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Air quality · Tennessee, United States

Nashville Air Quality Index (AQI) today

Modelled estimate for 06:00 local time (UTC-6), refreshed 3 Nov, 07:52 UTC+0.

42 Good

Live estimate · modelled

US EPA AQI06:00 UTC-6, 3 Nov Main pollutant: PM2.5

Air quality is satisfactory, and air pollution poses little or no risk.

This page uses EPA’s NowCast, which follows the last few hours, as the US government’s AirNow does. On a 24-hour average of particles, as many apps show, it is 51.

Over the next 24 hours the model expects the AQI to range from 31 around 11:00 to 43 around 19:00 (3 Nov).

699th most polluted of 849 cities worldwide right now, 14th of 25 in United States.

What to do today

  • Long walk or run outside OK
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is satisfactory, and air pollution poses little or no risk.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

07:00 · 53 08:00 · 53 09:00 · 53 10:00 · 53 11:00 · 54 12:00 · 54 13:00 · 54 14:00 · 53 15:00 · 52 16:00 · 52 17:00 · 51 18:00 · 51 19:00 · 51 20:00 · 52 21:00 · 51 22:00 · 51 23:00 · 50 00:00 · 49 01:00 · 48 02:00 · 47 03:00 · 46 04:00 · 46 05:00 · 46 06:00 · 42 07:00 · 37 08:00 · 34 09:00 · 33 10:00 · 32 11:00 · 31 12:00 · 31 13:00 · 32 14:00 · 33 15:00 · 35 16:00 · 37 17:00 · 39 18:00 · 42 19:00 · 43 20:00 · 43 21:00 · 41 22:00 · 38 23:00 · 36 00:00 · 31 01:00 · 31 02:00 · 31 03:00 · 31 04:00 · 32 05:00 · 32 06:00 · 32 07:00 · 33 08:00 · 33 09:00 · 32 10:00 · 32 11:00 · 31 12:00 · 31 13:00 · 30 14:00 · 30 15:00 · 29 16:00 · 28 17:00 · 27 18:00 · 26 19:00 · 26 20:00 · 29 21:00 · 31 22:00 · 33 23:00 · 33 00:00 · 32 01:00 · 30 Now

US EPA AQI per hour, UTC-6. Particles use EPA’s NowCast (a 12-hour weighted average), ozone and CO an 8-hour average. Lighter bars are the CAMS forecast.

Show as a table
TimeAQI
Mon 07:0053
Mon 08:0053
Mon 09:0053
Mon 10:0053
Mon 11:0054
Mon 12:0054
Mon 13:0054
Mon 14:0053
Mon 15:0052
Mon 16:0052
Mon 17:0051
Mon 18:0051
Mon 19:0051
Mon 20:0052
Mon 21:0051
Mon 22:0051
Mon 23:0050
Tue 00:0049
Tue 01:0048
Tue 02:0047
Tue 03:0046
Tue 04:0046
Tue 05:0046
Tue 06:00 · Now42
Tue 07:00 · Forecast37
Tue 08:00 · Forecast34
Tue 09:00 · Forecast33
Tue 10:00 · Forecast32
Tue 11:00 · Forecast31
Tue 12:00 · Forecast31
Tue 13:00 · Forecast32
Tue 14:00 · Forecast33
Tue 15:00 · Forecast35
Tue 16:00 · Forecast37
Tue 17:00 · Forecast39
Tue 18:00 · Forecast42
Tue 19:00 · Forecast43
Tue 20:00 · Forecast43
Tue 21:00 · Forecast41
Tue 22:00 · Forecast38
Tue 23:00 · Forecast36
Wed 00:00 · Forecast31
Wed 01:00 · Forecast31
Wed 02:00 · Forecast31
Wed 03:00 · Forecast31
Wed 04:00 · Forecast32
Wed 05:00 · Forecast32
Wed 06:00 · Forecast32
Wed 07:00 · Forecast33
Wed 08:00 · Forecast33
Wed 09:00 · Forecast32
Wed 10:00 · Forecast32
Wed 11:00 · Forecast31
Wed 12:00 · Forecast31
Wed 13:00 · Forecast30
Wed 14:00 · Forecast30
Wed 15:00 · Forecast29
Wed 16:00 · Forecast28
Wed 17:00 · Forecast27
Wed 18:00 · Forecast26
Wed 19:00 · Forecast26
Wed 20:00 · Forecast29
Wed 21:00 · Forecast31
Wed 22:00 · Forecast33
Wed 23:00 · Forecast33
Thu 00:00 · Forecast32
Thu 01:00 · Forecast30

Pollutants this hour

  • PM2.5 6.7 µg/m³ 24-hour mean 9.1 µg/m³ · within WHO’s 24-hour guideline (15) 42
  • PM10 8 µg/m³ 8
  • O₃ 64 µg/m³ 32
  • NO₂ 5 µg/m³ 2
  • SO₂ 1 µg/m³ 0
  • CO 0.15 mg/m³ 1

Modelled concentrations at the city’s location (CAMS). The sub-index uses the same averaging as the headline, so the highest one is the AQI.

Nearby cities

City AQI
Indianapolis Indiana 26
Columbus Ohio 27
Charlotte North Carolina 47
Chicago Illinois 37
Jacksonville Florida 38
Washington District of Columbia 61
Oklahoma City Oklahoma 21

Where this number comes from

The Copernicus Atmosphere Monitoring Service (CAMS) forecasts air pollution worldwide on a grid (about 11 km over Europe, about 45 km elsewhere). We take the grid value at Nashville’s coordinates and score it with the US EPA’s method. It is a model, not a measurement: a nearby monitoring station can read quite differently, especially next to busy roads or during fires and dust storms.

Full methodology · Data: CAMS via Open-Meteo (CC BY 4.0); city list: GeoNames (CC BY 4.0).

  • Good 0–50
  • Moderate 51–100
  • Unhealthy for sensitive groups 101–150
  • Unhealthy 151–200
  • Very unhealthy 201–300
  • Hazardous 301–500

Questions

What is the AQI in Nashville right now?
42 on the US EPA scale (Good) at 06:00 UTC-6, 3 Nov. PM2.5 is the pollutant with the highest sub-index. This is a modelled estimate from the Copernicus Atmosphere Monitoring Service (CAMS), not a reading from a monitoring station.

Is it safe to exercise outside in Nashville today?
For most people, yes. The EPA’s statement for “Good”: Air quality is satisfactory, and air pollution poses little or no risk. General guidance, not medical advice.

Will the air in Nashville get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 31 around 11:00 to 43 around 19:00 (3 Nov). Forecasts beyond a day are less certain.

How does Nashville compare with other cities?
Right now it is the 699th most polluted of 849 cities we track worldwide, and 14th of 25 in United States, all on the same US EPA scale.

Why does another app show a different AQI for Nashville?
Apps differ in source (government stations, low-cost sensors or a model like this one), in scale (US EPA, European, or a national index) and in averaging (hourly or NowCast, 8-hour, 24-hour). This page uses the US EPA AQI with EPA’s NowCast for particles, computed from the CAMS forecast for the city’s location.