ID: 5325

AQSQID: 000104804

Site Name: Duncan 4804

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

Updated: May 26, 2022, 8:19 a.m.

Location: Duncan (College St), CC

Reporting: True, Located: True

Current AQI: 24.0

Duncan (College St) CC, CA: 48.786114, -123.717307

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 26, 2022, 6 a.m. N/A 0.1 ppb (1) N/A -1.0 ppb (0) N/A N/A 25.0 ppb (24) N/A N/A 0.0 μg/m3 (0) 24.0
 
May 26, 2022, 5 a.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
May 26, 2022, 4 a.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
May 26, 2022, 3 a.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 0.0 μg/m3 (0) 26.0
 
May 26, 2022, 2 a.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
May 26, 2022, 1 a.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 0.0 μg/m3 (0) 30.0
 
May 26, 2022, midnight N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
May 25, 2022, 11 p.m. N/A 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
May 25, 2022, 10 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
May 25, 2022, 10 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
May 25, 2022, 8 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 1.0 μg/m3 (5) 30.0
 
May 25, 2022, 8 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 1.0 μg/m3 (5) 30.0
 
May 25, 2022, 8 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 1.0 μg/m3 (5) 30.0
 
May 25, 2022, 7 p.m. N/A 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
May 25, 2022, 7 p.m. N/A 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
May 25, 2022, 6 p.m. N/A 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
May 25, 2022, 6 p.m. N/A 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
May 25, 2022, 5 p.m. N/A 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) N/A N/A 1.0 μg/m3 (5) 21.0
 
May 25, 2022, 5 p.m. N/A 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) N/A N/A 1.0 μg/m3 (5) 21.0
 
May 25, 2022, 4 p.m. N/A 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) N/A N/A 0.0 μg/m3 (0) 19.0
 
May 25, 2022, 3 p.m. N/A 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (17) N/A N/A 0.0 μg/m3 (0) 17.0
 
May 25, 2022, 1 p.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (13) N/A N/A N/A 13.0
 
May 25, 2022, 9 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 19.0 ppb (18) N/A N/A 0.0 μg/m3 (0) 18.0
 
May 25, 2022, 5 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 16.0 ppb (15) N/A N/A 1.0 μg/m3 (5) 15.0
 
May 25, 2022, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) N/A N/A 0.0 μg/m3 (0) 17.0
 
May 25, 2022, 1 a.m. N/A 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) N/A N/A 4.0 μg/m3 (17) 24.0
 
May 25, 2022, midnight N/A 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
May 24, 2022, 9 p.m. N/A 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A N/A 2.0 μg/m3 (9) 26.0
 
May 24, 2022, 8 p.m. N/A 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A 2.0 μg/m3 (9) 27.0
 
May 24, 2022, 7 p.m. N/A 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A N/A 0.0 μg/m3 (0) 26.0
 
May 24, 2022, 6 p.m. N/A 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) N/A N/A 2.0 μg/m3 (9) 24.0
 
May 24, 2022, 5 p.m. N/A 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
May 24, 2022, 4 p.m. N/A 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) N/A N/A 2.0 μg/m3 (9) 16.0
 
May 24, 2022, 3 p.m. N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) N/A N/A 0.0 μg/m3 (0) 13.0
 
May 24, 2022, 2 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 15.0 ppb (14) N/A N/A 0.0 μg/m3 (0) 14.0
 
May 24, 2022, 1 p.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 9.0 ppb (9) N/A N/A 0.0 μg/m3 (0) 9.0
 
May 24, 2022, noon N/A -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 16.0 ppb (15) N/A N/A 0.0 μg/m3 (0) 15.0
 
May 24, 2022, 10 a.m. N/A -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 16.0 ppb (15) N/A N/A N/A 15.0
 
May 24, 2022, 9 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 24.0 ppb (23) N/A N/A 0.0 μg/m3 (0) 23.0
 
May 24, 2022, 8 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 27.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
May 24, 2022, 6 a.m. N/A 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 2.0 μg/m3 (9) 26.0
 
May 24, 2022, 5 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 3.0 μg/m3 (13) 26.0
 
May 24, 2022, 5 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 3.0 μg/m3 (13) 26.0
 
May 24, 2022, 4 a.m. N/A 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (20) N/A N/A 2.0 μg/m3 (9) 20.0
 
May 24, 2022, 4 a.m. N/A 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (20) N/A N/A 2.0 μg/m3 (9) 20.0
 
May 24, 2022, 3 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 24, 2022, 3 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 24, 2022, 2 a.m. N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
May 24, 2022, 2 a.m. N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
May 24, 2022, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
May 24, 2022, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
May 24, 2022, midnight N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
May 24, 2022, midnight N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
May 23, 2022, 11 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 23, 2022, 11 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 23, 2022, 8 p.m. N/A 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
May 23, 2022, 7 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
May 23, 2022, 6 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A N/A 3.0 μg/m3 (13) 35.0
 
May 23, 2022, 3 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 0.0 μg/m3 (0) 26.0
 
May 23, 2022, 2 p.m. N/A 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 0.0 μg/m3 (0) 26.0
 
May 23, 2022, 11 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 29.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
May 23, 2022, 10 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 29.0 ppb (27) N/A N/A 1.0 μg/m3 (5) 27.0
 
May 23, 2022, 10 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 29.0 ppb (27) N/A N/A 1.0 μg/m3 (5) 27.0
 
May 23, 2022, 9 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
May 23, 2022, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 0.0 μg/m3 (0) 36.0
 
May 23, 2022, 2 a.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
May 23, 2022, 1 a.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
May 23, 2022, midnight N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 22, 2022, 11 p.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 22, 2022, 9 p.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
May 22, 2022, 8 p.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
May 22, 2022, 7 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
May 22, 2022, 6 p.m. N/A 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 20.0 μg/m3 (68) 68.0
 
May 22, 2022, 5 p.m. N/A 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
May 22, 2022, 4 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A 1.0 μg/m3 (5) 29.0
 
May 22, 2022, 3 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
May 22, 2022, 2 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
May 22, 2022, 1 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 11.0 ppb (11) N/A N/A 2.0 μg/m3 (9) 11.0
 
May 22, 2022, 1 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 11.0 ppb (11) N/A N/A 2.0 μg/m3 (9) 11.0
 
May 22, 2022, noon N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 12.0 ppb (12) N/A N/A 0.0 μg/m3 (0) 12.0
 
May 22, 2022, 11 a.m. N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 12.0 ppb (12) N/A N/A 1.0 μg/m3 (5) 12.0
 
May 22, 2022, 10 a.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 13.0 ppb (13) N/A N/A 0.0 μg/m3 (0) 13.0
 
May 22, 2022, 9 a.m. N/A -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) N/A N/A 0.0 μg/m3 (0) 13.0
 
May 22, 2022, 8 a.m. N/A -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (13) N/A N/A 2.0 μg/m3 (9) 13.0
 
May 22, 2022, 7 a.m. N/A -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 16.0 ppb (15) N/A N/A 8.0 μg/m3 (34) 34.0
 
May 22, 2022, 5 a.m. N/A 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) N/A N/A 8.0 μg/m3 (34) 34.0
 
May 22, 2022, 3 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 0.0 μg/m3 (0) 36.0
 
May 22, 2022, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 0.0 μg/m3 (0) 39.0
 
May 22, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 0.0
May 22, 2022, midnight N/A 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 42.0 ppb (39) N/A N/A 1.0 μg/m3 (5) 39.0
 
May 21, 2022, 11 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 2.0 μg/m3 (9) 41.0
 
May 21, 2022, 10 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 1.0 μg/m3 (5) 40.0
 
May 21, 2022, 9 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A N/A 2.0 μg/m3 (9) 39.0
 
May 21, 2022, 8 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A N/A 7.0 μg/m3 (30) 39.0
 
May 21, 2022, 7 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 9.0 μg/m3 (38) 38.0
 
May 21, 2022, 6 p.m. N/A 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 7.0 μg/m3 (30) 30.0
 
May 21, 2022, 5 p.m. N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
May 21, 2022, 4 p.m. N/A 1.1 ppb (2) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A N/A 2.0 μg/m3 (9) 25.0
 
May 21, 2022, 3 p.m. N/A 1.1 ppb (2) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A N/A 1.0 μg/m3 (5) 19.0
 
May 21, 2022, 2 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 13.0 ppb (13) N/A N/A 2.0 μg/m3 (9) 13.0
 
May 21, 2022, 1 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 10.0 ppb (10) N/A N/A 0.0 μg/m3 (0) 10.0
 
May 21, 2022, 1 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 10.0 ppb (10) N/A N/A 0.0 μg/m3 (0) 10.0
 
May 21, 2022, noon N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 10.0 ppb (10) N/A N/A 0.0 μg/m3 (0) 10.0
 
May 21, 2022, 10 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 9.0 ppb (9) N/A N/A 0.0 μg/m3 (0) 9.0
 
May 21, 2022, 9 a.m. N/A -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 13.0 ppb (13) N/A N/A 0.0 μg/m3 (0) 13.0
 
May 21, 2022, 8 a.m. N/A -0.1 ppb (0) N/A 0.0 ppb (0) N/A N/A 16.0 ppb (15) N/A N/A 0.0 μg/m3 (0) 15.0
 
May 21, 2022, 4 a.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 0.0 μg/m3 (0) 26.0
 
May 21, 2022, 3 a.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 29.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
May 21, 2022, 2 a.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
May 21, 2022, 1 a.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
May 21, 2022, midnight N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 2.0 μg/m3 (9) 36.0
 
May 20, 2022, 11 p.m. N/A 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 8.0 μg/m3 (34) 37.0
 
May 20, 2022, 10 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
May 20, 2022, 9 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
May 20, 2022, 7 p.m. N/A 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 20, 2022, 6 p.m. N/A 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
May 20, 2022, 5 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 29.0 ppb (27) N/A N/A 2.0 μg/m3 (9) 27.0
 
May 20, 2022, 4 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
May 20, 2022, 3 p.m. N/A 1.2 ppb (2) N/A 0.0 ppb (0) N/A N/A 18.0 ppb (17) N/A N/A 2.0 μg/m3 (9) 17.0
 
May 20, 2022, 2 p.m. N/A 1.9 ppb (2) N/A 1.0 ppb (1) N/A N/A 10.0 ppb (10) N/A N/A 0.0 μg/m3 (0) 10.0
 
May 20, 2022, 1 p.m. N/A 3.6 ppb (4) N/A 3.0 ppb (3) N/A N/A 4.0 ppb (4) N/A N/A 1.0 μg/m3 (5) 5.0
 
May 20, 2022, 11 a.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 6.0 ppb (6) N/A N/A 4.0 μg/m3 (17) 17.0
 
May 20, 2022, 10 a.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 8.0 ppb (8) N/A N/A 2.0 μg/m3 (9) 9.0
 
May 20, 2022, 9 a.m. N/A 0.0 ppb (0) N/A -1.0 ppb (0) N/A N/A 18.0 ppb (17) N/A N/A 0.0 μg/m3 (0) 17.0
 
May 20, 2022, 8 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 20.0 ppb (19) N/A N/A 0.0 μg/m3 (0) 19.0
 
May 20, 2022, 7 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 23.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
May 20, 2022, 6 a.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 20.0 ppb (19) N/A N/A 0.0 μg/m3 (0) 19.0
 
May 20, 2022, 5 a.m. N/A 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
May 20, 2022, 4 a.m. N/A 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
May 20, 2022, 3 a.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
May 20, 2022, 2 a.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 2.0 μg/m3 (9) 35.0
 
May 20, 2022, 1 a.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A N/A 3.0 μg/m3 (13) 36.0
 
May 20, 2022, 1 a.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A N/A 3.0 μg/m3 (13) 36.0
 
May 20, 2022, midnight N/A 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
May 20, 2022, midnight N/A 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
May 19, 2022, 11 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A N/A 9.0 μg/m3 (38) 38.0
 
May 19, 2022, 10 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
May 19, 2022, 9 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
May 19, 2022, 8 p.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
May 19, 2022, 7 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
May 19, 2022, 7 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
May 19, 2022, 4 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
May 19, 2022, 2 p.m. N/A 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A N/A 2.0 μg/m3 (9) 25.0
 
May 19, 2022, 6 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
May 19, 2022, 5 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 36.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
May 19, 2022, 4 a.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 40.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 19, 2022, 3 a.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 40.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 19, 2022, 2 a.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
May 19, 2022, 1 a.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A N/A 42.0 ppb (39) N/A N/A 0.0 μg/m3 (0) 39.0
 
May 18, 2022, 11 p.m. N/A 0.4 ppb (1) N/A -1.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
May 18, 2022, 10 p.m. N/A 0.3 ppb (1) N/A -1.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
May 18, 2022, 9 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
May 18, 2022, 8 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 3.0 μg/m3 (13) 40.0
 
May 18, 2022, 7 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
May 18, 2022, 5 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 43.0 ppb (40) N/A N/A 3.0 μg/m3 (13) 40.0
 
May 18, 2022, 4 p.m. N/A 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
May 18, 2022, 4 p.m. N/A 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
May 18, 2022, 3 p.m. N/A 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
May 18, 2022, 3 p.m. N/A 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 0.0 μg/m3 (0) 40.0
 
May 18, 2022, 2 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
May 18, 2022, 2 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
May 18, 2022, 1 p.m. N/A 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
May 18, 2022, 1 p.m. N/A 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
May 18, 2022, noon N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 18, 2022, noon N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 18, 2022, 11 a.m. N/A -0.1 ppb (0) N/A -1.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A 2.0 μg/m3 (9) 31.0
 
May 18, 2022, 10 a.m. N/A -0.1 ppb (0) N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 2.0 μg/m3 (9) 33.0
 
May 18, 2022, 2 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0