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

Westmont, California currently has a PM10 concentration of 5.958 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Westmont, California is 0.301 ppb.

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

Westmont, California currently has an ozone (O3) concentration of 39.913 ppm.

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

The current level of nitrogen dioxide (NO2) in Westmont, California is 7.082 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 1.403 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)

1.40 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

5.96 μg/m³

155

255

425

605+

Ozone (O₃)

39.91 ppb

201

201+

Sulfur Dioxide (SO₂)

0.30 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.08 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.16 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
2026-10-21T00:00:00.000Z	49 \| good	9.156 \| good	38.197 \| good	41.713 \| good	0.272 \| good	6.996 \| good	0.174 \| good
2026-10-21T01:00:00.000Z	49 \| good	9.283 \| good	40.818 \| good	40.377 \| good	0.306 \| good	8.417 \| good	0.227 \| good
2026-10-21T02:00:00.000Z	44 \| good	7.895 \| good	34.485 \| good	36.415 \| good	0.386 \| good	6.974 \| good	0.186 \| good
2026-10-21T03:00:00.000Z	33 \| good	5.99 \| good	27 \| good	25.035 \| good	1.18 \| good	8.75 \| good	0.144 \| good
2026-10-21T04:00:00.000Z	33 \| good	5.964 \| good	25.492 \| good	29.829 \| good	0.38 \| good	7.435 \| good	0.13 \| good
2026-10-21T05:00:00.000Z	33 \| good	5.886 \| good	27.408 \| good	29.367 \| good	0.695 \| good	7.493 \| good	0.133 \| good
2026-10-21T06:00:00.000Z	38 \| good	6.79 \| good	30.62 \| good	27.449 \| good	0.343 \| good	7.575 \| good	0.168 \| good
2026-10-21T07:00:00.000Z	38 \| good	6.707 \| good	30.244 \| good	26.702 \| good	0.344 \| good	7.657 \| good	0.168 \| good
2026-10-21T08:00:00.000Z	33 \| good	6.043 \| good	27.583 \| good	25.992 \| good	0.336 \| good	7.928 \| good	0.174 \| good
2026-10-21T09:00:00.000Z	27 \| good	5.178 \| good	25.345 \| good	24.928 \| good	0.432 \| good	9.431 \| good	0.127 \| good
2026-10-21T10:00:00.000Z	27 \| good	4.773 \| good	23.463 \| good	20.612 \| good	0.391 \| good	10.723 \| good	0.212 \| good
2026-10-21T11:00:00.000Z	27 \| good	4.906 \| good	24.116 \| good	16.895 \| good	0.397 \| good	13.302 \| good	0.262 \| good
2026-10-21T12:00:00.000Z	33 \| good	6.054 \| good	27.671 \| good	12.472 \| good	0.422 \| good	15.96 \| good	0.264 \| good
2026-10-21T13:00:00.000Z	33 \| good	6.032 \| good	27.741 \| good	14.144 \| good	0.422 \| good	16.203 \| good	0.264 \| good
2026-10-21T14:00:00.000Z	33 \| good	5.991 \| good	27.985 \| good	12.107 \| good	0.425 \| good	21.415 \| good	0.429 \| good
2026-10-21T15:00:00.000Z	44 \| good	8.303 \| good	36.542 \| good	10.713 \| good	0.526 \| good	23.242 \| good	0.484 \| good
2026-10-21T16:00:00.000Z	49 \| good	9.172 \| good	41.162 \| good	12.345 \| good	0.379 \| good	21.755 \| good	0.477 \| good
2026-10-21T17:00:00.000Z	54 \| moderate	10.55 \| good	46.201 \| good	19.803 \| good	0.388 \| good	14.808 \| good	0.286 \| good
2026-10-21T18:00:00.000Z	49 \| good	9.143 \| good	37.6 \| good	24.183 \| good	0.343 \| good	10.67 \| good	0.192 \| good
2026-10-21T19:00:00.000Z	44 \| good	8.404 \| good	34.963 \| good	28.242 \| good	0.589 \| good	8.048 \| good	0.227 \| good
2026-10-21T20:00:00.000Z	38 \| good	7.464 \| good	31.053 \| good	31.024 \| good	0.521 \| good	7.282 \| good	0.183 \| good
2026-10-21T21:00:00.000Z	33 \| good	5.996 \| good	24.701 \| good	30.641 \| good	0.568 \| good	8.903 \| good	0.224 \| good
2026-10-21T22:00:00.000Z	29 \| good	3.791 \| good	15.982 \| good	30.537 \| good	0.494 \| good	10.879 \| good	0.18 \| good
2026-10-21T23:00:00.000Z	24 \| good	3.237 \| good	13.83 \| good	25.866 \| good	0.425 \| good	16.152 \| good	0.268 \| good
2026-10-22T00:00:00.000Z	27 \| good	4.831 \| good	21.816 \| good	25.491 \| good	0.434 \| good	19.083 \| good	0.394 \| good
2026-10-22T01:00:00.000Z	27 \| good	5.153 \| good	21.028 \| good	23.975 \| good	0.412 \| good	21.339 \| good	0.406 \| good
2026-10-22T02:00:00.000Z	33 \| good	6.18 \| good	27.67 \| good	24.594 \| good	0.417 \| good	16.748 \| good	0.362 \| good
2026-10-22T03:00:00.000Z	32 \| good	4.721 \| good	20.363 \| good	35.18 \| good	0.591 \| good	12.041 \| good	0.128 \| good
2026-10-22T04:00:00.000Z	33 \| good	6.489 \| good	26.001 \| good	22.876 \| good	0.336 \| good	13.463 \| good	0.259 \| good
2026-10-22T05:00:00.000Z	27 \| good	4.939 \| good	19.733 \| good	20.259 \| good	0.609 \| good	10.231 \| good	0.212 \| good
2026-10-22T06:00:00.000Z	22 \| good	3.789 \| good	15.051 \| good	22.334 \| good	0.231 \| good	7.546 \| good	0.171 \| good
2026-10-22T07:00:00.000Z	22 \| good	3.791 \| good	15.508 \| good	21.65 \| good	0.23 \| good	7.473 \| good	0.171 \| good
2026-10-22T08:00:00.000Z	19 \| good	2.582 \| good	9.134 \| good	21.294 \| good	0.297 \| good	9.512 \| good	0.157 \| good
2026-10-22T09:00:00.000Z	19 \| good	1.587 \| good	6.533 \| good	20.797 \| good	0.384 \| good	5.05 \| good	0.112 \| good
2026-10-22T10:00:00.000Z	18 \| good	2.505 \| good	11.32 \| good	18.757 \| good	0.296 \| good	6.547 \| good	0.112 \| good
2026-10-22T11:00:00.000Z	15 \| good	2.378 \| good	10.482 \| good	15.521 \| good	0.369 \| good	11.892 \| good	0.25 \| good
2026-10-22T12:00:00.000Z	16 \| good	2.512 \| good	10.089 \| good	16.215 \| good	0.297 \| good	13.036 \| good	0.259 \| good
2026-10-22T13:00:00.000Z	16 \| good	2.523 \| good	10.424 \| good	16.12 \| good	0.297 \| good	13.145 \| good	0.259 \| good
2026-10-22T14:00:00.000Z	20 \| good	1.852 \| good	7.497 \| good	12.657 \| good	0.297 \| good	20.858 \| good	0.495 \| good
2026-10-22T15:00:00.000Z	22 \| good	2.289 \| good	10.106 \| good	8.948 \| good	0.236 \| good	22.952 \| good	0.641 \| good
2026-10-22T16:00:00.000Z	22 \| good	2.83 \| good	13.397 \| good	17.298 \| good	0.369 \| good	23.096 \| good	0.597 \| good
2026-10-22T17:00:00.000Z	27 \| good	4.767 \| good	21.56 \| good	21.604 \| good	0.344 \| good	12.966 \| good	0.31 \| good
2026-10-22T18:00:00.000Z	25 \| good	4.048 \| good	17.925 \| good	26.757 \| good	0.283 \| good	8.46 \| good	0.251 \| good
2026-10-22T19:00:00.000Z	26 \| good	2.419 \| good	10.249 \| good	27.751 \| good	0.2 \| good	7.788 \| good	0.204 \| good
2026-10-22T20:00:00.000Z	31 \| good	2.131 \| good	9.584 \| good	34.25 \| good	0.205 \| good	6.246 \| good	0.155 \| good
2026-10-22T21:00:00.000Z	35 \| good	1.806 \| good	7.68 \| good	38.364 \| good	0.197 \| good	4.234 \| good	0.158 \| good
2026-10-22T22:00:00.000Z	37 \| good	1.579 \| good	6.805 \| good	39.724 \| good	0.301 \| good	5.092 \| good	0.166 \| good
2026-10-22T23:00:00.000Z	37 \| good	1.403 \| good	5.958 \| good	39.913 \| good	0.301 \| good	7.082 \| good	0.158 \| good
2026-10-23T00:00:00.000Z	33 \| good	2.52 \| good	10.399 \| good	35.68 \| good	0.986 \| good	3.683 \| good	0.142 \| good
2026-10-23T01:00:00.000Z	29 \| good	2.903 \| good	11.963 \| good	30.623 \| good	0.987 \| good	5.368 \| good	0.146 \| good
2026-10-23T02:00:00.000Z	27 \| good	2.293 \| good	9.205 \| good	29.201 \| good	1.012 \| good	11.65 \| good	0.166 \| good
2026-10-23T03:00:00.000Z	28 \| good	2.759 \| good	11.475 \| good	30.066 \| good	1.128 \| good	19.318 \| good	0.188 \| good
2026-10-23T04:00:00.000Z	25 \| good	2.805 \| good	11.618 \| good	27.076 \| good	1.289 \| good	25.3 \| good	0.209 \| good
2026-10-23T05:00:00.000Z	27 \| good	4.524 \| good	19.408 \| good	22.816 \| good	1.472 \| good	27.959 \| good	0.229 \| good
2026-10-23T06:00:00.000Z	27 \| good	4.951 \| good	21.137 \| good	20.613 \| good	1.573 \| good	28.651 \| good	0.238 \| good
2026-10-23T07:00:00.000Z	27 \| good	4.638 \| good	20.011 \| good	19.329 \| good	1.566 \| good	27.838 \| good	0.235 \| good
2026-10-23T08:00:00.000Z	27 \| good	4.795 \| good	20.916 \| good	17.392 \| good	1.554 \| good	25.666 \| good	0.227 \| good
2026-10-23T09:00:00.000Z	23 \| good	3.949 \| good	16.917 \| good	15.588 \| good	1.521 \| good	24.161 \| good	0.22 \| good
2026-10-23T10:00:00.000Z	22 \| good	3.682 \| good	16.253 \| good	15.241 \| good	1.492 \| good	22.361 \| good	0.211 \| good
2026-10-23T11:00:00.000Z	27 \| good	4.692 \| good	20.302 \| good	13.167 \| good	1.426 \| good	21.531 \| good	0.207 \| good
2026-10-23T12:00:00.000Z	27 \| good	5.222 \| good	22.845 \| good	2.828 \| good	1.409 \| good	20.571 \| good	0.2 \| good
2026-10-23T13:00:00.000Z	27 \| good	5.255 \| good	22.763 \| good	2.015 \| good	1.395 \| good	18.178 \| good	0.191 \| good
2026-10-23T14:00:00.000Z	49 \| good	8.939 \| good	39.377 \| good	2.166 \| good	1.386 \| good	18.871 \| good	0.195 \| good
2026-10-23T15:00:00.000Z	52 \| moderate	9.672 \| good	42.836 \| good	10.235 \| good	1.399 \| good	17.198 \| good	0.211 \| good
2026-10-23T16:00:00.000Z	38 \| good	7.108 \| good	31.468 \| good	18.605 \| good	1.634 \| good	9.075 \| good	0.164 \| good
2026-10-23T17:00:00.000Z	33 \| good	5.656 \| good	24.801 \| good	23.318 \| good	1.789 \| good	6.434 \| good	0.151 \| good
2026-10-23T18:00:00.000Z	25 \| good	3.523 \| good	15.605 \| good	27.239 \| good	1.879 \| good	5.648 \| good	0.146 \| good
2026-10-23T19:00:00.000Z	31 \| good	3.62 \| good	15.76 \| good	32.71 \| good	1.824 \| good	5.008 \| good	0.143 \| good
2026-10-23T20:00:00.000Z	35 \| good	4.849 \| good	21.305 \| good	37.665 \| good	1.724 \| good	4.29 \| good	0.14 \| good
2026-10-23T21:00:00.000Z	38 \| good	6.929 \| good	30.55 \| good	41.433 \| good	1.609 \| good	3.929 \| good	0.138 \| good
2026-10-23T22:00:00.000Z	39 \| good	5.57 \| good	24.12 \| good	41.598 \| good	1.566 \| good	3.803 \| good	0.137 \| good
2026-10-23T23:00:00.000Z	39 \| good	6.775 \| good	29.98 \| good	41.799 \| good	1.537 \| good	4.109 \| good	0.137 \| good
2026-10-24T00:00:00.000Z	44 \| good	8.307 \| good	36.784 \| good	41.668 \| good	1.459 \| good	4.885 \| good	0.139 \| good
2026-10-24T01:00:00.000Z	38 \| good	7.133 \| good	31.813 \| good	39.138 \| good	1.345 \| good	6.776 \| good	0.144 \| good
2026-10-24T02:00:00.000Z	34 \| good	5.031 \| good	21.704 \| good	36.855 \| good	1.26 \| good	12.694 \| good	0.163 \| good
2026-10-24T03:00:00.000Z	38 \| good	6.77 \| good	30 \| good	34.915 \| good	1.201 \| good	18.192 \| good	0.178 \| good
2026-10-24T04:00:00.000Z	44 \| good	7.651 \| good	33.734 \| good	27.281 \| good	1.193 \| good	22.522 \| good	0.193 \| good
2026-10-24T05:00:00.000Z	44 \| good	8.229 \| good	35.829 \| good	17.886 \| good	1.212 \| good	24.52 \| good	0.206 \| good
2026-10-24T06:00:00.000Z	44 \| good	7.867 \| good	34.526 \| good	9.598 \| good	1.265 \| good	26.392 \| good	0.215 \| good
2026-10-24T07:00:00.000Z	38 \| good	7.034 \| good	31.321 \| good	9.243 \| good	1.326 \| good	26.634 \| good	0.225 \| good
2026-10-24T08:00:00.000Z	38 \| good	7.288 \| good	31.853 \| good	12.106 \| good	1.319 \| good	26.189 \| good	0.232 \| good
2026-10-24T09:00:00.000Z	44 \| good	8.132 \| good	36.002 \| good	11.008 \| good	1.279 \| good	25.517 \| good	0.235 \| good
2026-10-24T10:00:00.000Z	49 \| good	8.901 \| good	39.86 \| good	3.884 \| good	1.21 \| good	24.674 \| good	0.236 \| good
2026-10-24T11:00:00.000Z	54 \| moderate	10.76 \| good	47.405 \| good	4.128 \| good	1.132 \| good	23.809 \| good	0.235 \| good
2026-10-24T12:00:00.000Z	56 \| moderate	12.301 \| fine	54.903 \| good	3.578 \| good	1.05 \| good	22.942 \| good	0.235 \| good
2026-10-24T13:00:00.000Z	60 \| moderate	13.645 \| fine	61.137 \| fine	4.39 \| good	0.981 \| good	22.077 \| good	0.234 \| good
2026-10-24T14:00:00.000Z	62 \| moderate	14.81 \| fine	65.955 \| fine	5.093 \| good	0.957 \| good	21.291 \| good	0.239 \| good
2026-10-24T15:00:00.000Z	67 \| moderate	18.069 \| fine	79.708 \| fine	10.069 \| good	0.97 \| good	18.211 \| good	0.253 \| good
2026-10-24T16:00:00.000Z	62 \| moderate	15.15 \| fine	67.495 \| fine	17.146 \| good	1.055 \| good	15.38 \| good	0.255 \| good
2026-10-24T17:00:00.000Z	54 \| moderate	10.838 \| good	48.286 \| good	30.237 \| good	1.369 \| good	12.39 \| good	0.2 \| good
2026-10-24T18:00:00.000Z	44 \| good	8.286 \| good	36.444 \| good	34.77 \| good	1.894 \| good	9.073 \| good	0.169 \| good
2026-10-24T19:00:00.000Z	49 \| good	8.612 \| good	37.983 \| good	39.214 \| good	2.046 \| good	7.51 \| good	0.158 \| good
2026-10-24T20:00:00.000Z	49 \| good	8.522 \| good	37.654 \| good	46.087 \| good	2.106 \| good	6.826 \| good	0.154 \| good
2026-10-24T21:00:00.000Z	49 \| good	8.613 \| good	37.621 \| good	50.628 \| good	2.162 \| good	6.611 \| good	0.154 \| good
2026-10-24T22:00:00.000Z	49 \| good	6.581 \| good	29.681 \| good	52.661 \| good	2.172 \| good	6.558 \| good	0.154 \| good
2026-10-24T23:00:00.000Z	46 \| good	7.707 \| good	33.79 \| good	50.381 \| good	2.086 \| good	6.742 \| good	0.154 \| good

Westmont

Empower business decisions with accurate air quality data

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

0.17ppm

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 10:00:00, 2026-10-22.

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

The best air quality in Westmont, California was observed at 11:00:00 on 2026-10-22.

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

The air quality in Westmont, California right now is Good, with an AQI of 37.

What pollutant is most frequently found in Westmont, California?

In Westmont, California, O3 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 1.403 μg/m³.

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

Westmont, California currently has a PM₁₀ concentration of 5.958 μg/m³.

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

The current carbon monoxide (CO) level in Westmont, California is 0.158 ppm.

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

The current sulfur dioxide (SO₂) concentration in Westmont, California is 0.301 ppb.

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

Westmont, California currently has an ozone (O₃) concentration of 39.913 ppm.

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

The current level of nitrogen dioxide (NO₂) in Westmont, California is 7.082 ppb.

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