What is the current level of PM10 in San Francisco, California?

San Francisco, California currently has a PM10 concentration of 23.309 μg/m3.

What is the current level of sulfur dioxide (SO2) in San Francisco, California?

The current sulfur dioxide (SO2) concentration in San Francisco, California is 0.636 ppb.

What is the current level of ozone (O3) in San Francisco, California?

San Francisco, California currently has an ozone (O3) concentration of 18.97 ppm.

What is the current level of nitrogen dioxide (NO2) in San Francisco, California?

The current level of nitrogen dioxide (NO2) in San Francisco, California is 0.867 ppb.

Current air quality index in San Francisco, California today

Name: Live air pollution levels in San Francisco, California today
Creator: Ambee

Stay updated with real-time air quality in San Francisco, 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 Francisco, California

Last updated: ... (Local time)

Common air pollutants in San Francisco, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.81 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.00 μg/m³

155

255

425

605+

Ozone (O₃)

17.93 ppb

201

201+

Sulfur Dioxide (SO₂)

0.41 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

1.77 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

San Francisco, California

Get Live Pollen Counts

San Francisco, California

Scroll To Air Quality Map

Track live San Francisco, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T15:00:00.000Z	22 \| good	3.585 \| good	15.936 \| good	15.913 \| good	0.554 \| good	2.23 \| good	0.315 \| good
2025-07-28T16:00:00.000Z	22 \| good	4.032 \| good	17.606 \| good	15.874 \| good	0.649 \| good	3.133 \| good	0.409 \| good
2025-07-28T17:00:00.000Z	27 \| good	5.027 \| good	21.6 \| good	15.837 \| good	0.735 \| good	2.499 \| good	0.409 \| good
2025-07-28T18:00:00.000Z	27 \| good	5.472 \| good	23.372 \| good	16.77 \| good	0.668 \| good	2.302 \| good	0.4 \| good
2025-07-28T19:00:00.000Z	27 \| good	4.911 \| good	21.92 \| good	16.827 \| good	0.696 \| good	2.214 \| good	0.306 \| good
2025-07-28T20:00:00.000Z	27 \| good	4.624 \| good	20.462 \| good	16.978 \| good	0.688 \| good	1.906 \| good	0.304 \| good
2025-07-28T21:00:00.000Z	27 \| good	4.624 \| good	20.462 \| good	17.009 \| good	0.739 \| good	1.906 \| good	0.304 \| good
2025-07-28T22:00:00.000Z	38 \| good	6.597 \| good	29.351 \| good	17.963 \| good	0.689 \| good	2.065 \| good	0.302 \| good
2025-07-28T23:00:00.000Z	33 \| good	6.219 \| good	27.524 \| good	18.972 \| good	0.389 \| good	1.767 \| good	0.302 \| good
2025-07-29T00:00:00.000Z	38 \| good	7.093 \| good	31.403 \| good	20.003 \| good	0.432 \| good	2.06 \| good	0.302 \| good
2025-07-29T01:00:00.000Z	38 \| good	7.074 \| good	31.32 \| good	20.121 \| good	0.439 \| good	2.062 \| good	0.302 \| good
2025-07-29T02:00:00.000Z	33 \| good	5.866 \| good	25.787 \| good	21.005 \| good	0.401 \| good	1.528 \| good	0.299 \| good
2025-07-29T03:00:00.000Z	27 \| good	4.977 \| good	21.818 \| good	19.153 \| good	0.384 \| good	2.718 \| good	0.298 \| good
2025-07-29T04:00:00.000Z	22 \| good	4.196 \| good	18.372 \| good	19.119 \| good	0.708 \| good	2.299 \| good	0.3 \| good
2025-07-29T05:00:00.000Z	18 \| good	3.262 \| good	13.701 \| good	19.041 \| good	0.691 \| good	2.049 \| good	0.305 \| good
2025-07-29T06:00:00.000Z	27 \| good	5.03 \| good	21.628 \| good	18.963 \| good	0.675 \| good	2.323 \| good	0.305 \| good
2025-07-29T07:00:00.000Z	27 \| good	5.021 \| good	21.604 \| good	17.969 \| good	0.687 \| good	1.816 \| good	0.3 \| good
2025-07-29T08:00:00.000Z	33 \| good	5.936 \| good	27.124 \| good	17.854 \| good	0.686 \| good	1.816 \| good	0.3 \| good
2025-07-29T09:00:00.000Z	44 \| good	7.583 \| good	33.51 \| good	17.911 \| good	0.696 \| good	1.109 \| good	0.298 \| good
2025-07-29T10:00:00.000Z	44 \| good	7.583 \| good	33.51 \| good	17.85 \| good	0.624 \| good	1.164 \| good	0.296 \| good
2025-07-29T11:00:00.000Z	38 \| good	6.761 \| good	29.854 \| good	16.91 \| good	0.619 \| good	1.164 \| good	0.296 \| good
2025-07-29T12:00:00.000Z	22 \| good	4.373 \| good	19.724 \| good	15.909 \| good	0.621 \| good	1.363 \| good	0.296 \| good
2025-07-29T13:00:00.000Z	22 \| good	4.373 \| good	19.724 \| good	16.017 \| good	0.484 \| good	1.805 \| good	0.3 \| good
2025-07-29T14:00:00.000Z	33 \| good	6.08 \| good	27.312 \| good	13.935 \| good	0.231 \| good	2.717 \| good	0.304 \| good
2025-07-29T15:00:00.000Z	33 \| good	6.047 \| good	27.186 \| good	15.737 \| good	0.407 \| good	2.732 \| good	0.306 \| good
2025-07-29T16:00:00.000Z	33 \| good	5.565 \| good	24.3 \| good	14.894 \| good	0.241 \| good	3.065 \| good	0.302 \| good
2025-07-29T17:00:00.000Z	33 \| good	6.438 \| good	28.993 \| good	14.797 \| good	0.252 \| good	2.489 \| good	0.307 \| good
2025-07-29T18:00:00.000Z	33 \| good	6.272 \| good	27.746 \| good	15.665 \| good	0.247 \| good	2.28 \| good	0.306 \| good
2025-07-29T19:00:00.000Z	27 \| good	4.887 \| good	21.696 \| good	15.799 \| good	0.489 \| good	2.678 \| good	0.306 \| good
2025-07-29T20:00:00.000Z	27 \| good	4.657 \| good	20.991 \| good	16.009 \| good	0.276 \| good	2.163 \| good	0.304 \| good
2025-07-29T21:00:00.000Z	27 \| good	5.459 \| good	23.645 \| good	17.051 \| good	0.223 \| good	1.6 \| good	0.304 \| good
2025-07-29T22:00:00.000Z	38 \| good	7.182 \| good	31.82 \| good	17.067 \| good	0.431 \| good	1.644 \| good	0.304 \| good
2025-07-29T23:00:00.000Z	38 \| good	7.182 \| good	31.82 \| good	18.009 \| good	0.43 \| good	1.644 \| good	0.304 \| good
2025-07-30T00:00:00.000Z	33 \| good	6.239 \| good	28.023 \| good	16.176 \| good	0.465 \| good	1.366 \| good	0.302 \| good
2025-07-30T01:00:00.000Z	33 \| good	5.741 \| good	25.12 \| good	17.044 \| good	2.102 \| good	1.366 \| good	0.302 \| good
2025-07-30T02:00:00.000Z	27 \| good	5.02 \| good	22.416 \| good	17.076 \| good	12.44 \| good	1.473 \| good	0.298 \| good
2025-07-30T03:00:00.000Z	22 \| good	4.351 \| good	18.669 \| good	17.2 \| good	0.35 \| good	3.354 \| good	0.1 \| good
2025-07-30T04:00:00.000Z	33 \| good	6.428 \| good	28.579 \| good	16.975 \| good	2.408 \| good	2.037 \| good	0.3 \| good
2025-07-30T05:00:00.000Z	27 \| good	5.233 \| good	22.647 \| good	17.94 \| good	1.478 \| good	1.6 \| good	0.3 \| good
2025-07-30T06:00:00.000Z	17 \| good	3.206 \| good	13.01 \| good	17.903 \| good	0.735 \| good	1.231 \| good	0.302 \| good
2025-07-30T07:00:00.000Z	17 \| good	3.206 \| good	13.01 \| good	17.998 \| good	0.705 \| good	1.231 \| good	0.302 \| good
2025-07-30T08:00:00.000Z	22 \| good	3.894 \| good	16.87 \| good	18.044 \| good	0.607 \| good	0.848 \| good	0.302 \| good
2025-07-30T09:00:00.000Z	27 \| good	5.36 \| good	23.309 \| good	18.93 \| good	0.561 \| good	0.688 \| good	0.3 \| good
2025-07-30T10:00:00.000Z	27 \| good	5.36 \| good	23.309 \| good	18.97 \| good	0.636 \| good	0.867 \| good	0.298 \| good
2025-07-30T11:00:00.000Z	27 \| good	4.548 \| good	20.198 \| good	18.065 \| good	0.67 \| good	0.788 \| good	0.298 \| good
2025-07-30T12:00:00.000Z	27 \| good	4.51 \| good	20.058 \| good	17.947 \| good	0.665 \| good	0.809 \| good	0.298 \| good
2025-07-30T13:00:00.000Z	22 \| good	3.792 \| good	16.408 \| good	17.945 \| good	0.615 \| good	1.763 \| good	0.303 \| good
2025-07-30T14:00:00.000Z	22 \| good	3.81 \| good	17 \| good	17.935 \| good	0.41 \| good	1.766 \| good	0.303 \| good
2025-07-30T14:00:00.000Z	22 \| good	3.81 \| good	17 \| good	17.935 \| good	0.41 \| good	1.766 \| good	0.303 \| good
2025-07-30T12:00:00.000Z	18 \| good	1.852 \| good	7.619 \| good	19.189 \| good	0.331 \| good	2.112 \| good	0.089 \| good
2025-07-30T13:00:00.000Z	19 \| good	2.368 \| good	9.686 \| good	19.705 \| good	0.347 \| good	2.024 \| good	0.089 \| good
2025-07-30T14:00:00.000Z	18 \| good	2.477 \| good	10.022 \| good	19.156 \| good	0.363 \| good	1.937 \| good	0.089 \| good
2025-07-30T15:00:00.000Z	27 \| good	4.759 \| good	20.627 \| good	18.735 \| good	0.38 \| good	1.85 \| good	0.09 \| good
2025-07-30T16:00:00.000Z	18 \| good	3.473 \| good	15.211 \| good	18.882 \| good	0.412 \| good	1.779 \| good	0.091 \| good
2025-07-30T17:00:00.000Z	18 \| good	2.872 \| good	11.943 \| good	19.353 \| good	0.444 \| good	1.709 \| good	0.093 \| good
2025-07-30T18:00:00.000Z	27 \| good	4.901 \| good	21.62 \| good	20.205 \| good	0.477 \| good	1.639 \| good	0.095 \| good
2025-07-30T19:00:00.000Z	38 \| good	6.776 \| good	29.948 \| good	20.143 \| good	0.483 \| good	1.562 \| good	0.095 \| good
2025-07-30T20:00:00.000Z	44 \| good	7.568 \| good	33.539 \| good	20.97 \| good	0.489 \| good	1.485 \| good	0.094 \| good
2025-07-30T21:00:00.000Z	33 \| good	5.952 \| good	25.817 \| good	20.263 \| good	0.496 \| good	1.408 \| good	0.094 \| good
2025-07-30T22:00:00.000Z	22 \| good	4.31 \| good	18.763 \| good	20.562 \| good	0.465 \| good	1.558 \| good	0.092 \| good
2025-07-30T23:00:00.000Z	27 \| good	4.643 \| good	19.8 \| good	19.704 \| good	0.435 \| good	1.709 \| good	0.091 \| good
2025-07-31T00:00:00.000Z	27 \| good	4.77 \| good	20.372 \| good	18.098 \| good	0.405 \| good	1.859 \| good	0.09 \| good
2025-07-31T01:00:00.000Z	22 \| good	3.577 \| good	15.902 \| good	18.563 \| good	0.375 \| good	2.586 \| good	0.09 \| good
2025-07-31T02:00:00.000Z	16 \| good	2.757 \| good	11.571 \| good	17.047 \| good	0.346 \| good	3.312 \| good	0.089 \| good
2025-07-31T03:00:00.000Z	16 \| good	3.099 \| good	12.936 \| good	17.279 \| good	0.316 \| good	4.039 \| good	0.089 \| good
2025-07-31T04:00:00.000Z	18 \| good	1.311 \| good	5.223 \| good	19.11 \| good	0.331 \| good	4.079 \| good	0.087 \| good
2025-07-31T05:00:00.000Z	19 \| good	1.923 \| good	7.966 \| good	19.749 \| good	0.345 \| good	4.118 \| good	0.085 \| good
2025-07-31T06:00:00.000Z	18 \| good	2.665 \| good	10.968 \| good	19.364 \| good	0.359 \| good	4.158 \| good	0.082 \| good
2025-07-31T07:00:00.000Z	19 \| good	2.624 \| good	10.53 \| good	20.076 \| good	0.358 \| good	3.96 \| good	0.081 \| good
2025-07-31T08:00:00.000Z	19 \| good	2.541 \| good	10.304 \| good	20.039 \| good	0.357 \| good	3.762 \| good	0.08 \| good
2025-07-31T09:00:00.000Z	19 \| good	2.706 \| good	11.269 \| good	19.851 \| good	0.357 \| good	3.563 \| good	0.079 \| good
2025-07-31T10:00:00.000Z	19 \| good	2.401 \| good	9.965 \| good	19.785 \| good	0.356 \| good	3.299 \| good	0.078 \| good
2025-07-31T11:00:00.000Z	18 \| good	3.198 \| good	13.847 \| good	19.179 \| good	0.356 \| good	3.034 \| good	0.076 \| good
2025-07-31T12:00:00.000Z	16 \| good	2.462 \| good	9.91 \| good	16.884 \| good	0.355 \| good	2.77 \| good	0.074 \| good
2025-07-31T13:00:00.000Z	16 \| good	3.048 \| good	12.884 \| good	16.872 \| good	0.382 \| good	2.624 \| good	0.075 \| good
2025-07-31T14:00:00.000Z	16 \| good	2.574 \| good	10.53 \| good	16.49 \| good	0.409 \| good	2.479 \| good	0.075 \| good
2025-07-31T15:00:00.000Z	27 \| good	4.919 \| good	21.325 \| good	15.782 \| good	0.436 \| good	2.333 \| good	0.076 \| good
2025-07-31T16:00:00.000Z	22 \| good	4.023 \| good	17.515 \| good	16.4 \| good	0.493 \| good	2.247 \| good	0.079 \| good
2025-07-31T17:00:00.000Z	22 \| good	4.424 \| good	18.91 \| good	17.058 \| good	0.55 \| good	2.161 \| good	0.082 \| good
2025-07-31T18:00:00.000Z	38 \| good	6.521 \| good	29.043 \| good	18.378 \| good	0.607 \| good	2.075 \| good	0.086 \| good
2025-07-31T19:00:00.000Z	44 \| good	7.526 \| good	33.133 \| good	18.707 \| good	0.646 \| good	1.995 \| good	0.087 \| good
2025-07-31T20:00:00.000Z	44 \| good	7.715 \| good	33.966 \| good	19.238 \| good	0.685 \| good	1.915 \| good	0.088 \| good
2025-07-31T21:00:00.000Z	38 \| good	6.622 \| good	29.493 \| good	20.521 \| good	0.724 \| good	1.836 \| good	0.089 \| good
2025-07-31T22:00:00.000Z	38 \| good	7.354 \| good	32.445 \| good	21.46 \| good	0.666 \| good	1.933 \| good	0.088 \| good
2025-07-31T23:00:00.000Z	38 \| good	7.057 \| good	31.034 \| good	21.22 \| good	0.608 \| good	2.031 \| good	0.088 \| good
2025-08-01T00:00:00.000Z	33 \| good	5.874 \| good	25.447 \| good	19.562 \| good	0.55 \| good	2.128 \| good	0.087 \| good
2025-08-01T01:00:00.000Z	22 \| good	4.043 \| good	17.721 \| good	18.752 \| good	0.498 \| good	2.955 \| good	0.089 \| good
2025-08-01T02:00:00.000Z	22 \| good	3.87 \| good	16.945 \| good	18.09 \| good	0.446 \| good	3.782 \| good	0.09 \| good
2025-08-01T03:00:00.000Z	27 \| good	4.752 \| good	20.668 \| good	17.234 \| good	0.395 \| good	4.609 \| good	0.091 \| good
2025-08-01T04:00:00.000Z	18 \| good	3.362 \| good	14.489 \| good	19.114 \| good	0.422 \| good	4.684 \| good	0.091 \| good
2025-08-01T05:00:00.000Z	19 \| good	3.104 \| good	12.807 \| good	19.809 \| good	0.449 \| good	4.76 \| good	0.091 \| good
2025-08-01T06:00:00.000Z	49 \| good	8.639 \| good	11.814 \| good	13.396 \| good	0.479 \| good	4.869 \| good	0.091 \| good
2025-08-01T07:00:00.000Z	22 \| good	3.857 \| good	16.806 \| good	20.232 \| good	0.465 \| good	4.445 \| good	0.09 \| good
2025-08-01T08:00:00.000Z	18 \| good	3.016 \| good	12.654 \| good	18.892 \| good	0.454 \| good	4.055 \| good	0.088 \| good
2025-08-01T09:00:00.000Z	22 \| good	3.864 \| good	16.825 \| good	19.784 \| good	0.443 \| good	3.665 \| good	0.087 \| good
2025-08-01T10:00:00.000Z	18 \| good	2.68 \| good	10.906 \| good	19.006 \| good	0.433 \| good	3.358 \| good	0.085 \| good
2025-08-01T11:00:00.000Z	22 \| good	3.629 \| good	15.949 \| good	18.185 \| good	0.424 \| good	3.051 \| good	0.083 \| good

San Francisco

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near San Francisco, California

0.18ppm

How accurate is California, USA air quality data?

The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

Air quality levels in US

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

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

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Frequently asked questions

How frequently does the air quality data for San Francisco, California get updated?

Air quality updates for San Francisco, California are available every hour.

What time in the past 24 hours saw the poorest air quality in San Francisco, California?

San Francisco, California experienced its worst air quality at 11:00:00, 2025-07-29.

When was air quality in San Francisco, California the best over the past 24 hours?

The best air quality in San Francisco, California was observed at 07:00:00 on 2025-07-30.

What is the air quality in San Francisco, California right now?

The air quality in San Francisco, California right now is Good, with an AQI of 27.

What pollutant is most frequently found in San Francisco, California?

In San Francisco, California, PM2.5 is the most frequently found pollutant.

What can I do if the air quality in San Francisco, California is poor?

When air quality in San Francisco, California is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in San Francisco, California right now?

San Francisco, California currently has a PM_2.5 concentration of 5.36 μg/m³.

What is the current level of PM₁₀ in San Francisco, California?

San Francisco, California currently has a PM₁₀ concentration of 23.309 μg/m³.

What is the current level of carbon monoxide (CO) in San Francisco, California?

The current carbon monoxide (CO) level in San Francisco, California is 0.298 ppm.

What is the current level of sulfur dioxide (SO₂) in San Francisco, California?

The current sulfur dioxide (SO₂) concentration in San Francisco, California is 0.636 ppb.

What is the current level of ozone (O₃) in San Francisco, California?

San Francisco, California currently has an ozone (O₃) concentration of 18.97 ppm.

What is the current level of nitrogen dioxide (NO₂) in San Francisco, California?

The current level of nitrogen dioxide (NO₂) in San Francisco, California is 0.867 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T15:00:00.000Z	22 \| good	3.585 \| good	15.936 \| good	15.913 \| good	0.554 \| good	2.23 \| good	0.315 \| good
2025-07-28T16:00:00.000Z	22 \| good	4.032 \| good	17.606 \| good	15.874 \| good	0.649 \| good	3.133 \| good	0.409 \| good
2025-07-28T17:00:00.000Z	27 \| good	5.027 \| good	21.6 \| good	15.837 \| good	0.735 \| good	2.499 \| good	0.409 \| good
2025-07-28T18:00:00.000Z	27 \| good	5.472 \| good	23.372 \| good	16.77 \| good	0.668 \| good	2.302 \| good	0.4 \| good
2025-07-28T19:00:00.000Z	27 \| good	4.911 \| good	21.92 \| good	16.827 \| good	0.696 \| good	2.214 \| good	0.306 \| good
2025-07-28T20:00:00.000Z	27 \| good	4.624 \| good	20.462 \| good	16.978 \| good	0.688 \| good	1.906 \| good	0.304 \| good
2025-07-28T21:00:00.000Z	27 \| good	4.624 \| good	20.462 \| good	17.009 \| good	0.739 \| good	1.906 \| good	0.304 \| good
2025-07-28T22:00:00.000Z	38 \| good	6.597 \| good	29.351 \| good	17.963 \| good	0.689 \| good	2.065 \| good	0.302 \| good
2025-07-28T23:00:00.000Z	33 \| good	6.219 \| good	27.524 \| good	18.972 \| good	0.389 \| good	1.767 \| good	0.302 \| good
2025-07-29T00:00:00.000Z	38 \| good	7.093 \| good	31.403 \| good	20.003 \| good	0.432 \| good	2.06 \| good	0.302 \| good
2025-07-29T01:00:00.000Z	38 \| good	7.074 \| good	31.32 \| good	20.121 \| good	0.439 \| good	2.062 \| good	0.302 \| good
2025-07-29T02:00:00.000Z	33 \| good	5.866 \| good	25.787 \| good	21.005 \| good	0.401 \| good	1.528 \| good	0.299 \| good
2025-07-29T03:00:00.000Z	27 \| good	4.977 \| good	21.818 \| good	19.153 \| good	0.384 \| good	2.718 \| good	0.298 \| good
2025-07-29T04:00:00.000Z	22 \| good	4.196 \| good	18.372 \| good	19.119 \| good	0.708 \| good	2.299 \| good	0.3 \| good
2025-07-29T05:00:00.000Z	18 \| good	3.262 \| good	13.701 \| good	19.041 \| good	0.691 \| good	2.049 \| good	0.305 \| good
2025-07-29T06:00:00.000Z	27 \| good	5.03 \| good	21.628 \| good	18.963 \| good	0.675 \| good	2.323 \| good	0.305 \| good
2025-07-29T07:00:00.000Z	27 \| good	5.021 \| good	21.604 \| good	17.969 \| good	0.687 \| good	1.816 \| good	0.3 \| good
2025-07-29T08:00:00.000Z	33 \| good	5.936 \| good	27.124 \| good	17.854 \| good	0.686 \| good	1.816 \| good	0.3 \| good
2025-07-29T09:00:00.000Z	44 \| good	7.583 \| good	33.51 \| good	17.911 \| good	0.696 \| good	1.109 \| good	0.298 \| good
2025-07-29T10:00:00.000Z	44 \| good	7.583 \| good	33.51 \| good	17.85 \| good	0.624 \| good	1.164 \| good	0.296 \| good
2025-07-29T11:00:00.000Z	38 \| good	6.761 \| good	29.854 \| good	16.91 \| good	0.619 \| good	1.164 \| good	0.296 \| good
2025-07-29T12:00:00.000Z	22 \| good	4.373 \| good	19.724 \| good	15.909 \| good	0.621 \| good	1.363 \| good	0.296 \| good
2025-07-29T13:00:00.000Z	22 \| good	4.373 \| good	19.724 \| good	16.017 \| good	0.484 \| good	1.805 \| good	0.3 \| good
2025-07-29T14:00:00.000Z	33 \| good	6.08 \| good	27.312 \| good	13.935 \| good	0.231 \| good	2.717 \| good	0.304 \| good
2025-07-29T15:00:00.000Z	33 \| good	6.047 \| good	27.186 \| good	15.737 \| good	0.407 \| good	2.732 \| good	0.306 \| good
2025-07-29T16:00:00.000Z	33 \| good	5.565 \| good	24.3 \| good	14.894 \| good	0.241 \| good	3.065 \| good	0.302 \| good
2025-07-29T17:00:00.000Z	33 \| good	6.438 \| good	28.993 \| good	14.797 \| good	0.252 \| good	2.489 \| good	0.307 \| good
2025-07-29T18:00:00.000Z	33 \| good	6.272 \| good	27.746 \| good	15.665 \| good	0.247 \| good	2.28 \| good	0.306 \| good
2025-07-29T19:00:00.000Z	27 \| good	4.887 \| good	21.696 \| good	15.799 \| good	0.489 \| good	2.678 \| good	0.306 \| good
2025-07-29T20:00:00.000Z	27 \| good	4.657 \| good	20.991 \| good	16.009 \| good	0.276 \| good	2.163 \| good	0.304 \| good
2025-07-29T21:00:00.000Z	27 \| good	5.459 \| good	23.645 \| good	17.051 \| good	0.223 \| good	1.6 \| good	0.304 \| good
2025-07-29T22:00:00.000Z	38 \| good	7.182 \| good	31.82 \| good	17.067 \| good	0.431 \| good	1.644 \| good	0.304 \| good
2025-07-29T23:00:00.000Z	38 \| good	7.182 \| good	31.82 \| good	18.009 \| good	0.43 \| good	1.644 \| good	0.304 \| good
2025-07-30T00:00:00.000Z	33 \| good	6.239 \| good	28.023 \| good	16.176 \| good	0.465 \| good	1.366 \| good	0.302 \| good
2025-07-30T01:00:00.000Z	33 \| good	5.741 \| good	25.12 \| good	17.044 \| good	2.102 \| good	1.366 \| good	0.302 \| good
2025-07-30T02:00:00.000Z	27 \| good	5.02 \| good	22.416 \| good	17.076 \| good	12.44 \| good	1.473 \| good	0.298 \| good
2025-07-30T03:00:00.000Z	22 \| good	4.351 \| good	18.669 \| good	17.2 \| good	0.35 \| good	3.354 \| good	0.1 \| good
2025-07-30T04:00:00.000Z	33 \| good	6.428 \| good	28.579 \| good	16.975 \| good	2.408 \| good	2.037 \| good	0.3 \| good
2025-07-30T05:00:00.000Z	27 \| good	5.233 \| good	22.647 \| good	17.94 \| good	1.478 \| good	1.6 \| good	0.3 \| good
2025-07-30T06:00:00.000Z	17 \| good	3.206 \| good	13.01 \| good	17.903 \| good	0.735 \| good	1.231 \| good	0.302 \| good
2025-07-30T07:00:00.000Z	17 \| good	3.206 \| good	13.01 \| good	17.998 \| good	0.705 \| good	1.231 \| good	0.302 \| good
2025-07-30T08:00:00.000Z	22 \| good	3.894 \| good	16.87 \| good	18.044 \| good	0.607 \| good	0.848 \| good	0.302 \| good
2025-07-30T09:00:00.000Z	27 \| good	5.36 \| good	23.309 \| good	18.93 \| good	0.561 \| good	0.688 \| good	0.3 \| good
2025-07-30T10:00:00.000Z	27 \| good	5.36 \| good	23.309 \| good	18.97 \| good	0.636 \| good	0.867 \| good	0.298 \| good
2025-07-30T11:00:00.000Z	27 \| good	4.548 \| good	20.198 \| good	18.065 \| good	0.67 \| good	0.788 \| good	0.298 \| good
2025-07-30T12:00:00.000Z	27 \| good	4.51 \| good	20.058 \| good	17.947 \| good	0.665 \| good	0.809 \| good	0.298 \| good
2025-07-30T13:00:00.000Z	22 \| good	3.792 \| good	16.408 \| good	17.945 \| good	0.615 \| good	1.763 \| good	0.303 \| good
2025-07-30T14:00:00.000Z	22 \| good	3.81 \| good	17 \| good	17.935 \| good	0.41 \| good	1.766 \| good	0.303 \| good
2025-07-30T14:00:00.000Z	22 \| good	3.81 \| good	17 \| good	17.935 \| good	0.41 \| good	1.766 \| good	0.303 \| good
2025-07-30T12:00:00.000Z	18 \| good	1.852 \| good	7.619 \| good	19.189 \| good	0.331 \| good	2.112 \| good	0.089 \| good
2025-07-30T13:00:00.000Z	19 \| good	2.368 \| good	9.686 \| good	19.705 \| good	0.347 \| good	2.024 \| good	0.089 \| good
2025-07-30T14:00:00.000Z	18 \| good	2.477 \| good	10.022 \| good	19.156 \| good	0.363 \| good	1.937 \| good	0.089 \| good
2025-07-30T15:00:00.000Z	27 \| good	4.759 \| good	20.627 \| good	18.735 \| good	0.38 \| good	1.85 \| good	0.09 \| good
2025-07-30T16:00:00.000Z	18 \| good	3.473 \| good	15.211 \| good	18.882 \| good	0.412 \| good	1.779 \| good	0.091 \| good
2025-07-30T17:00:00.000Z	18 \| good	2.872 \| good	11.943 \| good	19.353 \| good	0.444 \| good	1.709 \| good	0.093 \| good
2025-07-30T18:00:00.000Z	27 \| good	4.901 \| good	21.62 \| good	20.205 \| good	0.477 \| good	1.639 \| good	0.095 \| good
2025-07-30T19:00:00.000Z	38 \| good	6.776 \| good	29.948 \| good	20.143 \| good	0.483 \| good	1.562 \| good	0.095 \| good
2025-07-30T20:00:00.000Z	44 \| good	7.568 \| good	33.539 \| good	20.97 \| good	0.489 \| good	1.485 \| good	0.094 \| good
2025-07-30T21:00:00.000Z	33 \| good	5.952 \| good	25.817 \| good	20.263 \| good	0.496 \| good	1.408 \| good	0.094 \| good
2025-07-30T22:00:00.000Z	22 \| good	4.31 \| good	18.763 \| good	20.562 \| good	0.465 \| good	1.558 \| good	0.092 \| good
2025-07-30T23:00:00.000Z	27 \| good	4.643 \| good	19.8 \| good	19.704 \| good	0.435 \| good	1.709 \| good	0.091 \| good
2025-07-31T00:00:00.000Z	27 \| good	4.77 \| good	20.372 \| good	18.098 \| good	0.405 \| good	1.859 \| good	0.09 \| good
2025-07-31T01:00:00.000Z	22 \| good	3.577 \| good	15.902 \| good	18.563 \| good	0.375 \| good	2.586 \| good	0.09 \| good
2025-07-31T02:00:00.000Z	16 \| good	2.757 \| good	11.571 \| good	17.047 \| good	0.346 \| good	3.312 \| good	0.089 \| good
2025-07-31T03:00:00.000Z	16 \| good	3.099 \| good	12.936 \| good	17.279 \| good	0.316 \| good	4.039 \| good	0.089 \| good
2025-07-31T04:00:00.000Z	18 \| good	1.311 \| good	5.223 \| good	19.11 \| good	0.331 \| good	4.079 \| good	0.087 \| good
2025-07-31T05:00:00.000Z	19 \| good	1.923 \| good	7.966 \| good	19.749 \| good	0.345 \| good	4.118 \| good	0.085 \| good
2025-07-31T06:00:00.000Z	18 \| good	2.665 \| good	10.968 \| good	19.364 \| good	0.359 \| good	4.158 \| good	0.082 \| good
2025-07-31T07:00:00.000Z	19 \| good	2.624 \| good	10.53 \| good	20.076 \| good	0.358 \| good	3.96 \| good	0.081 \| good
2025-07-31T08:00:00.000Z	19 \| good	2.541 \| good	10.304 \| good	20.039 \| good	0.357 \| good	3.762 \| good	0.08 \| good
2025-07-31T09:00:00.000Z	19 \| good	2.706 \| good	11.269 \| good	19.851 \| good	0.357 \| good	3.563 \| good	0.079 \| good
2025-07-31T10:00:00.000Z	19 \| good	2.401 \| good	9.965 \| good	19.785 \| good	0.356 \| good	3.299 \| good	0.078 \| good
2025-07-31T11:00:00.000Z	18 \| good	3.198 \| good	13.847 \| good	19.179 \| good	0.356 \| good	3.034 \| good	0.076 \| good
2025-07-31T12:00:00.000Z	16 \| good	2.462 \| good	9.91 \| good	16.884 \| good	0.355 \| good	2.77 \| good	0.074 \| good
2025-07-31T13:00:00.000Z	16 \| good	3.048 \| good	12.884 \| good	16.872 \| good	0.382 \| good	2.624 \| good	0.075 \| good
2025-07-31T14:00:00.000Z	16 \| good	2.574 \| good	10.53 \| good	16.49 \| good	0.409 \| good	2.479 \| good	0.075 \| good
2025-07-31T15:00:00.000Z	27 \| good	4.919 \| good	21.325 \| good	15.782 \| good	0.436 \| good	2.333 \| good	0.076 \| good
2025-07-31T16:00:00.000Z	22 \| good	4.023 \| good	17.515 \| good	16.4 \| good	0.493 \| good	2.247 \| good	0.079 \| good
2025-07-31T17:00:00.000Z	22 \| good	4.424 \| good	18.91 \| good	17.058 \| good	0.55 \| good	2.161 \| good	0.082 \| good
2025-07-31T18:00:00.000Z	38 \| good	6.521 \| good	29.043 \| good	18.378 \| good	0.607 \| good	2.075 \| good	0.086 \| good
2025-07-31T19:00:00.000Z	44 \| good	7.526 \| good	33.133 \| good	18.707 \| good	0.646 \| good	1.995 \| good	0.087 \| good
2025-07-31T20:00:00.000Z	44 \| good	7.715 \| good	33.966 \| good	19.238 \| good	0.685 \| good	1.915 \| good	0.088 \| good
2025-07-31T21:00:00.000Z	38 \| good	6.622 \| good	29.493 \| good	20.521 \| good	0.724 \| good	1.836 \| good	0.089 \| good
2025-07-31T22:00:00.000Z	38 \| good	7.354 \| good	32.445 \| good	21.46 \| good	0.666 \| good	1.933 \| good	0.088 \| good
2025-07-31T23:00:00.000Z	38 \| good	7.057 \| good	31.034 \| good	21.22 \| good	0.608 \| good	2.031 \| good	0.088 \| good
2025-08-01T00:00:00.000Z	33 \| good	5.874 \| good	25.447 \| good	19.562 \| good	0.55 \| good	2.128 \| good	0.087 \| good
2025-08-01T01:00:00.000Z	22 \| good	4.043 \| good	17.721 \| good	18.752 \| good	0.498 \| good	2.955 \| good	0.089 \| good
2025-08-01T02:00:00.000Z	22 \| good	3.87 \| good	16.945 \| good	18.09 \| good	0.446 \| good	3.782 \| good	0.09 \| good
2025-08-01T03:00:00.000Z	27 \| good	4.752 \| good	20.668 \| good	17.234 \| good	0.395 \| good	4.609 \| good	0.091 \| good
2025-08-01T04:00:00.000Z	18 \| good	3.362 \| good	14.489 \| good	19.114 \| good	0.422 \| good	4.684 \| good	0.091 \| good
2025-08-01T05:00:00.000Z	19 \| good	3.104 \| good	12.807 \| good	19.809 \| good	0.449 \| good	4.76 \| good	0.091 \| good
2025-08-01T06:00:00.000Z	49 \| good	8.639 \| good	11.814 \| good	13.396 \| good	0.479 \| good	4.869 \| good	0.091 \| good
2025-08-01T07:00:00.000Z	22 \| good	3.857 \| good	16.806 \| good	20.232 \| good	0.465 \| good	4.445 \| good	0.09 \| good
2025-08-01T08:00:00.000Z	18 \| good	3.016 \| good	12.654 \| good	18.892 \| good	0.454 \| good	4.055 \| good	0.088 \| good
2025-08-01T09:00:00.000Z	22 \| good	3.864 \| good	16.825 \| good	19.784 \| good	0.443 \| good	3.665 \| good	0.087 \| good
2025-08-01T10:00:00.000Z	18 \| good	2.68 \| good	10.906 \| good	19.006 \| good	0.433 \| good	3.358 \| good	0.085 \| good
2025-08-01T11:00:00.000Z	22 \| good	3.629 \| good	15.949 \| good	18.185 \| good	0.424 \| good	3.051 \| good	0.083 \| good

Current air quality index in San Francisco, California today

Common air pollutants in San Francisco, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live San Francisco, California air quality forecast and history

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near San Francisco, California

Air quality in nearby cities

Daly City, California

Alameda, California

South San Francisco, California

Oakland, California

Emeryville, California

TamalpaisHomestead Valley, California

How accurate is California, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently does the air quality data for San Francisco, California get updated?

What time in the past 24 hours saw the poorest air quality in San Francisco, California?

When was air quality in San Francisco, California the best over the past 24 hours?

What is the air quality in San Francisco, California right now?

What pollutant is most frequently found in San Francisco, California?

What can I do if the air quality in San Francisco, California is poor?

What is the PM2.5 concentration in San Francisco, California right now?

What is the current level of PM10 in San Francisco, California?

What is the current level of carbon monoxide (CO) in San Francisco, California?

What is the current level of sulfur dioxide (SO2) in San Francisco, California?

What is the current level of ozone (O3) in San Francisco, California?

What is the current level of nitrogen dioxide (NO2) in San Francisco, California?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 concentration in San Francisco, California right now?

What is the current level of PM₁₀ in San Francisco, California?

What is the current level of sulfur dioxide (SO₂) in San Francisco, California?

What is the current level of ozone (O₃) in San Francisco, California?

What is the current level of nitrogen dioxide (NO₂) in San Francisco, California?