ID: 2427

AQSQID: 300310017

Site Name: West Yellowstone Park Ent #2

Added: April 21, 2020, 6:24 p.m.

Updated: May 24, 2022, 9:17 a.m.

Location: W Yellowstone (W Entrance Rd), MT

Reporting: True, Located: True

Current AQI: 3.0

W Yellowstone (W Entrance Rd) MT, US: 44.657014, -111.089618

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 24, 2022, 7 a.m. 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.18 ppb (3) N/A N/A 3.0
 
May 24, 2022, 6 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
May 24, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
May 24, 2022, 4 a.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 24, 2022, 3 a.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A N/A 3.0
 
May 24, 2022, 3 a.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 24, 2022, 2 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 24, 2022, 2 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 24, 2022, 1 a.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A N/A 3.0
 
May 24, 2022, 1 a.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 24, 2022, midnight 1.5 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
May 24, 2022, midnight 1.5 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
May 23, 2022, 11 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 23, 2022, 11 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 23, 2022, 8 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A N/A 2.0
 
May 23, 2022, 7 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 23, 2022, 6 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 23, 2022, 3 p.m. 9.2 ppb (9) 4.3 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
May 23, 2022, 2 p.m. 5.3 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 23, 2022, 11 a.m. 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 23, 2022, 10 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 23, 2022, 10 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 23, 2022, 9 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 23, 2022, 3 a.m. 0.7 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 23, 2022, 2 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.2 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 23, 2022, 1 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 23, 2022, midnight 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 22, 2022, 11 p.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 22, 2022, 9 p.m. 2.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 22, 2022, 8 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2022, 7 p.m. 2.2 ppb (3) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2022, 6 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 22, 2022, 5 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2022, 4 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 22, 2022, 3 p.m. 3.1 ppb (3) 1.5 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 22, 2022, 2 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 22, 2022, 1 p.m. 2.2 ppb (3) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A N/A 3.0
 
May 22, 2022, 1 p.m. 2.2 ppb (3) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 22, 2022, noon 1.6 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 22, 2022, 11 a.m. 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 22, 2022, 10 a.m. 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.18 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 22, 2022, 9 a.m. 2.6 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 22, 2022, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2022, 7 a.m. 0.6 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2022, 5 a.m. 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 22, 2022, 3 a.m. 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.15 ppb (2) N/A 2.0 μg/m3 (9) 9.0
 
May 22, 2022, 2 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
May 22, 2022, 1 a.m. 0.5 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 22, 2022, midnight 0.6 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 21, 2022, 11 p.m. 0.9 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 21, 2022, 10 p.m. 1.6 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 21, 2022, 9 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 21, 2022, 8 p.m. 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 21, 2022, 7 p.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 21, 2022, 6 p.m. 2.7 ppb (3) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 21, 2022, 5 p.m. 3.1 ppb (3) 1.6 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 21, 2022, 4 p.m. 2.9 ppb (3) 1.6 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 21, 2022, 3 p.m. 2.9 ppb (3) 1.9 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.21 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 21, 2022, 2 p.m. 4.0 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 21, 2022, 1 p.m. 2.3 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A N/A 3.0
 
May 21, 2022, 1 p.m. 2.3 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 21, 2022, noon 3.2 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 21, 2022, 10 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 21, 2022, 9 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 21, 2022, 8 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
May 21, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 0.0
May 21, 2022, 3 a.m. 1.0 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (2) N/A 2.0 μg/m3 (9) 9.0
 
May 21, 2022, 2 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 21, 2022, 1 a.m. 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.14 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
May 21, 2022, midnight 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 20, 2022, 11 p.m. 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A -2.0 μg/m3 (0) 3.0
 
May 20, 2022, 10 p.m. 0.5 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.19 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 20, 2022, 9 p.m. 0.5 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 20, 2022, 7 p.m. 0.4 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.21 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 20, 2022, 6 p.m. 0.4 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.22 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 20, 2022, 5 p.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.19 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 20, 2022, 4 p.m. 0.2 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 20, 2022, 3 p.m. 0.3 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 20, 2022, 2 p.m. 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 20, 2022, 1 p.m. 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 20, 2022, 11 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 20, 2022, 10 a.m. 0.5 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 20, 2022, 9 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 20, 2022, 8 a.m. 0.5 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 20, 2022, 7 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A -1.0 μg/m3 (0) 3.0
 
May 20, 2022, 6 a.m. 0.1 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 20, 2022, 5 a.m. 0.4 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.17 ppb (3) N/A 0.0 μg/m3 (0) 3.0
 
May 20, 2022, 4 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 20, 2022, 3 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 20, 2022, 2 a.m. 0.3 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.14 ppb (2) N/A 2.0 μg/m3 (9) 9.0
 
May 20, 2022, 1 a.m. 0.5 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A N/A 3.0
 
May 20, 2022, 1 a.m. 0.5 ppb (1) 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 20, 2022, midnight 0.7 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (2) N/A N/A 2.0
 
May 20, 2022, midnight 0.7 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
May 19, 2022, 11 p.m. 1.0 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 19, 2022, 10 p.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2022, 9 p.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 19, 2022, 8 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2022, 7 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2022, 7 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2022, 4 p.m. 1.4 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 19, 2022, 2 p.m. 0.6 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.15 ppb (2) N/A -1.0 μg/m3 (0) 2.0
 
May 19, 2022, 6 a.m. 0.5 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 19, 2022, 5 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2022, 4 a.m. 0.7 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 19, 2022, 3 a.m. 0.6 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 19, 2022, 2 a.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 19, 2022, 1 a.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2022, 11 p.m. 2.6 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 18, 2022, 10 p.m. 1.7 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 18, 2022, 9 p.m. 3.0 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 18, 2022, 8 p.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 18, 2022, 7 p.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2022, 5 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 18, 2022, 4 p.m. 3.8 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) N/A N/A 4.0
 
May 18, 2022, 4 p.m. 3.8 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 18, 2022, 3 p.m. 3.1 ppb (3) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 18, 2022, 3 p.m. 3.1 ppb (3) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 18, 2022, 2 p.m. 6.7 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2022, 2 p.m. 6.7 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2022, 1 p.m. 5.3 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 18, 2022, 1 p.m. 5.3 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 18, 2022, noon 5.7 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 18, 2022, noon 5.7 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 18, 2022, 11 a.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2022, 10 a.m. 0.8 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2022, 2 a.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 18, 2022, 1 a.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 18, 2022, midnight 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 11 p.m. 2.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 17, 2022, 10 p.m. 2.5 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 9 p.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A N/A 3.0
 
May 17, 2022, 9 p.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 17, 2022, 8 p.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 17, 2022, 7 p.m. 2.1 ppb (2) 1.3 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A N/A 3.0
 
May 17, 2022, 7 p.m. 2.1 ppb (2) 1.3 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.2 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 6 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.22 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 6 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.22 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 5 p.m. 2.8 ppb (3) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 5 p.m. 2.8 ppb (3) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 4 p.m. 6.1 ppb (6) 3.5 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 4 p.m. 6.1 ppb (6) 3.5 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 3 p.m. 1.0 ppb (1) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 17, 2022, 3 p.m. 1.0 ppb (1) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
May 17, 2022, 1 p.m. 3.0 ppb (3) 1.6 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 17, 2022, noon 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 17, 2022, noon 2.9 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 17, 2022, 10 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 10 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 9 a.m. 0.2 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 8 a.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (5) 5.0
 
May 17, 2022, 5 a.m. 1.6 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) N/A N/A 3.0
 
May 17, 2022, 4 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.19 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
May 17, 2022, 3 a.m. 0.9 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) N/A N/A 3.0
 
May 17, 2022, 2 a.m. 0.9 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) N/A N/A 3.0
 
May 17, 2022, 1 a.m. 2.1 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 17, 2022, midnight 2.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
May 16, 2022, 11 p.m. 1.1 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
May 16, 2022, 10 p.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 16, 2022, 9 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.09 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
May 16, 2022, 8 p.m. 1.0 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.09 ppb (2) N/A N/A 2.0
 
May 16, 2022, 6 p.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.27 ppb (4) N/A N/A 4.0
 
May 16, 2022, 6 p.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.27 ppb (4) N/A 2.0 μg/m3 (9) 9.0
 
May 16, 2022, 6 p.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.27 ppb (4) N/A 2.0 μg/m3 (9) 9.0
 
May 16, 2022, 6 p.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.27 ppb (4) N/A 2.0 μg/m3 (9) 9.0
 
May 16, 2022, 6 p.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.27 ppb (4) N/A 2.0 μg/m3 (9) 9.0