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

Westmont, California currently has a PM10 concentration of 18.859 μg/m3.

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

The current sulfur dioxide (SO2) concentration in Westmont, California is 0.238 ppb.

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

Westmont, California currently has an ozone (O3) concentration of 38.318 ppm.

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

The current level of nitrogen dioxide (NO2) in Westmont, California is 21.616 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 4.487 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)

4.49 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

18.86 μg/m³

155

255

425

605+

Ozone (O₃)

38.32 ppb

201

201+

Sulfur Dioxide (SO₂)

0.24 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

21.62 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 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
2026-03-05T04:00:00.000Z	49 \| good	8.612 \| good	31.946 \| good	35.45 \| good	0.24 \| good	10.578 \| good	0.214 \| good
2026-03-05T05:00:00.000Z	44 \| good	8.402 \| good	32.348 \| good	31.462 \| good	0.279 \| good	12.792 \| good	0.238 \| good
2026-03-05T06:00:00.000Z	49 \| good	8.571 \| good	30.481 \| good	30.02 \| good	0.239 \| good	13.951 \| good	0.259 \| good
2026-03-05T07:00:00.000Z	44 \| good	8.204 \| good	32.196 \| good	30.653 \| good	0.255 \| good	13.951 \| good	0.259 \| good
2026-03-05T08:00:00.000Z	52 \| moderate	9.764 \| good	33.253 \| good	27.219 \| good	0.267 \| good	15.028 \| good	0.308 \| good
2026-03-05T09:00:00.000Z	58 \| moderate	13.375 \| fine	43.823 \| good	23.46 \| good	0.285 \| good	10.515 \| good	0.228 \| good
2026-03-05T10:00:00.000Z	60 \| moderate	14.409 \| fine	47.522 \| good	22.612 \| good	0.245 \| good	12.36 \| good	0.229 \| good
2026-03-05T11:00:00.000Z	62 \| moderate	14.733 \| fine	52.174 \| good	17.641 \| good	0.531 \| good	10.797 \| good	0.228 \| good
2026-03-05T12:00:00.000Z	58 \| moderate	13.482 \| fine	46.929 \| good	16.44 \| good	0.239 \| good	12.651 \| good	0.299 \| good
2026-03-05T13:00:00.000Z	60 \| moderate	13.689 \| fine	49.816 \| good	18.419 \| good	0.214 \| good	12.651 \| good	0.299 \| good
2026-03-05T14:00:00.000Z	56 \| moderate	11.589 \| good	45.74 \| good	12.419 \| good	0.348 \| good	25.33 \| good	0.566 \| good
2026-03-05T15:00:00.000Z	66 \| moderate	17.425 \| fine	70.187 \| fine	12.102 \| good	0.342 \| good	27.3 \| good	0.975 \| good
2026-03-05T16:00:00.000Z	58 \| moderate	13.373 \| fine	52.46 \| good	14.084 \| good	0.346 \| good	26.237 \| good	0.573 \| good
2026-03-05T17:00:00.000Z	54 \| moderate	11.002 \| good	46.25 \| good	22.138 \| good	0.367 \| good	14.423 \| good	0.308 \| good
2026-03-05T18:00:00.000Z	49 \| good	8.831 \| good	40.417 \| good	27.578 \| good	0.267 \| good	9.892 \| good	0.185 \| good
2026-03-05T19:00:00.000Z	44 \| good	7.586 \| good	37.689 \| good	33.313 \| good	0.163 \| good	9.361 \| good	0.183 \| good
2026-03-05T20:00:00.000Z	34 \| good	6.112 \| good	28.38 \| good	37.15 \| good	0.158 \| good	8.304 \| good	0.177 \| good
2026-03-05T21:00:00.000Z	36 \| good	5.527 \| good	32.818 \| good	39.491 \| good	0.221 \| good	8.305 \| good	0.177 \| good
2026-03-05T22:00:00.000Z	39 \| good	4.119 \| good	27.159 \| good	42.085 \| good	0.281 \| good	7.418 \| good	0.2 \| good
2026-03-05T23:00:00.000Z	40 \| good	2.936 \| good	14.128 \| good	42.52 \| good	0.179 \| good	7.288 \| good	0.174 \| good
2026-03-06T00:00:00.000Z	39 \| good	2.738 \| good	17.132 \| good	41.666 \| good	0.138 \| good	6.53 \| good	0.111 \| good
2026-03-06T01:00:00.000Z	37 \| good	4.957 \| good	24.474 \| good	40.235 \| good	0.142 \| good	7.395 \| good	0.185 \| good
2026-03-06T02:00:00.000Z	36 \| good	5.166 \| good	26.908 \| good	39.162 \| good	0.213 \| good	8.554 \| good	0.18 \| good
2026-03-06T03:00:00.000Z	58 \| moderate	12.684 \| fine	56.768 \| fine	11.88 \| good	1.509 \| good	16.915 \| good	0.195 \| good
2026-03-06T04:00:00.000Z	35 \| good	6.383 \| good	29.389 \| good	38.202 \| good	0.376 \| good	10.773 \| good	0.19 \| good
2026-03-06T05:00:00.000Z	33 \| good	5.613 \| good	30.824 \| good	31.458 \| good	0.361 \| good	13.161 \| good	0.216 \| good
2026-03-06T06:00:00.000Z	29 \| good	5.263 \| good	23.805 \| good	31.323 \| good	0.206 \| good	16.373 \| good	0.284 \| good
2026-03-06T07:00:00.000Z	33 \| good	5.87 \| good	26.494 \| good	26.706 \| good	0.195 \| good	16.373 \| good	0.284 \| good
2026-03-06T08:00:00.000Z	33 \| good	5.57 \| good	25.175 \| good	25.541 \| good	0.231 \| good	27.154 \| good	0.445 \| good
2026-03-06T09:00:00.000Z	38 \| good	6.983 \| good	30.153 \| good	16.843 \| good	0.238 \| good	27.986 \| good	0.518 \| good
2026-03-06T10:00:00.000Z	38 \| good	7.305 \| good	30.776 \| good	12.851 \| good	0.235 \| good	31.205 \| good	0.515 \| good
2026-03-06T11:00:00.000Z	38 \| good	7.393 \| good	31.58 \| good	9.602 \| good	0.365 \| good	28.786 \| good	0.49 \| good
2026-03-06T12:00:00.000Z	38 \| good	7.034 \| good	30.575 \| good	6.974 \| good	0.187 \| good	29.626 \| good	0.484 \| good
2026-03-06T13:00:00.000Z	38 \| good	7.124 \| good	30.701 \| good	6.926 \| good	0.186 \| good	29.626 \| good	0.484 \| good
2026-03-06T14:00:00.000Z	44 \| good	7.618 \| good	33.321 \| good	9.019 \| good	0.418 \| good	27.944 \| good	0.81 \| good
2026-03-06T15:00:00.000Z	49 \| good	9.106 \| good	37.584 \| good	10.543 \| good	0.859 \| good	29.514 \| good	1.114 \| good
2026-03-06T16:00:00.000Z	54 \| moderate	10.808 \| good	49.866 \| good	13.545 \| good	0.861 \| good	30.621 \| good	1.185 \| good
2026-03-06T17:00:00.000Z	52 \| moderate	9.969 \| good	44.94 \| good	18.804 \| good	1.523 \| good	26.225 \| good	0.644 \| good
2026-03-06T18:00:00.000Z	49 \| good	9.182 \| good	41.195 \| good	23.733 \| good	0.797 \| good	11.835 \| good	0.243 \| good
2026-03-06T19:00:00.000Z	38 \| good	7.378 \| good	32.779 \| good	28.712 \| good	0.366 \| good	9.848 \| good	0.22 \| good
2026-03-06T20:00:00.000Z	33 \| good	5.505 \| good	27.548 \| good	32.888 \| good	0.293 \| good	8.79 \| good	0.197 \| good
2026-03-06T21:00:00.000Z	35 \| good	3.753 \| good	20.562 \| good	38.208 \| good	0.21 \| good	8.414 \| good	0.197 \| good
2026-03-06T22:00:00.000Z	38 \| good	2.396 \| good	15.3 \| good	41.258 \| good	0.286 \| good	7.227 \| good	0.197 \| good
2026-03-06T23:00:00.000Z	39 \| good	2.836 \| good	18.301 \| good	41.98 \| good	0.274 \| good	9.328 \| good	0.198 \| good
2026-03-07T00:00:00.000Z	41 \| good	3.179 \| good	13.452 \| good	43.7 \| good	0.266 \| good	9.713 \| good	0.2 \| good
2026-03-07T01:00:00.000Z	41 \| good	3.571 \| good	15.028 \| good	43.735 \| good	0.182 \| good	12.965 \| good	0.203 \| good
2026-03-07T02:00:00.000Z	39 \| good	3.585 \| good	15.268 \| good	42.058 \| good	0.234 \| good	15.609 \| good	0.202 \| good
2026-03-07T03:00:00.000Z	35 \| good	4.487 \| good	18.859 \| good	38.318 \| good	0.238 \| good	21.616 \| good	0.306 \| good
2026-03-07T03:00:00.000Z	35 \| good	4.487 \| good	18.859 \| good	38.318 \| good	0.238 \| good	21.616 \| good	0.306 \| good
2026-03-07T04:00:00.000Z	58 \| moderate	12.864 \| fine	57.616 \| fine	9.055 \| good	2.12 \| good	29.421 \| good	0.246 \| good
2026-03-07T05:00:00.000Z	64 \| moderate	16.171 \| fine	72.3 \| fine	3.548 \| good	2.312 \| good	32.17 \| good	0.263 \| good
2026-03-07T06:00:00.000Z	67 \| moderate	17.837 \| fine	78.442 \| fine	3.271 \| good	2.504 \| good	34.919 \| good	0.28 \| good
2026-03-07T07:00:00.000Z	66 \| moderate	17.018 \| fine	75.475 \| fine	1.842 \| good	2.406 \| good	34.024 \| good	0.28 \| good
2026-03-07T08:00:00.000Z	66 \| moderate	17.287 \| fine	76.461 \| fine	1.691 \| good	2.307 \| good	33.13 \| good	0.279 \| good
2026-03-07T09:00:00.000Z	69 \| moderate	18.599 \| fine	82.41 \| fine	2.054 \| good	2.208 \| good	32.235 \| good	0.278 \| good
2026-03-07T10:00:00.000Z	58 \| moderate	13.425 \| fine	59.971 \| fine	2.134 \| good	1.929 \| good	25.636 \| good	0.238 \| good
2026-03-07T11:00:00.000Z	54 \| moderate	11.224 \| good	49.879 \| good	2.909 \| good	1.65 \| good	19.036 \| good	0.199 \| good
2026-03-07T12:00:00.000Z	52 \| moderate	10.09 \| good	44.789 \| good	3.713 \| good	1.371 \| good	12.436 \| good	0.159 \| good
2026-03-07T13:00:00.000Z	52 \| moderate	9.664 \| good	42.688 \| good	3.211 \| good	1.419 \| good	12.253 \| good	0.158 \| good
2026-03-07T14:00:00.000Z	22 \| good	4.304 \| good	18.741 \| good	8.504 \| good	1.466 \| good	12.071 \| good	0.157 \| good
2026-03-07T15:00:00.000Z	49 \| good	8.536 \| good	37.933 \| good	12.312 \| good	1.513 \| good	11.888 \| good	0.156 \| good
2026-03-07T16:00:00.000Z	22 \| good	3.304 \| good	14.283 \| good	24.18 \| good	1.511 \| good	10.013 \| good	0.154 \| good
2026-03-07T17:00:00.000Z	34 \| good	2.735 \| good	11.29 \| good	37.48 \| good	1.509 \| good	8.139 \| good	0.153 \| good
2026-03-07T18:00:00.000Z	39 \| good	1.573 \| good	6.53 \| good	41.864 \| good	1.507 \| good	6.264 \| good	0.151 \| good
2026-03-07T19:00:00.000Z	40 \| good	2.446 \| good	10.124 \| good	43.168 \| good	1.312 \| good	5.048 \| good	0.144 \| good
2026-03-07T20:00:00.000Z	39 \| good	4.233 \| good	18.282 \| good	42.442 \| good	1.117 \| good	3.832 \| good	0.137 \| good
2026-03-07T21:00:00.000Z	42 \| good	4.952 \| good	21.953 \| good	45.26 \| good	0.922 \| good	2.616 \| good	0.13 \| good
2026-03-07T22:00:00.000Z	45 \| good	4.904 \| good	21.551 \| good	49 \| good	0.826 \| good	2.579 \| good	0.128 \| good
2026-03-07T23:00:00.000Z	44 \| good	2.112 \| good	8.703 \| good	48.002 \| good	0.729 \| good	2.541 \| good	0.126 \| good
2026-03-08T00:00:00.000Z	41 \| good	1.024 \| good	4.013 \| good	44.387 \| good	0.632 \| good	2.504 \| good	0.124 \| good
2026-03-08T01:00:00.000Z	37 \| good	0.904 \| good	3.485 \| good	39.744 \| good	0.918 \| good	7.579 \| good	0.143 \| good
2026-03-08T02:00:00.000Z	30 \| good	2.809 \| good	12.034 \| good	32.34 \| good	1.204 \| good	12.654 \| good	0.163 \| good
2026-03-08T03:00:00.000Z	33 \| good	6.05 \| good	26.381 \| good	19.883 \| good	1.489 \| good	17.729 \| good	0.182 \| good
2026-03-08T04:00:00.000Z	33 \| good	6.329 \| good	27.797 \| good	12.436 \| good	1.755 \| good	23.352 \| good	0.198 \| good
2026-03-08T05:00:00.000Z	44 \| good	8.061 \| good	35.456 \| good	7.418 \| good	2.02 \| good	28.975 \| good	0.215 \| good
2026-03-08T06:00:00.000Z	62 \| moderate	15.218 \| fine	27.537 \| good	8.162 \| good	2.308 \| good	35.049 \| good	0.232 \| good
2026-03-08T07:00:00.000Z	56 \| moderate	12.11 \| fine	53.963 \| good	5.157 \| good	2.068 \| good	30.419 \| good	0.217 \| good
2026-03-08T08:00:00.000Z	54 \| moderate	11.392 \| good	50.934 \| good	6.52 \| good	1.851 \| good	26.24 \| good	0.204 \| good
2026-03-08T09:00:00.000Z	56 \| moderate	12.235 \| fine	54.372 \| good	8.381 \| good	1.634 \| good	22.062 \| good	0.19 \| good
2026-03-08T10:00:00.000Z	44 \| good	8.404 \| good	37.229 \| good	15.717 \| good	1.537 \| good	18.262 \| good	0.175 \| good
2026-03-08T11:00:00.000Z	38 \| good	6.702 \| good	29.369 \| good	16.877 \| good	1.441 \| good	14.462 \| good	0.16 \| good
2026-03-08T12:00:00.000Z	33 \| good	6.297 \| good	13.361 \| good	28.881 \| good	1.353 \| good	10.573 \| good	0.144 \| good
2026-03-08T13:00:00.000Z	27 \| good	5.27 \| good	11.918 \| good	29.201 \| good	1.43 \| good	11.144 \| good	0.147 \| good
2026-03-08T14:00:00.000Z	28 \| good	4.839 \| good	10.895 \| good	29.521 \| good	1.506 \| good	11.715 \| good	0.151 \| good
2026-03-08T15:00:00.000Z	33 \| good	5.989 \| good	11.638 \| good	29.842 \| good	1.583 \| good	12.286 \| good	0.154 \| good
2026-03-08T16:00:00.000Z	44 \| good	8.026 \| good	12 \| good	33.972 \| good	1.668 \| good	11.119 \| good	0.157 \| good
2026-03-08T17:00:00.000Z	38 \| good	7.401 \| good	11.308 \| good	38.103 \| good	1.752 \| good	9.952 \| good	0.159 \| good
2026-03-08T18:00:00.000Z	39 \| good	5.927 \| good	10.18 \| good	42.233 \| good	1.837 \| good	8.784 \| good	0.161 \| good
2026-03-08T19:00:00.000Z	43 \| good	5.187 \| good	10.785 \| good	46.382 \| good	1.659 \| good	7.169 \| good	0.152 \| good
2026-03-08T20:00:00.000Z	47 \| good	5.061 \| good	12.166 \| good	50.531 \| good	1.48 \| good	5.555 \| good	0.143 \| good
2026-03-08T21:00:00.000Z	51 \| moderate	4.895 \| good	13.038 \| good	54.679 \| good	1.301 \| good	3.94 \| good	0.134 \| good
2026-03-08T22:00:00.000Z	51 \| moderate	4.692 \| good	13.163 \| good	54.922 \| good	1.171 \| good	3.757 \| good	0.131 \| good
2026-03-08T23:00:00.000Z	51 \| moderate	4.384 \| good	12.712 \| good	55.165 \| fine	1.04 \| good	3.575 \| good	0.129 \| good
2026-03-09T00:00:00.000Z	51 \| moderate	4.138 \| good	12.044 \| good	55.408 \| fine	0.91 \| good	3.392 \| good	0.126 \| good
2026-03-09T01:00:00.000Z	40 \| good	5.19 \| good	11.941 \| good	43.319 \| good	1.253 \| good	12.109 \| good	0.164 \| good
2026-03-09T02:00:00.000Z	49 \| good	8.555 \| good	16.157 \| good	31.229 \| good	1.596 \| good	20.825 \| good	0.202 \| good
2026-03-09T03:00:00.000Z	56 \| moderate	12.448 \| fine	20.518 \| good	19.14 \| good	1.94 \| good	29.542 \| good	0.239 \| good

Westmont

Empower business decisions with accurate air quality data

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

0.20ppm

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 03:00:00, 2026-03-06.

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

The best air quality in Westmont, California was observed at 06:00:00 on 2026-03-06.

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

The air quality in Westmont, California right now is Good, with an AQI of 35.

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 4.487 μg/m³.

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

Westmont, California currently has a PM₁₀ concentration of 18.859 μg/m³.

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

The current carbon monoxide (CO) level in Westmont, California is 0.306 ppm.

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

The current sulfur dioxide (SO₂) concentration in Westmont, California is 0.238 ppb.

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

Westmont, California currently has an ozone (O₃) concentration of 38.318 ppm.

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

The current level of nitrogen dioxide (NO₂) in Westmont, California is 21.616 ppb.

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