What is the current concentration of PM10 in Key West, Florida?

The current PM10 concentration at Key West, Florida is 19 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Key West, Florida?

The current sulfur dioxide (SO2) concentration at Key West, Florida is 0.225 ppb.

What is the current concentration of ozone (O3) in Key West, Florida?

The current ozone (O3) concentration at Key West, Florida is 34.743 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Key West, Florida?

The current nitrogen dioxide (NO2) concentration at Key West, Florida is 0.42 ppb.

Key West, Florida live air quality index now

Q: What is the current concentration of PM2.5 in Key West, Florida?

The current PM2.5 concentration at Key West, Florida is 4.311 μg/m3.

Stay updated with real-time air quality in Key West, Florida 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

Key West, Florida

Last updated: ... (Local time)

Major air pollutants in Key West, Florida

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.87 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)

39.56 ppb

201

201+

Sulfur Dioxide (SO₂)

0.23 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

0.51 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.10 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Key West, Florida

Scroll To Air Quality Map

Track live Key West, Florida air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-21T00:00:00.000Z	41 \| good	3.84 \| good	16.999 \| good	43.63 \| good	0.309 \| good	0.599 \| good	0.109 \| good
2026-01-21T01:00:00.000Z	40 \| good	3.9 \| good	17 \| good	42.87 \| good	0.286 \| good	0.621 \| good	0.108 \| good
2026-01-21T02:00:00.000Z	38 \| good	4.39 \| good	19 \| good	41.429 \| good	0.263 \| good	0.644 \| good	0.108 \| good
2026-01-21T03:00:00.000Z	37 \| good	4.84 \| good	21 \| good	39.84 \| good	0.239 \| good	0.666 \| good	0.107 \| good
2026-01-21T04:00:00.000Z	37 \| good	4.75 \| good	21 \| good	40.18 \| good	0.237 \| good	0.674 \| good	0.108 \| good
2026-01-21T05:00:00.000Z	38 \| good	4.52 \| good	20 \| good	41.46 \| good	0.234 \| good	0.682 \| good	0.108 \| good
2026-01-21T06:00:00.000Z	39 \| good	4.34 \| good	19 \| good	41.98 \| good	0.231 \| good	0.691 \| good	0.109 \| good
2026-01-21T07:00:00.000Z	39 \| good	4.66 \| good	20.001 \| good	42.27 \| good	0.231 \| good	0.704 \| good	0.109 \| good
2026-01-21T08:00:00.000Z	38 \| good	4.591 \| good	20.001 \| good	41.469 \| good	0.23 \| good	0.717 \| good	0.109 \| good
2026-01-21T09:00:00.000Z	38 \| good	4.6 \| good	20.001 \| good	40.87 \| good	0.23 \| good	0.731 \| good	0.109 \| good
2026-01-21T10:00:00.000Z	37 \| good	4.71 \| good	21 \| good	39.559 \| good	0.232 \| good	0.726 \| good	0.109 \| good
2026-01-21T11:00:00.000Z	37 \| good	4.82 \| good	21 \| good	39.55 \| good	0.234 \| good	0.722 \| good	0.109 \| good
2026-01-21T12:00:00.000Z	37 \| good	4.521 \| good	20 \| good	40.05 \| good	0.252 \| good	0.724 \| good	0.112 \| good
2026-01-21T13:00:00.000Z	37 \| good	4.721 \| good	21 \| good	39.591 \| good	0.235 \| good	0.74 \| good	0.111 \| good
2026-01-21T14:00:00.000Z	35 \| good	5.12 \| good	22 \| good	38.444 \| good	0.218 \| good	0.757 \| good	0.111 \| good
2026-01-21T15:00:00.000Z	36 \| good	5.12 \| good	22 \| good	38.874 \| good	0.201 \| good	0.774 \| good	0.111 \| good
2026-01-21T16:00:00.000Z	38 \| good	4.91 \| good	21 \| good	40.589 \| good	0.176 \| good	0.638 \| good	0.111 \| good
2026-01-21T17:00:00.000Z	39 \| good	4.58 \| good	20 \| good	41.532 \| good	0.151 \| good	0.503 \| good	0.11 \| good
2026-01-21T18:00:00.000Z	40 \| good	4.68 \| good	20 \| good	42.605 \| good	0.126 \| good	0.367 \| good	0.11 \| good
2026-01-21T19:00:00.000Z	40 \| good	4.97 \| good	21 \| good	43.498 \| good	0.102 \| good	0.327 \| good	0.109 \| good
2026-01-21T20:00:00.000Z	40 \| good	4.881 \| good	21 \| good	43.432 \| good	0.079 \| good	0.287 \| good	0.108 \| good
2026-01-21T21:00:00.000Z	40 \| good	5.22 \| good	23 \| good	42.656 \| good	0.056 \| good	0.247 \| good	0.107 \| good
2026-01-21T22:00:00.000Z	39 \| good	4.991 \| good	21 \| good	41.911 \| good	0.077 \| good	0.346 \| good	0.108 \| good
2026-01-21T23:00:00.000Z	38 \| good	4.641 \| good	20 \| good	41.369 \| good	0.098 \| good	0.445 \| good	0.109 \| good
2026-01-22T00:00:00.000Z	35 \| good	4.171 \| good	18 \| good	38.294 \| good	0.119 \| good	0.543 \| good	0.109 \| good
2026-01-22T01:00:00.000Z	33 \| good	4.231 \| good	19 \| good	36.475 \| good	0.21 \| good	0.917 \| good	0.11 \| good
2026-01-22T02:00:00.000Z	31 \| good	4.481 \| good	19 \| good	33.939 \| good	0.243 \| good	1.054 \| good	0.112 \| good
2026-01-22T03:00:00.000Z	31 \| good	4.71 \| good	20.998 \| good	32.729 \| good	0.277 \| good	1.191 \| good	0.114 \| good
2026-01-22T04:00:00.000Z	29 \| good	5.06 \| good	21.999 \| good	30.701 \| good	0.276 \| good	1.208 \| good	0.115 \| good
2026-01-22T05:00:00.000Z	27 \| good	5.17 \| good	22 \| good	27.853 \| good	0.274 \| good	1.225 \| good	0.116 \| good
2026-01-22T06:00:00.000Z	27 \| good	5.11 \| good	22 \| good	25.694 \| good	0.272 \| good	1.241 \| good	0.117 \| good
2026-01-22T07:00:00.000Z	27 \| good	4.91 \| good	21 \| good	24.902 \| good	0.281 \| good	1.261 \| good	0.118 \| good
2026-01-22T08:00:00.000Z	27 \| good	4.921 \| good	21 \| good	24.308 \| good	0.289 \| good	1.28 \| good	0.118 \| good
2026-01-22T09:00:00.000Z	27 \| good	4.89 \| good	21 \| good	23.853 \| good	0.297 \| good	1.3 \| good	0.119 \| good
2026-01-22T10:00:00.000Z	27 \| good	4.6 \| good	20 \| good	23.838 \| good	0.305 \| good	1.275 \| good	0.119 \| good
2026-01-22T11:00:00.000Z	23 \| good	4.03 \| good	17.999 \| good	24.669 \| good	0.312 \| good	1.251 \| good	0.119 \| good
2026-01-22T12:00:00.000Z	24 \| good	3.55 \| good	15.999 \| good	25.569 \| good	0.347 \| good	1.293 \| good	0.115 \| good
2026-01-22T13:00:00.000Z	25 \| good	3.93 \| good	17 \| good	27.059 \| good	0.315 \| good	1.232 \| good	0.114 \| good
2026-01-22T14:00:00.000Z	27 \| good	4.55 \| good	19.999 \| good	28.931 \| good	0.283 \| good	1.171 \| good	0.113 \| good
2026-01-22T15:00:00.000Z	30 \| good	4.6 \| good	20 \| good	32.451 \| good	0.251 \| good	1.111 \| good	0.111 \| good
2026-01-22T16:00:00.000Z	33 \| good	4.08 \| good	18 \| good	35.951 \| good	0.246 \| good	0.894 \| good	0.11 \| good
2026-01-22T17:00:00.000Z	36 \| good	3.771 \| good	16.001 \| good	38.648 \| good	0.241 \| good	0.677 \| good	0.109 \| good
2026-01-22T18:00:00.000Z	37 \| good	3.452 \| good	15.002 \| good	40.367 \| good	0.237 \| good	0.46 \| good	0.108 \| good
2026-01-22T19:00:00.000Z	38 \| good	3.422 \| good	15.002 \| good	40.937 \| good	0.233 \| good	0.446 \| good	0.106 \| good
2026-01-22T20:00:00.000Z	31 \| good	3.961 \| good	16.999 \| good	34.247 \| good	0.229 \| good	0.433 \| good	0.105 \| good
2026-01-22T21:00:00.000Z	32 \| good	4.311 \| good	19 \| good	34.743 \| good	0.225 \| good	0.42 \| good	0.104 \| good
2026-01-22T22:00:00.000Z	37 \| good	3.872 \| good	17.001 \| good	39.563 \| good	0.23 \| good	0.51 \| good	0.104 \| good
2026-01-22T23:00:00.000Z	37 \| good	3.872 \| good	17.001 \| good	39.563 \| good	0.23 \| good	0.51 \| good	0.104 \| good
2026-01-22T23:00:00.000Z	37 \| good	3.169 \| good	13.979 \| good	40.165 \| good	0.235 \| good	0.597 \| good	0.104 \| good
2026-01-23T00:00:00.000Z	34 \| good	2.94 \| good	12 \| good	36.773 \| good	0.241 \| good	0.687 \| good	0.104 \| good
2026-01-23T01:00:00.000Z	32 \| good	3.032 \| good	12.021 \| good	34.504 \| good	0.259 \| good	0.717 \| good	0.105 \| good
2026-01-23T02:00:00.000Z	31 \| good	3.227 \| good	14.013 \| good	32.562 \| good	0.278 \| good	0.748 \| good	0.105 \| good
2026-01-23T03:00:00.000Z	31 \| good	3.959 \| good	17.064 \| good	33.045 \| good	0.296 \| good	0.778 \| good	0.106 \| good
2026-01-23T04:00:00.000Z	31 \| good	4.485 \| good	19.055 \| good	33.278 \| good	0.323 \| good	0.85 \| good	0.107 \| good
2026-01-23T05:00:00.000Z	29 \| good	4.346 \| good	19.021 \| good	31.4 \| good	0.35 \| good	0.922 \| good	0.108 \| good
2026-01-23T06:00:00.000Z	29 \| good	3.266 \| good	14.032 \| good	30.568 \| good	0.377 \| good	0.994 \| good	0.109 \| good
2026-01-23T07:00:00.000Z	28 \| good	2.556 \| good	10.05 \| good	29.653 \| good	0.496 \| good	1.285 \| good	0.112 \| good
2026-01-23T08:00:00.000Z	24 \| good	2.953 \| good	12.039 \| good	26.292 \| good	0.614 \| good	1.575 \| good	0.115 \| good
2026-01-23T09:00:00.000Z	20 \| good	3.352 \| good	14.952 \| good	22.166 \| good	0.732 \| good	1.865 \| good	0.117 \| good
2026-01-23T10:00:00.000Z	19 \| good	3.338 \| good	14.956 \| good	20.395 \| good	0.718 \| good	2.007 \| good	0.117 \| good
2026-01-23T11:00:00.000Z	19 \| good	2.709 \| good	11 \| good	20.052 \| good	0.703 \| good	2.148 \| good	0.117 \| good
2026-01-23T12:00:00.000Z	20 \| good	2.249 \| good	9.021 \| good	21.694 \| good	0.689 \| good	2.29 \| good	0.118 \| good
2026-01-23T13:00:00.000Z	22 \| good	3.219 \| good	13.985 \| good	23.773 \| good	0.622 \| good	2.27 \| good	0.116 \| good
2026-01-23T14:00:00.000Z	22 \| good	3.757 \| good	16.022 \| good	24.418 \| good	0.554 \| good	2.25 \| good	0.114 \| good
2026-01-23T15:00:00.000Z	28 \| good	3.42 \| good	15.001 \| good	29.996 \| good	0.487 \| good	2.23 \| good	0.112 \| good
2026-01-23T16:00:00.000Z	34 \| good	2.541 \| good	10.026 \| good	37.133 \| good	0.465 \| good	1.861 \| good	0.111 \| good
2026-01-23T17:00:00.000Z	35 \| good	1.987 \| good	8.013 \| good	38.217 \| good	0.443 \| good	1.492 \| good	0.11 \| good
2026-01-23T18:00:00.000Z	35 \| good	1.706 \| good	6.994 \| good	37.833 \| good	0.421 \| good	1.123 \| good	0.108 \| good
2026-01-23T19:00:00.000Z	38 \| good	1.79 \| good	7.033 \| good	40.614 \| good	0.397 \| good	0.974 \| good	0.107 \| good
2026-01-23T20:00:00.000Z	40 \| good	2.092 \| good	8.038 \| good	42.655 \| good	0.373 \| good	0.825 \| good	0.106 \| good
2026-01-23T21:00:00.000Z	40 \| good	2.801 \| good	11.968 \| good	42.922 \| good	0.349 \| good	0.676 \| good	0.105 \| good
2026-01-23T22:00:00.000Z	40 \| good	2.942 \| good	12.021 \| good	43.139 \| good	0.343 \| good	0.754 \| good	0.104 \| good
2026-01-23T23:00:00.000Z	39 \| good	2.362 \| good	9.982 \| good	42.138 \| good	0.336 \| good	0.832 \| good	0.103 \| good
2026-01-24T00:00:00.000Z	35 \| good	2.032 \| good	8.024 \| good	37.793 \| good	0.329 \| good	0.91 \| good	0.103 \| good
2026-01-24T01:00:00.000Z	33 \| good	2.012 \| good	8.011 \| good	36.245 \| good	0.334 \| good	0.868 \| good	0.102 \| good
2026-01-24T02:00:00.000Z	32 \| good	2.212 \| good	9.007 \| good	34.913 \| good	0.339 \| good	0.826 \| good	0.101 \| good
2026-01-24T03:00:00.000Z	31 \| good	2.232 \| good	9.011 \| good	34.39 \| good	0.344 \| good	0.785 \| good	0.1 \| good
2026-01-24T04:00:00.000Z	30 \| good	2.503 \| good	10.011 \| good	32.483 \| good	0.332 \| good	0.814 \| good	0.1 \| good
2026-01-24T05:00:00.000Z	28 \| good	2.736 \| good	11.019 \| good	29.739 \| good	0.32 \| good	0.843 \| good	0.099 \| good
2026-01-24T06:00:00.000Z	28 \| good	2.423 \| good	10.005 \| good	29.556 \| good	0.308 \| good	0.872 \| good	0.099 \| good
2026-01-24T07:00:00.000Z	28 \| good	2.443 \| good	10.003 \| good	29.908 \| good	0.334 \| good	1.063 \| good	0.099 \| good
2026-01-24T08:00:00.000Z	26 \| good	2.56 \| good	10.003 \| good	28.366 \| good	0.359 \| good	1.253 \| good	0.099 \| good
2026-01-24T09:00:00.000Z	26 \| good	2.553 \| good	10.005 \| good	28.283 \| good	0.384 \| good	1.443 \| good	0.099 \| good
2026-01-24T10:00:00.000Z	26 \| good	2.501 \| good	10 \| good	27.73 \| good	0.401 \| good	1.64 \| good	0.1 \| good
2026-01-24T11:00:00.000Z	25 \| good	2.143 \| good	8.976 \| good	26.957 \| good	0.419 \| good	1.836 \| good	0.101 \| good
2026-01-24T12:00:00.000Z	25 \| good	2.412 \| good	10 \| good	26.532 \| good	0.436 \| good	2.032 \| good	0.101 \| good
2026-01-24T13:00:00.000Z	26 \| good	2.972 \| good	12 \| good	27.525 \| good	0.41 \| good	2.102 \| good	0.102 \| good
2026-01-24T14:00:00.000Z	28 \| good	2.932 \| good	12 \| good	30.178 \| good	0.383 \| good	2.171 \| good	0.102 \| good
2026-01-24T15:00:00.000Z	32 \| good	2.842 \| good	11.973 \| good	34.511 \| good	0.357 \| good	2.24 \| good	0.103 \| good
2026-01-24T16:00:00.000Z	37 \| good	2.39 \| good	9.995 \| good	39.751 \| good	0.308 \| good	1.716 \| good	0.1 \| good
2026-01-24T17:00:00.000Z	40 \| good	2.112 \| good	8.967 \| good	43.014 \| good	0.26 \| good	1.193 \| good	0.098 \| good
2026-01-24T18:00:00.000Z	40 \| good	2.12 \| good	8.967 \| good	43.453 \| good	0.211 \| good	0.669 \| good	0.096 \| good
2026-01-24T19:00:00.000Z	39 \| good	2.32 \| good	9.967 \| good	42.215 \| good	0.177 \| good	0.53 \| good	0.094 \| good
2026-01-24T20:00:00.000Z	38 \| good	2.271 \| good	9.038 \| good	40.834 \| good	0.142 \| good	0.392 \| good	0.092 \| good
2026-01-24T21:00:00.000Z	37 \| good	2.781 \| good	11.044 \| good	40.282 \| good	0.108 \| good	0.253 \| good	0.09 \| good
2026-01-24T22:00:00.000Z	39 \| good	2.85 \| good	11.976 \| good	41.779 \| good	0.107 \| good	0.338 \| good	0.091 \| good

Key West

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Key West, Florida air quality map: Track AQI near you

0.45ppm

How accurate is Florida, USA air quality data?

Air quality data and pollutant measurements for Florida, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Key West, Florida updated?

The air quality for Key West, Florida is updated every hour.

When was the worst air quality at Key West, Florida in the last 24 hrs?

The worst air quality in Key West, Florida in the last 24 hours was observed at 10:00:00 on 2026-01-21.

When was the best air quality at Key West, Florida in the last 24 hrs?

In the last 24 hrs, the best air quality in Key West, Florida was observed at 11:00:00 on 2026-01-22.

What is the current air quality in Key West, Florida?

The current air quality in Key West, Florida is 32, categorized as Good based on real-time data.

What pollutant is the most common in Key West, Florida?

The most common pollutant in Key West, Florida is O3.

What should I do if the air quality in Key West, Florida is poor?

If the air quality in Key West, Florida is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Key West, Florida?

The current PM_2.5 concentration at Key West, Florida is 4.311 μg/m³.

What is the current concentration of PM₁₀ in Key West, Florida?

The current PM₁₀ concentration at Key West, Florida is 19 μg/m³.

What is the current concentration of carbon monoxide (CO) in Key West, Florida?

The current carbon monoxide (CO) concentration at Key West, Florida is 0.104 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Key West, Florida?

The current sulfur dioxide (SO₂) concentration at Key West, Florida is 0.225 ppb.

What is the current concentration of ozone (O₃) in Key West, Florida?

The current ozone (O₃) concentration at Key West, Florida is 34.743 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Key West, Florida?

The current nitrogen dioxide (NO₂) concentration at Key West, Florida is 0.42 ppb.

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