What is the current level of PM10 in Westmont, California?

Westmont, California currently has a PM10 concentration of 26.651 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Westmont, California is 0.679 ppb.

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

Westmont, California currently has an ozone (O3) concentration of 21.532 ppm.

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

The current level of nitrogen dioxide (NO2) in Westmont, California is 18.38 ppb.

Current air quality index in Westmont, California today

Q: What is the PM2.5 concentration in Westmont, California right now?

Westmont, California currently has a PM2.5 concentration of 7.256 μg/m3.

Stay updated with real-time air quality in Westmont, 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

Westmont, California

Last updated: ... (Local time)

Common air pollutants in Westmont, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.26 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

26.65 μg/m³

155

255

425

605+

Ozone (O₃)

21.53 ppb

201

201+

Sulfur Dioxide (SO₂)

0.68 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

18.38 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Westmont, California

Scroll To Air Quality Map

Track live Westmont, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-22T16:00:00.000Z	24 \| good	4.458 \| good	19.416 \| good	25.641 \| good	0.58 \| good	12.665 \| good	0.299 \| good
2026-04-22T17:00:00.000Z	28 \| good	3.601 \| good	13.066 \| good	29.78 \| good	0.421 \| good	6.935 \| good	0.249 \| good
2026-04-22T18:00:00.000Z	31 \| good	3.378 \| good	12.359 \| good	32.533 \| good	0.491 \| good	3.766 \| good	0.205 \| good
2026-04-22T19:00:00.000Z	36 \| good	3.277 \| good	11.656 \| good	39.449 \| good	0.458 \| good	3.045 \| good	0.205 \| good
2026-04-22T20:00:00.000Z	41 \| good	2.786 \| good	12.322 \| good	43.885 \| good	0.498 \| good	4.848 \| good	0.193 \| good
2026-04-22T21:00:00.000Z	43 \| good	3.011 \| good	11.965 \| good	46.358 \| good	0.472 \| good	5.701 \| good	0.193 \| good
2026-04-22T22:00:00.000Z	44 \| good	3.211 \| good	42.782 \| good	47.287 \| good	0.46 \| good	6.447 \| good	0.161 \| good
2026-04-22T23:00:00.000Z	44 \| good	3.321 \| good	30.108 \| good	46.924 \| good	0.439 \| good	5.417 \| good	0.161 \| good
2026-04-23T00:00:00.000Z	47 \| good	2.892 \| good	13.102 \| good	50.566 \| good	0.408 \| good	5.155 \| good	0.168 \| good
2026-04-23T01:00:00.000Z	45 \| good	3.193 \| good	19.932 \| good	48.807 \| good	0.371 \| good	4.753 \| good	0.168 \| good
2026-04-23T02:00:00.000Z	44 \| good	3.42 \| good	19.81 \| good	46.532 \| good	0.409 \| good	3.013 \| good	0.168 \| good
2026-04-23T03:00:00.000Z	40 \| good	3.001 \| good	14.706 \| good	43.002 \| good	0.369 \| good	3.712 \| good	0.18 \| good
2026-04-23T04:00:00.000Z	38 \| good	3.332 \| good	13.788 \| good	40.901 \| good	0.405 \| good	4.75 \| good	0.212 \| good
2026-04-23T05:00:00.000Z	35 \| good	4.974 \| good	19.676 \| good	38.284 \| good	0.641 \| good	9.705 \| good	0.212 \| good
2026-04-23T06:00:00.000Z	28 \| good	5.344 \| good	12.197 \| good	29.77 \| good	0.589 \| good	13.68 \| good	0.268 \| good
2026-04-23T07:00:00.000Z	33 \| good	5.947 \| good	20.685 \| good	32.023 \| good	0.528 \| good	15.739 \| good	0.299 \| good
2026-04-23T08:00:00.000Z	27 \| good	5.449 \| good	23.778 \| good	23.188 \| good	0.56 \| good	12.755 \| good	0.268 \| good
2026-04-23T09:00:00.000Z	22 \| good	3.946 \| good	17.96 \| good	20.471 \| good	0.558 \| good	9.739 \| good	0.262 \| good
2026-04-23T10:00:00.000Z	22 \| good	4.167 \| good	16.917 \| good	14.348 \| good	0.512 \| good	16.88 \| good	0.287 \| good
2026-04-23T11:00:00.000Z	27 \| good	5.028 \| good	20.726 \| good	12.548 \| good	0.655 \| good	17.131 \| good	0.281 \| good
2026-04-23T12:00:00.000Z	27 \| good	5.192 \| good	16.075 \| good	12.562 \| good	0.476 \| good	16.637 \| good	0.287 \| good
2026-04-23T13:00:00.000Z	33 \| good	6.026 \| good	25.568 \| good	12.496 \| good	0.611 \| good	21.949 \| good	0.518 \| good
2026-04-23T14:00:00.000Z	44 \| good	7.921 \| good	39.603 \| good	10.773 \| good	0.559 \| good	26.565 \| good	0.623 \| good
2026-04-23T15:00:00.000Z	38 \| good	6.979 \| good	30.625 \| good	16.64 \| good	0.606 \| good	18.133 \| good	0.449 \| good
2026-04-23T16:00:00.000Z	38 \| good	7.162 \| good	32.661 \| good	21.723 \| good	0.635 \| good	9.18 \| good	0.318 \| good
2026-04-23T17:00:00.000Z	38 \| good	6.707 \| good	29.657 \| good	33.176 \| good	0.608 \| good	6.262 \| good	0.262 \| good
2026-04-23T18:00:00.000Z	38 \| good	6.767 \| good	33.602 \| good	36.628 \| good	0.577 \| good	6.455 \| good	0.256 \| good
2026-04-23T19:00:00.000Z	39 \| good	6.598 \| good	29.48 \| good	42.109 \| good	0.613 \| good	7.116 \| good	0.211 \| good
2026-04-23T20:00:00.000Z	41 \| good	7.23 \| good	25.936 \| good	43.652 \| good	0.633 \| good	7.053 \| good	0.199 \| good
2026-04-23T21:00:00.000Z	46 \| good	6.856 \| good	21.54 \| good	49.546 \| good	0.634 \| good	7.146 \| good	0.249 \| good
2026-04-23T22:00:00.000Z	47 \| good	7.764 \| good	26.21 \| good	50.917 \| good	0.705 \| good	6.154 \| good	0.249 \| good
2026-04-23T23:00:00.000Z	49 \| good	7.504 \| good	23.831 \| good	53.437 \| good	0.763 \| good	6.76 \| good	0.249 \| good
2026-04-24T00:00:00.000Z	51 \| moderate	6.714 \| good	30.11 \| good	55.097 \| fine	0.702 \| good	6 \| good	0.256 \| good
2026-04-24T01:00:00.000Z	50 \| good	4.6 \| good	19.373 \| good	54.47 \| good	0.619 \| good	3.271 \| good	0.224 \| good
2026-04-24T02:00:00.000Z	45 \| good	3.764 \| good	12.59 \| good	49.464 \| good	0.563 \| good	3.948 \| good	0.193 \| good
2026-04-24T03:00:00.000Z	43 \| good	4.992 \| good	21.687 \| good	46.424 \| good	2.621 \| good	13.785 \| good	0.172 \| good
2026-04-24T04:00:00.000Z	43 \| good	3.897 \| good	17.045 \| good	46.389 \| good	0.541 \| good	5.901 \| good	0.268 \| good
2026-04-24T05:00:00.000Z	38 \| good	4.007 \| good	13.292 \| good	41.46 \| good	0.687 \| good	12.313 \| good	0.268 \| good
2026-04-24T06:00:00.000Z	33 \| good	4.325 \| good	15.968 \| good	35.588 \| good	0.702 \| good	15.299 \| good	0.312 \| good
2026-04-24T07:00:00.000Z	32 \| good	5.205 \| good	20.881 \| good	34.666 \| good	0.714 \| good	17.012 \| good	0.318 \| good
2026-04-24T08:00:00.000Z	22 \| good	4.49 \| good	20.012 \| good	23.004 \| good	0.69 \| good	15.466 \| good	0.318 \| good
2026-04-24T09:00:00.000Z	27 \| good	4.569 \| good	16.008 \| good	23.817 \| good	0.72 \| good	16.898 \| good	0.237 \| good
2026-04-24T10:00:00.000Z	33 \| good	5.526 \| good	21.124 \| good	19.025 \| good	0.691 \| good	25.912 \| good	0.274 \| good
2026-04-24T11:00:00.000Z	27 \| good	4.877 \| good	14.699 \| good	16.635 \| good	0.791 \| good	25.096 \| good	0.275 \| good
2026-04-24T12:00:00.000Z	27 \| good	5.068 \| good	14.694 \| good	24.319 \| good	0.585 \| good	28.475 \| good	0.319 \| good
2026-04-24T13:00:00.000Z	25 \| good	3.948 \| good	14.61 \| good	18.217 \| good	0.612 \| good	27.412 \| good	0.418 \| good
2026-04-24T14:00:00.000Z	44 \| good	7.509 \| good	20.1 \| good	26.938 \| good	0.696 \| good	27.296 \| good	0.505 \| good
2026-04-24T15:00:00.000Z	44 \| good	7.696 \| good	20.514 \| good	16.877 \| good	0.794 \| good	20.43 \| good	0.374 \| good
2026-04-24T15:00:00.000Z	38 \| good	7.256 \| good	26.651 \| good	21.532 \| good	0.679 \| good	18.38 \| good	0.319 \| good
2026-04-24T16:00:00.000Z	41 \| good	6.143 \| good	27.215 \| good	44.366 \| good	4.828 \| good	14.133 \| good	0.188 \| good
2026-04-24T17:00:00.000Z	44 \| good	6.187 \| good	27.39 \| good	47.766 \| good	4.648 \| good	10.587 \| good	0.17 \| good
2026-04-24T18:00:00.000Z	47 \| good	5.971 \| good	25.852 \| good	50.809 \| good	4.469 \| good	7.041 \| good	0.152 \| good
2026-04-24T19:00:00.000Z	49 \| good	6.835 \| good	30.303 \| good	52.689 \| good	4.149 \| good	5.997 \| good	0.147 \| good
2026-04-24T20:00:00.000Z	50 \| good	6.147 \| good	27.206 \| good	53.551 \| good	3.83 \| good	4.953 \| good	0.142 \| good
2026-04-24T21:00:00.000Z	51 \| moderate	6.246 \| good	27.611 \| good	54.537 \| good	3.51 \| good	3.909 \| good	0.137 \| good
2026-04-24T22:00:00.000Z	54 \| moderate	5.804 \| good	25.038 \| good	55.966 \| fine	3.423 \| good	4.089 \| good	0.137 \| good
2026-04-24T23:00:00.000Z	58 \| moderate	5.686 \| good	24.361 \| good	56.552 \| fine	3.335 \| good	4.268 \| good	0.138 \| good
2026-04-25T00:00:00.000Z	51 \| moderate	7.945 \| good	35.005 \| good	55.072 \| fine	3.248 \| good	4.447 \| good	0.138 \| good
2026-04-25T01:00:00.000Z	51 \| moderate	9.472 \| good	42.113 \| good	55.105 \| fine	3.216 \| good	6.217 \| good	0.142 \| good
2026-04-25T02:00:00.000Z	45 \| good	8.111 \| good	35.73 \| good	49.253 \| good	3.184 \| good	7.986 \| good	0.147 \| good
2026-04-25T03:00:00.000Z	41 \| good	6.415 \| good	28.294 \| good	44.325 \| good	3.152 \| good	9.756 \| good	0.151 \| good
2026-04-25T04:00:00.000Z	38 \| good	5.557 \| good	24.12 \| good	41.438 \| good	3.257 \| good	12.446 \| good	0.157 \| good
2026-04-25T05:00:00.000Z	37 \| good	4.611 \| good	20.007 \| good	39.847 \| good	3.362 \| good	15.136 \| good	0.163 \| good
2026-04-25T06:00:00.000Z	34 \| good	4.13 \| good	18.109 \| good	37.361 \| good	3.466 \| good	17.826 \| good	0.17 \| good
2026-04-25T07:00:00.000Z	34 \| good	3.947 \| good	17.421 \| good	37.229 \| good	3.415 \| good	19.456 \| good	0.176 \| good
2026-04-25T08:00:00.000Z	32 \| good	5.023 \| good	21.768 \| good	35.061 \| good	3.364 \| good	21.086 \| good	0.182 \| good
2026-04-25T09:00:00.000Z	31 \| good	4.516 \| good	19.626 \| good	32.923 \| good	3.314 \| good	22.716 \| good	0.187 \| good
2026-04-25T10:00:00.000Z	29 \| good	4.842 \| good	20.886 \| good	31.304 \| good	3.761 \| good	21.449 \| good	0.18 \| good
2026-04-25T11:00:00.000Z	28 \| good	4.537 \| good	19.809 \| good	30.158 \| good	4.209 \| good	20.182 \| good	0.173 \| good
2026-04-25T12:00:00.000Z	27 \| good	4.513 \| good	19.829 \| good	29.226 \| good	4.657 \| good	18.915 \| good	0.167 \| good
2026-04-25T13:00:00.000Z	25 \| good	4.045 \| good	17.689 \| good	26.843 \| good	5.022 \| good	16.913 \| good	0.163 \| good
2026-04-25T14:00:00.000Z	31 \| good	4.226 \| good	18.478 \| good	33.212 \| good	5.388 \| good	14.91 \| good	0.159 \| good
2026-04-25T15:00:00.000Z	37 \| good	3.166 \| good	13.695 \| good	39.524 \| good	5.753 \| good	12.908 \| good	0.155 \| good
2026-04-25T16:00:00.000Z	39 \| good	2.468 \| good	10.242 \| good	41.682 \| good	5.21 \| good	11.044 \| good	0.15 \| good
2026-04-25T17:00:00.000Z	42 \| good	2.198 \| good	8.969 \| good	45.375 \| good	4.668 \| good	9.181 \| good	0.144 \| good
2026-04-25T18:00:00.000Z	45 \| good	2.925 \| good	11.925 \| good	49.485 \| good	4.125 \| good	7.317 \| good	0.139 \| good
2026-04-25T19:00:00.000Z	48 \| good	4.299 \| good	18.782 \| good	52.285 \| good	3.601 \| good	5.99 \| good	0.135 \| good
2026-04-25T20:00:00.000Z	49 \| good	3.916 \| good	17.019 \| good	52.844 \| good	3.077 \| good	4.663 \| good	0.131 \| good
2026-04-25T21:00:00.000Z	50 \| good	3.904 \| good	17.149 \| good	53.754 \| good	2.552 \| good	3.336 \| good	0.126 \| good
2026-04-25T22:00:00.000Z	50 \| good	3.725 \| good	16.358 \| good	54.082 \| good	2.164 \| good	3.405 \| good	0.124 \| good
2026-04-25T23:00:00.000Z	48 \| good	2.927 \| good	11.961 \| good	51.708 \| good	1.776 \| good	3.474 \| good	0.122 \| good
2026-04-26T00:00:00.000Z	45 \| good	3.682 \| good	16.186 \| good	49.368 \| good	1.387 \| good	3.543 \| good	0.12 \| good
2026-04-26T01:00:00.000Z	45 \| good	3.077 \| good	13.339 \| good	48.768 \| good	1.469 \| good	4.24 \| good	0.121 \| good
2026-04-26T02:00:00.000Z	41 \| good	5.109 \| good	22.012 \| good	43.895 \| good	1.55 \| good	4.937 \| good	0.123 \| good
2026-04-26T03:00:00.000Z	43 \| good	5.085 \| good	22.009 \| good	46.442 \| good	1.632 \| good	5.634 \| good	0.124 \| good
2026-04-26T04:00:00.000Z	38 \| good	5.781 \| good	25.274 \| good	40.763 \| good	1.754 \| good	6.395 \| good	0.125 \| good
2026-04-26T05:00:00.000Z	33 \| good	5.114 \| good	22.204 \| good	36.282 \| good	1.876 \| good	7.155 \| good	0.126 \| good
2026-04-26T06:00:00.000Z	31 \| good	3.158 \| good	13.427 \| good	32.773 \| good	1.999 \| good	7.915 \| good	0.127 \| good
2026-04-26T07:00:00.000Z	31 \| good	2.381 \| good	9.894 \| good	32.905 \| good	1.852 \| good	7.499 \| good	0.126 \| good
2026-04-26T08:00:00.000Z	31 \| good	2.794 \| good	11.44 \| good	33.187 \| good	1.706 \| good	7.083 \| good	0.124 \| good
2026-04-26T09:00:00.000Z	31 \| good	2.063 \| good	8.389 \| good	33.082 \| good	1.56 \| good	6.667 \| good	0.122 \| good
2026-04-26T10:00:00.000Z	29 \| good	2.601 \| good	10.937 \| good	31.074 \| good	1.516 \| good	6.517 \| good	0.121 \| good
2026-04-26T11:00:00.000Z	28 \| good	1.557 \| good	6.623 \| good	30.008 \| good	1.471 \| good	6.367 \| good	0.119 \| good
2026-04-26T12:00:00.000Z	26 \| good	1.333 \| good	5.349 \| good	27.842 \| good	1.427 \| good	6.217 \| good	0.117 \| good
2026-04-26T13:00:00.000Z	23 \| good	1.595 \| good	6.272 \| good	24.989 \| good	1.56 \| good	6.13 \| good	0.12 \| good
2026-04-26T14:00:00.000Z	27 \| good	2.138 \| good	8.629 \| good	29.357 \| good	1.693 \| good	6.044 \| good	0.122 \| good
2026-04-26T15:00:00.000Z	35 \| good	1.962 \| good	8.136 \| good	37.549 \| good	1.826 \| good	5.957 \| good	0.124 \| good

Westmont

Empower business decisions with accurate air quality data

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

0.48ppm

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

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Frequently asked questions

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

Air quality updates for Westmont, California are available every hour.

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

Westmont, California experienced its worst air quality at 12:00:00, 2026-04-24.

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

The best air quality in Westmont, California was observed at 08:00:00 on 2026-04-24.

What is the air quality in Westmont, California right now?

The air quality in Westmont, California right now is Good, with an AQI of 38.

What pollutant is most frequently found in Westmont, California?

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

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

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

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

Westmont, California currently has a PM_2.5 concentration of 7.256 μg/m³.

What is the current level of PM₁₀ in Westmont, California?

Westmont, California currently has a PM₁₀ concentration of 26.651 μg/m³.

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

The current carbon monoxide (CO) level in Westmont, California is 0.319 ppm.

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

The current sulfur dioxide (SO₂) concentration in Westmont, California is 0.679 ppb.

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

Westmont, California currently has an ozone (O₃) concentration of 21.532 ppm.

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

The current level of nitrogen dioxide (NO₂) in Westmont, California is 18.38 ppb.

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