	54 \| good	10 \| good	0.826 \| good	6.3 \| good	0.5 \| good
2026-01-23T20:00:00.000Z	58 \| moderate	12.9 \| fine	59 \| fine	13 \| good	1.082 \| good	8.4 \| good	0.5 \| good
2026-01-23T21:00:00.000Z	56 \| moderate	11.9 \| good	54 \| good	15 \| good	0.858 \| good	8.1 \| good	0.5 \| good
2026-01-23T22:00:00.000Z	58 \| moderate	13.4 \| fine	61 \| fine	18 \| good	0.769 \| good	8 \| good	0.5 \| good
2026-01-23T23:00:00.000Z	58 \| moderate	12.7 \| fine	57 \| fine	18 \| good	0.898 \| good	7 \| good	0.5 \| good
2026-01-24T00:00:00.000Z	60 \| moderate	14.3 \| fine	65 \| fine	17 \| good	0.884 \| good	6.3 \| good	0.5 \| good
2026-01-24T01:00:00.000Z	60 \| moderate	14.296 \| fine	65.149 \| fine	17.204 \| good	0.874 \| good	7.169 \| good	0.47 \| good
2026-01-24T02:00:00.000Z	77 \| moderate	23.35 \| fine	102.419 \| fine	10.454 \| good	2.61 \| good	18.042 \| good	0.29 \| good
2026-01-24T03:00:00.000Z	69 \| moderate	18.699 \| fine	82.832 \| fine	12.618 \| good	2.607 \| good	22.222 \| good	0.325 \| good
2026-01-24T04:00:00.000Z	67 \| moderate	17.886 \| fine	79.033 \| fine	17.395 \| good	2.775 \| good	23.043 \| good	0.343 \| good
2026-01-24T05:00:00.000Z	66 \| moderate	17.101 \| fine	76.806 \| fine	18.927 \| good	2.943 \| good	23.863 \| good	0.36 \| good
2026-01-24T06:00:00.000Z	66 \| moderate	17.286 \| fine	76.986 \| fine	14.994 \| good	3.111 \| good	24.683 \| good	0.378 \| good
2026-01-24T07:00:00.000Z	64 \| moderate	15.809 \| fine	71.094 \| fine	13.429 \| good	2.967 \| good	23.925 \| good	0.374 \| good
2026-01-24T08:00:00.000Z	56 \| moderate	11.608 \| good	51.419 \| good	14.23 \| good	2.823 \| good	23.166 \| good	0.369 \| good
2026-01-24T09:00:00.000Z	52 \| moderate	9.787 \| good	43.457 \| good	10.326 \| good	2.679 \| good	22.408 \| good	0.365 \| good
2026-01-24T10:00:00.000Z	33 \| good	6.468 \| good	28.394 \| good	8.192 \| good	2.595 \| good	21.77 \| good	0.357 \| good
2026-01-24T11:00:00.000Z	44 \| good	7.883 \| good	34.38 \| good	6.718 \| good	2.51 \| good	21.133 \| good	0.349 \| good
2026-01-24T12:00:00.000Z	44 \| good	8.301 \| good	36.952 \| good	4.187 \| good	2.426 \| good	20.495 \| good	0.341 \| good
2026-01-24T13:00:00.000Z	49 \| good	8.754 \| good	38.1 \| good	5.222 \| good	2.51 \| good	20.746 \| good	0.327 \| good
2026-01-24T14:00:00.000Z	49 \| good	9.187 \| good	41.295 \| good	4.412 \| good	2.594 \| good	20.998 \| good	0.312 \| good
2026-01-24T15:00:00.000Z	58 \| moderate	13.257 \| fine	59.968 \| fine	4.429 \| good	2.678 \| good	21.249 \| good	0.297 \| good
2026-01-24T16:00:00.000Z	56 \| moderate	11.846 \| good	53.303 \| good	7.918 \| good	2.391 \| good	18.535 \| good	0.278 \| good
2026-01-24T17:00:00.000Z	54 \| moderate	10.696 \| good	47.671 \| good	17.857 \| good	2.104 \| good	15.821 \| good	0.259 \| good
2026-01-24T18:00:00.000Z	27 \| good	4.799 \| good	21.113 \| good	24.283 \| good	1.816 \| good	13.106 \| good	0.24 \| good
2026-01-24T19:00:00.000Z	27 \| good	4.875 \| good	21.285 \| good	24.854 \| good	1.556 \| good	10.346 \| good	0.21 \| good
2026-01-24T20:00:00.000Z	25 \| good	3.987 \| good	17.275 \| good	27.202 \| good	1.295 \| good	7.587 \| good	0.18 \| good
2026-01-24T21:00:00.000Z	27 \| good	4.949 \| good	21.067 \| good	27.399 \| good	1.035 \| good	4.827 \| good	0.15 \| good
2026-01-24T22:00:00.000Z	28 \| good	1.868 \| good	8.037 \| good	29.513 \| good	1.02 \| good	5.241 \| good	0.15 \| good
2026-01-24T23:00:00.000Z	27 \| good	0.673 \| good	2.153 \| good	29.019 \| good	1.005 \| good	5.655 \| good	0.149 \| good
2026-01-25T00:00:00.000Z	28 \| good	0.967 \| good	4.052 \| good	29.697 \| good	0.991 \| good	6.069 \| good	0.148 \| good
2026-01-25T01:00:00.000Z	19 \| good	0.927 \| good	4.004 \| good	19.779 \| good	1.122 \| good	12.47 \| good	0.184 \| good
2026-01-25T02:00:00.000Z	22 \| good	4.442 \| good	18.995 \| good	11.546 \| good	1.253 \| good	18.871 \| good	0.22 \| good
2026-01-25T03:00:00.000Z	27 \| good	5.269 \| good	22.921 \| good	7.91 \| good	1.383 \| good	25.272 \| good	0.256 \| good
2026-01-25T04:00:00.000Z	25 \| good	4.324 \| good	18.937 \| good	7.122 \| good	1.454 \| good	26.316 \| good	0.269 \| good
2026-01-25T05:00:00.000Z	25 \| good	4.014 \| good	17.904 \| good	9.673 \| good	1.524 \| good	27.361 \| good	0.282 \| good
2026-01-25T06:00:00.000Z	26 \| good	2.871 \| good	12.175 \| good	11.081 \| good	1.595 \| good	28.406 \| good	0.295 \| good
2026-01-25T07:00:00.000Z	26 \| good	3.018 \| good	12.263 \| good	8.025 \| good	1.44 \| good	27.58 \| good	0.294 \| good
2026-01-25T08:00:00.000Z	25 \| good	3.438 \| good	15.075 \| good	6.786 \| good	1.286 \| good	26.755 \| good	0.293 \| good
2026-01-25T09:00:00.000Z	27 \| good	4.779 \| good	21.03 \| good	4.705 \| good	1.131 \| good	25.93 \| good	0.292 \| good
2026-01-25T10:00:00.000Z	24 \| good	3.259 \| good	14.182 \| good	3.032 \| good	1.034 \| good	24.685 \| good	0.28 \| good
2026-01-25T11:00:00.000Z	22 \| good	3.825 \| good	16.331 \| good	3.968 \| good	0.938 \| good	23.44 \| good	0.268 \| good
2026-01-25T12:00:00.000Z	22 \| good	3.51 \| good	15.222 \| good	2.769 \| good	0.841 \| good	22.195 \| good	0.257 \| good
2026-01-25T13:00:00.000Z	21 \| good	3.082 \| good	12.256 \| good	2.994 \| good	0.911 \| good	21.883 \| good	0.25 \| good
2026-01-25T14:00:00.000Z	21 \| good	2.098 \| good	8.292 \| good	3.716 \| good	0.98 \| good	21.571 \| good	0.243 \| good
2026-01-25T15:00:00.000Z	20 \| good	2.807 \| good	11.285 \| good	4.466 \| good	1.05 \| good	21.259 \| good	0.236 \| good
2026-01-25T16:00:00.000Z	22 \| good	3.615 \| good	16 \| good	5.494 \| good	1.137 \| good	19.421 \| good	0.246 \| good
2026-01-25T17:00:00.000Z	52 \| moderate	10.205 \| good	45.056 \| good	10.994 \| good	1.223 \| good	17.582 \| good	0.256 \| good
2026-01-25T18:00:00.000Z	44 \| good	8.017 \| good	35.154 \| good	16.471 \| good	1.31 \| good	15.743 \| good	0.266 \| good
2026-01-25T19:00:00.000Z	44 \| good	7.956 \| good	34.97 \| good	20.37 \| good	1.39 \| good	13.812 \| good	0.247 \| good
2026-01-25T20:00:00.000Z	44 \| good	7.987 \| good	34.951 \| good	23.693 \| good	1.471 \| good	11.881 \| good	0.228 \| good
2026-01-25T21:00:00.000Z	38 \| good	6.781 \| good	29.868 \| good	24.48 \| good	1.552 \| good	9.95 \| good	0.21 \| good
2026-01-25T22:00:00.000Z	27 \| good	4.588 \| good	20.133 \| good	28.547 \| good	1.574 \| good	11.006 \| good	0.215 \| good
2026-01-25T23:00:00.000Z	38 \| good	7.089 \| good	31.02 \| good	29.427 \| good	1.595 \| good	12.062 \| good	0.22 \| good
2026-01-26T00:00:00.000Z	60 \| moderate	13.542 \| fine	17.252 \| good	19.718 \| good	1.618 \| good	13.138 \| good	0.225 \| good
2026-01-26T01:00:00.000Z	54 \| moderate	11.245 \| good	49.663 \| good	14.632 \| good	1.679 \| good	16.675 \| good	0.276 \| good

Live air quality index in Palo Alto, California today

Major air pollutants in Palo Alto, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Palo Alto, California air quality forecast and history

Get reliable air quality data to drive your business

Palo Alto, California air quality map: Stay updated on AQI near you

Air quality in nearby cities

Stanford, California

East Palo Alto, California

Menlo Park, California

North Fair Oaks, California

Los Altos, California

Mountain View City, California

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

How often is air quality information updated for Palo Alto, California?

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

When did Palo Alto, California experience the best air quality in the last 24 hours?

What is the AQI in Palo Alto, California right now?

What is the most common type of pollution in Palo Alto, California?

What should I do in case of poor air quality in Palo Alto, California?

What is the PM2.5 level in Palo Alto, California at the moment?

What is the PM10 level in Palo Alto, California at the moment?

What is the carbon monoxide (CO) level in Palo Alto, California at the moment?

What is the sulfur dioxide (SO2) level in Palo Alto, California at the moment?

What is the ozone (O3) level in Palo Alto, California at the moment?

What is the nitrogen dioxide (NO2) level in Palo Alto, 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 Palo Alto, California at the moment?

What is the PM₁₀ level in Palo Alto, California at the moment?

What is the sulfur dioxide (SO₂) level in Palo Alto, California at the moment?

What is the ozone (O₃) level in Palo Alto, California at the moment?

What is the nitrogen dioxide (NO₂) level in Palo Alto, California at the moment?